AMERICAN TOWER CORP /MA/ — Director's Dealing 2021

Feb 9, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMERICAN TOWER CORP /MA/ (AMT)
CIK: 0001053507
Period of Report: 2021-02-05

Reporting Person: THOMPSON SAMME L (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-02-05	Common Stock	M	1653	$50.78	Acquired	21990	Direct
2021-02-05	Common Stock	S	1653	$232.64	Disposed	20337	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-05	Option to Purchase Common Stock	$50.78	M	1653	Disposed	2021-03-10	Common Stock (1653)	Direct

Footnotes

F1: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 9, 2020.

F2: This option was granted pursuant to the 2007 Equity Incentive Plan, as amended.