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

Mar 14, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMERICAN TOWER CORP /MA/ (AMT)
CIK: 0001053507
Period of Report: 2016-03-10

Reporting Person: Meyer Robert Joseph JR (SVP, Finance & Corp Controller)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-03-10	Common Stock	A	3960	—	Acquired	25652	Direct
2016-03-10	Common Stock	F	636	$94.71	Disposed	25016	Direct
2016-03-11	Common Stock	F	396	$98.46	Disposed	24620	Direct
2016-03-12	Common Stock	F	321	$98.46	Disposed	24299	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-03-10	Option to Purchase Common Stock	$94.71	A	25756	Acquired	2026-03-10	Common Stock (25756)	Direct

Footnotes

F1: These Restricted Stock Units (RSUs) were granted pursuant to the 2007 Equity Incentive Plan and vest in 25% cumulative annual increments beginning March 10, 2017. Each RSU respresents a contingent right to receive one share of Common Stock.

F2: Amount includes 200 and 46 shares acquired under the Company's employee stock purchase plan in May 2015 and November 2015, respectively, and excludes 1,109 shares inadvertently included in his previous Form 4.

F3: Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the 2007 Equity Incentive Plan.

F4: This option was granted pursuant to the 2007 Equity Incentive Plan and is exercisable in 25% cumulative annual increments beginning March 10, 2017.