SEC FORM 4 SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
 
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
HESS WILLIAM H

(Last) (First) (Middle)
116 HUNTINGTON AVENUE

(Street)
BOSTON MA 02116

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
AMERICAN TOWER CORP /MA/ [ AMT ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
EVP, General Counsel
3. Date of Earliest Transaction (Month/Day/Year)
02/27/2004
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. 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 of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Class A Common Stock 02/27/2004 S 7,600 D $11.1 3,400 I By 401(k)
Class A Common Stock 02/27/2004 S 3,400 D $11.2 0 I By 401(k)
Class A Common Stock 03/01/2004 M 25,000 A $1.55 25,150 D
Class A Common Stock 03/01/2004 S 25,000 D $11.1 150 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Option to purchase Class A Common Stock $1.55 03/01/2004 M 25,000 (1) 11/14/2012 Class A Common Stock 25,000 $0 75,000 D
Explanation of Responses:
1. This option was granted pursuant to the 1997 Stock Option Plan, as amended, and is exercisable in 25% cumulative annual increments beginning November 14, 2003.
Remarks:
William H. Hess 03/02/2004
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
POWER OF ATTORNEY



Know all by these presents, that the undersigned hereby makes, constitutes

and appoints Bradley E. Singer, acting individually, as the undersigned's

true and lawful attorney-in-fact with full power and authority as hereinafter

described to:



(1) execute for and on behalf of the undersigned, in the undersigned's

capacity as an officer and/or director of American Tower Corporation (the

"Company"), Forms 3, 4, and 5 (including any amendments thereto) in

accordance with Section 16(a) of the Securities Exchange Act of 1934 and

the rules thereunder (the "Exchange Act");



(2) do and perform any and all acts for and on behalf of the undersigned

which may be necessary or desirable to prepare, complete and execute any

such Form 3, 4, or 5, prepare, complete and execute any amendment or

amendments thereto, and timely deliver and file such form with the United

States Securities and Exchange Commission and any stock exchange or similar

authority;



(3) seek or obtain, as the undersigned's representative and on the

undersigned's behalf, information regarding transactions in the Company's

securities from any third party, including brokers, employee benefit plan

administrators and trustees, and the undersigned hereby authorizes any such

person to release any such information to such attorney-in-fact and

approves and ratifies any such release of information; and



(4) take any other action of any type whatsoever in connection with the

foregoing which, in the opinion of such attorney-in-fact, may be of

benefit to, in the best interest of, or legally required by, the

undersigned, it being understood that the documents executed by such

attorney-in-fact on behalf of the undersigned pursuant to this Power

of Attorney shall be in such form and shall contain such terms and

conditions as such attorney-in-fact may approve in such attorney-in-fact's

discretion.



The undersigned hereby grants to each such attorney-in-fact full power

and authority to do and perform any and every act and thing whatsoever

requisite, necessary, or proper to be done in the exercise of any of the

rights and powers herein granted, as fully to all intents and purposes as

the undersigned might or could do if personally present, with full power of

substitution or revocation, hereby ratifying and confirming all that such

attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall

lawfully do or cause to be done by virtue of this power of attorney and the

rights and powers herein granted. The undersigned acknowledges that the

foregoing attorney-in-fact, in serving in such capacity at the request of

the undersigned, are not assuming nor relieving, nor is the Company assuming

nor relieving, any of the undersigned's responsibilities to comply with

Section 16 of the Exchange Act.



The undersigned acknowledges that neither the Company nor the foregoing

attorney-in-fact assume (i) any liability for the undersigned's

responsibility to comply with the requirement of the Exchange Act, (ii)

any liability of the undersigned for any failure to comply with such

requirements, or (iii) any obligation or liability of the undersigned for

profit disgorgement under Section 16(b) of the Exchange Act.



This Power of Attorney shall remain in full force and effect until the

undersigned is no longer required to file Forms 3, 4, and 5 with respect

to the undersigned's holdings of and transactions in securities issued by

the Company, unless earlier revoked by the undersigned in a signed writing

delivered to the foregoing attorney-in-fact.



IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be

executed as of this 13th day of February, 2003.



Signature:  /s/ William H. Hess



Print Name: William H. Hess