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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-02-27	Common Stock	A	5237	—	Acquired	134933	Direct

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: Includes 34 shares acquired under the Company's employee stock purchase plan in November 2016.