AMERICAN TOWER CORP /MA/ — Director's Dealing 2011

Apr 5, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMERICAN TOWER CORP /MA/ (AMT)
CIK: 0001053507
Period of Report: 2011-02-01

Reporting Person: TAICLET JAMES D JR (Director, Chairman, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-01	Class A Common Stock	G	4885	—	Disposed	44300	Direct
2011-04-01	Class A Common Stock	G	4825	—	Disposed	39475	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	1000	Indirect

Footnotes

F1: Gift of Class A Common Stock to charitable organization.

F2: The amount of securities reported as beneficially owned on the reporting person's Form 4s filed March 14, 2011 and March 21, 2011 does not reflect the gift of Class A Common Stock to a charitable organization on February 1, 2011.

F3: The reporting person disclaims beneficial ownership in shares owned by minor children.