AMERICAN TOWER CORP /MA/ — Director's Dealing 2017

Mar 6, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMERICAN TOWER CORP /MA/ (AMT)
CIK: 0001053507
Period of Report: 2017-03-02

Reporting Person: THOMPSON SAMME L (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-03-02	Common Stock	M	10000	$37.52	Acquired	26063	Direct
2017-03-02	Common Stock	S	10000	$113.76	Disposed	16063	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-03-02	Option to Purchase Common Stock	$37.52	M	10000	Disposed	2017-03-15	Common Stock (10000)	Direct

Footnotes

F1: Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $113.73 to $113.85 per share.

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