/------------------------------/
                                                /        OMB APPROVAL          /
                                                /------------------------------/
                                                / OMB Number:        3235-0287 /
                                                / Expires:  January 31, 2005   /
                                                / Estimated average burden     /
                                                / hours per response...... 0.5 /
                                                /------------------------------/
+--------+
| FORM 4 |                       U.S. SECURITIES AND EXCHANGE COMMISSION
+--------+                               WASHINGTON, D.C. 20549
[_] Check this box if
    no longer subject         STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP
    to Section 16.
    Form 4 or Form 5       Filed pursuant to Section 16(a) of the Securities
    obligations may           Exchange Act of 1934, Section 17(a) of the
    continue. See            Public Utility Holding Company Act of 1935 or
    Instruction 1(b).      Section 30(f) of the Investment Company Act of 1940

(Print or Type Responses)
--------------------------------------------------------------------------------
 1.  Name and Address of Reporting Person*

        Dodge                       Steven                        B.
     ---------------------------------------------------------------------------
        (Last)                      (First)                        (Middle)

        116 Huntington Avenue
     ---------------------------------------------------------------------------
        (Street)

        Boston                      Massachusetts                     02116
     ---------------------------------------------------------------------------
        (City)                      (State)                           (Zip)
--------------------------------------------------------------------------------
 2.  Issuer Name and Ticker or Trading Symbol

        American Tower Corporation (NYSE: AMT)
--------------------------------------------------------------------------------
 3.  I.R.S. Identification Number of Reporting Person, if an entity
     (Voluntary)


--------------------------------------------------------------------------------
 4.  Statement for Month/Year

        August 2002
--------------------------------------------------------------------------------
 5.  If Amendment, Date of Original (Month/Year)


--------------------------------------------------------------------------------
 6.  Relationship of Reporting Person to Issuer (Check all applicable)

     [X] Director                         [_] 10% Owner
     [X] Officer (give title below)       [_] Other (specify below)

        Chief Executive Officer and Chairman
--------------------------------------------------------------------------------
 7.  Individual or Joint/Group Filing (Check applicable line)

     [X] Form filed by One Reporting Person
     [_] Form filed by More than One Reporting Person
--------------------------------------------------------------------------------



================================================================================
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
================================================================================




1. Title           2.  Trans-      3. Trans-       4. Securities Acquired (A)      5. Amount of         6. Owner-    7.  Nature
   of                  action         action          or Disposed of (D)              Securities           ship          of In-
   Security            Date           Code            (Instr. 3, 4 and 5)             Beneficially         Form:         direct
   (Instr. 3)          (Month/        (Instr. 8)                                      Owned at             Direct        Bene-
                       Day/        ----------------------------------------------     End of               (D) or        ficial
                       Year)                                                          Month                Indirect      Owner-
                                   Code  V          Amount    (A) or      Price       (Instr. 3 and 4)     (I)           ship
                                                              (D)                                          (Instr. 4)    (Instr. 4)
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                              

Class A Common        8/20/02       P               31,000       A        $1.84
Stock (1)
-----------------------------------------------------------------------------------------------------------------------------------
Class A Common        8/20/02       P              169,000       A        $1.90         1,099,530 (2)          D
Stock (1)
-----------------------------------------------------------------------------------------------------------------------------------

                                                                                           37,227 (2)          I      By Trusts (3)
-----------------------------------------------------------------------------------------------------------------------------------

                                                                                            5,000 (2)          I      By Spouse (3)
-----------------------------------------------------------------------------------------------------------------------------------

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

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



Reminder: Report on a separate line for each class of securities beneficially
     owned directly or indirectly.

*    If this form is filed by more than one reporting person, see Instruction
     4(b)(v).

                                                                          (Over)
                                                                 SEC 1474 (3-99)


FORM 4 (continued)



==========================================================================================================================
  Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options,
                                              convertible securities)
==========================================================================================================================
                                                                                 
1. Title of Derivative          2. Conver-          3. Trans-          4. Trans-             5. Number of Deriv-
   Security (Instr. 3)             sion or             action             tion Code             atives Securities
                                   Exercise            Date               (Instr. 8)            Acquired (A) or
                                   Price of            (Month/                                  Disposed of (D)
                                   Derivative          Day/                                     (Instr. 3,4, and 5)
                                   Security            Year)
                                                                       ---------------------------------------------------
                                                                       Code    V                (A)    (D)
--------------------------------------------------------------------------------------------------------------------------

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

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

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





==========================================================================================================================
    Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants,
                              options, convertible securities) -- continued
==========================================================================================================================
                                                                                           
                6. Date Exer-     7. Title and Amount of      8. Price     9. Number        10. Owner-       11. Na-
                   cisable and       Underlying Securities       of           of Deriv-         ship             ture
                   Expiration        (Instr. 3 and 4)            Deriv-       ative             Form             of In-
                   Date                                          ative        Secur-            of De-           direct
                   (Month/Day/                                   Secur-       ities             rivative         Bene-
                   Year)                                         ity          Bene-             Secu-            ficial
                                                                 (Instr.      ficially          rity:            Owner-
                 ------------------------------------------       5)          Owned             Direct           ship
                   Date    Expira-   Title    Amount or                       at End            (D) or           (Instr.
                   Exer-   tion               Number of                       of                Indi-            4)
                   cisable Date               Shares                          Month             rect (I)
                                                                              (Instr. 4)        (Instr. 4)

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

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

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

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




Explanation of Responses:

(1)  This Form 4 is being filed to report Mr. Dodge's purchase of an aggregate
     of 200,000 shares of Class A Common Stock on the open market on August 20,
     2002. On August 20, 2002, Mr. Dodge also purchased on the open market an
     aggregate of $1,754,000 principal amount of the Company's 9 3/8% senior
     notes due 2009 for a purchase price of $580 per note, or an aggregate
     purchase price of $1,017,320.

(2)  The information set forth in column 5, "Amount of Securities Beneficially
     Owned at End of Month" includes information, as of August 20, 2002, only
     with respect to Mr. Dodge's beneficial ownership of Class A Common Stock.
     It does not include information about Mr. Dodge's beneficial ownership of
     shares of Class B Common Stock (which are convertible into Class A Common
     Stock on a one-for-one basis) and stock options to purchase Class A and
     Class B Common Stock because Mr. Dodge had no reportable transactions in
     these other classes of securities during the period for which this report
     is filed.

(3)  Mr. Dodge disclaims any beneficial ownership in shares owned by the trusts
     or his spouse.



**   Intentional misstatements or omissions of facts constitute Federal Criminal
     Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

/s/    Steven B. Dodge                                   August 22, 2002
---------------------------------------          -------------------------------


Note:  File three copies of this Form, one of which must be manually signed.
If space provided is insufficient, see Instruction 6 for procedure.

                                                                          Page 2
                                                                 SEC 1474 (3-99)