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

Mar 1, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMERICAN TOWER CORP /MA/ (AMT)
CIK: 0001053507
Period of Report: 2017-02-27

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-02-27	Common Stock	A	13582	—	Acquired	255169	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1420	Indirect
Common Stock	59817	Indirect

Footnotes

F1: Reflects the number of performance stock units ("PSUs") earned, as a result of the Compensation Committee's certification to the achievement of performance, under the terms of a PSU award granted on March 10, 2015. These shares will vest at the end of the three-year performance period, and each PSU represents a contingent right to receive one share of Common Stock.

F2: The reporting person disclaims beneficial ownership in shares held by children.