AMERICAN TOWER CORP /MA/ - Director's Dealing 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMERICAN TOWER CORP /MA/ (AMT)
CIK: 0001053507
Period of Report: 2014-03-18

Reporting Person: DOLAN RAYMOND P (Director)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-03-18	Common Stock	M	10000	$31.50	Acquired	19059	Direct
2014-03-18	Common Stock	S	10000	$82.00	Disposed	9059	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-03-18	Option to Purchase Common Stock	$31.50	M	10000	Disposed	2016-03-01	Common Stock (10000)	Direct

F1: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2: Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $82.00 to $82.03 per share.

F3: This option was granted pursuant to the 1997 Stock Option Plan, as amended, and was fully vested on March 1, 2006.