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

Jul 15, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMERICAN TOWER CORP /MA/ (AMT)
CIK: 0001053507
Period of Report: 2016-07-14

Reporting Person: DiSanto Edmund (EVP, Chief Admin Ofr, GC & Sec)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-07-14	Common Stock	M	11087	$28.39	Acquired	140749	Direct
2016-07-14	Common Stock	S	11087	$116.71	Disposed	129662	Direct
2016-07-14	Common Stock	M	10000	$43.11	Acquired	139662	Direct
2016-07-14	Common Stock	S	10000	$116.71	Disposed	129662	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-07-14	Option to Purchase Common Stock	$28.39	M	11087	Disposed	2019-03-10	Common Stock (11087)	Direct
2016-07-14	Option to Purchase Common Stock	$43.11	M	10000	Disposed	2020-03-10	Common Stock (10000)	Direct

Footnotes

F1: The sales reported on this Form 4 were pursuant to a 10b5-1 trading plan adopted by the reporting person on May 27, 2016.

F2: This option was granted pursuant to the 2007 Equity Incentive Plan and is exercisable in 25% cumulative annual increments beginning March 10, 2010.

F3: This option was granted pursuant to the 2007 Equity Incentive Plan and is exercisable in 25% cumulative annual increments beginning March 10, 2011.