AMERICAN TOWER CORP /MA/ — Director's Dealing 2016

Mar 2, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMERICAN TOWER CORP /MA/ (AMT)
CIK: 0001053507
Period of Report: 2016-02-29

Reporting Person: THOMPSON SAMME L (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-02-29	Common Stock	M	10000	$31.50	Acquired	28111	Direct
2016-02-29	Common Stock	S	10000	$90.43	Disposed	18111	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-02-29	Option to Purchase Common Stock	$31.50	M	10000	Disposed	2016-03-01	Common Stock (10000)	Direct

Footnotes

F1: Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $90.40 to $90.53 per share.

F2: This option was granted pursuant to the 1997 Stock Option Plan, as amended.