GLENBROOK LIFE & ANNUITY CO VARIABLE ANNUITY ACCOUNT
497, 1996-05-07
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<PAGE>
          GLENBROOK LIFE AND ANNUITY COMPANY VARIABLE ANNUITY ACCOUNT
                                   OFFERED BY
                       GLENBROOK LIFE AND ANNUITY COMPANY
                               3100 SANDERS ROAD
                           NORTHBROOK, ILLINOIS 60062
                                 1-800/453-6038
        INDIVIDUAL FLEXIBLE PREMIUM DEFERRED VARIABLE ANNUITY CONTRACTS
                             ---------------------
 
This  prospectus  describes  the  STI Classic  Variable  Annuity,  an Individual
Flexible Premium Deferred Variable Annuity Contract ("Contract") designed to aid
you in  long-term  financial planning  and  which  can be  used  for  retirement
planning.
 
The  Contracts are issued  by Glenbrook Life and  Annuity Company ("Company"), a
wholly owned subsidiary  of Allstate Life  Insurance Company. Purchase  payments
for  the Contracts will be allocated to a series of Variable Sub-accounts of the
Glenbrook Life and Annuity Company Variable Annuity Account ("Variable Account")
and/or to one or more of the Fixed Account Options funded through the  Company's
general account.
 
The Variable Sub-accounts invest in shares of the STI Classic Variable Trust and
the  Federated Prime Money Fund II (the "Funds"). The Funds have a total of five
portfolios  available  under  the  Contract.  The  STI  Classic  Variable  Trust
portfolios  include: (1)  Investment Grade Bond;  (2) Capital  Growth; (3) Value
Income; and  (4)  Mid-Cap Equity  (previously  known as  the  Aggressive  Growth
portfolio).  The Federated  Prime Money Fund  II (previously known  as the Prime
Money  Fund)  is  a  portfolio  of  Federated  Insurance  Series  that   invests
exclusively  in money  market instruments. The  Fixed Account  Options include a
Standard Fixed Account and a Guaranteed Maturity Amount Fixed Account.
 
This prospectus presents information you should know before making a decision to
invest in the Contract and the available Investment Alternatives.
 
THE CONTRACTS MAY BE DISTRIBUTED THROUGH BROKER-DEALERS WHICH HAVE RELATIONSHIPS
WITH BANKS  OR OTHER  FINANCIAL  INSTITUTIONS OR  BY  EMPLOYEES OF  SUCH  BANKS;
HOWEVER,  THE CONTRACTS AND  THE INVESTMENTS IN  THE FUNDS ARE  NOT DEPOSITS, OR
OBLIGATIONS OF, OR  GUARANTEED BY  SUCH INSTITUTIONS OR  ANY FEDERAL  REGULATORY
AGENCY. INVESTMENT IN THE CONTRACTS INVOLVE INVESTMENT RISKS, INCLUDING POSSIBLE
LOSS OF PRINCIPAL.
 
                      THESE CONTRACTS ARE NOT FDIC INSURED
 
The  Company has prepared and filed  a Statement of Additional Information dated
May 1, 1996 with  the U.S. Securities  and Exchange Commission.  If you wish  to
receive  the Statement of Additional Information, you  may obtain a free copy by
calling or writing the  Company at the address  above. For your convenience,  an
order  form for the Statement of Additional Information may be found on page B-2
of this  prospectus.  Before ordering,  you  may wish  to  review the  Table  of
Contents  of  the  Statement  of  Additional Information  on  page  B-1  of this
prospectus. The Statement  of Additional  Information has  been incorporated  by
reference into this prospectus.
 
This  Prospectus  is  Valid  Only  When Accompanied  or  Preceded  By  A Current
Prospectus For the STI Classic Variable Trust and the Federated Prime Money Fund
II.
 
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  AND
EXCHANGE COMMISSION, NOR HAS THE COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY
OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
    PLEASE READ THIS PROSPECTUS CAREFULLY AND RETAIN IT FOR FUTURE REFERENCE
 
                  THE DATE OF THIS PROSPECTUS IS MAY 1, 1996.
<PAGE>
2
 
                  The Contract is not available in all states.
 
At  least once  each Contract year,  the Company  will send the  Owner an annual
statement that contains certain information pertinent to the individual  Owner's
Contract.  The annual statement  details values and  specific Contract data that
applies to  each particular  Contract.  The annual  statement does  not  contain
financial  statements of  the Company. The  Company, however, is  subject to the
informational requirements  of  the  Securities  Exchange Act  of  1934  and  in
accordance therewith files reports and other information with the Securities and
Exchange  Commission. Reports and other information  filed by the Company can be
inspected at the public reference facilities maintained by the Commission at 450
Fifth Street,  N.W., Washington,  D.C. 20549.  Copies of  such material  can  be
obtained  from the Public Reference Section  of the Commission, Washington, D.C.
20549 at prescribed rates.
 
THIS PROSPECTUS DOES  NOT CONSTITUTE AN  OFFERING IN ANY  JURISDICTION IN  WHICH
SUCH  OFFERING MAY NOT LAWFULLY BE MADE. NO DEALER, SALESMAN, OR OTHER PERSON IS
AUTHORIZED TO GIVE  ANY INFORMATION  OR MAKE ANY  REPRESENTATIONS IN  CONNECTION
WITH  THIS OFFERING OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN
OR MADE, SUCH OTHER INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON.
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                  PAGE
<S>                                             <C>
Glossary......................................          4
Highlights....................................          6
Summary of Variable Account Expenses..........          8
Condensed Financial Information...............         10
Yield and Total Return Disclosure.............         10
Financial Statements..........................         11
Glenbrook Life and Annuity Company and the
 Variable Account.............................         11
  Glenbrook Life and Annuity Company..........         11
  The Variable Account........................         11
The Funds.....................................         12
  The STI Classic Variable Trust..............         12
  The Federated Prime Money Fund II, a
   Portfolio of Federated Insurance Series....         12
  Investment Advisors for the Portfolios......         13
Fixed Account Options.........................         13
  The Standard Fixed Account..................         13
  The Guaranteed Maturity Amount Fixed
   Account....................................         14
  Example of Interest Crediting During the
   Guarantee Period...........................         14
  Withdrawals or Transfers....................         16
    Market Value Adjustment...................         17
Purchase of the Contracts.....................         17
  Purchase Payment Limits.....................         17
  Free-Look Period............................         17
  Crediting of Purchase Payments..............         18
  Allocation of Purchase Payments.............         18
  Accumulation Units..........................         18
  Accumulation Unit Value.....................         18
  Transfers Among Portfolios..................         18
  Dollar Cost Averaging.......................         19
 
<CAPTION>
                                                  PAGE
<S>                                             <C>
  Automatic Portfolio Rebalancing.............         19
Benefits Under the Contract...................         20
  Withdrawals.................................         20
  Payout Start Date for Income Payments.......         20
  Amount of Variable Account Income
   Payments...................................         20
  Amount of Fixed Account Income Payments.....         21
  Income Plans................................         21
  Death Benefit Payable.......................         22
  Death Benefit Amount........................         22
  Death Benefit Payment Provisions............         22
Charges and Other Deductions..................         23
  Deductions from Purchase Payments...........         23
  Withdrawal Charge (Contingent Deferred Sales
   Charge)....................................         23
  Contract Maintenance Charge.................         24
  Administrative Expense Charge...............         24
  Mortality and Expense Risk Charge...........         24
  Taxes.......................................         25
  Transfer Charges............................         25
  Fund Expenses...............................         25
General Matters...............................         25
  Beneficiary.................................         25
  Assignments.................................         25
  Delay of Payments...........................         25
  Modification................................         26
  Customer Inquiries..........................         26
Federal Tax Matters...........................         26
  Introduction................................         26
  Taxation of Annuities in General............         26
    Tax Deferral..............................         26
</TABLE>
<PAGE>
 
3
<TABLE>
<CAPTION>
                                                  PAGE
    Non-Natural Owners........................         26
<S>                                             <C>
    Diversification Requirements..............         26
    Investor Control..........................         26
    Taxation of Partial and Full
     Withdrawals..............................         27
    Taxation of Annuity Payments..............         27
    Taxation of Annuity Death Benefits........         27
    Penalty Tax on Premature Distributions....         27
    Aggregation of Annuity Contracts..........         27
  Tax Qualified Contracts.....................         28
    Restrictions Under Section 403(b) Plans...         28
  Income Tax Withholding......................         28
Distribution of the Contracts.................         28
Voting Rights.................................         28
Selected Financial Data.......................         29
Management's Discussion and Analysis of
 Financial Condition and Results of
 Operations...................................         30
<CAPTION>
                                                  PAGE
<S>                                             <C>
  General.....................................         30
  Results of Operations.......................         30
  Financial Position..........................         30
  Liquidity and Capital Resources.............         31
Competition...................................         31
Employees.....................................         31
Properties....................................         31
State and Federal Regulation..................         31
Executive Officers and Directors of the
 Company......................................         33
Executive Compensation........................         35
Legal Proceedings.............................         35
Experts.......................................         35
Legal Matters.................................         35
Financial Statements..........................        F-1
Statement of Additional Information: Table of
 Contents.....................................        B-1
Order Form....................................        B-2
Appendix A....................................        A-1
</TABLE>
 
<PAGE>
4
 
                                    GLOSSARY
 
ACCUMULATION UNIT -- A  measure of your ownership  interest in a Sub-account  of
the  Variable  Account prior  to the  Payout Start  Date. Analogous,  though not
identical, to a share owned in a mutual fund.
 
ACCUMULATION UNIT  VALUE  --  The  value of  each  Accumulation  Unit  which  is
calculated each Valuation Date. Each Sub-account of the Variable Account has its
own  distinct Accumulation Unit  Value. Analogous, though  not identical, to the
share price (net asset value) of a mutual fund.
 
ANNUITANT(S) -- The person  or persons whose life  determines the latest  Payout
Start  Date and the amount  and duration of any  income payments for Income Plan
options other than Guaranteed Payments for a Specified Period.
 
BENEFICIARY(IES) -- The  person(s) to  whom any benefits  are due  when a  death
benefit is payable and there is no surviving Owner.
 
COMPANY("WE," "US") -- Glenbrook Life and Annuity Company.
 
CONTRACT  -- The  Glenbrook Life and  Annuity Company  Flexible Premium Deferred
Variable Annuity Contract, known as the "STI Classic Variable Annuity," that  is
described in this prospectus.
 
CONTRACT ANNIVERSARY -- An anniversary of the date that the Contract was issued.
 
CONTRACT  VALUE -- The value of all amounts accumulated under the Contract prior
to the  Payout  Start  Date,  equivalent  to  the  Accumulation  Units  in  each
Sub-account  of the Variable  Account multiplied by  the respective Accumulation
Unit Value, plus the value in the Fixed Account Options.
 
CONTRACT YEAR --  A period  of 12  months starting with  the issue  date or  any
Contract Anniversary.
 
DEATH BENEFIT ANNIVERSARY -- Every seventh Contract Anniversary beginning on the
date  that the Contract  was issued. For  example, the issue  date, 7th and 14th
Contract Anniversaries are the first three Death Benefit Anniversaries.
 
FIXED ACCOUNT OPTIONS -- The Standard Fixed Account and the Guaranteed  Maturity
Amount Fixed Account.
 
GUARANTEE  PERIOD -- A  period of years  for which a  specified effective annual
interest rate is guaranteed by the Company.
 
INCOME PLAN -- One of several ways in which a series of payments are made  after
the  Payout Start Date. Income payments are based on the Contract Value adjusted
by any applicable Market Value Adjustment and any applicable taxes on the Payout
Start Date.  Under a  Fixed Account  option, the  dollar amount  of each  income
payment  does not change over time. Under  a Variable Account option, the dollar
amount of each income payment may change over time, depending on the  investment
experience of the Sub-account or Sub-accounts you choose.
 
INVESTMENT ALTERNATIVES -- The five Sub-accounts of the Variable Account and the
two Fixed Account Options constitute the seven Investment Alternatives.
 
GUARANTEED   MATURITY  AMOUNT  FIXED  SUB-ACCOUNTS  --  These  Sub-accounts  are
distinguished by  Guarantee Period(s)  and the  dates the  period(s) begin.  The
Guaranteed  Maturity  Amount Fixed  Sub-accounts  are established  when purchase
payments are made  and when  previous Sub-accounts  expire and  a new  Guarantee
Period is selected.
 
MARKET VALUE ADJUSTMENT -- The Market Value Adjustment is the adjustment made to
the money distributed from a Sub-account of the Guaranteed Maturity Amount Fixed
Account  prior to the end of the  Guarantee Period under the Contract to reflect
the impact of changes in interest rates between the time the Sub-account of  the
Guaranteed  Maturity  Amount  Fixed  Account was  established  and  the  time of
distribution.
 
OWNER(S)("YOU") --  The  person  or  persons designated  as  the  Owner  in  the
Contract.
 
PAYOUT START DATE -- The date on which income payments begin.
<PAGE>
5
 
VALUATION  DATE  --  Each day  that  the New  York  Stock Exchange  is  open for
business. The  Valuation Date  does  not include  such Federal  and  non-Federal
holidays as are observed by the New York Stock Exchange.
 
VALUATION PERIOD -- The period between successive Valuation Dates, commencing at
the  close of regular trading on the New York Stock Exchange (which is currently
4:00pm Eastern Time) and ending  as of the close of  regular trading on the  New
York Stock Exchange on the next succeeding Valuation Date.
 
VARIABLE ACCOUNT -- Glenbrook Life and Annuity Company Variable Annuity Account,
a  separate investment account established by  the Company to receive and invest
purchase payments paid under the Contracts.
 
VARIABLE SUB-ACCOUNT -- A portion of the Variable Account invested in shares  of
a  Fund's portfolios. The investment performance of each Variable Sub-account is
linked directly to the investment performance of the portfolios.
<PAGE>
6
 
HIGHLIGHTS
 
THE CONTRACT
 
This  Contract  is  designed  for long-term  financial  planning  and retirement
planning. Money can  be allocated to  any combination of  the Funds'  portfolios
and/or  Fixed  Account Options.  You have  access to  your funds  either through
withdrawals of Contract Value or through periodic income payments.
 
You bear the  entire investment  risk for  Contract Values  and income  payments
based  upon  the Variable  Account, because  values will  vary depending  on the
investment performance of  the portfolio(s) you  select. See "Accumulation  Unit
Value," page 18 and "Amount of Variable Account Income Payments," page 20.
 
You  will also bear the investment risk  of adverse changes in interest rates in
the event amounts are prematurely withdrawn or transferred from Sub-accounts  of
the  Guaranteed  Maturity Amount  Fixed  Account. See  "The  Guaranteed Maturity
Amount Fixed Account," page 14.
 
FREE-LOOK
 
You may  cancel the  Contract  any time  within 20  days  after receipt  of  the
Contract  and receive a full refund of  purchase payments allocated to the Fixed
Account Options. Unless a  refund of purchase payments  is required by state  or
federal  law,  purchase  payments  allocated to  the  Variable  Account  will be
returned after an adjustment  to reflect investment gain  or loss that  occurred
from  the date  of allocation through  the date of  cancellation. See "Free-Look
Period," page 17.
 
HOW TO INVEST
 
Your first purchase payment  must be at least  $3,000 (for qualified  contracts,
$2,000).  Subsequent  purchase  payments must  be  at least  $50,  See "Purchase
Payment Limits," page 17.
 
At the time of your application,  you will allocate your purchase payment  among
the   Investment  Alternatives.  In  certain  states,  all  money  allocated  to
Sub-accounts of the  Variable Account  during the  30 day  period following  the
issue  date will be invested in the Federated Prime Money Fund II during that 30
day period. On the  31st day, the  Contract Value in  the Federated Prime  Money
Fund  II  will then  be transferred  to  the Sub-account(s)  you elected  on the
application for the initial  purchase payment and  requested for any  subsequent
purchase  payment.  In  all  other  cases, the  allocation  you  specify  on the
application will  be  effective  immediately. Please  consult  with  your  sales
representative for applicability of this requirement. All allocations must be in
whole  percents  from 0%  to 100%  (total  allocation equals  100%) or  in whole
dollars. Allocations may  be changed by  notifying the Company  in writing.  See
"Allocation of Purchase Payments," page 18.
 
INVESTMENT ALTERNATIVES
 
The Variable Account invests in shares of the STI Classic Variable Trust and the
Federated  Prime Money  Fund II (the  "Funds"). The  Funds have a  total of five
portfolios  available  under  the  Contract.  The  STI  Classic  Variable  Trust
portfolios  include:  the Investment  Grade Bond  portfolio, the  Capital Growth
portfolio, the Value Income  Stock portfolio and  the Mid-Cap Equity  portfolio.
The  Federated Prime Money Fund II is  a portfolio of Federated Insurance Series
that invests  exclusively  in  money  market instruments.  The  assets  of  each
portfolio  are held separately  from the other portfolios  and each has distinct
investment objectives  and  policies which  are  described in  the  accompanying
prospectuses for the Funds. In addition to the Variable Account, Owners can also
allocate all or part of their purchase payments among two Fixed Account Options.
See "Fixed Account Options," on page 13.
 
TRANSFERS AMONG INVESTMENT ALTERNATIVES
 
Prior  to the Payout Start  Date, you may transfer  amounts among the Investment
Alternatives. The Company  reserves the  right to assess  a $10  charge on  each
transfer  in excess of  12 per Contract  Year. The Company  is presently waiving
this charge. Certain Fixed Account  transfers may be restricted. See  "Transfers
Among Portfolios," page 18.
<PAGE>
7
 
You  may  want to  enroll in  a Dollar  Cost Averaging  Program or  an Automatic
Portfolio Rebalancing  Program.  See  "Dollar  Cost  Averaging,"  page  19,  and
"Automatic Portfolio Rebalancing," page 19.
 
CHARGES AND DEDUCTIONS
 
The costs of the Contract include: a contract maintenance charge ($30 annually),
a mortality and expense risk charge (deducted daily, equal on an annual basis to
1.25%  of  the Contract's  daily net  assets  of the  Variable Account),  and an
administrative expense charge (deducted daily, equal on an annual basis to  .10%
of  the  Contract's  daily net  assets  of  the Variable  Account).  The Company
reserves the right to assess a transfer  charge ($10 on each transfer in  excess
of  12 per Contract Year). Additional deductions  may be made for certain taxes.
See "Contract Maintenance Charge," page 24, "Mortality and Expense Risk Charge,"
page 24, "Administrative Expense Charge," page 24, "Transfer Charges," page  25,
and "Taxes," page 25.
 
WITHDRAWALS
 
You  may withdraw all or  part of the Contract Value  before the earliest of the
Payout Start Date,  the death of  any Owner or,  if the Owner  is not a  natural
person,  the death of the  Annuitant. No withdrawal charges  will be deducted on
amounts withdrawn up  to 10%  of the  Contract Value on  the date  of the  first
withdrawal  in a Contract  Year. Amounts withdrawn  in excess of  the 10% may be
subject to a withdrawal charge  of 0% to 7% depending  on how long the  purchase
payments   have  been  invested  in  the  Contract.  Amounts  withdrawn  from  a
Sub-account of the Guaranteed Maturity  Amount Fixed Account, except during  the
30  day period after the  Guarantee Period expires, will  be subject to a Market
Value Adjustment. See "Withdrawals," page  20, "Withdrawals or Transfers,"  page
16, and "Taxation of Annuities in General," page 26.
 
DEATH BENEFIT
 
The Company will pay a death benefit prior to the Payout Start Date on the death
of  any  Owner or,  if the  Owner  is not  a natural  person,  the death  of the
Annuitant. See "Death Benefit Amount," page 22.
 
INCOME PAYMENTS
 
You will receive periodic  income payments beginning on  the Payout Start  Date.
You may choose among several Income Plans to fit your needs. Income payments may
be  received for a specified  period or for life  (either single or joint life),
with or without a guaranteed number of payments. You can select income  payments
that  are fixed, variable  or a combination  of fixed and  variable. See "Income
Plans," page 21.
<PAGE>
8
 
SUMMARY OF VARIABLE ACCOUNT EXPENSES
 
The following table illustrates all expenses  and fees that you will incur.  The
expenses  and  fees  set forth  in  the table  are  based on  charges  under the
Contracts and on the expenses of the Variable Account and the underlying Funds.
 
OWNER TRANSACTION EXPENSES (ALL SUB-ACCOUNTS)
<TABLE>
<S>                                                                          <C>
Sales Load Imposed on Purchases (as a percentage of purchase payments).....         None
Contingent Deferred Sales Charge (as a percentage of purchase payments)....           *
 
<CAPTION>
 
                                                                              APPLICABLE SALES
NUMBER OF COMPLETE YEARS SINCE PURCHASE                                           CHARGE AS
PAYMENT BEING WITHDRAWN WAS MADE                                                A PERCENTAGE
- ---------------------------------------------------------------------------  -------------------
<S>                                                                          <C>
    0 years................................................................              7%
    1 year.................................................................              6%
    2 years................................................................              5%
    3 years................................................................              4%
    4 years................................................................              3%
    5 years................................................................              2%
    6 years................................................................              1%
    7 years or more........................................................              0%
 
Transfer Fee...............................................................               **
Annual Contract Fee........................................................            $30***
 
VARIABLE ACCOUNT ANNUAL EXPENSES (AS A PERCENTAGE OF THE CONTRACT'S AVERAGE NET ASSETS IN THE
 VARIABLE ACCOUNT)
Mortality and Expense Risk Charge..........................................           1.25      %
Administrative Expense Charge..............................................            .10      %
 
Total Variable Account Annual Expenses.....................................           1.35      %
<FN>
- ------------
</TABLE>
 
  * Each Contract Year up to 10% of the Contract Value on the date of the  first
    withdrawal  may  be withdrawn  without a  contingent deferred  sales charge.
    However, any applicable Market Value Adjustment determined as of the date of
    withdrawal will apply.
 
 ** No charges will be imposed on the  first 12 transfers in any Contract  Year.
    The  Company reserves the right to assess  a $10 charge for each transfer in
    excess of 12 in  any Contract Year, excluding  transfers due to dollar  cost
    averaging and automatic portfolio rebalancing.
 
*** The  annual Contract fee will  be waived if total  purchase payments as of a
    Contract Anniversary or upon full withdrawal  are $25,000 or more or if  all
    money is allocated to the Fixed Account Options.
 
       FUND EXPENSES (NET OF VOLUNTARY REDUCTIONS AND REIMBURSEMENTS)(1)
                        (AS A PERCENTAGE OF FUND ASSETS)
 
<TABLE>
<CAPTION>
                                                                           OTHER       TOTAL FUND ANNUAL
PORTFOLIO                                                ADVISORY FEES    EXPENSES         EXPENSES
- -------------------------------------------------------  -------------  ------------  -------------------
<S>                                                      <C>            <C>           <C>
Federated Prime Money Fund II..........................          .0%          .80 %             .80%
Investment Grade Bond..................................          .0%          .75 %             .75%
Capital Growth.........................................          .0%         1.15 %            1.15%
Value Income Stock.....................................          .0%          .95 %             .95%
Mid-Cap Equity.........................................          .0%         1.15 %            1.15%
</TABLE>
 
- ------------
 
(1) Absent   voluntary  reductions  and  reimbursements,  advisory  fees,  other
    expenses and total operating expenses  expressed as a percentage of  average
    net assets of each Fund would be: Federated Prime
<PAGE>
9
    Money  Fund II  -- .50%,  72.04% and 72.54%;  Investment Grade  Bond Fund --
    .74%, 3.57% and 4.31%; Capital Growth Fund -- 1.15%, 2.09% and 3.24%;  Value
    Income  Stock Fund  -- .80%,  1.92% and  2.72%; and  Mid-Cap Equity  Fund --
    1.15%, 2.84% and 3.99%. Fee reductions and reimbursements are voluntary  and
    may  be  terminated  at  any time  after  one  year from  the  date  of this
    prospectus. To the extent the assets of the Funds increase over time, it  is
    anticipated  that the operating expenses identified in this footnote will be
    significantly reduced. Other  expenses prior to  reimbursements and  waivers
    are based on estimated amounts for the current fiscal year.
 
EXAMPLE
 
You  (the  Owner)  would  pay  the following  cumulative  expenses  on  a $1,000
investment, assuming a 5% annual return under the following circumstances:
 
If you terminate your Contract or annuitize for a specified period of less  than
120 months at the end of the applicable time period:
 
<TABLE>
<CAPTION>
PORTFOLIO                                                                        1 YEAR       3 YEARS
- -----------------------------------------------------------------------------  -----------  -----------
<S>                                                                            <C>          <C>
Federated Prime Money Fund II................................................   $      77    $     107
Investment Grade Bond........................................................   $      76    $     105
Capital Growth...............................................................   $      80    $     117
Value Income Stock...........................................................   $      78    $     111
Mid-Cap Equity...............................................................   $      80    $     117
</TABLE>
 
If you do not terminate your Contract or if you annuitize for a specified period
of 120 months or more at the end of the applicable time period:
 
<TABLE>
<CAPTION>
PORTFOLIO                                                                        1 YEAR       3 YEARS
- -----------------------------------------------------------------------------  -----------  -----------
<S>                                                                            <C>          <C>
Federated Prime Money Fund II................................................   $      23    $      71
Investment Grade Bond........................................................   $      23    $      69
Capital Growth...............................................................   $      27    $      82
Value Income Stock...........................................................   $      25    $      76
Mid-Cap Equity...............................................................   $      27    $      82
</TABLE>
 
THE  ABOVE EXAMPLE SHOULD NOT  BE CONSIDERED A REPRESENTATION  OF PAST OR FUTURE
EXPENSE. ACTUAL EXPENSES MAY BE GREATER OR LESS THAN THOSE SHOWN. The purpose of
the example is  to assist you  in understanding the  various costs and  expenses
that  you will bear directly  or indirectly. Premium taxes  are not reflected in
the example but may be applicable.
<PAGE>
10
 
CONDENSED FINANCIAL INFORMATION
 
                       ACCUMULATION UNIT VALUE AND NUMBER
                     OF ACCUMULATION UNITS OUTSTANDING FOR
              EACH SUB-ACCOUNT FROM INCEPTION TO DECEMBER 31, 1995
 
<TABLE>
<S>                                                                          <C>
FEDERATED PRIME MONEY FUND II SUB-ACCOUNT
  Accumulation Unit Value, Beginning of Period.............................  $  10.000
  Accumulation Unit Value, End of Period...................................  $  10.052
  Number of Units Outstanding, End of Period...............................    132,650
INVESTMENT GRADE BOND SUB-ACCOUNT
  Accumulation Unit Value, Beginning of Period.............................  $  10.000
  Accumulation Unit Value, End of Period...................................  $  10.336
  Number of Units Outstanding, End of Period...............................     40,503
CAPITAL GROWTH SUB-ACCOUNT
  Accumulation Unit Value, Beginning of Period.............................  $  10.000
  Accumulation Unit Value, End of Period...................................  $  10.661
  Number of Units Outstanding, End of Period...............................    103,697
VALUE INCOME STOCK SUB-ACCOUNT
  Accumulation Unit Value, Beginning of Period.............................  $  10.000
  Accumulation Unit Value, End of Period...................................  $  10.696
  Number of Units Outstanding, End of Period...............................    124,596
MID-CAP EQUITY SUB-ACCOUNT
  Accumulation Unit Value, Beginning of Period.............................  $  10.000
  Accumulation Unit Value, End of Period...................................  $  10.285
  Number of Units Outstanding, End of Period...............................     80,549
</TABLE>
 
All Sub-Accounts commenced operations on October 6, 1995. The Accumulation  Unit
Values in this table reflect a Mortality and Expense Risk Charge of 1.25% and an
Administrative Expense Charge of 0.10%.
 
YIELD AND TOTAL RETURN DISCLOSURE
 
From  time to time the Variable Account may advertise the yield and total return
investment  performance  of  one  or   more  of  the  Sub-accounts.  Yield   and
standardized   total   return  advertisements   include  charges   and  expenses
attributable to the Contracts. Including these fees has the effect of decreasing
the advertised performance of a Sub-account, so that a Sub-account's  investment
performance will not be directly comparable to that of an ordinary mutual fund.
 
When  a Sub-account advertises its standardized  total return it will usually be
calculated for one year,  five years, and  ten years or  since inception if  the
Sub-account has not been in existence for such periods. Total return is measured
by  comparing the value  of an investment in  the Sub-account at  the end of the
relevant period to the value of the investment at the beginning of the period.
 
In addition to the  standardized total return, the  Sub-account may advertise  a
non-standardized  total return. This  figure will usually  be calculated for one
year, five years, and ten years or other periods. Non-standardized total  return
is measured in the same manner as the standardized total return described above,
except  that  the  withdrawal  charges  under  the  Contract  are  not deducted.
Therefore, a non-standardized total return for a Sub-account can be higher  than
a standardized total return for a Sub-account.
 
Certain  Sub-accounts may advertise yield in addition to total return. The yield
will be computed  in the following  manner: the net  investment income per  unit
earned during a recent one month period is divided by the unit value on the last
day  of  the period,  and then  annualized. This  figure reflects  the recurring
charges at the Variable Account level.
 
The money market Sub-account (the Federated  Prime Money Fund II) may  advertise
its  yield or effective  yield. The yield  refers to the  income generated by an
investment in that Sub-account over a seven-day period.
<PAGE>
11
The income  is then  annualized (i.e.,  the amount  of income  generated by  the
investment  during that week is assumed to be generated each week over a 52-week
period and is shown as a percentage  of the investment). The effective yield  is
calculated  similarly but when annualized, the income earned by an investment in
the money market Sub-account (the Federated  Prime Money Fund II) is assumed  to
be  reinvested at the end of each  seven-day period. The effective yield will be
slightly higher than the yield because of the compounding effect of this assumed
reinvestment during a 52-week period.
 
The Variable  Account  may  also  disclose yield,  standard  total  return,  and
non-standard  total  return for  periods  prior to  the  date that  the Variable
Account commenced operations. For periods prior to the date the Variable Account
commenced operations,  performance  information  for the  Sub-accounts  will  be
calculated  based on the performance of  the underlying Funds and the assumption
that the Sub-accounts were  in existence for  the same periods  as those of  the
underlying  Funds, with  a level  of charges  equal to  those currently assessed
against the Sub-accounts.
 
Please  refer  to  the  Statement  of  Additional  Information  for  a   further
description  of the  method used  to calculate  a Sub-account's  yield and total
return.
 
FINANCIAL STATEMENTS
 
The financial statements of Glenbrook Life  and Annuity Company are on page  F-1
of  the  prospectus.  The financial  statements  of Glenbrook  Life  and Annuity
Company Variable  Annuity  Account are  found  in the  Statement  of  Additional
Information,  which is incorporated by reference  into this prospectus and which
is available upon request. (See order form on page B-2)
 
GLENBROOK LIFE AND ANNUITY COMPANY AND THE VARIABLE ACCOUNT
 
GLENBROOK LIFE AND ANNUITY COMPANY
 
The Company is the issuer of the Contract. The Company is a stock life insurance
company which was organized under the insurance laws of the State of Illinois in
1992. The  Company was  originally organized  under  the laws  of the  State  of
Indiana  in 1965. From  1965 to 1983  the Company was  known as "United Standard
Life Assurance Company" and from 1983 to 1992 the Company was known as  "William
Penn  Life Assurance Company  of America." The Company  is currently licensed to
operate in the District of Columbia and all states except New York. The  Company
intends to market the Contract in those jurisdictions in which it is licensed to
operate  and  which  SunTrust  Banks, Inc.,  through  its  banking subsidiaries,
conducts business. The Company's  home office is located  at 3100 Sanders  Road,
Northbrook, Illinois, 60062.
 
The  Company is  a wholly-owned  subsidiary of  Allstate Life  Insurance Company
("Allstate Life"), a stock life insurance company incorporated under the laws of
the State of Illinois.  Allstate Life is a  wholly-owned subsidiary of  Allstate
Insurance  Company  ("Allstate"), a  stock property-liability  insurance company
incorporated under the laws of Illinois. All of the outstanding capital stock of
Allstate is owned  by The  Allstate Corporation ("Corporation").  In June  1995,
Sears,  Roebuck  and Co.  ("Sears") distributed  in a  tax-free dividend  to its
stockholders its remaining 80.3%  ownership in the Corporation.  As a result  of
the distribution, Sears no longer has an ownership interest in the Corporation.
 
The  Company and Allstate  Life entered into  a reinsurance agreement, effective
June 5, 1992. Under the  reinsurance agreement, fixed account purchase  payments
are  automatically transferred  to Allstate  Life and  become invested  with the
assets of Allstate Life, and Allstate  Life accepts 100% of the liability  under
such  contracts. However, the obligations of Allstate Life under the reinsurance
agreement are to  the Company; the  Company remains the  sole obligor under  the
Contract to the Owners.
 
THE VARIABLE ACCOUNT
 
Established  on  December  15,  1992, the  Glenbrook  Life  and  Annuity Company
Variable Annuity  Account  is  a  unit  investment  trust  registered  with  the
Securities  and Exchange  Commission under the  Investment Company  Act of 1940.
However, such registration does not  signify that the Commission supervises  the
<PAGE>
12
management  or investment  practices or  policies of  the Variable  Account. The
investment performance of the Variable  Account is entirely independent of  both
the  investment performance of the Company's general account and the performance
of any other separate account.
 
The Variable Account  has been  divided into  five Sub-accounts,  each of  which
invests  solely in its corresponding portfolio of the STI Classic Variable Trust
and Federated Prime Money Fund II. Additional Variable Sub-accounts may be added
at the  discretion  of  the  Company. The  Variable  Account  also  funds  other
contracts issued by the Company, which are separately accounted for.
 
The  assets of the Variable Account are held separately from the other assets of
the Company. They are not chargeable with liabilities incurred in the  Company's
other  business operations. Accordingly,  the income, capital  gains and capital
losses, realized or unrealized, incurred on  the assets of the Variable  Account
are  credited to or charged against the  assets of the Variable Account, without
regard to the income, capital gains or  capital losses arising out of any  other
business  the Company may  conduct. The Company's  obligations arising under the
Contracts are general corporate obligations of the Company. The Variable Account
may be  subject  to  liabilities  arising from  Sub-accounts  whose  assets  are
attributable  to other variable contracts offered  by the Variable Account which
are not described in this prospectus.
 
THE FUNDS
 
The Variable Account will invest in shares of the STI Classic Variable Trust and
the Federated Prime Money Fund II  (the "Funds"). The Funds are registered  with
the  Securities  and  Exchange Commission  as  open-end,  diversified management
investment companies. Registration of the Funds does not involve supervision  of
its  management, investment practices or policies by the Securities and Exchange
Commission. The Funds are designed  to provide investment vehicles for  variable
insurance  contracts of various insurance companies, in addition to the Variable
Account.
 
Shares of the portfolios of  the Funds are not  deposits, or obligations of,  or
guaranteed  or endorsed by any bank and  the shares are not federally insured by
the Federal  Deposit Insurance  Corporation, the  Federal Reserve  Board or  any
other agency.
 
THE STI CLASSIC VARIABLE TRUST
 
The  STI  Classic  Variable  Trust  offers four  portfolios  for  use  with this
Contract: the Investment Grade Bond portfolio, the Capital Growth portfolio, the
Value Income Stock portfolio  and the Mid-Cap  Equity portfolio. Each  portfolio
has  different investment  objectives and  policies and  operates as  a separate
investment fund.
 
The Investment Grade Bond portfolio  seeks to provide as  high a level of  total
return through current income and capital appreciation as is consistent with the
preservation  of capital primarily through  investment in investment grade fixed
income securities.
 
The Capital Growth portfolio seeks to provide capital appreciation by  investing
primarily  in a portfolio of common  stocks, warrants and securities convertible
into common  stock  which  in  the advisor's  opinion  are  undervalued  in  the
marketplace at the time of purchase.
 
The  Value  Income Stock  portfolio  seeks to  provide  current income  with the
secondary goal  of  achieving capital  appreciation  by investing  primarily  in
equity securities.
 
The  Mid-Cap Equity portfolio seeks to provide capital appreciation by investing
primarily in  a diversified  portfolio of  common stocks,  preferred stocks  and
securities  convertible into common  stock of small  to mid-sized companies with
above-average growth  of  earnings. Current  income  will not  be  an  important
criterion  of  investment selection  and any  such  income should  be considered
incidental.
 
THE FEDERATED PRIME MONEY FUND II, A PORTFOLIO OF FEDERATED INSURANCE SERIES
 
The investment objective  of the  Federated Prime Money  Fund II  is to  provide
current  income  consistent with  the stability  of  principal and  liquidity by
investing exclusively in a portfolio of money market instruments maturing in 397
days or less.
<PAGE>
13
 
The Federated Prime Money Fund II attempts to maintain a stable net asset  value
of  $1.00 per share; however,  an investment in the  Fund is neither insured nor
guaranteed by  the U.S.  government, and  there  can be  no assurance  that  the
portfolio will maintain a stable $1.00 per share price.
 
INVESTMENT ADVISORS FOR THE PORTFOLIOS
 
STI Capital Management, N.A. ("STI Capital") serves as advisor to the Investment
Grade  Bond, Capital Growth,  Value Income Stock  and Mid-Cap Equity portfolios.
STI Capital  is an  indirect  wholly-owned subsidiary  of SunTrust  Banks,  Inc.
("SunTrust"),  a southeastern regional bank holding company with assets of $46.5
billion as of December 31, 1995.
 
STI Capital, as advisor,  makes the investment decisions  for the assets of  the
portfolios  it advises and continuously  reviews, supervises and administers the
respective portfolio's investment program. STI Capital charges the portfolios an
investment management  fee. These  fees are  part of  the portfolios'  operating
expenses.  See the attached prospectus for the  STI Classic Variable Trust for a
discussion of the Fund's expenses.
 
The investment  advisor for  the  Federated Prime  Money  Fund II  is  Federated
Advisers.
 
There  is  no assurance  that  the portfolios  in  each Fund  will  attain their
respective stated objectives. Additional  information concerning the  investment
objectives and policies of the portfolios can be found in the current prospectus
for each Fund accompanying this prospectus.
 
You  will find  more complete information  about each Fund,  including the risks
associated with each  portfolio, in  the accompanying  prospectuses. You  should
read the prospectus for each Fund in conjunction with this prospectus.
 
THE PROSPECTUS OF EACH FUND SHOULD BE READ CAREFULLY BEFORE ANY DECISION IS MADE
CONCERNING  THE  ALLOCATION  OF  PURCHASE  PAYMENTS  TO  A  PARTICULAR  VARIABLE
SUB-ACCOUNT.
 
FIXED ACCOUNT OPTIONS
 
THE STANDARD FIXED ACCOUNT
 
Purchase payments and transfers allocated  to the Standard Fixed Account  become
part of the general account of the Company, which supports insurance and annuity
obligations.  The general account consists of  the general assets of the Company
other than those in segregated asset accounts.
 
Instead of you bearing the  investment risk, as is the  case for amounts in  the
Variable  Account or in other segregated asset  accounts of the Company, we bear
the investment risk for all amounts in the Standard Fixed Account. We have  sole
discretion  to  invest the  assets  of the  Standard  Fixed Account,  subject to
applicable law. We guarantee  that the amounts allocated  to the Standard  Fixed
Account  will be credited  interest at a  net effective annual  interest rate at
least equal to the minimum guaranteed rate found in the Contract. Currently, the
amount of  interest  credited  in  excess  of  the  guaranteed  rate  will  vary
periodically  at the sole  discretion of the  Company. Any interest  held in the
Standard Fixed Account  does not  entitle an Owner  to share  in the  investment
experience of the general account.
 
Money  allocated to  the Standard  Fixed Account earns  interest for  a one year
period at the current rate  in effect at the time  of allocation. After the  one
year  period, a renewal rate will be  declared. Subsequent renewal dates will be
every twelve months for each payment or transfer. The renewal interest rate will
be guaranteed by  us for  a full  year and  will not  be less  than the  minimum
guaranteed rate found in the Contract.
 
We  may declare more than one interest  rate for different monies based upon the
date of allocation  to the  Standard Fixed  Account. For  current interest  rate
information,  please contact your sales representative or the Company's customer
support unit at 1-800/453-6038.
 
Any interest credited  to amounts  allocated to  the Standard  Fixed Account  in
excess  of the guaranteed rate  found in the Contract  will be determined at the
sole discretion of the Company.
<PAGE>
14
 
Amounts may be transferred from the Sub-accounts of the Variable Account to  the
Standard  Fixed Account, and prior to the Payout Start Date, amounts may also be
transferred from the Standard Fixed Account to any other Investment Alternative.
 
The maximum  amount in  any Contract  Year  which may  be transferred  from  the
Standard  Fixed Account  to any other  Investment Alternative is  limited to the
greater of (1) 25%  of the value in  the Standard Fixed Account  as of the  most
recent  Contract Anniversary; if 25% of the value as of the most recent Contract
Anniversary is less than $1,000,  then up to $1,000  may be transferred; or  (2)
25%  of the  sum of all  purchase payments  and transfers to  the Standard Fixed
Account as of the most recent Contract Anniversary.
 
After the Payout  Start Date no  transfers may  be made from  the Fixed  Account
Options.  Transfers from the Variable Account  to the Standard Fixed Account may
not be  made  for six  months  after  the Payout  Start  Date and  may  be  made
thereafter only once every six months.
 
Full  and partial withdrawals from the Standard Fixed Account may be delayed for
up to six months.
 
THE GUARANTEED MATURITY AMOUNT FIXED ACCOUNT
 
Purchase payments and transfers allocated to one or more of the Sub-accounts  of
the  Guaranteed Maturity Amount Fixed Account become part of the general account
of the  Company. Each  Sub-account  offers a  separate interest  rate  Guarantee
Period.  Guarantee Periods will  be offered at the  Company's discretion and may
range from one to ten years. Presently, the Company offers Guarantee Periods  of
three,  five, seven and ten  years. The Owner must  select the Sub-account(s) in
which to allocate each purchase  payment and transfer. No  less than $50 may  be
allocated  to any one Sub-account.  The Company reserves the  right to limit the
number of additional purchase payments.
 
Interest is credited daily to each Sub-account at a rate which compounds to  the
effective  annual interest rate declared for each Sub-account's Guarantee Period
that has been selected.  The effective annual interest  rate will never be  less
than the minimum guaranteed rate, as found in the Contract.
 
The following example illustrates how the Sub-account value for a Sub-account of
the  Guaranteed  Maturity  Amount  Fixed Account  would  grow  given  an assumed
purchase payment, Guarantee Period, and effective annual interest rate:
 
EXAMPLE OF INTEREST CREDITING DURING THE GUARANTEE PERIOD:
 
<TABLE>
<S>                                                                               <C>
Purchase Payment:...............................................................  $10,000.00
Guarantee Period:...............................................................    5 years
Effective Annual Rate:..........................................................      5.55%
</TABLE>
 
<PAGE>
15
 
                             END OF CONTRACT YEAR:
 
<TABLE>
<CAPTION>
                                                YEAR 1        YEAR 2        YEAR 3        YEAR 4        YEAR 5
                                             ------------  ------------  ------------  ------------  ------------
<S>                                          <C>           <C>           <C>           <C>           <C>
Beginning Sub-Account Value................  $  10,000.00
  X (1 + Effective Annual Rate)                    1.0555
                                             ------------
                                             $  10,555.00
Sub-Account Value at end of Contract                       $  10,555.00
  year 1 X (1 + Effective Annual Rate)                           1.0555
                                                           ------------
                                                           $  11,140.80
Sub-Account Value at end of Contract                                     $  11,140.80
  year 2 X (1 + Effective Annual Rate)                                         1.0555
                                                                         ------------
                                                                         $  11,759.12
Sub-Account Value at end of Contract                                                   $  11,759.12
  year 3 X (1 + Effective Annual Rate)                                                       1.0555
                                                                                       ------------
                                                                                       $  12,411.75
Sub-Account Value at end of Contract                                                                 $  12,411.75
  year 4 X (1 + Effective Annual Rate)                                                                     1.0555
                                                                                                     ------------
Sub-Account Value at end of Guarantee
  Period:                                                                                            $  13,100.60
                                                                                                     ------------
                                                                                                     ------------
</TABLE>
 
TOTAL INTEREST CREDITED IN GUARANTEE PERIOD:  $3,100.60 ($13,100.60 -
$10,000.00)
 
NOTE: The above  illustration assumes no  withdrawals of any  amount during  the
entire  five year  period. A  Market Value  Adjustment would  apply to  any such
interim withdrawal. A  withdrawal charge may  apply to any  amount withdrawn  in
excess  of 10% of  the Contract Value on  the date of the  first withdrawal in a
Contract Year. The hypothetical interest rate is for illustrative purposes  only
and  is not intended to  predict future interest rates  to be declared under the
Contract. Actual interest rates declared for  any given Guarantee Period may  be
more or less than shown above but will never be less than the guaranteed minimum
rate as found in the Contract.
<PAGE>
16
 
The Company has no specific formula for determining the rate of interest that it
will  declare initially or in the future. Such interest rates will be reflective
of investment returns available at the  time of the determination. In  addition,
the  management  of  the Company  may  also  consider various  other  factors in
determining interest  rates, including  regulatory and  tax requirements,  sales
commissions  and administrative expenses borne  by the Company, general economic
trends, and competitive factors. For  current interest rate information,  please
contact  your sales  representative or  the Company's  customer support  unit at
1-800/453-6038.
 
THE MANAGEMENT  OF THE  COMPANY WILL  MAKE  THE FINAL  DETERMINATION AS  TO  THE
INTEREST  RATES TO  BE DECLARED. THE  COMPANY CAN NEITHER  PREDICT NOR GUARANTEE
FUTURE INTEREST RATES TO BE DECLARED.
 
Prior to the end  of a Guarantee Period,  a notice will be  mailed to the  Owner
outlining  the options available at the end of a Guarantee Period. During the 30
day period after a Guarantee Period expires the Owner may:
 
    - take no action and  the Company will  automatically renew the  Sub-account
      value  to a Guarantee Period of the same duration to be established on the
      day the previous Guaranteed Period expired; or
 
    - notify the  Company to  apply the  Sub-account value  to a  new  Guarantee
      Period  or periods  to be  established on  the day  the previous Guarantee
      Period expired; or
 
    - notify the Company to  apply the Sub-account value  to the Standard  Fixed
      Account to be established on the day the Guarantee Period expired; or
 
    - notify  the Company to apply the  Sub-account value to any Sub-accounts of
      the Variable Account on the day we receive the notification.
 
    - receive a portion of the Sub-account value or the entire Sub-account value
      through a partial or full withdrawal that is not subject to a Market Value
      Adjustment. In this case, the amount withdrawn will be deemed to have been
      withdrawn on the date the Guarantee Period expired.
 
The Automatic Laddering  Program allows  the Owner  to choose,  in advance,  one
renewal Guarantee Period for all renewing Sub-accounts. The Owner can select the
Automatic Laddering Program at any time during the accumulation phase, including
on the issue date. The Automatic Laddering Program will continue until the Owner
gives written notice to the Company.
 
WITHDRAWALS OR TRANSFERS:
 
All  withdrawals and  transfers, from a  Sub-account of  the Guaranteed Maturity
Amount Fixed  Account other  than during  the 30  day period  after a  Guarantee
Period expires are subject to a Market Value Adjustment.
 
The main component in determining the amount received by the Owner is the amount
which  was requested; however, there may be adjustments to the requested amount.
A withdrawal charge may  reduce the amount received.  A Market Value  Adjustment
may  apply which would reduce or increase the amount received. Premium taxes and
federal income tax  withholding may  also apply  which would  reduce the  amount
received.
 
The  amount received by the  Owner under a withdrawal  request equals the amount
requested,  adjusted  by  any  Market  Value  Adjustment,  less  any  applicable
withdrawal  charge (based  upon the amount  requested prior to  any Market Value
Adjustment), less premium taxes and withholding (if applicable).
 
Amounts may be transferred from the Sub-accounts of the Variable Account to  the
Guaranteed  Maturity Amount Fixed  Account, and prior to  the Payout Start Date,
amounts may  also  be transferred  from  the Guaranteed  Maturity  Amount  Fixed
Account to any other Investment Alternative.
<PAGE>
17
 
After  the Payout  Start Date no  transfers may  be made from  the Fixed Account
Options. Transfers from the Variable  Account to the Guaranteed Maturity  Amount
Fixed Account may not be made for six months after the Payout Start Date and may
be made thereafter only once every six months.
 
Full  and partial withdrawals from the  Guaranteed Maturity Amount Fixed Account
may be delayed for up to six months.
 
MARKET VALUE ADJUSTMENT
 
The Market Value Adjustment  reflects the relationship  between (1) the  current
effective annual interest rate for the time remaining in the Guarantee Period at
the time of the request for withdrawal or transfer, and (2) the effective annual
interest  rate guaranteed for that Sub-account. Since current interest rates are
based, in part, upon investment yields available at the time, the effect of  the
Market Value Adjustment will be closely related to the levels of such yields. As
such, the Owner bears some investment risk under the Contract.
 
It  is possible, therefore, that should investment yields increase significantly
from the  time the  purchase  payment was  made,  the Market  Value  Adjustment,
withdrawal  charge, premium taxes and  withholding (if applicable), would reduce
the amount received by the Owner upon  full withdrawal of the Contract Value  to
an  amount that is less  than the purchase payment  plus interest at the minimum
guaranteed interest rate under the Contract.
 
Generally, if the  effective annual interest  rate for the  Guarantee Period  is
lower  than the applicable current effective annual interest rate (interest rate
for a period equal to  the time remaining in  the Sub-account), then the  Market
Value  Adjustment will result in a lower amount payable to the Owner. Similarly,
if the effective annual  interest rate for the  Guarantee Period is higher  than
the  applicable current  effective annual interest  rate, then  the Market Value
Adjustment will result in a higher amount payable to the Owner.
 
For example,  assume the  Owner  purchases a  Contract  and selects  an  initial
Guarantee  Period of five years and the Company's effective annual rate for that
duration is 5.55%. Assume that at the end of 3 years, the Owner makes a  partial
withdrawal.  If, at  that later  time, the  current interest  rate for  a 2 year
Guarantee Period is 5.05%,  then the Market Value  Adjustment will be  positive,
which  will result in an increase in the amount payable to the Owner. Similarly,
if the current interest rate for the 2 year Guarantee Period is 6.05%, then  the
Market Value Adjustment will be negative, which will result in a decrease in the
amount payable to the Owner.
 
The formula for calculating the Market Value Adjustment is set forth in Appendix
A  to  this  prospectus  which also  contains  additional  illustrations  of the
application of the Market Value Adjustment.
 
PURCHASE OF THE CONTRACTS
 
PURCHASE PAYMENT LIMITS
 
Your first purchase payment  must be at  least $3,000 unless  the Contract is  a
qualified  Contract, in which case  the first purchase payment  must be at least
$2,000. All subsequent purchase payments must be $50 or more and may be made  at
any  time prior to the  earlier of the Payout Start  Date or your 86th birthday.
Subsequent purchase  payments  may  also  be made  from  your  bank  account  by
automatic transfer.
 
We reserve the right to limit the amount of purchase payments we will accept.
 
FREE-LOOK PERIOD
 
You  may  cancel the  Contract  any time  within 20  days  after receipt  of the
Contract and receive a full refund  of purchase payments allocated to any  Fixed
Account  Option. Unless a  refund of purchase  payments is required  by state or
federal law,  purchase  payments  allocated  to the  Variable  Account  will  be
returned  after an adjustment  to reflect investment gain  or loss that occurred
from the date of  allocation through the date  of cancellation. In states  where
this  procedure has  been approved, all  money allocated to  Sub-accounts of the
Variable Account  during the  30 day  period following  the issue  date will  be
immediately invested in the
<PAGE>
18
Federated  Prime Money Fund II during that 30 day period, after which it will be
allocated pursuant to your  allocation instructions. In  such cases, the  amount
returned  upon cancellation within 20 days after  receipt of the Contract is the
greater of the purchase payment or the Contract Value.
 
CREDITING OF PURCHASE PAYMENTS
 
The initial purchase payment accompanied by a duly completed application will be
credited to the Contract within two business  days of receipt by us at our  home
office.  If an application  is not duly  completed, we will  credit the purchase
payments to the Contract  within five business  days or return  it at that  time
unless  you specifically  consent to us  holding the purchase  payment until the
application is  complete.  We  reserve  the right  to  reject  any  application.
Subsequent  purchase payments will be  credited to the Contract  at the close of
the Valuation Period in which the purchase payment is received.
 
ALLOCATION OF PURCHASE PAYMENTS
 
On the application, you instruct us  how to allocate the purchase payment  among
the  seven Investment Alternatives. Purchase payments  may be allocated in whole
percents, from 0%  to 100%  (total allocation equals  100%) or  in exact  dollar
amounts,  to  any  Investment  Alternative.  Unless  you  notify  us  in writing
otherwise,  subsequent  purchase  payments   are  allocated  according  to   the
allocation for the previous purchase payment.
 
For  contracts issued in certain states,  all money allocated to Sub-accounts of
the Variable Account during the  30 day period following  the issue date of  the
Contract  will be invested in  the Federated Prime Money  Fund II during that 30
day period. On the  31st day, the  Contract Value in  the Federated Prime  Money
Fund  II  will then  be transferred  to  the Sub-account(s)  you elected  on the
application for the initial  purchase payment and  requested for any  subsequent
purchase  payments. This transfer is not subject to a $10 transfer charge and is
not included in  the 12 free  transfers per Contract  Year. Please consult  with
your sales representative for applicability of this requirement.
 
ACCUMULATION UNITS
 
Each  purchase payment allocated to the Variable Account will be credited to the
Contract as Accumulation Units.  For example, if a  $10,000 purchase payment  is
credited to the Contract when the Accumulation Unit value equals $10, then 1,000
Accumulation  Units would be credited to  the Contract. The Variable Account, in
turn, purchases shares of the corresponding portfolio.
 
For a brief summary of how purchase payments allocated to the Fixed Account  are
credited to the Contract, see "Fixed Account Options" on page 13.
 
ACCUMULATION UNIT VALUE
 
The  Accumulation Units in  each Sub-account of the  Variable Account are valued
separately. The value of  Accumulation Units will  change each Valuation  Period
according to the investment performance of the shares purchased by each Variable
Sub-account and the deduction of certain expenses and charges.
 
The  value of an Accumulation  Unit in a Variable  Sub-account for any Valuation
Period equals the value of the Accumulation Unit as of the immediately preceding
Valuation Period, multiplied by the  Net Investment Factor for that  Sub-account
for  the current  Valuation Period.  The Net  Investment Factor  for a Valuation
Period is a number representing the change, since the last Valuation Date in the
value of  Sub-account assets  per Accumulation  Unit due  to investment  income,
realized  or unrealized capital gain or loss,  deductions for taxes, if any, and
deductions for the mortality and expense risk charge and administrative  expense
charge.
 
TRANSFERS AMONG PORTFOLIOS
 
Prior  to  the Payout  Start  Date, you  may  transfer amounts  among Investment
Alternatives. The Company  reserves the  right to assess  a $10  charge on  each
transfer    in   excess   of   12   per   Contract   Year.   Transfers   to   or
<PAGE>
19
from more than one fund on the same day are treated as one transfer. The Company
is presently waiving this charge.  Transfers among Variable Sub-accounts  before
the  Payout Start Date may be made  at any time. See "Withdrawals or Transfers,"
page 16 for the requirements on transfers from the Fixed Account.
 
After the  Payout  Start Date,  transfers  among Sub-accounts  of  the  Variable
Account, or from the Variable Account to the Fixed Account may be made only once
every  six months and may not be made  during the first six months following the
Payout Start Date. After the Payout Start Date, transfers from the Fixed Account
Options are not allowed.
 
Transfers may be made pursuant to telephone instructions if the Owner  completes
the  telephone authorization form on the application or another form provided by
the Company. Telephone  transfer requests  will be  accepted by  the Company  if
received  at  1-800/453-6038  by  3:00 p.m.,  Central  Time.  Telephone transfer
requests received at any other telephone number or after 3:00 p.m., Central Time
will not be accepted by the Company. Telephone transfer requests received before
3:00 p.m., Central Time  are effected at the  next computed value. If  telephone
transfers  are not authorized, transfer  requests must be in  writing, on a form
provided by  the Company.  The  Company utilizes  procedures which  the  Company
believes  will provide reasonable assurance  that telephone authorized transfers
are genuine.  Such procedures  include taping  of telephone  conversations  with
persons  purporting  to  authorize  such  transfers  and  requesting identifying
information from such persons. Accordingly, the Company disclaims any  liability
for losses resulting from such transfers by reason of their allegedly not having
been properly authorized. However, if the Company does not take reasonable steps
to help ensure that such authorizations are valid, the Company may be liable for
such losses.
 
The Company reserves the right to waive the transfer restrictions.
 
DOLLAR COST AVERAGING
 
Transfers  may be made automatically through  Dollar Cost Averaging prior to the
Payout Start  Date.  Dollar Cost  Averaging  permits  the Owner  to  transfer  a
specified  amount every  month from any  Sub-account of the  Variable Account or
from the  Standard Fixed  Account,  to any  other  Sub-account of  the  Variable
Account.  Dollar Cost Averaging cannot be used  to transfer amounts to the Fixed
Account. Transfers made  through Dollar Cost  Averaging are not  assessed a  $10
charge and are not included in the 12 free transfers per Contract Year.
 
The  theory  of Dollar  Cost Averaging  is  that, if  purchases of  equal dollar
amounts are made at fluctuating prices, the aggregate average cost per unit will
be less than the average of the unit prices on the same purchase dates. However,
participation in the  Dollar Cost  Averaging program does  not assure  you of  a
greater  profit from your  purchases under the  program; nor will  it prevent or
alleviate losses in a declining market.
 
AUTOMATIC PORTFOLIO REBALANCING
 
Transfers may  be made  automatically  through Automatic  Portfolio  Rebalancing
prior to the Payout Start Date. By electing Automatic Portfolio Rebalancing, all
of  the  money  allocated  to  Sub-accounts  of  the  Variable  Account  will be
rebalanced to the desired allocation on  a quarterly basis, determined from  the
first date that you decide to rebalance. Each quarter, money will be transferred
among Sub-accounts of the Variable Account to achieve the desired allocation.
 
The  desired  allocation  will  be  the  allocation  initially  selected, unless
subsequently changed. You  may change the  allocation at any  time by giving  us
written  notice. The new allocation will be effective with the first rebalancing
that occurs after  we receive the  written request. We  are not responsible  for
rebalancing that occurs prior to receipt of the written request.
<PAGE>
20
 
Transfers  made through Automatic  Portfolio Rebalancing are  not assessed a $10
charge and are not included in the 12 free transfers per Contract Year.
 
Any money  allocated to  a Fixed  Account Option  will not  be included  in  the
rebalancing.
 
BENEFITS UNDER THE CONTRACT
 
WITHDRAWALS
 
You  may withdraw all  or part of  the Contract Value  at any time  prior to the
earlier of the death of the Owner (the  Annuitant if the Owner is not a  natural
person)  or the Payout  Start Date. The  amount available for  withdrawal is the
Contract Value  next computed  after  the Company  receives  the request  for  a
withdrawal at its home office, adjusted by any Market Value Adjustment, less any
withdrawal   charges,  contract  maintenance  charges  and  any  premium  taxes.
Withdrawals from the Variable Account will be paid within seven days of  receipt
of  the request, subject to postponement in certain circumstances. See "Delay of
Payments," page 25.
 
Money can be withdrawn from the  Variable Account or the Fixed Account  Options.
To  complete the partial withdrawal from  the Variable Account, the Company will
cancel Accumulation  Units  in  an  amount  equal  to  the  withdrawal  and  any
applicable  withdrawal  charge  and  premium  taxes.  The  Owner  must  name the
Investment Alternative  from which  the withdrawal  is to  be made.  If none  is
named, then the withdrawal request is incomplete and cannot be honored.
 
The  minimum partial withdrawal  is $50. If  the Contract Value  after a partial
withdrawal would be less than $2,000, then the Company will treat the request as
one for a termination of the Contract and the entire Contract Value, adjusted by
any Market Value Adjustment,  less any charges and  premium taxes, will be  paid
out.  The Company will, however, require  confirmation of the withdrawal request
before terminating the Contract.
 
Partial  withdrawals  may  also   be  taken  automatically  through   Systematic
Withdrawals  on a  monthly, quarterly,  semi-annual or  annual basis. Systematic
Withdrawals of $50  or more may  be requested at  any time prior  to the  Payout
Start  Date.  At the  Company's discretion,  Systematic  Withdrawals may  not be
offered in  conjunction  with  Dollar  Cost  Averaging  or  Automatic  Portfolio
Rebalancing.
 
Withdrawals  and surrenders may be subject to  income tax and a 10% tax penalty.
This tax is explained in "Federal Tax Matters," on page 26.
 
After the  Payout  Start Date,  withdrawals  are  only permitted  when  you  are
receiving  payments  from  the  Variable  Account  under  an  Income  Plan  with
Guaranteed Payments for a Specified Period. In that case, you may terminate  the
Variable Account portion of the income payments at any time.
 
PAYOUT START DATE FOR INCOME PAYMENTS
 
The  Payout Start  Date is  the day  that income  payments will  start under the
Contract. You may  change the Payout  Start Date  at any time  by notifying  the
Company  in writing of the  change at least 30  days before the scheduled Payout
Start Date. The Payout Start Date must be (a) at least one month after the Issue
Date; and (b) no later  than the day the Annuitant  reaches age 90, or the  10th
anniversary, if later.
 
AMOUNT OF VARIABLE ACCOUNT INCOME PAYMENTS
 
The  amount  of Variable  Account income  payments  depends upon  the investment
experience of the Sub-accounts selected by the Owner and any premium taxes,  the
age and sex of the Annuitant, and the Income Plan chosen. The Company guarantees
that  the  amount of  the  income payment  will not  be  affected by  (1) actual
mortality  experience  and  (2)  the  amount  of  the  Company's  administration
expenses.
 
The  total income payments received may be  more or less than the total purchase
payments made  because  (a)  Variable  Account income  payments  vary  with  the
investment results of the underlying portfolios, and (b) Annuitants may not live
as long as expected.
<PAGE>
21
 
If the actual net investment experience of the Variable Account is less than the
assumed  investment rate,  then the  dollar amount  of the  income payments will
decrease. The dollar amount of  the income payments will  stay level if the  net
investment  experience equals the assumed investment  rate and the dollar amount
of the income payments  will increase if the  net investment experience  exceeds
the  assumed  investment  rate.  For purposes  of  the  Variable  Account income
payments, the assumed investment rate is 3 percent.
 
AMOUNT OF FIXED ACCOUNT INCOME PAYMENTS
 
Income payment amounts derived from any Fixed Account Option are guaranteed  for
the duration of the Income Plan. The income payment based upon any Fixed Account
Option  is calculated by applying the portion of the Contract Value in any Fixed
Account Option on the Payout Start Date, adjusted by any Market Value Adjustment
and less any  applicable premium tax,  to the greater  of the appropriate  value
from the income payment table selected or such other value as we are offering at
that time.
 
INCOME PLANS
 
The  Contracts offered  by this  prospectus contain  income payment  tables that
provide for different benefit payments to men and women of the same age  (except
in states which require unisex annuity tables). Nevertheless, in accordance with
the  U.S. Supreme Court's decision in  ARIZONA GOVERNING COMMITTEE V. NORRIS, in
certain employment-related situations, annuity  tables that do  not vary on  the
basis  of  sex may  be  used. Accordingly,  if  the Contract  is  to be  used in
connection with an employment-related retirement or benefit plan,  consideration
should  be given, in consultation with legal counsel, to the impact of NORRIS on
any such plan before making any contributions under these Contracts.
 
The Income Plan  option selected will  affect the dollar  amount of each  income
payment.  For example,  if an  Income Plan  Guaranteed for  Life is  chosen, the
income payments will be greater than income payments under an Income Plan for  a
Minimum Specified Period and guaranteed thereafter for life.
 
You  may elect  income payments  based on  any Fixed  Account Option  and/or the
Variable Account. The Owner may change the Income Plan until 30 days before  the
Payout Start Date. If an Income Plan is chosen which depends on the Annuitant or
Joint  Annuitant's life,  proof of age  will be required  before income payments
begin. Applicable premium taxes will be assessed. The Income Plans include:
 
   INCOME PLAN 1 -- LIFE INCOME WITH GUARANTEED PAYMENTS
 
   The Company will make  payments for as  long as the  Annuitant lives. If  the
   Annuitant  dies before the  selected number of  guaranteed payments have been
   made, the  Company will  continue  to pay  the  remainder of  the  guaranteed
   payments.
 
   INCOME PLAN 2 -- JOINT AND SURVIVOR LIFE INCOME WITH GUARANTEED PAYMENTS
 
   The  Company will make payments for as  long as either the Annuitant or Joint
   Annuitant, named at the time of Income Plan selection, is living. If both the
   Annuitant  and  the  Joint  Annuitant  die  before  the  selected  number  of
   guaranteed  payments have  been made,  the Company  will continue  to pay the
   remainder of the guaranteed payments.
 
   INCOME PLAN 3 -- GUARANTEED PAYMENTS FOR A SPECIFIED PERIOD
 
   The Company will make payments for a specified period beginning on the Payout
   Start Date. These payments do not depend on the Annuitant's life. The  number
   of months guaranteed may be from 60 to 360.
 
The  mortality and  expense risk charge  will be deducted  from Variable Account
payments even though  the Company does  not bear any  mortality risk. If  Income
Plan 3 is chosen and the proceeds are derived from the Variable Account, you may
terminate  the Contract at any time by  notifying the Company in writing and you
will receive the Contract Value within seven days; however, a withdrawal  charge
may apply if this occurs.
 
In  the event that an Income Plan is  not selected, the Company will make income
payments in  accordance with  Income Plan  1 with  Guaranteed Payments  for  120
Months.  At the Company's  discretion, other Income Plans  may be available upon
request. The Company  currently uses  sex-distinct annuity  tables. However,  if
<PAGE>
22
legislation  is passed by Congress or the states, the Company reserves the right
to use income  payment tables  which do  not distinguish  on the  basis of  sex.
Special rules and limitations may apply to certain qualified contracts.
 
If the Contract Value to be applied to an Income Plan is less than $2,000, or if
the  monthly payments determined  under the Income  Plan are less  than $20, the
Company may pay the Contract Value adjusted by any Market Value Adjustment  less
any  applicable  taxes in  a  lump sum  or change  the  payment frequency  to an
interval which results in income payments of at least $20.
 
DEATH BENEFIT PAYABLE
 
We will pay a death benefit prior to  the Payout Start Date on the death of  any
Owner  or, if the Owner is not a natural person, the death of the Annuitant. The
death benefit is paid  to the Owner as  determined immediately after the  death.
This would be a surviving joint Owner or, if none, the Beneficiary.
 
If  the Annuitant and Joint Annuitant, if applicable, die after the Payout Start
Date, the Company will continue to pay the remainder of the guaranteed  payments
to the Owner.
 
DEATH BENEFIT AMOUNT
 
Prior  to  the Payout  Start Date,  the  death benefit  before any  Market Value
Adjustment is equal to the greatest of:  (a) the Contract Value on the date  the
Company receives a complete request for payment of the death benefit, or (b) for
each  previous Death  Benefit Anniversary  occurring prior  to the  Owner's 80th
birthday, the Contract  Value at  that anniversary; plus  any purchase  payments
made  since  that anniversary;  minus  any amounts  the  Company paid  the Owner
(including income tax  we withheld for  you) since that  anniversary. The  death
benefit  will be adjusted  by any applicable  Market Value Adjustment  as of the
date the Company determines  the death benefit. A  Death Benefit Anniversary  is
every  seventh Contract Anniversary beginning with  the issue date. For example,
the issue date, 7th  and 14th Contract Anniversaries  are the first three  Death
Benefit  Anniversaries. The death benefit will never be less than the sum of all
purchase payments  less any  amounts  previously paid  to the  Owner  (including
income tax withholding).
 
The  value of the death  benefit will be determined at  the end of the Valuation
Period during which the Company receives  a complete request for payment of  the
death benefit, which includes due proof of death.
 
The  Company will  not settle  any death  claim until  it receives  due proof of
death.
 
DEATH BENEFIT PAYMENT PROVISIONS
 
The Owner eligible to receive death benefits has the following options:
 
1.  If the Owner eligible to receive the death benefit is not a natural  person,
    then  the Owner  must receive the  death benefit  in a lump  sum within five
    years of the Date of Death.
 
2.  Otherwise, within 60 days of the date when the death benefit is  calculated,
    the  Owner may elect to receive the death benefit under an Income Plan or in
    a lump sum.
 
    Payments from the  Income Plan  must begin within  one-year of  the Date  of
    Death and must be payable throughout:
 
       -the life of the Owner; or
 
       -a period not to exceed the life expectancy of the Owner; or
 
       -the  life of  the Owner  with payments  guaranteed for  a period  not to
        exceed the life expectancy of the Owner.
 
    Any death benefit payable in  a lump sum must be  paid within five years  of
    the  date of death. If no election is made, funds will be distributed at the
    end of the five year period.
 
3.  If the  surviving spouse of the  deceased Owner is the  new Owner, then  the
    spouse  may  elect one  of  the options  listed  above or  may  continue the
    Contract in the accumulation phase as if the death had not occurred. If  the
    Contract  is continued in  the accumulation phase,  the surviving spouse may
    make a
<PAGE>
23
    single withdrawal of any amount within one year of the date of death without
    incurring  a  withdrawal  charge.  However,  any  applicable  Market   Value
    Adjustment, determined as of the date of the withdrawal, will apply.
 
CHARGES AND OTHER DEDUCTIONS
 
DEDUCTIONS FROM PURCHASE PAYMENTS
 
No  deductions are  made from purchase  payments. Therefore, the  full amount of
every purchase payment is invested in the Investment Alternative(s).
 
WITHDRAWAL CHARGE (CONTINGENT DEFERRED SALES CHARGE)
 
You may withdraw  the Contract  Value at  any time  before the  earliest of  the
Payout  Start Date, the  death of any  Owner or, if  the Owner is  not a natural
person, the death of the Annuitant.
 
There are no withdrawal charges on amounts  withdrawn up to 10% of the  Contract
Value  on the date of the first withdrawal in a Contract Year. Amounts withdrawn
in excess of this may be subject to a withdrawal charge. Amounts not subject  to
a withdrawal charge and not withdrawn in a Contract Year are not carried over to
later  Contract Years. Withdrawal charges, if  applicable, will be deducted from
the amount paid.
 
Free withdrawals and other partial withdrawals will be allocated on a first  in,
first  out basis to purchase payments. For purposes of calculating the amount of
the withdrawal charge, withdrawals  are assumed to  come from purchase  payments
first,  beginning with the  oldest payment. Withdrawals  made after all purchase
payments have been withdrawn,  will not be subject  to a withdrawal charge.  For
partial withdrawals, the amount of payment received by the Owner, any withdrawal
charge,  any applicable taxes and any  Market Value Adjustment, will be deducted
from the Contract Value.
 
Withdrawal charges will be applied to amounts withdrawn in excess of 10% of  the
Contract Value as set forth below:
 
<TABLE>
<CAPTION>
COMPLETE YEARS SINCE                                 APPLICABLE
PURCHASE PAYMENT BEING                               WITHDRAWAL
WITHDRAWN WAS MADE                               CHARGE PERCENTAGE
- ----------------------------------------------  --------------------
<S>                                             <C>
0 years...........................................................7%
1 year............................................................6%
2 years...........................................................5%
3 years...........................................................4%
4 years...........................................................3%
5 years...........................................................2%
6 years...........................................................1%
7 Years or more...................................................0%
</TABLE>
 
Withdrawal  charges will be used to  pay sales commissions and other promotional
or distribution expenses  associated with  the marketing of  the Contracts.  The
Company  does  not  anticipate  that  the  withdrawal  charges  will  cover  all
distribution expenses in connection with the Contract.
 
In addition,  federal and  state  income tax  may  be withheld  from  withdrawal
amounts.  Certain terminations may also be subject to a federal tax penalty. See
"Federal Tax Matters," page 26.
 
The Company will waive any withdrawal charge  prior to the Payout Start Date  if
at least 30 days after the Contract Date any Owner (or Annuitant if the Owner is
not  a natural  person) 1)  is first confined  to a  long term  care facility or
hospital for  at least  90  consecutive days,  confinement  is prescribed  by  a
physician  and  is medically  necessary, and  the request  for a  withdrawal and
adequate written proof of confinement are received  by us no later than 90  days
after  discharge; or, 2) is first diagnosed  by a physician as having a terminal
illness and  a request  for a  withdrawal and  adequate proof  of diagnosis  are
received by us. In addition, the withdrawal charge will be waived on withdrawals
taken to satisfy IRS Required Minimum Distribution Rules for this Contract.
<PAGE>
24
 
CONTRACT MAINTENANCE CHARGE
 
A  contract maintenance charge  is deducted annually from  the Contract Value to
reimburse the Company for its actual costs in maintaining each Contract and  the
Variable Account. The Company guarantees that the amount of this charge will not
exceed  $30 per Contract Year over the life of the Contract. This charge will be
waived if the total  purchase payments are  $25,000 or more or  if all money  is
allocated to the Fixed Account Options on the Contract Anniversary.
 
Maintenance  costs include but  are not limited to  expenses incurred in billing
and collecting purchase payments; keeping records; processing death claims, cash
withdrawals, and policy changes; proxy statements; calculating Accumulation Unit
and Annuity Unit values; and issuing reports to Owners and regulatory  agencies.
The Company does not expect to realize a profit from this charge.
 
Prior  to  the Payout  Start Date,  on each  Contract Anniversary,  the contract
maintenance charge  will  be deducted  from  each Sub-account  of  the  Variable
Account in the same proportion that the Owner's value in each bears to the total
value  in all Sub-accounts of the Variable Account. After the Payout Start Date,
a pro rata share of the annual contract maintenance charge will be deducted from
each income payment. For example, 1/12 of the $30, or $2.50, will be deducted if
there are twelve income  payments during the Contract  Year. The portion of  the
contract  maintenance  charge  proportional to  the  part of  the  Contract Year
elapsed will be deducted from the amount paid upon termination of the Contract.
 
ADMINISTRATIVE EXPENSE CHARGE
 
The Company will deduct an administrative  expense charge which is equal, on  an
annual  basis,  to  .10% of  the  daily net  assets  you have  allocated  to the
Sub-accounts of the Variable  Account. This charge is  designed to cover  actual
administrative  expenses which exceed the revenues from the contract maintenance
charge. The Company  does not  intend to profit  from this  charge. The  Company
believes  that the administrative expense charge and contract maintenance charge
have been  set at  a level  that  will recover  no more  than the  actual  costs
associated  with administering the Contract.  There is no necessary relationship
between the amount of administrative charge imposed on a given Contract and  the
amount of expenses that may be attributable to that Contract.
 
MORTALITY AND EXPENSE RISK CHARGE
 
The  Company will deduct a mortality and  expense risk charge which is equal, on
an annual basis,  to 1.25% of  the daily net  assets you have  allocated to  the
Sub-accounts  of  the  Variable  Account. The  Company  estimates  that  .85% is
attributable to the assumption  of mortality risks and  .40% is attributable  to
the  assumption of expense risks. The Company guarantees that the percentage for
this charge will not increase over the life of the Contract.
 
The mortality  risk arises  from  the Company's  guarantee  to cover  all  death
benefits and to make income payments in accordance with the Income Plan selected
and the Income Payment Tables.
 
The  expense risk arises from the  possibility that the contract maintenance and
administrative expense charge,  both of  which are guaranteed  not to  increase,
will be insufficient to cover actual administrative expenses.
 
If  the mortality and expense risk charge is insufficient to cover the Company's
mortality costs and  excess expenses,  the Company will  bear the  loss. If  the
charge  is more than sufficient, the Company  will retain the balance as profit.
The Company currently  expects a profit  from this charge.  Any such profit,  as
well as any other profit realized by the Company and held in its general account
(which  supports insurance and annuity obligations),  would be available for any
proper corporate purpose, including, but not limited to, payment of distribution
expenses.
<PAGE>
25
 
TAXES
 
The Company  will  deduct  applicable  state  premium  taxes  or  other  similar
policyholder  taxes  relative  to  the  Contract  (collectively  referred  to as
"premium taxes") either  at the Payout  Start Date, or  when a total  withdrawal
occurs. Current premium tax rates range from 0 to 3.5%. The Company reserves the
right to deduct premium taxes from the purchase payments.
 
At  the Payout Start  Date, the charge  for premium taxes  will be deducted from
each Investment Alternative  in the  proportion that  the Owner's  value in  the
Investment Alternative bears to the total Contract Value.
 
TRANSFER CHARGES
 
The Company reserves the right to assess a $10 charge on each transfer in excess
of  12 per Contract Year, excluding  transfers through Dollar Cost Averaging and
Automatic Portfolio Rebalancing. The Company is presently waiving this charge.
 
FUND EXPENSES
 
A complete description  of the expenses  and deductions from  the portfolios  in
each  Fund  is  found  in  the prospectus  for  each  Fund.  This  prospectus is
accompanied by the prospectus for each Fund.
 
GENERAL MATTERS
 
BENEFICIARY
 
Subject to the terms of any  irrevocable Beneficiary designation, the Owner  may
change  the Beneficiary  at any  time by notifying  the Company  in writing. Any
change will be effective at the time it  is signed by the Owner, whether or  not
the  Annuitant is living when the change is received by the Company. The Company
will not, however,  be liable  as to  any payment  or settlement  made prior  to
receiving the written notice.
 
Unless  otherwise provided  in the  Beneficiary designation,  if any Beneficiary
predeceases the  Owner, the  new  Beneficiary will  be:  the Owner's  spouse  if
living;  otherwise,  the Owner's  children, equally,  if living;  otherwise, the
Owner's estate. Multiple Beneficiaries may  be named. Unless otherwise  provided
in the Beneficiary designation, if more than one Beneficiary survives the Owner,
the surviving Beneficiaries will share equally in any amounts due.
 
ASSIGNMENTS
 
The Owner may not assign an interest in a Contract as collateral or security for
a  loan.  Otherwise, the  Owner may  assign periodic  income payments  under the
Contract prior to  the Payout  Start Date.  No Beneficiary  may assign  benefits
under  the Contract  until they  are due.  No assignment  will bind  the Company
unless it is signed by the Owner and filed with the Company. The Company is  not
responsible for the validity of an assignment.
 
DELAY OF PAYMENTS
 
Payment  of any amounts  due from the  Variable Account under  the Contract will
occur within seven days, unless:
 
1.  The New  York Stock  Exchange is  closed for  other than  usual weekends  or
    holidays, or trading on the Exchange is otherwise restricted;
 
2.  An emergency exists as defined by the Securities and Exchange Commission; or
 
3.  The  Securities and Exchange Commission permits  delay for the protection of
    the Owners.
 
Payments or transfers from the Fixed Account Options may be delayed for up to  6
months.
<PAGE>
26
 
MODIFICATION
 
The  Company may not modify the Contract without the consent of the Owner except
to make the  Contract meet  the requirements of  the Investment  Company Act  of
1940,  or to make the  Contract comply with any  changes in the Internal Revenue
Code or any changes required by the Code or by any other applicable law.
 
CUSTOMER INQUIRIES
 
The Owner or any persons interested in the Contract may make inquiries regarding
the Contract by calling or writing your representative or:
 
GLENBROOK LIFE AND ANNUITY COMPANY
3100 SANDERS ROAD
NORTHBROOK, ILLINOIS 60062
1-800/453-6038
 
FEDERAL TAX MATTERS
 
INTRODUCTION
 
THE FOLLOWING  DISCUSSION IS  GENERAL AND  IS NOT  INTENDED AS  TAX ADVICE.  THE
COMPANY  MAKES  NO GUARANTEE  REGARDING  THE TAX  TREATMENT  OF ANY  CONTRACT OR
TRANSACTION  INVOLVING  A  CONTRACT.  Federal,   state,  local  and  other   tax
consequences  of ownership or receipt of distributions under an annuity contract
depend on the  individual circumstances  of each  person. If  you are  concerned
about  any tax  consequences with regard  to your  individual circumstances, you
should consult a competent tax adviser.
 
TAXATION OF ANNUITIES IN GENERAL
 
TAX DEFERRAL
 
Generally, an annuity contract owner is  not taxed on increases in the  Contract
Value until a distribution occurs. This rule applies only where (1) the owner is
a  natural person, and (2) the issuing insurance company, instead of the annuity
owner, is considered the owner for  federal income tax purposes of any  separate
account assets funding the contract.
 
NON-NATURAL OWNERS
 
As  a  general rule,  annuity  contracts owned  by  non-natural persons  are not
treated as annuity contracts for federal  income tax purposes and the income  on
such  contracts is  taxed as  ordinary income received  or accrued  by the owner
during the taxable year.  There are several exceptions  to the general rule  for
contracts  owned by non-natural persons which  are discussed in the Statement of
Additional Information.
 
DIVERSIFICATION REQUIREMENTS
 
For a Contract to be treated as an annuity for federal income tax purposes,  the
investments  in  the  Variable  Account  must  be  "adequately  diversified"  in
accordance with  the standards  provided  in the  Treasury regulations.  If  the
investments  in the  Variable Account are  not adequately  diversified, then the
Contract will  not be  treated as  an annuity  contract for  federal income  tax
purposes  and the Owner will  be taxed on the excess  of the Contract Value over
the investment in the Contract. Although the Company does not have control  over
the  Funds  or their  investments, the  Company  expects the  Funds to  meet the
diversification requirements.
 
INVESTOR CONTROL
 
In  connection  with   the  issuance   of  the  regulations   on  the   adequate
diversification  standards, the  Department of  the Treasury  announced that the
regulations do  not provide  guidance concerning  the extent  to which  contract
owners  may direct their  investments among Sub-accounts  of a variable account.
The Internal
<PAGE>
27
Revenue Service  has previously  stated  in published  rulings that  a  variable
contract  owner will be considered  the owner of separate  account assets if the
owner possesses incidents of  ownership in those assets  such as the ability  to
exercise  investment control  over the assets.  At the  time the diversification
regulations were issued, Treasury announced that guidance would be issued in the
future regarding the  extent that  owners could direct  their investments  among
Sub-accounts  without being  treated as owners  of the underlying  assets of the
Variable Account. It is possible  that Treasury's position, when announced,  may
adversely   affect  the  tax  treatment  of  existing  contracts.  The  Company,
therefore, reserves the right to modify the Contract as necessary to attempt  to
prevent  the Owner from being considered the  federal tax owner of the assets of
the Variable Account.
 
TAXATION OF PARTIAL AND FULL WITHDRAWALS
 
In the case  of a  partial withdrawal  under a  non-qualified contract,  amounts
received  are taxable  to the  extent the  contract value  before the withdrawal
exceeds the investment  in the  contract. In the  case of  a partial  withdrawal
under a qualified contract, the portion of the payment that bears the same ratio
to  the total payment that the investment  in the contract bears to the contract
value, can be excluded  from income. In  the case of a  full withdrawal under  a
non-qualified  contract or  a qualified  contract, the  amount received  will be
taxable only to  the extent it  exceeds the  investment in the  contract. If  an
individual transfers an annuity contract without full and adequate consideration
to  a person other than the individual's  spouse (or to a former spouse incident
to a divorce), the owner  will be taxed on  the difference between the  contract
value  and the investment in the contract at the time of transfer. Other than in
the case of certain qualified contracts, any  amount received as a loan under  a
contract, and any assignment or pledge (or agreement to assign or pledge) of the
contract value is treated as a withdrawal of such amount or portion.
 
TAXATION OF ANNUITY PAYMENTS
 
Generally,  the rule  for income taxation  of payments received  from an annuity
contract provides for the  return of the owner's  investment in the contract  in
equal  tax-free amounts  over the  payment period.  The balance  of each payment
received is  taxable. In  the  case of  variable  annuity payments,  the  amount
excluded  from taxable  income is determined  by dividing the  investment in the
contract by the total number of expected payments. In the case of fixed  annuity
payments,  the  amount excluded  from income  is  determined by  multiplying the
payment by the ratio of the investment in the contract (adjusted for any  refund
feature  or period certain) to the total  expected value of annuity payments for
the term of the contract.
 
TAXATION OF ANNUITY DEATH BENEFITS
 
Amounts may be distributed from an annuity  contract because of the death of  an
owner or annuitant. Generally, such amounts are includible in income as follows:
(1)  if distributed in a lump sum, the amounts are taxed in the same manner as a
full withdrawal or (2) if distributed  under an annuity option, the amounts  are
taxed in the same manner as an annuity payment.
 
PENALTY TAX ON PREMATURE DISTRIBUTIONS
 
There  is a 10% penalty tax on  the taxable amount of any premature distribution
from a non-qualified annuity contract. The penalty tax generally applies to  any
distribution made prior to the owner attaining age 59 1/2. However, there should
be  no penalty  tax on distributions  to owners (1)  made on or  after the owner
attains age 59 1/2; (2) made as a result of the owner's death or disability; (3)
made in substantially equal periodic  payments over life or distributions  under
certain  qualified contracts. Please see the Statement of Additional Information
for a discussion of other situations in which the penalty tax may not apply.
 
AGGREGATION OF ANNUITY CONTRACTS
 
All non-qualified annuity contracts issued by the Company (or its affiliates) to
the same owner during any  calendar year will be  aggregated and treated as  one
annuity   contract  for  purposes  of  determining   the  taxable  amount  of  a
distribution.
<PAGE>
28
 
TAX QUALIFIED CONTRACTS
 
Annuity contracts may be  used as investments with  certain tax qualified  plans
such  as: (1) Individual Retirement Annuities  under Section 408(b) of the Code;
(2) Simplified Employee Pension Plans under Section 408(k) of the Code; (3)  Tax
Sheltered  Annuities under  Section 403(b) of  the Code; (4)  Corporate and Self
Employed Pension and Profit  Sharing Plans; and (5)  State and Local  Government
and  Tax-Exempt Organization Deferred Compensation Plans. In the case of certain
tax qualified plans, the terms  of the plans may  govern the right to  benefits,
regardless of the terms of the contract.
 
RESTRICTIONS UNDER SECTION 403(B) PLANS
 
Section  403(b) of the  Code provides for  tax-deferred retirement savings plans
for employees of certain non-profit and educational organizations. In accordance
with the requirements of Section 403(b), any annuity contract used for a  403(b)
plan   must  provide   that  distributions  attributable   to  salary  reduction
contributions  made  after  12/31/88,  and  all  earnings  on  salary  reduction
contributions, may be made only after the employee attains age 59 1/2, separates
from  service, dies, becomes disabled or on the account of hardship (earnings on
salary reduction  contributions  may  not  be  distributed  on  the  account  of
hardship).
 
INCOME TAX WITHHOLDING
 
The  Company is required to withhold federal income  tax at a rate of 20% on all
"eligible rollover distributions" unless an individual elects to make a  "direct
rollover"  of such  amounts to another  qualified plan  or Individual Retirement
Account or Annuity (IRA). Eligible rollover distributions generally include  all
distributions  from qualified contracts,  excluding IRAs, with  the exception of
(1) required  minimum distributions,  or  (2) a  series of  substantially  equal
periodic  payments made over a  period of at least 10  years, or the life (joint
lives)  of  the  participant  (and  beneficiary).  For  any  distributions  from
non-qualified annuity contracts, or distributions from qualified contracts which
are  not considered eligible rollover distributions, the Company may be required
to withhold federal and  state income taxes unless  the recipient elects not  to
have taxes withheld and properly notifies the Company of such election.
 
DISTRIBUTION OF THE CONTRACTS
 
Allstate  Life Financial Services, Inc.  ("ALFS"), 3100 Sanders Road, Northbrook
Illinois, a wholly  owned subsidiary  of Allstate  Life, acts  as the  principal
underwriter  of the Contracts.  ALFS is registered as  a broker-dealer under the
Securities Act  of 1934  and became  a  member of  the National  Association  of
Securities  Dealers, Inc.  on June  30, 1993.  Contracts are  sold by registered
representatives of broker-dealers or bank  employees who are licensed  insurance
agents  appointed by the Company, either individually or through an incorporated
insurance agency. In some  states, Contracts may be  sold by representatives  or
employees  of  banks  which may  be  acting as  broker-dealers  without separate
registration under the Securities  Exchange Act of 1934,  pursuant to legal  and
regulatory exceptions.
 
Commissions  paid to registered  representatives may vary,  but in aggregate are
not anticipated to exceed 6% of any purchase payment. In addition, under certain
circumstances, certain sellers of the Contracts may be paid persistency  bonuses
which  will take into account,  among other things, the  length of time purchase
payments have been  held under a  Contract, and Contract  Values. A  persistency
bonus  is not  expected to  exceed 0.25%,  on an  annual basis,  of the Contract
Values considered in connection with  the bonus. These commissions are  intended
to cover distribution expenses.
 
The  underwriting  agreement  with  ALFS  provides  for  indemnification  by the
Company, to the principal  underwriter, for liability to  Owners arising out  of
services rendered or Contracts issued.
 
VOTING RIGHTS
 
The  Owner or anyone with  a voting interest in  the Sub-account of the Variable
Account may instruct the Company on how  to vote at shareholder meetings of  the
Funds.  The Company will solicit and cast  each vote according to the procedures
set up by the Funds and to the extent required by law. The Company reserves  the
right to vote the eligible shares in its own right, if subsequently permitted by
the Investment Company Act of 1940, its regulations or interpretations thereof.
<PAGE>
29
 
Fund  shares as to  which no timely  instructions are received  will be voted in
proportion to the  voting instructions which  are received with  respect to  all
Contracts  participating in that Sub-account.  Voting instructions to abstain on
any item to  be voted upon  will be applied  on a pro-rata  basis to reduce  the
votes eligible to be cast.
 
Before  the  Payout Start  Date,  the Owner  holds  the voting  interest  in the
Sub-account of the Variable Account (the number  of votes for the Owner will  be
determined  by dividing the Contract Value  attributable to a Sub-account by the
net asset value per share of the applicable eligible portfolio).
 
After the Payout Start Date, the person receiving income payments has the voting
interest. After the Payout Start Date, the votes decrease as income payments are
made and as  the reserves  for the Contract  decrease. That  person's number  of
votes  will be determined by dividing the reserve for such Contract allocated to
the applicable Sub-account by the net asset value per share of the corresponding
eligible portfolio.
 
SELECTED FINANCIAL DATA
 
The following  selected  financial  data  for the  Company  should  be  read  in
conjunction  with the  financial statements and  notes thereto  included in this
Prospectus beginning on page F-1.
 
GLENBROOK LIFE AND ANNUITY COMPANY
SELECTED FINANCIAL DATA
(IN THOUSANDS)
 
<TABLE>
<CAPTION>
YEAR-END FINANCIAL DATA                                                 1995         1994        1993      1992(2)
- ------------------------------------------------------------------  ------------  ----------  ----------  ---------
<S>                                                                 <C>           <C>         <C>         <C>
For The Years Ended December 31:
  Income Before Taxes.............................................  $      4,455  $    2,017  $      836  $     337
  Net Income......................................................         2,879       1,294         529        212
As of December 31:
  Total Assets(1).................................................     1,409,705     750,245     169,361     12,183
</TABLE>
 
- ------------
(1) The Company adopted  SFAS No.  115, "Accounting for  Certain Instruments  in
    Debt  and  Equity  Securities" on  December  31,  1993. See  Note  3  to the
    Financial Statements.
 
(2) For the period  from April  1, 1992 (date  of acquisition)  to December  31,
    1992.
<PAGE>
30
 
MANAGEMENT'S DISCUSSION AND ANALYSIS
OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
GENERAL
 
The  following highlights significant factors  influencing results of operations
and financial position.
 
Glenbrook Life and  Annuity Company ("the  Company"), which is  wholly owned  by
Allstate  Life Insurance  Company ("Allstate  Life"), currently  issues flexible
premium fixed  annuities,  and  beginning in  1995,  flexible  premium  deferred
variable  annuity contracts through  its Separate Accounts.  The Company markets
its products through banks and other financial institutions.
 
The Company reinsures all  of its annuity deposits  with Allstate Life, and  all
life  insurance  in-force  with  other  reinsurers.  Accordingly,  the financial
results reflected in the Company's statements  of operations relate only to  the
investment  of those assets of the Company  that are not transferred to Allstate
Life or other reinsurers under the reinsurance treaties.
 
Separate Account assets and  liabilities are legally  segregated and carried  at
fair  value  in  the  statements of  financial  position.  The  Separate Account
investment portfolios  were  initially funded  with  a $10  million  seed  money
contribution  from the Company in 1995. Investment income and realized gains and
losses of the Separate  Account investments, other than  the portion related  to
the  Company's  participation, accrue  directly to  the contractholders  (net of
fees)  and,  therefore,  are  not  included  in  the  Company's  statements   of
operations.
 
RESULTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                                                                     1995       1994       1993
                                                                                   ---------  ---------  ---------
                                                                                           $ IN THOUSANDS
<S>                                                                                <C>        <C>        <C>
Net investment income............................................................  $   3,996  $   2,017  $     753
                                                                                   ---------  ---------  ---------
Realized capital gains (losses), after tax.......................................  $     298  $      --  $      54
                                                                                   ---------  ---------  ---------
Net income.......................................................................  $   2,879  $   1,294  $     529
                                                                                   ---------  ---------  ---------
Fixed income securities, at amortized cost.......................................  $  44,112  $  51,527  $   9,543
                                                                                   ---------  ---------  ---------
</TABLE>
 
Net  investment income increased $2.0 million in 1995, and $1.3 million in 1994.
In both  years,  the  increases  were attributable  to  an  increased  level  of
investments,  including  the Company's  participation  in the  Separate Accounts
during 1995, and a $40 million capital contribution received from Allstate  Life
in  the third  quarter of 1994.  Net income  increases of $1.6  million and $0.8
million reflect the change in net investment income in both years.
 
Realized capital gains  after tax of  $0.3 million  in 1995 were  the result  of
sales  of  investments  to  fund the  Company's  participation  in  the Separate
Accounts.
 
FINANCIAL POSITION
 
<TABLE>
<CAPTION>
                                                                                            1995          1994
                                                                                        ------------  ------------
                                                                                              $ IN THOUSANDS
<S>                                                                                     <C>           <C>
Fixed income securities, at fair value................................................  $     48,815  $     49,807
                                                                                        ------------  ------------
Unrealized net capital gains (losses)(1)..............................................  $      5,164  $     (1,720)
                                                                                        ------------  ------------
Separate Account assets, at fair value................................................  $     15,578  $         --
                                                                                        ------------  ------------
Contractholder funds..................................................................  $  1,340,925  $    696,854
                                                                                        ------------  ------------
Reinsurance recoverable from Allstate Life............................................  $  1,340,925  $    696,854
                                                                                        ------------  ------------
</TABLE>
 
- ------------
 
(1)  Unrealized net capital gains (losses) exclude the effect of deferred income
    taxes.
<PAGE>
31
 
Fixed income securities are classified as available for sale and carried in  the
statements  of financial position at fair  value. Although the Company generally
intends  to  hold  its   fixed  income  securities   for  the  long-term,   such
classification  affords  the Company  flexibility in  managing the  portfolio in
response to changes in market conditions.
 
At December 31,  1995 unrealized  capital gains  were $5.2  million compared  to
unrealized  capital losses of $1.7 million at December 31, 1994. The significant
change in the unrealized capital gain/loss position is primarily attributable to
declining interest rates.
 
At December  31, 1995  both contractholder  funds and  amounts recoverable  from
Allstate  Life under reinsurance  treaties reflect an  increase of $644 million.
These increases result from sales of  the Company's single and flexible  premium
deferred  annuities partially offset by surrenders. Reinsurance recoverable from
Allstate Life relates to policy benefit obligations ceded to Allstate Life.
 
The Company's  participation  in  the  Separate Accounts  of  $10.5  million  at
December  31, 1995 is  included in the Separate  Accounts assets. Unrealized net
capital gains arising from the Company's participation in the Separate  Accounts
was $0.3 million, net of tax, at December 31, 1995.
 
LIQUIDITY AND CAPITAL RESOURCES
 
Allstate  Life made  a $40  million capital contribution  to the  Company in the
third quarter of 1994.
 
Under the terms of  intercompany reinsurance agreements,  assets of the  Company
that  relate  to  insurance  in-force, excluding  Separate  Account  assets, are
transferred to  Allstate  Life  or other  reinsurers,  who  maintain  investment
portfolios which support the Company's products.
 
COMPETITION
 
The  Company is engaged in a business  that is highly competitive because of the
large number of  stock and mutual  life insurance companies  and other  entities
competing  in the sale of insurance and annuities. There are approximately 2,000
stock, mutual and  other types  of insurers in  business in  the United  States.
Several   independent   rating  agencies   regularly  evaluate   life  insurers'
claims-paying ability, quality of investments, and overall stability. A.M.  Best
Company assigns A+ (Superior) to Allstate Life which automatically reinsures all
net  business of  the Company.  A.M. Best Company  also assigns  the Company the
rating of A+(r) because  the Company automatically  reinsures all business  with
Allstate   Life.  Standard  &  Poor's  Insurance  Rating  Services  assigns  AA+
(Excellent) to the Company's  claims-paying ability and  Moody's assigns an  Aa3
(Excellent)  financial stability rating  to the Company.  The Company shares the
same ratings of its  parent, Allstate Life Insurance  Company. These ratings  do
not relate to the investment performance of the Variable Account.
 
EMPLOYEES
 
As of December 31, 1995, Glenbrook Life and Annuity Company had approximately 43
employees at its home office in Northbrook, Illinois.
 
PROPERTIES
 
The  Company occupies  office space  provided by  its parent,  Allstate Life, in
Northbrook, Illinois. Expenses associated with these offices are allocated on  a
direct and indirect basis to the Company.
 
STATE AND FEDERAL REGULATION
 
The  insurance business of the Company  is subject to comprehensive and detailed
regulation and supervision throughout the United States.
 
The laws of the various jurisdictions establish supervisory agencies with  broad
administrative powers with respect to licensing to transact business, overseeing
trade  practices, licensing agents, approving policy forms, establishing reserve
requirements, fixing maximum interest rates  on life insurance policy loans  and
minimum
<PAGE>
32
rates  for accumulation of surrender values, prescribing the form and content of
required financial statements and regulating the type and amounts of investments
permitted. Each insurance company  is required to  file detailed annual  reports
with supervisory agencies in each of the jurisdictions in which it does business
and  its operations and accounts are subject  to examination by such agencies at
regular intervals.
 
Under insurance  guaranty fund  law,  in most  states, insurers  doing  business
therein  can  be assessed  up  to prescribed  limits  for contract  owner losses
incurred as  a  result  of  company  insolvencies.  The  amount  of  any  future
assessments on the Company under these laws cannot be reasonably estimated. Most
of these laws do provide, however, that an assessment may be excused or deferred
if it would threaten an insurer's own financial strength.
 
In  addition, several states, including  Illinois, regulate affiliated groups of
insurers, such  as  the Company  and  its affiliates,  under  insurance  holding
company  legislation.  Under such  laws,  intercompany transfers  of  assets and
dividend payments from insurance subsidiaries may be subject to prior notice  or
approval,  depending on the size  of such transfers and  payments in relation to
the financial positions of the companies.
 
Although the  federal  government  generally  does  not  directly  regulate  the
business  of insurance, federal initiatives often have an impact on the business
in  a  variety  of  ways.  Current  and  proposed  federal  measures  which  may
significantly affect the insurance business include employee benefit regulation,
controls  on  medical  care costs,  removal  of barriers  preventing  banks from
engaging in the securities and insurance business, tax law changes affecting the
taxation of insurance companies, the tax treatment of insurance products and its
impact on the relative desirability of various personal investment vehicles, and
proposed legislation to prohibit the use of gender in determining insurance  and
pension rates and benefits.
<PAGE>
33
 
EXECUTIVE OFFICERS AND DIRECTORS OF THE COMPANY
 
The directors and executive officers are listed below, together with information
as  to their ages,  dates of election and  principal business occupations during
the last five years (if other than their present business occupations).
 
LOUIS G. LOWER, II, 50, Chief Executive Officer and Chairman of the Board
(1995)*
He is  also the  President of  Allstate Life  Insurance Company;  President  and
Chairman  of the Board of Allstate Life Insurance Company of New York, Glenbrook
Life Insurance Company, and Northbrook  Life Insurance Company; Chairman of  the
Board  of  Allstate  Settlement Corporation;  Chairman  of the  Board  and Chief
Executive Officer  of Lincoln  Benefit Life  Company and  Surety Life  Insurance
Company;  and  a  Director  of  Allstate  Insurance  Company  and  Allstate Life
Financial Services,  Inc.  Prior to  January  1,  1990, he  was  Executive  Vice
President  of  Allstate  Life  Insurance  Company. From  1990  to  1995,  he was
President and Chairman of the Board of the Company.
 
MARLA G. FRIEDMAN, 42, President, Chief Operating Officer and Director (1995)*
She is also  Vice President  and Director  of Allstate  Life Insurance  Company,
Glenbrook  Life Insurance Company, and Northbrook  Life Insurance Company; and a
Director of Allstate Life Financial Services, Inc. She was elected a Director of
the Company in 1992. Prior to 1995,  she was Vice President and Director of  the
Company.
 
MICHAEL J. VELOTTA, 50, Vice President, Secretary, General Counsel, and Director
(1993)*
He  is also Vice President, Secretary,  General Counsel and Director of Allstate
Life Insurance Company, Allstate Life  Insurance Company of New York,  Glenbrook
Life  Insurance  Company,  Northbrook  Life Insurance  Company  and  Surety Life
Insurance Company; and a Director of  Lincoln Benefit Life Company and  Allstate
Life  Financial Services,  Inc. From 1989  through 1992, he  was Vice President,
Assistant General Counsel of Allstate Insurance Company.
 
PETER H. HECKMAN, 50, Vice President and Director (1992)*
He is also Vice President and Director of Allstate Life Insurance Company;  Vice
President  of  Allstate  Life Insurance  Company  of New  York,  Northbrook Life
Insurance Company, Glenbrook Life Insurance Company; and Director of Surety Life
Insurance Company and Lincoln Benefit Life Company. He was elected a Director of
the Company in 1992. Prior  to 1992, he held all  of the above listed  positions
except the current position with the Company.
 
G. CRAIG WHITEHEAD, 50, Senior Vice President, Assistant Vice President and
Director (1995)*
He  is also  Assistant Vice President  and Director of  Glenbrook Life Insurance
Company and Assistant Vice President  of Allstate Life Insurance Company.  Prior
to 1991, he was a director in the strategic planning area of Allstate.
 
BARRY S. PAUL, 40, Assistant Vice President and Controller (1992)*
He  is  also  Assistant  Vice  President  of  Allstate  Life  Insurance Company;
Assistant Vice  President  and  Corporate Actuary  of  Allstate  Life  Insurance
Company  of New York;  and Assistant Vice President  and Controller of Glenbrook
Life Insurance Company and Northbrook Life Insurance Company. Prior to 1992,  he
held  all of  the above  listed positions except  the current  position with the
Company.
 
JAMES P. ZILS, 44, Treasurer (1995)*
He is  also  Teasurer  of  Allstate  Life  Financial  Services,  Inc.,  Allstate
Settlement Corporation, Allstate Life Insurance Company, Allstate Life Insurance
Company of New York, Northbrook Life Insurance Company, Glenbrook Life Insurance
Company,  The Northbrook Corporation. He is  Treasurer and Vice President of AEI
Group, Inc.,  Allstate International  Inc., Allstate  Motor Club,  Inc.,  Direct
Marketing   Center,  Inc.,   Enterprises  Services   Corporation,  The  Allstate
Foundation, Forestview Mortgage Insurance  Company, Allstate Indemnity  Company,
Allstate  Property and  Casualty, Deerbrook  Insurance Company,  First Assurance
Company, Northbrook Indemnity  Company, Northbrook  National Insurance  Company,
Northbrook  Property and Casualty  Insurance Company. Prior to  1995 he was Vice
President of Allstate  Life Insurance  Company. Prior  to 1993  he held  various
management positions.
<PAGE>
34
 
CASEY J. SYLLA, 52, Chief Investment Officer (1995)*
He  is also Director of Allstate  Insurance Company, Allstate Indemnity Company,
Allstate Property and Casualty  Insurance Company, Deerbrook Insurance  Company,
First Assurance Company, Northbrook Indemnity Company, Northbrook Life Insurance
Company, Northbrook National Insurance Company, Northbrook Property and Casualty
Insurance  Company  and  Allstate  Life  Insurance  Company.  He  is  also Chief
Investment  Officer   of  Allstate   Settlement  Corporation,   The   Northbrook
Corporation,  Allstate Insurance  Company, Allstate  Indemnity Company, Allstate
Property and  Casualty, Deerbrook  Insurance Company,  First Assurance  Company,
Northbrook  Indemnity Company, Northbrook National Insurance Company, Northbrook
Property and Casualty  Insurance Company  and Allstate  Life Insurance  Company.
Prior  to 1995, he  was Senior Vice President  and Executive Officer Investments
for Northwestern Mutual Life Insurance Company.
 
* Date elected to current office.
<PAGE>
35
 
EXECUTIVE COMPENSATION
 
Executive officers of the  Company also serve as  officers of Allstate Life  and
receive  no compensation  directly from the  Company. Some of  the officers also
serve as officers of  other companies affiliated  with the Company.  Allocations
have  been made as to each individual's time  devoted to his or her duties as an
executive officer of the Company.  However, no officer's compensation  allocated
to the Company exceeded $100,000 in 1995. The allocated cash compensation of all
officers  of the Company as  a group for services  rendered in all capacities to
the Company during 1995 totalled $5,976.86. Directors of the Company receive  no
compensation in addition to their compensation as employees of the Company.
 
Shares  of the Company and Allstate Life  are not directly owned by any director
or officer of the Company. The percentage of shares of The Allstate  Corporation
beneficially  owned by any  director, and by  all directors and  officers of the
Company as a group, does not exceed one percent of the class outstanding.
 
                           SUMMARY COMPENSATION TABLE
                         (ALLSTATE LIFE INSURANCE CO.)
 
<TABLE>
<CAPTION>
                                                                                           LONG TERM COMPENSATION
                                                                             --------------------------------------------------
                                                                                        AWARDS                   PAYOUTS
                                                ANNUAL COMPENSATION          ----------------------------  --------------------
                                        -----------------------------------                     (G)
                                                                                 (F)        SECURITIES        (H)
            (A)                            (C)        (D)          (E)       RESTRICTED     UNDERLYING       LTIP        (I)
COMPENSATION NAME               (B)      SALARY      BONUS    OTHER ANNUAL      STOCK        OPTIONS/       PAYOUTS   ALL OTHER
AND PRINCIPAL POSITION         YEAR        ($)        ($)     COMPENSATION    AWARD(S)       SARS (#)         ($)        ($)
- ---------------------------  ---------  ---------  ---------  -------------  -----------  ---------------  ---------  ---------
<S>                          <C>        <C>        <C>        <C>            <C>          <C>              <C>        <C>
Louis G. Lower, II.........       1995  $ 416,000  $ 266,175    $  17,044     $ 199,890            N/A     $ 411,122  $   5,250(1)
 Chief Executive Officer
 and                              1994  $ 389,050  $  26,950    $  25,889     $ 170,660            N/A             0  $   1,890(1)
 Chairman of the Board            1993  $ 374,200  $ 294,683    $  52,443     $ 318,625            N/A     $  13,451  $   6,296(1)
 of Directors
</TABLE>
 
- ---------------
(1)  Amount received by Mr.  Lower which represents the  value allocated to  his
     account  from employer contributions  under the Profit  Sharing Fund and to
     its predecessor, The Savings and Profit Sharing Fund of Sears employees.
 
LEGAL PROCEEDINGS
 
From time to time the Company  is involved in pending and threatened  litigation
in  the normal course of  its business in which  claims for monetary damages are
asserted. Management, after consultation with legal counsel, does not anticipate
the ultimate liability  arising from  such pending or  threatened litigation  to
have a material effect on the financial condition of the Company.
 
EXPERTS
 
The  financial statements of  the Variable Account  incorporated by reference in
this prospectus, and the financial  statements and financial statement  schedule
of  the Company  included in  this prospectus  have been  audited by  Deloitte &
Touche LLP, Two Prudential  Plaza, 180 North  Stetson Avenue, Chicago,  Illinois
60601-6779,  independent auditors, as stated  in their reports appearing herein,
and incorporated by reference in this  prospectus, and are included in  reliance
upon  the  reports  of  such  firm given  upon  their  authority  as  experts in
accounting and auditing.
 
LEGAL MATTERS
 
Certain legal matters relating to the federal securities laws applicable to  the
issue  and sale of the  Contracts have been passed  upon by Routier and Johnson,
P.C., of  Washington,  D.C.  All  matters of  Illinois  law  pertaining  to  the
Contracts,  including the validity  of the Contracts and  the Company's right to
issue such Contracts  under Illinois  insurance law,  have been  passed upon  by
Michael J. Velotta, General Counsel of the Company.
<PAGE>
                          INDEPENDENT AUDITORS' REPORT
 
TO THE BOARD OF DIRECTORS AND SHAREHOLDER OF
GLENBROOK LIFE AND ANNUITY COMPANY:
 
We  have audited the accompanying Statements  of Financial Position of Glenbrook
Life and Annuity  Company as  of December  31, 1995  and 1994,  and the  related
Statements  of Operations, Shareholder's  Equity and Cash Flows  for each of the
three years in  the period  ended December 31,  1995. Our  audits also  included
Schedule  IV -- Reinsurance. These  financial statements and financial statement
schedule are the responsibility of the Company's management. Our  responsibility
is  to express an opinion on  these financial statements and financial statement
schedule based on our audits.
 
We  conducted  our  audits  in  accordance  with  generally  accepted   auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence  supporting
the  amounts and disclosures in the financial statements. An audit also includes
assessing the  accounting  principles used  and  significant estimates  made  by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
In our  opinion,  such financial  statements  present fairly,  in  all  material
respects,  the financial  position of Glenbrook  Life and Annuity  Company as of
December 31, 1995 and 1994, and the results of its operations and its cash flows
for each of the three years in the period ended December 31, 1995 in  conformity
with generally accepted accounting principles. Also, in our opinion, Schedule IV
- --  Reinsurance, when considered  in relation to  the basic financial statements
taken as a whole, presents fairly, in all material respects, the information set
forth therein.
 
As discussed in Note 3 to the financial statements, in 1993 the Company  changed
its method of accounting for investments in fixed income securities.
 
/s/ DELOITTE & TOUCHE LLP
Chicago, Illinois
 
March 1, 1996
 
                                      F-1
<PAGE>
                       GLENBROOK LIFE AND ANNUITY COMPANY
                        STATEMENTS OF FINANCIAL POSITION
 
<TABLE>
<CAPTION>
                                                                                                      DECEMBER 31,
                                                                                                ------------------------
                                                                                                    1995         1994
                                                                                                ------------  ----------
                                                                                                    ($ IN THOUSANDS)
<S>                                                                                             <C>           <C>
Assets
  Investments
    Fixed income securities
      Available for sale, at fair value (amortized cost $44,112 and $51,527)..................  $     48,815  $   49,807
    Short-term................................................................................         2,102         924
                                                                                                ------------  ----------
        Total investments.....................................................................        50,917      50,731
  Reinsurance recoverable from Allstate Life Insurance Company................................     1,340,925     696,854
  Cash........................................................................................           264
  Deferred income taxes.......................................................................                       542
  Other assets................................................................................         2,021       2,118
  Separate Accounts...........................................................................        15,578
                                                                                                ------------  ----------
        Total assets..........................................................................  $  1,409,705  $  750,245
                                                                                                ------------  ----------
                                                                                                ------------  ----------
Liabilities
  Contractholder funds........................................................................  $  1,340,925  $  696,854
  Income taxes payable........................................................................         1,637         605
  Deferred income taxes.......................................................................         1,828
  Net payable to Allstate Life Insurance Company..............................................           255         128
  Separate Accounts...........................................................................         5,048
                                                                                                ------------  ----------
        Total liabilities.....................................................................     1,349,693     697,587
                                                                                                ------------  ----------
Shareholder's equity
  Common stock ($500 par value, 4,200 shares authorized, issued, and outstanding).............         2,100       2,100
  Additional capital paid-in..................................................................        49,641      49,641
  Unrealized net capital gains (losses).......................................................         3,357      (1,118)
  Retained income.............................................................................         4,914       2,035
                                                                                                ------------  ----------
        Total shareholder's equity............................................................        60,012      52,658
                                                                                                ------------  ----------
        Total liabilities and shareholder's equity............................................  $  1,409,705  $  750,245
                                                                                                ------------  ----------
                                                                                                ------------  ----------
</TABLE>
 
                       See notes to financial statements.
 
                                      F-2
<PAGE>
                       GLENBROOK LIFE AND ANNUITY COMPANY
                            STATEMENTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                                                                                YEAR ENDED DECEMBER 31,
                                                                                            -------------------------------
                                                                                              1995       1994       1993
                                                                                            ---------  ---------  ---------
                                                                                                   ($ IN THOUSANDS)
<S>                                                                                         <C>        <C>        <C>
Revenues
  Net investment income...................................................................  $   3,996  $   2,017  $     753
  Realized capital gains (losses).........................................................        459                    83
                                                                                            ---------  ---------  ---------
Income before income taxes................................................................      4,455      2,017        836
Income tax expense........................................................................      1,576        723        307
                                                                                            ---------  ---------  ---------
Net income................................................................................  $   2,879  $   1,294  $     529
                                                                                            ---------  ---------  ---------
                                                                                            ---------  ---------  ---------
</TABLE>
 
                       See notes to financial statements.
 
                                      F-3
<PAGE>
                       GLENBROOK LIFE AND ANNUITY COMPANY
                       STATEMENTS OF SHAREHOLDER'S EQUITY
 
<TABLE>
<CAPTION>
                                                                           ADDITIONAL   UNREALIZED NET
                                                                COMMON       CAPITAL    CAPITAL GAINS    RETAINED
                                                                 STOCK       PAID-IN       (LOSSES)       INCOME       TOTAL
                                                              -----------  -----------  --------------  -----------  ---------
                                                                                      ($ IN THOUSANDS)
<S>                                                           <C>          <C>          <C>             <C>          <C>
Balance, December 31, 1992..................................   $   2,100    $   9,641     $      (10)    $     212   $  11,943
  Net income................................................                                                   529         529
  Change in unrealized net capital gains and losses.........                                     703                       703
                                                              -----------  -----------       -------    -----------  ---------
Balance, December 31, 1993..................................       2,100        9,641            693           741      13,175
  Net income................................................                                                 1,294       1,294
  Capital contribution......................................                   40,000                                   40,000
  Change in unrealized net capital gains and losses.........                                  (1,811)                   (1,811)
                                                              -----------  -----------       -------    -----------  ---------
Balance, December 31, 1994..................................       2,100       49,641         (1,118)        2,035      52,658
  Net income................................................                                                 2,879       2,879
  Change in unrealized net capital gains and losses.........                                   4,475                     4,475
                                                              -----------  -----------       -------    -----------  ---------
Balance, December 31, 1995..................................   $   2,100    $  49,641     $    3,357     $   4,914   $  60,012
                                                              -----------  -----------       -------    -----------  ---------
                                                              -----------  -----------       -------    -----------  ---------
</TABLE>
 
                       See notes to financial statements.
 
                                      F-4
<PAGE>
                       GLENBROOK LIFE AND ANNUITY COMPANY
                            STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                                                           YEAR ENDED DECEMBER 31,
                                                                                      ---------------------------------
                                                                                         1995        1994       1993
                                                                                      ----------  ----------  ---------
                                                                                              ($ IN THOUSANDS)
<S>                                                                                   <C>         <C>         <C>
Cash flows from operating activities
  Net income........................................................................  $    2,879  $    1,294  $     529
  Adjustments to reconcile net income to net cash from operating activities
    Deferred income taxes...........................................................         (39)
    Realized capital gains..........................................................        (459)                   (83)
    Changes in other operating assets and liabilities...............................       1,217        (180)       656
                                                                                      ----------  ----------  ---------
      Net cash from operating activities............................................       3,598       1,114      1,102
                                                                                      ----------  ----------  ---------
Cash flows from investing activities
  Fixed income securities available for sale
    Proceeds from sales.............................................................       7,836                  3,015
    Investment collections..........................................................       1,568         649        969
    Investment purchases............................................................      (1,491)    (42,729)    (3,737)
  Participation in Separate Account.................................................     (10,069)
  Change in short-term investments, net.............................................      (1,178)        667     (1,102)
                                                                                      ----------  ----------  ---------
      Net cash from investing activities............................................      (3,334)    (41,413)      (855)
                                                                                      ----------  ----------  ---------
Cash flows from financing activities
  Capital contribution..............................................................                  40,000
                                                                                      ----------  ----------  ---------
      Net cash from financing activities............................................          --      40,000         --
                                                                                      ----------  ----------  ---------
Net increase (decrease) in cash.....................................................         264        (299)       247
Cash at beginning of year...........................................................          --         299         52
                                                                                      ----------  ----------  ---------
Cash at end of year.................................................................  $      264          --  $     299
                                                                                      ----------  ----------  ---------
                                                                                      ----------  ----------  ---------
</TABLE>
 
                       See notes to financial statements.
 
                                      F-5
<PAGE>
                       GLENBROOK LIFE AND ANNUITY COMPANY
                         NOTES TO FINANCIAL STATEMENTS
                                ($ IN THOUSANDS)
 
1.  ORGANIZATION AND NATURE OF OPERATIONS
    Glenbrook  Life  and  Annuity Company  (the  "Company") is  wholly  owned by
Allstate Life  Insurance Company  ("Allstate Life"),  which is  wholly owned  by
Allstate  Insurance  Company  ("Allstate"),  a  wholly-owned  subsidiary  of The
Allstate Corporation (the "Corporation"). On  June 30, 1995, Sears, Roebuck  and
Co. ("Sears") distributed its 80.3% ownership in the Corporation to Sears common
shareholders through a tax-free dividend (the "Distribution").
 
The  Company  develops and  markets flexible  premium deferred  variable annuity
contracts and  single and  flexible premium  deferred annuities  to  individuals
through banks and financial institutions in the United States.
 
Annuity  contracts issued by the Company are subject to discretionary withdrawal
or surrender by  the contractholder,  subject to  applicable surrender  charges.
These  contracts are reinsured with Allstate  Life (Note 4) which selects assets
to meet  the anticipated  cash  flow requirements  of the  assumed  liabilities.
Allstate  Life utilizes various modeling techniques in managing the relationship
between assets and  liabilities and employs  strategies to maintain  investments
which  are sufficiently liquid to meet obligations to contractholders in various
interest rate scenarios.
 
The Company  monitors  economic  and  regulatory  developments  which  have  the
potential  to impact its business. Currently there is proposed legislation which
would permit banks greater participation  in securities businesses, which  could
eventually  present an increased level of competition for sales of the Company's
annuity contracts. Furthermore, the federal  government may enact changes  which
could  possibly eliminate  the tax-advantaged  nature of  annuities or eliminate
consumers' need for tax deferral,  thereby reducing the incentive for  customers
to  purchase the  Company's products.  While it is  not possible  to predict the
outcome of such issues  with certainty, management  evaluates the likelihood  of
various  outcomes and  develops strategies, as  appropriate, to  respond to such
challenges.
 
Certain reclassifications have been made to the prior year financial  statements
to conform to the presentation for the current year.
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
LIFE INSURANCE ACCOUNTING
 
The  Company sells long-duration contracts that  do not involve significant risk
of policyholder mortality or morbidity (principally single and flexible  premium
annuities) which are considered investment contracts.
 
CONTRACTHOLDER FUNDS
 
Contractholder  funds  arise  from  the issuance  of  individual  contracts that
include  an   investment   component.   Payments  received   are   recorded   as
interest-bearing   liabilities.  Contractholder  funds  are  equal  to  deposits
received and  interest  accrued  to  the  benefit  of  the  contractholder  less
withdrawals,  mortality charges  and administrative  expenses. Credited interest
rates on contractholder funds ranged from 3.0% to 7.4% for those contracts  with
fixed interest rates and from 4.25% to 7.9% for those with flexible rates during
1995.
 
SEPARATE ACCOUNTS
 
During  1995,  the Company  issued  flexible premium  deferred  variable annuity
contracts, the  assets  and liabilities  of  which are  legally  segregated  and
reflected  in the  accompanying statements of  financial position  as assets and
liabilities of  the  Separate  Accounts  (Glenbrook  Life  and  Annuity  Company
Variable Annuity Account and Glenbrook Life and Annuity Company Separate Account
A)   unit  investment  trusts  registered   with  the  Securities  and  Exchange
Commission. Assets of the Separate Accounts are invested in funds of  management
investment  companies. For certain  variable annuity contracts,  the Company has
entered into an exclusive distribution arrangement with distributors.
 
                                      F-6
<PAGE>
7
 
                       GLENBROOK LIFE AND ANNUITY COMPANY
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                ($ IN THOUSANDS)
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
The assets of the Separate Accounts are carried at fair value. Unrealized  gains
and  losses  on the  Company's  participation in  the  Separate Account,  net of
deferred income taxes,  is shown  as a  component of  shareholder's equity.  The
Company's  participation  in  the  Separate  Account,  amounting  to  $10,530 at
December 31,  1995, is  subject  to certain  withdrawal restrictions  which  are
dependent  upon aggregate fund net asset  values. In addition, limitations exist
with regard to the maximum amount which  can be withdrawn by the Company  within
any 30-day period.
 
Investment  income and realized gains and losses of the Separate Accounts, other
than the portion related to the Company's participation, accrue directly to  the
contractholders  and, therefore, are not included in the accompanying statements
of operations. Revenues  to the Company  from the Separate  Accounts consist  of
contract  maintenance fees, administrative  fees and mortality  and expense risk
charges, which are entirely ceded to Allstate Life.
 
REINSURANCE
 
Beginning June 5, 1992, the Company reinsures all new business to Allstate  Life
(Note  4). Life insurance in force prior to that date is ceded to non-affiliated
reinsurers.
 
Contract charges  and credited  interest are  ceded and  reflected net  of  such
cessions   in  the   statements  of  operations.   Reinsurance  recoverable  and
contractholder funds  are reported  separately in  the statements  of  financial
position.
 
INVESTMENTS
 
Fixed  income  securities include  bonds  and mortgage-backed  securities. Fixed
income securities are carried  at fair value.  The difference between  amortized
cost  and fair value, net  of deferred income taxes,  is reflected as a separate
component of  shareholder's  equity.  Provisions  are made  to  write  down  the
carrying  value of fixed income securities for  declines in value that are other
than temporary.  Such writedowns  are  included in  realized capital  gains  and
losses.
 
Short-term investments are carried at cost which approximates fair value.
 
Investment  income consists  primarily of  interest, which  is recognized  on an
accrual basis. Interest  income on mortgage-backed  securities is determined  on
the effective yield method, based on the estimated principal repayments. Accrual
of  income is suspended for fixed income  securities that are in default or when
the receipt of interest payments is in doubt. Realized capital gains and  losses
are determined on a specific identification basis.
 
INCOME TAXES
 
The  income tax provision is calculated under the liability method. Deferred tax
assets and  liabilities  are  recorded  based  on  the  difference  between  the
financial  statement and tax bases of assets and liabilities and the enacted tax
rates. Deferred income taxes also arise from unrealized capital gains or  losses
on fixed income securities carried at fair value.
 
USE OF ESTIMATES
 
The  preparation of financial  statements in conformity  with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the amounts reported in the financial statements and accompanying  notes.
Actual results could differ from those estimates.
 
                                      F-7
<PAGE>
8
 
                       GLENBROOK LIFE AND ANNUITY COMPANY
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                ($ IN THOUSANDS)
 
3.  ACCOUNTING CHANGE
    Effective  December  31, 1993,  the Company  adopted Statement  of Financial
Accounting Standards ("SFAS")  No. 115, "Accounting  for Certain Investments  in
Debt  and Equity Securities." SFAS No.  115 requires that investments classified
as available  for  sale be  carried  at  fair value.  Previously,  fixed  income
securities  classified  as  available for  sale  were  carried at  the  lower of
amortized cost or fair  value, determined in  the aggregate. Unrealized  holding
gains  and losses are reflected as a separate component of shareholder's equity,
net of  deferred income  taxes. The  net effect  of adoption  of this  statement
increased  shareholder's equity at December 31, 1993  by $693, with no impact on
net income.
 
4.  RELATED PARTY TRANSACTIONS
 
REINSURANCE
 
Contract charges ceded to Allstate Life under reinsurance agreements were $1,523
and $409 in 1995 and 1994, respectively. Credited interest and expenses ceded to
Allstate Life amounted to  $71,905 and $26,177 in  1995 and 1994,  respectively.
Investment income earned on the assets which support contractholder funds is not
included  in the Company's financial statements as those assets were transferred
to Allstate  Life under  the terms  of reinsurance  treaties. Reinsurance  ceded
arrangements do not discharge the Company as the primary insurer.
 
BUSINESS OPERATIONS
 
The  Company  utilizes services  and business  facilities  owned or  leased, and
operated  by  Allstate  in  conducting  its  business  activities.  The  Company
reimburses Allstate for the operating expenses incurred by Allstate on behalf of
the Company. The cost to the Company is determined by various allocation methods
and  is primarily related to the level of services provided. Operating expenses,
including compensation and retirement and  other benefit programs, allocated  to
the  Company  were $348,  $271 and  $59  in 1995,  1994 and  1993, respectively.
Investment-related expenses are  retained by  the Company. All  other costs  are
assumed by Allstate Life under reinsurance treaties.
 
LAUGHLIN GROUP
 
Laughlin  Group, Inc. ("Laughlin"), a  wholly-owned subsidiary of Laughlin Group
Holdings Inc., a wholly-owned subsidiary of Allstate Life, which was acquired in
September 1995,  is a  third-party marketer  which distributes  the products  of
insurance  carriers  including  the  Company.  Laughlin  markets  the  Company's
flexible premium  deferred  variable  annuity  contracts  and  flexible  premium
deferred  annuities.  Sales  commissions  paid  to  Laughlin  subsequent  to the
acquisition date of $3,439 were ceded to Allstate Life.
 
5.  INCOME TAXES
    Allstate Life and  its life insurance  subsidiaries, including the  Company,
will file a consolidated federal income tax return. Tax liabilities and benefits
realized  by the consolidated group are allocated as generated by the respective
subsidiaries, whether or not such  benefits generated by the subsidiaries  would
be  available  on a  separate  return basis.  The  Corporation and  its domestic
subsidiaries including the Company (the  "Allstate Group"), will be eligible  to
file a consolidated tax return beginning in the year 2000.
 
Prior to the Distribution, the Allstate Group joined with Sears and its domestic
business  units  (the "Sears  Group") in  the filing  of a  consolidated federal
income tax return (the "Sears Tax Group")  and were parties to a federal  income
tax allocation agreement (the "Tax Sharing Agreement"). As a member of the Sears
Tax Group, the Corporation was jointly and severally liable for the consolidated
income  tax liability of the  Sears Tax Group. Under  the Tax Sharing Agreement,
the Company, through the Corporation, paid  to or received from the Sears  Group
the  amount, if any, by which the Sears Tax Group's federal income tax liability
was affected by virtue  of inclusion of the  Allstate Group in the  consolidated
federal  income tax return.  Effectively, this resulted  in the Company's annual
income tax provision being computed as  if the Company filed a separate  return,
except that items such as net
 
                                      F-8
<PAGE>
9
 
                       GLENBROOK LIFE AND ANNUITY COMPANY
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                ($ IN THOUSANDS)
 
5.  INCOME TAXES (CONTINUED)
operating losses, capital losses or similar items which might not be immediately
recognizable  in a separate return, were  allocated according to the Tax Sharing
Agreement and reflected in the Company's provision to the extent that such items
reduced the Sears Tax Group's federal tax liability.
 
The Allstate Group and Sears Group have entered into an agreement which  governs
their respective rights and obligations with respect to federal income taxes for
all  periods prior to the Distribution ("Consolidated Tax Years"). The agreement
provides that all Consolidated Tax Years will continue to be governed by the Tax
Sharing Agreement with respect to the Company's federal income tax liability and
taxes payable to or recoverable from the Sears Group.
 
The components of the deferred income tax assets and liabilities at December 31,
1995 and 1994 are as follows:
 
<TABLE>
<CAPTION>
                                                                                                          1995       1994
                                                                                                        ---------  ---------
<S>                                                                                                     <C>        <C>
Unrealized net capital losses on fixed income securities..............................................         --  $     602
Other.................................................................................................                     4
                                                                                                        ---------  ---------
  Total deferred assets...............................................................................         --        606
                                                                                                        ---------  ---------
                                                                                                        ---------  ---------
Unrealized net capital gains on fixed income securities...............................................  $  (1,807)
Difference in tax bases of investments................................................................        (21)
Other.................................................................................................                   (64)
                                                                                                        ---------  ---------
  Total deferred liabilities..........................................................................     (1,828)       (64)
                                                                                                        ---------  ---------
  Net deferred (liability) asset......................................................................  $  (1,828) $     542
                                                                                                        ---------  ---------
                                                                                                        ---------  ---------
</TABLE>
 
The components of income tax expense are as follows:
 
<TABLE>
<CAPTION>
                                                                                                YEAR ENDED DECEMBER 31,
                                                                                            -------------------------------
                                                                                              1995       1994       1993
                                                                                            ---------  ---------  ---------
<S>                                                                                         <C>        <C>        <C>
Current...................................................................................  $   1,615  $     652  $     290
Deferred..................................................................................        (39)        71         17
                                                                                            ---------  ---------  ---------
  Income tax expense......................................................................  $   1,576  $     723  $     307
                                                                                            ---------  ---------  ---------
                                                                                            ---------  ---------  ---------
</TABLE>
 
The Company paid  income taxes of  $874, $57 and  $290 in 1995,  1994 and  1993,
respectively,  under  the  Tax Sharing  Agreement.  The Company  had  income tax
payable to Allstate  Life of  $1,637 and  $605 at  December 31,  1995 and  1994,
respectively.
 
                                      F-9
<PAGE>
10
 
                       GLENBROOK LIFE AND ANNUITY COMPANY
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                ($ IN THOUSANDS)
 
6.  INVESTMENTS
 
FAIR VALUES
 
The  amortized cost, fair value and gross  unrealized gains and losses for fixed
income securities are as follows:
 
<TABLE>
<CAPTION>
                                                                                              GROSS UNREALIZED
                                                                                AMORTIZED   --------------------
                                                                                  COST        GAINS     LOSSES    FAIR VALUE
                                                                               -----------  ---------  ---------  -----------
<S>                                                                            <C>          <C>        <C>        <C>
AT DECEMBER 31, 1995
U.S. government and agencies.................................................   $  24,722   $   3,470         --   $  28,192
Corporate....................................................................       1,304         120                  1,424
Mortgage-backed securities...................................................      18,086       1,113                 19,199
                                                                               -----------  ---------  ---------  -----------
  Totals.....................................................................   $  44,112   $   4,703         --   $  48,815
                                                                               -----------  ---------  ---------  -----------
                                                                               -----------  ---------  ---------  -----------
AT DECEMBER 31, 1994
U.S. government and agencies.................................................   $  31,005   $      30  $   1,126   $  29,909
Mortgage-backed securities...................................................      20,522                    624      19,898
                                                                               -----------  ---------  ---------  -----------
  Total......................................................................   $  51,527   $      30  $   1,750   $  49,807
                                                                               -----------  ---------  ---------  -----------
                                                                               -----------  ---------  ---------  -----------
</TABLE>
 
SCHEDULED MATURITIES
 
The scheduled  maturities  of fixed  income  securities available  for  sale  at
December 31, 1995 are as follows:
 
<TABLE>
<CAPTION>
                                                                                                    AMORTIZED     FAIR
                                                                                                      COST        VALUE
                                                                                                   -----------  ---------
<S>                                                                                                <C>          <C>
Due in one year or less..........................................................................   $     398   $     403
Due after one year through five years............................................................
Due after five years through ten years...........................................................      15,883      17,681
Due after ten years..............................................................................       9,745      11,532
                                                                                                   -----------  ---------
                                                                                                       26,026      29,616
Mortgage-backed securities.......................................................................      18,086      19,199
                                                                                                   -----------  ---------
  Total..........................................................................................   $  44,112   $  48,815
                                                                                                   -----------  ---------
                                                                                                   -----------  ---------
</TABLE>
 
Actual  maturities may differ from those scheduled as a result of prepayments by
the issuers.
 
UNREALIZED NET CAPITAL GAINS AND LOSSES
 
Unrealized net  capital gains  and losses  on fixed  income securities  and  the
Company's participation in the Separate Account included in shareholder's equity
at December 31, 1995 are as follows:
 
<TABLE>
<CAPTION>
                                                                                                               UNREALIZED
                                                                                        AMORTIZED     FAIR     NET GAINS/
                                                                                          COST        VALUE     (LOSSES)
                                                                                       -----------  ---------  -----------
<S>                                                                                    <C>          <C>        <C>
Fixed income securities..............................................................   $  44,112   $  48,815   $   4,703
Participation in Separate Account....................................................      10,069      10,530         461
Deferred income taxes................................................................                              (1,807)
                                                                                                               -----------
  Total..............................................................................                           $   3,357
                                                                                                               -----------
                                                                                                               -----------
</TABLE>
 
                                      F-10
<PAGE>
11
 
                       GLENBROOK LIFE AND ANNUITY COMPANY
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                ($ IN THOUSANDS)
 
6.  INVESTMENTS (CONTINUED)
The  change  in  unrealized  net  capital  gains  and  losses  for  fixed income
securities and  the  Company's  participation  in the  Separate  Account  is  as
follows:
 
<TABLE>
<CAPTION>
                                                                                               YEAR ENDED DECEMBER 31,
                                                                                           -------------------------------
                                                                                             1995       1994       1993
                                                                                           ---------  ---------  ---------
<S>                                                                                        <C>        <C>        <C>
Fixed income securities..................................................................  $   6,423  $  (2,786) $   1,076
Participation in Separate Account in 1995................................................        461
Deferred income taxes....................................................................     (2,409)       975       (373)
                                                                                           ---------  ---------  ---------
Change in unrealized net capital gains and losses........................................  $   4,475  $  (1,811) $     703
                                                                                           ---------  ---------  ---------
                                                                                           ---------  ---------  ---------
</TABLE>
 
COMPONENTS OF NET INVESTMENT INCOME
 
Investment income by investment type is as follows:
 
<TABLE>
<CAPTION>
                                                                                                   YEAR ENDED DECEMBER 31,
                                                                                               -------------------------------
                                                                                                 1995       1994       1993
                                                                                               ---------  ---------  ---------
<S>                                                                                            <C>        <C>        <C>
Investment income:
  Fixed income securities....................................................................  $   3,850  $   1,984  $     729
  Short-term.................................................................................        113         48         35
  Participation in Separate Account..........................................................         69
                                                                                               ---------  ---------  ---------
Investment income, before expense............................................................      4,032      2,032        764
Investment expense...........................................................................         36         15         11
                                                                                               ---------  ---------  ---------
Net investment income........................................................................  $   3,996  $   2,017  $     753
                                                                                               ---------  ---------  ---------
                                                                                               ---------  ---------  ---------
</TABLE>
 
REALIZED CAPITAL GAINS AND LOSSES
 
Realized capital gains on investments are as follows:
 
<TABLE>
<CAPTION>
                                                                                                         YEAR ENDED
                                                                                                        DECEMBER 31,
                                                                                                      ----------------
                                                                                                      1995  1994  1993
                                                                                                      ----  ----  ----
<S>                                                                                                   <C>   <C>   <C>
Fixed income securities.............................................................................  $459  $ --  $83
Income tax..........................................................................................   161         29
                                                                                                      ----  ----  ----
Net realized gains..................................................................................  $298  $ --  $54
                                                                                                      ----  ----  ----
                                                                                                      ----  ----  ----
</TABLE>
 
PROCEEDS FROM SALES OF FIXED INCOME SECURITIES
 
The  proceeds from  sales of investments  in fixed  income securities, excluding
calls, were $7,836 and $3,015, with related gross realized gains of $459 and $22
for 1995 and 1993, respectively. There were no such amounts realized in 1994.
 
SECURITIES ON DEPOSIT
 
At December 31, 1995, fixed income  securities with a carrying value of  $10,085
were on deposit with regulatory authorities as required by law.
 
                                      F-11
<PAGE>
12
 
                       GLENBROOK LIFE AND ANNUITY COMPANY
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                ($ IN THOUSANDS)
 
7.  FINANCIAL INSTRUMENTS
    In  the normal course of business,  the Company invests in various financial
assets and incurs various financial liabilities. The fair value of all financial
assets other  than  fixed  income  securities and  all  liabilities  other  than
contractholder funds approximates their carrying value as they are short-term in
nature.
 
Fair  values for fixed income securities are  based on quoted market prices. The
December 31,  1995 and  1994 fair  values and  carrying values  of fixed  income
securities are discussed in Note 6.
 
The  fair value of contractholder funds on  investment contracts is based on the
terms of  the underlying  contracts. Reserves  on investment  contracts with  no
stated  maturities (single premium and  flexible premium deferred annuities) are
valued at the fund  balance less surrender charge.  The fair value of  immediate
annuities with fixed terms are estimated using discounted cash flow calculations
based  on interest rates currently offered  for contracts with similar terms and
duration. Contractholder funds on investment  contracts had a carrying value  of
$1,340,925  at December 31,  1995 and a  fair value of  $1,282,248. The carrying
value  and  fair  value  at  December  31,  1994  were  $696,854  and  $670,930,
respectively.
 
8.  STATUTORY FINANCIAL INFORMATION
    The  following  tables  reconcile  net income  and  shareholder's  equity as
reported herein in conformity with generally accepted accounting principles with
statutory net  income and  capital and  surplus, determined  in accordance  with
statutory  accounting practices prescribed or  permitted by insurance regulatory
authorities:
 
<TABLE>
<CAPTION>
                                                                                                    NET INCOME
                                                                                                    YEAR ENDED
                                                                                                   DECEMBER 31,
                                                                                          -------------------------------
                                                                                            1995       1994       1993
                                                                                          ---------  ---------  ---------
<S>                                                                                       <C>        <C>        <C>
Balance per generally accepted accounting principles....................................  $   2,879  $   1,294  $     529
  Income taxes..........................................................................       (164)        29          8
  Interest maintenance reserve..........................................................                   (53)        27
  Non-admitted assets and statutory reserves............................................        (46)        15        (47)
                                                                                          ---------  ---------  ---------
Balance per statutory accounting practices..............................................  $   2,669  $   1,285  $     517
                                                                                          ---------  ---------  ---------
                                                                                          ---------  ---------  ---------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                           SHAREHOLDER'S
                                                                                               EQUITY
                                                                                            DECEMBER 31,
                                                                                          ----------------
                                                                                           1995     1994
                                                                                          -------  -------
<S>                                                                                       <C>      <C>
Balance per generally accepted accounting principles....................................  $60,012  $52,658
  Income taxes..........................................................................      698     (575)
  Unrealized net capital gains (losses).................................................   (4,703)   1,719
  Non-admitted assets and statutory reserves............................................   (1,702)  (1,635)
                                                                                          -------  -------
Balance per statutory accounting practices..............................................  $54,305  $52,167
                                                                                          -------  -------
                                                                                          -------  -------
</TABLE>
 
PERMITTED STATUTORY ACCOUNTING PRACTICES
 
The Company prepares  their statutory  financial statements  in accordance  with
accounting  principles and  practices prescribed  or permitted  by the insurance
department of the State of  Illinois. Prescribed statutory accounting  practices
include  a  variety of  publications of  the  National Association  of Insurance
Commissioners, as well  as state laws,  regulations, and general  administrative
rules.   Permitted  statutory  accounting  practices  encompass  all  accounting
practices not so prescribed. The Company does not follow any permitted statutory
accounting practices  that  have  a  material effect  on  statutory  surplus  or
risk-based capital.
 
                                      F-12
<PAGE>
13
 
                       GLENBROOK LIFE AND ANNUITY COMPANY
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                ($ IN THOUSANDS)
 
8.  STATUTORY FINANCIAL INFORMATION (CONTINUED)
DIVIDENDS
 
The ability of the Company to pay dividends is dependent on business conditions,
income, cash requirements of the Company and other relevant factors. The payment
of  shareholder dividends by  insurance companies without  the prior approval of
the state insurance regulator is limited to formula amounts based on net  income
and  capital  and surplus,  determined in  accordance with  statutory accounting
practices, as well as the timing and  amount of dividends paid in the  preceding
twelve  months. The maximum amount of  dividends that the Company can distribute
during  1996  without  prior  approval  of  both  the  Illinois  and  California
Departments of Insurance is $5,220.
 
                                      F-13
<PAGE>
                       GLENBROOK LIFE AND ANNUITY COMPANY
                            SCHEDULE IV--REINSURANCE
                                ($ IN THOUSANDS)
<TABLE>
<CAPTION>
                                                                                               GROSS                  NET
                                                                                              AMOUNT      CEDED     AMOUNT
                                                                                             ---------  ---------  ---------
<S>                                                                                          <C>        <C>        <C>
YEAR ENDED DECEMBER 31, 1995
Life insurance in force....................................................................  $   1,250  $   1,250  $      --
                                                                                             ---------  ---------  ---------
                                                                                             ---------  ---------  ---------
Premiums and contract charges:
  Life and annuities.......................................................................  $   6,571  $   6,571  $      --
                                                                                             ---------  ---------  ---------
                                                                                             ---------  ---------  ---------
 
<CAPTION>
 
                                                                                               GROSS                  NET
                                                                                              AMOUNT      CEDED     AMOUNT
                                                                                             ---------  ---------  ---------
<S>                                                                                          <C>        <C>        <C>
YEAR ENDED DECEMBER 31, 1994
Life insurance in force....................................................................  $   1,250  $   1,250  $      --
                                                                                             ---------  ---------  ---------
                                                                                             ---------  ---------  ---------
Premiums and contract charges:
  Life and annuities.......................................................................  $     409  $     409  $      --
                                                                                             ---------  ---------  ---------
                                                                                             ---------  ---------  ---------
<CAPTION>
 
                                                                                               GROSS                  NET
                                                                                              AMOUNT      CEDED     AMOUNT
                                                                                             ---------  ---------  ---------
<S>                                                                                          <C>        <C>        <C>
YEAR ENDED DECEMBER 31, 1993
Life insurance in force....................................................................  $   1,250  $   1,250  $      --
                                                                                             ---------  ---------  ---------
                                                                                             ---------  ---------  ---------
Premiums and contract charges:
  Life.....................................................................................          6          6         --
  Contract charges.........................................................................         70         70         --
                                                                                             ---------  ---------  ---------
                                                                                             $      76  $      76  $      --
                                                                                             ---------  ---------  ---------
                                                                                             ---------  ---------  ---------
</TABLE>
 
                                      F-14
<PAGE>
A-1
 
                                   APPENDIX A
                            MARKET VALUE ADJUSTMENT
 
The Market Value Adjustment is based on the following:
 
 I = the Interest Crediting Rate for that Sub-account
 
N = the number of whole and partial years from the date we receive the transfer,
    withdrawal, or death benefit request, or from the Payout Start Date to the
    end of the Sub-account's Guarantee Period; and
 
 J = the current interest crediting rate offered for a Guarantee Period or
     length N on the date we determine the Market Value Adjustment.
 
     J will be determined by a linear interpolation between the current interest
     rates for the next higher and lower integral years. For purposes of
     interpolation, current interest rates for Guarantee Periods not available
     under this Contract will be calculated in a manner consistent with those
     which are available.
 
The Market Value Adjustment factor is determined from the following formula:
 
 .9 * (I--J)* N
 
Any transfer, withdrawal, or death benefit paid from a Sub-account of the
Guaranteed Maturity Amount Fixed Account will be multiplied by the Market Value
Adjustment factor to determine the Market Value Adjustment.
 
                                  ILLUSTRATION
 
                       EXAMPLE OF MARKET VALUE ADJUSTMENT
 
<TABLE>
<S>                <C>
Purchase Payment:  $10,000
Guarantee Period:  5 years
Interest Rate:     5.55%
Full Surrender:    End of Contract Year 3
</TABLE>
 
    NOTE: This illustration assumes that premium taxes were not applicable.
 
                 Example 1: (Assumes declining interest rates)
 
           Step 1: Calculate Account Value at End of Contract Year 3:
 
                      = 10,000.00 * (1.0555)3 = $11,759.12
 
                  Step 2: Calculate the Free Withdrawal Amount
 
                         = .10 * 11,759.12 = $1,175.91
                    Step 3: Calculate the Withdrawal Charge:
 
                    = .05 * (10,000.00 - 1,175.91) = $441.20
<PAGE>
A-2
 
                 Step 4: Calculate the Market Value Adjustment:
 
                                    I= 5.55%
                                    J= 5.05%
                                    N =730 days = 2
          365 days
 
                Market Value Adjustment Factor: .9 * (I--J) * N
 
                    = .9 * (.0555 - .0505) * 730/365 = .009
 
 Market Value Adjustment = Factor * Amount Subject to Market Value Adjustment:
 
                          = .009 * 11,759.12 = $105.83
 
     Step 4: Calculate The Amount Received by Customers as a Result of Full
                   Withdrawal at the end of Contract Year 3:
 
                   = 11,759.12 - 441.20 + 105.83 = $11,423.75
 
                   Example 2: (Assumes rising interest rates)
 
           Step 1: Calculate Account Value at End of Contract Year 3:
 
                      = 10,000.00 * (1.0555)3 = $11,759.12
 
                 Step 2: Calculate the Free Withdrawal Amount:
 
                        = .10 * (11,759.12) = $1,175.91
                    Step 3: Calculate the Withdrawal Charge:
 
                    = .05 * (10,000.00 - 1,175.91) = $441.20
 
                 Step 4: Calculate the Market Value Adjustment:
 
                                    I= 5.55%
                                    J= 6.05%
                                    N =730 days = 2
          365 days
 
                Market Value Adjustment Factor: .9 * (I--J) * N
 
                   = .9 * (.0555 - .0605) * (730/365) = -.009
 
  Market Value Adjustment = Factor * Amount Subject to Market Value Adjustment
 
                        = -.009 * $11,759.12 = - $105.83
 
     Step 4: Calculate The Amount Received by Customers as a Result of Full
                   Withdrawal at the end of Contract Year 3:
 
                   = 11,759.12 - 441.20 - 105.83 = $11,212.09
<PAGE>
B-1
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                     PAGE
                                                     -----
<S>                                               <C>
Additions, Deletions or Substitutions of
  Investments...................................           3
Reinvestment....................................           3
The Contract....................................           3
  Purchase of Contracts.........................           3
  Performance Data..............................           3
  Tax-free Exchanges (1035 Exchanges, Rollovers
   and Transfers)...............................           5
  Premium Taxes.................................           5
  Tax Reserves..................................           5
  Income Payments...............................           5
  Calculation of Annuity Unit Values............           5
General Matters.................................           6
  Incontestability..............................           6
  Settlements...................................           6
 
<CAPTION>
                                                     PAGE
                                                     -----
<S>                                               <C>
  Safekeeping of the Variable Account's
   Assets.......................................           6
Federal Tax Matters.............................           6
  Introduction..................................           6
  Taxation of Glenbrook Life and Annuity
   Company......................................           7
  Exceptions to the Non-Natural Owner Rule......           7
  Penalty Tax on Premature Distributions........           7
  IRS Required Distribution at Death Rules......           7
  Qualified Plans...............................           8
  Types of Qualified Plans......................           8
Sales Commissions...............................           9
Variable Account Financial Statements...........         F-1
</TABLE>
 
<PAGE>
B-2
 
ORDER FORM
 
Please send me a copy of the most recent Statement of Additional Information for
the Glenbrook Life and Annuity Company Variable Annuity Account.
 
<TABLE>
<S>                   <C>                                      <C>
- -------------------   --------------------------------------
       (Date)                         (Name)
                      --------------------------------------
                                 (Street Address)
                      --------------------------------------
                      (City)              (State)  (Zip Code)
</TABLE>
 
Send to:  Glenbrook Life and Annuity Company
       Post Office Box 94042
       Palatine, Illinois 60094
       Attention: VA Customer Service Unit
<PAGE>
                      STATEMENT OF ADDITIONAL INFORMATION
 
                       GLENBROOK LIFE AND ANNUITY COMPANY
                            VARIABLE ANNUITY ACCOUNT
 
                                   OFFERED BY
 
                       GLENBROOK LIFE AND ANNUITY COMPANY
                               3100 SANDERS ROAD
                              NORTHBROOK, IL 60062
                                 1-800/755-5275
 
                      INDIVIDUAL FLEXIBLE PREMIUM DEFERRED
                           VARIABLE ANNUITY CONTRACTS
 
This  Statement  of Additional  Information supplements  the information  in the
prospectus  for  the  Individual  Flexible  Premium  Deferred  Variable  Annuity
Contract  offered by  Glenbrook Life and  Annuity Company  ("Company"), a wholly
owned subsidiary of Allstate Life  Insurance Company. The Contract is  primarily
designed  to aid individuals in long-term financial  planning and it can be used
for retirement planning  regardless of  whether the plan  qualifies for  special
federal income tax treatment. The prospectus may be obtained from Glenbrook Life
and Annuity Company by writing or calling the address or telephone number listed
above.
 
THIS  STATEMENT OF ADDITIONAL INFORMATION IS NOT A PROSPECTUS AND SHOULD BE READ
ONLY IN CONJUNCTION WITH THE PROSPECTUS FOR THE CONTRACT
 
           THE PROSPECTUS, DATED MAY 1, 1996, HAS BEEN FILED WITH THE
                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
 
                               DATED MAY 1, 1996.
<PAGE>
2
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                   PAGE
                                                   -----
<S>                                             <C>
Additions, Deletions or Substitutions of
  Investments.................................           3
Reinvestment..................................           3
The Contract..................................           3
  Purchase of Contracts.......................           3
  Performance Data............................           3
  Tax-free Exchanges (1035 Exchanges,
   Rollovers and Transfers)...................           5
  Premium Taxes...............................           5
  Tax Reserves................................           6
Income Payments...............................           6
  Calculation of Annuity Unit Values..........           6
General Matters...............................           6
  Incontestability............................           6
  Settlements.................................           6
 
<CAPTION>
                                                   PAGE
                                                   -----
<S>                                             <C>
  Safekeeping of the Variable Account's
   Assets.....................................           6
Federal Tax Matters...........................           7
  Introduction................................           7
  Taxation of Glenbrook Life and Annuity
   Company....................................           7
  Exceptions to the Non-Natural Owner Rule....           7
  Penalty Tax on Premature Distributions......           8
  IRS Required Distribution at Death Rules....           8
  Qualified Plans.............................           8
  Types of Qualified Plans....................           8
Sales Commissions.............................           9
Variable Account Financial Statements.........         F-1
</TABLE>
<PAGE>
3
 
ADDITIONS, DELETIONS OR SUBSTITUTIONS OF INVESTMENTS
 
The  Company retains the right, subject to any applicable law, to make additions
to, deletions  from  or substitutions  for  the  Portfolio shares  held  by  any
Sub-account of the Variable Account. The Company reserves the right to eliminate
the  shares  of  any of  the  Portfolios  and to  substitute  shares  of another
Portfolio of the Funds, or  of another open-end, registered investment  company,
if the shares of the Portfolio are no longer available for investment, or if, in
the  Company's judgment, investment in  any Portfolio would become inappropriate
in view  of  the purposes  of  the  Variable Account.  Substitutions  of  shares
attributable  to an Owner's interest in a Sub-account will not be made until the
Owner has been  notified of the  change, and until  the Securities and  Exchange
Commission has approved the change, to the extent such notification and approval
is  required by the  Investment Company Act  of 1940. Nothing  contained in this
Statement of  Additional Information  shall prevent  the Variable  Account  from
purchasing  other securities for  other series or classes  of contracts, or from
effecting a conversion between  series or classes of  contracts on the basis  of
requests made by Owners.
 
The Company may also establish additional Sub-accounts or series of Sub-accounts
of  the Variable Account. Each additional Sub-account would purchase shares in a
new Portfolio of the  Fund or in  another mutual fund.  New Sub-accounts may  be
established  when, in  the sole  discretion of  the Company,  marketing needs or
investment conditions warrant. Any new Sub-accounts offered in conjunction  with
the  Contract  will  be made  available  to existing  Owners  on a  basis  to be
determined  by  the  Company.  The  Company  may  also  eliminate  one  or  more
Sub-accounts if, in its sole discretion, marketing, tax or investment conditions
so warrant.
 
In the event of any such substitution or change, the Company may, by appropriate
endorsement,  make  such  changes  in  the  Contract  as  may  be  necessary  or
appropriate to reflect such substitution or change. If deemed to be in the  best
interests  of  persons having  voting rights  under  the policies,  the Variable
Account may be operated as a management company under the Investment Company Act
of 1940 or it may be deregistered under such Act in the event such  registration
is no longer required.
 
REINVESTMENT
 
All   dividends  and  capital  gains   distributions  from  the  Portfolios  are
automatically reinvested in shares  of the distributing  Portfolio at their  net
asset value.
 
THE CONTRACT
 
PURCHASE OF CONTRACTS
 
The  Contracts  are offered  to  the public  through  banks as  well  as brokers
licensed under  the  federal  securities  laws and  state  insurance  laws.  The
Contracts  are distributed  through the  principal underwriter  for the Variable
Account, Allstate Life Financial Services, Inc., an affiliate of Glenbrook  Life
and Annuity Company. The offering of the Contracts is continuous and the Company
does  not anticipate discontinuing  the offering of  the Contracts. However, the
Company reserves the right to discontinue the offering of the Contracts.
 
PERFORMANCE DATA
 
From time to  time the  Variable Account may  publish advertisements  containing
performance  data relating  to its  Sub-accounts. The  performance data  for the
Sub-accounts (other than for the Federated Prime Money Fund II Sub-account) will
always be accompanied by  total return quotations.  Performance figures used  by
the  Variable  Account  are  based  on  actual  historical  performance  of  its
Sub-accounts for specified periods, and the figures
<PAGE>
4
are not intended to indicate future  performance. The Variable Account may  also
disclose yield, standard total return, and non-standard total return for periods
prior  to the date  that the Variable Account  commenced operations. For periods
prior to  the  date  the  Variable  Account  commenced  operations,  performance
information  for the Sub-accounts will be calculated based on the performance of
the underlying Funds and the assumption that the Sub-accounts were in  existence
for  the same periods as those of the  underlying Funds, with a level of charges
equal to those currently assessed against the Sub-accounts.
 
A Sub-account's "average annual total return" represents an annualization of the
Sub-account's total return over a particular  period and is computed by  finding
the  annual percentage rate  which, when compounded  annually, will accumulate a
hypothetical $1,000 Purchase Payment to the  redeemable value at the end of  the
one,  five or ten year period, or for  a period from the date of commencement of
the Sub-account's operations, if shorter than any of the foregoing. The  average
annual  total return is obtained by  dividing the ending redeemable value, after
deductions for any Withdrawal Charges or Contract Maintenance Charges imposed on
the Contracts  by  the Variable  Account,  by the  initial  hypothetical  $1,000
Purchase Payment, taking the "n"th root of the quotient (where "n" is the number
of years in the period) and subtracting 1 from the result.
 
The  Withdrawal Charges  assessed upon  redemption are  computed as  follows: no
Withdrawal Charge is assessed on 10% of the Contract Value, as determined on the
date of the first  withdrawal during the Contract  Year. Withdrawal Charges  are
charged  on the amount of  redemption equal to the  Purchase Payment, reduced by
the amount entitled to the  10% exception, if any.  The remaining amount of  the
redemption,  if any, is not assessed  a Withdrawal Charge. The Withdrawal Charge
Schedule specifies  rates  based on  the  number  of complete  years  since  the
Purchase  Payment being withdrawn  was made. One rate  is specified for Purchase
Payments made in the current Contract  Year, another rate for Purchase  Payments
made  in the prior Contract Year, another rate for Purchase Payments made in the
second prior Contract Year, and so on until a rate for Purchase Payments made in
the seventh prior Contract Year or prior to it is reached. For a one year  total
return  calculation the second rate, (i.e.,  the rate for Purchase Payments made
in the prior complete year since Purchase Payment being withdrawn was made),  is
assessed.  The Contract Maintenance Charge ($30  per contract) used in the total
return calculation is normally  prorated using the  following method: The  total
amount of annual Contract fees collected during the year is divided by the total
average  net assets  of all the  Sub-accounts. The resulting  percentage is then
multiplied by the ending Contract Value.
 
The standard  total  returns  for  the  Sub-accounts  for  the  period  of  each
Sub-account's  operations during 1995 are presented below. Note that these total
returns have not been annualized.
 
<TABLE>
<CAPTION>
                                                                                STANDARDIZED TOTAL RETURN
                                                                                   FOR THE PERIOD FROM
                                                                               INCEPTION OF THE SUB-ACCOUNT
SUB-ACCOUNT                                                                       (10/6/95) TO 12/31/95
- -----------------------------------------------------------------------------  ----------------------------
<S>                                                                            <C>
Investment Grade Bond........................................................                -2.94%
Capital Growth...............................................................                 0.33%
Value Income.................................................................                 0.68%
Mid-Cap Equity...............................................................                -3.45%
Federated Prime Money Fund II................................................              N/A
</TABLE>
 
<PAGE>
5
 
OTHER TOTAL RETURNS
 
From time to  time, sales literature  or advertisements may  also quote  average
annual  total  returns  that do  not  reflect  the Surrender  Charge.  These are
calculated in exactly the same way as the average annual total returns described
above, except that the ending redeemable  value of the hypothetical account  for
the  period is replaced with  an ending value for the  period that does not take
into account any charges on amounts surrendered.
 
The non-standard total returns for  the Sub-acounts (not including deduction  of
the  Surrender Charge), for  the period of  each Sub-account's operations during
1995  are  presented  below.  Note  that  these  total  returns  have  not  been
annualized.
 
<TABLE>
<CAPTION>
                                                                               NON-STANDARDIZED TOTAL RETURN
                                                                                    FOR THE PERIOD FROM
                                                                               INCEPTION OF THE SUB-ACCOUNT
SUB-ACCOUNT                                                                        (10/6/95) TO 12/31/95
- -----------------------------------------------------------------------------  -----------------------------
<S>                                                                            <C>
Investment Grade Bond........................................................                3.36%
Capital Growth...............................................................                6.61%
Value Income.................................................................                6.96%
Mid-Cap Equity...............................................................                2.85%
Federated Prime Money Fund II................................................               N/A
</TABLE>
 
The  Variable Account  may also  advertise the  performance of  the Sub-accounts
relative to certain  performance rankings  and indexes  compiled by  independent
organizations, such as: (a) Lipper Analytical Services, Inc.; (b) the Standard &
Poor's 500 Composite Stock Price Index ("S & P 500"); (c) A.M. Best Company; (d)
Bank Rate Monitor; and (e) Morningstar.
 
TAX-FREE EXCHANGES (1035 EXCHANGES, ROLLOVERS AND TRANSFERS)
 
The  Company accepts Purchase Payments which are the proceeds of a Contract in a
transaction qualifying  for  a  tax-free  exchange under  Section  1035  of  the
Internal  Revenue Code.  Except as  required by  federal law  in calculating the
basis of the Contract, the Company  does not differentiate between Section  1035
Purchase Payments and non-Section 1035 Purchase Payments.
 
The  Company also accepts "rollovers" and transfers from Contracts qualifying as
tax-sheltered annuities ("TSAs"),  individual retirement  annuities or  accounts
("IRAs"),  or any other Qualified Contract  which is eligible to "rollover" into
an IRA. The Company differentiates among Non-Qualified Contracts, TSAs, IRAs and
other Qualified Contracts  to the extent  necessary to comply  with federal  tax
laws.  For example, the Company restricts  the assignment, transfer or pledge of
TSAs and  IRAs  so  the Contracts  will  continue  to qualify  for  special  tax
treatment.  An Owner contemplating any such  exchange, rollover or transfer of a
Contract should contact a  competent tax adviser with  respect to the  potential
effects of such a transaction.
 
PREMIUM TAXES
 
Applicable  premium tax rates depend  on the Owner's state  of residency and the
insurance laws and status of the Company in those states where premium taxes are
incurred. Premium  tax  rates  may be  changed  by  legislation,  administrative
interpretations or judicial acts.
<PAGE>
6
 
TAX RESERVES
 
The  Company does not  establish capital gains tax  reserves for the Sub-account
nor deduct charges for  tax reserves because the  Company believes that  capital
gains  attributable to  the Variable Account  will not be  taxable. However, the
Company reserves  the right  to deduct  charges to  establish tax  reserves  for
potential taxes on realized or unrealized capital gains.
 
INCOME PAYMENTS
 
CALCULATION OF VARIABLE ANNUITY UNIT VALUES
 
The  amount of the first  Income Payment is calculated  by applying the Contract
Value allocated to  each Variable  Sub-account less any  applicable premium  tax
charge  deducted at this time, to the income payment tables in the Contract. The
first Variable  Annuity Income  Payment  is divided  by the  Sub-account's  then
current  Annuity Unit value to determine the  number of Annuity Units upon which
later Income Payments will be based. Variable Annuity Income Payments after  the
first will be equal to the sum of the number of Annuity Units determined in this
manner  for each Sub-account times the then  current Annuity Unit value for each
respective Sub-account.
 
Annuity Units in  each variable  Sub-account are valued  separately and  Annuity
Unit  values  will  depend  upon the  investment  experience  of  the particular
Portfolios in which the Sub-account invests.  The value of the Annuity Unit  for
each  variable Sub-account at the end of  any Valuation Period is calculated by:
(a) multiplying the Annuity Unit Value  at the end of the immediately  preceding
Valuation  Period by the Sub-accounts's Net Investment Factor during the period;
and then (b) dividing the product by the sum of 1.0 plus the assumed  investment
rate  for the period. The assumed investment  rate adjusts for the interest rate
assumed in the Income Payment tables used to determine the dollar amount of  the
first  Variable Annuity Income Payment, and is at an effective annual rate which
is disclosed in the Contract.
 
The amount of the first Income Payment  paid under an income plan is  determined
using  the interest rate and  mortality table disclosed in  the Contract. Due to
judicial or legislative developments  regarding the use of  tables which do  not
differentiate on the basis of sex, different annuity tables may be used.
 
GENERAL MATTERS
 
INCONTESTABILITY
 
The Contract will not be contested after it is issued.
 
SETTLEMENTS
 
The  Contract must be returned to the Company prior to any settlement. Due proof
of the Owner(s)  death (or Annuitant's  death if there  is a non-natural  Owner)
must be received prior to settlement of a death claim.
 
SAFEKEEPING OF THE VARIABLE ACCOUNT'S ASSETS
 
The  Company holds title to  the assets of the  Variable Account. The assets are
kept physically  segregated  and held  separate  and apart  from  the  Company's
general   corporate  assets.  Records  are   maintained  of  all  purchases  and
redemptions of the Portfolio shares held by each of the variable Sub-accounts.
<PAGE>
7
 
The Funds  do not  issue  certificates and,  therefore,  the Company  holds  the
Account's  assets in open account in lieu  of stock certificates. See the Funds'
prospectuses for a more complete description of the custodian of the Funds.
 
FEDERAL TAX MATTERS
 
INTRODUCTION
 
THE FOLLOWING  DISCUSSION IS  GENERAL AND  IS NOT  INTENDED AS  TAX ADVICE.  THE
COMPANY  MAKES  NO GUARANTEE  REGARDING  THE TAX  TREATMENT  OF ANY  CONTRACT OR
TRANSACTION  INVOLVING  A  CONTRACT.  Federal,   state,  local  and  other   tax
consequences  of ownership or receipt of distributions under an annuity contract
depend on the  individual circumstances  of each  person. If  you are  concerned
about  any tax  consequences with regard  to your  individual circumstances, you
should consult a competent tax adviser.
 
TAXATION OF GLENBROOK LIFE AND ANNUITY COMPANY
 
The Company is taxed as a life insurance company under Part I of Subchapter L of
the Internal Revenue Code. The following discussion assumes that the Company  is
taxed  as  a life  insurance company  under Part  I of  Subchapter L.  Since the
Variable Account is not an entity separate from the Company, and its  operations
form  a part  of the Company,  it will not  be taxed separately  as a "regulated
Investment Company"  under  Subchapter M  of  the Code.  Investment  income  and
realized  capital gains are automatically applied to increase reserves under the
contract. Under existing federal income tax  law, the Company believes that  the
Variable  Account investment income  and realized net capital  gains will not be
taxed to the  extent that  such income  and gains  are applied  to increase  the
reserves under the contract.
 
Accordingly,  the Company  does not  anticipate that  it will  incur any federal
income tax liability  attributable to  the Variable Account,  and therefore  the
Company does not intend to make provisions for any such taxes.
 
However, if changes in the federal tax laws or interpretations thereof result in
the Company being taxed on income or gains attributable to the Variable Account,
then  the Company may impose a charge against the Variable Account (with respect
to some or all contracts) in order to set aside provisions to pay such taxes.
 
EXCEPTIONS TO THE NON-NATURAL OWNER RULE
 
There are  several exceptions  to the  general  rule that  contracts held  by  a
non-natural  owner are not  treated as annuity contracts  for federal income tax
purposes. Contracts will generally be treated as held by a natural person if the
nominal owner is a trust or other entity which holds the contract as agent for a
natural person. However, this special exception will not apply in the case of an
employer who is the nominal owner  of an annuity contract under a  non-qualified
deferred  compensation arrangement  for its  employees. Other  exceptions to the
non-natural owner rule are: (1) contracts acquired by an estate of a decedent by
reason of  the death  of  the decedent;  (2)  certain qualified  contracts;  (3)
contracts  purchased  by employers  upon  the termination  of  certain qualified
plans; (4)  certain  contracts used  in  connection with  structured  settlement
agreements,  and (5) contracts purchased with  a single premium when the annuity
starting date  is  no  later than  a  year  from purchase  of  the  annuity  and
substantially  equal  periodic  payments  are  made,  not  less  frequently than
annually, during the annuity period.
<PAGE>
8
 
PENALTY TAX ON PREMATURE DISTRIBUTIONS
 
There is a 10% penalty tax on the taxable amount of any payment received from  a
non-qualified  annuity contract unless the payment  is: (1) made after the owner
reaches 59 1/2; (2) attributable to the owner's disability; (3) attributable  to
investment  before August  14, 1982, including  earnings on  pre-August 14, 1982
investments; (4) made from certain qualified contracts; (5) made after the death
of the owner; (6)  made under an  immediate annuity contract;  (7) made from  an
annuity  purchased and held by  an employer upon the  termination of a qualified
retirement plan; (8) made under a qualified funding asset; (9) made as part of a
series of  substantially  equal  periodic payments  (not  less  frequently  than
annually) for the life or life expectancy of the owner or the joint lives or the
joint  life expectancies of the owner  and designated beneficiary. Similar rules
apply in the case of qualified contracts.
 
IRS REQUIRED DISTRIBUTION AT DEATH RULES
 
In order to be considered an  annuity contract for federal income tax  purposes,
an  annuity contract must provide: (1) if any owner dies on or after the annuity
start date but before the entire interest in the contract has been  distributed,
the  remaining portion of such interest must  be distributed at least as rapidly
as under the method  of distribution being  used as of the  date of the  owner's
death;  (2)  if any  owner  dies prior  to the  annuity  start date,  the entire
interest in the contract will be distributed within five years after the date of
the owner's  death. These  requirements  are satisfied  if  any portion  of  the
owner's  interest  which is  payable to  (or  for the  benefit of)  a designated
beneficiary is distributed over the life  of such beneficiary (or over a  period
not   extending  beyond  the  life  expectancy   of  the  beneficiary)  and  the
distributions begin  within  one year  of  the  owner's death.  If  the  owner's
designated beneficiary is the surviving spouse of the owner, the contract may be
continued  with  the surviving  spouse as  the new  owner. If  the owner  of the
contract is a  non-natural person,  then the annuitant  will be  treated as  the
owner  for purposes of applying the distribution  at death rules. In addition, a
change in the  annuitant on a  contract owned  by a non-natural  person will  be
treated as the death of the owner.
 
QUALIFIED PLANS
 
This annuity contract may be used with several types of qualified plans. The tax
rules  applicable to participants in such  qualified plans vary according to the
type of  plan and  the terms  and conditions  of the  plan itself.  Adverse  tax
consequences  may  result  from excess  contributions,  premature distributions,
distributions  that  do  not  conform  to  specified  commencement  and  minimum
distribution  rules, excess distributions and in other circumstances. Owners and
participants under the plan and annuitants and beneficiaries under the  contract
may  be subject to the terms and conditions  of the plan regardless of the terms
of the contract.
 
TYPES OF QUALIFIED PLANS
 
INDIVIDUAL RETIREMENT ANNUITIES
 
Section 408  of  the Code  permits  eligible  individuals to  contribute  to  an
individual  retirement  program  known  as  an  Individual  Retirement  Annuity.
Individual Retirement Annuities are  subject to limitations  on the amount  that
can  be contributed  and on  the time  when distributions  may commence. Certain
distributions from other  types of  qualified plans may  be "rolled  over" on  a
tax-deferred basis into an Individual Retirement Annuity.
<PAGE>
9
 
SIMPLIFIED EMPLOYEE PENSION PLANS
 
Section  408(k) of  the Code allows  employers to  establish simplified employee
pension plans for  their employees  using the  employees' individual  retirement
annuities  if  certain criteria  are met.  Under these  plans the  employer may,
within  specified  limits,  make  deductible  contributions  on  behalf  of  the
employees to their individual retirement annuities.
 
TAX SHELTERED ANNUITIES
 
Section  403(b) of  the Code  permits public  school employees  and employees of
certain types of tax-exempt organizations (specified in Section 501(c)(3) of the
Code) to have their employers purchase  annuity contracts for them, and  subject
to  certain limitations,  to exclude the  purchase payments  from the employees'
gross income. An annuity  contract used for a  Section 403(b) plan must  provide
that  distributions attributable  to salary  reduction contributions  made after
12/31/88, and all earnings on salary  reduction contributions, may be made  only
after  the employee  attains age 59  1/2, separates from  service, dies, becomes
disabled  or  on  the  account   of  hardship  (earnings  on  salary   reduction
contributions may not be distributed for hardship).
 
CORPORATE AND SELF-EMPLOYED PENSION AND PROFIT SHARING PLANS
 
Sections  401(a) and 403(a) of the  Code permit corporate employers to establish
various types of tax favored  retirement plans for employees. The  Self-Employed
Individuals  Retirement Act of 1962, as  amended, (commonly referred to as "H.R.
10" or  "Keogh")  permits self-employed  individuals  to establish  tax  favored
retirement  plans for themselves and their  employees. Such retirement plans may
permit the purchase of annuity contracts in order to provide benefits under  the
plans.
 
STATE AND LOCAL GOVERNMENT AND TAX-EXEMPT ORGANIZATION DEFERRED COMPENSATION
PLANS
 
Section  457 of the  Code permits employees  of state and  local governments and
tax-exempt organizations to defer a portion of their compensation without paying
current taxes.  The  employees must  be  participants in  an  eligible  deferred
compensation  plan. Under these plans, contributions made for the benefit of the
employees  will  not  be  includible  in  the  employees'  gross  income   until
distribution from the plan.
 
SALES COMMISSIONS
 
Commissions  paid to registered  representatives may vary,  but in aggregate are
not anticipated  to exceed  6.0% of  any purchase  payment. In  addition,  under
certain  circumstances, certain sellers of the Contracts may be paid persistency
bonuses which will  take into account,  among other things,  the length of  time
purchase  payments  have been  held  under a  Contract,  and Contract  Values. A
persistency bonus is not expected  to exceed 0.25%, on  an annual basis, of  the
Contract  Values considered in connection with  the bonus. These commissions are
intended to cover distribution expenses.
 
VARIABLE ACCOUNT FINANCIAL STATEMENTS
<PAGE>
INDEPENDENT AUDITORS' REPORT
 
TO THE BOARD OF DIRECTORS AND SHAREHOLDER OF
GLENBROOK LIFE AND ANNUITY COMPANY
 
We  have audited the accompanying Statement of  Net Assets of Glenbrook Life And
Annuity Company  Variable Annuity  Account (the  "Account") as  of December  31,
1995, and the related Statements of Operations and Changes in Net Assets for the
period  from October 6, 1995 (date  operations commenced), to December 31, 1995,
of the Capital Growth,  Investment Grade Bond,  Aggressive Growth, Value  Income
Portfolios  and the Prime Money Fund  that comprise the Account. These financial
statements  are   the   responsibility   of  the   Account's   management.   Our
responsibility  is to express an opinion  on these financial statements based on
our audit.
 
We conducted our audit in accordance with generally accepted auditing standards.
Those standards require that we plan and perform the audit to obtain  reasonable
assurance   about  whether  the  financial   statements  are  free  of  material
misstatement. An audit includes examining, on a test basis, evidence  supporting
the amounts and disclosures in the financial statements. Our procedures included
confirmation  of securities owned  at December 31, 1995.  An audit also includes
assessing the  accounting  principles used  and  significant estimates  made  by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audit provides a reasonable basis for our opinion.
 
In our  opinion,  such financial  statements  present fairly,  in  all  material
respects, the financial position of the Account as of December 31, 1995, and the
results  of its operations  and the changes in  net assets of  each of the funds
comprising the Account  for the  period from  October 6,  1995 (date  operations
commenced),  to  December  31,  1995,  in  conformity  with  generally  accepted
accounting principles.
 
/s/ DELOITTE & TOUCHE LLP
Chicago, Illinois
 
March 1, 1996
 
                                      F-1
<PAGE>
          GLENBROOK LIFE AND ANNUITY COMPANY VARIABLE ANNUITY ACCOUNT
                            STATEMENT OF NET ASSETS
                               DECEMBER 31, 1995
 
<TABLE>
<CAPTION>
ASSETS
<S>                                                                              <C>
  Investments in the STI Classic Variable Trust:
    Capital Growth Portfolio
      354,551 shares (cost $3,594,555).........................................  $3,777,951
    Investment Grade Bond Portfolio
      294,052 shares (cost $2,944,428).........................................   3,012,573
    Aggressive Growth Portfolio
      331,862 shares (cost $3,334,229).........................................   3,409,003
    Value Income Portfolio
      376,142 shares (cost $3,814,241).........................................   4,014,776
 
  Investments in the Insurance Management Series:
    Prime Money Fund
      1,333,324 shares (cost $1,333,324).......................................   1,333,324
                                                                                 ----------
          Total assets.........................................................  15,547,627
 
LIABILITIES
  Payable to Glenbrook Life and Annuity Company --
    Accrued contract maintenance charges.......................................         674
                                                                                 ----------
          Net assets...........................................................  $15,546,953
                                                                                 ----------
                                                                                 ----------
 
COMPONENTS OF NET ASSETS
  Equity of Contractholders                                                      $5,016,998
  Equity of Glenbrook Life and Annuity Company                                   10,529,955
                                                                                 ----------
                                                                                 $15,546,953
                                                                                 ----------
                                                                                 ----------
</TABLE>
 
SEE NOTES TO FINANCIAL STATEMENTS.
 
                                      F-2
<PAGE>
          GLENBROOK LIFE AND ANNUITY COMPANY VARIABLE ANNUITY ACCOUNT
                            STATEMENT OF OPERATIONS
                      FOR THE PERIOD FROM OCTOBER 6, 1995
                (DATE OPERATIONS COMMENCED) TO DECEMBER 31, 1995
 
<TABLE>
<CAPTION>
                                                                       INSURANCE
                                                                       MANAGEMENT
                                  STI CLASSIC VARIABLE TRUST             SERIES
                          -------------------------------------------  ----------
                                     INVESTMENT
                           CAPITAL     GRADE     AGGRESSIVE   VALUE      PRIME
                           GROWTH       BOND      GROWTH     INCOME      MONEY
                          PORTFOLIO  PORTFOLIO   PORTFOLIO  PORTFOLIO     FUND       TOTAL
                          ---------  ----------  ---------  ---------  ----------  ---------
<S>                       <C>        <C>         <C>        <C>        <C>         <C>
INVESTMENT INCOME:
  Dividends.............  $ 12,349   $  34,320   $ 15,808   $ 22,244   $   6,513   $  91,234
  Less charges from
   Glenbrook Life and
   Annuity Company:
    Mortality and
     expense risk.......    (1,148 )      (500 )     (994 )   (1,388 )    (2,459 )    (6,489)
    Administrative
     expense............       (92 )       (40 )      (79 )     (111 )      (197 )      (519)
                          ---------  ----------  ---------  ---------  ----------  ---------
Net investment income...    11,109      33,780     14,735     20,745       3,857      84,226
                          ---------  ----------  ---------  ---------  ----------  ---------
REALIZED AND UNREALIZED
 GAINS AND LOSSES ON
 INVESTMENTS:
  Realized gains and
   losses from sales of
   investments:
    Proceeds from
     sales..............       213         213        330        246     478,457     479,459
    Cost of investments
     sold...............      (210 )      (212 )     (332 )     (240 )  (478,457 )  (479,451)
                          ---------  ----------  ---------  ---------  ----------  ---------
Net realized gains and
 losses.................         3           1         (2 )        6          --           8
                          ---------  ----------  ---------  ---------  ----------  ---------
Change in unrealized
 gains and losses.......   183,396      68,145     74,774    200,535          --     526,850
                          ---------  ----------  ---------  ---------  ----------  ---------
Net gains and losses on
 investments............   183,399      68,146     74,772    200,541          --     526,858
                          ---------  ----------  ---------  ---------  ----------  ---------
CHANGE IN NET ASSETS
 RESULTING FROM
 OPERATIONS.............  $194,508   $ 101,926   $ 89,507   $221,286   $   3,857   $ 611,084
                          ---------  ----------  ---------  ---------  ----------  ---------
                          ---------  ----------  ---------  ---------  ----------  ---------
</TABLE>
 
SEE NOTES TO FINANCIAL STATEMENTS.
 
                                      F-3
<PAGE>
          GLENBROOK LIFE AND ANNUITY COMPANY VARIABLE ANNUITY ACCOUNT
                       STATEMENT OF CHANGES IN NET ASSETS
                      FOR THE PERIOD FROM OCTOBER 6, 1995
                (DATE OPERATIONS COMMENCED) TO DECEMBER 31, 1995
 
<TABLE>
<CAPTION>
                                                                     INSURANCE
                                                                    MANAGEMENT
                              STI CLASSIC VARIABLE TRUST              SERIES
                    ----------------------------------------------  -----------
                                INVESTMENT
                     CAPITAL      GRADE     AGGRESSIVE    VALUE        PRIME
                      GROWTH       BOND       GROWTH      INCOME       MONEY
                    PORTFOLIO   PORTFOLIO   PORTFOLIO   PORTFOLIO    PORTFOLIO      TOTAL
                    ----------  ----------  ----------  ----------  -----------  -----------
<S>                 <C>         <C>         <C>         <C>         <C>          <C>
FROM OPERATIONS:
  Net investment
   income.........  $   11,109  $  33,780   $  14,735   $   20,745  $    3,857   $    84,226
  Net realized
   gains and
   losses.........           3          1          (2 )          6                         8
  Net change in
   unrealized
   gains and
   losses.........     183,396     68,145      74,774      200,535                   526,850
                    ----------  ----------  ----------  ----------  -----------  -----------
                       194,508    101,926      89,507      221,286       3,857       611,084
                    ----------  ----------  ----------  ----------  -----------  -----------
FROM CAPITAL
 TRANSACTIONS:
  Additions
   (deductions):
    Deposits......   3,144,887  2,823,934   3,060,703    3,203,011   2,720,805    14,953,340
    Benefit
     payments.....                                                                        --
    Payments on
    termination...        (845)       (34 )                   (846)     (3,240 )      (4,965)
    Contract
     maintenance
     charges......        (149)       (56 )      (111 )       (179)       (179 )        (674)
    Transfers
     among the
     portfolios
     and with the
     Fixed
     Account,
     net..........     439,401     86,747     258,793      591,325  (1,388,098 )     (11,832)
                    ----------  ----------  ----------  ----------  -----------  -----------
                     3,583,294  2,910,591   3,319,385    3,793,311   1,329,288    14,935,869
                    ----------  ----------  ----------  ----------  -----------  -----------
Increase in net
 assets...........   3,777,802  3,012,517   3,408,892    4,014,597   1,333,145    15,546,953
Net assets,
 beginning of
 period...........          --         --          --           --          --            --
                    ----------  ----------  ----------  ----------  -----------  -----------
Net assets, end of
 period...........  $3,777,802  $3,012,517  $3,408,892  $4,014,597  $1,333,145   $15,546,953
                    ----------  ----------  ----------  ----------  -----------  -----------
                    ----------  ----------  ----------  ----------  -----------  -----------
 
NET ASSET VALUE
 PER UNIT, END OF
 PERIOD...........  $    10.66  $   10.34   $   10.29   $    10.68  $    10.05
                    ----------  ----------  ----------  ----------  -----------
                    ----------  ----------  ----------  ----------  -----------
 
CONTRACTHOLDER
 UNITS
 OUTSTANDING, END
 OF PERIOD........     103,697     40,503      80,549      124,596     132,650
                    ----------  ----------  ----------  ----------  -----------
                    ----------  ----------  ----------  ----------  -----------
</TABLE>
 
SEE NOTES TO FINANCIAL STATEMENTS.
 
                                      F-4
<PAGE>
          GLENBROOK LIFE AND ANNUITY COMPANY VARIABLE ANNUITY ACCOUNT
       NOTES TO FINANCIAL STATEMENTS FOR THE PERIOD FROM OCTOBER 6, 1995
                (DATE OPERATIONS COMMENCED) TO DECEMBER 31, 1995
 
1.  ORGANIZATION
    Glenbrook Life and Annuity Company Variable Annuity Account (the "Account"),
a unit investment trust registered  with the Securities and Exchange  Commission
under  the Investment Company  Act of 1940,  is a Separate  Account of Glenbrook
Life and Annuity Company ("Glenbrook Life"),  which is wholly owned by  Allstate
Life  Insurance Company ("Allstate Life"), a wholly-owned subsidiary of Allstate
Insurance  Company  ("Allstate"),  which  is   wholly  owned  by  The   Allstate
Corporation  (the "Corporation").  The Account  was established  on December 15,
1992, by  resolution of  the Board  of  Directors of  Glenbrook Life  and  began
accepting contractholder deposits on October 6, 1995.
 
    Glenbrook  Life writes certain annuity contracts,  the proceeds of which are
invested at  the discretion  of  the contractholder.  Contractholders  primarily
invest  in units of the  portfolios comprising the Account,  for which they bear
investment risk.  The  Account,  in  turn,  invests  solely  in  shares  of  the
portfolios   of  the  STI  Classic   Variable  Trust  and  Insurance  Management
Series.(collectively the "Funds").  The contractholder  may also  invest in  the
general  account of  Glenbrook Life  ("Fixed Account").  Glenbrook Life provides
administrative and insurance services to the Account for a fee.
 
    During 1995, Glenbrook  Life made  an initial  investment of  $10 million  (
"seed  money") in  the Account to  enhance the diversification  of the Account's
investments. Glenbrook  Life  has  agreed  to  certain  restrictions,  including
requirements  that the  aggregate net  asset value  of any  individual portfolio
equals or exceeds $10 million, excluding the value of shares attributable to the
seed money, prior to redemption, and  that Glenbrook Life shall not redeem  more
than $500,000 from any one portfolio within any 30-day period.
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
Valuation of investments
 
    Investments  consist of shares of  the Funds which are  stated at fair value
based on quoted market prices.
 
Recognition of investment income
 
    Investment income  consists  of dividends  declared  by the  Funds,  and  is
recognized on the date of record.
 
Realized gains and losses
 
    Realized  gains and losses on the sale of shares by the Account are computed
on a weighted average cost ("cost") basis.
 
Contractholder account activity
 
    Account activity is  reflected in  individual contractholder  accounts on  a
daily basis.
 
    For  each year or portion of a year  a contract is in effect, Glenbrook Life
deducts a fixed annual contract maintenance  charge of $30 as reimbursement  for
expenses related to the maintenance of each contract and the Account. The amount
of this charge is guaranteed not to increase over the life of the contract. This
charge  is  waived if  the  total purchase  payments are  $25,000  or more  on a
contract anniversary, or if all money is  allocated to the Fixed Account on  the
contract anniversary.
 
                                      F-5
<PAGE>
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
Federal income taxes
 
    Net  investment income and  realized gains and losses  on investments of the
Account  are  taxable  to  the  contractholders  generally  upon   distribution.
Accordingly, no provision for income taxes has been recorded.
 
3.  MORTALITY AND EXPENSE CHARGES
    Glenbrook Life assumes mortality and expense risks related to the operations
of the Account and deducts charges daily at a rate, on an annual basis, equal to
1.25% of the daily net assets of the Account. Glenbrook Life guarantees that the
amount of this charge will not increase over the life of the contract.
 
4.  ADMINISTRATIVE EXPENSE CHARGE
    Glenbrook Life deducts administrative expense charges daily at a rate, on an
annual  basis, equal to .10% of the daily net assets of the Account. This charge
is designed to cover additional administrative expenses.
 
5.  CONTRACTHOLDER UNITS ISSUED AND REDEEMED
    Contractholder units issued and redeemed by the Account during 1995 were  as
follows:
 
<TABLE>
<CAPTION>
                                                                     INSURANCE
                                                                    MANAGEMENT
                              STI CLASSIC VARIABLE TRUST              SERIES
                    ----------------------------------------------  -----------
                                INVESTMENT
                     CAPITAL      GRADE     AGGRESSIVE    VALUE        PRIME
                      GROWTH       BOND       GROWTH      INCOME       MONEY
                    PORTFOLIO   PORTFOLIO   PORTFOLIO   PORTFOLIO    PORTFOLIO
                    ----------  ----------  ----------  ----------  -----------
<S>                 <C>         <C>         <C>         <C>         <C>
CONTRACTHOLDER
 UNITS OUTSTANDING
 OCTOBER 6, 1995
 (DATE OPERATIONS
 COMMENCED).......          --         --          --           --          --
Contractholder
 unit activity
 from October 6,
 1995 (date
 operations
 commenced) to
 December 31, 1995
  Issued..........     103,890     40,611      80,659      124,696     273,325
  Redeemed........        (193)      (108 )      (110 )       (100)   (140,675 )
                    ----------  ----------  ----------  ----------  -----------
CONTRACTHOLDER
 UNITS
 OUTSTANDING,
 DECEMBER 31,
 1995.............     103,697     40,503      80,549      124,596     132,650
                    ----------  ----------  ----------  ----------  -----------
                    ----------  ----------  ----------  ----------  -----------
</TABLE>
 
UNITS REDEEMED INCLUDES UNITS DEDUCTED FOR ACCRUED CONTRACT MAINTENANCE CHARGES.
 
                                      F-6


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