Edmund DiSanto - 02 Nov 2022 Form 4 Insider Report for AMERICAN TOWER CORP /MA/ (AMT)

Role: EVP, Chief Admin Ofr, GC & Sec
Signature: /s/ Marina A. Breed, as attorney-in-fact
Issuer symbol: AMT
Transactions as of: 02 Nov 2022
Net transactions value: -$4,560,631
Form type: 4
Filing time: 04 Nov 2022, 16:14:48 UTC
Previous filing: 15 Mar 2022
Next filing: 28 Feb 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMT	Common Stock	Options Exercise	$2,691,500	+35,000	+22%	$76.90	192,685	02 Nov 2022	Direct	F1
transaction	AMT	Common Stock	Sale	$560,639	-2,760	-1.4%	$203.13	189,925	02 Nov 2022	Direct	F2, F3
transaction	AMT	Common Stock	Sale	$717,482	-3,520	-1.9%	$203.83	186,405	02 Nov 2022	Direct	F2, F4
transaction	AMT	Common Stock	Sale	$382,511	-1,866	-1%	$204.99	184,539	02 Nov 2022	Direct	F2, F5
transaction	AMT	Common Stock	Sale	$299,803	-1,455	-0.79%	$206.05	183,084	02 Nov 2022	Direct	F2, F6
transaction	AMT	Common Stock	Sale	$1,806,446	-8,723	-4.8%	$207.09	174,361	02 Nov 2022	Direct	F2, F7
transaction	AMT	Common Stock	Sale	$1,565,629	-7,522	-4.3%	$208.14	166,839	02 Nov 2022	Direct	F2, F8
transaction	AMT	Common Stock	Sale	$1,050,677	-5,025	-3%	$209.09	161,814	02 Nov 2022	Direct	F2, F9
transaction	AMT	Common Stock	Sale	$602,586	-2,867	-1.8%	$210.18	158,947	02 Nov 2022	Direct	F2, F10
transaction	AMT	Common Stock	Sale	$266,358	-1,262	-0.79%	$211.06	157,685	02 Nov 2022	Direct	F2, F11
holding	AMT	Common Stock						44,973	02 Nov 2022	By trust	F12

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AMT	Option to Purchase Common Stock	Options Exercise	$0	-35,000	-100%	$0.000000^*	0	02 Nov 2022	Common Stock	35,000	$76.90	Direct	F13

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Includes 15 shares acquired under the issuer's employee stock purchase plan in May 2022.
F2	The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 23, 2022.
F3	Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $202.48 to $203.45 per share.
F4	Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $203.52 to $204.42 per share.
F5	Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $204.55 to $205.52 per share.
F6	Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $205.55 to $206.51 per share.
F7	Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $206.58 to $207.575 per share.
F8	Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $207.60 to $208.58 per share.
F9	Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $208.60 to $209.50 per share.
F10	Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $209.66 to $210.60 per share.
F11	Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $210.76 to $211.77 per share.
F12	The reporting person disclaims beneficial ownership in shares held by trust.
F13	This option was granted pursuant to the 2007 Equity Incentive Plan, as amended, and is exercisable in 25% cumulative annual increments beginning March 11, 2014.