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

Mar 1, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMERICAN TOWER CORP /MA/ (AMT)
CIK: 0001053507
Period of Report: 2016-02-26

Reporting Person: HESS WILLIAM H (EVP, Int'l. Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-02-26	Common Stock	A	4617	—	Acquired	93250	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3840	Indirect

Footnotes

F1: Reflects the number of performance stock units ("PSUs") earned under the terms of a PSU award granted on March 10, 2015, as a result of the Compensation Committee's certification to the achievement of performance. 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: Includes 144 shares acquired under the Company's employee stock purchase plan in November 2015.