OPPENHEIMER SERIES FUND INC
497, 1998-04-17
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OPPENHEIMER LIFESPAN BALANCED FUND

Proxy for Special Shareholders Meeting to be held June 9, 1998

YOUR SHAREHOLDER VOTE IS IMPORTANT!

YOUR PROMPT RESPONSE CAN SAVE YOUR FUND THE EXPENSE OF ANOTHER MAILING.

Please  mark your  proxy on the  reverse  side,  date and sign it, and return it
promptly in the accompanying envelope which requires no postage if mailed in the
United States.

                 Please detach at perforation before mailing.
      -------------------------------------------------------------------
OPPENHEIMER LIFESPAN BALANCED FUND

Proxy For Special Shareholders Meeting to be held June 9, 1998

THE UNDERSIGNED  SHAREHOLDER OF OPPENHEIMER LIFESPAN BALANCED FUND (the "Fund"),
does hereby  appoint  Robert J. Bishop,  George C. Bowen,  Andrew J. Donohue and
Scott T.  Farrar,  and each of them,  as  attorneys-in-fact  and  proxies of the
undersigned,  with full power of substitution,  to attend the Special Meeting of
the  Shareholders  of the Fund to be held on June 9, 1998,  at 6803 SOUTH TUCSON
WAY,  ENGLEWOOD,  COLORADO  80112  at  10:00  A.M.,  Denver  time,  and  at  all
adjournments thereof, and to vote the shares held in the name of the undersigned
on the record date for said  meeting on the  Proposal  specified  on the reverse
side. Said  attorneys-in-fact  shall vote in accordance with their best judgment
as to any other matter.

PROXY  SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS  who  recommends a vote FOR
the Proposal on the reverse side. THE SHARES REPRESENTED HEREBY WILL BE VOTED AS
INDICATED ON THE REVERSE SIDE OR FOR IF NO CHOICE IS INDICATED.


                                                                        (Over)
                                                                           315


<PAGE>


OPPENHEIMER LIFESPAN BALANCED FUND

Proxy for Special Shareholders Meeting to be held June 9, 1998

YOUR SHAREHOLDER VOTE IS IMPORTANT!

YOUR PROMPT  RESPONSE CAN SAVE YOUR FUND MONEY.  Please vote, sign and mail your
proxy ballot (this card) in the enclosed  postage-paid envelope today, no matter
how many shares you own. A majority of the Fund's shares must be  represented in
person or by proxy. Please vote your proxy so your Fund can avoid the expense of
another mailing.

                 Please detach at perforation before mailing.
       -----------------------------------------------------------------
1. THE PROPOSAL: To approve an Agreement and Plan of Reorganization  between the
Fund and Oppenheimer Disciplined Allocation Fund("Disciplined Allocation Fund"),
and  the  transactions  contemplated  thereby,  including  (a) the  transfer  of
substantially  all the assets of the Fund in exchange for shares of  Disciplined
Allocation  Fund, (b) the distribution of such shares to the shareholders of the
Fund in  complete  liquidation  of the  Fund,  and (c) the  cancellation  of the
outstanding shares of the Fund.

1.    o FOR                   o AGAINST                      o ABSTAIN

NOTE:  PLEASE SIGN EXACTLY AS YOUR NAME(S) APPEAR ON THIS PROXY. When signing as
custodian,  attorney, executor,  administrator,  trustee, etc., please give your
full title as such.  All joint owners should sign this proxy.  If the account is
registered in the name of a  corporation,  partnership  or other entity,  a duly
authorized individual must sign on its behalf and give his or her title.

                       DATED: ___________________________, 1998
                                  (Month) (Day)

                              _______________________________________
                              SIGNATURE(S)

                              _______________________________________
                              SIGNATURE(S)

                              Please read both sides of this ballot

                                                                        (Over)
                                                                           315


<PAGE>



BRIDGET A. MACASKILL

President and Chief Executive Officer




                                                                 April 8, 1998


Dear Oppenheimer LifeSpan Balanced Fund Shareholder,

      One of the things we pride ourselves on at  OppenheimerFunds,  Inc. is our
commitment to searching for new investment opportunities for our shareholders. I
am  writing to you today to let you know  about one of these  opportunities  - a
positive change that has been proposed for Oppenheimer LifeSpan Balanced Fund.

      After careful  consideration,  the Board of Directors agreed that it would
be in the best interest of shareholders of Oppenheimer LifeSpan Balanced Fund to
reorganize into another  Oppenheimer fund,  Oppenheimer  Disciplined  Allocation
Fund. A shareholder meeting has been scheduled for June 9th, and all Oppenheimer
LifeSpan  Balanced Fund  shareholders of record on March 17th are being asked to
vote  either in person or by  proxy.  You will find a notice of the  meeting,  a
ballot  card,  a  proxy  statement   detailing  the  proposal,   an  Oppenheimer
Disciplined  Allocation  Fund  prospectus  and a  postage-paid  return  envelope
enclosed for your use.

WHY DOES THE BOARD OF DIRECTORS RECOMMEND THIS CHANGE?

      Oppenheimer LifeSpan Balanced Fund and Oppenheimer  Disciplined Allocation
Fund have compatible  objectives,  as discussed in the enclosed proxy statement.
We believe that Oppenheimer  Disciplined  Allocation Fund's flexible  management
approach  allows that fund to respond more  effectively  to changing  market and
economic   conditions,   and  can  offer  shareholders  even  better  investment
opportunities over the long term.

      Another benefit for shareholders is the greater economy of scale resulting
from  consolidation  into  a much  larger  fund.  By  merging  into  Oppenheimer
Disciplined Allocation Fund - which now has over $250 million in assets - former
shareholders  of  Oppenheimer  LifeSpan  Balanced  Fund may benefit from a lower
expense ratio as costs are spread among a larger number of shares.

HOW DO YOU VOTE?

      No matter how large or small your investment,  your vote is important,  so
please review the proxy  statement  carefully.  To cast your vote,  simply mark,
sign and date the  enclosed  proxy  ballot  and  return  it in the  postage-paid
envelope today.  Remember, it can be expensive for the Fund - and ultimately you
as a shareholder - to remail the ballots if not enough responses are received to
conduct the meeting.

                                                                (over, please)


<PAGE>



      If you have any questions about the proposal,  please feel free to contact
your financial advisor, or call us at 1-800-525-7048.

      As always,  we appreciate  your  confidence in  OppenheimerFunds  and look
forward to serving you for many years to come.

                                                      Sincerely,



                                                      /s/ Bridget A. Macaskill

Enclosures




<PAGE>



                      OPPENHEIMER LIFESPAN BALANCED FUND
            TWO WORLD TRADE CENTER, NEW YORK, NEW YORK  10048-0203
                                1-800-525-7048

                   NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                          TO BE HELD ON JUNE 9, 1998

TO THE SHAREHOLDERS OF OPPENHEIMER LIFESPAN BALANCED FUND:

Notice is hereby given that a Special Meeting of the Shareholders of Oppenheimer
LifeSpan  Balanced Fund  ("LifeSpan  Balanced  Fund"),  a series of  Oppenheimer
Series Fund, Inc., a registered  management  investment company, will be held at
6803 SOUTH TUCSON WAY, ENGLEWOOD,  COLORADO 80112 at 10:00 A.M., Denver time, on
June 9, 1998, or any  adjournments  thereof (the  "Meeting"),  for the following
purposes:

1. To approve or  disapprove  an Agreement  and Plan of  Reorganization  between
LifeSpan Balanced Fund and Oppenheimer Disciplined Allocation Fund ("Disciplined
Allocation Fund") and the transactions  contemplated thereby,  including (a) the
transfer  of  substantially   all  the  assets  of  LifeSpan  Balanced  Fund  to
Disciplined  Allocation Fund in exchange for Class A, Class B and Class C shares
of  Disciplined  Allocation  Fund,  (b) the  distribution  of such shares to the
corresponding  Class A, Class B and Class C  shareholders  of LifeSpan  Balanced
Fund in complete  liquidation of LifeSpan Balanced Fund, and (c)the cancellation
of the  outstanding  shares of  LifeSpan  Balanced  Fund(the  "Proposal"  or the
"Reorganization").

2. To act upon such other matters as may properly come before the Meeting.

Shareholders  of record at the close of business on March 17, 1998 are  entitled
to notice of, and to vote at, the Meeting.  The Proposal is more fully discussed
in the Proxy Statement and Prospectus.  Please read it carefully  before telling
us,  through  your  proxy or in  person,  how you wish your  shares to be voted.
LifeSpan  Balanced  Fund's Board of Directors  recommends a vote in favor of the
Proposal. WE URGE YOU TO SIGN, DATE AND MAIL THE ENCLOSED PROXY PROMPTLY.

By Order of the Board of Directors,

Andrew J. Donohue, Secretary

April 6, 1998
- -----------------------------------------------------------------
SHAREHOLDERS  WHO DO NOT EXPECT TO ATTEND THE MEETING ARE  REQUESTED TO INDICATE
VOTING INSTRUCTIONS ON THE ENCLOSED PROXY AND TO DATE, SIGN AND RETURN IT IN THE
ACCOMPANYING  POSTAGE-PAID ENVELOPE. TO AVOID UNNECESSARY DUPLICATE MAILINGS, WE
ASK YOUR COOPERATION IN PROMPTLY MAILING YOUR PROXY NO MATTER HOW LARGE OR SMALL
YOUR HOLDINGS MAY BE.

315


<PAGE>



                      OPPENHEIMER LIFESPAN BALANCED FUND
            TWO WORLD TRADE CENTER, NEW YORK, NEW YORK 10048-0203
                                1-800-525-7048

                               PROXY STATEMENT

                   OPPENHEIMER DISCIPLINED ALLOCATION FUND
            TWO WORLD TRADE CENTER, NEW YORK, NEW YORK 10048-0203
                                1-800-525-7048

                                  PROSPECTUS

This Proxy Statement of Oppenheimer  LifeSpan Balanced Fund ("LifeSpan  Balanced
Fund") relates to the Agreement and Plan of Reorganization (the  "Reorganization
Agreement")and  the  transactions  contemplated  thereby (the  "Reorganization")
between  Oppenheimer Series Fund, Inc. ("OSF" or the "Company")on  behalf of its
series,  LifeSpan  Balanced  Fund,  and OSF on behalf of its series  Oppenheimer
Disciplined   Allocation  Fund  ("Disciplined   Allocation  Fund").  This  Proxy
Statement also constitutes a Prospectus of Disciplined  Allocation Fund included
in a  Registration  Statement  on  Form  N-14  filed  by the  Company  with  the
Securities and Exchange  Commission  (the "SEC").  Such  Registration  Statement
relates  to the  registration  of shares of  Disciplined  Allocation  Fund to be
offered  to  the  shareholders  of  LifeSpan   Balanced  Fund  pursuant  to  the
Reorganization Agreement. The Company,  Disciplined Allocation Fund and LifeSpan
Balanced  Fund are  located  at Two  World  Trade  Center,  New  York,  New York
10048-0203 (telephone 1-800-525-7048).

This Proxy Statement and Prospectus  sets forth  information  about  Disciplined
Allocation Fund and the  Reorganization  that  shareholders of LifeSpan Balanced
Fund should know before voting on the  Reorganization.  A copy of the Prospectus
for  Disciplined  Allocation  Fund,  dated  February 19, 1998 is  enclosed,  and
incorporated  herein by reference.  The following documents have been filed with
the  SEC  and  are   available   without   charge   upon   written   request  to
OppenheimerFunds  Services,  the transfer and  shareholder  servicing  agent for
Disciplined  Allocation  Fund and  LifeSpan  Balanced  Fund,  at P.O.  Box 5270,
Denver,  Colorado 80217, or by calling the toll-free  number shown above:  (i) a
Prospectus for LifeSpan  Balanced Fund, dated February 19, 1998, as supplemented
February  24,  1998,(ii) a Statement  of  Additional  Information  for  LifeSpan
Balanced  Fund,  dated  February 19, 1998,  and (iii) a Statement of  Additional
Information  for  Disciplined  Allocation  Fund,  dated  February  19,  1998.  A
Statement of Additional Information relating to the Reorganization,  dated April
6, 1998 (the "Series Fund Additional Statement") which is incorporated herein by
reference  and  which  contains  more  detailed  information  about  Disciplined
Allocation Fund and its  management,  has been filed with the SEC as part of the
Company's  Registration  Statement  on Form  N-14 and is  available  by  written
request to OppenheimerFunds  Services at the same post office box address listed
above or by calling the toll-free number shown above.

Investors are advised to read and retain this Proxy Statement and Prospectus for
future reference.

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE COMMISSION NOR HAS THE COMMISSION PASSED ON THE ACCURACY OR ADEQUACY OF
THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


This Proxy Statement and Prospectus is dated April 6, 1998




<PAGE>



                               TABLE OF CONTENTS
                        PROXY STATEMENT AND PROSPECTUS
                                                                        PAGE
INTRODUCTION.............................................................
   General..............................................................1
   Record Date; Vote Required; Share Information........................2
   Proxies..............................................................3
   Costs of the Solicitation and the Reorganization.....................4
COMPARATIVE FEE TABLES..................................................5
SYNOPSIS................................................................8
   Parties to the Reorganization........................................8
   Shares to be Issued..................................................8
   The Reorganization      .............................................9
   Reasons for the Reorganization.......................................9
   Tax Consequences of the Reorganization..............................10
   Investment Objectives and Policies..................................10
   Investment Advisory and Distribution and Service Plan Fees............
   Purchases, Exchanges and Redemptions................................12
PRINCIPAL RISK FACTORS.................................................12
APPROVAL OF THE REORGANIZATION (THE PROPOSAL)..........................16
   Reasons for the Reorganization......................................16
   The Reorganization..................................................17
   Tax Aspects of the Reorganization...................................18
   Capitalization Table (Unaudited)....................................20
COMPARISON BETWEEN LIFESPAN BALANCED FUND AND DISCIPLINED
ALLOCATION FUND
   Investment Objectives and Policies..................................21
   Permitted Investments...............................................23
   Investment Restrictions.............................................32
   Description of Brokerage Practices..................................35
   Expense Ratios and Performance......................................36
   Shareholder Services................................................36
   Rights of Shareholders..............................................37
   Organization and History............................................38
   Management and Distribution Arrangements............................39
   Purchase of Additional Shares.......................................41
   Dividends and Distributions.........................................42
METHOD OF CARRYING OUT THE REORGANIZATION .............................42
ADDITIONAL INFORMATION.................................................44
   Financial Information...............................................44
   Public Information..................................................45
OTHER BUSINESS.........................................................46
EXHIBIT A - Agreement and Plan of Reorganization by and between
LifeSpan Balanced Fund and Disciplined Allocation Fund................A-1
EXHIBIT B - Average Annual Total Returns for the Period
Ended  12/31/97.......................................................B-1


<PAGE>



                      OPPENHEIMER LIFESPAN BALANCED FUND
             TWO WORLD TRADE CENTER, NEW YORK, NEW YORK 10048-0203
                                1-800-525-7048

                        PROXY STATEMENT AND PROSPECTUS


                        SPECIAL MEETING OF SHAREHOLDERS
                            TO BE HELD JUNE 9, 1998

                                 INTRODUCTION

GENERAL

This Proxy  Statement and Prospectus is being  furnished to the  shareholders of
Oppenheimer  LifeSpan  Balanced Fund  ("LifeSpan  Balanced  Fund"),  a series of
Oppenheimer  Series  Fund,  Inc.  (the  "Company"),   a  registered   management
investment  company,  in connection with the solicitation by the Company's Board
of  Directors  (the  "Board")  of proxies to be used at the  Special  Meeting of
Shareholders  of  LifeSpan  Balanced  Fund to be held at 6803 SOUTH  TUCSON WAY,
ENGLEWOOD,  COLORADO 80112, at 10:00 A.M.,  Denver time, on June 9, 1998, or any
adjournments  thereof (the  "Meeting").  It is expected that the mailing of this
Proxy Statement and Prospectus will commence on or about April 14, 1998.

At the Meeting,  shareholders of LifeSpan Balanced Fund will be asked to approve
an Agreement and Plan of Reorganization (the "Reorganization Agreement") between
the  Company on behalf of  LifeSpan  Balanced  Fund and the Company on behalf of
Oppenheimer Disciplined Allocation Fund ("Disciplined Allocation Fund"), and the
transactions  contemplated  thereby  including (a) the transfer of substantially
all the assets of  LifeSpan  Balanced  Fund to  Disciplined  Allocation  Fund in
exchange for Class A, Class B and Class C shares of Disciplined Allocation Fund,
(b) the  distribution of such shares to the  corresponding  Class A, Class B and
Class C  shareholders  of  LifeSpan  Balanced  Fund in complete  liquidation  of
LifeSpan  Balanced Fund, and (c) the  cancellation of the outstanding  shares of
LifeSpan Balanced Fund(the "Proposal" or the "Reorganization").

Disciplined  Allocation Fund currently offers Class A shares with a sales charge
imposed at the time of purchase.  There is no initial  sales charge on purchases
of Class B or Class C shares; however, a contingent deferred sales charge may be
imposed, depending on when the shares are sold. The Class A, Class B and Class C
shares issued pursuant to the  Reorganization  will be issued at net asset value
without a sales charge and no contingent  deferred  sales charge will be imposed
on any LifeSpan Balanced Fund shares exchanged in the  Reorganization.  However,
any  contingent  deferred  sales charge which applies to LifeSpan  Balanced Fund
shares will continue to apply to Disciplined Allocation Fund shares received in

                                     -1-

<PAGE>



the  reorganization.  Additional  information  with respect to these  charges by
Disciplined   Allocation  Fund  is  set  forth  herein,  in  the  Prospectus  of
Disciplined Allocation Fund accompanying this Proxy Statement and Prospectus and
in the Disciplined Allocation Fund Statement of Additional Information,  both of
which are incorporated
herein by reference.

RECORD DATE; VOTE REQUIRED; SHARE INFORMATION

The Board of the  Company  has fixed the close of  business on March 17, 1998 as
the record  date (the  "Record  Date")  for the  determination  of  shareholders
entitled to notice of, and to vote at, the Meeting.  An affirmative  vote of the
holders of a "majority of the outstanding  voting  securities" as defined in the
Investment Company Act of 1940, as amended (the "Investment Company Act") of all
of the Class A, Class B and Class C shares in the aggregate of LifeSpan Balanced
Fund is required to approve the Reorganization. That level of vote is defined in
the Investment  Company Act as the vote of the holders of the lesser of: (i) 67%
or  more of the  voting  securities  present  or  represented  by  proxy  at the
shareholders  meeting, if the holders of more than 50% of the outstanding voting
securities  are present or  represented  by proxy,  or (ii) more than 50% of the
outstanding voting securities. Each shareholder will be entitled to one vote for
each share and a fractional vote for each fractional share held of record at the
close of business on the Record Date.  Only  shareholders  of LifeSpan  Balanced
Fund will vote on the  Reorganization.  The vote of  shareholders of Disciplined
Allocation Fund is not being solicited.

At the close of business on the Record Date, there were 5,712,574.689  shares of
LifeSpan Balanced Fund issued and outstanding, consisting of 5,206,572.236 Class
A shares, 415,107.952 Class B shares and 90,894.501 Class C shares. At the close
of business on the Record Date, there were 16,690,416.258  shares of Disciplined
Allocation Fund issued and  outstanding,  consisting of  15,871,847.214  Class A
shares,  693,915.921 Class B shares and 124,653.123 Class C shares. The presence
in person or by proxy of the  holders of a majority of the shares of all classes
constitutes  a quorum for the  transaction  of business at the  Meeting.  To the
knowledge of LifeSpan  Balanced  Fund, as of the Record Date, no person owned of
record or  beneficially  owned 5% or more of its  outstanding  shares except the
following:  Massachusetts  Mutual Life  Insurance  Company,  1295 State  Street,
Springfield,  Massachusetts 01111-0001 which owned of record 3,994,015.346 Class
A shares (76.71% of the outstanding  Class A shares);  William R. Trimmer MD LTD
Profit Sharing Plan, 890 Mill Street,  Reno,  Nevada 89502 which owned of record
42,532.925 Class B shares (10.24% of the outstanding  Class B shares);  Margaret
B. Woodworth Trust, 2404 Loring Street, San Diego,  California  92109-2347 which
owned of record  24,512.862  Class B shares  (5.90% of the  outstanding  Class B
shares); Bank Boston Trustee Rollover IRA for the benefit of

                                     -2-

<PAGE>



Clayton C. Clammer,  5928 Los Alamos Street, Buena Park,  California  90620-2706
which owned of record 11,203.186 Class C shares (12.32% of the outstanding Class
C shares); Bank Boston Trustee Rollover IRA for the benefit of Joanne Dickinson,
1071 Wade Lane, Oakmont, Pennsylvania 15139-1266 which owned of record 9,719.013
Class C shares (10.69% of the outstanding Class C shares);  Merrill Lynch Pierce
Fenner  &  Smith  Inc.,  4800  Deer  Lake  Drive  East,  Jacksonville,   Florida
32246-6484,  which  owned of record for the benefit of its  customers  6,962.082
Class C shares (7.65% of the outstanding Class C shares). As of the Record Date,
to the knowledge of  Disciplined  Allocation  Fund, no person owned of record or
beneficially  owned 5% or more of its outstanding  shares except for Bank Boston
Trustee  Rollover IRA for the benefit of Barry  Deutsch,  1919 19th Street,  San
Francisco,  California 94107-2716 which owned of record 8,480.552 Class C shares
(6.80% of the  outstanding  Class C shares of Disciplined  Allocation  Fund). In
addition, as of the Record Date, the Directors and officers of LifeSpan Balanced
Fund and  Disciplined  Allocation  Fund  owned  less than 1% of the  outstanding
shares  of  either  LifeSpan  Balanced  Fund  or  Disciplined  Allocation  Fund,
respectively.

Massachusetts  Mutual Life Insurance  Company,  the majority  shareholder of the
Fund, intends to vote its shares in favor of the Reorganization.

PROXIES

The enclosed form of proxy, if properly executed and returned, will be voted (or
counted as an abstention or withheld from voting) in accordance with the choices
specified thereon,  and will be included in determining  whether there is quorum
to conduct the Meeting.  The proxy will be voted in favor of the Proposal unless
a choice is indicated to vote against or to abstain from voting on the Proposal.

Shares  owned of record by  broker-dealers  for the  benefit of their  customers
("street  account  shares")  will  be  voted  by  the  broker-dealer   based  on
instructions received from its customers.  If no instructions are received,  the
broker-dealer  may (if permitted  under  applicable  stock exchange  rules),  as
record holder,  vote such shares on the Proposal in the same  proportion as that
broker-dealer  votes street  account shares for which voting  instructions  were
received in time to be voted.  Broker  "non-votes"  exist where a proxy received
from a broker indicates that the broker does not have discretionary authority to
vote  the  shares  on the  matter.  Shares  represented  in  person  or by proxy
(including shares which abstain or do not vote on the Proposal, including broker
"non- votes") will be counted for purposes of  determining  the number of shares
that are  present  and are  entitled  to vote on the  Proposal,  but will not be
counted as a vote in favor of such  Proposal.  Accordingly,  an abstention  from
voting on the Proposal or a broker

                                     -3-

<PAGE>



"non-vote" will have the same legal effect as a vote against the Proposal.  If a
shareholder  executes  and returns a proxy but fails to  indicate  how the votes
should be cast, the proxy will be voted in favor of the Proposal.  The proxy may
be  revoked  at any time prior to the  voting  thereof  by:  (i)  writing to the
Secretary of LifeSpan  Balanced  Fund at Two World Trade Center,  New York,  New
York  10048-0203  (if received in time to be acted  upon);  (ii)  attending  the
Meeting and voting in person;  or (iii)  signing  and  returning a new proxy (if
returned and received in time to be voted).

If at the time any  session  of the  Meeting  is called to order a quorum is not
present,  in person or by proxy,  the  persons  named as proxies  may vote those
proxies  which have been received to adjourn the Meeting to a later date. In the
event that a quorum is present  but  sufficient  votes in favor of the  Proposal
have not been  received,  the  persons  named as proxies may propose one or more
adjournments of the Meeting to permit further  solicitation of proxies. All such
adjournments  will  require  the  affirmative  vote of a majority  of the shares
present in person or by proxy at the session of the Meeting to be adjourned. The
persons named as proxies will vote those proxies which they are entitled to vote
in favor of the Proposal,  in favor of such an adjournment,  and will vote those
proxies required to be voted against the Proposal, against any such adjournment.
A vote may be taken on the  Proposal in this proxy  statement  prior to any such
adjournment  if  sufficient  votes for its approval have been received and it is
otherwise  appropriate.  Any adjourned session or sessions may be held within 90
days  after the date set for the  original  Meeting  without  the  necessity  of
further notice.

COSTS OF THE SOLICITATION AND THE REORGANIZATION

All expenses of this  solicitation,  including  the cost of printing and mailing
this Proxy  Statement and Prospectus,  will be borne by LifeSpan  Balanced Fund.
Any documents such as existing  prospectuses or annual reports that are included
in that mailing will be a cost of the Fund issuing the document.  In addition to
the  solicitation  of proxies by mail,  proxies may be  solicited by officers of
LifeSpan Balanced Fund or officers and employees of  OppenheimerFunds  Services,
personally or by telephone or telegraph;  any expenses so incurred will be borne
by  OppenheimerFunds  Services.  Proxies  may  also  be  solicited  by  a  proxy
solicitation  firm hired at LifeSpan  Balanced  Fund's expense for such purpose.
Brokerage  houses,  banks and other  fiduciaries  may be  requested  to  forward
soliciting material to the beneficial owners of shares of LifeSpan Balanced Fund
and to obtain authorization for the execution of proxies. For those services, if
any,  they will be reimbursed  by LifeSpan  Balanced  Fund for their  reasonable
out-of-pocket expenses.


                                     -4-

<PAGE>



With  respect to the  Reorganization,  LifeSpan  Balanced  Fund and  Disciplined
Allocation Fund will bear the cost of their  respective tax opinions.  Any other
out-of-pocket expenses of LifeSpan Balanced Fund and Disciplined Allocation Fund
associated with the  Reorganization,  including  legal,  accounting and transfer
agent  expenses,  will be  borne  by  LifeSpan  Balanced  Fund  and  Disciplined
Allocation Fund, respectively, in the amounts so incurred by each.

                            COMPARATIVE FEE TABLES

SHAREHOLDER  TRANSACTION  EXPENSES.   LifeSpan  Balanced  Fund  and  Disciplined
Allocation  Fund each pay a variety of expenses for  management of their assets,
administration,  distribution  of their  shares  and other  services,  and those
expenses are  reflected  in each Fund's net asset value per share.  Shareholders
pay other  expenses  directly,  such as sales  charges.  The following  table is
provided to help you compare the direct  expenses of  investing in each class of
either  LifeSpan  Balanced  Fund,  Disciplined  Allocation  Fund or  Disciplined
Allocation  Fund as surviving  Fund after giving  effect to the  Reorganization.
LIFESPAN BALANCED FUND/DISCIPLINED  ALLOCATION  FUND/DISCIPLINED ALLOCATION FUND
AS THE SURVIVING FUND

                              CLASS A           CLASS B           CLASS C
                              SHARES            SHARES            SHARES
- -----------------------------------------------------------------------------
Maximum Sales Charge          5.75%             None              None
on Purchases
(as a % of offering price)
- -----------------------------------------------------------------------------
Maximum Deferred
Sales Charge (as       None(1)                  5% in the         1% if
a % of the original                             first year        shares
offering price of the                           declining         are
lower offering price or                         to 1% in          redeemed
redemption proceeds)                            the sixth         within 12
                                                year and          months of
                                                eliminated        purchase(2)
                                                thereafter(2)
- ------------------------------------------------------------------------------
Maximum
Sales Charge on               None              None              None
Reinvested Dividends
- ------------------------------------------------------------------------------
Exchange Fee                  None              None              None
- ------------------------------------------------------------------------------
Redemption Fee                None(3)           None(3)           None(3)

(1) If you  invest  more than $1  million  ($500,000  or more for  purchases  by
"Retirement  Plans," as defined in "Class A Contingent Deferred Sales Charge" in
each Fund's Prospectus) in Class A shares, you may have to pay a sales charge of
up to 1% if you sell your shares within 12 calendar months (18 months for shares

                                     -5-

<PAGE>



purchased  prior to May 1,  1997)from the end of the calendar month during which
you purchased those shares.  
(2) See "How to Buy  Shares - Buying  Class B Shares"  and "How to Buy  Shares -
Buying Class C Shares: in each Fund's Prospectus.
(3) There is a $10 transaction fee for redemption proceeds paid by Federal Funds
wire,  but not for  redemptions  paid by  check  or ACH  wire  transfer  through
AccountLink.

ANNUAL FUND OPERATING EXPENSES.  The following tables are the operating expenses
of Class  A,  Class B and  Class C  shares  of  LifeSpan  Balanced  Fund and the
operating  expenses  of  Class A,  Class B and  Class C  shares  of  Disciplined
Allocation  Fund. These tables are based on expenses for the twelve month period
ended October 31, 1997. The pro forma information is an estimate of the business
expenses of the surviving Disciplined Allocation Fund after giving effect to the
Reorganization.  All amounts  shown are a percentage of net assets of each class
of each of the Funds.
<TABLE>
<CAPTION>


                        LIFE SPAN BALANCED FUND          DISCIPLINED ALLOCATION FUND

                        CLASS A     CLASS B     CLASS C  CLASS A     CLASS B     CLASS C
<S>                     <C>         <C>         <C>      <C>         <C>         <C>
Management Fees         0.85%       0.85%       0.85%    0.62%       0.62%       0.62%
12b-1 Plan Fees         0.25%       1.00%       1.00%    0.25%       1.00%       1.00%
Other Expenses          0.32%       0.33%       0.31%    0.24%       0.27%       0.30%
Total Fund
 Operating Expenses     1.42%       2.18%       2.16%    1.11%       1.89%       1.92%
</TABLE>

                        PRO FORMA SURVIVING DISCIPLINED ALLOCATION FUND

                        CLASS A     CLASS B     CLASS C

Management Fees         0.62%       0.62%       0.62%
12b-1 Plan Fees         0.25%       1.00%       1.00%
Other Expenses          0.24%       0.27%       0.28%
Total Fund
 Operating Expenses     1.11%       1.89%       1.90%

The 12b-1  fees for Class A shares of  LifeSpan  Balanced  Fund and  Disciplined
Allocation  Fund are service  plan fees.  The service plan fees are a maximum of
0.25% of average  annual  net  assets of Class A shares of each Fund.  The 12b-1
fees for Class B and Class C shares  of each of the Funds are  Distribution  and
Service Plan fees which include a service fee of 0.25% and an asset-based  sales
charge of 0.75%.

EXAMPLES. To try and show the effect of the expenses on an investment over time,
the hypothetical examples shown below have

                                     -6-

<PAGE>



been created.  Assume that you make a $1,000  investment in Class A, Class B and
Class C shares of LifeSpan Balanced Fund, or Class A, Class B and Class C shares
of  Disciplined  Allocation  Fund, or Class A, Class B and Class C shares of the
pro forma surviving Disciplined Allocation Fund and that the annual return is 5%
and that the  operating  expenses  for each Fund are the ones shown in the chart
above.  If you were to redeem your shares at the end of each period shown below,
your  investment  would incur the  following  expenses by the end of each period
shown.

                                 1 YEAR      3 YEARS     5 YEARS     10 YEARS*
LifeSpan Balanced Fund
     Class A Shares              $71         $100        $131        $218
     Class B Shares              $72         $ 98        $137        $214
     Class C Shares              $32         $ 68        $116        $249

Disciplined Allocation Fund
     Class A Shares              $68         $91         $115        $185
     Class B Shares              $69         $89         $122        $182
     Class C Shares              $30         $60         $104        $224

Pro Forma Surviving
Disciplined Allocation Fund
     Class A Shares              $68         $91         $115        $185
     Class B Shares              $69         $89         $122        $182
     Class C Shares              $29         $60         $103        $222

If you did not redeem your investment, it would incur the following expenses:

                                 1 YEAR      3 YEARS     5 YEARS     10 YEARS*
LifeSpan Balanced Fund
     Class A Shares              $71         $100        $131        $218
     Class B Shares              $22         $ 68        $117        $214
     Class C Shares              $22         $ 68        $116        $249

Disciplined Allocation Fund
     Class A Shares              $68         $ 91        $115        $185
     Class B Shares              $19         $ 59        $102        $182
     Class C Shares              $20         $ 60        $104        $224

Pro Forma Surviving
Disciplined Allocation Fund
     Class A Shares              $68         $ 91        $115        $185
     Class B Shares              $19         $ 59        $102        $182
     Class C Shares              $19         $ 60        $103        $222

* In the first  example,  expenses  include the Class A initial sales charge and
the  applicable  Class B or Class C contingent  deferred  sales  charge.  In the
second example,  Class A expenses include the initial sales charge,  but Class B
and Class C expenses do not include contingent deferred sales charges. The Class
B expenses in years 7 through 10 are based on the Class A expenses  shown above,
because each of the Funds automatically converts your Class B

                                     -7-

<PAGE>



shares into Class A shares after 6 years.  Long term Class B and C  shareholders
could pay the  economic  equivalent  of more than the  maximum  front-end  sales
charge  allowed  under  applicable  regulations,  because  of the  effect of the
asset-based  sales charge and contingent  deferred  sales charge.  The automatic
conversion  of Class B shares  to Class A shares is  designed  to  minimize  the
likelihood that this will occur.

The examples show the effect of expenses on an investment,  but are not meant to
state or predict  actual or expected  costs or investment  returns of the Funds,
all of which may be more or less than the amounts shown.

                                   SYNOPSIS

The following is a synopsis of certain information  contained in or incorporated
by  reference  in  this  Proxy   Statement  and   Prospectus  and  presents  key
considerations  for  shareholders  of LifeSpan  Balanced  Fund to assist them in
determining  whether to approve  the  Reorganization.  This  synopsis  is only a
summary  and is  qualified  in its  entirety  by the more  detailed  information
contained in or incorporated by reference in this Proxy Statement and Prospectus
and by the  Reorganization  Agreement,  a copy of which is attached as Exhibit A
hereto. Shareholders should carefully review this Proxy Statement and Prospectus
and the  Reorganization  Agreement in their  entirety  and, in  particular,  the
current  Prospectus of Disciplined  Allocation Fund which accompanies this Proxy
Statement and Prospectus and is incorporated herein by reference.

PARTIES TO THE REORGANIZATION

Oppenheimer  Series Fund,  Inc.  (defined above as the Company) was organized in
1981 as a multi-series  Maryland  corporation  which  currently has five series.
Both LifeSpan  Balanced Fund and  Disciplined  Allocation  Fund are  diversified
series of the Company.  The Company is governed by Articles of Incorporation and
By-laws and is managed under the direction of a Board of Directors.  The Company
is governed by applicable  Maryland law and applicable  federal law. The Company
is  an  open-end,  diversified  management  investment  company.  Both  LifeSpan
Balanced  Fund and  Disciplined  Allocation  Fund are located at Two World Trade
Center, New York, New York 10048-0203.  The Company, including the two Funds, is
governed   by  a  Board  of   Directors   (   defined   above  as  the   Board).
OppenheimerFunds,  Inc. (the "Manager") whose address is Two World Trade Center,
New York, New York 10048-0203,  acts as investment  adviser to LifeSpan Balanced
Fund and  Disciplined  Allocation Fund  (collectively  referred to herein as the
"Funds"). Additional information about the parties is set forth below.

SHARES TO BE ISSUED


                                     -8-

<PAGE>



All  shareholders of LifeSpan  Balanced Fund who own Class A shares will receive
Class A shares of  Disciplined  Allocation  Fund in  exchange  for their Class A
shares of LifeSpan Balanced Fund. Shareholders of LifeSpan Balanced Fund who own
Class B shares will receive  Class B shares of  Disciplined  Allocation  Fund in
exchange for their Class B shares of LifeSpan  Balanced  Fund.  Shareholders  of
LifeSpan  Balanced  Fund who own Class C shares will  receive  Class C shares of
Disciplined  Allocation  Fund in  exchange  for their Class C shares of LifeSpan
Balanced  Fund. The voting rights of shares of each Fund are  substantially  the
same. See "Rights of Shareholders" below for more information.

THE REORGANIZATION

The Reorganization  Agreement provides for the transfer of substantially all the
assets of LifeSpan Balanced Fund to Disciplined  Allocation Fund in exchange for
Class A,  Class B and Class C shares of  Disciplined  Allocation  Fund.  The net
asset value of Disciplined  Allocation  Fund Class A, Class B and Class C shares
issued in the exchange  will equal the value of the assets of LifeSpan  Balanced
Fund received by Disciplined Allocation Fund. In conjunction with the Closing of
the  Reorganization,  presently  scheduled for June 12, 1998,  LifeSpan Balanced
Fund  will  distribute  the Class A,  Class B and Class C shares of  Disciplined
Allocation  Fund  received by  LifeSpan  Balanced  Fund on the  Closing  Date to
holders  of Class A,  Class B and  Class C shares  of  LifeSpan  Balanced  Fund,
respectively. As a result of the Reorganization, each Class A, Class B and Class
C  LifeSpan  Balanced  Fund  shareholder  will  receive  the  number of full and
fractional  Disciplined Allocation Fund Class A, Class B and Class C shares that
equals in value such  shareholder's pro rata interest in the assets  transferred
to  Disciplined  Allocation  Fund  as of  the  Valuation  Date.  The  Board  has
determined that the interests of existing  LifeSpan  Balanced Fund  shareholders
will not be diluted as a result of the Reorganization. For the reasons set forth
below under "The  Reorganization - Reasons for the  Reorganization,"  the Board,
including the directors who are not "interested  persons" of Oppenheimer  Series
Fund,  Inc.  as  that  term  is  defined  in the  Investment  Company  Act  (the
"Independent  Directors"),  has concluded that the Reorganization is in the best
interests of LifeSpan Balanced Fund and its shareholders and recommends approval
of  the   Reorganization  by  LifeSpan  Balanced  Fund   shareholders.   If  the
Reorganization  is  not  approved,  LifeSpan  Balanced  Fund  will  continue  in
existence and the Board will determine whether to pursue alternative actions.

REASONS FOR THE REORGANIZATION

The Manager  proposed to the Board a  reorganization  of LifeSpan  Balanced Fund
into Disciplined  Allocation Fund so that shareholders of LifeSpan Balanced Fund
may become shareholders of a larger but

                                     -9-

<PAGE>



similar  Fund,  which after such  Reorganization  is  anticipated  to have lower
expenses. The Board considered pro forma information which indicated the expense
ratio of a combined Fund would be lower than that of LifeSpan  Balanced Fund, as
shown  above  under  "Comparative  Fee  Table."  In  addition,  the  Board  also
considered  information  with respect to the historical  performance of LifeSpan
Balanced Fund (since its inception in May, 1995) and Disciplined Allocation Fund
(for the ten year period ending October 31, 1997). For the one year period ended
October 31, 1997, the average annual total returns were higher for each class of
Disciplined Allocation Fund than for LifeSpan Balanced Fund.

The  Board  also  considered  that  the  Reorganization  would  be  a  tax  free
reorganization,  and there would be no sales  charge  imposed in  effecting  the
Reorganization.  The Board concluded that the Reorganization would not result in
dilution to shareholders of LifeSpan Balanced Fund.

TAX CONSEQUENCES OF THE REORGANIZATION

In the opinion of KPMG Peat Marwick LLP, tax adviser to LifeSpan  Balanced Fund,
the Reorganization will qualify as a tax-free  reorganization for Federal income
tax  purposes.  As a  result,  it is  expected  that no  gain  or  loss  will be
recognized  by either Fund,  or by the  shareholders  of either Fund for Federal
income tax purposes as a result of the  Reorganization.  For further information
about  the  tax  consequences  of  the  Reorganization,  see  "Approval  of  the
Reorganization - Tax Aspects" below.

INVESTMENT OBJECTIVES AND POLICIES

The investment  objectives of the Funds are  substantially  the same.  Each Fund
seeks to maximize total return  including both capital  appreciation and income.
Each Fund allocates its assets among stocks and bonds. LifeSpan Balanced Fund is
an  asset  allocation  fund  whereas  Disciplined  Allocation  Fund  invests  in
securities  utilizing  quantitative  asset allocation  tools,  which measure the
relationship  among stocks,  bonds and money market  instruments  in combination
with the  judgement  of the Manager  concerning  current  market  dynamics.  The
investment  policies  of each Fund are  substantially  similar,  the only  major
differences being that LifeSpan Balanced Fund may invest in real estate mortgage
conduits and small,  unseasoned  companies and  Disciplined  Allocation Fund may
invest in mortgage dollar rolls and index-linked  notes. See "Comparison Between
LifeSpan Balanced Fund and Disciplined  Allocation Fund - Investment  Objectives
and Policies" below.

INVESTMENT ADVISORY AND DISTRIBUTION AND SERVICE PLAN FEES

INVESTMENT  ADVISORY FEES.  The terms and conditions of the Investment  Advisory
Agreement of each Fund are similar. Both Funds

                                     -10-

<PAGE>



obtain investment  management  services from the Manager.  The management fee is
computed on the net asset  value of each Fund as of the close of  business  each
day and payable monthly at the following  annual rates:  LifeSpan  Balanced Fund
pays  0.85% of the  average  daily net  assets up to $250  million  and 0.75% of
average daily net assets over $250  million.  Disciplined  Allocation  Fund pays
0.625% of the first $300 million of average annual net assets, 0.50% of the next
$100 million of average annual net assets and 0.45% of average annual net assets
in excess of $400 million.

For  LifeSpan   Balanced   Fund,   the  Manager   employs   three   Subadvisers:
Babson-Stewart Ivory International ("Babson-Stewart") which provides services to
the international  component of the Fund, BEA Associates  ("BEA") which provides
services  to the high  yield/high  risk bond  component  of the Fund and Pilgrim
Baxter & Associates Ltd. ("Pilgrim Baxter") which provides services to the small
cap  component of the Fund (the  "Subadvisers").  Pursuant to the Sub-  Advisory
Agreements,  the Manager pays these  Subadvisers the following fees: (a) monthly
payments to Babson-Stewart at the annual rates of 0.75% of the first $10 million
of the Fund's average daily net assets  allocated to  Babson-Stewart,  0.625% of
the next $15 million, 0.50% of the next $25 million and 0.375% of such assets in
excess of $50  million;  (b)  quarterly  payments to BEA at the annual  rates of
0.45% of the first $25 million of combined average daily net assets allocated to
BEA,  0.40% of the next $25 million,  0.35% of the next $50 million and 0.25% of
the assets in excess of $100  million;  (c) monthly  payments to Pilgrim  Baxter
equal to 0.60% of the  Fund's  average  daily net  assets  allocated  to Pilgrim
Baxter.  For  purposes  of  calculation  of the fees  payable to BEA and Pilgrim
Baxter,  the net  asset  value of those  portions  of the  assets  of each  Fund
subadvised by BEA and Pilgrim Baxter are  aggregated  with those portions of the
net assets of Panorama Series Fund, Inc. managed by such Subadvisers.

DISTRIBUTION AND SERVICE FEES. LifeSpan Balanced Fund and Disciplined Allocation
Fund have both adopted Service Plans for their respective  Class A shares.  Both
Service Plans provide for  reimbursement to the Distributor for a portion of its
costs  incurred in  connection  with the  personal  service and  maintenance  of
accounts that hold Class A shares. Under each plan, payment is made quarterly at
an annual  rate that may not exceed  0.25% of the  average  annual net assets of
Class A shares of the Fund.

LifeSpan  Balanced  Fund and  Disciplined  Allocation  Fund  have  each  adopted
Distribution  and  Service  Plans (the  "Plans")  for Class B and Class C shares
under which each Fund pays the  Distributor  for its services in connection with
distributing Class B and Class C shares and servicing accounts. Under each Plan,
the Fund pays the  Distributor an asset-based  sales charge of 0.75% per year of
Class B shares  outstanding  for six  years or less and on Class C  shares.  The
Funds also each pay the Distributor a service fee of 0.25% per

                                     -11-

<PAGE>



year,  each of which is computed on the average annual net assets of Class B and
Class C shares  determined as of the close of each regular  business day of each
Fund.  The  Distribution  and  Service  Plans  for Class B and Class C shares of
LifeSpan Balanced Fund and Class B and Class C shares of Disciplined  Allocation
Fund are  compensation  plans whereby  payments by the Funds are made at a fixed
rate as specified  above and the Funds'  payments are not limited to reimbursing
the  Distributor's  costs.  The terms of the respective  Plans for each Fund are
substantially the same.

PURCHASES, EXCHANGES AND REDEMPTIONS

Both LifeSpan  Balanced  Fund and  Disciplined  Allocation  Fund are part of the
OppenheimerFunds   complex  of  mutual  funds.  The  procedures  for  purchases,
exchanges and  redemptions  of shares of the Funds are  substantially  the same.
Shares of either  Fund may be  exchanged  for  shares of the same class of other
Oppenheimer Funds offering such shares.

Both  LifeSpan  Balanced  Fund and  Disciplined  Allocation  Fund have a maximum
initial  sales charge of 5.75% on Class A shares.  Investors  who purchase  more
than $1 million ($500,000 or more for purchases by "Retirement Plans" as defined
in "Class A Contingent  Deferred  Sales  Charge" in each Fund's  Prospectus)  in
Class A shares pay no initial sales charge but may have to pay a sales charge of
up to 1% if shares  are sold  within 12  calendar  months  (18 months for shares
purchased  prior to May 1, 1997) from the end of the calendar month during which
shares are purchased.  Each of the Funds has a contingent  deferred sales charge
imposed on the  proceeds of Class B shares  redeemed  within six years of buying
them. The contingent deferred sales charge ("CDSC") varies depending on how long
you hold your shares.  Each of the Funds has a contingent  deferred sales charge
of 1% imposed on the proceeds of Class C shares if redeemed within twelve months
of their purchase. Class A, Class B and Class C shares of Disciplined Allocation
Fund received in the Reorganization will be issued at net asset value, without a
sales  charge and no CDSC will be imposed on any LifeSpan  Balanced  Fund shares
exchanged  for   Disciplined   Allocation   Fund  shares  as  a  result  of  the
Reorganization. However, any CDSC which applies to LifeSpan Balanced Fund shares
will continue to apply to  Disciplined  Allocation  Fund shares  received in the
Reorganization.  Services  available  to  shareholders  of  both  Funds  include
purchase and  redemption  of shares  through  OppenheimerFunds  AccountLink  and
PhoneLink (an automated telephone system), telephone redemptions,  and exchanges
by telephone to other Oppenheimer funds which offer Class A, Class B and Class C
shares, and reinvestment privileges. Please see "Shareholder Services" below and
each Fund's Prospectus for further information.

                            PRINCIPAL RISK FACTORS


                                     -12-

<PAGE>



In evaluating  whether to approve the  Reorganization  and invest in Disciplined
Allocation  Fund,  shareholders  should  carefully  consider the following  risk
factors,  the  information  set forth in this Proxy Statement and Prospectus and
the more  complete  description  of risk  factors  set  forth  in the  documents
incorporated by reference  herein,  including the  Prospectuses of the Funds and
their respective Statements of Additional Information.

STOCK INVESTMENT RISKS. All investments carry risks to some degree, whether they
are risks that market prices of the investment  will fluctuate (this is known as
"market  risk")  or  that  the  underlying  issuer  will  experience   financial
difficulties and may default on its obligation  under a fixed-income  investment
to pay  interest  and repay  principal  (this is referred to as "credit  risk").
These  general  investment  risks  affect the value of both Funds'  investments,
their investment performance, and the prices of their shares. Because both Funds
usually  invest a portion of their  assets in stocks,  the value of each  Fund's
portfolio  will be  affected by changes in the stock  markets.  This market risk
will affect each Fund's net asset values per share,  which will fluctuate as the
values of the Fund's portfolio  securities  change.  Not all stock prices change
uniformly or at the same time, and other factors can affect a particular stock's
price (for example, poor earnings reports by an issuer, loss of major customers,
major  litigation  against an  issuer,  or  changes  in  government  regulations
affecting an industry).  Not all of these  factors can be predicted.  Changes in
the overall market  conditions and prices can occur at any time.  Because of the
types of companies each Fund invests in and the investment techniques used, some
of which may be speculative, both Funds are designed for those investors who are
investing for the long-term and who are willing to accept  greater risks of loss
of their capital in the hope of achieving  capital  appreciation.  Investing for
capital appreciation entails the risk of loss of all or part of your principal.

INTEREST RATE RISKS.  Debt securities are subject to changes in their values due
to changes in prevailing  interest rates.  When prevailing  interest rates fall,
the value of already-issued debt securities  generally rise. When interest rates
rise,  the values of  already-issued  debt  securities  generally  decline.  The
magnitude  of these  fluctuations  will often be greater  for  longer-term  debt
securities than shorter-term debt securities. Each Fund's share prices can go up
or down when  interest  rates change  because of the effect of the change on the
value of the Fund's portfolio of debt  securities.  Each Fund has the ability to
invest  its  assets in  high-yield  securities.  If the Funds  were to invest in
high-yield  securities,  those  securities  may be  subject  to  greater  market
fluctuation  and risk of loss of  income  and  principal  than  lower  yielding,
investment  grade  securities.  There are additional risks of investing in lower
grade securities that are described in the prospectus for each Fund.

                                     -13-

<PAGE>



FOREIGN SECURITIES RISKS. There are risks of foreign investing that increase the
risk of investing in both LifeSpan  Balanced Fund and in Disciplined  Allocation
Fund and also increase the operating costs of both Funds.  For example,  foreign
issuers are not required to use  generally-accepted  accounting  principles.  If
foreign securities are not registered for sale in the U.S. under U.S. securities
laws,  the issuer does not have to comply with the  disclosure  requirements  of
U.S.  laws,  which are generally more stringent than foreign laws. The values of
foreign  securities  investments  will be affected by other  factors,  including
exchange control regulations or currency blockage and possible  expropriation or
nationalization  of  assets.  There are risks of  changes  in  foreign  currency
values.  Because  LifeSpan  Balanced Fund and  Disciplined  Allocation  Fund may
purchase securities  denominated in foreign  currencies,  a change in value of a
foreign  currency  against  the U.S.  dollar will result in a change in the U.S.
dollar value of securities of that Fund denominated in that currency.  There may
also be changes in governmental administration or economic or monetary policy in
the U.S.  or abroad  that can  affect  foreign  investing.  In  addition,  it is
generally more difficult to obtain court judgments  outside the United States if
that  Fund has to sue a  foreign  broker  or  issuer.  Additional  costs  may be
incurred  because  foreign  broker  commissions  are generally  higher than U.S.
rates,  and  there  are  additional  custodial  costs  associated  with  holding
securities  abroad.  More information  about the risks and potential  rewards of
investing in foreign  securities  is contained  in the  Statement of  Additional
Information of each Fund.

DERIVATIVE  INVESTMENTS  RISKS.  Both Funds may invest in a number of  different
kinds of "derivative"  investments.  In general, a "derivative"  investment is a
specially designed  investment whose performance is linked to the performance of
another  investment or security.  The company issuing the instrument may fail to
pay the amount due on the  maturity  of the  instrument.  Also,  the  underlying
investment  or security on which the  derivative  is based,  and the  derivative
itself,  may not  perform  the way  the  Manager  expected  it to  perform.  The
performance of derivative investments may also be influenced by stock market and
interest rate changes in the U.S. and abroad. All of this can mean that the Fund
may realize less principal or income from the investment than expected.  Certain
derivative  investments  held by the  Funds may  trade in the  over-the  counter
market and may be illiquid.

HEDGING  INSTRUMENTS RISKS. Each Fund may use certain hedging  instruments.  The
use of hedging  instruments  requires special skills and knowledge of investment
techniques  that are  different  than  what is  required  for  normal  portfolio
management. If the Manager uses a hedging instrument at the wrong time or judges
market conditions incorrectly,  hedging strategies may reduce the Fund's return.
Losses  could also be  experienced  if the  prices of its  futures  and  options
positions were not correlated with its

                                     -14-

<PAGE>



other investments or if it could not close out a position because of an illiquid
market  for the  future or  option.  Options  trading  involves  the  payment of
premiums and has special tax effects on the Funds.  There are also special risks
in particular hedging strategies.  For example, if a covered call written by the
Fund is exercised on a security  that has  increased in value,  the Fund will be
required to sell the  security at the call price and will not be able to realize
any profit if the security has increased in value above the call price.  The use
of Forward  Contracts  may reduce the gain that would  otherwise  result  from a
change in the relationship  between the U.S. dollar and a foreign  currency.  To
limit its exposure in foreign currency exchange contracts, the Funds limit their
exposure to the amount of its assets  denominated in foreign currency.  Interest
rate  swaps  are  subject  to risk that the  other  party  will fail to meet its
obligations (or that the underlying issuer will fail to pay on time), as well as
interest  rate  risks.  A Fund  could be  obligated  to pay more  under its swap
agreements than it received under them, as a result of interest rate changes.

LOWER-GRADE  SECURITIES  RISKS.  The  Funds  can  invest  in  high-yield,  below
investment grade debt securities  (including both rated and unrated securities).
These "lower-grade" securities are commonly known as "junk bonds". All corporate
debt  securities  (whether  foreign or  domestic)  are subject to some degree of
credit risk. High yield, lower-grade securities, whether rated or unrated, often
have  speculative  characteristics  and  special  risks  that make them  riskier
investments  than investment  grade  securities.  They may be subject to greater
market  fluctuations  and  risk of loss  of  income  and  principal  than  lower
yielding,  investment grade  securities.  There may be less of a market for them
and  therefore  they may be harder to sell at an  acceptable  price.  There is a
relatively greater possibility that the issuer's earnings may be insufficient to
make the payments of interest and principal  due on the bonds.  The issuer's low
creditworthiness  may  increase  the  potential  for its  insolvency.  During an
economic  downturn,  lower-grade  securities  might  decline  in value more than
investment grade  securities.  For foreign  lower-grade  debt securities,  these
risks are in addition to the risks of investing in foreign securities, described
above.  These risks mean that the Fund may not achieve the expected  income from
lower-grade  securities,  and that the Fund's  net asset  value per share may be
affected by declines in value of these securities.

EMERGING  MARKETS RISKS.  Investments in emerging  market  countries may involve
risks  in  addition  to  those  identified  above  for  investments  in  foreign
securities.  Securities  issued by emerging  market  countries  and by companies
located in those countries may be subject to extended settlement periods,  and a
Fund might not receive  principal and/or income on a timely basis. Its net asset
values could be affected.  Emerging  market  countries  may have  smaller,  less
well-developed markets and exchanges; there may be a

                                     -15-

<PAGE>



lack of liquidity for emerging  market  securities;  interest  rates and foreign
currency exchange rates may be more volatile;  sovereign  limitations on foreign
investments may be more likely to be imposed;  there may be significant  balance
of payment  deficits;  and their  economies  and  markets  may respond in a more
volatile manner to economic changes than those of developed countries.

                        APPROVAL OF THE REORGANIZATION
                                (THE PROPOSAL)

REASONS FOR THE REORGANIZATION

At a meeting of the Board of Directors of the Company held on December 11, 1997,
the  Directors  reviewed  and  discussed  materials  relevant  to  the  proposed
Reorganization.  The Board,  including the  Independent  Directors,  unanimously
approved the Reorganization and recommended to shareholders of LifeSpan Balanced
Fund that they approve the Reorganization. Both Funds offer Class A, Class B and
Class C shares and the terms and conditions of their offer, sale, redemption and
exchange, distribution arrangements, expenses borne separately by each class and
other related matters are  essentially the same. The Board  considered that this
will facilitate an exchange. In the reorganization, Class A, Class B and Class C
shareholders of LifeSpan Balanced Fund will receive Class A, Class B and Class C
shares, respectively, of Disciplined Allocation Fund.

In considering the proposed Reorganization, the Board reviewed information which
demonstrated  that  LifeSpan  Balanced  Fund  is  a  smaller  fund.  It  is  not
anticipated that LifeSpan  Balanced Fund will increase  substantially in size in
the near future. After the Reorganization, the shareholders of LifeSpan Balanced
Fund  will be  shareholders  of a  larger  fund  and  will  likely  incur  lower
operating,  transfer  agency and other  expenses.  Thus  economies  of scale may
benefit shareholders of LifeSpan Balanced Fund. LifeSpan Balanced Fund had $67.7
million in net assets as of the end of the Fund's  October 31, 1997 fiscal year.
In comparison,  Disciplined  Allocation Fund had $253.5 million in net assets as
of October 31, 1997.

Among several other factors,  the Board focused on the investment  objectives of
the two  Funds.  Oppenheimer  LifeSpan  Balanced  Fund  seeks a blend of capital
appreciation and income. Disciplined Allocation Fund seeks to maximize the total
investment  return  (including  both  capital   appreciation  and  income).  The
investment  techniques  and  strategies of the Funds are similar with respect to
purchasing equity securities, debt securities,  warrants and rights, convertible
securities,  foreign securities,  lower-grade debt securities,  U. S. Government
securities,   mortgage-backed   securities   and  CMOs,   stripped   securities,
asset-backed  securities,  inverse floating rate instruments,  structured notes,
short-term debt securities, when-issued and delayed delivery transactions,

                                     -16-

<PAGE>



Eurodollars and Yankee Dollar Bank transactions, repurchase agreements, illiquid
and restricted securities,  hedging instruments and derivative instruments.  The
only major differences between the Funds regarding permitted investments is that
LifeSpan  Balanced Fund may invest in real estate mortgage  investment  conduits
and small, unseasoned companies.  Disciplined Allocation Fund has the ability to
invest in mortgage  dollar rolls and  index-linked  notes,  although it does not
intend  on  investing  more  than  5% of its  net  assets  in  such  securities.
Accordingly,  the Board determined that the investment objectives and techniques
were comparable.

The  Board,  in  reviewing  financial  information,  considered  the  investment
advisory fee rate of both Funds (also known as the "management  fee rate").  The
management  fee rate for each Fund is  discussed  under  "Synopsis -  Investment
Advisory and Distribution and Service Plan Fees" above. LifeSpan Balanced Fund's
management  fee for its fiscal year ended  October 31, 1997 was 0.85% of average
annual  net  assets  for  Class  A,  Class  B and  Class C  shares.  Disciplined
Allocation  Fund's management fee for the fiscal year ended October 31, 1997 was
0.62% of the average  annual net assets for Class A, Class B and Class C shares.
If the two Funds were combined, the shareholders of LifeSpan Balanced Fund would
have a management  fee of  approximately  0.62% for Class A, Class B and Class C
shares.  The Board  considered pro forma  information  which  indicated that the
expense ratio of a combined Fund would  therefore be lower than that of LifeSpan
Balanced Fund.

In addition to the above, the Board also considered  information with respect to
the historical  performance of LifeSpan Balanced Fund and Disciplined Allocation
Fund, including the performance information contained in Exhibit B to this Proxy
Statement.  During  the time  period  that  LifeSpan  Balanced  Fund has been in
existence,  its  performance  has been well below the performance of Disciplined
Allocation Fund.

The Board also considered that the  Reorganization  is expected to be a tax free
reorganization,  and there would be no sales  charge  imposed in  effecting  the
Reorganization.  The Board concluded that the Reorganization would not result in
dilution of the interests of existing shareholders of LifeSpan Balanced Fund.

THE REORGANIZATION

The Reorganization  Agreement (a copy of which is set forth in full as Exhibit A
to this Proxy  Statement and  Prospectus)  contemplates a  reorganization  under
which (i) all of the  assets  of  LifeSpan  Balanced  Fund  other  than the cash
reserve  described below (the "Cash Reserve") will be transferred to Disciplined
Allocation  Fund in  exchange  for  Class  A,  Class B and  Class  C  shares  of
Disciplined  Allocation  Fund,  (ii) these shares will be distributed  among the
shareholders of LifeSpan Balanced Fund in complete liquidation of

                                     -17-

<PAGE>



LifeSpan  Balanced Fund, and (iii) the outstanding  shares of LifeSpan  Balanced
Fund  will be  canceled.  Disciplined  Allocation  Fund will not  assume  any of
LifeSpan Balanced Fund's liabilities except for portfolio  securities  purchased
which have not settled  and  outstanding  shareholder  redemption  and  dividend
checks.

The result of  effectuating  the  Reorganization  would be that: (i) Disciplined
Allocation  Fund  will add to its gross  assets  all of the  assets  (net of any
liability for  portfolio  securities  purchased but not settled and  outstanding
shareholder redemption and dividend checks) of LifeSpan Balanced Fund other than
its Cash Reserve;  and (ii) the shareholders of LifeSpan Balanced Fund as of the
close of business on the Closing Date will become  shareholders  of either Class
A, Class B or Class C shares of Disciplined Allocation Fund.

Shareholders of LifeSpan Balanced Fund who vote their Class A, Class B and Class
C shares in favor of the  Reorganization,  will be  electing in effect to redeem
their shares of LifeSpan  Balanced Fund(at net asset value on the Valuation Date
referred  to below  under  "Method of  Carrying  Out the  Reorganization  Plan,"
calculated  after  subtracting  the Cash  Reserve)  and reinvest the proceeds in
Class A, Class B or Class C shares of Disciplined  Allocation  Fund at net asset
value without sales charge and without  recognition  of taxable gain or loss for
Federal income tax purposes (see "Tax Aspects of the Reorganization" below). The
Cash Reserve is that amount  retained by LifeSpan  Balanced Fund which is deemed
sufficient  in the  discretion  of the Board for the  payment  of: (a)  LifeSpan
Balanced  Fund's expenses of liquidation,  and (b) its  liabilities,  other than
those  assumed  by  Disciplined  Allocation  Fund.  LifeSpan  Balanced  Fund and
Disciplined   Allocation  Fund  will  bear  all  of  their  respective  expenses
associated  with  the   Reorganization,   as  set  forth  under  "Costs  of  the
Solicitation  and the  Reorganization"  above.  Management  estimates  that such
expenses  associated with the  Reorganization  to be borne by LifeSpan  Balanced
Fund will not exceed  $28,700.  Liabilities  as of the date of the  transfer  of
assets will consist primarily of accrued but unpaid normal operating expenses of
LifeSpan Balanced Fund, excluding the cost of any portfolio securities purchased
but not yet settled, and outstanding shareholder redemption and dividend checks.
See "Method of Carrying Out the Reorganization Plan" below.

The Reorganization  Agreement provides for coordination  between the Funds as to
their respective portfolios so that, after the Closing,  Disciplined  Allocation
Fund will be in compliance with all of its investment policies and restrictions.
In that  regard,  the Manager does not  anticipate  selling more than 50% of the
existing  securities in the LifeSpan Balanced Fund portfolio.  LifeSpan Balanced
Fund  will  recognize  capital  gain or  loss on any  sales  made  prior  to the
Reorganization pursuant to this paragraph.

TAX ASPECTS OF THE REORGANIZATION

                                     -18-

<PAGE>



Immediately  prior  to the  Valuation  Date  referred  to in the  Reorganization
Agreement,  LifeSpan  Balanced  Fund will pay a  dividend  or  dividends  which,
together with all previous  dividends,  will have the effect of  distributing to
LifeSpan Balanced Fund's shareholders all of LifeSpan Balanced Fund's investment
company  taxable income for taxable years ending on or prior to the Closing Date
(computed without regard to any deduction for dividends paid) and all of its net
capital  gain,  if any,  realized  in  taxable  years  ending on or prior to the
Closing Date (after  reduction  for any available  capital loss  carry-forward).
Such  dividends  will be  included in the  taxable  income of LifeSpan  Balanced
Fund's shareholders as ordinary income and capital gain, respectively.

The  exchange of the assets of LifeSpan  Balanced  Fund for Class A, Class B and
Class C shares of Disciplined  Allocation Fund and the assumption by Disciplined
Allocation Fund of certain  liabilities of LifeSpan Balanced Fund is intended to
qualify  for Federal  income tax  purposes  as a tax-free  reorganization  under
Section 368(a)(1) of the Internal Revenue Code of 1986, as amended (the "Code").
LifeSpan  Balanced Fund has represented to KPMG Peat Marwick LLP, tax adviser to
LifeSpan  Balanced  Fund,  that  there  is no  plan  or  intention  by any  Fund
shareholder who owns 5% or more of LifeSpan Balanced Fund's outstanding  shares,
and, to LifeSpan  Balanced Fund's best knowledge,  there is no plan or intention
on the part of the remaining  LifeSpan  Balanced Fund  shareholders,  to redeem,
sell,  exchange or otherwise dispose of a number of Disciplined  Allocation Fund
Class A, Class B or Class C shares received in the transaction that would reduce
LifeSpan Balanced Fund  shareholders'  ownership of Disciplined  Allocation Fund
shares to a number of shares  having a value,  as of the Closing  Date,  of less
than 50% of the value of all the formerly  outstanding  LifeSpan  Balanced  Fund
shares as of the same date.  Disciplined  Allocation Fund and LifeSpan  Balanced
Fund have each  represented  to KPMG Peat Marwick LLP,  that,  as of the Closing
Date,  it will  qualify  as a  regulated  investment  company  or will  meet the
diversification test of Section 368(a)(2)(F)(ii) of the Code.

As a condition to the closing of the Reorganization, Disciplined Allocation Fund
and LifeSpan  Balanced Fund will receive the opinion of KPMG Peat Marwick LLP to
the   effect   that,   based  on  the   Reorganization   Agreement,   the  above
representations,  existing provisions of the Code,  Treasury  Regulations issued
thereunder, current Revenue Rulings, Revenue Procedures and court decisions, for
Federal income tax purposes:

      1. The  transactions  contemplated  by the  Reorganization  Agreement will
qualify  as  a  tax-free   "reorganization"   within  the   meaning  of  Section
368(a)(1)(c) of the Code.

      2.  LifeSpan  Balanced  Fund and  Disciplined  Allocation  Fund  will each
qualify as "a party to a reorganization" within the

                                     -19-

<PAGE>



meaning of Section 368(b) of the Code.

      3. No gain or loss will be  recognized  by the  shareholders  of  LifeSpan
Balanced  Fund upon the  distribution  of Class A,  Class B or Class C shares of
beneficial  interest  in  Disciplined  Allocation  Fund to the  shareholders  of
LifeSpan Balanced Fund pursuant to Section 354(a)(1) of the Code.

      4. Under Section  361(a) of the Code no gain or loss will be recognized by
LifeSpan  Balanced  Fund by  reason  of the  transfer  of its  assets  solely in
exchange for Class A, Class B or Class C shares of Disciplined Allocation Fund.

      5. Under Section 1032(a) of the Code no gain or loss will be recognized by
Disciplined  Allocation  Fund by reason of the  transfer  of  LifeSpan  Balanced
Fund's  assets  solely in  exchange  for  Class A,  Class B or Class C shares of
Disciplined Allocation Fund.

      6. The shareholders of LifeSpan Balanced Fund will have the same tax basis
and  holding  period  for the  shares  of  beneficial  interest  in  Disciplined
Allocation  Fund that they receive as they had for LifeSpan  Balanced Fund stock
that they  previously  held,  pursuant to Sections  358(a)(1) and 1223(1) of the
Code, respectively.

      7. The  securities  transferred  by LifeSpan  Balanced Fund to Disciplined
Allocation  Fund will have the same tax basis and holding period in the hands of
Disciplined  Allocation Fund as they had for LifeSpan Balanced Fund, pursuant to
Sections 362(b) and 1223(2) of the Code, respectively.

Shareholders  of  LifeSpan  Balanced  Fund  should  consult  their tax  advisors
regarding the effect, if any, of the Reorganization in light of their individual
circumstances. Since the foregoing discussion relates only to the Federal income
tax consequences of the  Reorganization,  shareholders of LifeSpan Balanced Fund
should also consult  their tax advisors as to state and local tax  consequences,
if any, of the Reorganization.

CAPITALIZATION TABLE (UNAUDITED)

The table  below sets forth the  capitalization  of LifeSpan  Balanced  Fund and
Disciplined Allocation Fund and indicates the pro forma combined  capitalization
as of October 31, 1997 as if the Reorganization had occurred on that date.

OCTOBER 31, 1997
                                                                    NET ASSET
                                                  SHARES            VALUE
                                NET ASSETS        OUTSTANDING       PER SHARE


                                     -20-

<PAGE>



LifeSpan Balanced Fund
     Class A                    $62,261,972       4,919,634         $12.66
     Class B                    $ 4,761,973         374,239         $12.72
     Class C                    $   682,811          54,094         $12.62

Disciplined Allocation Fund
     Class A                    $243,267,192      14,469,482        $16.81
     Class B                    $  8,720,474         513,404        $16.99
     Class C                    $  1,473,475          88,237        $16.70

Disciplined Allocation Fund
(Pro Forma Surviving Fund)
     Class A                    $305,529,164      18,173,347        $16.81
     Class B                    $  13,482,447        793,757        $16.99
     Class C                    $   2,156,286        129,124        $16.70

Reflects issuance of 3,703,865 of Class A shares,  280,353 of Class B shares and
40,887 of Class C shares of Disciplined  Allocation Fund in a tax-free  exchange
for the net assets of LifeSpan Balanced Fund, aggregating $67,706,756.

The pro forma  ratio of  expenses  to  average  annual net assets of the Class A
shares at  October  31,  1997  would  have been  1.11%.  The pro forma  ratio of
expenses  to average  annual net  assets of Class B shares at October  31,  1997
would have been 1.89%.  The pro forma  ratio of  expenses to average  annual net
assets of Class C shares at October 31, 1997 would have been 1.90%.

                              COMPARISON BETWEEN
                          LIFESPAN BALANCED FUND AND
                         DISCIPLINED ALLOCATION FUND

Information  about LifeSpan  Balanced Fund and  Disciplined  Allocation  Fund is
presented below. Additional information about Disciplined Allocation Fund is set
forth in its Prospectus  which  accompanies this Proxy Statement and Prospectus.
More information about both Funds is set forth in documents that may be obtained
upon request of the transfer agent or upon review at the offices of the SEC. See
"Additional Information- Public Information."

INVESTMENT OBJECTIVES AND POLICIES

DISCIPLINED  ALLOCATION  FUND.  In deciding  whether this Fund should  invest in
stocks,  bonds or money market  instruments,  the Manager utilizes  quantitative
asset  allocation  tools,  which  measure  the  relationship  among  these asset
categories,  in combination with the judgment of the Manager  concerning current
market dynamics.  Allocating assets among different types of investments  allows
this Fund to take  advantage  of  opportunities  in  different  segments  of the
securities markets, but also subjects this Fund to the risks of

                                     -21-

<PAGE>



those market segments.

In selecting stocks for this Fund's  portfolio,  the Manager searches for stocks
with low price-earnings  ratios (for example,  below the price-earnings ratio of
the S&P 500  Index)  which in many cases may  indicate a stock is  out-of-favor.
When a company then  demonstrates  better  earnings than what most analysts were
expecting,  this is referred to as a favorable earnings surprise. This may cause
investors and analysts to re-evaluate the company's  earnings  expectations  and
price-earnings multiple, which in turn may cause the company's stock to increase
in value.  This Fund may  invest in a  variety  of equity  securities  including
foreign and domestic common stocks, preferred securities, convertible securities
and warrants, which are further described below.

This Fund may invest in a variety of bonds and other debt  securities  including
corporate debt  obligations,  U.S.  Government  securities,  foreign  government
securities, municipal obligations,  mortgage-backed and asset-backed securities,
adjustable rate securities, stripped securities, custodial receipts for Treasury
certificates,   zero  coupon   bonds,   equipment   trust   certificates,   loan
participation notes, structured notes and money market instruments.  This Fund's
debt securities are expected to have weighted average maturity of 6 to 14 years.
At least 25% of this Fund's total assets will be invested in fixed income senior
securities. Otherwise, this Fund is not required to invest a fixed amount in any
asset class, and the amounts invested in each class will vary over time.

This  Fund may  invest up to 20% of its total  assets in the  aggregate  in debt
securities and preferred  stocks rated below  investment  grade (commonly called
"junk  bonds")  and  unrated  securities  determined  by  the  Manager  to be of
comparable credit quality.  However,  the Manager does not intend to invest more
than 10% of this  Fund's  assets in below  investment  grade  securities  in the
current year.  These  securities are subject to special risks,  described below.
This Fund will not invest in  securities  rated below B at the time of purchase.
Unrated debt securities will not exceed 10% of this Fund's total assets.

This Fund may invest up to 10% of its total  assets in  mortgage  dollar  rolls.
This Fund may also invest up to 5% of its total assets in inverse  floating rate
instruments,  which  are a type of  derivative  security.  Consistent  with  the
foregoing  policies,  this Fund may invest to a limited  degree in securities of
foreign issuers.  All of these types of securities are described below.  Subject
to its investment policies and restrictions,  this Fund may seek to increase its
income by  lending  portfolio  securities  to  brokers,  dealers  and  financial
institutions in transactions other than repurchase agreements.


                                     -22-

<PAGE>



Under  normal  market  conditions,  this Fund may  invest up to 40% of its total
assets in short-term debt securities,  such as money market instruments and U.S.
Government securities. When market conditions are unstable, this Fund may invest
substantial  amounts of its assets in short-term  debt  securities for temporary
defensive purposes. This Fund's portfolio managers may employ special investment
techniques  in selecting  investments  for this Fund.  These are also  described
below. Additional Information about them may be found under the same headings in
the Fund's Statement of Additional Information.

LIFESPAN  BALANCED FUND.  This Fund is an asset  allocation  fund which seeks to
achieve  its  investment  objective  by  allocating  its assets  among two broad
classes  of  investments-stocks  and  bonds.  The stock  class  includes  equity
securities  of  many  types.  The  bond  class  includes  several  varieties  of
fixed-income instruments. Allocating assets among different types of investments
allows  this  Fund  to  take  advantage  of  a  greater  variety  of  investment
opportunities  than funds that invest in only one asset class, but also subjects
the Fund to the risks of those types of investments.  The general risks of stock
and bond investments are discussed in "Principal Risk Factors" below.

The  Manager  has the ability to allocate  the Fund's  assets  within  specified
ranges.   This  Fund's  normal  allocation   indicates  the  benchmark  for  its
combination of investments in each asset class over time. As market and economic
conditions  change,  however,  the  Manager may adjust the asset mix between the
stock and bond  classes  within a normal asset  allocation  range as long as the
relative risk and return  characteristics  of this Fund remain distinct and this
Fund's  investment  objective  is  preserved.  The Manager  will  review  normal
allocations between the stock and bond classes quarterly and, if necessary, will
rebalance the investment allocation at that time. Additional  adjustments may be
made if an asset allocation shift of 5% or more is warranted.

PERMITTED INVESTMENTS BY BOTH LIFESPAN BALANCED FUND AND DISCIPLINED  ALLOCATION
FUND

STOCK INVESTMENTS.  Both Disciplined  Allocation Fund and LifeSpan Balanced Fund
each normally invest a substantial portion of their assets in stocks. Therefore,
the value of each  Fund's  portfolio  will be  affected  by changes in the stock
markets.  At times,  the stock  markets can be  volatile,  and stock  prices can
change substantially.  This market risk will affect each Fund's net asset values
per  share,  which  will  fluctuate  as the  values  of  each  Fund's  portfolio
securities  change.  The types of securities  each Fund  purchases are described
below. Each Fund attempts to limit market risks by diversifying its investments,
that is, by not holding a substantial  amount of stock of any one company and by
not investing too great a percentage of the Fund's assets in any one company,

                                     -23-

<PAGE>



industry or group or industries.

Because  of the types of  securities  each Fund  invests  in and the  investment
techniques each Fund uses, some of which may be  speculative,  both  Disciplined
Allocation  Fund and LifeSpan  Balanced  Fund are designed for investors who are
investing for the long-term and who are willing to accept  greater risks of loss
of their investment in the hope of achieving capital appreciation.  Neither Fund
is intended for investors  seeking  assured income and  preservation of capital.
Investing  for capital  appreciation  entails the risk of loss of all or part of
your  investment.  Because changes in securities  market prices can occur at any
time,  there is no  assurance  that  either  Fund will  achieve  its  investment
objective,  and when you redeem your shares, they may be worth more or less than
what you paid for them.

FOREIGN SECURITIES.  Both Funds may purchase equity securities issued by foreign
companies and debt  securities  issued or guaranteed by foreign  governments  or
their agencies.  Both Funds may purchase  securities of companies located in any
country,  developed or  underdeveloped.  Investments in securities of issuers in
underdeveloped  countries or countries that have emerging markets  generally may
offer  greater  potential  for gain but involve more risk and may be  considered
highly speculative.  As a matter of Fundamental policy,  Disciplined  Allocation
Fund may not invest  more than 10% of its total  assets in  foreign  securities,
except that the Fund may invest up to 25% of its total assets in foreign  equity
and debt  securities  that are (i)  issued,  assumed  or  guaranteed  by foreign
governments or their political  subdivisions or instrumentalities,  (ii) assumed
or guaranteed by domestic issuers,  including  Eurodollar  securities,  or (iii)
issued,  assumed or guaranteed by foreign  issuers  having a class of securities
listed for trading on The New York Stock Exchange.  Disciplined  Allocation Fund
will hold  foreign  currency  only in  connection  with the  purchase or sale of
foreign securities.

LifeSpan  Balanced Fund may invest a portion of its assets in companies  located
in emerging  markets.  Both Funds also may invest in ADRs, EDRs and GDRs.  These
are receipts issued by a U.S. bank or trust company which evidence  ownership of
underlying  securities of foreign companies,  obligations of foreign branches of
U. S. banks  (denominated  in  Eurodollars)  and U. S. branches of foreign banks
(Yankee dollars) as well as foreign branches of foreign banks.

There are special  risks in investing in foreign  securities.  More  information
about the risks and  potential  rewards of  investing in foreign  securities  is
described  above  in  the  section  entitled  "Principal  Risk  Factors"  and is
contained in each Fund's respective Statement of Additional Information.

CONVERTIBLE SECURITIES. Both Funds may invest in convertible

                                     -24-

<PAGE>



securities.  Convertible  securities  are  bonds,  preferred  stocks  and  other
securities  that  normally pay a fixed rate of interest or dividend and give the
owner the option to convert the security into common  stock.  While the value of
convertible  securities  depends in part on interest rate changes and the credit
quality  of the  issuer,  the price will also  change  based on the price of the
underlying stock. While convertible securities generally have less potential for
gain than  common  stock,  their  income  provides a cushion  against  the stock
price's declines. They generally pay less income than non-convertible bonds. The
Manager generally  analyzes these investments from the perspective of the growth
potential of the underlying stock and treats them as "equity substitutes."

PORTFOLIO  TURNOVER.  "Portfolio  turnover"  describes  the rate at which a fund
traded its portfolio  securities during its last fiscal year. For example,  if a
fund sold all of its  securities  during the year,  its portfolio  turnover rate
would have been 100%.  Portfolio  turnover affects  brokerage costs a fund pays.
The Funds ordinarily do not engage in short-term trading to try to achieve their
objectives.  The  Financial  Highlights  table in each of the Fund's  prospectus
shows the Fund's portfolio turnover rates during prior fiscal years.

HEDGING. Both Funds may write covered call options on securities,  stock or bond
indices and foreign  currency.  Each Fund may purchase and sell certain kinds of
futures  contracts,  forward  contracts,  and options on futures,  broadly-based
stock or bond indices and foreign  currencies,  or enter into interest rate swap
agreements.  These are all referred to as "hedging instruments." While each Fund
currently  does not  engage  extensively  in  hedging,  each  Fund may use these
instruments for hedging purposes and, in the case of covered calls,  non-hedging
purposes.  The hedging  instruments the Funds may use are described below and in
greater detail in "Other Investment  Techniques and Strategies"  section in each
Fund's respective Statement of Additional Information.

The Funds may use hedging instruments for a number of purposes. Each Fund may do
so to try to manage  its  exposure  to the  possibility  that the  prices of its
portfolio  securities may decline,  or to establish a position in the securities
market as a temporary substitute for purchasing individual securities. Each Fund
may do so to try to manage its  exposure to  changing  interest  rates.  Some of
these  strategies,  such as selling  futures,  buying puts and  writing  covered
calls,  hedge the Fund's  portfolio  against price  fluctuations.  Other hedging
strategies, such as buying futures and call options, tend to increase the Funds'
exposure to the securities market.

Forward  Contracts.  Forward  contracts  are used by both Funds to try to manage
foreign currency risks on foreign investments. Foreign currency options are used
to try to protect against declines in the

                                     -25-

<PAGE>



dollar  value of  foreign  securities  the Funds own,  or to protect  against an
increase in the dollar cost of buying foreign  securities.  Writing covered call
options may also provide income to the Funds for liquidity  purposes or to raise
cash to distribute to shareholders.

Futures.  Both  Funds  may buy and sell  futures  contracts  that  relate to (1)
foreign  currencies  (these  are  referred  to as  "Forward  Contracts"  and are
discussed  below),  (2) financial  indices,  such as U.S. or foreign  government
securities  indices,  corporate  debt  securities  indices or equity  securities
indices  (these are  referred to as Financial  Futures)  and (3) interest  rates
(those are  referred to as Interest  Rate  Futures).  These types of Futures are
described in "Hedging" in the Statement of Additional Information of each Fund.

Covered  Call  Options and  Options on  Futures.  Both Funds may write (that is,
sell) covered call options on  securities,  indices and foreign  currencies  for
hedging or liquidity  purposes and write call options on Futures for hedging and
non-hedging  purposes.  Each call the Funds write must be "covered".  This means
the Fund must own the  investment  on which the call was  written or it must own
other  securities that are acceptable for the escrow  arrangements  required for
calls  while  the call is  outstanding  or,  in the  case of  calls on  Futures,
segregate appropriate liquid assets. When either Fund writes a call, it receives
cash  (called a  premium).  The call  gives the  buyer  the  ability  to buy the
investment  on which the call was written from the Fund at the call price during
the period in which the call may be  exercised.  If the value of the  investment
does not rise  above  the call  price,  it is likely  that the call  will  lapse
without  being  exercised,  while  the  Fund  keeps  the cash  premium  (and the
investment).

LifeSpan  Balanced  Fund may purchase and sell put options on Futures.  Buying a
put on an  investment  gives the Fund the right to sell the  investment at a set
price  to a  seller  of a put on that  investment.  LifeSpan  may  sell a put on
Futures only if the puts are covered by segregated liquid assets.

Each Fund may sell  covered  call  options  that are  traded on U.S.  or foreign
securities or commodity  exchanges as well as  over-the-counter  markets. In the
case of foreign currency options, they may be quoted by major recognized dealers
in those options.

Hedging  instruments  can be volatile  investments and may involve special risks
which are described  above in the section  entitled  "Principal  Risk  Factors."
Options trading  involves the payment of premiums and has special tax effects on
either Fund. There are also special risks in particular hedging strategies. If a
covered  call  written by either Fund is  exercised  on an  investment  that has
increased in value, either Fund will be required to sell the

                                     -26-

<PAGE>



investment  at the call price and will not be able to realize  any profit if the
investment has increased in value above the call price.  In writing a put, there
is a risk that either Fund may be required to buy the  underlying  security at a
disadvantageous  price.  The use of forward  contracts  may reduce the gain that
would otherwise result from a change in the relationship between the U.S. dollar
and a foreign  currency.  These risks are  described  in greater  detail in each
Fund's respective Statement of Additional Information.

LOANS OF PORTFOLIO SECURITIES.  To raise cash for liquidity purposes, both Funds
may lend their  portfolio  securities  to brokers,  dealers and other  financial
institutions.  Both  Disciplined  Allocation  Fund and  LifeSpan  Balanced  Fund
restrict loans of securities  wherein the value of the securities loaned exceeds
33 1/3% of the value of that Fund's total assets. These loans are subject to the
conditions in each Fund's  Statements of  Additional  Information.  Neither Fund
presently intends to lend its portfolio securities,  but if they do the value of
the  securities  loaned is not expected to exceed 5% of each Fund's total assets
in the coming year.

ILLIQUID AND RESTRICTED SECURITIES. Both of the Funds may invest in illiquid and
restricted securities.  Investments may be illiquid because of the absence of an
active  trading  market,  making it  difficult  to value them or dispose of them
promptly  at an  acceptable  price.  A  restricted  security  is one  that has a
contractual  restriction on its resale or which cannot be sold publicly until it
is registered under the Securities Act of 1933. Disciplined Allocation Fund will
not  invest  more  than 10% of its  total  assets  in  illiquid  and  restricted
securities  (the Board may increase  that limit to 15% of net assets).  LifeSpan
Balanced  Fund will not invest more than 15% of its net assets in  illiquid  and
restricted  securities.  The percentage limitation on these investments does not
apply to certain restricted securities that are eligible for resale to qualified
institutional purchasers. The Manager monitors holdings of such securities on an
ongoing  basis  and at times a Fund may be  required  to sell some  holdings  to
maintain adequate liquidity.

DERIVATIVE INVESTMENTS.  Both Funds can invest in a number of different kinds of
"derivative  investments."  Each  Fund may use some  types  of  derivatives  for
hedging  purposes,  and may  invest in  others to seek  income.  In  general,  a
"derivative investment" is a specially-designed  investment whose performance is
linked to the performance of another investment or security,  such as an option,
future, index, currency or commodity. LifeSpan Balanced Fund may not purchase or
sell physical  commodities.  The Funds may purchase and sell foreign currency in
hedging transactions. This policy also does not prevent the Funds from buying or
selling options and futures contracts or from investing in securities or other

                                     -27-

<PAGE>



instruments backed by physical  commodities.  In the broadest sense,  derivative
investments include  exchange-traded options and futures contracts (please refer
to "Hedging" above).  Investing in derivative investments involves certain risks
which are described above in the section entitled "Principal Risk Factors."

REPURCHASE  AGREEMENTS.  Each of the Funds may enter into repurchase agreements.
Both Funds will not enter into  repurchase  agreements that will cause more than
10% of its net assets to be invested in illiquid and restricted securities which
include repurchase  agreements having a maturity beyond 7 days.  However, if the
vendor  fails to pay the  resale  price on the  delivery  date,  the  Funds  may
experience costs in disposing of the collateral and losses if there is any delay
in doing so.

WARRANTS AND RIGHTS.  Warrants  basically  are options to purchase  stock at set
prices  that are valid  for a limited  period of time.  Rights  are  similar  to
warrants but normally have a short duration and are distributed  directly by the
issuer to its shareholders. Both Funds may invest up to 5% of their total assets
in warrants or rights. That 5% limitation does not apply to warrants acquired as
part of units with other securities or that are attached to other securities. No
more than 2% of either  Fund's total assets may be invested in warrants that are
not listed on either The New York Stock Exchange or The American Stock Exchange.

"WHEN-ISSUED"  AND  DELAYED  DELIVERY  TRANSACTIONS.  Both  Funds  may  purchase
securities  on a  "when-issued"  basis and may purchase or sell  securities on a
"delayed delivery" basis. These terms refer to securities that have been created
and for  which a market  exists,  but  which  are not  available  for  immediate
delivery.  There may be a risk of loss to the Fund if the value of the  security
declines prior to the settlement date.

U.S. GOVERNMENT SECURITIES.  Both Funds may invest in U.S. Government Securities
which include debt securities issued or guaranteed by the U.S. Government or its
agencies and instrumentalities.  Certain U.S. Government  Securities,  including
U.S. Treasury bills,  notes and bonds, and mortgage  participation  certificates
guaranteed by the Government  National Mortgage  Association  ("Ginnie Mae") are
supported by the full faith and credit of the U.S. Government,  which in general
terms means that the U.S. Treasury stands behind the obligation to pay principal
and interest.

Ginnie  Mae  certificates  are one  type  of  mortgage-related  U.S.  Government
Security  the  Funds  may  invest  in.  The  Funds  may  also  invest  in  other
mortgage-related  U.S.  Government  Securities  that are issued or guaranteed by
federal agencies or government-sponsored entities but which are not supported by
the full faith and credit of the U.S. Government. Those securities

                                     -28-

<PAGE>



include obligations supported by the right of the issuer to borrow from the U.S.
Treasury,  such as  obligations  of the Federal Home Loan  Mortgage  Corporation
("Freddie   Mac"),   obligations   supported   only   by  the   credit   of  the
instrumentality,  such as the Federal  National  Mortgage  Association  ("Fannie
Mae") or the Student Loan Marketing  Association,  and obligations  supported by
the  discretionary  authority  of the  U.S.  Government  to  repurchase  certain
obligations of U.S. Government agencies or instrumentalities such as the Federal
Land Banks and the Federal Home Loan Banks. Other U.S. Government Securities the
Funds may invest in are collateralized mortgage obligations ("CMOs").

The  value of U.S.  Government  Securities  will  fluctuate  until  they  mature
depending on prevailing  interest rates.  Because the yields on U.S.  Government
Securities are generally lower than on corporate debt securities, when the Funds
hold U.S.  Government  Securities each may attempt to increase the income it can
earn from them by  writing  covered  call  options  against  them,  when  market
conditions are  appropriate.  Writing  covered calls is explained  above,  under
"Hedging."

LOWER-GRADE  DEBT  SECURITIES.  Both  Funds  may  invest in  "lower-grade"  debt
securities  which generally offer higher income  potential than investment grade
securities.  "Lower-grade"  securities are those rated below "BBB" by Standard &
Poor's  Ratings  Group  ("Standard  &  Poor's")  or "Baa" by  Moody's  Investors
Services, Inc. ("Moody's") or similar ratings given by other domestic or foreign
rating    organizations,    or   securities    that   are   not   rated   by   a
nationally-recognized  rating  organization  but the  Manager  judges them to be
comparable  to  lower-rated  securities.  Disciplined  Allocation  Fund will not
purchase  securities  rated  below B by Moody's or  Standard & Poor's.  LifeSpan
Balanced Fund may purchase  securities rated as low as D by Standard & Poor's or
C by Moody's.  Disciplined  Allocation Fund may retain  securities whose ratings
fall  below B after  purchase  unless  and until  the  Manager  determines  that
disposing of such securities is in the Fund's best interest.

MORTGAGE-BACKED SECURITIES, CMOS AND REMICS. Certain mortgage-backed securities,
whether issued by the U.S.  Government or by private issuers,  "pass-through" to
investors the interest and principal  payments  generated by a pool of mortgages
assembled  for  sale  by  government  agencies.   Pass-through   mortgage-backed
securities  entail the risk that  principal may be repaid at any time because of
prepayments on the underlying  mortgages.  As a result,  these securities may be
subject to greater  price and yield  volatility  than  traditional  fixed-income
securities that have a fixed maturity and interest rate.

Both Funds may invest in collateralized  mortgage  obligations  ("CMOs"),  which
generally are obligations  fully  collateralized  by a portfolio of mortgages or
mortgage-related securities. LifeSpan

                                     -29-

<PAGE>



Balanced  Fund may also  invest  in real  estate  mortgage  investment  conduits
(REMICS)but does not intend to acquire "residual" interests in them. Payments of
the interest and  principal  generated by the pool of mortgages  relating to the
CMOs and REMICS are passed  through to the holders as the payments are received.
CMOs and  REMICS are  issued  with a variety  of  classes  or series  which have
different  maturities.  Certain  CMOs and REMICS may be more  volatile  and less
liquid  than  other  types  of  mortgage-related  securities,   because  of  the
possibility  of the early  repayment  of  principal  due to  prepayments  on the
underlying  mortgage  loans.  Prepayments on fixed rate mortgage loans generally
increase during periods of falling interest rates and decrease during periods of
rising interest  rates.  If prepayments of mortgages  underlying a short-term or
intermediate-term  CMO occur more slowly than  anticipated,  the CMO effectively
may become a long-term security.  The prices of long-term  securities  generally
fluctuate more widely in response to changes in interest rates.

"STRIPPED"  SECURITIES.  Both Funds may also invest in CMOs that are "stripped."
LifeSpan Balanced Fund may also invest in REMICS that are "stripped". That means
that the security is divided into two parts,  one of which  receives some or all
of the  principal  payments  (and is known as a  "principal-only"  security,  or
"P/O") and the other which receives some or all of the interest (and is known as
an "interest-only"  security, or "I/O"). P/Os and I/Os are generally referred to
as "derivative investments" discussed further above.

The yield to  maturity on the class that  receives  only  interest is  extremely
sensitive to the rate of payment of the principal on the  underlying  mortgages.
Principal  prepayments  increase that sensitivity.  Stripped securities that pay
"interest only" are therefore  subject to greater price volatility when interest
rates change, and they have the additional risk that if the underlying mortgages
are prepaid, a Fund will lose the anticipated cash flow from the interest on the
prepaid mortgages.  That risk is increased when general interest rates fall, and
in times of rapidly falling  interest rates, a Fund might receive back less than
its investment.  The value of "principal only" securities generally increases as
interest rates decline and prepayment  rates rise. The price of these securities
is  typically  more  volatile  than  that of  coupon-bearing  bonds  of the same
maturity.

Private-issuer   stripped   securities  are  generally  purchased  and  sold  by
institutional   investors   through   investment   banking  firms.  At  present,
established  trading  markets  have  not yet  developed  for  these  securities.
Therefore,  most private-issuer stripped securities may be deemed "illiquid." If
the Fund  holds  illiquid  stripped  securities,  the amount it can hold will be
subject  to the  Fund's  investment  policy  limiting  investments  in  illiquid
securities described in "Illiquid and Restricted Securities" above.

                                     -30-

<PAGE>




ASSET-BACKED  SECURITIES.  Both Funds may invest in  "asset-backed"  securities.
These   represent   interests  in  pools  of  consumer  loans  and  other  trade
receivables,  similar to mortgage-backed  securities.  They are issued by trusts
and "special purpose corporations." They are backed by a pool of assets, such as
credit card or auto loan  receivables,  which are the obligations of a number of
different  parties.  The income from the  underlying  pool is passed  through to
holders,  such  as a  Fund.  These  securities  may  be  supported  by a  credit
enhancement,  such as a letter of credit,  a guarantee  or a  preference  right.
However,  the extent of the credit  enhancement  may be different  for different
securities  and generally  applies to only a fraction of the  security's  value.
These securities present special risks. For example,  in the case of credit card
receivables,  the issuer of the  security  may have no security  interest in the
related collateral.

INVERSE  FLOATING RATE  INSTRUMENTS.  Both Funds may invest in inverse  floating
rate debt instruments ("inverse floaters"), including leveraged inverse floaters
and inverse floating rate mortgage-backed  securities,  such as inverse floating
rate "interest only" stripped mortgage-backed  securities.  The interest rate on
inverse  floaters  resets in the  opposite  direction  from the  market  rate of
interest to which the  inverse  floater is  indexed.  An inverse  floater may be
considered  to be  leveraged  to the extent that its  interest  rate varies by a
magnitude  that  exceeds  the  magnitude  of the  change  in the  index  rate of
interest.  The  higher  degree of  leverage  inherent  in  inverse  floaters  is
associated with greater volatility in their market values.

STRUCTURED  NOTES.  Both Funds may invest in structured notes. A structured note
is a debt security  having an interest rate or principal  repayment  requirement
based on the performance of a benchmark  asset or market,  such as stock prices,
currency  exchange  rates or  commodity  prices.  They  provide  exposure to the
benchmark  market  while fixing the maximum loss if that market does not perform
as expected. Depending on the terms of the note, a Fund could forego all or part
of the interest and principal that would be payable on a comparable conventional
note, and the Fund's loss could not exceed that amount.

SHORT-TERM  DEBT  SECURITIES.  Under normal  market  conditions,  both Funds may
invest in short-term debt securities,  such as money market instruments and U.S.
Government securities. When the Manager believes it is appropriate (for example,
for temporary defensive purposes during unstable market conditions),  a Fund can
hold cash or  invest  without  limit in money  market  instruments.  A Fund will
invest  in  high  quality,  short-term  money  market  instruments  such as U.S.
Treasury  and  agency  obligations;  commercial  paper  (short-term,  unsecured,
negotiable promissory

                                     -31-

<PAGE>



notes  of a  domestic  or  foreign  company);  short-term  debt  obligations  of
corporate  issuers;  and certificates of deposit and bankers'  acceptances (time
drafts  drawn on  commercial  banks  usually in  connection  with  international
transactions) of domestic or foreign banks and savings and loan associations.  A
Fund will purchase money market  instruments  denominated in a foreign  currency
only within the limitations described under "Foreign Securities." The issuers of
foreign money market instruments  purchased by Disciplined  Allocation Fund must
have at least $1 billion (U.S.)
of assets.

EURODOLLAR  AND  YANKEE  DOLLAR  BANK  OBLIGATIONS.  Both  Funds  may  invest in
obligations  of  foreign  branches  of U.S.  banks  (referred  to as  Eurodollar
obligations) and U.S.  branches of foreign banks (referred to as Yankee Dollars)
as well as foreign  branches of foreign banks.  These  investments  entail risks
that are different from investment in securities of U.S. banks.

SMALL, UNSEASONED COMPANIES.  LifeSpan Balanced Fund may invest in securities of
small,  unseasoned  companies.  These are companies  that have been in operation
less than three years, including the operations of any predecessors.  Securities
of these  companies  may have limited  liquidity  (which means that the Fund may
have  difficulty  selling them at an acceptable  price when it wants to) and the
price of these securities may be volatile.

INVESTMENT RESTRICTIONS

LifeSpan Balanced Fund and Disciplined  Allocation Fund have certain  investment
restrictions that,  together with their investment  objectives,  are fundamental
policies,  changeable only by shareholder approval. Set forth below is a summary
of the  investment  restrictions  which  are  different  for  each  Fund.  Other
investment  restrictions for each Fund are  substantially  the same.  Unless the
Prospectus  of the Fund  states  that a  percentage  restriction  applies  on an
ongoing basis, it applies only at the time that Fund makes an investment and the
Fund need not sell securities to meet the percentage  limits if the value of the
investment increases in proportion to the size of the Fund.

DISCIPLINED ALLOCATION FUND - INVESTMENT RESTRICTIONS.  The Fund
cannot do the following:

     1.(a)  Invest more than 5 % of its total  assets  (taken at market value at
the  time of each  investment)  in the  securities  (other  than  United  States
Government  or  Government  agency  securities)  of any  one  issuer  (including
repurchase  agreements  with any one bank or  dealer)  or more  than 15 % of its
total assets in the  obligations  of any one bank;  and (b)  purchase  more than
either (i) 10 % in principal  amount of the  outstanding  debt  securities of an
issuer, or (ii) 10 % of the outstanding voting securities of an issuer,

                                     -32-

<PAGE>



except that such restrictions shall not apply to securities issued or guaranteed
by the United States Government or its agencies,  bank money instruments or bank
repurchase agreements.

     2.  Alone,  or  together  with any  other  portfolio  or  portfolios,  make
investments  for the purpose of exercising  control over, or management  of, any
issuer. The Fund has undertaken as a matter of  non-fundamental  policy to apply
this restriction to 25% or more of its total assets.


     3. Purchase securities of other investment companies,  except in connection
with a merger, consolidation,  acquisition or reorganization,  or by purchase in
the open  market of  securities  of  closed-end  investment  companies  where no
underwriter or dealer's commission or profit,  other than the customary broker's
commission is involved and only if immediately  thereafter not more than 10 % of
the Fund's  total  assets,  taken at market  value,  would be  invested  in such
securities.

     4. Purchase or sell  interests in oil, gas or other mineral  exploration or
development  programs,  commodities,  commodity contracts or real estate, except
that such portfolio may: (1) purchase securities of issuers which invest or deal
an any of the above and (2) invest for hedging purposes in futures  contracts on
securities,  financial  instruments and indices,  and foreign  currency,  as are
approved for trading on a registered exchange.

     5. Borrow  amounts in excess of 10 % of its total  assets,  taken at market
value at the time of the  borrowing,  and then  only from  banks as a  temporary
measure  for  extraordinary  or  emergency  purposes,  or  make  investments  in
portfolio  securities while such outstanding  borrowings exceed 5 % of its total
assets.

     6. Allow its  current  obligations  under  reverse  repurchase  agreements,
together with  borrowings,  to exceed 1/3 of the value of its total assets (less
all its  liabilities  other  than  the  obligations  under  borrowings  and such
agreements).

     7. Mortgage, pledge, hypothecate or in any manner transfer, as security for
indebtedness,  any  securities  owned  or  held  by the  Fund  except  as may be
necessary in connection with  borrowings as mentioned in investment  restriction
(5) above, and then such mortgaging, pledging or hypothecating may not exceed 10
% of the Fund's  total  assets,  taken at market value at the time  thereof.  In
order to comply with certain state  statutes,  the Fund will not, as a matter of
operating policy,  mortgage,  pledge or hypothecate its portfolio  securities to
the extent that at any time the  percentage  of the value of pledged  securities
plus the maximum sales charge will exceed 10 % of the value of the Fund's shares
at the maximum offering price. The deposit of cash, cash equivalents and liquid

                                     -33-

<PAGE>



debt securities in a segregated  account with the custodian and/or with a broker
in connection  with futures  contracts or related options  transactions  and the
purchase of securities on a "when- issued" basis is not deemed to be a pledge.

     8. Write, purchase or sell puts, calls or combinations thereof, except that
covered call options may be written.

     9. Invest in  securities of foreign  issuers if at the time of  acquisition
more than 10 % of its  total  assets,  taken at market  value at the time of the
investment,  would be invested in such  securities.  However,  up to 25 % of the
total  assets  of  such  portfolio  may be  invested  in the  aggregate  in such
securities  (i)  issued,  assumed  or  guaranteed  by  foreign  governments,  or
political subdivisions or instrumentalities  thereof, (ii) assumed or guaranteed
by domestic issuers,  including Eurodollar securities,  or (iii) issued, assumed
or guaranteed by foreign issuers having a class of securities listed for trading
on the New York Stock Exchange.

     10. Invest more than 10 % in the aggregate of the value of its total assets
in  repurchase  agreements  maturing  in more than  seven  days,  time  deposits
maturing in more than 2 days,  portfolio  securities  which do not have  readily
available market quotations and all other illiquid assets.

LIFESPAN  BALANCED  FUND -  INVESTMENT  RESTRICTIONS.  The  Fund  cannot  do the
following:

     1. Borrow money,  except for emergency or extraordinary  purposes including
(i) from banks for  temporary  or  short-term  purposes or for the  clearance of
transactions  in amounts not to exceed 33 1/3% of the value of the Fund's  total
assets (including the amount borrowed) taken at market value, (ii) in connection
with the redemption of Fund shares or to finance failed settlements of portfolio
trades without immediately liquidating portfolio securities or other assets; and
(iii) in order to fulfill commitments or plans to purchase additional securities
pending the anticipated sale of other portfolio  securities or assets,  but only
if after each such borrowing there is asset coverage of at least 300% as defined
in the  Investment  Company Act. For  purposes of this  investment  restriction,
reverse  repurchase  agreements,  mortgage  dollar rolls,  short sales,  futures
contracts,  options on futures  contracts,  securities  or indices  and  forward
commitment transactions shall not constitute borrowing.

     2.  Purchase  or sell real  estate  except that the Fund may (i) acquire or
lease office space for its own use,  (ii) invest in  securities  of issuers that
invest in real estate or interests therein,  (iii) invest in securities that are
secured  by  real  estate  or  interests   therein,   (iv)   purchase  and  sell
mortgage-related

                                     -34-

<PAGE>



securities and (v) hold and sell real estate acquired by the Fund as a result of
the ownership of securities.

     3. Invest in commodities,  except the Fund may purchase and sell options on
securities,  securities  indices and currency,  futures contracts on securities,
securities  indices and currency and options on such  futures,  forward  foreign
currency exchange contracts,  forward commitments,  securities index put or call
warrants and repurchase  agreements  entered into in accordance  with the Fund's
investment policies.

     4. With respect to 75% of total  assets,  purchase  securities of an issuer
(other  than  the  U.S.   Government,   its   agencies,   instrumentalities   or
authorities), if:

     (a) such purchase would cause more than 5% of the Fund's total assets taken
at market value to be invested in the securities of such issuer; or

     (b)  such  purchase  would  at the  time  result  in more  than  10% of the
outstanding voting securities of such issuer being held by the Fund.

DESCRIPTION OF BROKERAGE PRACTICES

The  brokerage  practices  of the Funds are the same.  One of the  duties of the
Manager  under each  Investment  Advisory  Agreement is to arrange the portfolio
transactions  for  each  Fund.  Each  Investment   Advisory  Agreement  contains
provisions relating to the employment of broker-dealers  ("brokers") to effect a
Fund's  portfolio  transactions.  In doing so, the Manager is  authorized by the
Investment   Advisory  Agreement  to  employ  such   broker-dealers,   including
"affiliated"  brokers, as that term is defined in the Investment Company Act, as
may, in its best judgment based on all relevant factors, implement the policy of
a Fund to obtain,  at  reasonable  expense,  the "best  execution"  (prompt  and
reliable execution at the most favorable price obtainable) of such transactions.
The Manager need not seek  competitive  commission  bidding,  but is expected to
minimize the  commissions  paid to the extent  consistent  with the interest and
policies of a Fund as established by its Board of Directors.

Under each Investment  Advisory  Agreement,  the Manager is authorized to select
brokers that provide  brokerage  and/or research  services for a Fund and/or the
other  accounts  over  which  the  Manager  or its  affiliates  have  investment
discretion.  The  commissions  paid to such  brokers may be higher than  another
qualified  broker would have charged,  if a good faith  determination is made by
the  Manager  and the  commission  is fair and  reasonable  in  relation  to the
services provided. Subject to the foregoing considerations, the Manager may also
consider sales of shares of a Fund and other investment companies managed by the
Manager or its affiliates as a factor in the selection of brokers for the Fund's
portfolio transactions.

                                     -35-

<PAGE>




Subject to the  provisions of each Fund's  Investment  Advisory  Agreement,  the
procedures  and rules  described  above,  allocations of brokerage are generally
made by the  Manager's  portfolio  traders based upon  recommendations  from the
Manager's  portfolio  managers.  In certain  instances,  portfolio  managers may
directly place trades and allocate brokerage,  also subject to the provisions of
each Fund's Investment Advisory Agreement and the procedures and rules described
above.  In either  case,  brokerage is allocated  under the  supervision  of the
Manager's  executive officers and the Manager.  Transactions in securities other
than those for which an exchange is the primary  market are generally  done with
principals  or market  makers.  Brokerage  commissions  are paid  primarily  for
effecting  transactions in listed securities or for certain  fixed-income agency
transactions  in the secondary  market and are otherwise paid only if it appears
likely that a better price or execution can be obtained.

Please  refer to the  Statement  of  Additional  Information  for each  Fund for
further information on each Fund's brokerage practices.

EXPENSE RATIOS AND PERFORMANCE

The ratio of expenses to average  annual net assets for LifeSpan  Balanced  Fund
for the fiscal year ended  October 31, 1997 for its Class A, Class B and Class C
shares  was 1.42%,  2.18% and  2.16%,  respectively.  The ratio of  expenses  to
average annual net assets for  Disciplined  Allocation  Fund for the fiscal year
ended  October  31, 1997 for its Class A, Class B and Class C shares were 1.11%,
1.89%  and  1.92%,  respectively.  Further  details  are set forth  above  under
"Comparative  Fee Tables",  and in LifeSpan  Balanced Fund's Annual Report as of
October 31, 1997, and Disciplined  Allocation Fund's Annual Report as of October
31, 1997,  which are included in the  Statement of Additional  Information.  The
performance  of  Disciplined  Allocation  Fund for the 1,3,5 and 10 year  period
ended October 31, 1997 and the performance of the LifeSpan Balanced Fund for the
1 year and life-of-class as of October 31,1997 is set forth in Exhibit B.

SHAREHOLDER SERVICES

The policies of LifeSpan  Balanced  Fund and  Disciplined  Allocation  Fund with
respect  to  minimum  initial  investments  and  subsequent  investments  by its
shareholders  are  the  same.  Both  LifeSpan   Balanced  Fund  and  Disciplined
Allocation Fund offer the following privileges: (i) Right of Accumulation,  (ii)
Letter of Intent, (iii) reinvestment of dividends and distributions at net asset
value, (iv) net asset value purchases by certain  individuals and entities,  (v)
Asset Builder  (automatic  investment)  Plans,  (vi)  Automatic  Withdrawal  and
Exchange Plans for  shareholders  who own shares of the Fund valued at $5,000 or
more, (vii) AccountLink and PhoneLink

                                     -36-

<PAGE>



arrangements, (viii) exchanges of shares for shares of the same class of certain
other Funds at net asset  value,  and (ix)  telephone  redemption  and  exchange
privileges.

Shareholders  may purchase shares through  OppenheimerFunds  AccountLink,  which
links a shareholder account to an account at a bank or financial institution and
enables  shareholders  to send money  electronically  between those  accounts to
perform a number of types of account transactions. This includes the purchase of
shares through the automated telephone system (PhoneLink). Exchanges can also be
made  by  telephone,  or  automatically  through  PhoneLink.  After  AccountLink
privileges have been established with a bank account, shares may be purchased by
telephone  in an amount up to  $100,000.  Shares of either Fund may be exchanged
for shares of certain  Oppenheimer funds at net asset value per share;  however,
shares of a particular  class may be exchanged only for shares of the same class
of other Oppenheimer funds. Shareholders of the Funds may redeem their shares by
written  request  or by  telephone  request  in an amount up to  $50,000  in any
seven-day  period.  Shareholders may arrange to have share  redemption  proceeds
wired to a pre-designated  account at a U.S. bank or other financial institution
that  is an ACH  member,  through  AccountLink.  There  is no  dollar  limit  on
telephone  redemption  proceeds sent to a bank account when AccountLink has been
established.  Shareholders may also redeem shares  automatically by telephone by
using PhoneLink. Shareholders of both the Funds may also have the Transfer Agent
send redemption proceeds of $2,500 or more by Federal Funds wire to a designated
commercial  bank  which  is  a  member  of  the  Federal  Reserve  wire  system.
Shareholders of the Funds have up to six months to reinvest  redemption proceeds
of their Class A shares which they  purchase  subject to a sales charge or their
Class B shares on which they paid a contingent  deferred sales charge in Class A
shares of the Funds or other  Oppenheimer  funds without  paying a sales charge.
Both Funds may redeem  accounts  with less than 100  shares if the  account  has
fallen   below  such  stated   amount  for  reasons   other  than  market  value
fluctuations. Both Funds offer Automatic Withdrawal and Automatic Exchange Plans
under certain conditions.

RIGHTS OF SHAREHOLDERS

The shares of each Fund,  including shares of each class,  entitle the holder to
one vote per share on the  election  of  directors  of the Company and all other
matters submitted to shareholders of the Fund. Each share of the Fund represents
an  interest  in the Fund  proportionately  equal to the  interest of each other
share of the same  class and  entitle  the  holder to one vote per share  (and a
fractional  vote for a fractional  share) on matters  submitted to their vote at
shareholders'  meetings.  Shareholders  of each  Fund  vote  together  with  the
shareholders  of other series of the Company in the aggregate on certain matters
at shareholders' meetings, such as the election of Directors and ratification of
appointment of

                                     -37-

<PAGE>



auditors.  Shareholders  of a  particular  series or class  vote  separately  on
proposals  which affect that series or class,  and  shareholders  of a series or
class  which is not  affected  by that  matter are not  entitled  to vote on the
proposal.  For example,  only shareholders of a series,  such as the Funds, vote
exclusively on any material amendment to the Investment  Advisory Agreement with
respect to the series.  Only shareholders of a class of a series vote on certain
amendments to the  Distribution  and/or Service Plans if the  amendments  affect
only that class. The Board of the Company is authorized to create new series and
classes of series.  The Board may reclassify  unissued  shares of the Funds into
additional series or classes of shares. The Board may also divide or combine the
shares of a class  into a greater  or lesser  number of shares  without  thereby
changing the  proportionate  beneficial  interest of a shareholder in each Fund.
Shares do not have  cumulative  voting  rights  or  preemptive  or  subscription
rights.  Shares  may be voted in person or by proxy.  Each share has one vote at
shareholder meetings, with fractional shares voting proportionately. Shares of a
particular  class  vote  together  on  matters  that  affect  that  class.  Most
amendments  to the Articles of  Incorporation  governing  the Funds  require the
approval of a "majority" of the outstanding voting securities (as defined in the
Investment  Company Act) of the  Company's  shares  without  regard to series or
class.

Class A, Class B and Class C shares of LifeSpan  Balanced  Fund and the Class A,
Class B and  Class C  shares  of  Disciplined  Allocation  Fund  which  LifeSpan
Balanced  Fund  shareholders  will  receive  in the  Reorganization  participate
equally in the Funds' dividends and  distributions  and in the Funds' net assets
upon liquidation,  after taking into account the different expenses paid by each
class.  Distributions and dividends for each class will be different and Class B
and Class C dividends and distributions will be lower than Class A dividends.

It is not  contemplated  that the Company will hold regular  annual  meetings of
shareholders.  Under  the  Investment  Company  Act,  shareholders  of  LifeSpan
Balanced  Fund do not have rights of appraisal  as a result of the  transactions
contemplated by the Reorganization  Agreement.  However,  they have the right at
any time prior to the consummation of such transaction to redeem their shares at
net  asset  value,  less  any  applicable   contingent  deferred  sales  charge.
Shareholders of both of the Funds have the right,  under certain  circumstances,
to  remove  a  Director  and  will  be  assisted  in  communicating  with  other
shareholders for such purpose.

Each Fund is a series of the Company, which is a corporation organized under the
laws  of  the  state  of  Maryland.  As  a  general  matter,  shareholders  of a
corporation  will not be liable to the corporation or its creditors with respect
to their interests in the corporation as long as their shares have been paid for
and  the  requisite  corporate  formalities  have  been  observed,  both  in the
organization of the corporation and in the conduct of its business.

ORGANIZATION AND HISTORY

                                     -38-

<PAGE>



Oppenheimer  Series Fund, Inc. was organized in 1981 as a multi- series Maryland
corporation.  Both LifeSpan  Balanced Fund and  Disciplined  Allocation Fund are
series  of  that  Company.   Oppenheimer  Series  Fund,  Inc.  is  an  open-end,
diversified  management  investment  company.   Oppenheimer  Series  Fund,  Inc.
presently has five series, including the Funds. Oppenheimer Series Fund, Inc. is
governed by a Board of Directors.

MANAGEMENT AND DISTRIBUTION ARRANGEMENTS

The Manager,  located at Two World Trade Center,  New York, New York 10048-0203,
acts as the investment  adviser for both LifeSpan  Balanced Fund and Disciplined
Allocation Fund. The terms and conditions of the Investment  Advisory  Agreement
for each Fund are substantially the same. The monthly  management fee payable to
the Manager by each Fund is set forth under "Synopsis - Investment  Advisory and
Distribution  and Service  Plan Fees" along with the fees paid by the Manager to
the Subadvisers for LifeSpan  Balanced Fund. The 12b-1  Distribution and Service
Plan fees paid by each Fund with  respect to Class A, Class B and Class C shares
are set forth above under "Synopsis - Investment  Advisory and  Distribution and
Service Plan Fees."

Pursuant to each  Investment  Advisory  Agreement,  the Manager  supervises  the
investment operations of the Funds and the composition of their portfolios,  and
furnishes  advice and  recommendations  with respect to investments,  investment
policies and the  purchase  and sale of  securities.  Both  Investment  Advisory
Agreements require the Manager to provide LifeSpan Balanced Fund and Disciplined
Allocation  Fund with  adequate  office space,  facilities  and equipment and to
provide  and  supervise  the  activities  of  all  administrative  and  clerical
personnel required to provide effective  administration for the Funds, including
the compilation and maintenance of records with respect to their operations, the
preparation and filing of specified reports,  and composition of proxy materials
and registration statements for continuous public sale of shares of each Fund.

Babson-Stewart,  BEA and  Pilgrim  Baxter  each act as  Subadviser  to  LifeSpan
Balanced  Fund.  The   Subadvisers  are  responsible  for  choosing  the  Fund's
investments  and  their  duties  and  responsibilities  are set  forth  in their
agreements with the Manager.  The Manager,  not LifeSpan Balanced Fund, pays the
Subadvisers.  Babson-Stewart,  One  Memorial  Drive,  Cambridge,  MA 02142,  the
Subadviser to the international component, began managing equity assets in 1987.
The general  partners of Babson-  Stewart are David L. Babson & Co., which is an
indirect  subsidiary of Massachusetts  Mutual Life Insurance Company and Stewart
Ivory & Co. Ltd. It advises other mutual funds and institutional  clients.  BEA,
One Citicorp  Center,  153 East 53rd Street,  5th Floor, New York, NY 10022, the
Subadviser to the high yield/high risk

                                     -39-

<PAGE>



component, began providing management services to institutional clients in 1984.
BEA is a partnership  between Credit Suisse Capital  Corporation and CS Advisors
Corp. Pilgrim Baxter, 1255 Drummers Lane, Wayne, PA 19087, the Subadvisor to the
small  cap  component,  was  established  in  1982.  It  specializes  in  equity
management for  institutional  investors  including other investment  companies.
Pilgrim  Baxter  is  a  wholly-owned   subsidiary  of  United  Asset  Management
Corporation.

Expenses  not  expressly  assumed by the Manager  under each  Fund's  Investment
Advisory  Agreement  or  by  OppenheimerFunds  Distributor,   Inc.,  the  Funds'
distributor (the "Distributor"),  under the General Distributor's  Agreement are
paid by the Funds. The Investment  Advisory Agreements list examples of expenses
paid by the Funds,  the major  categories  of which relate to  interest,  taxes,
brokerage  commissions,  fees to certain  Directors,  legal and audit  expenses,
custodian and transfer agent expenses,  share issuance costs,  certain  printing
and registration costs and non-recurring  expenses,  including litigation costs.
The  management  fee paid by  LifeSpan  Balanced  Fund for the fiscal year ended
October 31, 1997 was $527,770.  For the fiscal year ended October 31, 1997,  the
management fee paid by Disciplined  Allocation Fund was  $1,535,343.  The Funds'
Investment Advisory Agreements contain no expense limitation.

The Manager is controlled by Oppenheimer  Acquisition  Corp., a holding  company
owned in part by senior  management of the Manager and ultimately  controlled by
Massachusetts  Mutual Life Insurance  Company,  a mutual life insurance  company
that also  advises  pension  plans and  investment  companies.  The  Manager has
operated  as an  investment  company  adviser  since  1959.  The Manager and its
affiliates  currently  advise  investment  companies  with  combined  net assets
aggregating over $75 billion as of December 31, 1997, with more than 3.5 million
shareholder accounts. OppenheimerFunds Services, a division of the Manager, acts
as transfer and  shareholder  servicing  agent on an at-cost  basis for LifeSpan
Balanced Fund and  Disciplined  Allocation  Fund and for certain other  open-end
Funds managed by the Manager and its affiliates.

The Distributor,  under a General Distributor's Agreement for each of the Funds,
acts as the principal  underwriter in the continuous public offering of Class A,
Class B and Class C shares of each Fund.  During LifeSpan Balanced Fund's fiscal
year ended October 31, 1997,  the  aggregate  sales charges on sales of LifeSpan
Balanced  Fund's Class A shares were $100,461,  of which the  Distributor and an
affiliated  broker-dealer  retained in the aggregate  $67,205.  During  LifeSpan
Balanced Fund's fiscal year ended October 31,1997,  no contingent deferred sales
charges were collected on LifeSpan  Balanced  Fund's Class B and Class C shares.
For the fiscal  year ended  October  31,  1997,  the  aggregate  amount of sales
charges on sales of Disciplined Allocation Fund's Class A shares was $468,073,

                                     -40-

<PAGE>



of  which   $456,768  was  retained  by  the   Distributor   and  an  affiliated
broker-dealer. Contingent deferred sales charges collected by the Distributor on
the  redemption  of Class B and Class C shares for the fiscal year ended October
31, 1997 totaled $14,973 and $0, respectively,  all of which was retained by the
Distributor.  For additional information about distribution of the Funds' shares
and the payments made by the Funds to the  Distributor  in connection  with such
activities,  please  refer to  "Distribution  and Service  Plans" in each Fund's
Statement of Addition Information.

PURCHASE OF ADDITIONAL SHARES

Class A shares of  LifeSpan  Balanced  Fund and  Class A shares  of  Disciplined
Allocation  Fund may be  purchased  with an  initial  sales  charge of 5.75% for
purchases  of less than  $25,000.  The  sales  charge  of 5.75% is  reduced  for
purchases of either  Fund's Class A shares of $25,000 or more.  For purchases of
$1 million or more  ($500,000 or more for purchases by  "Retirement  Plans",  as
defined  in each  Fund's  prospectus)  if those  shares are  redeemed  within 12
calendar months (18 months for shares purchased prior to May 1, 1997) of the end
of the calendar month of their purchase,  a contingent deferred sales charge may
be deducted from the redemption  proceeds.  Class B shares of LifeSpan  Balanced
Fund and  Disciplined  Allocation  Fund are sold at net asset  value  without an
initial  sales  charge,  however,  if Class B shares of either Fund are redeemed
within  six  years  of the  end of the  calendar  month  of  their  purchase,  a
contingent deferred sales charge may be deducted of up to 5%, depending upon how
long such shares had been held.  Class C shares of either Fund may be  purchased
without an initial sales charge,  but if sold within 12 months of buying them, a
contingent deferred sales charge of 1% may be deducted.

The initial sales charge and contingent deferred sales charge on Class A shares,
Class B shares  and  Class C shares  of  Disciplined  Allocation  Fund will only
affect  shareholders of LifeSpan Balanced Fund to the extent that they desire to
make additional  purchases of shares of Disciplined  Allocation Fund in addition
to the shares  which they will  receive as a result of the  Reorganization.  The
Class A,  Class B and  Class C shares  to be  issued  under  the  Reorganization
Agreement  will be issued by  Disciplined  Allocation  Fund at net asset  value.
Future dividends and capital gain distributions of Disciplined  Allocation Fund,
if any, may be reinvested  without sales charge.  The contingent  deferred sales
charge for each class of shares for both Funds is the same.  If Class A, Class B
or  Class C  shares  of  LifeSpan  Balanced  Fund  are  currently  subject  to a
contingent deferred sales change, the Disciplined  Allocation Fund shares issued
in the  Reorganization  will  continue  to be  subject  to the  same  contingent
deferred sales charge. Any LifeSpan Balanced Fund shareholder who is entitled to
a reduced sales charge on additional purchases by reason of a

                                     -41-

<PAGE>



Letter of Intent  or Right of  Accumulation  based  upon  holdings  of shares of
LifeSpan Balanced Fund will continue to be entitled to a reduced sales charge on
any future purchase of shares of Disciplined Allocation Fund.

DIVIDENDS AND DISTRIBUTIONS

LifeSpan  Balanced Fund declares  dividends from net investment  income and pays
such dividends to shareholders  quarterly.  LifeSpan Balanced Fund may also make
distributions  annually  in  December  out of any net  short-term  or  long-term
capital  gains.  Disciplined  Allocation  Fund  declares and pays  dividends and
capital gains  distributions,  if any, quarterly.  Dividends are paid separately
for each  class of shares  and  normally  the  dividends  on Class A shares  are
generally  expected to be higher than for Class B and Class C shares because the
expenses  allocable to Class B and Class C shares will  generally be higher than
for Class A shares.  There is no fixed  dividend  rate for either Fund and there
can be no assurance that either Fund will pay any dividends or distributions.

                   METHOD OF CARRYING OUT THE REORGANIZATION

The  consummation  of  the  transactions   contemplated  by  the  Reorganization
Agreement is  contingent  upon the receipt of an order from the  Securities  and
Exchange Commission  exempting the Funds from the provisions of Section 17(a) of
the  Investment   Company  Act,  the  approval  of  the  Reorganization  by  the
shareholders  of  LifeSpan  Balanced  Fund and the receipt of the  opinions  and
certificates set forth in Sections 10 and 11 of the Reorganization Agreement and
the  occurrence  of  the  events   described  in  those   Sections.   Under  the
Reorganization  Agreement,  all the assets of LifeSpan Balanced Fund,  excluding
the Cash Reserve,  will be delivered to Disciplined  Allocation Fund in exchange
for Class A, Class B and Class C shares of Disciplined Allocation Fund. The Cash
Reserve  to be  retained  by  LifeSpan  Balanced  Fund will be an amount  deemed
sufficient in the  discretion of the Board for the payment of LifeSpan  Balanced
Fund's liabilities, and LifeSpan Balanced Fund's expenses of liquidation.

Assuming the shareholders of LifeSpan Balanced Fund approve the  Reorganization,
the actual  exchange of assets is expected to take place on June 12, 1998, or as
soon thereafter as is practicable (the "Closing Date") on the basis of net asset
values as of the close of business on the  business  day  preceding  the Closing
Date (the "Valuation Date"). Under the Reorganization Agreement, all redemptions
of shares of LifeSpan Balanced Fund shall be permanently  suspended at the close
of business on the Valuation Date; only redemption  requests  received in proper
form on or prior to the close of business on that date shall be fulfilled by it;
redemption  requests  received by LifeSpan Balanced Fund after that date will be
treated as  requests  for  redemptions  of Class A, Class B or Class C shares of
Disciplined Allocation Fund to be

                                     -42-

<PAGE>



distributed to the shareholders  requesting  redemption.  The exchange of assets
for  shares  will be done on the basis of the per  share net asset  value of the
Class A,  Class B and Class C shares of  Disciplined  Allocation  Fund,  and the
value of the assets of LifeSpan  Balanced Fund to be transferred as of the close
of  business on the  Valuation  Date,  valued in the manner used by  Disciplined
Allocation Fund in the valuation of assets.  Disciplined  Allocation Fund is not
assuming any of the liabilities of LifeSpan  Balanced Fund, except for portfolio
securities  purchased  which  have  not  settled  and  outstanding   shareholder
redemption and dividend checks.

The net asset value of the shares transferred by Disciplined  Allocation Fund to
LifeSpan  Balanced Fund will be the same as the value of the assets  received by
Disciplined  Allocation Fund. For example,  if, on the Valuation Date,  LifeSpan
Balanced Fund were to have securities with a market value of $95,000 and cash in
the amount of $10,000  (of which  $5,000  was to be  retained  by it as the Cash
Reserve),  the value of the assets  which would be  transferred  to  Disciplined
Allocation  Fund  would  be  $100,000.  If the net  asset  value  per  share  of
Disciplined  Allocation  Fund were $10 per share at the close of business on the
Valuation  Date,  the number of shares to be issued would be 10,000  ($100,000 /
$10). These 10,000 shares of Disciplined Allocation Fund would be distributed to
the former  shareholders  of LifeSpan  Balanced Fund.  This example is given for
illustration  purposes  only and does not bear any  relationship  to the  dollar
amounts or shares expected to be involved in the Reorganization.

Following the Closing Date, LifeSpan Balanced Fund will distribute on a pro rata
basis to its  shareholders  of record on the Valuation Date the Class A, Class B
and Class C shares of Disciplined  Allocation Fund received by LifeSpan Balanced
Fund at the  Closing,  in  liquidation  of the  outstanding  shares of  LifeSpan
Balanced  Fund,  and the  outstanding  shares of LifeSpan  Balanced Fund will be
canceled.  To assist LifeSpan  Balanced Fund in this  distribution,  Disciplined
Allocation Fund will, in accordance with a shareholder list supplied by LifeSpan
Balanced  Fund,  cause its transfer  agent to credit and confirm an  appropriate
number of shares of Disciplined  Allocation Fund to each shareholder of LifeSpan
Balanced Fund.  Certificates  for Class A shares of Disciplined  Allocation Fund
will be issued upon written request of a former shareholder of LifeSpan Balanced
Fund but only for whole shares with  fractional  shares  credited to the name of
the  shareholder on the books of Disciplined  Allocation Fund and only if shares
represented  by  certificates  are  delivered for  cancellation.  Former Class A
shareholders of LifeSpan Balanced Fund who wish certificates  representing their
shares  of   Disciplined   Allocation   Fund  must,   after   receipt  of  their
confirmations,  make a written request to  OppenheimerFunds  Services,  P.O. Box
5270, Denver, Colorado 80217. Shareholders of LifeSpan Balanced Fund holding

                                     -43-

<PAGE>



certificates  representing  their shares will not be required to surrender their
certificates  to  anyone  in  connection  with  the  Reorganization.  After  the
Reorganization, however, it will be necessary for such shareholders to surrender
such certificates in order to redeem, transfer, pledge or exchange any shares of
Disciplined Allocation Fund.

Under the  Reorganization  Agreement,  within one year after the  Closing  Date,
LifeSpan  Balanced Fund shall:  (a) either pay or make  provision for all of its
debts and taxes;  and (b) either (i) transfer any  remaining  amount of the Cash
Reserve to Disciplined Allocation Fund, if such remaining amount is not material
(as defined below) or (ii) distribute such remaining  amount to the shareholders
of LifeSpan  Balanced Fund who were such on the Valuation  Date.  Such remaining
amount  shall be deemed to be  material if the amount to be  distributed,  after
deducting the estimated expenses of the distribution, equals or exceeds one cent
per share of the number of  LifeSpan  Balanced  Fund shares  outstanding  on the
Valuation Date.  Within one year after the Closing Date,  LifeSpan Balanced Fund
will complete its liquidation.

The obligations of either LifeSpan Balanced Fund or Disciplined  Allocation Fund
under the Agreement shall be subject to obtaining the necessary  relief from the
Securities  and Exchange  Commission  and to the right of either Fund to abandon
and terminate the Reorganization  Agreement for any reason and without liability
provided,  however,  that  if a Fund  should  terminate  the  Agreement  without
reasonable cause, the terminating Fund shall,  upon demand,  reimburse the other
Fund for all  expenses,  including  reasonable  out-of-pocket  expenses and fees
incurred in connection with the Agreement.

In the  event  that the  Reorganization  Agreement  is not  consummated  for any
reason,  the  Board  will  consider  and may  submit to the  shareholders  other
alternatives.

                            ADDITIONAL INFORMATION

FINANCIAL INFORMATION

The Reorganization  will be accounted for by the surviving Fund in its financial
statements  similar  to  a  pooling  without   restatement.   Further  financial
information as to LifeSpan Balanced Fund is contained in its current Prospectus,
which is available without charge from OppenheimerFunds  Services,  the Transfer
Agent,  P.O. Box 5270,  Denver,  Colorado 80217,  and is incorporated  herein by
reference,  and in its Annual Report as of October 31, 1997,  which are included
in  its  Statement  of  Additional   Information.   Financial   information  for
Disciplined Allocation Fund is contained in its current Prospectus  accompanying
this Proxy Statement and Prospectus and incorporated herein by reference, and in
its Annual Report as

                                     -44-

<PAGE>



of  October  31,  1997  which  is  included  in  its   Statement  of  Additional
Information.

PUBLIC INFORMATION

Additional  information about LifeSpan Balanced Fund and Disciplined  Allocation
Fund  is  available,  as  applicable,  in  the  following  documents  which  are
incorporated herein by reference:  (i) Disciplined  Allocation Fund's Prospectus
dated  February 19, 1998,  accompanying  this Proxy  Statement and  incorporated
herein;  (ii) LifeSpan  Balanced Fund's  Prospectus dated February  19,1998,  as
supplemented February 24,1998 which may be obtained without charge by writing to
OppenheimerFunds   Services,  P.O.  Box  5270,  Denver,  Colorado  80217;  (iii)
Disciplined Allocation Fund's Annual Report as of October 31, 1997, which may be
obtained without charge by writing to  OppenheimerFunds  Services at the address
indicated above;  and (iv) LifeSpan  Balanced Fund's Annual Report as of October
31, 1997,  which may be obtained  without charge by writing to  OppenheimerFunds
Services at the address  indicated above. All of the foregoing  documents may be
obtained by calling the  toll-free  number on the cover of this Proxy  Statement
and Prospectus.

Additional information about the following matters is contained in the Statement
of Additional Information relating to this Reorganization, which incorporates by
reference the Disciplined  Allocation  Fund Statement of Additional  Information
dated February 19, 1998, and LifeSpan  Balanced Fund's Prospectus dated February
19,  1998,  as  supplemented  February  24,  1998 and  Statement  of  Additional
Information   dated  February  19,  1998;  the  organization  and  operation  of
Disciplined  Allocation  Fund and LifeSpan  Balanced Fund;  more  information on
investment policies,  practices and risks; information about the Company's Board
and its  responsibilities;  a further  description  of the services  provided by
Disciplined Allocation Fund's and LifeSpan Balanced Fund's Manager, Distributor,
and transfer and shareholder servicing agent; dividend policies; tax matters; an
explanation of the method of determining the offering price of the shares and/or
contingent deferred sales charges, as applicable of Class A, Class B and Class C
shares of Disciplined  Allocation  Fund and LifeSpan  Balanced  Fund;  purchase,
redemption and exchange  programs;  the different expenses paid by each class of
shares; and distribution arrangements.

The Company on behalf of Disciplined  Allocation Fund and LifeSpan Balanced Fund
is subject to the informational  requirements of the Securities  Exchange Act of
1934,  as  amended,  and  in  accordance  therewith,   file  reports  and  other
information with the SEC. Proxy material,  reports and other  information  about
LifeSpan  Balanced  Fund and  Disciplined  Allocation  Fund  which are of public
record can be inspected and copied at public reference facilities  maintained by
the SEC in Washington,  D.C. and certain of its regional offices,  and copies of
such materials can be obtained at prescribed

                                     -45-

<PAGE>



rates  from  the  Public  Reference  Branch,  Office  of  Consumer  Affairs  and
Information Services, SEC, Washington, D.C. 20549.

                                OTHER BUSINESS

Management of LifeSpan Balanced Fund knows of no business other than the matters
specified above which will be presented at the Meeting.  Since matters not known
at the time of the  solicitation  may come  before  the  Meeting,  the  proxy as
solicited  confers  discretionary  authority  with  respect  to such  matters as
properly come before the Meeting,  including  any  adjournment  or  adjournments
thereof,  and it is the intention of the persons named as  attorneys-in-fact  in
the proxy to vote this proxy in accordance with their judgment on such matters.


By Order of the Board of Directors


Andrew J. Donohue, Secretary


April 6, 1998                                                              315



                                     -46-

<PAGE>



                                   EXHIBIT A

                     AGREEMENT AND PLAN OF REORGANIZATION


      AGREEMENT  AND  PLAN  OF  REORGANIZATION  (the  "Agreement")  dated  as of
___________ by and between Oppenheimer Series Fund, Inc., a Maryland corporation
(the  "Company"),  on  behalf  of  its  series,  Oppenheimer  LifeSpan  Balanced
Fund("LifeSpan  Balanced  Fund"),and  Oppenheimer  Disciplined  Allocation  Fund
("Disciplined Allocation
Fund").

                             W I T N E S S E T H:

     WHEREAS, the parties are each a series of an open-end investment company of
the management type; and

      WHEREAS,  the  parties  hereto  desire to provide  for the  reorganization
pursuant to Section  368(a)(1) of the Internal  Revenue Code of 1986, as amended
(the "Code"),  of LifeSpan  Balanced Fund through the acquisition by Disciplined
Allocation Fund of substantially  all of the assets of LifeSpan Balanced Fund in
exchange for the voting  shares of  beneficial  interest  ("shares") of Class A,
Class B and Class C shares of Disciplined  Allocation Fund and the assumption by
Disciplined  Allocation Fund of certain  liabilities of LifeSpan  Balanced Fund,
which Class A, Class B and Class C shares of Disciplined  Allocation Fund are to
be  distributed  by  LifeSpan  Balanced  Fund  pro rata to its  shareholders  in
complete liquidation of LifeSpan Balanced Fund and complete  cancellation of its
shares;

      NOW, THEREFORE,  in consideration of the mutual promises herein contained,
the parties hereto agree as follows:

      1.  The  parties   hereto   hereby  adopt  this   Agreement  and  Plan  of
Reorganization  (the  "Agreement")  pursuant to Section 368(a)(1) of the Code as
follows:  The reorganization will be comprised of the acquisition by Disciplined
Allocation  Fund of  substantially  all of the properties and assets of LifeSpan
Balanced Fund in exchange for Class A, Class B and Class C shares of Disciplined
Allocation  Fund and the  assumption by Disciplined  Allocation  Fund of certain
liabilities of LifeSpan  Balanced  Fund,  followed by the  distribution  of such
Class A, Class B and Class C shares of Disciplined Allocation Fund shares to the
Class A, Class B and Class C shareholders of LifeSpan  Balanced Fund in exchange
for their Class A, Class B and Class C shares of  LifeSpan  Balanced  Fund,  all
upon and subject to the terms of the Agreement hereinafter set forth.

            The  share  transfer  books  of  LifeSpan   Balanced  Fund  will  be
permanently  closed  at  the  close  of  business  on  the  Valuation  Date  (as
hereinafter defined) and only redemption requests received

                                     A-1

<PAGE>



in proper form on or prior to the close of business on the Valuation  Date shall
be fulfilled by LifeSpan Balanced Fund; redemption requests received by LifeSpan
Balanced Fund after that date shall be treated as requests for the redemption of
the shares of Disciplined  Allocation  Fund to be distributed to the shareholder
in question as provided in Section 5.

      2. On the  Closing  Date (as  hereinafter  defined),  all of the assets of
LifeSpan  Balanced  Fund on that  date,  excluding  a cash  reserve  (the  "Cash
Reserve") to be retained by LifeSpan  Balanced Fund sufficient in its discretion
for the payment of the expenses of LifeSpan Balanced Fund's  dissolution and its
liabilities,  but not in excess of the amount contemplated by Section 10E, shall
be  delivered  as  provided  in Section 8 to  Disciplined  Allocation  Fund,  in
exchange for and against delivery to LifeSpan  Balanced Fund on the Closing Date
of a number of Class A,  Class B and Class C shares  of  Disciplined  Allocation
Fund,  having an  aggregate  net asset value equal to the value of the assets of
LifeSpan Balanced Fund so transferred and delivered.

      3.  The net  asset  value  of  Class  A,  Class B and  Class C  shares  of
Disciplined  Allocation  Fund and the value of the assets of  LifeSpan  Balanced
Fund to be  transferred  shall in each  case be  determined  as of the  close of
business of the New York Stock Exchange on the Valuation  Date. The  computation
of the net asset value of the Class A, Class B and Class C shares of Disciplined
Allocation Fund and the Class A, Class B and Class C shares of LifeSpan Balanced
Fund  shall  be done in the  manner  used by  Disciplined  Allocation  Fund  and
LifeSpan Balanced Fund, respectively, in the computation of such net asset value
per share as set forth in their  respective  prospectuses.  The methods  used by
Disciplined  Allocation  Fund  in  such  computation  shall  be  applied  to the
valuation  of  the  assets  of  LifeSpan  Balanced  Fund  to be  transferred  to
Disciplined Allocation Fund.

            LifeSpan  Balanced Fund shall declare and pay,  immediately prior to
the Valuation  Date, a dividend or dividends  which,  together with all previous
such  dividends,  shall have the effect of  distributing  to  LifeSpan  Balanced
Fund's  shareholders all of LifeSpan Balanced Fund's investment  company taxable
income  for  taxable  years  ending on or prior to the  Closing  Date  (computed
without  regard to any dividends  paid) and all of its net capital gain, if any,
realized  in  taxable  years  ending  on or prior  to the  Closing  Date  (after
reduction for any capital loss carry-forward).

      4.   The   closing   (the   "Closing")   shall  be  at  the   offices   of
OppenheimerFunds,  Inc. (the "Agent"),  Two World Trade Center,  34th Floor, New
York,  New York  10048,  at 4:00 P.M.  New York time on June  12,1998 or at such
other time or place as the  parties  may  designate  or as  provided  below (the
"Closing  Date").  The business day  preceding  the Closing Date is  hereinafter
referred to as the

                                     A-2

<PAGE>



"Valuation Date."

            In the event that on the Valuation  Date either party has,  pursuant
to the  Investment  Company Act of 1940,  as amended (the  "Act"),  or any rule,
regulation  or order  thereunder,  suspended  the  redemption  of its  shares or
postponed payment therefore, the Closing Date shall be postponed until the first
business  day after the date when both parties  have ceased such  suspension  or
postponement;  provided,  however,  that if such suspension shall continue for a
period  of 60 days  beyond  the  Valuation  Date,  then the  other  party to the
Agreement  shall be permitted to terminate  the Agreement  without  liability to
either party for such termination.

      5.  In  conjunction  with  the  Closing,   LifeSpan  Balanced  Fund  shall
distribute on a pro rata basis to the shareholders of LifeSpan  Balanced Fund on
the  Valuation  Date the  Class A,  Class B and  Class C shares  of  Disciplined
Allocation  Fund  received by  LifeSpan  Balanced  Fund on the  Closing  Date in
exchange for the assets of LifeSpan  Balanced  Fund in complete  liquidation  of
LifeSpan Balanced Fund; for the purpose of the distribution by LifeSpan Balanced
Fund of Class A, Class B and Class C shares of  Disciplined  Allocation  Fund to
its shareholders,  Disciplined  Allocation Fund will promptly cause its transfer
agent to:  (a)  credit  an  appropriate  number of Class A,  Class B and Class C
shares of Disciplined  Allocation  Fund on the books of  Disciplined  Allocation
Fund to each Class A, Class B and Class C shareholder,  respectively of LifeSpan
Balanced  Fund  in  accordance  with  a list  (the  "Shareholder  List")  of its
shareholders   received  from  LifeSpan   Balanced  Fund;  and  (b)  confirm  an
appropriate  number  of  Class A,  Class B and  Class C  shares  of  Disciplined
Allocation Fund to each shareholder of LifeSpan Balanced Fund;  certificates for
Class A,  Class B and  Class C shares  of  Disciplined  Allocation  Fund will be
issued upon written  request of a former  shareholder of LifeSpan  Balanced Fund
but only for whole shares,  with  fractional  shares credited to the name of the
shareholder on the books of Disciplined Allocation Fund.

            The Shareholder List shall indicate,  as of the close of business on
the  Valuation  Date,  the name and  address  of each  shareholder  of  LifeSpan
Balanced  Fund,  indicating  his or her share  balance.  LifeSpan  Balanced Fund
agrees to supply the Shareholder  List to Disciplined  Allocation Fund not later
than  the  Closing  Date.   Shareholders  of  LifeSpan   Balanced  Fund  holding
certificates  representing their shares shall not be required to surrender their
certificates to anyone in connection with the reorganization.  After the Closing
Date,  however,  it will be necessary for such  shareholders  to surrender their
certificates  in order to redeem,  transfer or pledge the shares of  Disciplined
Allocation Fund which they received.


                                     A-3

<PAGE>



      6. Within one year after the Closing  Date,  LifeSpan  Balanced Fund shall
(a) either pay or make  provision  for  payment  of all of its  liabilities  and
taxes,  and (b) either (i) transfer any remaining  amount of the Cash Reserve to
Disciplined  Allocation  Fund,  if such  remaining  amount  (as  reduced  by the
estimated cost of distributing it to  shareholders)  is not material (as defined
below) or (ii) distribute such remaining  amount to the shareholders of LifeSpan
Balanced Fund on the Valuation Date. Such remaining amount shall be deemed to be
material  if the amount to be  distributed,  after  deduction  of the  estimated
expenses of the  distribution,  equals or exceeds one cent per share of LifeSpan
Balanced Fund outstanding on the Valuation Date.

      7. Prior to the  Closing  Date,  there shall be  coordination  between the
parties  as  to  their  respective   portfolios  so  that,  after  the  Closing,
Disciplined  Allocation  Fund will be in compliance  with all of its  investment
policies and  restrictions.  Promptly after the Closing,  LifeSpan Balanced Fund
shall deliver to Disciplined  Allocation Fund two copies of a list setting forth
the securities then owned by LifeSpan Balanced Fund. Promptly after the Closing,
LifeSpan Balanced Fund shall provide Disciplined  Allocation Fund a list setting
forth the respective federal income tax bases thereof.

      8.  Portfolio  securities or written  evidence  acceptable to  Disciplined
Allocation Fund of record  ownership  thereof by The Depository Trust Company or
through the Federal Reserve Book Entry System or any other  depository  approved
by LifeSpan  Balanced  Fund  pursuant to Rule 17f-4 and Rule 17f-5 under the Act
shall be endorsed and  delivered,  or  transferred  by  appropriate  transfer or
assignment  documents,  by  LifeSpan  Balanced  Fund  on  the  Closing  Date  to
Disciplined  Allocation  Fund, or at its  direction,  to its custodian  bank, in
proper form for  transfer  in such  condition  as to  constitute  good  delivery
thereof in accordance with the custom of brokers and shall be accompanied by all
necessary state transfer stamps, if any. The cash delivered shall be in the form
of certified or bank  cashiers'  checks or by bank wire or  intra-bank  transfer
payable  to the  order  of  Disciplined  Allocation  Fund  for  the  account  of
Disciplined  Allocation Fund. Shares of Disciplined Allocation Fund representing
the number of shares of Disciplined  Allocation Fund being delivered against the
assets of LifeSpan  Balanced Fund,  registered in the name of LifeSpan  Balanced
Fund,  shall be transferred to LifeSpan  Balanced Fund on the Closing Date. Such
shares shall thereupon be assigned by LifeSpan Balanced Fund to its shareholders
so that the shares of Disciplined Allocation Fund may be distributed as provided
in Section 5.

            If, at the Closing  Date,  LifeSpan  Balanced  Fund is unable in the
ordinary course of business to make delivery under this Section 8 to Disciplined
Allocation  Fund of any of its portfolio  securities or cash for the reason that
any of such securities

                                     A-4

<PAGE>



purchased by LifeSpan Balanced Fund, or the cash proceeds of a sale of portfolio
securities,  prior to the  Closing  Date  have not yet been  delivered  to it or
LifeSpan  Balanced  Fund's  custodian,  then the delivery  requirements  of this
Section 8 with respect to said undelivered securities or cash will be waived and
Balanced Fund will deliver to Disciplined  Allocation  Fund by or on the Closing
Date and with respect to said undelivered  securities or cash executed copies of
an agreement or agreements of assignment in a form  reasonably  satisfactory  to
Disciplined Allocation Fund, together with such other documents, including a due
bill or due bills and brokers'  confirmation slips as may reasonably be required
by Disciplined Allocation Fund.

      9.  Disciplined  Allocation Fund shall not assume the liabilities  (except
for portfolio  securities  purchased  which have not settled and for shareholder
redemption  and dividend  checks  outstanding)  of LifeSpan  Balanced  Fund, but
LifeSpan Balanced Fund will, nevertheless, use its best efforts to discharge all
known  liabilities,  so far as may be possible,  prior to the Closing Date.  The
cost of printing and mailing the proxies and proxy  statements  will be borne by
LifeSpan Balanced Fund.  LifeSpan Balanced Fund and Disciplined  Allocation Fund
will  bear the cost of their  respective  tax  opinion.  Any  documents  such as
existing  prospectuses  or annual reports that are included in that mailing will
be a cost of the Fund issuing the document.  Any other out-of-pocket expenses of
Disciplined  Allocation  Fund and LifeSpan  Balanced Fund  associated  with this
reorganization, including legal, accounting and transfer agent expenses, will be
borne by LifeSpan Balanced Fund and Disciplined  Allocation Fund,  respectively,
in the amounts so incurred by each.

      10. The  obligations of  Disciplined  Allocation  Fund hereunder  shall be
subject to the following conditions:

            A. The Board of Directors of the Company shall have  authorized  the
execution of the Agreement, and the shareholders of LifeSpan Balanced Fund shall
have approved the  Agreement  and the  transactions  contemplated  thereby,  and
LifeSpan  Balanced  Fund shall have  furnished to  Disciplined  Allocation  Fund
copies of resolutions to that effect  certified by the Secretary or an Assistant
Secretary  of the  Company;  such  shareholder  approval  shall have been by the
affirmative  vote of "a  majority  of the  outstanding  voting  securities"  (as
defined in the Act) of LifeSpan  Balanced  Fund at a meeting  for which  proxies
have been  solicited  by the Proxy  Statement  and  Prospectus  (as  hereinafter
defined).

            B.  Disciplined  Allocation  Fund shall have  received an opinion of
counsel dated the Closing Date to LifeSpan Balanced Fund, to the effect that (i)
LifeSpan  Balanced Fund is a series of the Company  which is a corporation  duly
organized,  validly existing and in good standing under the laws of the State of
Maryland with

                                     A-5

<PAGE>



full powers to carry on its business as then being  conducted  and to enter into
and  perform  the  Agreement  (Maryland  counsel  may be  relied  upon  for this
opinion); and (ii) that all action necessary to make the Agreement, according to
its terms,  valid,  binding and  enforceable  on LifeSpan  Balanced  Fund and to
authorize  effectively the transactions  contemplated by the Agreement have been
taken by LifeSpan Balanced Fund.

            C. The  representations  and  warranties  of LifeSpan  Balanced Fund
contained  herein shall be true and correct at and as of the Closing  Date,  and
Disciplined  Allocation Fund shall have been furnished with a certificate of the
President,  or a Vice President,  or the Secretary or the Assistant Secretary or
the Treasurer of the Company, dated the Closing Date, to that effect.

            D. On the Closing Date,  LifeSpan Balanced Fund shall have furnished
to  Disciplined  Allocation  Fund a  certificate  of the  Treasurer or Assistant
Treasurer of the Company as to the amount of the capital loss carry-over and net
unrealized  appreciation  or  depreciation,  if any,  with  respect to  LifeSpan
Balanced Fund as of the Closing Date.

            E. The Cash  Reserve  shall not  exceed  10% of the value of the net
assets,  nor 30% in value of the gross assets,  of LifeSpan Balanced Fund at the
close of business on the Valuation Date.

            F. A Registration  Statement on Form N-14 filed by the Company under
the  Securities  Act  of  1933,  as  amended  (the  "1933  Act"),  containing  a
preliminary  form of the Proxy  Statement  and  Prospectus,  shall  have  become
effective under the 1933 Act not later than July 15, 1998.

            G. On the  Closing  Date,  Disciplined  Allocation  Fund  shall have
received a letter from Andrew J.  Donohue or other senior  executive  officer of
OppenheimerFunds,  Inc. acceptable to Disciplined  Allocation Fund, stating that
nothing  has come to his or her  attention  which in his or her  judgment  would
indicate  that  as of the  Closing  Date  there  were  any  material  actual  or
contingent  liabilities  of LifeSpan  Balanced  Fund  arising out of  litigation
brought against LifeSpan Balanced Fund or claims asserted against it, or pending
or to the best of his or her  knowledge  threatened  claims  or  litigation  not
reflected in or apparent from the most recent audited  financial  statements and
footnotes thereto of LifeSpan Balanced Fund delivered to Disciplined  Allocation
Fund.  Such letter may also include such additional  statements  relating to the
scope of the review conducted by such person and his or her responsibilities and
liabilities as are not unreasonable under the circumstances.

            H.    Disciplined Allocation Fund shall have received an

                                     A-6

<PAGE>



opinion, dated the Closing Date, of KPMG Peat Marwick LLP, to the same effect as
the opinion contemplated by Section 11.E of this Agreement.

            I.  Disciplined  Allocation  Fund shall have received at the closing
all of the assets of  LifeSpan  Balanced  Fund to be conveyed  hereunder,  which
assets shall be free and clear of all liens,  encumbrances,  security interests,
restrictions and limitations whatsoever.

      11. The  obligations of LifeSpan  Balanced Fund hereunder shall be subject
to the following conditions:

            A. The Board of Directors of the Company shall have  authorized  the
execution of the  Agreement,  and the  transactions  contemplated  thereby,  and
Disciplined  Allocation  Fund shall have  furnished  to LifeSpan  Balanced  Fund
copies of resolutions to that effect  certified by the Secretary or an Assistant
Secretary of the Company.

            B. LifeSpan  Balanced  Fund's  shareholders  shall have approved the
Agreement and the transactions contemplated hereby, by an affirmative vote of "a
majority  of the  outstanding  voting  securities"  (as  defined  in the Act) of
LifeSpan  Balanced  Fund,  and  LifeSpan  Balanced  Fund  shall  have  furnished
Disciplined  Allocation  Fund copies of resolutions to that effect  certified by
the Secretary or an Assistant Secretary of the Company.

            C.  LifeSpan  Balanced Fund shall have received an opinion dated the
Closing Date of counsel to Disciplined  Allocation  Fund, to the effect that (i)
Disciplined  Allocation  Fund is a series of the Company and is duly  organized,
validly  existing and in good  standing  under the laws of the state of Maryland
with full powers to carry on its business as then being  conducted  and to enter
into and perform  the  Agreement  (Maryland  counsel may be relied upon for this
opinion);  (ii) all action  necessary  to make the  Agreement,  according to its
terms,  valid,  binding and enforceable upon Disciplined  Allocation Fund and to
authorize  effectively the transactions  contemplated by the Agreement have been
taken by  Disciplined  Allocation  Fund,  and  (iii) the  shares of  Disciplined
Allocation Fund to be issued  hereunder are duly authorized and when issued will
be validly issued, fully-paid and non-assessable.

            D. The representations and warranties of Disciplined Allocation Fund
contained  herein shall be true and correct at and as of the Closing  Date,  and
LifeSpan  Balanced  Fund shall have been  furnished  with a  certificate  of the
President,  a Vice  President or the Secretary or an Assistant  Secretary or the
Treasurer of the Company to that effect dated the Closing Date.


                                     A-7

<PAGE>



            E.  LifeSpan  Balanced  Fund shall have  received an opinion of KPMG
Peat  Marwick  LLP to the  effect  that  the  Federal  tax  consequences  of the
transaction,   if  carried   out  in  the  manner   outlined  in  this  Plan  of
Reorganization   and  in   accordance   with  (i)   LifeSpan   Balanced   Fund's
representation  that there is no plan or intention by any Fund  shareholder  who
owns 5% or more of LifeSpan Balanced Fund's outstanding shares, and, to LifeSpan
Balanced Fund's best knowledge, there is no plan or intention on the part of the
remaining Fund shareholders, to redeem, sell, exchange or otherwise dispose of a
number of Disciplined  Allocation Fund shares  received in the transaction  that
would reduce  LifeSpan  Balanced  Fund  shareholders'  ownership of  Disciplined
Allocation  Fund shares to a number of shares having a value,  as of the Closing
Date,  of less than 50% of the  value of all of the  formerly  outstanding  Fund
shares as of the same  date,  and (ii) the  representation  by each of  LifeSpan
Balanced  Fund and  Disciplined  Allocation  Fund that,  as of the Closing Date,
LifeSpan   Balanced  Fund  and   Disciplined   Allocation  Fund  will  meet  the
diversification  test  of  Section  368(a)(2)(F)(ii)  of the  Code,  will  be as
follows:

                  1. The transactions contemplated by the Agreement will qualify
as a tax-free  "reorganization"  within the meaning of Section  368(a)(1) of the
Code, and under the regulations promulgated thereunder.

                  2. LifeSpan Balanced Fund and Disciplined Allocation Fund will
each  qualify as a "party to a  reorganization"  within  the  meaning of Section
368(b)(2) of the Code.

                  3. No gain or loss will be recognized by the  shareholders  of
LifeSpan Balanced Fund upon the distribution of shares of beneficial interest in
Disciplined  Allocation  Fund to the  shareholders  of  LifeSpan  Balanced  Fund
pursuant to Section 354 of the Code.

                  4.  Under  Section  361(a) of the Code no gain or loss will be
recognized by LifeSpan  Balanced Fund by reason of the transfer of substantially
all its assets in exchange for shares of Disciplined Allocation Fund.

                  5.  Under  Section  1032 of the  Code no gain or loss  will be
recognized  by  Disciplined  Allocation  Fund  by  reason  of  the  transfer  of
substantially all LifeSpan Balanced Fund's assets in exchange for Class A, Class
B and Class C shares of Disciplined  Allocation Fund and Disciplined  Allocation
Fund's assumption of
certain liabilities of LifeSpan Balanced Fund.

                  6. The  shareholders  of LifeSpan  Balanced Fund will have the
same tax basis and holding  period for the Class A, Class B or Class C shares of
beneficial interest in Disciplined Allocation Fund that they receive as they had
for LifeSpan Balanced

                                     A-8

<PAGE>



Fund shares that they previously  held,  pursuant to Section 358(a) and 1223(1),
respectively, of the Code.

                  7. The  securities  transferred  by LifeSpan  Balanced Fund to
Disciplined  Allocation  Fund will have the same tax basis and holding period in
the hands of Disciplined Allocation Fund as they had for LifeSpan Balanced Fund,
pursuant to Section 362(b) and 1223(1), respectively, of the Code.

            F. The Cash  Reserve  shall not  exceed  10% of the value of the net
assets,  nor 30% in value of the gross assets,  of LifeSpan Balanced Fund at the
close of business on the Valuation Date.

            G. A Registration  Statement on Form N-14 filed by the Company under
the  1933  Act,  containing  a  preliminary  form  of the  Proxy  Statement  and
Prospectus,  shall have become  effective under the 1933 Act not later than July
15, 1998.

            H. On the Closing Date, LifeSpan Balanced Fund shall have received a
letter  from  Andrew  J.   Donohue  or  other   senior   executive   officer  of
OppenheimerFunds,  Inc.  acceptable  to LifeSpan  Balanced  Fund,  stating  that
nothing  has come to his or her  attention  which in his or her  judgment  would
indicate  that  as of the  Closing  Date  there  were  any  material  actual  or
contingent  liabilities of Disciplined Allocation Fund arising out of litigation
brought against  Disciplined  Allocation Fund or claims asserted  against it, or
pending or, to the best of his or her knowledge, threatened claims or litigation
not reflected in or apparent by the most recent audited financial statements and
footnotes thereto of Disciplined  Allocation Fund delivered to LifeSpan Balanced
Fund.  Such letter may also include such additional  statements  relating to the
scope of the review conducted by such person and his or her responsibilities and
liabilities as are not unreasonable under the circumstances.

            I. LifeSpan Balanced Fund shall acknowledge receipt of the shares of
Disciplined Allocation Fund.

      12. The Company on behalf of LifeSpan  Balanced Fund hereby represents and
warrants that:

            A. The financial  statements of LifeSpan Balanced Fund as at October
31, 1997(audited)  heretofore furnished to Disciplined  Allocation Fund, present
fairly the financial position,  results of operations, and changes in net assets
of LifeSpan Balanced Fund as of that date, in conformity with generally accepted
accounting principles applied on a basis consistent with the preceding year; and
that from  October 31, 1997  through  the date hereof  there have not been,  and
through the Closing Date there will not be, any material  adverse  change in the
business or financial condition of

                                     A-9

<PAGE>



LifeSpan  Balanced Fund, it being agreed that a decrease in the size of LifeSpan
Balanced  Fund  due  to a  diminution  in the  value  of  its  portfolio  and/or
redemption of its shares shall not be considered a material adverse change;

            B.  Contingent  upon approval of the Agreement and the  transactions
contemplated thereby by LifeSpan Balanced Fund's shareholders, LifeSpan Balanced
Fund has authority to transfer all of the assets of LifeSpan Balanced Fund to be
conveyed  hereunder  free  and  clear  of  all  liens,  encumbrances,   security
interests, restrictions and limitations whatsoever;

            C.  The  Prospectus,  as  amended  and  supplemented,  contained  in
LifeSpan Balanced Fund's Registration  Statement under the 1933 Act, as amended,
is true, correct and complete,  conforms to the requirements of the 1933 Act and
does not  contain  any untrue  statement  of a material  fact or omit to state a
material fact required to be stated  therein or necessary to make the statements
therein not misleading.  The Registration  Statement, as amended, was, as of the
date of the  filing of the last  Post-Effective  Amendment,  true,  correct  and
complete,  conformed to the requirements of the 1933 Act and did not contain any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein not misleading;

            D. There is no material  contingent  liability of LifeSpan  Balanced
Fund and no  material  claim  and no  material  legal,  administrative  or other
proceedings  pending or, to the knowledge of LifeSpan Balanced Fund,  threatened
against LifeSpan Balanced Fund, not reflected in such Prospectus;

            E.  Except  for this  Agreement,  there  are no  material  contracts
outstanding to which LifeSpan Balanced Fund is a party other than those ordinary
in the conduct of its business;

            F.  LifeSpan  Balanced  Fund is a series of the  Company  which is a
Maryland corporation duly organized, validly existing and in good standing under
the laws of the State of Maryland;  and has all necessary  and material  Federal
and state  authorizations  to own all of its assets and to carry on its business
as now being  conducted;  and the Company is duly  registered  under the Act and
such  registration  has not been  rescinded  or revoked and is in full force and
effect;

            G. All  Federal  and other  tax  returns  and  reports  of  LifeSpan
Balanced Fund  required by law to be filed have been filed,  and all Federal and
other taxes shown due on said  returns and reports  have been paid or  provision
shall have been made for the payment thereof and to the best of the knowledge of
LifeSpan Balanced Fund no such return is currently under audit and no

                                     A-10

<PAGE>



assessment has been asserted with respect to such returns and to the extent such
tax returns  with respect to the taxable  year of LifeSpan  Balanced  Fund ended
October 31, 1997 have not been filed,  such returns will be filed when  required
and the amount of tax shown as due thereon shall be paid when due; and

            H.  LifeSpan  Balanced Fund has elected to be treated as a regulated
investment  company  and,  for  each  fiscal  year of its  operations,  LifeSpan
Balanced  Fund  has  met  the  requirements  of  Subchapter  M of the  Code  for
qualification  and  treatment  as a regulated  investment  company and  LifeSpan
Balanced  Fund  intends to meet such  requirements  with  respect to its current
taxable year.

      13. The Company on behalf of Disciplined Allocation Fund hereby represents
and warrants that:

            A. The financial  statements of  Disciplined  Allocation  Fund as at
October 31, 1997  (audited)  heretofore  furnished  to LifeSpan  Balanced  Fund,
present fairly the financial position, results of operations, and changes in net
assets of  Disciplined  Allocation  Fund, as of that date,  in  conformity  with
generally accepted accounting  principles applied on a basis consistent with the
preceding  year;  and that from  October 31, 1997  through the date hereof there
have not been,  and  through the  Closing  Date there will not be, any  material
adverse changes in the business or financial condition of Disciplined Allocation
Fund, it being understood that a decrease in the size of Disciplined  Allocation
Fund due to a diminution in the value of its portfolio and/or  redemption of its
shares shall not be considered a material or adverse change;

            B. The  Prospectus,  as amended and  supplemented,  contained in the
Company's  Registration  Statement  under the 1933  Act,  is true,  correct  and
complete,  conforms to the requirements of the 1933 Act and does not contain any
untrue statement of a material fact or omit to state a material fact required to
be stated  therein or necessary to make the statements  therein not  misleading.
The Registration Statement, as amended, was, as of the date of the filing of the
last  Post-Effective  Amendment,  true,  correct and complete,  conformed to the
requirements  of the 1933 Act and did not  contain  any  untrue  statement  of a
material fact or omit to state a material fact required to be stated  therein or
necessary to make the statements therein not misleading;

            C.  Except  for  this  Agreement,  there is no  material  contingent
liability of Disciplined  Allocation  Fund and no material claim and no material
legal,  administrative  or other  proceedings  pending or, to the  knowledge  of
Disciplined Allocation Fund, threatened against Disciplined Allocation Fund, not
reflected in such Prospectus;

            D.    There are no material contracts outstanding to which

                                     A-11

<PAGE>



Disciplined  Allocation Fund is a party other than those ordinary in the conduct
of its business;

            E. Disciplined Allocation Fund is a series of the Company which is a
Maryland corporation duly organized, validly existing and in good standing under
the laws of the State of Maryland;  has all necessary  and material  Federal and
state  authorizations  to own all its  properties and assets and to carry on its
business as now being conducted; the shares of Disciplined Allocation Fund which
it issues to  LifeSpan  Balanced  Fund  pursuant to the  Agreement  will be duly
authorized,  validly issued, fully-paid and non-assessable;  and will conform to
the description thereof contained in Disciplined  Allocation Fund's Registration
Statement,  will be duly  registered  under the 1933 Act and in the states where
registration  is required;  and  Disciplined  Allocation Fund is duly registered
under the Act and such  registration has not been revoked or rescinded and is in
full force and effect;

            F. All Federal  and other tax  returns  and  reports of  Disciplined
Allocation Fund required by law to be filed have been filed, and all Federal and
other taxes shown due on said  returns and reports  have been paid or  provision
shall have been made for the payment thereof and to the best of the knowledge of
Disciplined  Allocation  Fund no such  return is  currently  under  audit and no
assessment has been asserted with respect to such returns and to the extent such
tax returns  with  respect to the taxable year of  Disciplined  Allocation  Fund
ended  October  31, 1997 have not been filed,  such  returns  will be filed when
required and the amount of tax shown as due thereon shall be paid when due;

            G.  Disciplined  Allocation  Fund has  elected  to be  treated  as a
regulated  investment  company  and,  for each  fiscal  year of its  operations,
Disciplined Allocation Fund has met the requirements of Subchapter M of the Code
for  qualification  and  treatment  as  a  regulated   investment   company  and
Disciplined  Allocation Fund intends to meet such  requirements  with respect to
its current taxable year;

            H.  Disciplined  Allocation  Fund  has no plan or  intention  (i) to
dispose of any of the assets  transferred by LifeSpan  Balanced Fund, other than
in the ordinary  course of business,  or (ii) to redeem or reacquire  any of the
shares issued by it in the reorganization  other than pursuant to valid requests
of shareholders; and

            I.  After  consummation  of  the  transactions  contemplated  by the
Agreement,  Disciplined  Allocation  Fund  intends to operate its  business in a
substantially unchanged manner.

      14. Each party hereby represents to the other that no broker or finder has
been employed by it with respect to the Agreement or

                                     A-12

<PAGE>



the transactions contemplated hereby. Each party also represents and warrants to
the  other  that  the  information  concerning  it in the  Proxy  Statement  and
Prospectus  will not as of its date  contain any untrue  statement of a material
fact or omit to state a fact  necessary  to make the  statements  concerning  it
therein not  misleading  and that the  financial  statements  concerning it will
present the  information  shown fairly in  accordance  with  generally  accepted
accounting  principles  applied on a basis  consistent  with the preceding year.
Each party also  represents  and  warrants  to the other that the  Agreement  is
valid,  binding  and  enforceable  in  accordance  with its  terms  and that the
execution,  delivery and  performance  of the  Agreement  will not result in any
violation of, or be in conflict  with,  any  provision of any charter,  by-laws,
contract,  agreement,  judgment,  decree or order to which it is  subject  or to
which  it is a party.  Disciplined  Allocation  Fund  hereby  represents  to and
covenants  with  LifeSpan  Balanced  Fund that,  if the  reorganization  becomes
effective,  Disciplined  Allocation Fund will treat each shareholder of LifeSpan
Balanced  Fund who received any of  Disciplined  Allocation  Fund's  shares as a
result of the  reorganization  as having  made the minimum  initial  purchase of
shares of  Disciplined  Allocation  Fund  received by such  shareholder  for the
purpose of making  additional  investments in shares of  Disciplined  Allocation
Fund,  regardless  of the value of the  shares of  Disciplined  Allocation  Fund
received.

      15.  Disciplined  Allocation  Fund agrees that it will  prepare and file a
Registration  Statement  on Form N-14 under the 1933 Act which  shall  contain a
preliminary  form of proxy  statement and  prospectus  contemplated  by Rule 145
under the 1933 Act. The final form of such proxy  statement  and  prospectus  is
referred to in the Agreement as the "Proxy Statement and Prospectus." Each party
agrees  that it will use its best  efforts to have such  Registration  Statement
declared  effective  and  to  supply  such  information  concerning  itself  for
inclusion in the Proxy Statement and Prospectus as may be necessary or desirable
in this connection.  Oppenheimer LifeSpan Balanced Fund covenants and agrees, as
soon as  practicable  and,  upon  closing,  to  cause  the  cancellation  of its
outstanding shares.

      16. The obligations of the parties, their respective directors,  officers,
agents or others acting on their behalf under the Agreement  shall be subject to
obtaining an exemptive order from the Securities and Exchange  Commission  under
Section  17(a)  of the Act and to the  right of  either  party  to  abandon  and
terminate  the  Agreement  for any reason and there  shall be no  liability  for
damages  or  other  recourse  available  to a  party  not  so  terminating  this
Agreement,  provided,  however,  that in the event that a party shall  terminate
this Agreement without  reasonable  cause, the party so terminating  shall, upon
demand,  reimburse  the party not so  terminating  for all  expenses,  including
reasonable  out-of-pocket  expenses and fees  incurred in  connection  with this
Agreement.

                                     A-13

<PAGE>



      17. The Agreement may be executed in several  counterparts,  each of which
shall be deemed  an  original,  but all  taken  together  shall  constitute  one
Agreement.  The rights and  obligations  of each party pursuant to the Agreement
shall not be assignable.

      18. All prior or contemporaneous agreements and representations are merged
into the Agreement,  which  constitutes the entire contract  between the parties
hereto.  No  amendment or  modification  hereof shall be of any force and effect
unless in writing and signed by the parties and no party shall be deemed to have
waived  any  provision  herein  for its  benefit  unless it  executes  a written
acknowledgment of such waiver.

      IN WITNESS  WHEREOF,  each of the parties has caused the  Agreement  to be
executed and  attested by its officers  thereunto  duly  authorized  on the date
first set forth above.

                         OPPENHEIMER SERIES FUND, INC.,
                                    on behalf of
                       OPPENHEIMER DISCIPLINED ALLOCATION
                                    FUND



                      By:__________________________________
                         Andrew J. Donohue, Secretary



                          OPPENHEIMER SERIES FUND, INC.
                                    on behalf of
                       OPPENHEIMER LIFESPAN BALANCED FUND



                      By:_________________________________
                         Andrew J. Donohue, Secretary

                                     A-14

<PAGE>


                                  EXHIBIT B



                         Average Annual Total Returns
                        for the Periods Ended 10/31/97


                                                1-YEAR  3-YEAR   5-YEAR  10-YEAR


Disciplined Allocation Fund Class A Shares(1)   11.99%   13.40%  11.78%  12.38%

LifeSpan Balanced Fund Class A Shares (1)        6.18%

Disciplined Allocation Fund Class B Shares(2)   12.96%

LifeSpan Balanced Fund Class B Shares (2)        6.70%

Disciplined Allocation Fund Class C Shares(3)    16.93%

LifeSpan Balanced Fund Class C Shares (3)        10.73%


Total Returns  include change in share price and  reinvestment  of dividends and
capital gains distributions in a hypothetical  investment for the periods shown.
An  explanation  of the  different  performance  calculations  is in each Fund's
Prospectus.

(1) Class A returns  include the current  maximum initial sales charge of 5.75%.
Disciplined  Allocation  Fund's maximum sales charge rate for Class A shares was
higher  during a portion of some of the periods  shown,  so that actual  results
would have been lower.

(2) Class B returns include the applicable  contingent  deferred sales charge of
5%  (1-year).  Class B shares are subject to an annual 0.75%  asset-based  sales
charge.

(3) Class C returns for the one year period reflects the 1% contingent  deferred
sales charge.  Class C shares are subject to an annual 0.75%  asset-based  sales
charge.





                                         B-1

<PAGE>


OPPENHEIMER LIFESPAN GROWTH FUND

Proxy for Special Shareholders Meeting to be held June 9, 1998

YOUR SHAREHOLDER VOTE IS IMPORTANT!

YOUR PROMPT RESPONSE CAN SAVE YOUR FUND THE EXPENSE OF ANOTHER MAILING.

Please  mark your  proxy on the  reverse  side,  date and sign it, and return it
promptly in the accompanying envelope which requires no postage if mailed in the
United States.

                 Please detach at perforation before mailing.
      -------------------------------------------------------------------
OPPENHEIMER LIFESPAN GROWTH FUND

Proxy For Special Shareholders Meeting to be held June 9, 1998

THE UNDERSIGNED  SHAREHOLDER OF OPPENHEIMER  LIFESPAN  GROWTH FUND(the  "Fund"),
does hereby  appoint  Robert J. Bishop,  George C. Bowen,  Andrew J. Donohue and
Scott T.  Farrar,  and each of them,  as  attorneys-in-fact  and  proxies of the
undersigned,  with full power of substitution,  to attend the Special Meeting of
the  Shareholders  of the Fund to be held on June 9, 1998,  at 6803 SOUTH TUCSON
WAY,  ENGLEWOOD,  COLORADO  80112  at  10:00  A.M.,  Denver  time,  and  at  all
adjournments thereof, and to vote the shares held in the name of the undersigned
on the record date for said  meeting on the  Proposal  specified  on the reverse
side. Said  attorneys-in-fact  shall vote in accordance with their best judgment
as to any other matter.

PROXY  SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS  who  recommends a vote FOR
the proposal on the reverse side. THE SHARES REPRESENTED HEREBY WILL BE VOTED AS
INDICATED ON THE REVERSE SIDE OR FOR IF NO CHOICE IS INDICATED.

                                                                        (Over)
                                                                           335



<PAGE>


OPPENHEIMER LIFESPAN GROWTH FUND

Proxy for Special Shareholders Meeting to be held June 9, 1998

YOUR SHAREHOLDER VOTE IS IMPORTANT!

YOUR PROMPT  RESPONSE CAN SAVE YOUR FUND MONEY.  Please vote, sign and mail your
proxy ballot (this card) in the enclosed  postage-paid envelope today, no matter
how many shares you own. A majority of the Fund's shares must be  represented in
person or by proxy. Please vote your proxy so your Fund can avoid the expense of
another mailing.

                 Please detach at perforation before mailing.
      -------------------------------------------------------------------
1. THE PROPOSAL: To approve an Agreement and Plan of Reorganization  between the
Fund and Oppenheimer  Disciplined Value Fund ("Disciplined Value Fund"), and the
transactions  contemplated thereby,  including (a) the transfer of substantially
all the assets of the Fund in exchange for shares of Disciplined Value Fund, (b)
the  distribution  of such  shares to the  shareholders  of the Fund in complete
liquidation of the Fund, and (c) the  cancellation of the outstanding  shares of
the Fund.

1.    o     FOR         o     AGAINST           o     ABSTAIN

NOTE:  PLEASE SIGN EXACTLY AS YOUR NAME(S) APPEAR ON THIS PROXY. When signing as
custodian,  attorney, executor,  administrator,  trustee, etc., please give your
full title as such.  All joint owners should sign this proxy.  If the account is
registered in the name of a  corporation,  partnership  or other entity,  a duly
authorized individual must sign on its behalf and give his or her title.

                              DATED: _______________________, 1998
                                     (Month)       (Day)

                                    ___________________________________
                                    SIGNATURE(S)

                                    ___________________________________
                                    SIGNATURE(S)

                                    Please read both sides of this ballot

                                                                        (Over)
                                                                           335




<PAGE>



BRIDGET A. MACASKILL

President and Chief Executive Officer




                                                         April 8, 1998


Dear Oppenheimer LifeSpan Growth Fund Shareholder,

      One of the things we pride ourselves on at  OppenheimerFunds,  Inc. is our
commitment to searching for new investment opportunities for our shareholders. I
am  writing to you today to let you know  about one of these  opportunities  - a
positive change that has been proposed for Oppenheimer LifeSpan Growth Fund.

      After careful  consideration,  the Board of Directors agreed that it would
be in the best interest of shareholders  of Oppenheimer  LifeSpan Growth Fund to
reorganize into another Oppenheimer fund, Oppenheimer  Disciplined Value Fund. A
shareholder  meeting  has been  scheduled  for  June  9th,  and all  Oppenheimer
LifeSpan  Growth  Fund  shareholders  of record on March 17th are being asked to
vote  either in person or by  proxy.  You will find a notice of the  meeting,  a
ballot  card,  a  proxy  statement   detailing  the  proposal,   an  Oppenheimer
Disciplined  Value Fund prospectus and a postage-paid  return envelope  enclosed
for your use.

WHY DOES THE BOARD OF DIRECTORS RECOMMEND THIS CHANGE?

      Oppenheimer  LifeSpan Growth Fund and Oppenheimer  Disciplined Value Fund,
Inc. have compatible  objectives,  as discussed in the enclosed proxy statement.
We  believe  that  Oppenheimer  Disciplined  Value  Fund's  flexible  management
approach  allows that fund to respond more  effectively  to changing  market and
economic   conditions,   and  can  offer  shareholders  even  better  investment
opportunities over the long term.

      Another benefit for shareholders is the greater economy of scale resulting
from  consolidation  into  a much  larger  fund.  By  merging  into  Oppenheimer
Disciplined  Value  Fund - which  now has over $420  million  in assets - former
shareholders  of  Oppenheimer  LifeSpan  Growth  Fund may  benefit  from a lower
expense ratio as costs are spread among a larger number of shares.

HOW DO YOU VOTE?

      No matter how large or small your investment,  your vote is important,  so
please review the proxy  statement  carefully.  To cast your vote,  simply mark,
sign and date the  enclosed  proxy  ballot  and  return  it in the  postage-paid
envelope today.  Remember, it can be expensive for the Fund - and ultimately you
as a shareholder - to remail the ballots if not enough responses are received to
conduct the meeting.

                                                                (over, please)


<PAGE>




      If you have any questions about the proposal,  please feel free to contact
your financial advisor, or call us at 1-800-525-7048.

      As always,  we appreciate  your  confidence in  OppenheimerFunds  and look
forward to serving you for many years to come.

                                                      Sincerely,



                                                      /s/ Bridget A. Macaskill

Enclosures








<PAGE>



                       OPPENHEIMER LIFESPAN GROWTH FUND
               TWO WORLD TRADE CENTER, NEW YORK, NY  10048-0203
                                1-800-525-7048

                   NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                          TO BE HELD ON JUNE 9, 1998

TO THE SHAREHOLDERS OF OPPENHEIMER LIFESPAN GROWTH FUND:

Notice is hereby given that a Special Meeting of the Shareholders of Oppenheimer
LifeSpan Growth Fund ("LifeSpan  Growth Fund"),  a series of Oppenheimer  Series
Fund, Inc., a registered  management  investment  company,  will be held at 6803
SOUTH TUCSON WAY, ENGLEWOOD,  COLORADO 80112 at 10:00 A.M., Denver time, on June
9,  1998,  or any  adjournments  thereof  (the  "Meeting"),  for  the  following
purposes:

1. To approve or  disapprove  an Agreement  and Plan of  Reorganization  between
LifeSpan Growth Fund and Oppenheimer  Disciplined Value Fund ("Disciplined Value
Fund"), and the transactions contemplated thereby, including (a) the transfer of
substantially  all the assets of LifeSpan  Growth Fund in exchange  for Class A,
Class B and Class C shares of Disciplined  Value Fund, (b) the  distribution  of
such shares to the  corresponding  Class A, Class B and Class C shareholders  of
LifeSpan Growth Fund in complete liquidation of LifeSpan Growth Fund and (c) the
cancellation of the outstanding shares of LifeSpan Growth Fund (the "Proposal").

2. To act upon such other matters as may properly come before the Meeting.

Shareholders  of record at the close of business on March 17, 1998 are  entitled
to notice of, and to vote at, the Meeting.  The Proposal is more fully discussed
in the Proxy Statement and Prospectus.  Please read it carefully  before telling
us,  through  your  proxy or in  person,  how you wish your  shares to be voted.
LifeSpan  Growth  Fund's  Board of  Directors  recommends a vote in favor of the
Proposal. WE URGE YOU TO SIGN, DATE AND MAIL THE ENCLOSED PROXY PROMPTLY.

By Order of the Board of Directors,


Andrew J. Donohue, Secretary

April 6, 1998
- ------------------------------------------------------------------
SHAREHOLDERS  WHO DO NOT EXPECT TO ATTEND THE MEETING ARE  REQUESTED TO INDICATE
VOTING INSTRUCTIONS ON THE ENCLOSED PROXY AND TO DATE, SIGN AND RETURN IT IN THE
ACCOMPANYING  POSTAGE-PAID ENVELOPE. TO AVOID UNNECESSARY DUPLICATE MAILINGS, WE
ASK YOUR COOPERATION IN PROMPTLY MAILING YOUR PROXY NO MATTER HOW LARGE OR SMALL
YOUR HOLDINGS MAY BE. 
335


<PAGE>



                       OPPENHEIMER LIFESPAN GROWTH FUND
               TWO WORLD TRADE CENTER, NEW YORK, NY 10048-0203
                                1-800-525-7048

                               PROXY STATEMENT

                      OPPENHEIMER DISCIPLINED VALUE FUND
               TWO WORLD TRADE CENTER, NEW YORK, NY 10048-0203
                                1-800-525-7048

                                  PROSPECTUS

This Proxy  Statement of  Oppenheimer  LifeSpan  Growth Fund  ("LifeSpan  Growth
Fund") relates to the Agreement and Plan of Reorganization (the  "Reorganization
Agreement")and  the  transactions  contemplated  thereby (the  "Reorganization")
between  Oppenheimer  Series  Fund,  Inc. on behalf of its  series,  Oppenheimer
LifeSpan  Growth  Fund  and  its  series,  Oppenheimer  Disciplined  Value  Fund
("Disciplined  Value Fund").  This Proxy Statement also constitutes a Prospectus
of  Disciplined  Value Fund  included in a  Registration  Statement on Form N-14
filed by Disciplined Value Fund with the Securities and Exchange Commission (the
"SEC").  Such  Registration  Statement  relates to the registration of shares of
Disciplined Value Fund to be offered to the shareholders of LifeSpan Growth Fund
pursuant to the Reorganization Agreement. LifeSpan Growth Fund is located at Two
World Trade Center, New York, NY 10048-0203 (telephone 1-800- 525-7048).

This Proxy Statement and Prospectus  sets forth  information  about  Disciplined
Value Fund and the  Reorganization  that  shareholders  of LifeSpan  Growth Fund
should know before voting on the  Reorganization.  A copy of the  Prospectus for
Disciplined  Value Fund, dated February 19, 1998, is enclosed,  and incorporated
herein by reference.  The following  documents  have been filed with the SEC and
are available without charge upon written request to OppenheimerFunds  Services,
the transfer and  shareholder  servicing  agent for  Disciplined  Value Fund and
LifeSpan  Growth Fund, at P.O. Box 5270,  Denver,  Colorado 80217, or by calling
the toll-free  number shown above:  (i) a Prospectus  for LifeSpan  Growth Fund,
dated February 19, 1998, as supplemented  February 24, 1998, (ii) a Statement of
Additional  Information  about LifeSpan Growth Fund, dated February 19, 1998 and
(iii) a Statement of Additional  Information about Disciplined Value Fund, dated
February  19, 1998 (the  "Disciplined  Value Fund  Additional  Statement").  The
Disciplined  Value Fund Additional  Statement,  which is incorporated  herein by
reference,  contains more detailed  information about Disciplined Value Fund and
its  management.   A  Statement  of  Additional   Information  relating  to  the
Reorganization,  dated April 6, 1998, has been filed with the SEC as part of the
Disciplined Value Fund  Registration  Statement on Form N-14 and is incorporated
herein by  reference,  and is available by written  request to  OppenheimerFunds
Services at the same  address  listed above or by calling the  toll-free  number
shown above.

INVESTORS ARE ADVISED TO READ AND RETAIN THIS PROXY STATEMENT AND PROSPECTUS FOR
FUTURE REFERENCE.


THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE COMMISSION NOR HAS THE COMMISSION PASSED ON THE ACCURACY OR ADEQUACY OF
THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


This Proxy Statement and Prospectus is dated April 6, 1998.



<PAGE>



                               TABLE OF CONTENTS
                        PROXY STATEMENT AND PROSPECTUS
                                                                        PAGE
INTRODUCTION.............................................................
   General..............................................................1
   Record Date; Vote Required; Share Information........................2
   Proxies..............................................................3
   Costs of the Solicitation and the Reorganization.....................4
COMPARATIVE FEE TABLE...................................................5
SYNOPSIS................................................................8
   Parties to the Reorganization........................................9
   Shares to be Issued..................................................9
   The Reorganization      .............................................9
   Reasons for the Reorganization......................................10
   Tax Consequences of the Reorganization..............................10
   Investment Objectives and Policies..................................11
   Investment Advisory and Distribution and Service Plan Fees............
   Purchases, Exchanges and Redemptions................................12
PRINCIPAL RISK FACTORS.................................................13
APPROVAL OF THE REORGANIZATION (THE PROPOSAL)..........................16
   Reasons for the Reorganization......................................16
   The Reorganization..................................................18
   Tax Aspects of the Reorganization...................................19
   Capitalization Table (Unaudited)....................................21
COMPARISON BETWEEN LIFESPAN GROWTH FUND AND OPPENHEIMER DISCIPLINED
VALUE FUND
   Investment Objectives and Policies..................................22
   Permitted Investments by Oppenheimer LifeSpan Growth Fund and
     Oppenheimer Disciplined Value Fund................................24
   Investment Restrictions.............................................33
   Description of Brokerage Practices..................................37
   Expense Ratios and Performance......................................39
   Shareholder Services................................................39
   Rights of Shareholders..............................................40
   Management and Distribution Arrangements............................42
   Purchase of Additional Shares.......................................44
METHOD OF CARRYING OUT THE REORGANIZATION .............................45
ADDITIONAL INFORMATION.................................................47
   Financial Information...............................................47
   Public Information..................................................47
OTHER BUSINESS.........................................................48
EXHIBIT A - Agreement and Plan of Reorganization by and between
Oppenheimer LifeSpan Growth Fund and
Oppenheimer Disciplined Value Fund.......................................  A-1
EXHIBIT B - Average Annual Total Returns for the Periods
Ended 12/31/97...........................................................  B-1


<PAGE>



                       OPPENHEIMER LIFESPAN GROWTH FUND
               TWO WORLD TRADE CENTER, NEW YORK, NY  10048-0203
                                1-800-525-7048

                        PROXY STATEMENT AND PROSPECTUS

                        SPECIAL MEETING OF SHAREHOLDERS
                            TO BE HELD JUNE 9, 1998

                                 INTRODUCTION

GENERAL

This Proxy  Statement and Prospectus is being  furnished to the  shareholders of
Oppenheimer   LifeSpan  Growth  Fund  ("LifeSpan  Growth  Fund"),  a  series  of
Oppenheimer  Series  Fund,  Inc.  (the  "Company"),   a  registered   management
investment  company,  in  connection  with  the  solicitation  by the  Board  of
Directors  (the  "Board")  of  proxies  to be used  at the  Special  Meeting  of
Shareholders  of  LifeSpan  Growth  Fund to be held at 6803  SOUTH  TUCSON  WAY,
ENGLEWOOD,  COLORADO 80112, at 10:00 A.M.,  Denver time, on June 9, 1998, or any
adjournments  thereof (the  "Meeting").  It is expected that the mailing of this
Proxy Statement and Prospectus will commence on or about April 14, 1998.

At the Meeting, shareholders of LifeSpan Growth Fund will be asked to approve an
Agreement and Plan of Reorganization  (the  "Reorganization  Agreement") between
the  Company  on behalf of  LifeSpan  Growth  Fund and the  Company on behalf of
Oppenheimer   Disciplined  Value  Fund  ("Disciplined   Value  Fund"),  and  the
transactions  contemplated thereby,  including (a) the transfer of substantially
all the assets of  LifeSpan  Growth  Fund in  exchange  for Class A, Class B and
Class C shares of Disciplined Value Fund, (b) the distribution of such shares to
the  corresponding  Class A, Class B and Class C shareholders of LifeSpan Growth
Fund in complete  liquidation of LifeSpan Growth Fund, and (c) the  cancellation
of the outstanding shares of LifeSpan Growth Fund (the "Reorganization").

Disciplined  Value Fund  currently  offers  Class A shares  with a sales  charge
imposed at the time of purchase.  There is no initial  sales charge on purchases
of Class B or Class C shares; however, a contingent deferred sales charge may be
imposed, depending on when the shares are sold. The Class A, Class B and Class C
shares issued pursuant to the  Reorganization  will be issued at net asset value
without a sales charge and no contingent  deferred  sales charge will be imposed
on any LifeSpan Growth Fund shares exchanged in the Reorganization. However, any
contingent  deferred  sales charge which applies to LifeSpan  Growth Fund shares
will  continue  to  apply to  Disciplined  Value  Fund  shares  received  in the
Reorganization.   Additional  information  with  respect  to  these  charges  by
Disciplined Value Fund is set forth herein, in the

                                     -1-

<PAGE>



Prospectus  of  Disciplined  Value Fund  accompanying  this Proxy  Statement and
Prospectus and in the Disciplined Value Fund Statement of Additional Information
("Disciplined Value Fund Additional Statement"),  both of which are incorporated
herein by reference.

RECORD DATE; VOTE REQUIRED; SHARE INFORMATION

The Board of  Directors  of the Company has fixed the close of business on March
17,  1998 as the  record  date (the  "Record  Date")  for the  determination  of
shareholders  entitled to notice of, and to vote at, the Meeting. An affirmative
vote of the holders of a "majority of the  outstanding  voting  securities,"  as
defined in the  Investment  Company  Act of 1940,  as amended  (the  "Investment
Company Act") of all of the Class A, Class B and Class C shares in the aggregate
of LifeSpan Growth Fund is required to approve the Reorganization. That level of
vote is defined in the Investment Company Act of 1940 as the vote of the holders
of the  lesser  of:  (i)  67%  or  more  of the  voting  securities  present  or
represented by proxy at the  shareholders  meeting,  if the holders of more than
50% of the outstanding voting securities are present or represented by proxy, or
(ii) more than 50% of the outstanding voting  securities.  Each shareholder will
be entitled to one vote for each share and a fractional vote for each fractional
share  held of  record  at the  close  of  business  on the  Record  Date.  Only
shareholders of LifeSpan Growth Fund will vote on the  Reorganization.  The vote
of shareholders of Disciplined Value Fund is not being solicited.

At  the  close  of  business  on  the  Record  Date,  there  were  approximately
4,746,503.554 shares of LifeSpan Growth Fund issued and outstanding,  consisting
of  4,154,307.592  Class A shares,  476,740.532  Class B shares and  115,455.430
Class C  shares.  At the  close of  business  on the  Record  Date,  there  were
29,554,045.391   shares  of  Disciplined  Value  Fund  issued  and  outstanding,
consisting  of  19,225,376.265  Class A  shares,  4,703,433.160  Class B shares,
671,323.753  Class C shares and  4,953,912.213  Class Y shares.  The presence in
person or by proxy of the  holders  of a majority  of the shares of all  classes
constitutes  a quorum for the  transaction  of business at the  Meeting.  To the
knowledge  of LifeSpan  Growth Fund,  as of the Record Date,  no person owned of
record or beneficially owned 5% or more of its outstanding shares except for MML
Securities Corporation,  1414 Main Street, Springfield, MA 01144, which owned of
record  2,986,502.938  Class A shares of  LifeSpan  Growth  Fund as of such date
(which  represented  71.88% of the outstanding Class A shares of LifeSpan Growth
Fund);  Frank Casey TR, U/A May 11, 1988,  Frank R. Casey  Trust,  1866 W. Tweed
Road, Iverness,  IL 60067-4251,  which of record owned 35,013.975 Class B shares
of LifeSpan  Growth Fund  (7.34% of the  outstanding  Class B shares of LifeSpan
Growth  Fund as of such  date) and  Merrill  Lynch  Pierce  Fenner & Smith  Inc.
("Merrill  Lynch"),  4800 Deer Lake  Drive  East,  3rd Floor,  Jacksonville,  FL
32246-6484, which of record

                                     -2-

<PAGE>



owned  24,459.237  Class  C  shares  of  LifeSpan  Growth  Fund  (21.18%  of the
outstanding  Class C  shares  of  LifeSpan  Growth  Fund as of  such  date)  and
Donaldson Lufkin Jenrette  Securities  Corporation,  Inc., P.O. Box 2052, Jersey
City, NJ 07303-9998,  which of record owned 8,137.010 Class C shares of LifeSpan
Growth Fund (7.14% of the outstanding  Class C shares of LifeSpan Growth Fund as
of such  date).]  The  Manager  has been  advised  that such shares were held by
Merrill Lynch for the benefit of their  respective  customers.  As of the Record
Date, to the knowledge of  Disciplined  Value Fund, no person owned of record or
beneficially  owned  5% or  more  of  its  outstanding  shares  except  for  MML
Securities  Corporation,  1414 Main Street,  Springfield,  MA 01144-1008,  which
owned of record  2,021,084.058  Class A shares of  Disciplined  Value Fund as of
such date (10.51% of the outstanding Class A shares of Disciplined Value Fund as
of such  date) and  MassMutual  Life  Insurance  Company  which  owned of record
1,311,665.574 Class A shares of Disciplined Value Fund as of such date (6.82% of
the  outstanding  Class A shares of Disciplined  Value Fund as of such date) and
Merrill Lynch,  Pierce,  Fenner & Smith For the Benefit of its  Customers,  4800
Deer Lake Drive E. Fl 3,  Jacksonville,  FL  32246-6484,  which  owned of record
41,721.432  Class C shares of  Disciplined  Value Fund as of such date (6.21% of
the  outstanding  Class C shares of Disciplined  Value Fund as of such date). In
addition,  as of the record date, the Directors and officers of LifeSpan  Growth
Fund and Disciplined Value Fund owned less than 1% of the outstanding  shares of
either LifeSpan Growth Fund or Disciplined Value Fund, respectively.

Massachusetts  Mutual Life Insurance  Company,  the majority  shareholder of the
Fund, intends to vote its shares in favor of the Reorganization.

PROXIES

The enclosed form of proxy, if properly executed and returned, will be voted (or
counted as an abstention or withheld from voting) in accordance with the choices
specified thereon,  and will be included in determining  whether there is quorum
to conduct the Meeting.  The proxy will be voted in favor of the Proposal unless
a choice is indicated to vote against or to abstain from voting on the Proposal.

Shares  owned of record by  broker-dealers  for the  benefit of their  customers
("street  account  shares")  will  be  voted  by  the  broker-dealer   based  on
instructions received from its customers.  If no instructions are received,  the
broker-dealer  may (if permitted  under  applicable  stock exchange  rules),  as
record holder,  vote such shares on the Proposal in the same  proportion as that
broker-dealer  votes street  account shares for which voting  instructions  were
received in time to be voted.  Broker  "non-votes"  exist where a proxy received
from a broker indicates that the broker does not have discretionary authority to
vote the shares on the matter.

                                     -3-

<PAGE>



Shares  represented in person or by proxy (including  shares which abstain or do
not vote on the  Proposal,  including  broker "non-  votes") will be counted for
purposes of  determining  the number of shares that are present and are entitled
to vote on the  Proposal,  but  will not be  counted  as a vote in favor of such
Proposal.  Accordingly,  an  abstention  from voting on the Proposal or a broker
"non-vote" will have the same legal effect as a vote against the Proposal.  If a
shareholder  executes  and returns a proxy but fails to  indicate  how the votes
should be cast, the proxy will be voted in favor of the Proposal.  The proxy may
be  revoked  at any time prior to the  voting  thereof  by:  (i)  writing to the
Secretary of LifeSpan Growth Fund at Two World Trade Center, New York, NY 10048-
0203 (if  received in time to be acted  upon);  (ii)  attending  the Meeting and
voting in person;  or (iii)  signing and  returning a new proxy (if returned and
received in time to be voted).

If at the time any  session  of the  Meeting  is called to order a quorum is not
present,  in person or by proxy,  the  persons  named as proxies  may vote those
proxies  which have been received to adjourn the Meeting to a later date. In the
event that a quorum is present  but  sufficient  votes in favor of the  Proposal
have not been  received,  the  persons  named as proxies may propose one or more
adjournments of the Meeting to permit further  solicitation of proxies. All such
adjournments  will  require  the  affirmative  vote of a majority  of the shares
present in person or by proxy at the session of the Meeting to be adjourned. The
persons named as proxies will vote those proxies which they are entitled to vote
in favor of the Proposal,  in favor of such an adjournment,  and will vote those
proxies required to be voted against the Proposal, against any such adjournment.
A vote may be taken on the  Proposal in this proxy  statement  prior to any such
adjournment  if  sufficient  votes for its approval have been received and it is
otherwise  appropriate.  Any adjourned session or sessions may be held within 90
days  after the date set for the  original  Meeting  without  the  necessity  of
further notice.

COSTS OF THE SOLICITATION AND THE REORGANIZATION

All expenses of this  solicitation,  including  the cost of printing and mailing
this Proxy Statement and Prospectus,  will be borne by LifeSpan Growth Fund. Any
documents such as existing  prospectuses  or annual reports that are included in
that mailing will be a cost of the fund issuing the document. In addition to the
solicitation  of  proxies by mail,  proxies  may be  solicited  by  officers  of
LifeSpan  Growth Fund or officers and  employees of  OppenheimerFunds  Services,
personally or by telephone or telegraph;  any expenses so incurred will be borne
by  OppenheimerFunds  Services.  Proxies  may  also  be  solicited  by  a  proxy
solicitation  firm hired at LifeSpan  Growth  Fund's  expense for such  purpose.
Brokerage  houses,  banks and other  fiduciaries  may be  requested  to  forward
soliciting material to the beneficial owners of shares of LifeSpan Growth Fund

                                     -4-

<PAGE>



and to obtain authorization for the execution of proxies. For those services, if
any,  they will be  reimbursed  by  LifeSpan  Growth  Fund for their  reasonable
out-of-pocket expenses.

With respect to the  Reorganization,  LifeSpan Growth Fund and Disciplined Value
Fund  will  bear  the  cost  of  their   respective  tax  opinions.   Any  other
out-of-pocket  expenses  of  LifeSpan  Growth  Fund and  Disciplined  Value Fund
associated with the  Reorganization,  including  legal,  accounting and transfer
agent  expenses,  will be borne by LifeSpan  Growth Fund and  Disciplined  Value
Fund, respectively, in the amounts so incurred by each.

                             COMPARATIVE FEE TABLE

LifeSpan Growth Fund and  Disciplined  Value Fund each pay a variety of expenses
for management of their assets, administration, distribution of their shares and
other services,  and those expenses are reflected in each fund's net asset value
per share.  Shareholders pay other expenses directly, such as sales charges. The
following table is provided to help you compare the direct expenses of investing
in each class of LifeSpan  Growth Fund with the direct  expenses of investing in
each class of Disciplined Value Fund and the pro forma expenses of the surviving
fund after giving effect to the reorganization.

LIFESPAN GROWTH FUND

                                CLASS A           CLASS B           CLASS C
                                SHARES            SHARES            SHARES

SHAREHOLDER TRANSACTION EXPENSES
- -----------------------------------------------------------------------------
Maximum Sales Charge            5.75%             None              None
on Purchases (as a %
of offering price)
- -----------------------------------------------------------------------------
Maximum
Deferred Sales                  None(1)           5% in the(2)      1% if(2)
Charge (as a %                                    first year        shares
of the lower                                      declining         are
of the original                                   to 1% in          redeemed
purchase price                                    the sixth         within 12
or redemption                                     year and          months of
proceeds)                                         eliminated        purchase
                                                  thereafter
- -----------------------------------------------------------------------------
Maximum
Sales Charge on                 None              None              None
Reinvested Dividends
- -----------------------------------------------------------------------------
Exchange Fee                    None              None              None
- -----------------------------------------------------------------------------
Redemption Fee                  None(3)           None(3)           None(3)





                                     -5-

<PAGE>




DISCIPLINED VALUE FUND AND DISCIPLINED VALUE FUND AS SURVIVING FUND

                                CLASS A           CLASS B           CLASS C
                                SHARES            SHARES            SHARES

SHAREHOLDER TRANSACTION EXPENSES
- ----------------------------------------------------------------------------
Maximum Sales Charge            5.75%             None              None
on Purchases (as a %
of offering price)
- ----------------------------------------------------------------------------
Maximum
Deferred Sales                  None(1)           5% in the(2)      1% if(2)
Charge (as a %                                    first year        shares
of the lower                                      declining         are
of the original                                   to 1% in          redeemed
purchase price                                    the sixth         within 12
or redemption                                     year and          months of
proceeds)                                         eliminated        purchase
                                                  thereafter
- ----------------------------------------------------------------------------
Maximum
Sales Charge on                 None              None              None
Reinvested Dividends
- ----------------------------------------------------------------------------
Exchange Fee                    None              None              None
- ----------------------------------------------------------------------------
Redemption Fee                  None(3)           None(3)           None(3)

(1) If you  invest  more than $1  million  ($500,000  or more for  purchases  by
"Retirement  Plans," as defined in "Class A Contingent Deferred Sales Charge" in
each fund's Prospectus) in Class A shares, you may have to pay a sales charge of
up to 1% if you sell your shares within 12 calendar months (18 months for shares
purchased  prior to May 1, 1997) from the end of the calendar month during which
you purchased those shares.
(2) See "How to Buy  Shares - Buying  Class B Shares"  and "How to Buy  Shares -
Buying Class C Shares" in each Fund's Prospectus.
(3) There is a $10 transaction fee for redemption proceeds paid by Federal Funds
wire,  but not for  redemptions  paid by  check  or ACH  wire  transfer  through
AccountLink.

ANNUAL FUND OPERATING EXPENSES.  The following tables are the operating expenses
of Class A, Class B and Class C shares of LifeSpan Growth Fund and the operating
expenses  of Class A, Class B, Class C and Class Y shares of  Disciplined  Value
Fund.  These  tables are based on expenses  for the twelve  month  period  ended
October 31,  1997.  The pro forma  information  is an  estimate of the  business
expenses of the  surviving  Disciplined  Value Fund after  giving  effect to the
reorganization.  All amounts  shown are a percentage of net assets of each class
of each of the funds.



                                           -6-

<PAGE>

<TABLE>
<CAPTION>


                LIFESPAN GROWTH FUND       DISCIPLINED VALUE FUND
                CLASS A CLASS B CLASS C    CLASS A    CLASS B    CLASS C    CLASS Y
<S>             <C>     <C>     <C>        <C>        <C>        <C>        <C>
Management Fees  0.85%  0.85%    0.85%      0.58%     0.58%      0.58%      0.58%
12b-1 Plan Fees  0.25%  1.00%    1.00%      0.25%     0.99%      0.99%      0.00%
Other Expenses   0.40%  0.42%    0.44%      0.24%     0.27%      0.29%      0.20%
Total Fund Operating
 Expenses        1.50%  2.27%    2.29%      1.07%     1.84%      1.86%      0.78%
</TABLE>


                           PRO FORMA SURVIVING DISCIPLINED VALUE FUND
                        CLASS A       CLASS B         CLASS C         CLASS Y

Management Fees         0.57%         0.57%           0.57%            0.57%
12b-1 Plan Fees         0.25%         0.99%           0.99%            0.00%
Other Expenses          0.24%         0.28%           0.29%            0.18%
Total Fund Operating
  Expenses              1.06%         1.84%           1.85%            0.75%

The 12b-1 fees for Class A shares of LifeSpan Growth Fund and Disciplined  Value
Fund are  service  plan fees.  The  service  plan fees are a maximum of 0.25% of
average  annual net  assets of Class A shares of each  fund.  The 12b-1 fees for
Class B and Class C shares of each of the funds  are  Distribution  and  Service
Plan fees which include a service fee of 0.25% and an  asset-based  sales charge
of 0.75%.

EXAMPLES

To try and show the effect of the  expenses  on an  investment  over  time,  the
hypothetical  examples  shown  below have been  created.  Assume that you make a
$1,000  investment  in Class A,  Class B and Class C shares of  LifeSpan  Growth
Fund, or Class A, Class B, Class C and Class Y shares of Disciplined Value Fund,
or Class A, Class B, Class C and Class Y of the pro forma surviving  Disciplined
Value Fund and that the annual return is 5% and that the operating  expenses for
each fund are the ones  shown in the  chart  above.  If you were to redeem  your
shares at the end of each period shown below,  your  investment  would incur the
following expenses by the end of each period shown.

                                    1 YEAR     3 YEARS     5 YEARS     10 YEARS*

Oppenheimer LifeSpan Growth Fund
     Class A Shares                 $72        $102        $135        $226
     Class B Shares                 $73        $101        $142        $223
     Class C Shares                 $33        $ 72        $123        $263

Oppenheimer Disciplined Value Fund
     Class A Shares                 $68        $90         $113        $181
     Class B Shares                 $69        $88         $120        $177
     Class C Shares                 $29        $58         $101        $218
     Class Y Shares                 $ 8        $25         $ 43        $ 97

Pro Forma Surviving
Oppenheimer Disciplined Value Fund
     Class A Shares                 $68        $89         $113        $179

                                           -7-

<PAGE>



     Class B Shares                 $69        $88         $120        $177
     Class C Shares                 $29        $58         $100        $217
     Class Y Shares                 $ 8        $24         $ 42        $ 93

If you did not redeem your investment, it would incur the following expenses:



                                    1 YEAR     3 YEARS     5 YEARS     10 YEARS*

Oppenheimer LifeSpan Growth Fund
     Class A Shares                 $72        $102        $135        $226
     Class B Shares                 $23        $ 71        $122        $223
     Class C Shares                 $23        $ 72        $123        $263

Oppenheimer Disciplined Value Fund
     Class A Shares                 $68        $90         $113        $181
     Class B Shares                 $19        $58         $100        $177
     Class C Shares                 $19        $58         $101        $218
     Class Y Shares                 $ 8        $25         $ 43        $ 97

Pro Forma Surviving
Oppenheimer Disciplined Value Fund
     Class A Shares                 $68        $89         $113        $179
     Class B Shares                 $19        $58         $100        $177
     Class C Shares                 $19        $58         $100        $217
     Class Y Shares                 $ 8        $24         $ 42        $ 93

* In the first  example,  expenses  include the Class A initial sales charge and
the  applicable  Class B or Class C contingent  deferred  sales  charge.  In the
second example,  Class A expenses include the initial sales charge,  but Class B
and Class C expenses do not include contingent deferred sales charges. The Class
B expenses in years 7 through 10 are based on the Class A expenses  shown above,
because each of the funds automatically  converts your Class B shares into Class
A shares  after 6 years.  Long  term  Class B and C  shareholders  could pay the
economic  equivalent  of more than the maximum  front-end  sales charge  allowed
under  applicable  regulations,  because of the effect of the asset-based  sales
charge and contingent deferred sales charge. The automatic conversion of Class B
shares to Class A Shares is designed to minimize the  likelihood  that this will
occur.

The examples show the effect of expenses on an investment,  but are not meant to
state or predict  actual or expected  costs or investment  returns of the funds,
all of which may be more or less than the amounts shown.

                                   SYNOPSIS

The following is a synopsis of certain information  contained in or incorporated
by  reference  in  this  Proxy   Statement  and   Prospectus  and  presents  key
considerations  for  shareholders  of  LifeSpan  Growth  Fund to assist  them in
determining whether to approve the

                                     -8-

<PAGE>



Reorganization. This synopsis is only a summary and is qualified in its entirety
by the more detailed  information  contained in or  incorporated by reference in
this Proxy Statement and Prospectus and by the Reorganization  Agreement, a copy
of which is attached as Exhibit A hereto.  Shareholders  should carefully review
this Proxy  Statement and Prospectus and the  Reorganization  Agreement in their
entirety and, in particular,  the current  Prospectus of Disciplined  Value Fund
which accompanies this Proxy Statement and Prospectus and is incorporated herein
by reference.

PARTIES TO THE REORGANIZATION

LifeSpan Growth Fund and Disciplined Value Fund (collectively referred to herein
as the "funds") are  diversified  series of Oppenheimer  Series Fund,  Inc. (the
"Company")  which was  organized  in 1981 as a  Maryland  corporation  and is an
open-end management investment company.  Organized as a series fund, Oppenheimer
Series Fund, Inc. presently has five series,  including LifeSpan Growth Fund and
Disciplined Value Fund. Both LifeSpan Growth Fund and Disciplined Value Fund are
located  at Two World  Trade  Center,  New York,  NY  10048-0203.  The  Company,
including the two Funds,  is governed by Articles of  Incorporation  and By-Laws
and is managed  under the  direction  of a Board of  Directors.  The  Company is
governed   by   applicable    Maryland   law   and   applicable   federal   law.
OppenheimerFunds,  Inc. (the "Manager") whose address is Two World Trade Center,
New York, New York  10048-0203,  acts as investment  advisor to LifeSpan  Growth
Fund and Disciplined Value Fund. Additional information about the parties is set
forth below.

SHARES TO BE ISSUED.  All  shareholders  of LifeSpan Growth Fund who own Class A
shares will  receive  Class A shares of  Disciplined  Value Fund in exchange for
their Class A shares of LifeSpan  Growth Fund.  Shareholders  of LifeSpan Growth
Fund who own Class B shares will  receive  Class B shares of  Disciplined  Value
Fund in exchange for their Class B shares of LifeSpan Growth Fund.  Shareholders
of LifeSpan  Growth Fund who own Class C shares will  receive  Class C shares of
Disciplined  Value Fund in exchange for their Class C shares of LifeSpan  Growth
Fund. The voting rights of shares of each fund are  substantially  the same. See
Rights of Shareholders below for more information.

THE REORGANIZATION

The Reorganization  Agreement provides for the transfer of substantially all the
assets of LifeSpan  Growth Fund to Disciplined  Value Fund in exchange for Class
A, Class B and Class C shares of Disciplined  Value Fund. The net asset value of
Disciplined  Value  Fund  Class  A,  Class B and  Class C shares  issued  in the
exchange will equal the value of the assets of LifeSpan  Growth Fund received by
Disciplined  Value Fund. In conjunction with the Closing of the  Reorganization,
presently scheduled for June 12, 1998, LifeSpan

                                     -9-

<PAGE>



Growth  Fund  will  distribute  the  Class  A,  Class B and  Class C  shares  of
Disciplined  Value Fund received by LifeSpan  Growth Fund on the Closing Date to
holders  of Class  A,  Class B and  Class C  shares  of  LifeSpan  Growth  Fund,
respectively. As a result of the Reorganization, each Class A, Class B and Class
C  LifeSpan  Growth  Fund  shareholder  will  receive  the  number  of full  and
fractional  Disciplined  Value  Fund  Class A,  Class B and Class C shares  that
equals in value such  shareholder's pro rata interest in the assets  transferred
to  Disciplined  Value Fund as of the Valuation  Date.  The Board has determined
that the interests of existing  LifeSpan  Growth Fund  shareholders  will not be
diluted as a result of the Reorganization. For the reasons set forth below under
"The Reorganization - Reasons for the Reorganization," the Board,  including the
directors who are not "interested  persons" of Oppenheimer Series Fund, Inc., as
that  term  is  defined  in  the  Investment   Company  Act,  (the  "Independent
Directors"),  has concluded that the  Reorganization is in the best interests of
LifeSpan  Growth  Fund  and its  shareholders  and  recommends  approval  of the
Reorganization by LifeSpan Growth Fund  shareholders.  If the  Reorganization is
not approved, LifeSpan Growth Fund will continue in existence and the Board will
determine whether to pursue alternative actions.

REASONS FOR THE REORGANIZATION

The Manager proposed to the Board a reorganization  of LifeSpan Growth Fund into
Disciplined  Value Fund so that  shareholders of LifeSpan Growth Fund may become
shareholders of a larger but similar fund,  which after such  reorganization  is
anticipated to have lower expenses.  The Board considered pro forma  information
which indicated the expense ratio of a combined fund would be lower than that of
LifeSpan Growth Fund, as shown above under "Comparative Fee Table." In addition,
the Board also considered information with respect to the historical performance
of LifeSpan Growth Fund (since its inception in May, 1995) and Disciplined Value
Fund (for the ten year period ending October 31, 1997).  For the one year period
ended October 31, 1997,  the average  annual returns for all classes were higher
for Disciplined Value Fund than for LifeSpan Growth Fund.

The  Board  also  considered  that  the  Reorganization  would  be  a  tax  free
reorganization,  and there would be no sales  charge  imposed in  effecting  the
Reorganization.  The Board concluded that the Reorganization would not result in
dilution to shareholders of LifeSpan Growth Fund.

TAX CONSEQUENCES OF THE REORGANIZATION

In the opinion of KPMG Peat Marwick  LLP,  tax adviser to LifeSpan  Growth Fund,
the Reorganization will qualify as a tax-free  reorganization for Federal income
tax purposes. As a result, it is

                                     -10-

<PAGE>



expected  that no gain or loss  will be  recognized  by either  fund,  or by the
shareholders  of either fund for Federal  income tax purposes as a result of the
Reorganization.  For  further  information  about  the tax  consequences  of the
Reorganization, see "Approval of the Reorganization - Tax Aspects" below.



INVESTMENT OBJECTIVES AND POLICIES

The investment  objectives of the Funds are  substantially  the same.  Each Fund
seeks  long-term  capital  appreciation.   LifeSpan  Growth  Fund  is  an  asset
allocation  fund,  investing its assets among two broad classes of  investments,
stocks and bonds.  Disciplined  Value Fund will invest primarily in stocks under
normal  market  conditions,  using  a  quantitative  value  oriented  investment
discipline in combination with fundamental  securities analysis.  The investment
policies of each Fund are substantially  similar. The only major differences are
that LifeSpan  Growth Fund may lend its portfolio  securities for the purpose of
increasing income or raising cash for liquidity  purposes.  LifeSpan Growth Fund
may invest up to 20% of its assets in debt securities, whereas Disciplined Value
Fund may invest up to 10% of its assets in debt  securities.  Disciplined  Value
Fund may not purchase  securities rated below B by Moody's or Standard & Poor's,
whereas  LifeSpan  Growth  Fund may  invest in  securities  rated as low as C by
Moody's  or D by  Standard  & Poor's,  and  LifeSpan  Growth  Fund may invest in
emerging market countries,  CMOs and REMICs,  stripped securities,  asset-backed
securities,  structured  notes,  inverse  floating rate  instruments  and small,
unseasoned companies.

INVESTMENT ADVISORY AND DISTRIBUTION AND SERVICE PLAN FEES

INVESTMENT  ADVISORY FEES.  The terms and conditions of the investment  advisory
agreement of each Fund are  similar.  Both funds  obtain  investment  management
services from the Manager. The management fee is computed on the net asset value
of each fund as of the close of  business  each day and  payable  monthly at the
following  annual rates:  LifeSpan  Growth Fund pays 0.85% of the average annual
net assets up to $250  million and 0.75% of average  annual net assets in excess
of $250 million. Disciplined Value Fund pays 0.625% of the first $300 million of
average annual net assets,  0.50% of the next $100 million of average annual net
assets and 0.45% of average  annual  net assets in excess of $400  million.  For
LifeSpan Growth Fund, the Manager employs  Sub-Advisers,  Babson-  Stewart,  BEA
Associates  ("BEA") and Pilgrim  Baxter & Associates,  Ltd.  ("Pilgrim-Baxter").
Under its Investment Subadvisory Agreements with Babson-Stewart the Manager pays
Babson-Stewart  a monthly fee, at the following  annual rates,  which decline as
the average annual net assets of that portion of the respective Fund's component
allocated  to  Babson-Stewart  grow:  0.75% of the first $10  million of average
daily net assets allocated to Babson-Stewart,

                                     -11-

<PAGE>



0.625% of the next $15 million, 0.50% of the next $25 million and 0.375% of such
assets in excess of $50 million.  Under its  Investment  Subadvisory  Agreements
with BEA, the Manager pays BEA a quarterly  fee at the  following  annual rates,
which decline as the combined  average daily net assets of the Fund allocated to
BEA grow:  0.45% of the first $25 million of combined  average  daily net assets
allocated to BEA,  0.40% of the next $25 million,  0.35% of the next $50 million
and  0.25% of the  assets  in  excess  of $100  million.  Under  its  Investment
Subadvisory  Agreements with Pilgrim  Baxter,  the Manager pays Pilgrim Baxter a
monthly fee equal to 0.60% of the combined  average daily net assets of the Fund
allocated to Pilgrim Baxter.

DISTRIBUTION AND SERVICE FEES.  LifeSpan Growth Fund and Disciplined  Value Fund
have  both  adopted  Service  Plans for their  respective  Class A shares.  Both
Service Plans provide for  reimbursement to the Distributor for a portion of its
costs  incurred in  connection  with the  personal  service and  maintenance  of
accounts that hold Class A shares. Under each plan, payment is made at an annual
rate that may not  exceed  0.25% of the  average  annual  net  assets of Class A
shares of each of the funds.

LifeSpan Growth Fund and Disciplined  Value Fund have adopted  Distribution  and
Service Plans (the "Plans") for Class B and Class C shares under which each fund
pays the Distributor for its services in connection  with  distributing  Class B
and Class C shares and servicing  accounts.  Under each Plan,  the funds pay the
Distributor  an  asset-based  sales  charge of 0.75% per annum of Class B shares
outstanding for six years or less and on Class C shares.  The funds also pay the
Distributor  a service fee of 0.25% per annum,  each of which is computed on the
average  annual  net assets of Class B and Class C shares  determined  as of the
close of each regular  business day of each fund. The  Distribution  and Service
Plans for Class B and Class C shares  of  LifeSpan  Growth  Fund and Class B and
Class C shares of Disciplined Value Fund are compensation plans whereby payments
by the funds are made at a fixed rate as specified above and the funds' payments
are not  limited  to  reimbursing  the  Distributor's  costs.  The  terms of the
respective Plans for each Fund are substantially the same.

PURCHASES, EXCHANGES AND REDEMPTIONS

Both  LifeSpan  Growth  Fund  and  Disciplined   Value  Fund  are  part  of  the
OppenheimerFunds   complex  of  mutual  funds.  The  procedures  for  purchases,
exchanges and  redemptions  of shares of the funds are  substantially  the same.
Shares of either  fund may be  exchanged  for  shares of the same class of other
Oppenheimer funds offering such shares.

Both  LifeSpan  Growth Fund and  Disciplined  Value Fund have a maximum  initial
sales charge of 5.75% on Class A shares.  Investors  who  purchase  more than $1
million  ($500,000  or more for  purchases by  "Retirement  Plans" as defined in
"Class A Contingent Deferred Sales Charge" in each fund's Prospectus) in Class A
shares pay no initial

                                     -12-

<PAGE>



sales  charge but may have to pay a sales  charge of up to 1% if shares are sold
within 12 calendar months (18 months for shares  purchased prior to May 1, 1997)
from the end of the calendar  month during which shares are  purchased.  Each of
the funds has a  contingent  deferred  sales  charge  imposed on the proceeds of
Class B shares redeemed within six years of buying them. The contingent deferred
sales charge ("CDSC") varies depending on how long you hold your shares. Each of
the funds has a contingent  deferred  sales charge of 1% imposed on the proceeds
of Class C shares if redeemed within twelve months of their  purchase.  Class A,
Class  B  and  Class  C  shares  of  Disciplined  Value  Fund  received  in  the
Reorganization will be issued at net asset value,  without a sales charge and no
CDSC  will  be  imposed  on  any  LifeSpan  Growth  Fund  shares  exchanged  for
Disciplined Value Fund shares as a result of the  Reorganization.  However,  any
CDSC which  applies to LifeSpan  Growth  Fund  shares will  continue to apply to
Disciplined Value Fund shares received in the Reorganization. Services available
to shareholders of both funds include  purchase and redemption of shares through
OppenheimerFunds  AccountLink  and PhoneLink (an  automated  telephone  system),
telephone  redemptions,  and exchanges by telephone to other  Oppenheimer  funds
which offer Class A, Class B and Class C shares,  and  reinvestment  privileges.
Please see "Shareholder  Services," below and each fund's Prospectus for further
information.

                            PRINCIPAL RISK FACTORS

In evaluating  whether to approve the  Reorganization  and invest in Disciplined
Value Fund,  shareholders  should carefully consider the following risk factors,
the  information  set forth in this Proxy  Statement and Prospectus and the more
complete description of risk factors set forth in the documents  incorporated by
reference  herein,  including the Prospectuses of the funds and their respective
Statements of Additional Information.

STOCK INVESTMENT RISKS. All investments carry risks to some degree, whether they
are risks that market prices of the investment  will fluctuate (this is known as
"market  risk")  or  that  the  underlying  issuer  will  experience   financial
difficulties and may default on its obligation  under a fixed-income  investment
to pay  interest  and repay  principal  (this is referred to as "credit  risk").
These  general  investment  risks  affect the value of both funds'  investments,
their investment performance, and the prices of their shares. Because both funds
usually  invest a  substantial  portion of their assets in stocks,  the value of
each fund's  portfolio  will be affected by changes in the stock  markets.  This
market  risk will  affect  each  fund's net asset  values per share,  which will
fluctuate as the values of the fund's portfolio securities change. Not all stock
prices  change  uniformly  or at the same time,  and other  factors can affect a
particular stock's price (for example,  poor earnings reports by an issuer, loss
of major customers, major

                                     -13-

<PAGE>



litigation against an issuer, or changes in government  regulations affecting an
industry).  Not all of these  factors can be  predicted.  Changes in the overall
market  conditions  and  prices  can occur at any time.  Because of the types of
companies each fund invests in and the investment techniques used, some of which
may be  speculative,  both  funds  are  designed  for  those  investors  who are
investing for the long-term and who are willing to accept  greater risks of loss
of their capital in the hope of achieving  capital  appreciation.  Investing for
capital appreciation entails the risk of loss of all or part of your principal.

INTEREST RATE RISKS.  Debt securities are subject to changes in their values due
to changes in prevailing  interest rates.  When prevailing  interest rates fall,
the value of already-issued debt securities  generally rise. When interest rates
rise,  the values of  already-issued  debt  securities  generally  decline.  The
magnitude  of these  fluctuations  will often be greater  for  longer-term  debt
securities than shorter-term debt securities. Each Fund's share prices can go up
or down when  interest  rates change  because of the effect of the change on the
value of the fund's  portfolio of debt  securities.  Like LifeSpan  Growth Fund,
Disciplined  Value  Fund has the  ability  to  invest  up to 10% of it assets in
high-yield  securities  however,  as of its fiscal year ended  October 31, 1997,
Disciplined  Value Fund held [no] high-yield  securities.  If Disciplined  Value
Fund were to invest in high-yield securities, those securities may be subject to
greater market  fluctuation  and risk of loss of income and principal than lower
yielding,  investment grade securities.  There are additional risks of investing
in lower grade  securities  that are described in the prospectus for Disciplined
Value Fund.

FOREIGN SECURITIES RISKS. There are risks of foreign investing that increase the
risk of investing in both LifeSpan Growth Fund and in Disciplined Value Fund and
also increase the operating  costs of both funds.  For example,  foreign issuers
are not required to use  generally-accepted  accounting  principles.  If foreign
securities are not registered for sale in the U.S. under U.S.  securities  laws,
the issuer  does not have to comply  with the  disclosure  requirements  of U.S.
laws,  which are  generally  more  stringent  than foreign  laws.  The values of
foreign  securities  investments  will be affected by other  factors,  including
exchange control regulations or currency blockage and possible  expropriation or
nationalization  of  assets.  There are risks of  changes  in  foreign  currency
values.  Because  LifeSpan Growth Fund and  Disciplined  Value Fund may purchase
securities  denominated  in foreign  currencies,  a change in value of a foreign
currency  against the U.S.  dollar  will  result in a change in the U.S.  dollar
value of securities of that Fund denominated in that currency. There may also be
changes in  governmental  administration  or economic or monetary  policy in the
U.S. or abroad that can affect foreign investing.  In addition,  it is generally
more difficult to obtain

                                     -14-

<PAGE>



court  judgments  outside  the  United  States if that Fund has to sue a foreign
broker or  issuer.  Additional  costs may be  incurred  because  foreign  broker
commissions  are  generally  higher than U.S.  rates,  and there are  additional
custodial costs associated with holding securities abroad. If assets of LifeSpan
Growth Fund or  Disciplined  Value Fund are held abroad,  the countries in which
they are held and the sub-custodians holding them must be approved by the Fund's
Board of  Directors if such  approval is required  under SEC  regulations.  More
information  about the risks and  potential  rewards  of  investing  in  foreign
securities  is contained  in the  Statement of  Additional  Information  of both
funds.

DERIVATIVE  INVESTMENTS  RISKS.  Both funds may invest in a number of  different
kinds of "derivative"  investments.  In general, a "derivative"  investment is a
specially designed  investment whose performance is linked to the performance of
another  investment or security.  The company issuing the instrument may fail to
pay the amount due on the  maturity  of the  instrument.  Also,  the  underlying
investment  or security on which the  derivative  is based,  and the  derivative
itself,  may not  perform  the way  the  Manager  expected  it to  perform.  The
performance of derivative investments may also be influenced by stock market and
interest rate changes in the U.S. and abroad. All of this can mean that the fund
may realize less principal or income from the investment than expected.  Certain
derivative  investments  held by the  funds may  trade in the  over-the  counter
market and may be illiquid.

HEDGING  INSTRUMENTS RISKS. Each fund may use certain hedging  instruments.  The
use of hedging  instruments  requires special skills and knowledge of investment
techniques  that are  different  than  what is  required  for  normal  portfolio
management. If the Manager uses a hedging instrument at the wrong time or judges
market conditions incorrectly,  hedging strategies may reduce the fund's return.
Losses  could also be  experienced  if the  prices of its  futures  and  options
positions  were not  correlated  with its other  investments  or if it could not
close out a  position  because of an  illiquid  market for the future or option.
Options trading  involves the payment of premiums and has special tax effects on
the funds. There are also special risks in particular hedging  strategies.  If a
covered call written by the fund is exercised on a security  that has  increased
in value,  the fund will be required to sell the  security at the call price and
will not be able to realize any profit if the  security  has  increased in value
above the call  price.  The use of  forward  contracts  may reduce the gain that
would otherwise result from a change in the relationship between the U.S. dollar
and a foreign  currency.  To limit its  exposure  in foreign  currency  exchange
contracts, each Fund limits its exposure to the amount of its assets denominated
in foreign  currency.  Interest  rate  swaps are  subject to risk that the other
party will fail to meet its obligations (or that the underlying issuer will fail
to pay on time), as well as interest rate risks. A Fund could

                                     -15-

<PAGE>



be obligated to pay more under its swap  agreements than it received under them,
as a result of interest rate changes.

LOWER-GRADE  SECURITIES  RISKS.  The  Funds  can  invest  in  high-yield,  below
investment grade debt securities  (including both rated and unrated securities).
These "lower-grade" securities are commonly known as "junk bonds". All corporate
debt  securities  (whether  foreign or  domestic)  are subject to some degree of
credit risk. High yield, lower-grade securities, whether rated or unrated, often
have  speculative  characteristics  and  special  risks  that make them  riskier
investments  than investment  grade  securities.  They may be subject to greater
market  fluctuations  and  risk of loss  of  income  and  principal  than  lower
yielding,  investment grade  securities.  There may be less of a market for them
and  therefore  they may be harder to sell at an  acceptable  price.  There is a
relatively greater possibility that the issuer's earnings may be insufficient to
make the payments of interest and principal  due on the bonds.  The issuer's low
creditworthiness  may  increase  the  potential  for its  insolvency.  During an
economic  downturn,  lower-grade  securities  might  decline  in value more than
investment grade  securities.  For foreign  lower-grade  debt securities,  these
risks are in addition to the risks of investing in foreign securities, described
above.  These risks mean that the Fund may not achieve the expected  income from
lower-grade  securities,  and that the Fund's  net asset  value per share may be
affected by declines in value of these securities.

EMERGING  MARKETS RISKS.  Investments in emerging  market  countries may involve
risks  in  addition  to  those  identified  above  for  investments  in  foreign
securities.  Securities  issued by emerging  market  countries  and by companies
located in those countries may be subject to extended settlement periods,  and a
Fund might not receive  principal and/or income on a timely basis. Its net asset
values could be affected.  Emerging  market  countries  may have  smaller,  less
well-developed  markets  and  exchanges;  there may be a lack of  liquidity  for
emerging market  securities;  interest rates and foreign currency exchange rates
may be more volatile;  sovereign  limitations on foreign investments may be more
likely to be imposed;  there may be significant balance of payment deficits; and
their  economies and markets may respond in a more  volatile  manner to economic
changes than those of developed countries.

                        APPROVAL OF THE REORGANIZATION
                                (THE PROPOSAL)

REASONS FOR THE REORGANIZATION

At a meeting of the Board of Directors of  Oppenheimer  Series Fund,  Inc.  (the
"Board") held December 11, 1997, the Directors reviewed and discussed  materials
relevant to the proposed  Reorganization.  The Board,  including the Independent
Directors, unanimously

                                     -16-

<PAGE>



approved the  Reorganization  and recommended to shareholders of LifeSpan Growth
Fund that they approve the Reorganization. Both funds offer Class A, Class B and
Class C shares and the terms and conditions of their offer, sale, redemption and
exchange, distribution arrangements, expenses borne separately by each class and
other related matters are  essentially the same. The Board  considered that this
will facilitate an exchange. In the reorganization, Class A, Class B and Class C
shareholders  of LifeSpan  Growth Fund will receive Class A, Class B and Class C
shares, respectively, of Disciplined Value Fund.

In considering the proposed Reorganization, the Board reviewed information which
demonstrated  that  LifeSpan  Growth  Fund is a much  smaller  fund,  with $59.9
million in net assets as of October 31, 1997. In comparison,  Disciplined  Value
Fund had  $556.3  million  of net  assets  as of  October  31,  1997.  It is not
anticipated that LifeSpan Growth Fund will increase substantially in size in the
near future. After the reorganization,  the shareholders of LifeSpan Growth Fund
will be  shareholders  of a larger fund and will likely  incur lower  operating,
transfer  agency  and  other  expenses.  Thus  economies  of scale  may  benefit
shareholders of LifeSpan Growth Fund.

Among several other factors,  the Board focused on the investment  objectives of
the  two  funds.  Oppenheimer  LifeSpan  Growth  Fund  seeks  long-term  capital
appreciation.   It  invests  in  strategically  allocated  portfolio  consisting
primarily of stocks. Current income is not a primary consideration.  Disciplined
Value Fund seeks  long-term  growth of capital by investing  primarily in common
stocks  with low  price-earnings  ratios and  better-than-anticipated  earnings.
Realization of current income is a secondary consideration for Disciplined Value
Fund. Both funds are expected to invest a substantial portion of their assets in
stocks. The investment  techniques and strategies for the funds are similar with
respect to purchasing equity securities, debt securities,  derivatives,  hedging
instruments,  illiquid  securities,  convertible  securities,  and  warrants and
rights.  The only  major  differences  between  the  Funds  regarding  permitted
investments is LifeSpan Growth Fund has the ability to invest in mortgage-backed
securities,   collateralized  mortgage  obligations  ("CMOs")  and  real  estate
mortgage  investment  conduits  ("REMICs")  (including  CMOs and REMICs that are
stripped);  asset-backed securities;  structural notes and inverse floating rate
instruments and small, unseasoned companies.  LifeSpan Growth Fund may also lend
its portfolio  securities  for the purpose of increasing  income or raising cash
for  liquidity  purposes.  Accordingly,  the Board  determined  that  investment
objectives and techniques were comparable.

The  Board,  in  reviewing  financial  information,  considered  the  investment
advisory  fee rate of both funds  (also  known as the  "management  fee  rate").
LifeSpan Growth Fund's management fee for

                                     -17-

<PAGE>



its fiscal year ended  October  31, 1997 was 0.85% of average  annual net assets
for Class A, Class B and Class C shares. The management fee rates of Disciplined
Value Fund are 0.625% of the first $300  million of average  annual net  assets;
0.50% of the next $100 million and 0.45% of average  annual net assets in excess
of $400 million.  Disciplined  Value Fund's  management  fee for the fiscal year
ended  October 31, 1997 was 0.58% of the average  annual net assets for Class A,
Class B and Class C shares.  The  management fee rate for each Fund is discussed
under  "Investment  Advisory and  Distribution and Service Plan Fees," above. If
the two funds were combined, shareholders of Disciplined Value Fund would have a
reduced  management fee of approximately  0.57% for Class A, Class B and Class C
shares.  The Board  considered pro forma  information  which  indicated that the
expense ratio of a combined fund would  therefore be lower than that of LifeSpan
Growth Fund.

In addition to the above, the Board also considered  information with respect to
the historical  performance of LifeSpan Growth Fund and Disciplined  Value Fund,
including  the  performance  information  contained  in  Exhibit B to this Proxy
Statement.  During  the  time  period  that  LifeSpan  Growth  Fund  has been in
existence,  its  performance  has been well below the performance of Disciplined
Value Fund.

The Board also considered that the  Reorganization  is expected to be a tax free
reorganization,  and there would be no sales  charge  imposed in  effecting  the
Reorganization.  The Board concluded that the Reorganization would not result in
a dilution of the interests of existing shareholders of LifeSpan Growth Fund.

THE REORGANIZATION

The Reorganization  Agreement (a copy of which is set forth in full as Exhibit A
to this Proxy  Statement and  Prospectus)  contemplates a  reorganization  under
which (i) all of the assets of LifeSpan Growth Fund (other than the cash reserve
described  below (the "Cash  Reserve") will be transferred to Disciplined  Value
Fund in exchange  for Class A, Class B and Class C shares of  Disciplined  Value
Fund, (ii) these shares will be distributed  among the  shareholders of LifeSpan
Growth  Fund  in  complete  liquidation  of  LifeSpan  Growth  Fund,  (iii)  the
outstanding  shares of LifeSpan Growth Fund will be canceled.  Disciplined Value
Fund will not  assume  any of  LifeSpan  Growth  Fund's  liabilities  except for
portfolio   securities   purchased   which  have  not  settled  and  outstanding
shareholder redemption and dividend checks.

The result of  effectuating  the  Reorganization  would be that: (i) Disciplined
Value Fund will add to its gross assets all of the assets (net of any  liability
for portfolio securities  purchased but not settled and outstanding  shareholder
redemption  and  dividend  checks) of  LifeSpan  Growth Fund other than its Cash
Reserve; and

                                     -18-

<PAGE>



(ii) the shareholders of LifeSpan Growth Fund as of the close of business on the
Closing  Date will  become  shareholders  of either  Class A, Class B or Class C
shares of Disciplined Value Fund.

Shareholders of LifeSpan Growth Fund who vote their Class A, Class B and Class C
shares in favor of the Reorganization will be electing in effect to redeem their
shares  of  LifeSpan  Growth  Fund (at net  asset  value on the  Valuation  Date
referred  to below  under  "Method of  Carrying  Out the  Reorganization  Plan,"
calculated  after  subtracting  the Cash  Reserve)  and reinvest the proceeds in
Class A, Class B or Class C shares of Disciplined  Value Fund at net asset value
without sales charge and without recognition of taxable gain or loss for Federal
income tax purposes (see "Tax Aspects of the  Reorganization"  below).  The Cash
Reserve  is that  amount  retained  by  LifeSpan  Growth  Fund  which is  deemed
sufficient  in the  discretion  of the Board for the  payment  of: (a)  LifeSpan
Growth Fund's expenses of liquidation, and (b) its liabilities, other than those
assumed by Disciplined  Value Fund.  LifeSpan Growth Fund and Disciplined  Value
Fund  will  bear  all  of  their   respective   expenses   associated  with  the
Reorganization,   as  set  forth  under  "Costs  of  the  Solicitation  and  the
Reorganization"  above.  Management estimates that such expenses associated with
the  Reorganization  to be  borne  by  LifeSpan  Growth  Fund  will  not  exceed
$32,217.00.  Liabilities  as of the date of the  transfer of assets will consist
primarily of accrued but unpaid  normal  operating  expenses of LifeSpan  Growth
Fund,  excluding  the cost of any  portfolio  securities  purchased  but not yet
settled and outstanding  shareholder redemption and dividend checks. See "Method
of Carrying Out the Reorganization Plan" below.

The Reorganization  Agreement provides for coordination  between the funds as to
their respective  portfolios so that, after the closing,  Disciplined Value Fund
will be in compliance with all of its investment  policies and restrictions.  In
that  regard,  the  Manager  does not  anticipate  selling  more than 50% of the
existing securities in the LifeSpan Growth Fund portfolio.  LifeSpan Growth Fund
will   recognize   capital  gain  or  loss  on  any  sales  made  prior  to  the
Reorganization pursuant to this paragraph.

TAX ASPECTS OF THE REORGANIZATION

Immediately  prior  to the  Valuation  Date  referred  to in the  Reorganization
Agreement, LifeSpan Growth Fund will pay a dividend or dividends which, together
with all previous  dividends,  will have the effect of  distributing to LifeSpan
Growth Fund's  shareholders  all of LifeSpan  Growth Fund's  investment  company
taxable  income  for  taxable  years  ending  on or  prior to the  Closing  Date
(computed without regard to any deduction for dividends paid) and all of its net
capital  gain,  if any,  realized  in  taxable  years  ending on or prior to the
Closing Date (after  reduction  for any available  capital loss  carry-forward).
Such dividends will be included in

                                     -19-

<PAGE>



the taxable income of LifeSpan Growth Fund's shareholders as ordinary income and
capital gain, respectively.

The  exchange  of the assets of  LifeSpan  Growth  Fund for Class A, Class B and
Class C shares of Disciplined Value Fund and the assumption by Disciplined Value
Fund of certain  liabilities of LifeSpan  Growth Fund is intended to qualify for
Federal income tax purposes as a tax-free reorganization under Section 368(a)(1)
of the Internal  Revenue Code of 1986, as amended (the "Code").  LifeSpan Growth
Fund has  represented  to KPMG Peat Marwick LLP, tax adviser to LifeSpan  Growth
Fund, that there is no plan or intention by any Fund  shareholder who owns 5% or
more of LifeSpan  Growth  Fund's  outstanding  shares,  and, to LifeSpan  Growth
Fund's  best  knowledge,  there  is no  plan  or  intention  on the  part of the
remaining  LifeSpan  Growth  Fund  shareholders,  to redeem,  sell,  exchange or
otherwise  dispose  of a number of  Disciplined  Value  Fund Class A, Class B or
Class C shares  received in the  transaction  that would reduce  LifeSpan Growth
Fund  shareholders'  ownership of  Disciplined  Value Fund shares to a number of
shares having a value,  as of the Closing Date, of less than 50% of the value of
all the formerly  outstanding  LifeSpan  Growth Fund shares as of the same date.
Disciplined  Value Fund and LifeSpan  Growth Fund have each  represented to KPMG
Peat Marwick LLP,  that,  as of the Closing Date, it will qualify as a regulated
investment   company   or  will  meet  the   diversification   test  of  Section
368(a)(2)(F)(ii) of the Code.

As a condition to the closing of the Reorganization,  Disciplined Value Fund and
LifeSpan  Growth Fund will  receive the opinion of KPMG Peat  Marwick LLP to the
effect that, based on the Reorganization  Agreement,  the above representations,
existing provisions of the Code, Treasury Regulations issued thereunder, current
Revenue Rulings,  Revenue Procedures and court decisions, for Federal income tax
purposes:

1.   The transactions  contemplated by the Reorganization Agreement will qualify
     as a tax-free  "reorganization"  within the meaning of Section 368(a)(1)(c)
     of the Code.

2.   LifeSpan  Growth Fund and  Disciplined  Value Fund will each  qualify as "a
     party to a  reorganization"  within the  meaning  of Section  368(b) of the
     Code.

3.   No gain or loss will be recognized by the  shareholders  of LifeSpan Growth
     Fund  upon  the  distribution  of Class  A,  Class B or  Class C shares  of
     beneficial  interest  in  Disciplined  Value  Fund to the  shareholders  of
     LifeSpan Growth Fund pursuant to Section 354(a)(1) of the Code.

4.   Under  Section  361(a)  of the Code no gain or loss will be  recognized  by
     LifeSpan  Growth  Fund by reason of the  transfer  of its assets  solely in
     exchange for Class A, Class B or Class C

                                     -20-

<PAGE>



     shares of Disciplined Value Fund.

5.   Under  Section  1032(a) of the Code no gain or loss will be  recognized  by
     Disciplined  Value Fund by reason of the transfer of LifeSpan Growth Fund's
     assets  solely  in  exchange  for  Class A,  Class B or  Class C shares  of
     Disciplined Value Fund.

6.   The  shareholders  of LifeSpan Growth Fund will have the same tax basis and
     holding period for the shares of beneficial  interest in Disciplined  Value
     Fund that they receive as they had for LifeSpan Growth Fund stock that they
     previously  held,  pursuant to Sections  358(a)(1) and 1223(1) of the Code,
     respectively.

7.   The  securities  transferred by LifeSpan  Growth Fund to Disciplined  Value
     Fund  will  have the same tax  basis  and  holding  period  in the hands of
     Disciplined  Value Fund as they had for LifeSpan  Growth Fund,  pursuant to
     Sections 362(b) and 1223(2) of the Code, respectively.

Shareholders of LifeSpan Growth Fund should consult their tax advisors regarding
the  effect,  if  any,  of the  Reorganization  in  light  of  their  individual
circumstances. Since the foregoing discussion relates only to the Federal income
tax  consequences  of the  Reorganization,  shareholders of LifeSpan Growth Fund
should also consult  their tax advisors as to state and local tax  consequences,
if any, of the Reorganization.

CAPITALIZATION TABLE (UNAUDITED)

The table  below sets  forth the  capitalization  of  LifeSpan  Growth  Fund and
Disciplined Value Fund and indicates the pro forma combined capitalization as of
October 31, 1997 as if the Reorganization had occurred on that date.

OCTOBER 31, 1997
                                                                    NET ASSET
                                                  SHARES            VALUE
                                NET ASSETS        OUTSTANDING       PER SHARE

Oppenheimer LifeSpan Growth Fund
     Class A                    $53,318,387       3,900,030         $13.67
     Class B                    $ 5,390,939         395,745         $13.62
     Class C                    $ 1,209,468          89,402         $13.53

Oppenheimer Disciplined Value Fund
     Class A                    $371,809,526      15,948,062        $23.31
     Class B                    $ 83,290,683       3,572,324        $23.32
     Class C                    $ 10,243,102         444,018        $23.07
     Class Y                    $ 90,993,681       3,898,705        $23.34

Oppenheimer Disciplined Value Fund
(Pro Forma Surviving Fund)
     Class A                    $425,127,913      18,235,423        $23.31
     Class B                    $ 88,681,622       3,803,496        $23.32

                                     -21-

<PAGE>



     Class C                    $ 11,452,570         496,444        $23.07
     Class Y                    $ 90,993,681       3,898,705        $23.34


Reflects issuance of 2,287,361 of Class A shares,  231,172 of Class B shares and
52,426 of Class C shares of  Disciplined  Value Fund in a tax-free  exchange for
the net assets of LifeSpan Growth Fund, aggregating $59,918,794.

The pro forma  ratio of  expenses  to  average  annual net assets of the Class A
shares at  October  31,  1997  would  have been  1.06%.  The pro forma  ratio of
expenses  to average net assets of Class B shares at October 31, 1997 would have
been  1.84%.  The pro forma  ratio of  expenses to average net assets of Class C
shares at  October  31,  1997  would  have been  1.85%.  The pro forma  ratio of
expenses  to average net assets of Class Y shares at October 31, 1997 would have
been 0.75%.

                              COMPARISON BETWEEN
                             LIFESPAN GROWTH FUND
                          AND DISCIPLINED VALUE FUND

Information  about LifeSpan Growth Fund and Disciplined  Value Fund is presented
below.  Additional  information about Disciplined Value Fund is set forth in its
Prospectus,  accompanying  this Proxy Statement and  Prospectus,  and additional
information about both funds is set forth in documents that may be obtained upon
request of the  transfer  agent or upon  review at the  offices of the SEC.  See
"Additional Information - Public Information."



INVESTMENT OBJECTIVES AND POLICIES

DISCIPLINED VALUE FUND

Disciplined Value Fund seeks long term growth of capital by investing  primarily
in common  stocks  with low  price-earnings  ratios and  better-than-anticipated
earnings.  Realization  of current  income is a secondary  consideration.  Under
normal circumstances,  most of the fund's assets will be invested in stocks. The
Manager  chooses  stock  investments  for the fund  using a  quantitative  value
oriented  investment  discipline  in  combination  with  fundamental  securities
analysis.  A stock may have a low price-earnings  ratio (for example,  below the
price-earnings  ratio of the S&P 500 Index)  because it is  out-of-favor  in the
market. When an out-of-favor company demonstrates better earnings than what most
analysts were expecting,  this is referred to as a favorable  earnings surprise.
This may cause market analysts and investors to reevaluate the issuer's earnings
expectations  and the  price-earnings  multiple,  which  in turn may  cause  the
company's stock price to increase in

                                     -22-

<PAGE>



value.

As stocks with low  price-earnings  ratios and favorable  earnings surprises are
identified,   the  Manager  uses  fundamental   securities  analysis  to  select
individual stocks for the fund. When the price-earnings ratio of a stock held by
Disciplined  Value Fund moves  significantly  above the  multiple of the overall
stock market,  or the company reports a material  earnings  disappointment,  the
fund will normally sell the stock.

Disciplined  Value Fund may invest  the  remainder  of its net assets (up to 10%
under normal  circumstances)  in U.S.  Government  securities and corporate debt
obligations,  including  convertible  bonds,  which  may be rated as low as B by
Moody's Investors  Service,  Inc.  ("Moody's"),  Standard and Poor's Corporation
("Standard & Poor's"),  Fitch Investors  Service,  Inc., Duff & Phelps,  Inc. or
another nationally recognized statistical rating organization.  The Statement of
Additional  Information  for  Disciplined  Value Fund  contains a more  detailed
discussion  of the debt  securities  the fund may invest in. Under normal market
conditions,  the fund may  maintain up to 15% of its net assets in cash and cash
equivalent investments. When market conditions are unstable, the fund may invest
without limit in high-quality short-term debt securities for temporary defensive
purposes.

Consistent with the foregoing  policies,  Disciplined Value Fund may invest to a
limited degree in securities of foreign issuers, including issuers in developing
countries.

LIFESPAN GROWTH FUND

LifeSpan Growth Fund seeks long-term capital appreciation. Current income is not
a  primary  consideration.  The Fund is an asset  allocation  fund and  seeks to
achieve  its  investment  objective  by  allocating  its assets  among two broad
classes  of  investments-stocks  and  bonds.  The stock  class  includes  equity
securities  of  many  types.  The  bond  class  includes  several  varieties  of
fixed-income instruments. Allocating assets among different types of investments
allows  the  Fund  to  take  advantage  of  a  greater   variety  of  investment
opportunities  than funds that invest in only one asset class, but also subjects
the Fund to the risks of those types of investments.

The  Manager  has the ability to allocate  the Fund's  assets  within  specified
ranges. The Fund's normal allocation indicates the benchmark for its combination
of investments in each asset class over time. As market and economic  conditions
change, however, the Manager may adjust the asset mix between the stock and bond
classes within a normal asset  allocation range as long as the relative risk and
return  characteristics  of  the  the  Fund  remains  distinct  and  the  Fund's
investment  objective is preserved.  The Manager will review normal  allocations
between the stock and bond classes quarterly

                                     -23-

<PAGE>



and, if  necessary,  will  rebalance  the  investment  allocation  at that time.
Additional adjustments may be made if an asset allocation shift of 5% or more is
warranted.  For a further  discussion of the Fund's normal  allocation among the
various asset classes, please refer to the LifeSpan Growth Fund prospectus.

The  securities  in which  Disciplined  Value Fund and LifeSpan  Growth Fund may
invest are summarized  below.  Both funds invest in substantially the same types
of  securities  and  have  similar  restrictions.   When  investing  its  assets
Disciplined  Value  Fund may not  invest  more  than 5% of its  total  assets in
securities other than United States  Government or Government  agency securities
in any one issuer or more than 15% of the fund's  total  assets in any one bank.
LifeSpan  Growth Fund with respect to 75% of its total assets,  cannot  purchase
securities  of  an  issuer  (other  than  the  U.S.  Government,  its  agencies,
instrumentalities  or authorities),  if: (a) such purchase would cause more than
5% of the  Fund's  total  assets  taken at market  value to be  invested  in the
securities of such issuer; or (b) such purchase would at the time result in more
than 10% of the outstanding  voting  securities of such issuer being held by the
Fund.

PERMITTED INVESTMENTS BY BOTH LIFESPAN GROWTH FUND AND DISCIPLINED VALUE FUND

STOCK INVESTMENTS

Both  Disciplined  Value Fund and LifeSpan  Growth Fund each  normally  invest a
substantial  portion  of their  assets in stocks.  Therefore,  the value of each
fund's portfolio will be affected by changes in the stock markets. At times, the
stock markets can be volatile,  and stock prices can change substantially.  This
market  risk will  affect  each  fund's net asset  values per share,  which will
fluctuate as the values of each fund's portfolio securities change. The types of
securities each fund purchases are described below.  Each fund attempts to limit
market  risks by  diversifying  its  investments,  that  is,  by not  holding  a
substantial  amount of stock of any one company and by not investing too great a
percentage of the fund's assets in any one industry or sector.

Because  of the types of  securities  each fund  invests  in and the  investment
techniques each fund uses, some of which may be  speculative,  both  Disciplined
Value Fund and LifeSpan Growth Fund are designed for investors who are investing
for the long-term  and who are willing to accept  greater risks of loss of their
investment  in the  hope of  achieving  capital  appreciation.  Neither  fund is
intended for  investors  seeking  assured  income and  preservation  of capital.
Investing  for capital  appreciation  entails the risk of loss of all or part of
your  investment.  Because changes in securities  market prices can occur at any
time,  there is no  assurance  that  either  fund will  achieve  its  investment
objective, and when you redeem your shares, they may be worth more or less

                                     -24-

<PAGE>



than what you paid for them.



FOREIGN SECURITIES

Each Fund may purchase equity  securities  issued by foreign  companies and debt
securities issued or guaranteed by foreign  governments or their agencies.  Each
Fund may purchase  securities of companies located in any country,  developed or
underdeveloped. Investments in securities of issuers in underdeveloped countries
or countries that have emerging  markets  generally may offer greater  potential
for gain but involve more risk and may be considered  highly  speculative.  As a
matter of fundamental  policy,  Disciplined  Value Fund may not invest more than
10% of its total assets in foreign  securities,  except that the fund may invest
up to 25% of its total assets in foreign equity and debt securities that are (i)
issued,  assumed  or  guaranteed  by  foreign  governments  or  their  political
subdivisions  or  instrumentalities,  (ii)  assumed or  guaranteed  by  domestic
issuers, including Eurodollar securities, or (iii) issued, assumed or guaranteed
by foreign  issuers  having a class of securities  listed for trading on The New
York Stock Exchange.  Disciplined  Value Fund will hold foreign currency only in
connection with the purchase or sale of foreign securities.

There are special  risks in investing in foreign  securities.  More  information
about the risks and  potential  rewards of  investing in foreign  securities  is
described  above  in  the  section  entitled  "Principal  Risk  Factors"  and is
contained in each fund's respective Statement of Additional Information.

CONVERTIBLE SECURITIES

Both funds may invest in  convertible  securities.  Convertible  securities  are
bonds,  preferred  stocks and other securities that normally pay a fixed rate of
interest or dividend and give the owner the option to convert the security  into
common  stock.  While the value of  convertible  securities  depends  in part on
interest rate changes and the credit quality of the issuer,  the price will also
change based on the price of the underlying stock. While convertible  securities
generally have less potential for gain than common stock,  their income provides
a cushion  against the stock price's  declines.  They  generally pay less income
than  non-convertible  bonds. The Manager  generally  analyzes these investments
from the perspective of the growth  potential of the underlying stock and treats
them as "equity substitutes."

PORTFOLIO TURNOVER

A change in the securities held by either fund is known as "portfolio turnover."
Neither  Fund  ordinarily  engages in  short-term  trading to try to achieve its
objective.  For each fund's portfolio turnover rate, see "Financial  Highlights"
in each fund's respective Prospectus or Annual Report.

Portfolio turnover affects brokerage costs, dealer markups and other transaction
costs,  and may result in  Disciplined  Value Fund and  LifeSpan  Growth  Fund's
realization  of capital  gains or losses for tax  purposes.  It may also  affect
either fund's ability to qualify as a "regulated  investment  company" under the
Internal  Revenue  Code for tax  deductions  for  dividends  and  capital  gains
distributions  either fund pays to  shareholders.  Both funds qualified in their
last fiscal  year and intend to do so in the coming  year,  although  both funds
reserve the right not to qualify.

HEDGING

Both funds may  purchase and sell certain  kinds of futures  contracts,  forward
contracts,  and options on futures and broadly- based stock indices.  Both Funds
may write  covered  call  options  on  securities,  stock  indices  and  foreign
currency.  These are all referred to as "hedging instruments." Neither Fund uses
hedging instruments for speculative purposes, and both have limits on the use of
them,  described below. The hedging  instruments the funds may use are described
below and in greater  detail in "Other  Investment  Techniques  and  Strategies"
section in each fund's respective Statement of Additional Information.

Both funds may use hedging  instruments for a number of purposes.  Each fund may
do so to try to manage its  exposure to the  possibility  that the prices of its
portfolio  securities may decline,  or to establish a position in the securities
market as a temporary substitute for purchasing individual securities. Each fund
may do so to try to manage its  exposure to  changing  interest  rates.  Some of
these  strategies,  such as selling  futures,  buying puts and  writing  covered
calls,  hedge the fund's  portfolio  against price  fluctuations.  Other hedging
strategies, such as buying futures and call options, tend to increase the funds'
exposure to the securities market.

Forward contracts are foreign currency exchange contracts.  They are used to buy
or sell foreign  currency for future  delivery at a fixed price.  Both funds may
use them to try to "lock in" the U.S. dollar price of a security  denominated in
a foreign  currency  that the fund has  bought or sold,  or to  protect  against
possible  losses  from  changes in the  relative  values of the U.S.  dollar and
foreign  currency.  Both funds limit their exposure in foreign currency exchange
contracts in a  particular  foreign  currency to the amount of their  respective
assets denominated in that currency or in a closely-correlated currency. Writing
covered call options may also provide income to the funds for liquidity purposes
or to raise cash to distribute to shareholders.

                                     -25-

<PAGE>



Disciplined  Value  Fund may buy and  sell  futures  contracts  that  relate  to
broadly-based  stock indices  (these are referred to as Stock Index  Futures) or
foreign currencies (these are called Forward Contracts and are discussed below).

LifeSpan  Growth  Fund  may buy and  sell  futures  contracts  for  hedging  and
non-hedging   purposes   that  relate  to  (1)  foreign   currencies   ("Forward
Contracts"),   (2)  financial  indices,  such  as  U.S.  or  foreign  government
securities  indices,  corporate  debt  securities  indices or equity  securities
indices  (these are referred to as Financial  Futures),  and (3) interest  rates
(these are referred to as Interest Rate Futures).

Both funds may write (that is, sell) covered call  options.  Each call the funds
write must be "covered" while it is  outstanding.  That means the funds must own
the  investment  on which  the call was  written  or each  fund  must own  other
securities that are acceptable for the escrow  arrangements  required for calls.
The funds may write calls on futures  contracts  each fund owns, but these calls
must be  covered  by  securities  or other  liquid  assets  each  fund  owns and
segregated  to enable  it to  satisfy  each  fund's  obligations  if the call is
exercised.  After the Disciplined Value Fund writes a call, not more than 20% of
its assets may be subject to calls.  When either fund writes a call, it receives
cash  (called a  premium).  The call  gives the  buyer  the  ability  to buy the
investment  on which the call was written from the  respective  fund at the call
price during the period in which the call may be exercised.  If the value of the
investment  does not rise above the call price,  it is likely that the call will
lapse without being exercised,  while the respective fund keeps the cash premium
(and the investment).

LifeSpan  Growth Fund may  purchase  put options on Futures.  Buying a put on an
investment  gives the Fund the right to sell the  investment at a set price to a
seller  of a put on that  investment.  LifeSpan  Growth  Fund  may sell a put on
Futures, but only if the puts are covered by segregated liquid assets.

LifeSpan  Growth Fund may sell  covered  call options that are traded on U.S. or
foreign securities or commodity exchanges or are traded in the  over-the-counter
markets.  In the case of foreign currency  options,  they may be quoted by major
recognized  dealers in those  options.  Options  traded in the  over-the-counter
market  may  be  "illiquid,"   and  therefore  may  be  subject  to  the  Fund's
restrictions on illiquid investments.

Both Funds may enter into  interest  rate swaps both for  hedging and to seek to
increase  total  return.  In an interest  rate swap,  a Fund and  another  party
exchange  their  right to receive,  or their  obligation  to pay,  interest on a
security.  For example,  they may swap a right to receive floating rate interest
payments  for fixed  rate  payments.  The Fund  enters  into swaps only on a net
basis, which means the two payment streams are netted out, with the Fund

                                     -26-

<PAGE>



receiving  or  paying,  as the  case  may be,  only  the net  amount  of the two
payments. LifeSpan Growth Fund will segregate liquid assets of any type (such as
cash, U.S. Government,  equity or debt securities) to cover any amounts it could
owe under swaps that  exceed the amounts it is entitled to receive,  and it will
adjust that amount daily, as needed.

Hedging  instruments  can be volatile  investments and may involve special risks
which are described  above in the section  entitled  "Principal  Risk  Factors."
Options trading  involves the payment of premiums and has special tax effects on
either fund. There are also special risks in particular hedging strategies. If a
covered  call  written by either fund is  exercised  on an  investment  that has
increased in value,  either fund will be required to sell the  investment at the
call price and will not be able to  realize  any  profit if the  investment  has
increased in value above the call price.  In writing a put, there is a risk that
either fund may be required to buy the underlying  security at a disadvantageous
price.  The use of forward  contracts  may reduce the gain that would  otherwise
result from a change in the  relationship  between the U.S. dollar and a foreign
currency.  These risks are described in greater detail in each fund's respective
Statement of Additional Information.

LOANS OF PORTFOLIO SECURITIES

To  raise  cash  for  liquidity  purposes,  LifeSpan  Growth  Fund  may lend its
portfolio  securities  to  brokers,  dealers and other  financial  institutions.
LifeSpan  Growth Fund  restricts  loans of  securities  wherein the value of the
securities loaned exceeds 33 1/3% of the value of its total assets.  These loans
are subject to the conditions in LifeSpan Growth Fund's  Statement of Additional
Information.  LifeSpan  Growth  Fund  presently  does  not  intend  to lend  its
portfolio  securities,  but if it does, the value of the securities  borrowed is
not expected to exceed 5% of its total assets.

ILLIQUID AND RESTRICTED SECURITIES

Both of the funds may invest in illiquid and restricted securities.  Investments
may be illiquid  because of the absence of an active trading  market,  making it
difficult to value them or dispose of them  promptly at an acceptable  price.  A
restricted  security is one that has a contractual  restriction on its resale or
which cannot be sold publicly until it is registered under the Securities Act of
1933. The funds will not invest more than 10% of their net assets in illiquid or
restricted  securities  (each fund's Board may increase that limit to 15% of net
assets). The funds' percentage limitation on these investments does not apply to
certain  restricted  securities  that  are  eligible  for  resale  to  qualified
institutional purchasers.

                                     -27-

<PAGE>




DERIVATIVE INVESTMENTS

LifeSpan Growth Fund and  Disciplined  Value Fund can each invest in a number of
different  kinds of  "derivative  investments."  Each fund may use some types of
derivatives  for hedging  purposes,  and may invest in others because they offer
the potential for increased income. In general,  a "derivative  investment" is a
specially-designed  investment whose performance is linked to the performance of
another investment or security,  such as an option,  future,  index, currency or
commodity. The funds may not purchase or sell physical commodities; however, the
funds may  purchase  and sell  foreign  currency in hedging  transactions.  This
policy  also does not  prevent  the funds  from  buying or selling  options  and
futures contracts or from investing in securities or other instruments backed by
physical  commodities.  In the broadest sense,  derivative  investments  include
exchange-traded  options  and  futures  contracts  (please  refer to  "Hedging,"
above).  Investing in derivative  investments  involves  certain risks which are
described above in the section entitled "Principal Risk Factors."

REPURCHASE AGREEMENTS

Each of the funds may enter  into  repurchase  agreements.  Neither of the funds
will enter into  repurchase  agreements that will cause more than 10% of its net
assets to be subject to  repurchase  agreements  having a maturity  beyond seven
days (that limit may be increased to 15% by either fund's  Board).  However,  if
the vendor  fails to pay the resale price on the  delivery  date,  the funds may
experience costs in disposing of the collateral and losses if there is any delay
in doing so.

WARRANTS AND RIGHTS

Warrants  basically  are options to purchase  stock at set prices that are valid
for a limited period of time. Rights are similar to warrants but normally have a
short duration and are distributed  directly by the issuer to its  shareholders.
Both funds may invest up to 5% of their total assets in warrants or rights. That
5%  limitation  does not apply to  warrants  either  fund may acquire as part of
units with other  securities or that are attached to other  securities.  No more
than 2% of either  fund's total assets may be invested in warrants  that are not
listed on either The New York Stock Exchange or The American Stock Exchange. For
further details,  see "Warrants and Rights" in each fund's respective  Statement
of Additional Information.

"WHEN-ISSUED" AND DELAYED DELIVERY TRANSACTIONS

Both funds may purchase securities on a "when-issued" basis and may

                                     -28-

<PAGE>



purchase or sell securities on a "delayed  delivery" basis. These terms refer to
securities  that have been created and for which a market exists,  but which are
not available for immediate delivery. There may be a risk of loss to the fund if
the value of the security declines prior to the settlement date.

DEBT INSTRUMENTS

Under normal market  conditions,  Disciplined  Value Fund may invest some of its
assets  (normally up to 10%) in debt  securities.  LifeSpan Growth Fund may also
invest its assets (normally up to 20%) in debt securities. Some debt instruments
the funds may invest include the following:

U.S. GOVERNMENT SECURITIES

Both  funds  may  invest  in  U.S.  Government  Securities  which  include  debt
securities  issued or  guaranteed  by the U.S.  Government  or its  agencies and
instrumentalities.  Certain U.S. Government Securities,  including U.S. Treasury
bills, notes and bonds, and mortgage  participation  certificates  guaranteed by
the Government National Mortgage Association are supported by the full faith and
credit  of the U.S.  Government,  which in  general  terms  means  that the U.S.
Treasury stands behind the obligation to pay principal and interest.

The  value of U.S.  Government  Securities  will  fluctuate  until  they  mature
depending on prevailing  interest rates.  Because the yields on U.S.  Government
Securities are generally lower than on corporate debt securities, when the funds
hold U.S.  Government  Securities each may attempt to increase the income it can
earn from them by  writing  covered  call  options  against  them,  when  market
conditions are  appropriate.  Writing  covered calls is explained  above,  under
"Hedging."

LOWER-GRADE DEBT SECURITIES

Both funds may also invest in  "lower-grade"  debt  securities  which  generally
offer higher income  potential than investment grade  securities.  "Lower-grade"
securities  are those  rated  below  "BBB" by  Standard & Poor's  Ratings  Group
("Standard & Poor's") or "Baa" by Moody's Investors Services,  Inc.  ("Moody's")
or similar ratings given by other domestic or foreign rating  organizations,  or
securities that are not rated by a nationally-recognized rating organization but
the Manager judges them to be comparable to lower-rated securities.  Disciplined
Value Fund will not purchase  securities  rated below B by Moody's or Standard &
Poor's.  Disciplined Value Fund may retain securities whose ratings fall below B
after purchase  unless and until the Manager  determines  that disposing of such
securities is in the fund's best interest.

                                     -29-

<PAGE>



LifeSpan Growth Fund may invest in securities  rated as low as "D" by Standard &
Poor's or "C" by Moody's.

TEMPORARY DEFENSIVE INVESTMENTS

Each fund may invest  substantial  amounts of its assets in debt securities when
market  conditions are unstable.  Such debt securities  include rated or unrated
bonds and debentures, cash equivalents and money market instruments,  commercial
paper  rated "A-1" or better by Standard & Poor's or "P-1" or better by Moody's,
or U.S. government securities. It is expected that at the time of purchase, debt
securities that would make up the fund's temporary  defensive  investments would
be rated BBB or above by S&P or Baa or above by Moody's  or  another  nationally
recognized  statistical rating organization or if unrated, of comparable quality
as determined by the Manager.

ADRS,  EDRS AND GDRS.  Each fund may  invest  in ADRs,  EDRs and GDRs.  ADRs are
receipts  issued by a U.S.  bank or trust company  which  evidence  ownership of
underlying  securities  of foreign  corporations.  ADRs are  traded on  domestic
exchanges  or in  the  U.S.  over-the-counter  market  and,  generally,  are  in
registered  form.  To the extent a Fund acquires ADRs through banks which do not
have a  contractual  relationship  with  the  foreign  issuer  of  the  security
underlying  the ADR to issue and  service  that ADR,  there may be an  increased
possibility  that the Fund would not become aware of and be able to respond in a
timely  manner to corporate  actions  such as stock  splits or rights  offerings
involving the foreign issuer. A Fund may also invest in EDRs and GDRs, which are
receipts evidencing an arrangement with a non-U.S. bank similar to that for ADRs
and are designed for use in non-U.S.  securities markets.  EDRs and GDRs are not
necessarily quoted in the same currency as the underlying security.

EURODOLLARS  AND YANKEE  DOLLARS.  Both funds may also invest in  obligations of
foreign branches of U.S. banks (denominated in Eurodollars) and U.S. branches of
foreign banks ("Yankee  dollars") as well as foreign  branches of foreign banks.
These investments involve risks that are different from investment in securities
of  U.S.  banks,   including  potential   unfavorable   political  and  economic
developments,  different tax provisions,  seizure of foreign deposits,  currency
controls,  interest  limitations or other governmental  restrictions which might
affect payment of principal or interest.

INVESTING  IN EMERGING  MARKET  COUNTRIES.  Babson-Stewart  Ivory  International
("Babson-Stewart"), as the Subadviser to the international component of LifeSpan
Growth Fund, may invest a portion of that Fund's assets in companies  located in
emerging countries.  The Subadviser  considers emerging countries to include any
country  that  is  defined  as  an  emerging  or   developing   economy  by  the
International Bank for Reconstruction and Development, the International Finance
Committee, The United Nations or its

                                     -30-

<PAGE>



authorities,  or the MSCI  Emerging  Markets  Index.  There  are  special  risks
investing in emerging markets, discussed in "Investment Risks," above.

MORTGAGE-BACKED SECURITIES, CMOS AND REMICS. Certain mortgage-backed securities,
whether issued by the U.S.  Government or by private issuers,  "pass-through" to
investors the interest and principal  payments  generated by a pool of mortgages
assembled  for  sale  by  government  agencies.   Pass-through   mortgage-backed
securities  entail the risk that  principal may be repaid at any time because of
prepayments  on the underlying  mortgages.  That may result in greater price and
yield  volatility  than  traditional  fixed-income  securities that have a fixed
maturity and interest rate.

LifeSpan Growth Fund may invest in collateralized mortgage obligations ("CMO"s),
which generally are obligations fully collateralized by a portfolio of mortgages
or mortgage-related  securities, and in real estate mortgage investment conduits
("REMICs").  Payment of the  interest  and  principal  generated  by the pool of
mortgages  on CMOs and REMICs are passed  through to the holders as the payments
are  received.  CMOs and REMICs  are issued  with a variety of classes or series
which have  different  maturities.  Certain CMOs and REMICs may be more volatile
and less liquid than other types of mortgage-related securities,  because of the
possibility  of the prepayment of principal due to prepayments on the underlying
mortgage  loans.  The Fund does not intend to acquire  "residual"  interests  in
REMICs.

"STRIPPED"  SECURITIES.  LifeSpan Growth Fund may also invest in CMOs and REMICs
that are "stripped." That means that the security is divided into two parts, one
of  which  receives  some or all of the  principal  payments  (and is known as a
"principal-only"  security or "P/O") and the other which receives some or all of
the interest (and is known as an "interest-only"  security,  or "I/O"). P/Os and
I/Os are generally  referred to as "derivative  investments,"  discussed further
below.

The yield to  maturity on the class that  receives  only  interest is  extremely
sensitive to the rate of payment of the principal on the  underlying  mortgages.
Principal  prepayments  increase that sensitivity.  Stripped securities that pay
"interest only" are therefore  subject to greater price volatility when interest
rates change, and they have the additional risk that if the underlying mortgages
are prepaid,  LifeSpan Growth Fund will lose the anticipated  cash flow from the
interest on the prepaid mortgages.  That risk is increased when general interest
rates  fall,  and in times of rapidly  falling  interest  rates,  the Fund might
receive back less than its investment.

The value of "principal only" securities  generally  increases as interest rates
decline and prepayment  rates rise.  The price of these  securities is typically
more volatile than that of coupon-bearing bonds of the same maturity.


                                     -31-

<PAGE>



Private-issuer   stripped   securities  are  generally  purchased  and  sold  by
institutional   investors   through   investment   banking  firms.  At  present,
established  trading  markets  have  not yet  developed  for  these  securities.
Therefore,  most private-issuer stripped securities may be deemed "illiquid." If
LifeSpan Growth Fund holds illiquid stripped securities,  the amount it can hold
will be subject to the Fund's investment policy limiting investments in illiquid
securities to 15% of the Fund's net assets, discussed below.

ASSET-BACKED  SECURITIES.  LifeSpan  Growth  Fund may  invest in  "asset-backed"
securities. These represent interests in pools of consumer loans and other trade
receivables,  similar to mortgage-backed  securities.  They are issued by trusts
and "special purpose corporations." They are backed by a pool of assets, such as
credit card or auto loan  receivables,  which are the obligations of a number of
different  parties.  The income from the  underlying  pool is passed  through to
holders,  such as the LifeSpan Growth Fund. These securities may be supported by
a credit  enhancement,  such as a letter of credit,  a guarantee or a preference
right.  However,  the  extent of the credit  enhancement  may be  different  for
different  securities and generally applies to only a fraction of the security's
value.  These  securities  present  special risks.  For example,  in the case of
credit  card  receivables,  the  issuer  of the  security  may have no  security
interest in the related collateral.

STRUCTURED  NOTES.  LifeSpan  Growth  Fund may  invest in  structured  notes.  A
structured  note  is a debt  security  having  an  interest  rate  or  principal
repayment  requirement  based on the performance of a benchmark asset or market,
such as stock prices,  currency exchange rates or commodity prices. They provide
exposure to the  benchmark  market  while fixing the maximum loss if that market
does not  perform  as  expected.  Depending  on the terms of the note,  LifeSpan
Growth Fund could forego all or part of the interest and principal that would be
payable on a comparable  conventional note, and the Fund's loss could not exceed
that  amount.  The Fund does not intend to invest more than 5% of its net assets
in structured notes.

INVERSE  FLOATING RATE  INSTRUMENTS.  LifeSpan Growth Fund may invest in inverse
floating rate debt instruments ("inverse floaters"), including leveraged inverse
floaters and inverse floating rate mortgage-backed  securities,  such as inverse
floating rate "interest only" stripped mortgage-backed  securities. The interest
rate on inverse  floaters resets in the opposite  direction from the market rate
of interest to which the inverse  floater is indexed.  An inverse floater may be
considered  to be  leveraged  to the extent that its  interest  rate varies by a
magnitude  that  exceeds  the  magnitude  of the  change  in the  index  rate of
interest.  The  higher  degree of  leverage  inherent  in  inverse  floaters  is
associated with greater volatility in their market values.

SMALL,  UNSEASONED  COMPANIES.  LifeSpan Growth Fund may invest in securities of
small, unseasoned companies. These are companies

                                     -32-

<PAGE>



that have been in operation  less than three years,  including the operations of
any  predecessors.  Securities  of these  companies  may have limited  liquidity
(which means that the Fund may have  difficulty  selling  them at an  acceptable
price when it wants to) and the price of these securities may be volatile.

INVESTMENT RESTRICTIONS

LifeSpan  Growth  Fund  and  Disciplined  Value  Fund  have  certain  investment
restrictions that,  together with their investment  objectives,  are fundamental
policies,  changeable only by shareholder approval. Set forth below is a summary
of these  investment  restrictions  which are  different  for each  fund.  Other
investment restrictions for each fund are substantially the same:

Under these fundamental policies, LifeSpan Growth Fund cannot do the following:

LifeSpan  Growth Fund cannot  purchase any securities on margin (except that the
Company may obtain such short-term credits as may be necessary for the clearance
of  purchases  and  sales  of  portfolio  securities)  or make  short  sales  of
securities or maintain a short  position.  The deposit or payment by the Fund of
initial or maintenance  margin in connection  with futures  contracts or related
options transactions is not considered the purchase of a security on margin.

LifeSpan Growth Fund may not invest in commodities, except the Fund may purchase
and sell  options  on  securities,  securities  indices  and  currency,  futures
contracts  on  securities,  securities  indices and currency and options on such
futures,  forward foreign  currency  exchange  contracts,  forward  commitments,
securities index put or call warrants and repurchase  agreements entered into in
accordance with the Fund's investment policies.

LifeSpan Growth Fund cannot borrow money,  except for emergency or extraordinary
purposes  including (i) from banks for  temporary or short-term  purposes or for
the clearance of transactions,  in amounts not to exceed 33-1/3% of the value of
the Fund's total assets  (including the amount  borrowed) taken at market value,
(ii) in  connection  with the  redemption  of Fund  shares or to finance  failed
settlements  of  portfolio  trades  without  immediately  liquidating  portfolio
securities or other assets;  and (iii) in order to fulfill  commitments or plans
to  purchase  additional  securities  pending  the  anticipated  sale  of  other
portfolio  securities or assets,  but only if after each such borrowing there is
asset  coverage of at least 300% as defined in the  Investment  Company Act. For
purposes  of  this  investment  restriction,   mortgage  dollar  rolls,  futures
contracts,  options on futures  contracts,  securities  or indices  and  forward
commitment transactions shall not constitute borrowing.

LifeSpan Growth Fund cannot purchase the securities of issuers  conducting their
principal activity in the same industry if,

                                     -33-

<PAGE>



immediately  after such purchase,  the value of its investments in such industry
would  exceed 25% of its total  assets taken at market value at the time of such
investment.  This limitation does not apply to investments in obligations of the
U.S. Government or any of its agencies,  instrumentalities  or authorities.  The
Fund has  undertaken,  as a matter  of  non-fundamental  policy,  to apply  this
restriction to 25% or more of their assets.

With respect to 75% of its total assets,  LifeSpan  Growth Fund cannot  purchase
securities  of  an  issuer  (other  than  the  U.S.  Government,  its  agencies,
instrumentalities  or authorities),  if: (a) such purchase would cause more than
5% of the  Fund's  total  assets  taken at market  value to be  invested  in the
securities of such issuer; or (b) such purchase would at the time result in more
than 10% of the outstanding  voting  securities of such issuer being held by the
Fund.

LifeSpan  Growth  Fund  cannot  make  loans,  except  that the Fund (1) may lend
portfolio  securities in accordance  with the Fund's  investment  policies up to
33-1/3%  of the  Fund's  total  assets  taken at market  value,  (2) enter  into
repurchase agreements, and (3) purchase all or a portion of an issue of publicly
distributed bonds, debentures or other similar obligations.

LifeSpan Growth Fund may not act as an underwriter, except to the extent that in
connection with the disposition of portfolio securities,  the Fund may be deemed
to be an underwriter for purposes of the 1933 Act.

LifeSpan Growth cannot purchase or sell real estate except that the Fund may (i)
acquire or lease  office  space for its own use,  (ii) invest in  securities  of
issuers  that  invest  in real  estate or  interests  therein,  (iii)  invest in
securities that are secured by real estate or interests  therein,  (iv) purchase
and sell mortgage-related  securities and (v) hold and sell real estate acquired
by the Fund as a result of the ownership of securities.

LifeSpan Growth Fund cannot purchase the securities of issuers  conducting their
principal activity in the same industry if, immediately after such purchase, the
value of its  investments  in such industry would exceed 25% of its total assets
taken at market value at the time of such  investment.  This limitation does not
apply  to  investments  in  obligations  of the  U.S.  Government  or any of its
agencies, instrumentalities or authorities.

LifeSpan Growth Fund cannot issue senior securities, except as permitted above.

Under  these  fundamental  policies,   Disciplined  Value  Fund  cannot  do  the
following:

Disciplined  Value  Fund  cannot  borrow  amounts  in excess of 10% of its total
assets,  taken at market value at the time of the borrowing,  and then only from
banks as a temporary measure for

                                     -34-

<PAGE>



extraordinary or emergency purposes, or make investments in portfolio securities
while such outstanding borrowings exceed 5% of its total assets;

Disciplined  Value Fund  cannot  allow its  current  obligations  under  reverse
repurchase agreements,  together with borrowings,  to exceed 1/3 of the value of
its total  assets (less all its  liabilities  other than the  obligations  under
borrowings and such agreements);

Disciplined  Value Fund  cannot  invest  more than 25% of the value of its total
assets in the securities of issuers in any single  industry,  provided that this
limitation  shall not apply to the purchase of obligations  issued or guaranteed
by the United States Government, its agencies or instrumentalities;

Disciplined Value Fund cannot (a) invest more than 5% of its total assets (taken
at market value at the time of each  investment) in the  securities  (other than
United  States  Government or Government  agency  securities)  of any one issuer
(including  repurchase  agreements  with any one bank or dealer) or more than 15
percent  of its  total  assets  in the  obligations  of any  one  bank;  and (b)
Disciplined  Value  Fund  cannot  purchase  more than  either  (i) 10 percent in
principal  amount of the outstanding  debt  securities of an issuer,  or (ii) 10
percent of the  outstanding  voting  securities  of an issuer,  except that such
restrictions  shall not apply to  securities  issued or guaranteed by the United
States  Government or its agencies,  bank money  instruments or bank  repurchase
agreements;

Disciplined  Value Fund cannot  purchase or sell  interests in oil, gas or other
mineral exploration or development programs, commodities, commodity contracts or
real estate,  except that such portfolio may: (1) purchase securities of issuers
which invest or deal an any of the above and (2) invest for hedging  purposes in
futures contracts on securities,  financial instruments and indices, and foreign
currency, as are approved for trading on a registered exchange;

Disciplined Value Fund cannot make loans,  except that it may (1) lend portfolio
securities in accordance with its investment policies up to 33 1/3% of its total
assets taken at market  value,  (2) enter into  repurchase  agreements,  and (3)
purchase all or a portion of an issue of publicly  distributed  debt securities,
bank loan  participation  interests,  bank  certificates  of  deposit,  bankers'
acceptances, debentures or other securities, whether or not the purchase is made
upon the original issuance of the securities;

Disciplined  Value Fund cannot  mortgage,  pledge,  hypothecate or in any manner
transfer,  as security  for  indebtedness,  any  securities  owned or held by it
except  as may be  necessary  in  connection  with  borrowings,  and  then  such
mortgaging, pledging or hypothecating may

                                     -35-

<PAGE>



not  exceed 10 percent of its total  assets,  taken at market  value at the time
thereof;

Disciplined  Value Fund cannot  issue  senior  securities,  except as  permitted
above;

Alone,  or together with any other  portfolio or portfolios,  Disciplined  Value
Fund cannot make  investments  for the purpose of  exercising  control  over, or
management of, any issuer;

Disciplined Value Fund cannot purchase securities of other investment companies,
except   in   connection   with  a   merger,   consolidation,   acquisition   or
reorganization,  or by purchase in the open market of  securities  of closed-end
investment  companies  where no  underwriter  or dealer's  commission or profit,
other than the customary broker's commission is involved and only if immediately
thereafter  not more than 10 percent of  Disciplined  Value Fund's total assets,
taken at market value, would be invested in such securities;

Disciplined Value Fund cannot purchase any securities on margin (except that the
Company  may  obtain  such  short-  term  credits  as may be  necessary  for the
clearance of purchases and sales of portfolio securities) or make short sales of
securities or maintain a short position;

Disciplined  Value Fund cannot  underwrite  securities of other  issuers  except
insofar  as the  Company  may be  deemed  an  underwriter  under the 1933 Act in
selling portfolio securities;

Disciplined   Value  Fund  cannot  write,   purchase  or  sell  puts,  calls  or
combinations thereof, except that covered call options may be written;

Disciplined  Value Fund cannot invest in securities of foreign issuers if at the
time of  acquisition  more than 10 percent of its total assets,  taken at market
value  at the time of the  investment,  would be  invested  in such  securities.
However,  up to 25 percent of the total assets of such portfolio may be invested
in the aggregate in such securities (i) issued, assumed or guaranteed by foreign
governments,  or  political  subdivisions  or  instrumentalities  thereof,  (ii)
assumed or guaranteed by domestic issuers,  including Eurodollar securities,  or
(iii)  issued,  assumed  or  guaranteed  by  foreign  issuers  having a class of
securities listed for trading on the New York Stock Exchange; and

Disciplined  Value Fund cannot  invest more than 10 percent in the  aggregate of
the value of its total  assets in  repurchase  agreements  maturing in more than
seven days,  time deposits  maturing in more than 2 days,  portfolio  securities
which do not have readily  available  market  quotations  and all other illiquid
assets.

                                     -36-

<PAGE>



Unless the prospectus of the Fund states that a percentage  restriction  applies
on an ongoing  basis,  it applies only at the time that fund makes an investment
and the Fund need not sell securities to meet the percentage limits if the value
of the investment increases in proportion to the size of the Fund.

DESCRIPTION OF BROKERAGE PRACTICES

The brokerage  practices of the funds are the same. Subject to the provisions of
each fund's  advisory  agreement,  the  procedures  and rules  described  above,
allocations of brokerage are generally made by the Manager's  portfolio  traders
based upon  recommendations  from the Manager's portfolio  managers.  In certain
instances,  portfolio managers may directly place trades and allocate brokerage,
also subject to the provisions of each advisory agreement and the procedures and
rules  described  above.  In  either  case,  brokerage  is  allocated  under the
supervision of the Manager's executive officers and the Manager. Transactions in
securities  other than those for which an  exchange  in the  primary  market are
generally done with principals or market makers.  Brokerage commissions are paid
primarily  for  effecting  transactions  in  listed  securities  or for  certain
fixed-income  agency transactions in the secondary market and are otherwise paid
only if it appears likely that a better price or execution can be obtained.

When either fund engages in an option  transaction,  ordinarily  the same broker
will be used for the purchase or sale of the option and any  transaction  in the
securities to which the option  relates.  When  possible,  concurrent  orders to
purchase or sell the same  security by more than one of the accounts  managed by
the Manager or its affiliates are combined.  The transactions  effected pursuant
to such  combined  orders are averaged as to price and  allocated in  accordance
with the purchase or sale orders actually placed for each account.

The research  services  provided by a particular  broker may be useful to one or
more of the advisory accounts of the Manager and its affiliates,  and investment
research received for the commissions of those other accounts may be useful both
to either fund and one or more of such other accounts. Such research,  which may
be supplied by a third party at the instance of a broker,  includes  information
and  analyses  on  particular  companies  and  industries  as well as  market or
economic  trends  and  portfolio  strategy,  receipt  of market  quotations  for
portfolio  evaluations,  information  systems,  computer  hardware  and  similar
products  and  services.  If a research  service  also  assists the Manager in a
non-research  capacity (such as bookkeeping or other administrative  functions),
then only the percentage or component that provides assistance to the Manager in
the investment  decision-making  process may be paid in commission dollars.  The
Board of  Directors  permits  the  Manager  to use  concessions  on  fixed-price
offerings to obtain research, in the

                                     -37-

<PAGE>



same manner as is permitted for agency transactions.  The Board also permits the
Manager to use stated  commissions  on secondary  fixed-income  agency trades to
obtain  research  where the broker has  represented to the Manager that: (i) the
trade is not from or for the  broker's  own  inventory,  (ii) the  trade was not
executed by the broker on an agency  basis at the stated  commission,  and (iii)
the trade is not a riskless principal transaction.

The research  services  provided by brokers broaden the scope and supplement the
research  activities of the Manager,  by making  available  additional views for
consideration  and  comparisons,  and  enabling  the  Manager  to obtain  market
information  for the  valuation of securities  held in each fund's  portfolio or
being considered for purchase.

The Board of  Directors,  including  the  "independent"  directors of the Funds,
(those who are not "interested persons" as defined in the Investment Company Act
and who have no direct or indirect  financial  interest in the  operation of the
Investment  Advisory  Agreement or Distribution  Plan described  below) annually
reviews  information  furnished  by the  Manager as to the  commissions  paid to
brokers  furnishing  such services so that the Board may  ascertain  whether the
amount of such  commissions  was  reasonably  related to the value or benefit of
such services.

Please  refer to the  Statement  of  Additional  Information  for each  fund for
further information on each fund's brokerage practices.

EXPENSE RATIOS AND PERFORMANCE

The ratio of expenses to average annual net assets for LifeSpan  Growth Fund for
the fiscal year ended  October 31, 1997 was 1.50% for Class A, 2.27% for Class B
and 2.29% for Class C shares. The ratio of expenses to average annual net assets
for  Disciplined  Value Fund for the fiscal year ended October 31, 1997, for its
Class A,  Class B,  Class C and Class Y shares  (on an  annualized  basis)  were
1.06%, 1.84%, 1.85% and 0.75%, respectively. Further details are set forth above
under "Comparative Fee Table", and in LifeSpan Growth Fund's Annual Report as of
October 31, 1997, and  Disciplined  Value Fund's Annual Report as of October 31,
1997,  which are  included  in the  Statement  of  Additional  Information.  The
performance  of the funds for the 1,3,5 and 10 year  periods  ended  October 31,
1997 is set forth in Exhibit B.

SHAREHOLDER SERVICES

The policies of LifeSpan Growth Fund and Disciplined  Value Fund with respect to
minimum initial  investments and subsequent  investments by its shareholders are
the same.  Both  LifeSpan  Growth  Fund and  Disciplined  Value  Fund  offer the
following  privileges:  (i) Right of Accumulation,  (ii) Letter of Intent, (iii)
reinvestment of

                                     -38-

<PAGE>



dividends and  distributions at net asset value,  (iv) net asset value purchases
by certain  individuals and entities,  (v) Asset Builder (automatic  investment)
Plans,  (vi) Automatic  Withdrawal and Exchange Plans for  shareholders  who own
shares of the fund valued at $5,000 or more,  (vii)  AccountLink  and  PhoneLink
arrangements, (viii) exchanges of shares for shares of the same class of certain
other funds at net asset  value,  and (ix)  telephone  redemption  and  exchange
privileges.

Shareholders  may purchase shares through  OppenheimerFunds  AccountLink,  which
links a shareholder account to an account at a bank or financial institution and
enables  shareholders  to send money  electronically  between those  accounts to
perform a number of types of account transactions. This includes the purchase of
shares through the automated telephone system (PhoneLink). Exchanges can also be
made  by  telephone,  or  automatically  through  PhoneLink.  After  AccountLink
privileges have been established with a bank account, shares may be purchased by
telephone  in an amount up to  $100,000.  Shares of either Fund may be exchanged
for shares of certain  Oppenheimer funds at net asset value per share;  however,
shares of a particular  class may be exchanged only for shares of the same class
of other Oppenheimer funds. Shareholders of the funds may redeem their shares by
written  request  or by  telephone  request  in an amount up to  $50,000  in any
seven-day  period.  Shareholders may arrange to have share  redemption  proceeds
wired to a pre-designated  account at a U.S. bank or other financial institution
that  is an ACH  member,  through  AccountLink.  There  is no  dollar  limit  on
telephone  redemption  proceeds sent to a bank account when AccountLink has been
established.  Shareholders may also redeem shares  automatically by telephone by
using PhoneLink. Shareholders of Disciplined Value Fund and LifeSpan Growth Fund
may also have the Transfer Agent send  redemption  proceeds of $2,500 or more by
Federal  Funds  wire to a  designated  commercial  bank which is a member of the
Federal Reserve wire system.  Shareholders of the funds have up to six months to
reinvest redemption proceeds of their Class A shares which they purchase subject
to a sales  charge  or their  Class B shares  on which  they  paid a  contingent
deferred sales charge, in Class A shares of the funds or other Oppenheimer funds
without paying a sales charge.  LifeSpan Growth Fund and Disciplined  Value Fund
may redeem  accounts  with less than 100 shares if the account has fallen  below
such stated amount for reasons other than market value fluctuations.  Both funds
offer   Automatic   Withdrawal  and  Automatic   Exchange  Plans  under  certain
conditions.

RIGHTS OF SHAREHOLDERS

The shares of each such fund, including shares of each class, entitle the holder
to one vote per share on the  election of directors of the Company and all other
matters submitted to shareholders of the fund. Each share of the fund represents
an

                                     -39-

<PAGE>



interest in the fund  proportionately  equal to the interest of each other share
of the same class and entitle the holder to one vote per share (and a fractional
vote for a fractional share) on matters submitted to their vote at shareholders'
meetings. Shareholders of each fund vote together with the shareholders of other
series of the  Company  in the  aggregate  on certain  matters at  shareholders'
meetings,  such as the election of Directors and  ratification of appointment of
auditors.  Shareholders  of a  particular  series or class  vote  separately  on
proposals  which affect that series or class,  and  shareholders  of a series or
class  which is not  affected  by that  matter are not  entitled  to vote on the
proposal.  For example,  only  shareholders of a series vote  exclusively on any
material  amendment to the  investment  advisory  agreement  with respect to the
series.  Only shareholders of a class of a series vote on certain  amendments to
the Distribution  and/or Service Plans if the amendments affect only that class.
The Board of the  Company is  authorized  to create  new  series and  classes of
series.  The Board may reclassify  unissued shares of both funds into additional
series or classes of shares.  The Board may also divide or combine the shares of
a class into a greater or lesser number of shares without  thereby  changing the
proportionate  beneficial  interest of a shareholder in each fund. Shares do not
have cumulative voting rights or preemptive or subscription  rights.  Shares may
be voted in person or by proxy. Each share has one vote at shareholder meetings,
with fractional shares voting proportionately. Shares of a particular class vote
together on matters that affect that class.  Most  amendments to the Articles of
Incorporation  governing the Company require the approval of a "majority" of the
outstanding  voting securities (as defined in the Investment Company Act) of the
Company's shares without regard to series or class.

Class A,  Class B and Class C shares of  LifeSpan  Growth  Fund and the Class A,
Class B and Class C shares of Disciplined  Value Fund which LifeSpan Growth Fund
shareholders  will  receive  in  the   Reorganization  and  Class  Y  shares  of
Disciplined  Value  Fund,  participate  equally  in  the  funds'  dividends  and
distributions and in the funds' net assets upon  liquidation,  after taking into
account the different  expenses paid by each class.  Distributions and dividends
for  each  class  will be  different  and  Class B and  Class  C  dividends  and
distributions will be lower than Class A and Class Y dividends.

It is not  contemplated  that the Company will hold regular  annual  meetings of
shareholders.  Under the Investment Company Act, shareholders of LifeSpan Growth
Fund  do  not  have  rights  of  appraisal  as  a  result  of  the  transactions
contemplated by the Reorganization  Agreement.  However,  they have the right at
any time prior to the consummation of such transaction to redeem their shares at
net  asset  value,  less  any  applicable   contingent  deferred  sales  charge.
Shareholders of both of the funds have the right,  under certain  circumstances,
to remove a Director and will be

                                     -40-

<PAGE>



assisted in communicating with other shareholders for such purpose.

Each Fund is a series of the Company, which is a corporation organized under the
laws  of  the  state  of  Maryland.  As  a  general  matter,  shareholders  of a
corporation  will not be liable to the corporation or its creditors with respect
to their interests in the corporation as long as their shares have been paid for
and  the  requisite  corporate  formalities  have  been  observed,  both  in the
organization of the corporation and in the conduct of its business.

ORGANIZATION AND HISTORY

Disciplined  Value  Fund and  LifeSpan  Growth  Fund are  diversified  series of
Oppenheimer  Series  Fund,  Inc.  which  was  organized  in 1981  as a  Maryland
corporation and is an open-end  management  investment  company.  Organized as a
series fund, Oppenheimer Series Fund, Inc. presently has five series,  including
the Disciplined  Value Fund and LifeSpan Growth Fund. The Company is governed by
a Board of Directors.

MANAGEMENT AND DISTRIBUTION ARRANGEMENTS

The Manager,  located at Two World Trade Center,  New York, New York 10048-0203,
acts as the  investment  adviser for  LifeSpan  Growth Fund and also acts as the
investment  adviser to  Disciplined  Value Fund. The terms and conditions of the
investment  advisory  agreement for each fund are  substantially  the same.  The
monthly  management  fee  payable to the Manager by each fund is set forth under
"Synopsis Investment Advisory and Distribution and Service Plan Fees" along with
the fees paid by the Manger to the  Sub-Advisers  for LifeSpan  Growth Fund. The
12b-1  Distribution  and Service Plan fees paid by fund with respect to Class A,
Class B and Class C shares are set forth  above  under  "Synopsis  -  Investment
Advisory and  Distribution  and Service Plan Fees." No Distribution  and Service
Plan fees are paid by Disciplined Value Fund with respect to Class Y shares.

Pursuant to each  investment  advisory  agreement,  the Manager  supervises  the
investment operations of the funds and the composition of their portfolios,  and
furnishes  advice and  recommendations  with respect to investments,  investment
policies and the  purchase  and sale of  securities.  Both  investment  advisory
agreements  require the Manager to provide  LifeSpan Growth Fund and Disciplined
Value Fund with adequate  office space,  facilities and equipment and to provide
and  supervise  the  activities  of all  administrative  and clerical  personnel
required  to  provide  effective  administration  for the funds,  including  the
compilation  and  maintenance of records with respect to their  operations,  the
preparation and filing of specified reports,  and composition of proxy materials
and registration statements for continuous public sale of shares of each fund.


                                     -41-

<PAGE>



The  Manager has  engaged  three  Subadvisers  to provide  day-to-day  portfolio
management for certain  components of the LifeSpan Growth Fund.  Babson-Stewart,
One Memorial Drive,  Cambridge,  MA 02142,  the Subadviser to the  international
component,  was established in 1987. The general partners of Babson-Stewart  are
David L. Babson & Co., which is an indirect  subsidiary of Massachusetts  Mutual
Life Insurance Company, and Stewart Ivory & Co., Ltd.

BEA Associates, One Citicorp Center, 153 East 53rd Street, 57th Floor, New York,
NY 10022,  the Subadviser to the high yield/high  risk bond component,  has been
providing  fixed-income and equity management services to institutional  clients
since 1984. BEA is a partnership  between Credit Suisse Capital  Corporation and
CS Advisors Corp.

Pilgrim Baxter & Associates, Ltd. ("Pilgrim Baxter"), 1255 Drummers Lane, Wayne,
PA 19087, the Subadviser to the small cap component,  was established in 1982 to
provide  specialized  equity  management for institutional  investors  including
other  investment  companies.  Pilgrim  Baxter is a  wholly-owned  subsidiary of
United Asset Management Corporation. Each Subadviser is responsible for choosing
the  investments  of its  respective  component for each Fund and its duties and
responsibilities  are set forth in its respective contract with the Manager. The
Manager, not the Fund, pays the Subadvisers.

Expenses  not  expressly  assumed  by the  Manager  under each  fund's  advisory
agreement or by OppenheimerFunds Distributor,  Inc., the funds' distributor (the
"Distributor"), under the General Distributor's Agreement are paid by the funds.
The advisory  agreements list examples of expenses paid by the funds,  the major
categories of which relate to interest,  taxes, brokerage  commissions,  fees to
certain  Directors,  legal and audit  expenses,  custodian  and  transfer  agent
expenses,  share issuance costs,  certain  printing and  registration  costs and
non-recurring  expenses,  including litigation costs. The management fee paid by
LifeSpan  Growth Fund for the fiscal year ended  October 31, 1997 was  $457,316.
For the  fiscal  year  ended  October  31,  1997,  the  management  fee  paid by
Disciplined Value Fund was $1,850,924. The funds' investment advisory agreements
contain no expense limitation.

The Manager is controlled by Oppenheimer  Acquisition  Corp., a holding  company
owned in part by senior  management of the Manager and ultimately  controlled by
Massachusetts  Mutual Life Insurance  Company,  a mutual life insurance  company
that also  advises  pension  plans and  investment  companies.  The  Manager has
operated  as an  investment  company  adviser  since  1959.  The Manager and its
affiliates  currently  advise  investment  companies  with  combined  net assets
aggregating over $75 billion as of December 31, 1997, with more than 3.5 million
shareholder accounts. OppenheimerFunds Services, a division of the Manager, acts
as transfer and

                                     -42-

<PAGE>



shareholder  servicing  agent on an at-cost  basis for LifeSpan  Growth Fund and
Disciplined  Value Fund and for  certain  other  open-end  funds  managed by the
Manager and its affiliates.

The Distributor,  under a General Distributor's Agreement for each of the funds,
acts as the principal  underwriter in the continuous public offering of Class A,
Class B and Class C shares of each fund and Class Y shares of Disciplined  Value
Fund.  During  LifeSpan  Growth Fund's  fiscal year ended October 31, 1997,  the
aggregate  sales charges on sales of LifeSpan  Growth Fund's Class A shares were
$137,511, of which the Distributor and an affiliated  broker-dealer  retained in
the aggregate $111,486.  During LifeSpan Growth Fund's fiscal year ended October
31, 1997, the contingent  deferred  sales charges  collected on LifeSpan  Growth
Fund's Class B and Class C shares  totaled $2,500 and $0,  respectively,  all of
which the Distributor retained.  For the fiscal year ended October 31, 1997, the
aggregate  amount of sales charges on sales of Disciplined  Value Fund's Class A
shares was $885,737,  of which $558,864 was retained by the  Distributor  and an
affiliated  broker-dealer.  Contingent  deferred sales charges  collected by the
Distributor  on the redemption of Class B and Class C shares for the fiscal year
ended October 31, 1997 totaled  $31,154 and $0,  respectively,  all of which was
retained by the Distributor.  For additional  information about  distribution of
the  funds'  shares and the  payments  made by the funds to the  Distributor  in
connection  with such  activities,  please  refer to  "Distribution  and Service
Plans," in each fund's Statement of Addition Information.

PURCHASE OF ADDITIONAL SHARES

Class A shares of LifeSpan  Growth Fund and Class A shares of Disciplined  Value
Fund may be purchased  with an initial  sales  charge of 5.75% for  purchases of
less than $25,000.  The sales charge of 5.75% is reduced for purchases of either
fund's  Class A shares of $25,000 or more.  For  purchases of $1 million or more
($500,000 or more for purchases by "Retirement Plans", as defined in each fund's
prospectus)  if those shares are redeemed  within 12 calendar  months (18 months
for shares  purchased  prior to May 1, 1997) of the end of the calendar month of
their  purchase,  a contingent  sales charge may be deducted from the redemption
proceeds.  Class B shares of LifeSpan Growth Fund and Disciplined Value Fund are
sold at net asset value  without an initial sales  charge,  however,  if Class B
shares of either fund are  redeemed  within six years of the end of the calendar
month of their purchase,  a contingent  deferred sales charge may be deducted of
up to 5%,  depending upon how long such shares had been held.  Class C shares of
either fund may be purchased without an initial sales charge, but if sold within
12  months of buying  them,  a  contingent  deferred  sales  charge of 1% may be
deducted.  Class Y shares are sold without a sales charge and are only available
to certain qualified institutional purchasers.


                                     -43-

<PAGE>



The initial sales charge and contingent deferred sales charge on Class A shares,
Class  B and  Class  C  shares  of  Disciplined  Value  Fund  will  only  affect
shareholders  of  LifeSpan  Growth  Fund to the extent  that they desire to make
additional  purchases  of shares of  Disciplined  Value Fund in  addition to the
shares which they will receive as a result of the  Reorganization.  The Class A,
Class B and Class C shares to be issued under the Reorganization  Agreement will
be issued by  Disciplined  Value Fund at net asset value.  Future  dividends and
capital gain  distributions of Disciplined Value Fund, if any, may be reinvested
without sales charge.  The  contingent  deferred  sales charge for each class of
shares  for both  funds is the  same.  If Class A,  Class B or Class C shares of
LifeSpan  Growth  Fund are  currently  subject to a  contingent  deferred  sales
change,  the  Disciplined  Value Fund shares issued in the  Reorganization  will
continue  to be  subject  to the same  contingent  deferred  sales  charge.  Any
LifeSpan  Growth Fund  shareholder  who is entitled to a reduced sales charge on
additional  purchases  by reason of a Letter of Intent or Right of  Accumulation
based upon  holdings  of shares of  LifeSpan  Growth  Fund will  continue  to be
entitled  to a  reduced  sales  charge  on any  future  purchase  of  shares  of
Disciplined Value Fund.

DIVIDENDS AND DISTRIBUTIONS

LifeSpan Growth Fund declares dividends from net investment income and pays such
dividends  to  shareholders  annually.   LifeSpan  Growth  Fund  may  also  make
distributions  annually in December  from any net  short-term  capital gains the
Fund realizes in selling  securities.  Disciplined  Value Fund declares and pays
dividends and capital gains distributions,  if any, annually. Dividends are paid
separately  for each class of shares and normally,  the dividends on Class A and
Class Y shares are generally  expected to be higher than for Class B and Class C
shares  because  the  expenses  allocable  to Class B and  Class C  shares  will
generally  be higher  than for  Class A and  Class Y  shares.  There is no fixed
dividend  rate for either  fund and there can be no  assurance  that either fund
will pay any dividends or distributions.

                   METHOD OF CARRYING OUT THE REORGANIZATION

The  consummation  of  the  transactions   contemplated  by  the  Reorganization
Agreement is  contingent  upon the receipt of an order from the  Securities  and
Exchange Commission  exempting the Funds from the provisions of Section 17(a) of
the  Investment   Company  Act,  the  approval  of  the  Reorganization  by  the
shareholders  of  LifeSpan  Growth  Fund and the  receipt  of the  opinions  and
certificates set forth in Sections 10 and 11 of the Reorganization Agreement and
the  occurrence  of  the  events   described  in  those   Sections.   Under  the
Reorganization  Agreement, all the assets of LifeSpan Growth Fund, excluding the
Cash Reserve,  will be delivered to Disciplined Value Fund in exchange for Class
A, Class B and Class C shares of Disciplined  Value Fund. The Cash Reserve to be
retained by LifeSpan  Growth Fund will be  sufficient  in the  discretion of the
Board for the payment of LifeSpan Growth Fund's liabilities, and

                                     -44-

<PAGE>



LifeSpan Growth Fund's expenses of liquidation.

Assuming the  shareholders of LifeSpan  Growth Fund approve the  Reorganization,
the actual  exchange of assets is expected to take place on June 12, 1998, or as
soon thereafter as is practicable (the "Closing Date") on the basis of net asset
values as of the close of business on the  business  day  preceding  the Closing
Date (the "Valuation Date"). Under the Reorganization Agreement, all redemptions
of shares of LifeSpan Growth Fund shall be permanently suspended at the close of
business on the Valuation Date; only redemption requests received in proper form
on or prior to the close of  business  on that date  shall be  fulfilled  by it;
redemption  requests  received by  LifeSpan  Growth Fund after that date will be
treated as  requests  for  redemptions  of Class A, Class B or Class C shares of
Disciplined  Value  Fund  to  be  distributed  to  the  shareholders  requesting
redemption.  The  exchange of assets for shares will be done on the basis of the
per  share  net  asset  value of the  Class  A,  Class B and  Class C shares  of
Disciplined  Value Fund, and the value of the assets of LifeSpan  Growth Fund to
be transferred as of the close of business on the Valuation Date,  valued in the
manner used by  Disciplined  Value Fund in the valuation of assets.  Disciplined
Value Fund is not  assuming  any of the  liabilities  of LifeSpan  Growth  Fund,
except for portfolio securities purchased which have not settled and outstanding
shareholder redemption and dividend checks.

The net asset  value of the  shares  transferred  by  Disciplined  Value Fund to
LifeSpan  Growth  Fund will be the same as the value of the assets  received  by
Disciplined Value Fund. For example,  if, on the Valuation Date, LifeSpan Growth
Fund were to have  securities  with a market  value of  $95,000  and cash in the
amount  of  $10,000  (of  which  $5,000  was to be  retained  by it as the  Cash
Reserve),  the value of the assets  which would be  transferred  to  Disciplined
Value Fund would be  $100,000.  If the net asset value per share of  Disciplined
Value Fund were $10 per share at the close of  business on the  Valuation  Date,
the number of shares to be issued would be 10,000 ($100,000 / $10). These 10,000
shares of Disciplined Value Fund would be distributed to the former shareholders
of LifeSpan  Growth Fund. This example is given for  illustration  purposes only
and does not bear any  relationship  to the dollar amounts or shares expected to
be involved in the Reorganization.

Following the Closing Date,  LifeSpan  Growth Fund will distribute on a pro rata
basis to its  shareholders  of record on the Valuation Date the Class A, Class B
and Class C shares of Disciplined Value Fund received by LifeSpan Growth Fund at
the closing,  in liquidation of the outstanding  shares of LifeSpan Growth Fund,
and the outstanding  shares of LifeSpan Growth Fund will be canceled.  To assist
LifeSpan  Growth  Fund in this  distribution,  Disciplined  Value Fund will,  in
accordance with a shareholder  list supplied by LifeSpan Growth Fund,  cause the
transfer  agent to  credit  and  confirm  an  appropriate  number  of  shares of
Disciplined Value Fund to each shareholder of LifeSpan Growth Fund. Certificates
for Class A shares of Disciplined Value Fund will be issued upon written request
of a former shareholder of LifeSpan Growth Fund but

                                     -45-

<PAGE>



only  for  whole  shares  with  fractional  shares  credited  to the name of the
shareholder  on  the  books  of  Disciplined  Value  Fund  and  only  of  shares
represented  by  certificates  are  delivered for  cancellation.  Former Class A
shareholders of LifeSpan Growth Fund who wish  certificates  representing  their
shares of  Disciplined  Value Fund must,  after receipt of their  confirmations,
make a written  request to  OppenheimerFunds  Services,  P.O. Box 5270,  Denver,
Colorado  80217.  Shareholders  of  LifeSpan  Growth Fund  holding  certificates
representing  their shares will not be required to surrender their  certificates
to anyone  in  connection  with the  Reorganization.  After the  Reorganization,
however,   it  will  be  necessary  for  such  shareholders  to  surrender  such
certificates  in order to redeem,  transfer,  pledge or  exchange  any shares of
Disciplined Value Fund.

Under the  Reorganization  Agreement,  within one year after the  Closing  Date,
LifeSpan  Growth Fund  shall:  (a) either pay or make  provision  for all of its
debts and taxes;  and (b) either (i) transfer any  remaining  amount of the Cash
Reserve to Disciplined  Value Fund, if such remaining amount is not material (as
defined below) or (ii) distribute such remaining  amount to the  shareholders of
LifeSpan Growth Fund who were such on the Valuation Date. Such remaining  amount
shall be deemed to be material if the amount to be distributed,  after deducting
the estimated expenses of the distribution, equals or exceeds one cent per share
of the number of LifeSpan Growth Fund shares  outstanding on the Valuation Date.
Within one year after the Closing Date,  LifeSpan  Growth Fund will complete its
liquidation.

The obligations of either  LifeSpan Growth Fund or Disciplined  Value Fund under
the  Agreement  shall be subject to  obtaining  the  necessary  relief  from the
Securities  and Exchange  Commission  and to the right of either Fund to abandon
and terminate the Reorganization Agreement for any reason and without liability,
provided,  however,  that  if a Fund  should  terminate  the  Agreement  without
reasonable cause, the terminating Fund shall,  upon demand,  reimburse the other
Fund for all  expenses,  including  reasonable  out-of-pocket  expenses and fees
incurred in connection with the Agreement.

In the  event  that the  Reorganization  Agreement  is not  consummated  for any
reason,  the  Board  will  consider  and may  submit to the  shareholders  other
alternatives.

                            ADDITIONAL INFORMATION

FINANCIAL INFORMATION

The Reorganization  will be accounted for by the surviving fund in its financial
statements  similar  to  a  pooling  without   restatement.   Further  financial
information as to LifeSpan  Growth Fund is contained in its current  Prospectus,
which is available without charge from OppenheimerFunds  Services,  the Transfer
Agent, P.O. Box 5270, Denver, Colorado 80217, and is incorporated herein by

                                     -46-

<PAGE>



reference, and in its Annual Report as of October 31, 1997, which is included in
its Statement of Additional  Information.  Financial information for Disciplined
Value  Fund is  contained  in its  current  Prospectus  accompanying  this Proxy
Statement and Prospectus and incorporated herein by reference, and in its Annual
Report as of October 31, 1997,  which is included in its Statement of Additional
Information.

PUBLIC INFORMATION

Additional  information about LifeSpan Growth Fund and Disciplined Value Fund is
available,  as applicable,  in the following  documents  which are  incorporated
herein by reference:  (i) Disciplined Value Fund's Prospectus dated February 19,
1998  accompanying this Proxy Statement and incorporated  herein;  (ii) LifeSpan
Growth Fund's  Prospectus  dated February 19, 1998, as  supplemented on February
24, 1998,  which may be obtained  without charge by writing to  OppenheimerFunds
Services,  P.O. Box 5270, Denver, Colorado 80217; (iii) Disciplined Value Fund's
Annual Report as of October 31, 1997,  which may be obtained  without  charge by
writing to  OppenheimerFunds  Services at the address  indicated above; and (iv)
LifeSpan  Growth  Fund's  Annual  Report as of October  31,  1997,  which may be
obtained without charge by writing to  OppenheimerFunds  Services at the address
indicated above.  All of the foregoing  documents may be obtained by calling the
toll-free number on the cover of this Proxy Statement and Prospectus.

Additional information about the following matters is contained in the Statement
of Additional Information relating to this Reorganization, which incorporates by
reference the Disciplined  Value Fund Statement of Additional  Information dated
February  19, 1998 and  LifeSpan  Growth  Fund's  Prospectus  and  Statement  of
Additional  Information,  each dated  February  19,  1998,  as  supplemented  on
February 24, 1998; the organization and operation of Disciplined  Value Fund and
LifeSpan Growth Fund;  more  information on investment  policies,  practices and
risks; information about the Company's Board and its responsibilities; a further
description of the services  provided by  Disciplined  Value Fund's and LifeSpan
Growth Fund's  investment  advisor,  distributor,  and transfer and  shareholder
servicing agent; dividend policies; tax matters; an explanation of the method of
determining  the offering price of the shares and/or  contingent  deferred sales
charges,  as  applicable  of Class A, Class B and Class C shares of  Disciplined
Value Fund and LifeSpan Growth Fund; purchase, redemption and exchange programs;
the  different   expenses  paid  by  each  class  of  shares;  and  distribution
arrangements.

The  Company on behalf of  Disciplined  Value Fund and  LifeSpan  Growth Fund is
subject to the  informational  requirements  of the  Securities  Exchange Act of
1934,  as  amended,  and  in  accordance  therewith,   file  reports  and  other
information with the SEC. Proxy material,

                                     -47-

<PAGE>



reports and other  information  about LifeSpan Growth Fund and Disciplined Value
Fund which are of public record can be inspected and copied at public  reference
facilities maintained by the SEC in Washington, D.C. and certain of its regional
offices,  and copies of such materials can be obtained at prescribed  rates from
the  Public  Reference  Branch,  Office  of  Consumer  Affairs  and  Information
Services, SEC, Washington, D.C. 20549.

                                OTHER BUSINESS

Management of LifeSpan  Growth Fund knows of no business  other than the matters
specified above which will be presented at the Meeting.  Since matters not known
at the time of the  solicitation  may come  before  the  Meeting,  the  proxy as
solicited  confers  discretionary  authority  with  respect  to such  matters as
properly come before the Meeting,  including  any  adjournment  or  adjournments
thereof,  and it is the intention of the persons named as  attorneys-in-fact  in
the proxy to vote this proxy in accordance with their judgment on such matters.


By Order of the Board of Directors



Andrew J. Donohue, Secretary


April 6, 1998                                                              335


                                     -48-

<PAGE>



                                                                  EXHIBIT A

                     AGREEMENT AND PLAN OF REORGANIZATION


      AGREEMENT  AND  PLAN  OF  REORGANIZATION  (the  "Agreement")  dated  as of
_________,  1998 by and  between  Oppenheimer  Series  Funds,  Inc.,  a Maryland
corporation  (the  "Company") on behalf of its series,  Oppenheimer  Disciplined
Value Fund  ("Disciplined  Value  Fund") and  Oppenheimer  LifeSpan  Growth Fund
("LifeSpan Growth Fund"), a Maryland Corporation.

                             W I T N E S S E T H:

     WHEREAS, the parties are each a series of an open-end investment company of
the management type; and

      WHEREAS,  the  parties  hereto  desire to provide  for the  reorganization
pursuant to Section  368(a)(1) of the Internal  Revenue Code of 1986, as amended
(the "Code"),  of LifeSpan  Growth Fund through the  acquisition  by Disciplined
Value  Fund of  substantially  all of the  assets  of  LifeSpan  Growth  Fund in
exchange for the voting  shares of  beneficial  interest  ("shares") of Class A,
Class B and Class C shares  of  Disciplined  Value  Fund and the  assumption  by
Disciplined  Value Fund of certain  liabilities of LifeSpan  Growth Fund,  which
Class  A,  Class B and  Class C  shares  of  Disciplined  Value  Fund  are to be
distributed  by LifeSpan  Growth Fund pro rata to its  shareholders  in complete
liquidation of LifeSpan Growth Fund and complete cancellation of its shares;

      NOW, THEREFORE,  in consideration of the mutual promises herein contained,
the parties hereto agree as follows:

      1.  The  parties   hereto   hereby  adopt  this   Agreement  and  Plan  of
Reorganization  (the  "Agreement")  pursuant to Section 368(a)(1) of the Code as
follows:  The reorganization will be comprised of the acquisition by Disciplined
Value Fund of substantially  all of the properties and assets of LifeSpan Growth
Fund in exchange  for Class A, Class B and Class C shares of  Disciplined  Value
Fund and the  assumption by  Disciplined  Value Fund of certain  liabilities  of
LifeSpan Growth Fund,  followed by the distribution of such Class A, Class B and
Class C shares of  Disciplined  Value  Fund  shares to the Class A,  Class B and
Class C  shareholders  of LifeSpan  Growth  Fund in exchange  for their Class A,
Class B and Class C shares of LifeSpan  Growth Fund, all upon and subject to the
terms of the Agreement hereinafter set forth.

            The share transfer books of LifeSpan Growth Fund will be permanently
closed at the close of business on the Valuation Date (as  hereinafter  defined)
and only redemption requests received in proper form on or prior to the close of
business on the Valuation

                                     A-1

<PAGE>



Date shall be fulfilled by LifeSpan Growth Fund; redemption requests received by
LifeSpan  Growth  Fund after that date  shall be  treated  as  requests  for the
redemption  of the shares of  Disciplined  Value Fund to be  distributed  to the
shareholder in question as provided in Section 5.

      2. On the  Closing  Date (as  hereinafter  defined),  all of the assets of
LifeSpan Growth Fund on that date, excluding a cash reserve (the "Cash Reserve")
to be retained by LifeSpan  Growth Fund  sufficient  in its  discretion  for the
payment  of  the  expenses  of  LifeSpan  Growth  Fund's   dissolution  and  its
liabilities,  but not in excess of the amount contemplated by Section 10E, shall
be delivered as provided in Section 8 to Disciplined Value Fund, in exchange for
and against  delivery to LifeSpan Growth Fund on the Closing Date of a number of
Class A,  Class B and  Class C shares  of  Disciplined  Value  Fund,  having  an
aggregate  net asset value  equal to the value of the assets of LifeSpan  Growth
Fund so transferred and delivered.

      3.  The net  asset  value  of  Class  A,  Class B and  Class C  shares  of
Disciplined Value Fund and the value of the assets of LifeSpan Growth Fund to be
transferred  shall in each case be determined as of the close of business of the
New York Stock Exchange on the Valuation  Date. The computation of the net asset
value of the Class A, Class B and Class C shares of  Disciplined  Value Fund and
the Class A, Class B and Class C shares of LifeSpan Growth Fund shall be done in
the  manner  used  by   Disciplined   Value  Fund  and  LifeSpan   Growth  Fund,
respectively,  in the computation of such net asset value per share as set forth
in their respective prospectuses.  The methods used by Disciplined Value Fund in
such  computation  shall be applied to the  valuation  of the assets of LifeSpan
Growth Fund to be transferred to Disciplined Value Fund.

            LifeSpan Growth Fund shall declare and pay, immediately prior to the
Valuation Date, a dividend or dividends  which,  together with all previous such
dividends,  shall have the effect of  distributing  to  LifeSpan  Growth  Fund's
shareholders all of LifeSpan Growth Fund's investment company taxable income for
taxable years ending on or prior to the Closing Date (computed without regard to
any dividends paid) and all of its net capital gain, if any, realized in taxable
years  ending on or prior to the Closing Date (after  reduction  for any capital
loss carry-forward).

      4.   The   closing   (the   "Closing")   shall  be  at  the   offices   of
OppenheimerFunds,  Inc. (the "Agent"),  Two World Trade Center,  34th Floor, New
York,  New York  10048,  at 4:00 P.M.  New York time on June 12, 1998 or at such
other time or place as the  parties  may  designate  or as  provided  below (the
"Closing  Date").  The business day  preceding  the Closing Date is  hereinafter
referred to as the "Valuation Date."


                                     A-2

<PAGE>



            In the event that on the Valuation  Date either party has,  pursuant
to the  Investment  Company Act of 1940,  as amended (the  "Act"),  or any rule,
regulation  or order  thereunder,  suspended  the  redemption  of its  shares or
postponed payment therefore, the Closing Date shall be postponed until the first
business  day after the date when both parties  have ceased such  suspension  or
postponement;  provided,  however,  that if such suspension shall continue for a
period  of 60 days  beyond  the  Valuation  Date,  then the  other  party to the
Agreement  shall be permitted to terminate  the Agreement  without  liability to
either party for such termination.

      5. In conjunction with the closing,  LifeSpan Growth Fund shall distribute
on a pro rata basis to the shareholders of LifeSpan Growth Fund on the Valuation
Date the Class A, Class B and Class C shares of Disciplined  Value Fund received
by  LifeSpan  Growth  Fund on the  Closing  Date in  exchange  for the assets of
LifeSpan  Growth Fund in complete  liquidation of LifeSpan  Growth Fund; for the
purpose of the  distribution  by  LifeSpan  Growth  Fund of Class A, Class B and
Class C shares of Disciplined Value Fund to its shareholders,  Disciplined Value
Fund will promptly cause its transfer agent to: (a) credit an appropriate number
of Class A, Class B and Class C shares of Disciplined Value Fund on the books of
Disciplined  Value  Fund to each  Class  A,  Class  B and  Class C  shareholder,
respectively of LifeSpan Growth Fund in accordance with a list (the "Shareholder
List") of its  shareholders  received from LifeSpan Growth Fund; and (b) confirm
an  appropriate  number of Class A,  Class B and  Class C shares of  Disciplined
Value Fund to each  shareholder of LifeSpan Growth Fund;  certificates for Class
A,  Class B and Class C shares of  Disciplined  Value  Fund will be issued  upon
written  request of a former  shareholder  of LifeSpan  Growth Fund but only for
whole shares,  with fractional shares credited to the name of the shareholder on
the books of Disciplined Value Fund.

            The Shareholder List shall indicate,  as of the close of business on
the Valuation Date, the name and address of each  shareholder of LifeSpan Growth
Fund, indicating his or her share balance. LifeSpan Growth Fund agrees to supply
the Shareholder List to Disciplined  Value Fund not later than the Closing Date.
Shareholders of LifeSpan  Growth Fund holding  certificates  representing  their
shares  shall not be  required  to  surrender  their  certificates  to anyone in
connection with the reorganization.  After the Closing Date, however, it will be
necessary for such  shareholders  to surrender  their  certificates  in order to
redeem,  transfer  or pledge  the  shares of  Disciplined  Value Fund which they
received.

      6. Within one year after the Closing Date,  LifeSpan Growth Fund shall (a)
either pay or make  provision for payment of all of its  liabilities  and taxes,
and (b)  either  (i)  transfer  any  remaining  amount  of the Cash  Reserve  to
Disciplined Value Fund, if

                                     A-3

<PAGE>



such remaining  amount (as reduced by the estimated cost of  distributing  it to
shareholders)  is not  material  (as  defined  below)  or (ii)  distribute  such
remaining  amount to the  shareholders  of LifeSpan Growth Fund on the Valuation
Date.  Such remaining  amount shall be deemed to be material if the amount to be
distributed,  after  deduction of the  estimated  expenses of the  distribution,
equals or exceeds one cent per share of LifeSpan Growth Fund  outstanding on the
Valuation Date.

      7. Prior to the  Closing  Date,  there shall be  coordination  between the
parties  as  to  their  respective   portfolios  so  that,  after  the  closing,
Disciplined Value Fund will be in compliance with all of its investment policies
and restrictions. Promptly after the Closing, LifeSpan Growth Fund shall deliver
to Disciplined Value Fund two copies of a list setting forth the securities then
owned by LifeSpan Growth Fund. Promptly after the Closing,  LifeSpan Growth Fund
shall provide Disciplined Value Fund a list setting forth the respective federal
income tax bases thereof.

      8.  Portfolio  securities or written  evidence  acceptable to  Disciplined
Value  Fund of record  ownership  thereof  by The  Depository  Trust  Company or
through the Federal Reserve Book Entry System or any other  depository  approved
by  LifeSpan  Growth  Fund  pursuant  to Rule 17f-4 and Rule 17f-5 under the Act
shall be endorsed and  delivered,  or  transferred  by  appropriate  transfer or
assignment documents, by LifeSpan Growth Fund on the Closing Date to Disciplined
Value Fund,  or at its  direction,  to its  custodian  bank,  in proper form for
transfer in such condition as to constitute good delivery  thereof in accordance
with the custom of  brokers  and shall be  accompanied  by all  necessary  state
transfer stamps, if any. The cash delivered shall be in the form of certified or
bank  cashiers'  checks or by bank wire or  intra-bank  transfer  payable to the
order of  Disciplined  Value Fund for the  account of  Disciplined  Value  Fund.
Shares  of  Disciplined   Value  Fund  representing  the  number  of  shares  of
Disciplined  Value Fund being  delivered  against the assets of LifeSpan  Growth
Fund,  registered in the name of LifeSpan  Growth Fund,  shall be transferred to
LifeSpan  Growth  Fund on the  Closing  Date.  Such shares  shall  thereupon  be
assigned  by  LifeSpan  Growth  Fund to its  shareholders  so that the shares of
Disciplined Value Fund may be distributed as provided in Section 5.

            If,  at the  Closing  Date,  LifeSpan  Growth  Fund is unable in the
ordinary course of business to make delivery under this Section 8 to Disciplined
Value Fund of any of its portfolio securities or cash for the reason that any of
such  securities  purchased by LifeSpan  Growth Fund,  or the cash proceeds of a
sale of  portfolio  securities,  prior  to the  Closing  Date  have not yet been
delivered  to  it  or  LifeSpan  Growth  Fund's  custodian,  then  the  delivery
requirements of this Section 8 with respect to said

                                     A-4

<PAGE>



undelivered  securities  or cash will be waived and  LifeSpan  Growth  Fund will
deliver to Disciplined  Value Fund by or on the Closing Date and with respect to
said  undelivered  securities  or  cash  executed  copies  of  an  agreement  or
agreements of assignment in a form reasonably  satisfactory to Disciplined Value
Fund, together with such other documents,  including a due bill or due bills and
brokers'  confirmation  slips as may reasonably be required by Disciplined Value
Fund.

      9.  Disciplined  Value Fund shall not assume the  liabilities  (except for
portfolio  securities  purchased  which  have not  settled  and for  shareholder
redemption  and  dividend  checks  outstanding)  of LifeSpan  Growth  Fund,  but
LifeSpan Growth Fund will,  nevertheless,  use its best efforts to discharge all
known  liabilities,  so far as may be possible,  prior to the Closing Date.  The
cost of printing and mailing the proxies and proxy  statements  will be borne by
LifeSpan Growth Fund.  LifeSpan Growth Fund and Disciplined Value Fund will bear
the cost of  their  respective  tax  opinion.  Any  documents  such as  existing
prospectuses  or annual reports that are included in that mailing will be a cost
of  the  fund  issuing  the  document.   Any  other  out-of-pocket  expenses  of
Disciplined   Value  Fund  and  LifeSpan   Growth  Fund   associated  with  this
reorganization, including legal, accounting and transfer agent expenses, will be
borne by LifeSpan Growth Fund and Disciplined Value Fund,  respectively,  in the
amounts so incurred by each.

      10. The  obligations of Disciplined  Value Fund hereunder shall be subject
to the following conditions:

            A. The Board of Directors of the Company shall have  authorized  the
execution of the Agreement,  and the  shareholders of LifeSpan Growth Fund shall
have approved the  Agreement  and the  transactions  contemplated  thereby,  and
LifeSpan  Growth Fund shall have furnished to  Disciplined  Value Fund copies of
resolutions to that effect certified by the Secretary or an Assistant  Secretary
of the Company;  such  shareholder  approval shall have been by the  affirmative
vote of "a majority of the  outstanding  voting  securities"  (as defined in the
Act) of LifeSpan  Growth Fund at a meeting for which proxies have been solicited
by the Proxy Statement and Prospectus (as hereinafter defined).

            B. Disciplined  Value Fund shall have received an opinion of counsel
to LifeSpan  Growth Fund dated the Closing Date, to the effect that (i) LifeSpan
Growth Fund is a series of the Company  which is a corporation  duly  organized,
validly  existing and in good  standing  under the laws of the State of Maryland
with full powers to carry on its business as then being  conducted  and to enter
into and perform  the  Agreement  (Maryland  counsel may be relied upon for this
opinion); and (ii) that all action necessary to make the Agreement, according to
its terms,  valid,  binding  and  enforceable  on  LifeSpan  Growth  Fund and to
authorize effectively

                                     A-5

<PAGE>



the  transactions  contemplated  by the  Agreement  have been taken by  LifeSpan
Growth Fund.

            C. The  representations  and  warranties  of  LifeSpan  Growth  Fund
contained  herein shall be true and correct at and as of the Closing  Date,  and
Disciplined  Value Fund  shall have been  furnished  with a  certificate  of the
President,  or a Vice President,  or the Secretary or the Assistant Secretary or
the Treasurer of the Company, dated the Closing Date, to that effect.

            D. On the Closing Date, LifeSpan Growth Fund shall have furnished to
Disciplined Value Fund a certificate of the Treasurer or Assistant  Treasurer of
the Company as to the amount of the capital loss  carry-over  and net unrealized
appreciation or depreciation, if any, with respect to LifeSpan Growth Fund as of
the Closing Date.

            E. The Cash  Reserve  shall not  exceed  10% of the value of the net
assets,  nor 30% in value of the gross  assets,  of LifeSpan  Growth Fund at the
close of business on the Valuation Date.

            F. A Registration  Statement on Form N-14 filed by the Company under
the  Securities  Act  of  1933,  as  amended  (the  "1933  Act"),  containing  a
preliminary  form of the Proxy  Statement  and  Prospectus,  shall  have  become
effective under the 1933 Act not later than July 15, 1998.

            G. On the Closing Date, Disciplined Value Fund shall have received a
letter  from  Andrew  J.   Donohue  or  other   senior   executive   officer  of
OppenheimerFunds,  Inc.  acceptable  to  Disciplined  Value Fund,  stating  that
nothing  has come to his or her  attention  which in his or her  judgment  would
indicate  that  as of the  Closing  Date  there  were  any  material  actual  or
contingent liabilities of LifeSpan Growth Fund arising out of litigation brought
against LifeSpan Growth Fund or claims asserted against it, or pending or to the
best of his or her knowledge threatened claims or litigation not reflected in or
apparent from the most recent audited financial statements and footnotes thereto
of LifeSpan  Growth Fund  delivered to Disciplined  Value Fund.  Such letter may
also  include  such  additional  statements  relating to the scope of the review
conducted by such person and his or her  responsibilities and liabilities as are
not unreasonable under the circumstances.

            H. Disciplined Value Fund shall have received an opinion,  dated the
Closing  Date,  of KPMG Peat  Marwick  LLP,  to the same  effect as the  opinion
contemplated by Section 11.E. of this Agreement.

            I. Disciplined  Value Fund shall have  received at the closing all 
of the assets of LifeSpan Growth Fund to be conveyed

                                     A-6

<PAGE>



hereunder,  which  assets  shall be free and clear of all  liens,  encumbrances,
security interests, restrictions and limitations whatsoever.

      11. The  obligations of LifeSpan Growth Fund hereunder shall be subject to
the following conditions:

            A. The Board of Directors of the Company shall have  authorized  the
execution of the  Agreement,  and the  transactions  contemplated  thereby,  and
Disciplined  Value Fund shall have  furnished to LifeSpan  Growth Fund copies of
resolutions to that effect certified by the Secretary or an Assistant  Secretary
of the Company.

            B.  LifeSpan  Growth  Fund's  shareholders  shall have  approved the
Agreement and the transactions contemplated hereby, by an affirmative vote of "a
majority  of the  outstanding  voting  securities"  (as  defined  in the Act) of
LifeSpan Growth Fund, and LifeSpan Growth Fund shall have furnished  Disciplined
Value Fund copies of resolutions to that effect certified by the Secretary or an
Assistant Secretary of the Company.

            C.  LifeSpan  Growth Fund shall have  received an opinion  dated the
Closing  Date of counsel  to  Disciplined  Value  Fund,  to the effect  that (i)
Disciplined Value Fund is a series of the Company and is duly organized, validly
existing and in good standing  under the laws of the State of Maryland with full
powers to carry on its  business as then being  conducted  and to enter into and
perform the Agreement  (Maryland  counsel may be relied upon for this  opinion);
(ii) all action necessary to make the Agreement,  according to its terms, valid,
binding and enforceable upon Disciplined Value Fund and to authorize effectively
the  transactions  contemplated  by the Agreement have been taken by Disciplined
Value  Fund,  and  (iii)  the  shares  of  Disciplined  Value  Fund to be issued
hereunder are duly authorized and when issued will be validly issued, fully-paid
and non-assessable.

            D. The  representations  and  warranties of  Disciplined  Value Fund
contained  herein shall be true and correct at and as of the Closing  Date,  and
LifeSpan  Growth  Fund  shall  have been  furnished  with a  certificate  of the
President,  a Vice  President or the Secretary or an Assistant  Secretary or the
Treasurer of the Company to that effect dated the Closing Date.

            E. LifeSpan  Growth Fund shall have received an opinion of KPMG Peat
Marwick LLP to the effect that the Federal tax  consequences of the transaction,
if carried  out in the manner  outlined  in this Plan of  Reorganization  and in
accordance with (i) LifeSpan Growth Fund's  representation that there is no plan
or  intention  by any Fund  shareholder  who owns 5% or more of LifeSpan  Growth
Fund's outstanding shares, and, to LifeSpan Growth Fund's

                                     A-7

<PAGE>



best knowledge,  there is no plan or intention on the part of the remaining Fund
shareholders,  to redeem,  sell,  exchange or  otherwise  dispose of a number of
Disciplined  Value Fund shares  received in the  transaction  that would  reduce
LifeSpan Growth Fund shareholders' ownership of Disciplined Value Fund shares to
a number of shares  having a value,  as of the Closing Date, of less than 50% of
the value of all of the  formerly  outstanding  Fund shares as of the same date,
and (ii) the  representation  by each of LifeSpan  Growth  Fund and  Disciplined
Value Fund that, as of the Closing Date,  LifeSpan  Growth Fund and  Disciplined
Value Fund will meet the diversification test of Section 368(a)(2)(F)(ii) of the
Code, will be as follows:

                  1. The transactions contemplated by the Agreement will qualify
as a tax-free  "reorganization"  within the meaning of Section  368(a)(1) of the
Code, and under the regulations promulgated thereunder.

                  2. LifeSpan Growth Fund and  Disciplined  Value Fund will each
qualify as a "party to a reorganization" within the meaning of Section 368(b)(2)
of the Code.

                  3. No gain or loss will be recognized by the  shareholders  of
LifeSpan Growth Fund upon the  distribution of shares of beneficial  interest in
Disciplined  Value Fund to the  shareholders of LifeSpan Growth Fund pursuant to
Section 354 of the Code.

                  4.  Under  Section  361(a) of the Code no gain or loss will be
recognized  by LifeSpan  Growth Fund by reason of the transfer of  substantially
all its assets in exchange for shares of Disciplined Value Fund.

                  5.  Under  Section  1032 of the  Code no gain or loss  will be
recognized by Disciplined  Value Fund by reason of the transfer of substantially
all LifeSpan  Growth  Fund's assets in exchange for Class A, Class B and Class C
shares of  Disciplined  Value Fund and  Disciplined  Value Fund's  assumption of
certain liabilities of LifeSpan Growth Fund.

                  6. The shareholders of LifeSpan Growth Fund will have the same
tax  basis and  holding  period  for the  Class A,  Class B or Class C shares of
beneficial  interest in Disciplined Value Fund that they receive as they had for
LifeSpan  Growth  Fund  shares that they  previously  held,  pursuant to Section
358(a) and 1223(1), respectively, of the Code.

                  7. The  securities  transferred  by  LifeSpan  Growth  Fund to
Disciplined  Value Fund will have the same tax basis and  holding  period in the
hands of Disciplined  Value Fund as they had for LifeSpan Growth Fund,  pursuant
to Section 362(b) and 1223(1),

                                     A-8

<PAGE>



respectively, of the Code.

            F. The Cash  Reserve  shall not  exceed  10% of the value of the net
assets,  nor 30% in value of the gross  assets,  of LifeSpan  Growth Fund at the
close of business on the Valuation Date.

            G. A Registration  Statement on Form N-14 filed by the Company under
the  1933  Act,  containing  a  preliminary  form  of the  Proxy  Statement  and
Prospectus,  shall have become  effective under the 1933 Act not later than July
15, 1998.

            H. On the Closing Date,  LifeSpan  Growth Fund shall have received a
letter  from  Andrew  J.   Donohue  or  other   senior   executive   officer  of
OppenheimerFunds,  Inc. acceptable to LifeSpan Growth Fund, stating that nothing
has come to his or her  attention  which in his or her judgment  would  indicate
that as of the  Closing  Date  there  were any  material  actual  or  contingent
liabilities of Disciplined Value Fund arising out of litigation  brought against
Disciplined Value Fund or claims asserted against it, or pending or, to the best
of his or her  knowledge,  threatened  claims or litigation  not reflected in or
apparent by the most recent audited  financial  statements and footnotes thereto
of  Disciplined  Value Fund delivered to LifeSpan  Growth Fund.  Such letter may
also  include  such  additional  statements  relating to the scope of the review
conducted by such person and his or her  responsibilities and liabilities as are
not unreasonable under the circumstances.

            I. LifeSpan Growth Fund shall  acknowledge  receipt of the shares of
Disciplined Value Fund.

      12. The Company on behalf of LifeSpan  Growth Fund hereby  represents  and
warrants that:

            A. The financial  statements  of LifeSpan  Growth Fund as at October
31, 1997  (audited)  heretofore  furnished to  Disciplined  Value Fund,  present
fairly the financial position,  results of operations, and changes in net assets
of LifeSpan Growth Fund as of that date, in conformity  with generally  accepted
accounting principles applied on a basis consistent with the preceding year; and
that from  October 31, 1997  through  the date hereof  there have not been,  and
through the Closing Date there will not be, any material  adverse  change in the
business or financial  condition of LifeSpan Growth Fund, it being agreed that a
decrease in the size of LifeSpan Growth Fund due to a diminution in the value of
its portfolio and/or redemption of its shares shall not be considered a material
adverse change;

            B.  Contingent  upon approval of the Agreement and the  transactions
contemplated  thereby by LifeSpan  Growth Fund's  shareholders,  LifeSpan Growth
Fund has authority to transfer all of

                                     A-9

<PAGE>



the assets of LifeSpan  Growth Fund to be conveyed  hereunder  free and clear of
all  liens,  encumbrances,  security  interests,  restrictions  and  limitations
whatsoever;

            C.  The  Prospectus,  as  amended  and  supplemented,  contained  in
LifeSpan Growth Fund's Registration Statement under the 1933 Act, as amended, is
true,  correct and complete,  conforms to the  requirements  of the 1933 Act and
does not  contain  any untrue  statement  of a material  fact or omit to state a
material fact required to be stated  therein or necessary to make the statements
therein not misleading.  The Registration  Statement, as amended, was, as of the
date of the  filing of the last  Post-Effective  Amendment,  true,  correct  and
complete,  conformed to the requirements of the 1933 Act and did not contain any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein not misleading;

            D. There is no material contingent liability of LifeSpan Growth Fund
and no material claim and no material legal, administrative or other proceedings
pending  or, to the  knowledge  of  LifeSpan  Growth  Fund,  threatened  against
LifeSpan Growth Fund, not reflected in such Prospectus;

            E.  Except  for this  Agreement,  there  are no  material  contracts
outstanding to which  LifeSpan  Growth Fund is a party other than those ordinary
in the conduct of its business;

            F.  LifeSpan  Growth  Fund is a  series  of the  Company  which is a
Maryland corporation duly organized, validly existing and in good standing under
the laws of the State of Maryland;  and has all necessary  and material  Federal
and state  authorizations  to own all of its assets and to carry on its business
as now being  conducted;  and the Company is duly  registered  under the Act and
such  registration  has not been  rescinded  or revoked and is in full force and
effect;

            G. All Federal and other tax returns and reports of LifeSpan  Growth
Fund  required  by law to be filed have been  filed,  and all  Federal and other
taxes shown due on said returns and reports  have been paid or  provision  shall
have been  made for the  payment  thereof  and to the best of the  knowledge  of
LifeSpan  Growth Fund no such return is currently  under audit and no assessment
has been  asserted  with  respect to such  returns  and to the  extent  such tax
returns with respect to the taxable year of LifeSpan  Growth Fund ended  October
31, 1997 have not been filed,  such returns will be filed when  required and the
amount of tax shown as due thereon shall be paid when due; and

            H.  LifeSpan  Growth  Fund has  elected to be treated as a regulated
investment company and, for each fiscal year of its

                                     A-10

<PAGE>



operations, LifeSpan Growth Fund has met the requirements of Subchapter M of the
Code for  qualification  and  treatment  as a regulated  investment  company and
LifeSpan  Growth  Fund  intends to meet such  requirements  with  respect to its
current taxable year.

      13. The Company on behalf of Disciplined  Value Fund hereby represents and
warrants that:

            A. The financial  statements of Disciplined Value Fund as at October
31, 1997 (audited)  heretofore furnished to LifeSpan Growth Fund, present fairly
the  financial  position,  results of  operations,  and changes in net assets of
Disciplined  Value Fund, as of that date, in conformity with generally  accepted
accounting principles applied on a basis consistent with the preceding year; and
that from  October 31, 1997  through  the date hereof  there have not been,  and
through the Closing Date there will not be, any material  adverse changes in the
business or financial  condition of Disciplined  Value Fund, it being understood
that a decrease in the size of Disciplined Value Fund due to a diminution in the
value of its portfolio and/or redemption of its shares shall not be considered a
material or adverse change;

            B. The  Prospectus,  as amended and  supplemented,  contained in the
Company's  Registration  Statement  under the 1933  Act,  is true,  correct  and
complete,  conforms to the requirements of the 1933 Act and does not contain any
untrue statement of a material fact or omit to state a material fact required to
be stated  therein or necessary to make the statements  therein not  misleading.
The Registration Statement, as amended, was, as of the date of the filing of the
last  Post-Effective  Amendment,  true,  correct and complete,  conformed to the
requirements  of the 1933 Act and did not  contain  any  untrue  statement  of a
material fact or omit to state a material fact required to be stated  therein or
necessary to make the statements therein not misleading;

            C.  Except  for  this  Agreement,  there is no  material  contingent
liability of Disciplined Value Fund and no material claim and no material legal,
administrative or other proceedings  pending or, to the knowledge of Disciplined
Value Fund,  threatened  against  Disciplined  Value Fund, not reflected in such
Prospectus;

            D. There are no material contracts  outstanding to which Disciplined
Value Fund is a party other than those ordinary in the conduct of its business;

            E.  Disciplined  Value  Fund is a series of the  Company  which is a
Maryland corporation duly organized, validly existing and in good standing under
the laws of the State of Maryland;  has all necessary  and material  Federal and
state  authorizations  to own all its  properties and assets and to carry on its
business as now being conducted; the shares of Disciplined Value Fund which it

                                     A-11

<PAGE>



issues  to  LifeSpan  Growth  Fund  pursuant  to  the  Agreement  will  be  duly
authorized,  validly issued, fully-paid and non-assessable;  and will conform to
the  description  thereof  contained in  Disciplined  Value Fund's  Registration
Statement,  will be duly  registered  under the 1933 Act and in the states where
registration is required;  and Disciplined  Value Fund is duly registered  under
the Act and such  registration  has not been revoked or rescinded and is in full
force and effect;

            F. All Federal  and other tax  returns  and  reports of  Disciplined
Value Fund  required  by law to be filed have been  filed,  and all  Federal and
other taxes shown due on said  returns and reports  have been paid or  provision
shall have been made for the payment thereof and to the best of the knowledge of
Disciplined Value Fund no such return is currently under audit and no assessment
has been  asserted  with  respect to such  returns  and to the  extent  such tax
returns with respect to the taxable year of Disciplined Value Fund ended October
31, 1997 have not been filed,  such returns will be filed when  required and the
amount of tax shown as due thereon shall be paid when due;

            G.  Disciplined  Value Fund has elected to be treated as a regulated
investment  company  and,  for each fiscal year of its  operations,  Disciplined
Value  Fund  has  met  the   requirements  of  Subchapter  M  of  the  Code  for
qualification  and treatment as a regulated  investment  company and Disciplined
Value Fund intends to meet such requirements with respect to its current taxable
year;

            H. Disciplined Value Fund has no plan or intention (i) to dispose of
any of the  assets  transferred  by  LifeSpan  Growth  Fund,  other  than in the
ordinary  course of business,  or (ii) to redeem or reacquire  any of the shares
issued by it in the  reorganization  other than  pursuant  to valid  requests of
shareholders; and

            I.  After  consummation  of  the  transactions  contemplated  by the
Agreement,  Disciplined  Value  Fund  intends  to  operate  its  business  in  a
substantially unchanged manner.

      14. Each party hereby represents to the other that no broker or finder has
been  employed  by  it  with  respect  to  the  Agreement  or  the  transactions
contemplated  hereby.  Each party also represents and warrants to the other that
the information  concerning it in the Proxy Statement and Prospectus will not as
of its date contain any untrue  statement of a material  fact or omit to state a
fact necessary to make the  statements  concerning it therein not misleading and
that the financial  statements  concerning it will present the information shown
fairly in accordance with generally accepted accounting  principles applied on a
basis  consistent  with the  preceding  year.  Each  party also  represents  and
warrants to the other that the Agreement is valid, binding and enforceable in

                                     A-12

<PAGE>



accordance  with its terms and that the execution,  delivery and  performance of
the Agreement  will not result in any violation of, or be in conflict  with, any
provision of any charter,  by-laws,  contract,  agreement,  judgment,  decree or
order to which it is subject or to which it is a party.  Disciplined  Value Fund
hereby  represents  to and  covenants  with  LifeSpan  Growth Fund that,  if the
reorganization  becomes  effective,  Disciplined  Value  Fund  will  treat  each
shareholder of LifeSpan Growth Fund who received any of Disciplined Value Fund's
shares as a result of the  reorganization  as having  made the  minimum  initial
purchase of shares of Disciplined  Value Fund received by such  shareholder  for
the purpose of making  additional  investments  in shares of  Disciplined  Value
Fund, regardless of the value of the shares of Disciplined Value Fund received.

      15.  Disciplined  Value  Fund  agrees  that it  will  prepare  and  file a
Registration  Statement  on Form N-14 under the 1933 Act which  shall  contain a
preliminary  form of proxy  statement and  prospectus  contemplated  by Rule 145
under the 1933 Act. The final form of such proxy  statement  and  prospectus  is
referred to in the Agreement as the "Proxy Statement and Prospectus." Each party
agrees  that it will use its best  efforts to have such  Registration  Statement
declared  effective  and  to  supply  such  information  concerning  itself  for
inclusion in the Proxy Statement and Prospectus as may be necessary or desirable
in this connection. Oppenheimer LifeSpan Growth Fund covenants and agrees to, as
soon as  practicable  and,  upon  closing,  to  cause  the  cancellation  of its
outstanding shares.

      16. The obligations of the parties, their respective directors,  officers,
agents or others acting on their behalf under the Agreement  shall be subject to
obtaining an exemptive order from the Securities and Exchange  Commission  under
Section  17(a)  of the Act and to the  right of  either  party  to  abandon  and
terminate  the  Agreement  for any reason and there  shall be no  liability  for
damages  or  other  recourse  available  to a  party  not  so  terminating  this
Agreement,  provided,  however,  that in the event that a party shall  terminate
this Agreement without  reasonable  cause, the party so terminating  shall, upon
demand,  reimburse  the party not so  terminating  for all  expenses,  including
reasonable  out-of-pocket  expenses and fees  incurred in  connection  with this
Agreement.

      17. The Agreement may be executed in several  counterparts,  each of which
shall be deemed  an  original,  but all  taken  together  shall  constitute  one
Agreement.  The rights and  obligations  of each party pursuant to the Agreement
shall not be assignable.

      18. All prior or contemporaneous agreements and representations are merged
into the Agreement,  which  constitutes the entire contract  between the parties
hereto.  No  amendment or  modification  hereof shall be of any force and effect
unless in writing and signed by the parties and no party shall be deemed to

                                     A-13

<PAGE>



have waived any  provision  herein for its benefit  unless it executes a written
acknowledgment of such waiver.

      IN WITNESS  WHEREOF,  each of the parties has caused this  Agreement to be
executed and  attested by its officers  thereunto  duly  authorized  on the date
first set forth above.

                         OPPENHEIMER SERIES FUND, INC.,
                                    on behalf of,
                       OPPENHEIMER DISCIPLINED VALUE FUND




                         By:___________________________
                            Andrew J. Donohue, Secretary



                          OPPENHEIMER SERIES FUND, INC.
                                  on behalf of
                        OPPENHEIMER LIFESPAN GROWTH FUND




                       By:________________________________
                          Andrew J. Donohue, Secretary






                                     A-14

<PAGE>


                                                            Exhibit B


                         Average Annual Total Returns
                        for the Periods Ended 10/31/97


                                           1-YEAR   3-YEAR   5-YEAR  10-YEAR


Disciplined Value Fund Class A Shares(1)   20.27%   21.11%   18.70%  17.06%
LifeSpan Growth Fund Class A Shares(1)      6.46%

Disciplined Value Fund Class B Shares(2)   21.61%
LifeSpan Growth Fund Class B Shares(2)      7.07%

Disciplined Value Fund Class C Shares(3)   25.64%
LifeSpan Growth Fund Class C Shares(3)     11.05%

Disciplined Value Fund Class Y Shares(4)   23.62%

Total Returns  include change in share price and  reinvestment  of dividends and
capital gains distributions in a hypothetical  investment for the periods shown.
An  explanation  of the  different  performance  calculations  is in each fund's
Prospectus.

(1) Class A returns  include the current  maximum initial sales charge of 5.75%.
Disciplined Value Fund's maximum sales charge rate for Class A shares was higher
during a portion of some of the periods shown, so that actual results would have
been lower.

(2) Class B returns include the applicable  contingent  deferred sales charge of
5%  (1-year).  Class B shares are subject to an annual 0.75%  asset-based  sales
charge.

(3) Class C returns  reflect the 1%  contingent  deferred  sales  charge for the
1-year result.  Class C shares are subject to an annual 0.75%  asset-based sales
charge.

(4) The Class Y return shown is a cumulative  total return from the inception of
the class on December 16, 1996.


<PAGE>

                         OPPENHEIMER SERIES FUND, INC.
              TWO WORLD TRADE CENTER, NEW YORK, NEW YORK 10048-0203

                                 1-800-525-7048

                       STATEMENT OF ADDITIONAL INFORMATION

                                  APRIL 6, 1998
                       -----------------------------------


This Statement of Additional  Information of Oppenheimer  Series Fund, Inc. (the
"Registrant") consists of this cover page and the following documents:

1.   Prospectus of Oppenheimer  Disciplined  Allocation  Fund dated February 19,
     1998*

2.   Statement of Additional  Information of Oppenheimer  Disciplined Allocation
     Fund dated February 19, 1998*

3.   Prospectus of Oppenheimer LifeSpan Balanced Fund dated February 19, 1998*

4.   Statement of Additional  Information of Oppenheimer  LifeSpan Balanced Fund
     dated February 19, 1998*

5.   Annual Report of Oppenheimer  Disciplined Allocation Fund as of October 31,
     1997*

6.   Annual Report of Oppenheimer LifeSpan Balanced Fund dates as of October 31,
     1997*

7.   Pro  Forma   Financial   Statements,   including  Pro  Forma  Statement  of
     Investments:   Oppenheimer   LifeSpan   Balanced  Fund.  into   Oppenheimer
     Disciplined Allocation Fund*


This Statement of Additional  Information (the "Additional  Statement") is not a
Prospectus.  This Additional  Statement  should be read in conjunction  with the
Proxy Statement and Prospectus of the Registrant  dated April 6, 1998, which may
be obtained by written  request to  OppenheimerFunds  Services,  P.O.  Box 5270,
Denver, Colorado 80217, or by calling at the toll-free number shown above.


- ------------------
* Filed  with  Registrant's  Registration  Statement  on  Form  N-14  (Reg.  No.
333-47049) 2/27/98, and incorporated herein by reference.




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