ATMOS ENERGY CORP
S-3, 2000-01-27
NATURAL GAS DISTRIBUTION
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<PAGE>

    As filed with the Securities and Exchange Commission on January 27, 2000

                                                      Registration No. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                ----------------

                                    FORM S-3
                          REGISTRATION STATEMENT UNDER
                           The Securities Act of 1933

                                ----------------

                            ATMOS ENERGY CORPORATION
             (Exact name of registrant as specified in its charter)

           Texas and Virginia                          75-1743247
    (State or other jurisdiction of                 (I.R.S. Employer
     incorporation or organization)               Identification No.)

                                                 Phillip L. Allbritten
                                               1800 Three Lincoln Centre
       1800 Three Lincoln Centre                    5430 LBJ Freeway
            5430 LBJ Freeway                      Dallas, Texas 75240
          Dallas, Texas 75240                        (972) 934-9227
             (972) 934-9227               (Name, address, including zip code,
   (Address, including zip code, and        and telephone number, including
 telephone number, including area code,     area code, of agent of service)
  of registrant's principal executive
                offices)

     The Commission is requested to mail copies of all orders, notices and
                               communications to:

                            Irwin F. Sentilles, III
                          Gibson, Dunn & Crutcher LLP
                        2100 McKinney Avenue, Suite 1100
                              Dallas, Texas 75201
                                 (214) 698-3100

  Approximate date of commencement of proposed sale to public: From time to
time after this registration statement becomes effective.

  If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. [_]

  If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or
interest reinvestment plans, check the following box. [X]

  If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following
box and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [_]

  If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [_]

  If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [_]

                                ----------------

                        CALCULATION OF REGISTRATION FEE
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
     Title of each                        Proposed       Proposed
       class of             Amount        maximum        maximum       Amount of
     securities to          to be      offering price   aggregate     registration
     be registered        registered    per unit(1)   offering price      fee
- ----------------------------------------------------------------------------------
<S>                     <C>            <C>            <C>            <C>
Common Stock, no par
 value per share
 (includes associated
 Rights(2))........... 2,000,000 shares  $17.34375     $34,687,500       $9,158
</TABLE>
- --------------------------------------------------------------------------------
(1) Estimated solely for the purpose of calculating the registration fee in
    accordance with Rule 457(c), based upon the average of the high and low
    prices per share reported on the New York Stock Exchange Composite Tape on
    January 26, 2000.

(2) Includes, with respect to each share of Common Stock, Rights pursuant to
    the registrant's Rights Agreement, dated as of November 12, 1997, as
    amended, between the registrant and BankBoston, N.A., as Rights Agent, and
    until a triggering event thereunder, the Rights trade with, and cannot be
    separated from, the Common Stock.

  The registrant hereby amends this registration statement on such date or
dates as may be necessary to delay its effective date until the registrant
shall file a further amendment which specifically states that this registration
statement shall hereafter become effective in accordance with Section 8(a) of
the Securities Act of 1933 or until this registration statement shall become
effective on such date as the Commission acting pursuant to said Section 8(a),
may determine.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>

PROSPECTUS

                [LOGO OF ATMOS ENERGY CORPORATION APPEARS HERE]

                            ATMOS ENERGY CORPORATION
                           DIRECT STOCK PURCHASE PLAN

                        2,000,000 Shares of Common Stock

  We are offering common stock to our shareholders, customers, and other
investors under our Direct Stock Purchase Plan. Plan participants may also take
advantage of additional services, all without any fees or commissions.

Plan Services   .  Reinvest cash dividends to purchase shares at a 3% discount
                   from market prices
                .  Purchase our stock at market prices, up to $100,000 per
                   year
                .  Deposit share certificates for safekeeping
                .  Purchase stock monthly by electronic funds transfer
                .  Purchase stock through IRA accounts, including the
                   traditional IRA, the Roth IRA, Education IRA, and the SEP-
                   IRA

New York Stock      On            , 2000, the last reported sale price on the
Exchange Trading    New York Stock Exchange was $      .
Symbol--"ATO"


                               ----------------
    Neither the Securities and Exchange Commission nor any state securities
 commission has approved or disapproved of these securities or passed upon the
 accuracy or adequacy of this prospectus. Any representation to the contrary is
                              a criminal offense.

                               ----------------
                The date of this Prospectus is          , 2000.
<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<S>                                                                          <C>
Summary.....................................................................   3
Available Information.......................................................   4
Incorporation of Certain Documents by Reference.............................   5
Forward-Looking Statements..................................................   6
The Company.................................................................   7
The Offering................................................................   8
Plan of Distribution........................................................   9
The Plan....................................................................  10
Purpose and Advantages......................................................  10
Disadvantages of the Plan...................................................  11
Administration..............................................................  11
Participation...............................................................  12
Enrollment Procedures.......................................................  12
Purchases and Price of Shares...............................................  15
Voluntary Cash Investments and Initial Investments..........................  17
Expenses and Costs..........................................................  18
Reports to Participants.....................................................  19
Stock Certificates and Safekeeping..........................................  19
Individual Retirement Accounts..............................................  21
Electronic Monthly Investments..............................................  22
Transfer of Shares..........................................................  23
Tax Consequences............................................................  24
Termination of Participation................................................  26
Miscellaneous...............................................................  27
Use of Proceeds.............................................................  29
Legal Opinion...............................................................  29
Experts.....................................................................  29
Indemnification of Directors and Officers...................................  29
</TABLE>

                                       2
<PAGE>

                                    SUMMARY

  We offer our Direct Stock Purchase Plan as a service to our shareholders,
customers and other investors. We have designed the plan to provide investors
with a convenient and economical way to purchase our common stock and reinvest
all or a portion of their cash dividends in additional shares. We do not charge
any service fees or brokerage commissions on any purchases of stock under the
plan.

  Each shareholder who currently participates in the plan will remain enrolled
in the plan unless you write the Plan Administrator, BankBoston, N.A., who acts
as the plan's agent for participants in the plan, to close the account or to
change any way you wish to participate in the plan. If you are an investor who
is not already a shareholder who wants to participate in the plan, you may call
BankBoston at 1-800-543-3038, toll free, or complete and return an
authorization form directly to BankBoston. Any investor who is not already one
of our shareholders must make his or her first cash investment of at least $200
to begin participating in the plan. Participants in the plan who wish to
terminate their participation will incur brokerage commissions on the sale of
their stock in the plan of not more than five cents ($.05) per share, any
applicable transfer tax and a fee of $5 charged by BankBoston.

  Participants in the plan may:

  .  Automatically reinvest cash dividends at a 3% discount on all or a
     portion of the shares held in their names in plan accounts.

  .  Invest in stock at market prices by making voluntary cash investments of
     at least $25 up to a maximum of $100,000 each calendar year.

  .  Deposit share certificates for safekeeping.

  .  Make monthly investments by electronic funds transfer from their bank
     accounts.

  .  Establish an IRA that invests in stock through the plan. Available
     alternatives are the traditional IRA, Roth IRA, and the Education IRA.
     Participants may also contribute or roll over amounts to an IRA through
     a plan account. A participant may also establish a SEP-IRA if the
     participant's employer meets certain qualifications.


                                       3
<PAGE>

  BankBoston will use dividends and voluntary cash investments it receives from
participants to buy shares of stock for participants through the plan. Persons
who are not shareholders may make initial investments of at least $200 and not
more than $100,000 per year that BankBoston will use to buy stock under the
plan at current prices. BankBoston may buy shares on the market from brokers or
may buy shares directly from us.

  The terms "we", "our", and "us" refer to Atmos Energy Corporation unless the
context suggests otherwise. The term "you" refers to a prospective investor.

Location of Executive Offices

  Our address is Atmos Energy Corporation, 1800 Three Lincoln Centre, 5430 LBJ
Freeway, Dallas, Texas 75240, and our telephone number is (972) 934-9227.

                             AVAILABLE INFORMATION

  We are subject to the informational requirements of the Securities Exchange
Act of 1934, as amended. Accordingly, we file reports, proxy and information
statements, and other information with the SEC. The public may inspect and copy
(at prescribed rates) the registration statement and the other information that
we have filed with the SEC at the SEC's public reference facilities listed
below.

                                               SEC Regional Public Reference
  SEC Public Reference Room                    Facilities


  450 Fifth Street, N. W.                      Northwest Atrium Center, Room
  Room 1024                                    3190
  Washington, D.C. 20549                       500 West Madison Street
                                               Chicago, Illinois 60661


                                               7 World Trade Center
                                               13th Floor
                                               New York, New York 10048

  In addition, the public may obtain information on the operation of the SEC's
public reference room by calling the SEC at the number listed below.

  SEC Public Reference Room Telephone Number:    1-800-SEC-0330


                                       4
<PAGE>

  We file many of our reports, proxy and information statements, and other
information electronically with the SEC. The public can access these documents
by computer at the SEC's World Wide Web address.

  SEC World Wide Web Address:     http://www.sec.gov

  We have filed with the SEC a registration statement on Form S-3, which
includes amendments and exhibits, under the Securities Act of 1933, as amended.
This prospectus does not contain all the information set forth in the
registration statement, certain parts of which are omitted in accordance with
the rules and regulations of the SEC. Please refer to the registration
statement for further information. Statements contained in this prospectus as
to the contents of any contract or any other document are not necessarily
complete, and in each instance you should refer to the copy of that contract or
other document filed as an exhibit to the registration statement or other
document. A copy of the registration statement and its exhibits and schedules
may be examined without charge at the SEC's Public Reference Room, and copies
of such materials may be obtained at prescribed rates.

                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

  The following documents, which we have previously filed with the SEC pursuant
to the Securities Exchange Act of 1934, are incorporated into this prospectus
by reference and are deemed to be part of it.

  (a) Annual Report on Form 10-K for the fiscal year ended September 30,
      1999; and

  (b) The description of our common stock contained in our Registration
      Statement on Form 8-A dated September 7, 1988 (Commission File No. 1-
      10042) filed pursuant to Section 12 of the Exchange Act and all
      amendments thereto and reports, which have been filed for the purpose
      of updating such description, including, without limitation, our
      Current Report on Form 8-K dated November 12, 1996.

  All documents filed by us pursuant to Sections 13(a), 13(c), 14 or 15(d) of
the Exchange Act after the date of this prospectus and prior to the termination
of the offering of the shares of stock offered hereby also shall be deemed to
be incorporated into this prospectus and to be a part of it from the date of
filing of such documents.

                                       5
<PAGE>

  We will provide without charge to each person to whom this prospectus is
delivered, upon his or her written or oral request, a copy of any or all of the
foregoing documents incorporated into this prospectus, other than exhibits to
those documents (unless the exhibits are specifically incorporated by reference
into those documents). These requests should be directed to our address listed
on page 4.

  Any statement contained in a document, all or a portion of which is
incorporated or deemed to be incorporated by reference into this prospectus,
shall be deemed to be modified or superseded for purposes of this prospectus to
the extent that a statement contained in this prospectus or in any other
subsequently filed document which also is or is deemed to be incorporated by
reference modifies or supersedes such statement. Any statement so modified
shall not be deemed to constitute a part of this prospectus except as so
modified, and any statement so superseded shall not be deemed to constitute
part of this prospectus.

                           FORWARD-LOOKING STATEMENTS

  Statements contained in this prospectus, including the documents that are
incorporated by reference as set forth in "Incorporation of Certain Documents
by Reference," that are not historical facts are "forward-looking statements"
within the meaning of Section 27A of the Securities Act of 1933. Forward-
looking statements are based on management's beliefs as well as assumptions
made by, and information currently available to, management. Because those
statements are based on expectations as to future economic performance and are
not statements of fact, actual results may differ materially from those
projected. Important factors that could cause future results to differ include,
but are not limited to:

  .  national, regional and local economic and competitive conditions,

  .  regulatory and business trends and decisions,

  .  technological developments,

                                       6
<PAGE>


  .  inflation rates,

  .  weather conditions, and

  .  other factors discussed in this and our other filings with the
     Commission.

  All of these factors are difficult to predict and many are beyond our
control. Accordingly, while we believe these forward-looking statements to be
reasonable, there can be no assurance that they will approximate actual
experience or that the expectations derived from them will be realized. When
used in our documents or oral presentations, the words "anticipate," "believe,"
"estimate," "expect," "objective," "projection," "forecast," "goal" or similar
words are intended to identify forward-looking statements.

                                  THE COMPANY

Operations

  We distribute and sell natural gas and propane to over one million
residential, commercial, industrial, agricultural and other customers. We
distribute and sell natural gas through our five operating divisions to
approximately 1,038,000 meters in over 800 cities, towns and communities in
service areas located in Colorado, Georgia, Illinois, Iowa, Kansas, Kentucky,
Louisiana, Missouri, South Carolina, Tennessee, Texas and Virginia. We
transport gas for others through parts of our distribution system. We also
distribute propane to approximately 40,000 customers in Kentucky, North
Carolina, Tennessee and Virginia.

  In our non-regulated business, we provide natural gas storage services
through Atmos Storage, Inc., which owns natural gas storage fields in Kentucky
and Kansas to supplement natural gas used by customers in Kansas, Tennessee,
and other states. We also own a 45% interest in Woodward Marketing, L.L.C., a
privately held company that provides gas marketing and energy management
services to industrial customers, municipalities and local distribution
companies, including our Trans Louisiana, Western Kentucky and United Cities
divisions. In addition, we market gas to industrial and irrigation customers
primarily in West Texas through Enermart Energy Services Trust and to
industrial customers in Louisiana.

                                       7
<PAGE>

  Through United Cities Propane Gas, Inc. we distribute propane at retail and,
to a much lesser extent, on a wholesale basis. We exited the direct
merchandising and repair of propane gas appliances in 1999. We currently have
propane operation and storage centers and storefront offices in Tennessee,
Kentucky, and North Carolina, with a total company storage capacity of
approximately 2.5 million gallons, which serve customers in those states as
well as Virginia.

Formation

  We were organized under the laws of the State of Texas in 1983 as a
subsidiary of Pioneer Corporation for the purposes of owning and operating
Pioneer's natural gas distribution business in Texas. Immediately following the
transfer of the gas distribution business, which Pioneer and its predecessors
operated since 1906, Pioneer distributed the outstanding stock of the
corporation, then known as Energas Company, to its shareholders. In September
1988, we changed our name from Energas Company to Atmos Energy Corporation. As
a result of our merger with United Cities Gas Company in July 1997, we became
incorporated in the Commonwealth of Virginia as well as the State of Texas.

                                  THE OFFERING

  This prospectus relates to 2,000,000 authorized shares of stock offered for
purchase under the plan by shareholders of record, and other investors through
the reinvestment of dividends, voluntary cash investments of at least $25 and
not more than $100,000 per calendar year, and initial investments of at least
$200 and not more than $100,000.

  Shares purchased with reinvested dividends are offered at a 3% discount from
current market prices. Although we have not changed the discount since it was
first offered, we may adjust it depending upon the number of shares purchased
under the plan and other economic conditions that may develop. There is no
maximum number of shares or dollar amount of dividend reinvestment under the
plan.

                                       8
<PAGE>

  There is no discount applicable to shares purchased with initial investments
or voluntary cash investments, including electronic monthly investments. Such
shares are purchased at current market prices. No more than $100,000 of
voluntary cash investments may be made by a participant during each calendar
year and a non-shareholder may not make an initial investment of more than
$100,000. However, after an initial investment is made, a participant is
allowed to make voluntary cash investments up to $100,000 during the next
calendar year.

  The discount on shares purchased with reinvested dividends and the absence of
a maximum on dividend reinvestment may provide an incentive for certain persons
to enter into transactions that would allow them to acquire shares on or before
the dividend record date, reinvest at the discounted purchase price and resell
the shares in order to capture the discount. We have not experienced nor do we
expect significant activity of such nature. Any person engaging in these
transactions may be considered to be an underwriter within the meaning of
section 2(11) of the Securities Act. We have not entered into any arrangement,
either formal or informal, with any person to engage in these transactions.

                              PLAN OF DISTRIBUTION

  The stock being offered hereby is offered pursuant to our dividend
reinvestment and direct stock purchase plan described in this prospectus for
purchase by the plan's agent, which is currently BankBoston, of shares of stock
on the open market or directly from us, at our discretion. Currently, shares of
our stock purchased by participants under the plan are shares purchased on the
open market. In accordance with current SEC rulings, we will not change its
determination regarding the source of purchase of shares under the plan more
than once in any three month period and then only after a determination of the
Board of Directors or the need of our Chief Financial Officer to raise
additional capital has changed or there is another valid reason for such
change. We pay all fees, commissions and expenses incurred in connection with
the plan including the annual administrative fee and IRA administrative fees.
However, a participant is responsible for all commissions and fees relating to
the sale of all or a portion of the shares of stock in his or her plan account
and any fees associated with the termination of an IRA.

                                       9
<PAGE>

                                    THE PLAN

  The following is a question and answer statement of the provisions of our
Direct Stock Purchase Plan:

Purposes and Advantages

1. What is the purpose of the plan?

  The purpose of the plan is to provide to our shareholders, customers and
other investors a simple, convenient and economical way to accumulate and
increase their investment in our stock and to reinvest all or a portion of
their cash dividends in additional shares of stock.

2. What are some of the advantages of the plan?

  -- Participants have the opportunity to reinvest cash dividends at a 3%
     discount on all or a portion of the shares of stock held in their names
     in plan accounts.

  -- Participants in the plan may purchase additional shares of stock at 100%
     of market price by making voluntary cash investments of at least $25 up
     to $100,000 per calendar year. Voluntary cash investments may be made by
     check, money order or electronic funds transfer from a predesignated
     U.S. checking or savings account. (See Question No. 21 regarding the
     electronic monthly investment feature of the plan.)

  -- Persons who are not already shareholders may purchase shares of stock at
     100% of market price and become a participant in the plan by making
     initial investments of at least $200 and not more than $100,000.

  -- All shares of stock are purchased under the plan without charge to plan
     participants or any service fees or brokerage commissions.

  -- The plan offers a "safekeeping" service whereby shareholders of record
     may deposit their stock certificates with the plan's agent and have
     their ownership of such stock maintained on the plan's agent's records
     as part of their plan accounts.


                                       10
<PAGE>

  -- A traditional IRA, Roth IRA, Education IRA or SEP-IRA may be established
     through an individual or employer Simplified Employee Pension
     contribution, or rolled over from an existing IRA (traditional, Roth or
     Education, subject to certain restrictions) or SEP-IRA through the plan.

  -- Participants may direct the plan's agent to transfer, at any time and at
     no cost to the participant, all or a portion of the participant's shares
     held under the plan to another person. (Gift certificates are available
     from the plan's agent.)

  -- Statements of account are mailed to participants after any investment
     activity in the participant's account.

Disadvantages of the Plan

3. What are some of the disadvantages of the plan?

  By not receiving cash dividends, but instead having stock purchased for their
accounts, participants must bear the market risk associated with the stock.
Also, participants have no control over the price at which stock is purchased
or sold for their accounts.

Administration

4. Who administers the plan?

  BankBoston, N.A., through EquiServe L.P., administers the plan, purchases and
holds shares of stock acquired under the plan, maintains records, and sends
statements of account activity to participants. All Enrollment Authorization
Forms and Initial Investment Forms (as described in Question No. 7), voluntary
cash investments, notices of withdrawal and all other matters and
communications related to the plan should be addressed to:

    ATMOS Energy Corporation
    c/o EquiServe L.P.
    Dividend Reinvestment Department
    P. O. Box 8040
    Boston, MA 02266-8040

                                       11
<PAGE>

  Please mention Atmos Energy Corporation in all correspondence and provide
your plan account number and/or Social Security number.

  Participants may also telephone the plan's agent at 781-575-3100 or toll free
at 1-800-543-3038, 9:00 a.m.-6:00 p.m., Eastern time, or may call Atmos toll
free at 1-800-382-8667, 7:30 a.m.-4:30 p.m., Central time for information about
the plan. Questions about IRAs may be directed to the plan's agent for IRA
administration, toll free, at 1-800-472-7428.

Participation

5.  Who is eligible to participate in the plan?

  Any person or entity, whether or not a holder of record of stock, is eligible
to join the plan, provided that (a) the person or entity fulfills the
prerequisites for participation described below under "Enrollment Procedures",
and (b) in the case of citizens or residents of a country other than the United
States, its territories and possessions, participation would not violate local
laws applicable to us or the participant. Shareholders of record who are
currently participants in the plan will remain enrolled in the plan unless such
a shareholder instructs the plan's agent in writing to close the account or to
alter the conditions of participation.

  Participants in our Employee Stock Ownership Plan ("ESOP") are not eligible
to participate in the plan through the ESOP; provided, however, that ESOP
participants who are also shareholders of record are eligible to participate in
the plan with respect to shares held outside the ESOP, or they may join the
plan by making an initial investment.

Enrollment Procedures

6. How does a person participate in the plan?

  (a) Shareholders of record--After being furnished a copy of this
      prospectus, a record holder of stock may join the plan by completing
      and returning to the plan's agent an Enrollment Authorization Form.
      (See Question No. 7.)

                                       12
<PAGE>

  (b) Beneficial Owners--After being furnished a copy of this prospectus, a
      beneficial owner whose shares are registered in a name other than his
      or her own (for example, in the name of a broker or bank nominee) may
      participate by making arrangements with his or her broker or bank to
      participate on his or her behalf through the Depository Trust Company
      Dividend Reinvestment Service. Brokers and nominees owning stock at
      Depository Trust Company may participate in the plan through this
      service. Neither we nor BankBoston are responsible for any fees that
      may be charged by such broker or bank.

  (c) Persons not presently owners of shares of stock--After being furnished
      a copy of this prospectus, a person not presently owning stock may
      enroll in the plan by completing and returning to the plan's agent an
      Initial Investment Form, and making an initial investment in the form
      of a check or money order in an amount not less than $200 or more than
      $100,000. (See Questions No. 7 and 14.)

  (d) Establishment or rollover of an IRA or SEP-IRA--Individuals may use the
      plan to establish an IRA (traditional IRA, Roth IRA or Education IRA)
      or SEP-IRA and to make individual or employer Simplified Employee
      Pension contributions to the IRA (traditional IRA, Roth IRA or
      Education IRA) or SEP-IRA or to roll over an existing IRA (traditional
      IRA, Roth IRA or Education IRA, subject to certain restrictions) or
      SEP-IRA or other qualified plan distribution. (See Question No. 20.)

7. What do the Enrollment Authorization Form and the Initial Investment Form
   provide?

  The Enrollment Authorization Form provides for the purchase of additional
shares of stock by a shareholder of record through the following investment
options:

  "Full Dividend Reinvestment"--The plan's agent will apply all cash dividends
on all shares then or subsequently registered in a participant's name, together
with any voluntary cash payments, toward the purchase of additional shares of
stock.

  "Partial Dividend Reinvestment"--A participant may elect to reinvest cash
dividends paid on only a portion of the shares registered in the participant's
name and held in certificated form or in the participant's plan accounts by
designating such election on the Enrollment Authorization Form.

                                       13
<PAGE>

Participants electing partial reinvestment of cash dividends must designate the
number of whole shares for which they choose to receive cash dividends. Cash
dividends will be sent to participants by check or deposited electronically
into a bank checking or savings account, if requested. Dividends paid on all
other plan shares, together with voluntary cash investments, will be applied
toward the purchase of additional shares of stock.

  "Voluntary Cash Investments Only"--A participant will continue to receive
cash dividends on shares registered in his or her name in the usual manner, and
the plan's agent will apply all voluntary cash investments received toward the
purchase of additional shares of stock. Shares purchased with voluntary cash
investments will be held in the participant's plan account unless otherwise
directed, and dividends paid on these shares will be paid in cash or deposited
electronically into the participant's bank account, if requested.

  Participants may elect to have cash dividends deposited electronically into a
bank checking or savings account at no charge by completing and submitting to
the plan's agent an Electronic Deposit of Dividends Enrollment Form and a
voided check or deposit slip. The Electronic Deposit of Dividends Enrollment
Forms are available upon request from both the Company and the plan's agent.

  The Initial Investment Form allows a person who is not a shareholder of
record to purchase shares of stock with a minimum investment of $200 up to a
maximum investment of $100,000 and thus become a participant in the plan. The
form contains the required certification as to backup withholding. A
participant may elect to purchase shares through full or partial dividend
reinvestment or voluntary cash investments only, and may change the number of
shares subject to dividend reinvestment from time to time by completing and
submitting to the plan's agent a new Enrollment Authorization Form. To be
effective with respect to a particular dividend, any change in the reinvestment
election must be received by the plan's agent on or before the record date for
such dividend. It is not necessary for participants to hold shares in
certificated form to receive cash dividends on all or a portion of their whole
shares.

                                       14
<PAGE>

8. When may a person join the plan?

  After receiving a copy of this prospectus, shareholders of record may join
the plan at any time by completing an Enrollment Authorization Form and mailing
it to the plan's agent. After receiving a copy of this prospectus, non-
shareholders may enroll in the plan at any time by making an initial
investment; provided, however, that any investment received as an initial
investment without a properly completed Initial Investment Form will be
returned and no action will be taken. Once in the plan, a participant will
remain a participant until he or she discontinues participation. If an
Enrollment Authorization Form requesting reinvestment of dividends is received
by the plan's agent on or before the record date for a dividend payment, then
that dividend payment will be applied toward the purchase of shares of stock.
Record dates are ordinarily about the 25th day of February, May, August and
November. However, when the 25th day of those months falls on a holiday, then
the dividend record date would ordinarily be the first succeeding business day.

  If an Enrollment Authorization Form requesting reinvestment of dividends is
received by the plan's agent from a shareholder after the record date
established for a particular dividend, then the reinvestment of dividends will
begin on the dividend payment date following the next record date if that
shareholder is still a holder of record.

Purchases and Price of Shares

9. What is the source of stock purchased under the plan?

  At our discretion, shares of stock will be purchased either directly from us,
in which event the shares will be either authorized but unissued shares or
shares held by us as treasury stock, or on the open market.

10. When will shares be purchased under the plan?

  Purchases made directly from us will be made on the relevant Investment Date
(as defined below). Purchases on the open market will begin on the Investment
Date and will be completed no

                                       15
<PAGE>

later than 30 days from that date except where completion at a later date is
necessary or advisable under any applicable federal securities laws. These
purchases may be made on the New York Stock Exchange or any other securities
exchange where such shares are traded, in the over-the-counter market or by
negotiated transactions and may be subject to terms with respect to price,
delivery and other terms as the plan's agent may agree. Neither we nor any
participant shall have any authority or power to direct the time or price at
which shares may be purchased, or the selection of the broker or dealer through
or from whom purchases are to be made.

  When shares are purchased on the open market, participants become owners of
shares as of the date of settlement and the reports sent to participants will
reflect such settlement date. (See Question No. 17.)

  There are at least four (4) Investment Dates each month. The Investment Dates
will be the first business day of each week, except for any week which contains
a dividend payment date, in which event the dividend payment date will become
the Investment Date; provided, however, that if the dividend payment date is on
a Friday, the Investment Date will be the following Monday. If, however, an
Investment Date falls on a date on which the New York Stock Exchange is closed,
the first succeeding day on which the New York Stock Exchange is open will be
the Investment Date.

11. What will be the price to the participant of shares purchased under the
    plan?

  The price to the participant of shares purchased under the plan with
reinvested dividends will be 97% of the average price (as defined below).
Purchases of stock made with voluntary cash investments and initial investments
will be made at 100% of such average price. In the case of purchases of stock
from us, the average price is determined by averaging the high and low sales
prices of stock as reported on the New York Stock Exchange-Composite
Transactions on the relevant Investment Date. If no trading in stock occurs on
the New York Stock Exchange on the relevant Investment Date, the purchase price
per share will be determined by averaging the high and low sales prices per
share on the trading day immediately preceding the Investment Date and the
trading day immediately following the Investment Date.

  In the case of purchases of stock on the open market, the average price will
be the weighted average purchase price of shares purchased for that particular
Investment Date.

                                       16
<PAGE>

12. How many shares of stock will be purchased for participants?

  The number of shares to be purchased depends on the amount of the
participant's dividends, if any, and any voluntary cash investments or initial
investments received by the plan's agent. Each participant's account will be
credited with the number of shares, including fractions computed to three
decimal places, equal to the total amount invested divided by the purchase
price. There is no maximum number of shares of stock that can be purchased with
reinvested dividends.

Voluntary Cash Investments and Initial Investments

13. How does the voluntary cash investment feature of the plan work?

  All eligible shareholders of record (except for brokers and nominees) who
have submitted a signed Enrollment Authorization Form and new investors
submitting an Initial Investment Form are eligible to make voluntary cash
investments at any time. Payments may be made by check or money order or may be
deducted electronically on a monthly basis from a financial institution
account. (See Question No. 21.) All those investments must be payable to
BankBoston in U.S. dollars and drawn against a U.S. bank. BankBoston will not
accept third party checks. BankBoston will apply any voluntary cash investment
or initial investment received from a participant to the purchase of shares of
stock for the account of the participant on the next Investment Date if that
stock is purchased from us, and as soon as practicable beginning on the
Investment Date if the stock is purchased on the open market.

  In the event that any check or electronic monthly investment is returned
unpaid for any reason, the plan's agent will consider the request for
investment of that money null and void and shall immediately remove from the
participant's account shares, if any, purchased upon the prior credit of that
investment. A fee of $25 will also be assessed against the participant's
account. The plan's agent shall then be entitled to sell those shares to
satisfy any uncollected amounts. If the net proceeds of the sale of those
shares are insufficient to satisfy the balance of any uncollected amounts, the
plan's agent shall be entitled to sell additional shares from the participant's
account to satisfy the uncollected balance.

                                       17
<PAGE>

  Brokers or nominees participating on behalf of beneficial owners may utilize
only the dividend reinvestment feature of the plan and may not utilize the
voluntary cash investment feature of the plan. Therefore, if shares of stock
are held by a broker or nominee and the owner of those shares wishes to
participate in the voluntary cash investment feature of the plan, that owner
must become a shareholder of record by having all or part of those shares
transferred to that owner's name or make an initial investment and become a
participant in the plan.

14. How are initial investments made?

  Initial investments must be at least $200 and not more than $100,000 in the
form of a check or money order, and must be included with the completed Initial
Investment Form and returned to the plan's agent at the address listed on the
form.

15. When will voluntary cash investments and initial investments received by
    the plan's agent be invested?

  Voluntary cash investments and initial investments received by the plan's
agent no later than 12:00 noon on the business day preceding an Investment Date
will be held by the plan's agent and invested beginning on the next Investment
Date following its receipt of funds. No interest will be paid on amounts held
by the plan's agent pending investment. After sending a voluntary cash
investment or initial investment, if a participant changes his or her mind and
decides he or she does not want to participate, then, upon a participant's
written request received by the plan's agent at least two business days prior
to the applicable Investment Date, a voluntary cash investment or initial
investment will be returned to the participant. However, no refund of a check
or money order will be made until the funds have been actually received by the
plan's agent.

Expenses and Costs

16. What are the costs to participants in the plan?

  For plan participants, there are no brokers' commissions and no fees or
service charges connected with stock purchases. We pay these costs, along with
any costs for administration of the plan, including fees for administration of
an IRA. (See Question No. 20.) However, participants are charged a fee for
selling shares through the plan. (See Question No. 26.)

                                       18
<PAGE>

Reports to Participants

17. What reports will be sent to participants in the plan?

  Each participant will receive a statement of account showing amounts invested
with voluntary cash investments, initial investments, the purchase price of
shares purchased with reinvested dividends, including any discount received on
that purchase, the number of shares purchased and other information resulting
from investment activity for the year to date. Each statement contains a form
that can be used to deposit shares for safekeeping, make voluntary cash
investments or withdraw shares from the plan. At each year-end, the statement
will include all information pertaining to a participant's account for such
year and should be retained for federal and state income tax purposes. In
addition, each participant will receive copies of the same communications sent
to every other holder of stock, including our quarterly reports, Annual Report
to Shareholders, and the Notice of Annual Meeting and Proxy Statement. Each
participant will receive annually Internal Revenue Service information on Form
1099-DIV for reporting dividend income received.

Stock Certificates and Safekeeping

18. What is the safekeeping feature of the plan and how does it work?

  At the time of enrollment in the plan, or at any later time, participants may
use the plan's safekeeping service to deposit with the plan's agent stock
registered in the name of the participant. Shares deposited will be transferred
into the name of the plan's agent or its nominee and credited to the
participant's account under the plan. After that time, those shares will be
treated in the same manner as shares purchased through the plan.

  By using the plan's safekeeping service, participants do not bear the risk
associated with loss, theft or destruction of stock certificates. Also, because
shares deposited with the plan's agent are treated in the same manner as shares
purchased through the plan, they may be transferred or sold through the plan in
a convenient and efficient manner. Dividends paid on shares deposited for
safekeeping may be reinvested or paid in cash. Participants may elect to
receive cash dividends on all or a portion of those shares by completing and
submitting to the plan's agent a new Enrollment

                                       19
<PAGE>

Authorization Form indicating the number of whole plan shares for which they
choose to receive cash dividends. Participants may receive cash dividends by
check or electronic deposit into a bank checking or savings account.
Participants may request electronic deposit of dividends by completing and
submitting to the plan's agent an Electronic Deposit of Dividends Enrollment
Form, available from both us and the plan's agent. (See Question No. 7.)

  Participants who wish to deposit their stock certificates with the plan's
agent should consider sending them to the plan's agent by registered mail,
first class mail, or certified mail, return receipt requested, properly
insured, to the following address, since the participant bears the risk of
replacement costs if the certificates are lost in transit:

    EquiServe L.P.
    Dividend Reinvestment Dept.
    P.O. Box 8040
    Boston, Massachusetts 02266-8040

  Certificates sent by overnight delivery service should be addressed to:

    EquiServe L.P.
    Dividend Reinvestment Dept.
    150 Royall Street
    Canton, Massachusetts 02021

  THE STOCK CERTIFICATES SHOULD NOT BE ENDORSED.

19. What happens to shares purchased under the plan?

  Shares purchased under the plan will be automatically held in safekeeping by
the plan's agent in its name or the name of its nominee. The number of shares
(including fractional interests) held for each participant will be shown on
each statement of account. Participants may obtain a new certificate for all or
some of the whole shares of stock held in their plan accounts upon written
request to the plan's agent. Any remaining shares will continue to be held by
the plan's agent.


                                       20
<PAGE>

  Dividends on shares purchased through the plan, whether they are held by the
participant in certificated form or by the plan's agent, may be paid in cash to
the shareholder by check or electronic deposit or reinvested pursuant to the
shareholder's instruction to the plan's agent contained in a completed
Enrollment Authorization Form. Any change in the number of shares subject to
dividend reinvestment must be made by completion of a new Enrollment
Authorization Form.

Individual Retirement Accounts

20. What is the IRA feature of the plan and how does it work?

  The Taxpayer Relief Act of 1997 expanded the options available for retirement
savings. As discussed above, a participant may establish an IRA (traditional,
Roth or Education) or SEP-IRA that invests in our stock through the plan. The
plan may be used to make contributions to it, or to roll over an existing IRA
(traditional, Roth or Education, subject to certain restrictions) or other
qualified plan distribution. A participant may make individual cash
contributions to a plan IRA and, if the participant's employer has established
a Simplified Employee Pension (SEP) plan, may also have the employer's SEP
contributions made to the plan IRA. After being furnished with a copy of this
prospectus and a statement describing the legal rights and requirements of an
IRA (an "IRA Disclosure Statement"), an individual may open an IRA
(traditional, Roth or Education) or SEP-IRA by completing and signing an IRA
Enrollment Form and returning it to the plan's agent with an initial
contribution. The minimum initial contribution for an IRA Plan account is $200.
Rollover contributions from another IRA or qualified plan may be made by a
record holder in any amount. Such a person may transfer from an existing IRA
into a plan IRA by completing an IRA Enrollment Form and IRA Asset Transfer
Form and returning them to the plan's agent. IRA Enrollment Forms, IRA Asset
Transfer Forms, and IRA Disclosure Statements are available upon request from
both the plan's agent for IRA services and us. There are three IRA options
available as follows:

  Traditional IRA--Traditional IRA contributions are allowed for individuals
under age 70 1/2 who have taxable compensation. Tax-deductible contributions
are subject to new adjusted gross income (AGI) phase-out levels, while
nondeductible contributions are allowed regardless of income level. A maximum
individual contribution is $2,000 annually, with tax-deferred growth of
investment. Penalty-free withdrawals can be made to help pay for first-home
purchases or higher education expenses.

                                       21
<PAGE>

  Roth IRA--Contributions are allowed for individuals of any age with an annual
gross income below $160,000 (for those filing joint returns) or $110,000 (for
those filing single returns), but allowed contributions begin to phase out at
an adjusted gross income of $150,000 (for those filing joint returns) and
$95,000 (for those filing single returns). A maximum individual contribution is
$2,000 annually. Investments and earnings grow tax-free. Contributions are not
tax deductible but if the investment stays in the Roth IRA for five years or
more, qualified withdrawals are distributed tax-free (and free of penalty in
most cases). There are no requirements to begin distributions at age 70 1/2.
Penalty-free withdrawals can be made to help pay for first-home purchases. (The
maximum annual contribution between a traditional IRA and Roth IRA is $2,000.)

  Education IRA--Any individual of any age may contribute, subject to the same
income ranges as the Roth IRA, to an Education IRA for a child. Contributions
of up to $500 annually can be made for secondary education expenses for a child
beneficiary under age 18. Contributions are not tax-deductible, but investments
grow tax-free and are not taxed when withdrawn for higher education expenses,
including tuition, room and board, books, and supplies. Withdrawals must be
made by age 30 or the investment will be taxed to the child and will be subject
to a 10% penalty. Unused account balances may be transferred to another family
member's Education IRA.

  The annual fee charged by the plan's agent for administration of an IRA
(traditional, Roth or Education) or SEP-IRA will be paid by the Company.
However, all fees associated with the termination of an IRA (traditional, Roth
or Education) or a SEP-IRA will be paid by the terminating participant,
currently in the amount of $25.

Electronic Monthly Investments

21.What is the electronic monthly investment feature of the plan and how does
   it work?

  Participants may make voluntary cash investments of not less than $25 nor
more than a total of $100,000 during a calendar year by electronic funds
transfer from a predesignated U.S. bank account.

  If a participant has already established a plan account and wishes to
initiate electronic monthly investments, he or she must complete and sign an
Electronic Monthly Investment Form and return it

                                       22
<PAGE>

to the plan's agent together with a voided blank check (for a checking account)
or deposit slip (for a savings account) for the account from which funds are to
be drawn. Electronic Monthly Investment Forms may be obtained from both the
plan's agent and us. Forms will be processed and will become effective as
promptly as practicable.

  If a non-shareholder wishes to establish a plan account by means of an
initial investment, he or she may also initiate electronic monthly investments
by completing the appropriate section of the Initial Investment Form.

  Once an electronic monthly investment is initiated, funds will be drawn from
the participant's designated account on the business day preceding the second
weekly Investment Date of the month and will be invested in shares of stock
beginning on that Investment Date.

  Participants may change the amount of their electronic monthly investment by
completing and submitting to the plan's agent a new Electronic Monthly
Investment Form. To be effective with respect to a particular Investment Date,
however, the new Electronic Monthly Investment Form must be received by the
plan's agent by the 25th day of the month preceding the next Investment Date.
Participants may terminate their electronic monthly investment by notifying the
plan's agent in writing.

Transfer of Shares

22. May a participant assign or transfer all or a part of his or her shares
    held under the plan to another person?

  Yes. If a participant wishes to change the ownership of all or part of his or
her shares held under the plan through gift, private sale or otherwise, the
participant may effect the transfer by mailing to the plan's agent a properly
completed and executed Stock Power or Gift Transfer Form. Transfers of a
participant's shares may be made in whole and/or fractional share amounts;
provided, however, that with respect to any transfer that establishes a new
plan account, at least one whole share must be transferred. The transfer of a
participant's shares is processed in the same manner as the transfer of stock
certificates, including the requirement of a medallion signature guarantee.
Stock Powers and Gift Transfer Forms are available upon request from the plan's
agent.

                                       23
<PAGE>

23. If plan shares are transferred to another person, will the plan's agent
    issue a stock certificate to the transferee?

  If the participant so requests, a stock certificate(s) will be issued to the
transferee. No fractional shares of stock will be issued in certificate form.
Otherwise, shares transferred will continue to be held by the plan's agent
under the plan. An account will be opened in the name of the transferee, if he
or she is not already a participant, the transferee will automatically be
enrolled in the plan under the full dividend reinvestment option, and all
dividends on shares transferred to the transferee's plan account will be
reinvested under the terms of the plan.

24. How will a transferee be advised of his or her stock ownership?

  The transferee will receive a statement showing the number of shares
transferred to and held in the transferee's plan account. At the transferor's
request, a gift certificate evidencing the transfer will be sent to the
transferee.

Tax Consequences

25. What are the federal income tax consequences of participation in the plan?

  The following is a general discussion of certain material federal income tax
consequences with respect to participation in the plan and is based on current
federal income tax law. Plan participants should consult their own tax advisors
to determine particular tax consequences (including state income tax
consequences) that may result from participation in the plan and subsequent
disposition of shares acquired pursuant to the plan. This summary does not
discuss federal or foreign income tax consequences to participants who are not
citizens or residents of the United States or who reside outside of the United
States.

  Reinvested Dividends. In the case of reinvested dividends whereby the plan's
agent acquires shares for a participant's account directly from us, the
participant must include in gross income as a dividend an amount equal to the
fair market value of the shares (as of the date of the distribution) purchased
with the participant's reinvested dividends. The participant's basis in those
shares will also equal the fair market value of the purchased shares on the
dividend payment date. (See Question No. 11.)

                                       24
<PAGE>

  Alternatively, when the plan's agent purchases stock for a participant's
account on the open market with reinvested dividends, the participant must
include in gross income as a dividend an amount equal to the full amount of the
cash dividend used to purchase those shares plus that portion of any brokerage
commissions paid by the plan's agent which are attributable to the purchase of
the participant's shares. The participant's basis in plan shares held for his
or her account will be equal to their purchase price plus allocable brokerage
commissions.

  Voluntary Cash Investments and Initial Investments. In the case of shares
purchased on the open market with voluntary cash investments or initial
investments, participants must include in gross income as a dividend an amount
equal to any brokerage commissions paid by the Company. The participant's basis
in the shares acquired with voluntary cash investments or initial investments
will be the cost of the shares to the plan's agent plus an allocable share of
any brokerage commissions paid by the Company.

  Receipt or Disposition of Shares. A participant will not realize any taxable
income when he or she receives certificates for whole shares credited to his or
her account under the plan, either upon a request for such certificates or upon
withdrawal from or termination of the plan. However, the participant who
receives, upon withdrawal from or termination of the plan, a cash payment for
the sale of plan shares held for such participant's account or for a fractional
share then held in his or her account will realize gain or loss measured by the
difference between the amount of the cash received and the participant's basis
in such shares or fractional share. This gain or loss will be capital in
character if the shares or fractional shares are a capital asset in the hands
of the participant.

  Tax Information and Backup Withholding. Participants will receive annual tax
information with respect to dividend income received in connection with the
plan, as if those amounts had been paid directly to the participants.
Participants will continue to be subject to the backup withholding requirements
of the federal income tax laws. If these requirements are not satisfied, 31% of
the dividends payable to a participant will be withheld and paid to the
Internal Revenue Service and will not be reinvested under the plan.

  Additional Information. A participant's holding period for shares acquired
pursuant to the plan will begin on the day following the Investment Date. In
the case of corporate shareholders, dividends

                                       25
<PAGE>

may be eligible for the dividends-received deduction. The Tax Equity and Fiscal
Responsibility Act of 1982 imposes certain reporting obligations upon brokers
and other middlemen. As a result, the plan's agent may be required to report to
the Internal Revenue Service and the participant any sale of shares effected on
behalf of a participant. For further information as to tax consequences of
participation in the plan, participants should consult with their own tax
advisors.

Termination of Participation

26. How and when may a participant terminate participation in the plan?

  A participant may terminate participation in the plan any time by notice in
writing to the plan's agent received prior to a dividend record date. Within 10
business days following receipt of notice of termination, the plan's agent will
send the participant a certificate for the whole shares in the participant's
plan account. If the participant so requests, the plan's agent will sell all or
a portion of such shares and remit to the participant the proceeds of the sale,
less brokerage commissions of not more than five cents ($.05) per share, any
transfer tax and a fee of $5 charged by the plan's agent. If the request to
terminate is received by the plan's agent on or after the record date for a
dividend payment, the request to terminate may not become effective until any
dividend paid on the dividend payment date has been reinvested and the shares
of stock purchased are credited to the participant's account under the plan.
The plan's agent, in its sole discretion, may either pay any dividend in cash
or reinvest it in stock on behalf of the terminating participant. If the
dividend is reinvested, the plan's agent will sell the shares purchased and
remit the proceeds to the participant (less commissions and fees, as described
above). Any voluntary cash investment which had been sent to the plan's agent
prior to the request to terminate will also be invested unless return of the
amount is expressly requested in the request for termination and such request
is received at least two business days prior to the relevant Investment Date.
In every case of termination, the participant's interest in a fractional share
will be paid in cash based on the then current market price of stock as
reported on the New York Exchange-Composite Transactions (less commissions and
fees, as described above). The plan's agent, at its discretion, may terminate
any account which contains only a fraction of a share by paying the account
holder the dollar value of such fractional share (less commissions and fees, as
described above).


                                       26
<PAGE>

  After termination, dividends on shares held in certificated form will be paid
to the shareholder in cash or deposited electronically into the shareholder's
bank account, if requested, unless and until the shareholder rejoins the plan,
which he or she may do at any time by completing and returning an Enrollment
Authorization Form to the plan's agent.

  A participant may request that the plan's agent sell some, but not all, of
the shares in a plan account, and remit the proceeds (less commissions and fees
as described above) to the participant as soon as possible. If the request to
sell is received by the plan's agent after the record date for a dividend
payment, any dividends paid on those shares will be reinvested and the shares
of stock purchased will be credited to the participant's plan account.

Miscellaneous

27. What happens when participants sell or transfer all of the shares
    registered in their names?

  When participants sell or transfer all of the stock registered in their
names, the plan's agent will continue to purchase shares of stock with the
dividends on the shares credited to their accounts under the plan until
otherwise notified.

28. What happens if we have a stock rights offering?

  In the case of a stock rights offering, plan participants will receive rights
based upon whole shares of stock registered in their names as of the record
date for any rights offered, and whole shares credited to their accounts under
the plan as of the record date.

29. What happens if we issue a stock dividend or declares a stock split?

  All stock dividends or split shares of common stock distributed by us will be
added to the participant's account unless the participant instructs the plan's
agent in writing at least five (5) days prior to the stock dividend or stock
split payment date to instead issue to the participant a certificate(s) for any
split shares or stock dividends.

30. How will a participant's shares be voted at shareholders' meetings?

  Full and fractional shares held in the plan for a participant will be voted
as the shareholder directs. A participant will receive a proxy card showing the
total number of shares he or she holds, both those registered in the
participant's name and those the participant holds through the plan.

                                       27
<PAGE>

31. May the plan be modified or discontinued?

  We reserve the right to suspend, modify or terminate the plan at any time.
All shareholders, both participants and non-participants in the plan, will be
notified of any suspension, termination or significant modification of the
plan. If the plan is terminated, shares held in the participant's account will
be distributed as described in Question No. 26.

32. Who interprets and regulates the plan?

  We reserve the right to interpret and regulate the plan, as deemed desirable
or necessary, in connection with its operation. Additionally, we and the plan's
agent each reserve the right to terminate enrollment of any participant who
participates in the plan in a manner abusive of the purpose and intent of the
plan as determined by us or plan's agent or in a manner deemed by us or plan's
agent not to be in the best interest of shareholders generally.

33. What are our responsibilities as well as those of the plan's agent under
    the plan?

  Neither we nor the plan's agent will be liable for any good faith act or for
any good faith omission to act, including, without limitation, any claim or
liability arising out of failure to terminate a participant's account upon the
participant's death, the prices at which shares of stock are purchased or sold
for a participant's account, the times when purchases or sales are made, or
fluctuations in the market value of stock. However, nothing contained in this
provision affects a shareholder's right to bring a cause of action based on
alleged violations of the federal securities laws.

34. Does participation in the plan involve any risk?

  The risk to participants is the same as with any other investment in our
stock. A participant may lose an advantage otherwise available from being able
to select more specifically the timing of investment or sale of shares.
Participants must recognize that neither we nor the plan's agent can assure a
profit or protect against a loss on the shares purchased under the plan.


                                       28
<PAGE>

                                USE OF PROCEEDS

  We do not know the number of shares that we will utimately purchase us under
the plan nor the prices at which the shares will be sold. The purpose of the
plan is to provide to our shareholders, customers and other investors a simple,
convenient and economical way to accumulate and increase their investment in
our stock and to reinvest all or a portion of their cash dividends in
additional shares of stock. The plan permits us to increase its shareholder
base and provides us with a relatively inexpensive source of additional
capital. The proceeds are intended to be used for general corporate purposes.

                                 LEGAL OPINION

  The validity of the shares of the stock offered hereby has been passed upon
for us by Gibson, Dunn & Crutcher LLP, 2100 McKinney Avenue, Suite 1100,
Dallas, Texas 75201 and Hunton & Williams, 951 E. Byrd St., Richmond, Virginia
23219.

                                    EXPERTS

  Ernst & Young LLP, independent auditors, have audited the consolidated
financial statements of Atmos Energy Corporation for the year ended September
30, 1999, incorporated by reference in our Annual Report on Form 10-K for the
year ended September 30, 1999, as set forth in its report dated November 9,
1999. We incorporate by reference such consolidated financial statements in
this prospectus in reliance upon such report given upon the authority of such
firm as experts in accounting and auditing.

                   INDEMNIFICATION OF DIRECTORS AND OFFICERS

  The Texas Business Corporation Act and the Virginia Stock Corporation Act
permit, and in some cases require, corporations to indemnify directors and
officers who are or have been a party or are threatened to be made a party to
litigation against judgments, penalties, including excise and similar taxes,
fines, settlements, and reasonable expenses under certain circumstances.
Article IX of our Restated Articles of Incorporation, as amended, and Article
IX of our Amended and Restated Bylaws provide for indemnification of judgments,
penalties, including excise and similar taxes, fines, settlements, and
reasonable expenses and the advance payment or reimbursement of such reasonable
expenses to directors and officers to the fullest extent permitted by law.

                                       29
<PAGE>

  As authorized by Article 2.02-1 of the Texas Business Corporation Act, and
Section 13.1-697 of the Virginia Stock Corporation Act, each of our directors
and officers may be indemnified by us against expenses, including attorney's
fees, judgments, fines and amounts paid in settlement, actually and reasonably
incurred in connection with the defense or settlement of any threatened,
pending or completed legal proceedings in which he is involved by reason of the
fact that he is or was a director or officer of ours if he acted in good faith
and in a manner that he reasonably believed to be in or not opposed to our best
interests, and, with respect to any criminal action or proceeding, if he had no
reasonable cause to believe that his conduct was unlawful. In each case, such
indemnity shall be to the fullest extent authorized by the Texas Business
Corporation Act and the Virginia Stock Corporation Act. If the director or
officer is found liable for willful or intentional misconduct in the
performance of his duty to us, then indemnification will not be made.

  Article X of our Restated Articles of Incorporation, as amended, provides
that no director shall be personally liable to us or our shareholders for
monetary damages for any breach of fiduciary duty as a director except for
liability

  .  for any breach of duty of loyalty to us or our shareholders,

  .  for an act or omission not in good faith or which involves intentional
     misconduct or a knowing violation of law,

  .  for a transaction from which the director received an improper benefit,
     whether or not the benefit resulted from an action taken within the
     scope of the director's office,

  .  for an act or omission for which the liability of a director is
     expressly provided by statute, or

  .  for an act related to an unlawful stock repurchase or payment of a
     dividend.

  In addition, Article IX of our Restated Articles of Incorporation, as
amended, and Article IX of our Amended and Restated Bylaws require us to
indemnify to the fullest extent authorized by law any person made or threatened
to be made party to any action, suit or proceeding, whether criminal, civil,
administrative, arbitrative or investigative, by reason of the fact that such
person is or was a director or officer of ours or serves or served at our
request as a director, officer, partner, venturer, proprietor, trustee,
employee, agent or similar functionary of any other enterprise.


                                       30
<PAGE>

  We maintain an officers' and directors' liability insurance policy insuring
officers and directors against certain liabilities, including liabilities under
the Securities Act of 1933. The effect of such policy is to indemnify such
officers and directors against losses incurred by them while acting in such
capacities.

  Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers or persons controlling us
pursuant to the foregoing provisions, we have been informed that in the opinion
of the Securities and Exchange Commission such indemnification is against
public policy as expressed in the Securities Act and is therefore
unenforceable.

                                       31
<PAGE>

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

  We have not authorized anyone to give any information or make any
representation about us that is different from, or in addition to, that
contained in this prospectus or in any of the materials that we have
incorporated by reference into this document. Therefore, if anyone does give
you information of this sort, you should not rely on it. If you are in a
jurisdiction where offers to sell, or solicitations of offers to purchase, the
securities offered by this document are unlawful, or if you are a person to
whom it is unlawful to direct these types of activities, then the offer
presented in this document does not extend to you. The information contained in
this document speaks only as of the date of this document, unless the
information specifically indicates that another date applies.



- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                                     ATMOS
                                     ENERGY
                                  CORPORATION


[LOGO OF ATMOS ENERGY COPORATION]

                           DIRECT STOCK PURCHASE PLAN


                                ----------------

                                   PROSPECTUS

                                ----------------

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                                                                     3100-DRP-00
<PAGE>

                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution.*

<TABLE>
      <S>                                                               <C>
      Securities and Exchange Commission registration fee.............. $ 9,158
      Printing expenses................................................  40,000
      Accounting fees and expenses.....................................   2,000
      Legal fees and expenses..........................................   5,000
      Miscellaneous expenses...........................................   1,000
                                                                        -------
          Total........................................................ $57,158
                                                                        =======
</TABLE>
- --------
*All fees and expenses will be paid by us. All fees and expenses other than the
   SEC filing fees are estimated.

Item 15. Indemnification of Directors and Officers.

  The Texas Business Corporation Act and the Virginia Stock Corporation Act
permit, and in some cases require, corporations to indemnify directors and
officers who are or have been a party or are threatened to be made a party to
litigation against judgments, penalties, including excise and similar taxes,
fines, settlements, and reasonable expenses under certain circumstances.
Article IX of our Restated Articles of Incorporation, as amended, and Article
IX of our Amended and Restated Bylaws provide for indemnification of judgments,
penalties, including excise and similar taxes, fines, settlements, and
reasonable expenses and the advance payment or reimbursement of such reasonable
expenses to directors and officers to the fullest extent permitted by law.

  As authorized by Article 2.02-1 of the Texas Business Corporation Act, and
Section 13.1-697 of the Virginia Stock Corporation Act, each of our directors
and officers may be indemnified by us against expenses, including attorney's
fees, judgments, fines and amounts paid in settlement, actually and reasonably
incurred in connection with the defense or settlement of any threatened,
pending or completed legal proceedings in which he is involved by reason of the
fact that he is or was a director or officer of ours if he acted in good faith
and in a manner that he reasonably believed to be in or not opposed to our best
interests, and, with respect to any criminal action or proceeding, if he had no
reasonable cause to believe that his conduct was unlawful. In each case, such
indemnity shall be to the fullest extent authorized by the Texas Business
Corporation Act and the Virginia Stock Corporation Act. If the director or
officer is found liable for willful or intentional misconduct in the
performance of his duty to us, then indemnification will not be made.

  Article X of our Restated Articles of Incorporation, as amended, provides
that no director shall be personally liable to us or our shareholders for
monetary damages for any breach of fiduciary duty as a director except for
liability

  . for any breach of duty of loyalty to us or our shareholders,

  . for an act or omission not in good faith or which involves intentional
    misconduct or a knowing violation of law,

  . for a transaction from which the director received an improper benefit,
    whether or not the benefit resulted from an action taken within the scope
    of the director's office,

  . for an act or omission for which the liability of a director is expressly
    provided by statute, or

  . for an act related to an unlawful stock repurchase or payment of a
    dividend.

  In addition, Article IX of our Restated Articles of Incorporation, as
amended, and Article IX of our Amended and Restated Bylaws require us to
indemnify to the fullest extent authorized by law any person made or threatened
to be made party to any action, suit or proceeding, whether criminal, civil,
administrative,

                                      II-1
<PAGE>

arbitrative or investigative, by reason of the fact that such person is or was
a director or officer of ours or serves or served at our request as a director,
officer, partner, venturer, proprietor, trustee, employee, agent or similar
functionary of any other enterprise.

  We maintain an officers' and directors' liability insurance policy insuring
officers and directors against certain liabilities, including liabilities under
the Securities Act of 1933. The effect of such policy is to indemnify such
officers and directors against losses incurred by them while acting in such
capacities.

  Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers or persons controlling us
pursuant to the foregoing provisions, we have been informed that in the opinion
of the Securities and Exchange Commission such indemnification is against
public policy as expressed in the Securities Act and is therefore
unenforceable.

Item 16. Exhibits.

<TABLE>
<CAPTION>
     Exhibit
     Number  Exhibits
     ------- --------
     <C>     <S>
       4.1   Restated Articles of Incorporation, as amended, of the registrant
             (incorporated by reference to Exhibit 3.1 of Form 10-K for fiscal
             year ended September 30, 1997) (File No. 1-10042))
       4.2   Amended and Restated Bylaws of the registrant (incorporated by
             reference to Exhibit 3.2 of Form 10-K for fiscal year ended
             September 30, 1997 (File No. 1-10042))
       4.3   Specimen Common Stock Certificate (incorporated by reference to
             Exhibit 4(b) of Form 10-K for the fiscal year ended September 30,
             1988 (File No. 1-10042))
       4.4   Rights Agreement, dated as of November 12, 1997, between the
             registrant and BankBoston, N.A. (Exhibit 4.1 of Form 8-K dated
             November 12, 1997)
             (File No. 1-10042))
       4.5   First Amendment to Rights Agreement, dated as of August 11, 1999,
             between the registrant and BankBoston, N.A. as Rights Agent
             (Exhibit 2 of Form 8-A, Amendment No. 1, dated August 12, 1999
             (File No. 1-10042))
       5.1   Opinion of Gibson, Dunn & Crutcher LLP, Dallas, Texas, as to the
             validity of the securities being registered
       5.2   Opinion of Hunton & Williams, Richmond, Virginia, as to the
             validity of the securities being registered
      23.1   Consent of Gibson, Dunn & Crutcher LLP, Dallas, Texas (See Exhibit
             5.1)
      23.2   Consent of Hunton & Williams, Richmond, Virginia (See Exhibit 5.2)
      23.3   Consent of Ernst & Young LLP
      24.1   Powers of Attorney (See signature page of this registration
             statement)
      99.1   Enrollment Authorization Form
      99.2   Initial Investment Form (incorporated by reference to Exhibit 99.2
             of Form S-3/A filed October 16, 1997, File No. 333-32475)
      99.3   Electronic Deposit of Dividends Enrollment Form
      99.4   IRA Enrollment Form (incorporated by reference to Exhibit 99.4 of
             Form S-3/A filed October 16, 1997, File No. 333-32475)
      99.5   IRA Asset Transfer Form (incorporated by reference to Exhibit 99.5
             of Form S-3/A filed October 16, 1997, File No. 333-32475)
      99.6   Electronic Monthly Investment Form
</TABLE>

                                      II-2
<PAGE>

Item 17. Undertakings.

  (a) The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to section 13(a) or section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to section 15(d) of the
Securities Act of 1934) that is incorporated by reference in the registration
statement shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time
shall be deemed to be the initial bona fide offering thereof.

  (b) Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors, officers and controlling persons of
the registrant pursuant to the foregoing provisions described in Item 15, or
otherwise, the registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public
policy as expressed in the Act and is, therefore, unenforceable. In the event
that a claim for indemnification against such liabilities (other than the
payment by the registrant of expenses incurred or paid by a director, officer
or controlling person of the registrant in the successful defense of any
action, suit or proceeding) is asserted by such director, officer or
controlling person in connection with the securities being registered, the
registrant will, unless in the opinion of its counsel the matter has been
settled by controlling precedent, submit to a court of appropriate jurisdiction
the question whether such indemnification by it is against public policy as
expressed in the Act and will be governed by the final adjudication of such
issue.

  (c) The undersigned registrant hereby undertakes:

    (1) To file, during any period in which offers or sales are being made,
        a post-effective amendment to this registration statement:

      (i)   To include any prospectus required by section 10(a)(3) of the
            Securities Act of 1933;

      (ii)  To reflect in the prospectus any facts or events arising after the
            effective date of the registration statement (or the most recent
            post-effective amendment thereof) which, individually or in the
            aggregate, represent a fundamental change in the information set
            forth in the registration statement. Notwithstanding the foregoing,
            any increase or decrease in volume of securities offered (if the
            total dollar value of securities offered would not exceed that which
            was registered) and any deviation from the low or high and of the
            estimated maximum offering range may be reflected in the form of
            prospectus filed with the Commission pursuant to Rule 424(b) if, in
            the aggregate, the changes in volume and price represent no more
            than a 20% change in the maximum aggregate offering price set forth
            in the "Calculation of Registration Fee" table in the effective
            registration statement; and

      (iii) To include any material information with respect to the plan
            of distribution not previously disclosed in the registration
            statement or any material change to such information in the
            registration statement;

Provided, however, that paragraphs (c)(1)(i) and (c)(1)(ii) of this section do
not apply if the information required to be included in a post-effective
amendment by those paragraphs is contained in periodic reports filed with or
furnished to the Commission by the registrant pursuant to section 13 or section
15(d) of the Securities Exchange Act of 1934 that are incorporated by reference
in the registration statement.

    (2) That, for the purposes of determining any liability under the
        Securities Act of 1933, each such post-effective amendment shall be
        deemed to be a new registration statement relating to the
        securities offered therein, and the offering of such securities at
        that time shall be deemed to be the initial bona fide offering
        thereof.

    (3) To remove from registration by means of a post-effective amendment
        any of the securities being registered that remain unsold at the
        termination of the offering.

                                      II-3
<PAGE>

                       SIGNATURES AND POWERS OF ATTORNEY

  Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Dallas, State of Texas, on January 27, 2000.

                                          Atmos Energy Corporation

                                                    /s/ Robert W. Best
                                          By: _________________________________
                                              Robert W. Best, Chairman,
                                              President and Chief Executive
                                              Officer

  KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below hereby constitutes and appoints Robert W. Best as his true and lawful
attorney-in-fact and agent, for him and in his name, place and stead, in any
and all capacities, to sign any and all amendments to this registration
statement, including post-effective amendments, and to file the same, with all
exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorney-in-fact and
agent full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all
intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorney-in-fact and agent may lawfully do or cause to
be done by virtue hereof.

  Pursuant to the requirements of the Securities Act of 1933, this registration
statement has been signed by the following persons in the capacities and on the
dates indicated.

<TABLE>
<CAPTION>
             Signature                           Title                    Date
             ---------                           -----                    ----
<S>                                  <C>                           <C>
       /s/ Robert W. Best            Chairman, President and        January 27, 2000
____________________________________  Chief Executive Officer
           Robert W. Best             (Principal Executive
                                      Officer)

      /s/ Larry J. Dagley            Executive Vice President and   January 27, 2000
____________________________________  Chief Financial Officer
          Larry J. Dagley             (Principal Financial
                                      Officer)

    /s/ Tom S. Hawkins, Jr.          Vice President, Planning and   January 27, 2000
____________________________________  Budgeting and Interim
        Tom S. Hawkins, Jr.           Controller (Principal
                                      Accounting Officer)

     /s/ Travis W. Bain II           Director                       January 27, 2000
____________________________________
         Travis W. Bain II

         /s/ Dan Busbee              Director                       January 27, 2000
____________________________________
             Dan Busbee

     /s/ Richard W. Cardin           Director                       January 27, 2000
____________________________________
         Richard W. Cardin

     /s/ Thomas J. Garland           Director                       January 27, 2000
____________________________________
         Thomas J. Garland

</TABLE>


                                      II-4
<PAGE>

<TABLE>
<S>                                  <C>                           <C>
       /s/ Gene C. Koonce            Director                       January 27, 2000
____________________________________
           Gene C. Koonce

      /s/ Vincent J. Lewis           Director                       January 27, 2000
____________________________________
          Vincent J. Lewis

     /s/ Thomas C. Meredith          Director                       January 27, 2000
____________________________________
         Thomas C. Meredith

     /s/ Phillip E. Nichol           Director                       January 27, 2000
____________________________________
         Phillip E. Nichol

       /s/ Carl S. Quinn             Director                       January 27, 2000
____________________________________
           Carl S. Quinn

     /s/ Charles K. Vaughan          Director                       January 27, 2000
____________________________________
         Charles K. Vaughan

          Richard Ware II            Director                       January 27, 2000
____________________________________
          Richard Ware II
</TABLE>

                                      II-5
<PAGE>

                                 EXHIBIT INDEX

<TABLE>
<CAPTION>
     Exhibit
     Number  Exhibits
     ------- --------
     <C>     <S>
       4.1   Restated Articles of Incorporation, as amended, of the registrant
             (incorporated by reference to Exhibit 3.1 of Form 10-K for fiscal
             year ended September 30, 1997) (File No. 1-10042))
       4.2   Amended and Restated Bylaws of the registrant (incorporated by
             reference to Exhibit 3.2 of Form 10-K for fiscal year ended
             September 30, 1997 (File No. 1-10042))
       4.3   Specimen Common Stock Certificate (incorporated by reference to
             Exhibit 4(b) of Form 10-K for the fiscal year ended September 30,
             1988 (File No. 1-10042))
       4.4   Rights Agreement, dated as of November 12, 1997, between the
             registrant and BankBoston, N.A. (Exhibit 4.1 of Form 8-K dated
             November 12, 1997)
             (File No. 1-10042))
       4.5   First Amendment to Rights Agreement, dated as of August 11, 1999,
             between the registrant and BankBoston, N.A. as Rights Agent
             (Exhibit 2 of Form 8-A, Amendment
             No. 1, dated August 12, 1999 (File No. 1-10042))
       5.1   Opinion of Gibson, Dunn & Crutcher LLP, Dallas, Texas, as to the
             validity of the securities being registered
       5.2   Opinion of Hunton & Williams, Richmond, Virginia, as to the
             validity of the securities being registered
      23.1   Consent of Gibson, Dunn & Crutcher LLP, Dallas, Texas (See Exhibit
             5.1)
      23.2   Consent of Hunton & Williams, Richmond, Virginia (See Exhibit 5.2)
      23.3   Consent of Ernst & Young LLP
      24.1   Powers of Attorney (See signature page of this registration
             statement)
      99.1   Enrollment Authorization Form
      99.2   Initial Investment Form (incorporated by reference to Exhibit 99.2
             of Form S-3/A filed October 16, 1997, File No. 333-32475)
      99.3   Electronic Deposit of Dividends Enrollment Form
      99.4   IRA Enrollment Form (incorporated by reference to Exhibit 99.4 of
             Form S-3/A filed October 16, 1997, File No. 333-32475)
      99.5   IRA Asset Transfer Form (incorporated by reference to Exhibit 99.5
             of Form S-3/A filed October 16, 1997, File No. 333-32475)
      99.6   Electronic Monthly Investment Form
</TABLE>

<PAGE>

                                                                     EXHIBIT 5.1



                                January 27, 2000



Atmos Energy Corporation
1800 Three Lincoln Centre
5430 LBJ Freeway
Dallas, Texas  75240

     Re:  Registration Statement on Form S-3
          Atmos Energy Corporation Direct Stock Purchase Plan

Ladies and Gentlemen:

     As counsel for Atmos Energy Corporation, a Texas and Virginia corporation
(the "Company"), we are familiar with the Company's Registration Statement on
Form S-3 (as amended, the "Registration Statement") filed with the Securities
and Exchange Commission (the "SEC") under the Securities Act of 1933 (as
amended, the "Act"), on the date hereof, with respect to the offering and
issuance from time to time by the Company of up to 2,000,000 shares of its
Common Stock, no par value per share (the "Common Stock").  All capitalized
terms which are not defined herein shall have the meanings assigned to them in
the Registration Statement.

     In connection with our examination of documents as hereinafter described,
we have assumed the genuineness of all signatures on, and the authenticity of,
all documents submitted to us as originals and the conformity to original
documents of all documents submitted to us as copies.  With respect to
agreements and instruments executed by natural persons, we have assumed the
legal competency of such persons.

     For the purpose of rendering this opinion, we have made such factual and
legal examination as we deemed necessary under the circumstances, and in that
connection we have examined, among other things, originals or copies of the
following:

     (1)  The Restated Articles of Incorporation of the Company, as amended to
          date;

     (2)  The Bylaws of the Company, as amended to date;

     (3)  Such records of the corporate proceedings of the Company, and such
          other documents that we considered necessary or appropriate for the
          purpose of rendering this opinion; and
<PAGE>

Atmos Energy Corporation
January 27, 2000
Page 2


     (4)  Such other certificates and assurances from public officials, officers
          and representatives of the Company that we considered necessary or
          appropriate for the purpose of rendering this opinion.

     On the basis of the foregoing examination, and in reliance thereon, we are
of the opinion that (subject to compliance with the pertinent provisions of the
Act and to compliance with such securities or "blue sky" laws of any
jurisdiction as may be applicable), when the Common Stock shall have been issued
and sold within the limits and as described in the Registration Statement and in
a manner contemplated in the Registration Statement, including the Prospectus
relating to the offering of such Common Stock, the Common Stock will be validly
issued, fully paid and nonassessable.

     This opinion is limited to the present laws of the State of Texas, the
present federal laws of the United States, and to the present judicial
interpretations thereof and to the facts as they presently exist. We express no
opinion as to the effect of the laws of the Commonwealth of Virginia on any such
issuance, payment and nonassessability of the Common Stock. We undertake no
obligation to advise you as a result of developments occurring after the date
hereof or as a result of facts or circumstances brought to our attention after
the date hereof.

     This opinion may be filed as an exhibit to the Registration Statement.
Consent is also given to the reference to this firm under the caption "Legal
Opinion" in the prospectus contained in the Registration Statement.  In giving
this consent, we do not admit we are included in the category of persons whose
consent is required under Section 7 of the Act or the rules and regulations of
the SEC promulgated thereunder.

                                       Very truly yours,



                                       /s/ GIBSON, DUNN & CRUTCHER LLP

IFS/RWB

<PAGE>

                                                                     EXHIBIT 5.2



                                January 26, 2000



Atmos Energy Corporation
1800 Three Lincoln Centre
5430 LBJ Freeway
Dallas, Texas  75240

                      Registration Statement on Form S-3
                      ----------------------------------
              Atmos Energy Corporation Direct Stock Purchase Plan
              ---------------------------------------------------

Dear Ladies and Gentlemen:

     As Virginia counsel for Atmos Energy Corporation, a Texas and Virginia
corporation (the Company"), we are familiar with the Company's Registration
Statement on Form S-3 (as amended, the "Registration Statement") filed with the
Securities and Exchange Commission (the "SEC") under the Securities Act of 1933
(as amended, the "Act"), on the date hereof, with respect to the offering and
issuance from time to time by the Company of up to 2,000,000 shares of its
common stock, no par value per share (the "Common Stock") under the Company's
Direct Stock Purchase Plan. All capitalized terms which are not defined herein
shall have the meanings assigned to them in the Registration Statement.

     In connection with our examination of documents as hereinafter described,
we have assumed the genuineness of all signatures on, and the authenticity of,
all documents submitted to us as originals and the conformity to original
documents of all documents submitted to us as copies. With respect to agreements
and instruments executed by natural persons, we have assumed the legal
competency of such persons.

     For the purpose of rendering this opinion, we have made such factual and
legal examination as we deemed necessary under the circumstances, and in that
connection we have examined, among other things, originals or copies of the
following:
<PAGE>

January 26, 2000
Page 2


     (1)  The Restated Articles of Incorporation of the Company, as amended to
          date;
     (2)  The Bylaws of the Company, as amended to date;
     (3)  Such records of the corporate proceedings of the Company, and such
other documents that we considered necessary or appropriate for the purpose of
rendering this opinion; and
     (4)  Such other certificates and assurances from public officials, officers
and representatives of the Company that we considered necessary or appropriate
for the purpose of rendering this opinion.

     On the basis of the foregoing examination, and in reliance thereon, we are
of the opinion that (subject to compliance with the pertinent provisions of the
Act, and to compliance with such securities or "blue sky" laws of any
jurisdiction as may be applicable):

     When the Common Stock shall have been authorized, issued and sold within
the limits and as described in the Registration Statement, and in a manner
contemplated in the Registration Statement, including the Prospectus relating to
the offering of such Common Stock, the Common Stock will be validly issued,
fully paid and nonassessable.

     This opinion is limited to the present laws of the Commonwealth of
Virginia, the present federal laws of the United States, and to the present
judicial interpretations thereof and to the facts as they presently exist. We
express no opinion as to the effect of the laws of the State of Texas on any
such issuance, payment and nonassessability of the Common Stock. We undertake no
obligation to advise you as a result of developments occurring after the date
hereof or as a result of facts or circumstances brought to our attention after
the date hereof.

     This opinion may be filed as an exhibit to the Registration Statement.
Consent is also given to the reference to this firm under the caption "Legal
Opinion" in the prospectus contained in the Registration Statement. In giving
this consent, we do not admit we are included in the category of persons whose
consent is required under Section 7 of the Act or the rules and regulations of
the SEC promulgated thereunder.

                                       Very truly yours,

                                       /s/ HUNTON & WILLIAMS

                                       HUNTON & WILLIAMS

<PAGE>

                                                                    Exhibit 23.3


                        CONSENT OF INDEPENDENT AUDITORS
                        -------------------------------


We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3) and related Prospectus of Atmos Energy
Corporation for 2,000,000 shares of common stock and to the incorporation by
reference therein of our reports dated November 9, 1999, with respect to the
consolidated financial statements of Atmos Energy Corporation incorporated by
reference in its Annual Report (Form 10-K) for the year ended September 30, 1999
and the related financial statement schedule included therein, filed with the
Securities and Exchange Commission.


                                       /s/ ERNST & YOUNG LLP


Dallas, Texas
January 26, 2000

<PAGE>

                                                                    Exhibit 99.1

[LOGO OF ATMOS ENERGY CORPORATION APPEARS HERE]     DIRECT STOCK PURCHASE PLAN

                         ENROLLMENT AUTHORIZATION FORM

     This Enrollment Authorization Form, when completed and signed, should be
mailed to the Plan Administrator using the accompanying postage pre-paid
envelope or to the following address: BankBoston, N.A., P.O. Box 8040, Boston,
MA 02266-8040.

     Please do not sign and return this Enrollment Authorization Form unless you
wish to participate in the Company's Direct Stock Purchase Plan (the "Plan"). If
the card is signed and returned but no option is checked, you will automatically
be enrolled in the Plan under Full Dividend Reinvestment.





           (continued and to be signed and dated on the reverse side)


[LOGO OF ATMOS ENERGY CORPORATION APPEARS HERE]     DIRECT STOCK PURCHASE PLAN

                         ENROLLMENT AUTHORIZATION FORM
                               This is not a Proxy
I hereby appoint BankBoston as my agent to receive any dividends that may
hereafter become payable to me on my shares of Atmos Energy Corporation common
stock and to apply such dividends and any Voluntary Cash Investments made by me
to the purchase of full and fractional shares of Atmos Energy Corporation common
stock.

<TABLE>
<CAPTION>
<S>                                       <C>                                              <C>
     Check One Box Only.
[_]  Full Dividend Reinvestment.          [_] Partial Dividend Reinvestment.               [_]  Voluntary Cash Only.
     I wish to reinvest all dividends for     I wish to receive cash dividends on               I wish to make Voluntary
     this account.                            ____________ shares sent to me and to reinvest    Cash Investments, and
                                              cash dividends on the rest of my shares.          understand that subsequent
     I may also make Voluntary Cash                                                             dividends paid on shares
     Investments.                             I may also make Voluntary Cash                    acquired through the Plan
                                              Investments.                                      will automatically be
                                                                                                reinvested.
</TABLE>

I wish to make a Voluntary Cash Investment of $___________ (at least $25 but no
more than $100,000 per calendar year). My check made payable to BankBoston is
enclosed.


If shares are held jointly, all owners must sign. -----------------  ----------
                                                  Signature          Date

                                                  -----------------  ----------
                                                  Signature          Date

<PAGE>

                                                                    Exhibit 99.3

[LOGO OF ATMOS ENERGY CORPORATION APPEARS HERE]

Electronic Deposit of Dividends Enrollment Form


- -----------------------------------------------------------
Signature (sign as name appears below)

- -----------------------------------------------------------
Signature (if shares held jointly, both owners must sign)

- -----------------------------------------------------------
Social Security Number                         Date





Note: This enrollment form must be received by BankBoston at least 45 days prior
to the dividend payment date; otherwise, a dividend check will be mailed to you.
This service will continue until written notice to cancel is received by
BankBoston.




If you would like to sign up for Electronic Deposit of Dividends, complete this
form. Return it to our agent, BankBoston, with a voided check or a deposit slip
that shows your bank account number.

- -----------------------------------------------------------
Name of your bank

- -----------------------------------------------------------
Address of your bank

- -----------------------------------------------------------
City                        State               Zip Code

- -----------------------------------------------------------
Bank account number

- -----------------------------------------------------------
Your bank's ABA Transit Routing Number (contact your bank
for this information)
                    Account Type:

            [_] Checking   [_] Savings

Written correspondence should be directed to:
EquiServe L.P.
P.O. Box 8040
Boston, MA 02266-8040




Now you can have your cash dividends deposited directly into your personal bank
account. With this Electronic Deposit service, you tell us where to deposit your
dividend and we make the deposit for you. This service is provided to you at no
charge. Compare the benefits of Electronic Deposit to conventional mail
delivery:

        *  It's Convenient. Your dividend is automatically credited to your
           personal bank account each quarter, even when you're out of town.

        *  It's Dependable. Your bank account is credited on the date the
           dividend is paid. You are assured immediate access to your dividend
           on the payable date because you don't have to wait for your check in
           the mail.

        *  It's Safe. You eliminate the possibility of your check being lost,
           stolen or destroyed.

To take advantage of this service, just complete the reverse side of this
enrollment form. Attach a voided check or a deposit slip that shows your bank
account number. Please note that it is essential that you furnish your bank's
ABA Transit Routing Number, where requested, in order to enroll. Mail this form
and your attachment to BankBoston in the envelope provided. Telephone inquiries
call: 1-800-543-3038.

<PAGE>

                                                                    Exhibit 99.6

<TABLE>
<CAPTION>

                                      ELECTRONIC MONTHLY INVESTMENT FORM
                                     INSTRUCTIONS FOR REVERSE SIDE OF FORM
<S>                          <C> <C>
 [LOGO OF ATMOS APPEARS HERE]
 ATMOS ENERGY CORPORATION    1.  Indicate Type of Account, Checking or Savings.
 DIRECT STOCK PURCHASE PLAN
Return your completed        2.  Indicate complete Account Number.
 Electronic Monthly
 Investment Form to:         3.  Please fill out the "Name on Account" as it
                                 appears on your account.

ATMOS ENERGY CORPORATION     4.  Please fill out the complete name of your
c/o EquiServe L.P.               financial institution including the branch name
Dividend Reinvestment            and address.
P.O. Box 8040
Boston, MA 02266-8040        5.  Please fill out the Transit/Routing Number
                                 (Bank Number) from your checking or savings
                                 deposit slip.

                             6.  Amount of Electronic Monthly Investment:
                                 Indicate the monthly amount authorized to
                                 transfer from your account to purchase Atmos
                                 Energy Corporation stock. ($25.00 monthly
                                 minimum).

                             7.  Please have an authorized representative
                                 complete the Financial Institution
                                 Certification section.
</TABLE>
                             Please call BankBoston at 1-800-543-3038 with
                             any questions.

I hereby authorize BankBoston, Signature:
N.A., as agent to make monthly           ---------------------------------------
electronic transfers of        Signature:
funds from my savings/                   ---------------------------------------
checking account in the                                Phone
amount stated on the reverse Date:                    Number:
of this form. These monthly       --------------------       -------------------
deductions will be used to
purchase shares of Atmos
Energy Corporation Common
Stock for deposit into my
Atmos Energy account.

Please Print All Items

1. Type of Account  [_] Checking    [_] Savings    2.
                                                     ---------------------------
                                                      Bank Account Number

       3.
          -----------------------------------
          Name on Account

       4.                                       5.
          -----------------------------------     ------------------------------
          Financial institution                   Transit/Routing Number
                                                  (ABA#)

          -----------------------------------
          Branch Street Address
                                                6. $
          -----------------------------------       ----------------------------
          Branch City, State and Zip Code           Amount of Monthly
                                                    Deduction ($25 minimum)

Important: Enclose a voided check (if a         7.  Financial Institution
checking account) or deposit slip                   Certification
(if a savings account) for account and              ---------------------
routing  number verification.                       I confirm the identity of
Your  completed Electronic Monthly Investment       the above-mentioned payee(s)
Form must be received by the Agent on or            and the account number and
before the 25th of the month to be included         title. This stands to
in the following month's transactions.              authorize that the financial
                                                    institution agrees to
                                                    receive and to deposit the
                                                    payment named.

(Note: Deductions will occur one banking day        ---------------------------
prior to the Investment Date of each month.)        Print Representative's name

                                                    ---------------------------
                                                    Representative's Signature


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