Teresa Hillary Clarke

CIK: 0001875332

Transaction Breakdown

Open Market Buys (P)15 (78.9%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (21.1%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

AMT

AMERICAN TOWER CORP /MA/

Director

AJG

Arthur J. Gallagher & Co.

Director

Discretionary Trading P&L

Holdings

Transaction History (19 total)

AMT
AMERICAN TOWER CORP /MA/
Oct 20, 2026
Purchase(P)
Direct
43 shares at avg. $183.20$8K
AMT
AMERICAN TOWER CORP /MA/
Jul 13, 2026
Purchase(P)
Direct
46 shares at avg. $167.52$8K
AJG
Arthur J. Gallagher & Co.
May 12, 2026
Award(A)
Direct
1.1K shares-
AMT
AMERICAN TOWER CORP /MA/
Apr 28, 2026
Purchase(P)
Direct
44 shares at avg. $177.08$8K
AMT
AMERICAN TOWER CORP /MA/
Mar 10, 2026
Award(A)
Direct
1.2K shares-
AMT
AMERICAN TOWER CORP /MA/
Feb 2, 2026
Purchase(P)
Direct
31 shares at avg. $178.04$5K
AMT
AMERICAN TOWER CORP /MA/
Oct 20, 2025
Purchase(P)
Direct
29 shares at avg. $189.12$5K
AMT
AMERICAN TOWER CORP /MA/
Jul 11, 2025
Purchase(P)
Direct
24 shares at avg. $223.23$5K
AJG
Arthur J. Gallagher & Co.
May 13, 2025
Award(A)
Direct
690 shares-
AMT
AMERICAN TOWER CORP /MA/
Apr 28, 2025
Purchase(P)
Direct
25 shares at avg. $209.33$5K
AMT
AMERICAN TOWER CORP /MA/
Mar 10, 2025
Award(A)
Direct
1.1K shares-
AMT
AMERICAN TOWER CORP /MA/
Feb 3, 2025
Purchase(P)
Direct
18 shares at avg. $187.27$3K
AMT
AMERICAN TOWER CORP /MA/
Oct 25, 2024
Purchase(P)
Direct
14 shares at avg. $227.42$3K
AMT
AMERICAN TOWER CORP /MA/
Jul 12, 2024
Purchase(P)
Direct
16 shares at avg. $204.28$3K
AMT
AMERICAN TOWER CORP /MA/
Apr 26, 2024
Purchase(P)
Direct
19 shares at avg. $172.82$3K
AMT
AMERICAN TOWER CORP /MA/
Feb 1, 2024
Purchase(P)
Direct
8 shares at avg. $199.95$2K
AMT
AMERICAN TOWER CORP /MA/
Oct 27, 2023
Purchase(P)
Direct
8 shares at avg. $171.52$1K
AMT
AMERICAN TOWER CORP /MA/
Jul 10, 2023
Purchase(P)
Direct
7 shares at avg. $193.78$1K
AMT
AMERICAN TOWER CORP /MA/
Apr 28, 2023
Purchase(P)
Direct
7 shares at avg. $205.93$1K

		Type	Shares	Price		Ownership
Oct 20, 2026	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	43	$183.20	$7,864	Direct
Jul 13, 2026	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	46	$167.52	$7,781	Direct
May 12, 2026	AJG Arthur J. Gallagher & Co.	Award(A)	1,110	-	$0	Direct
Apr 28, 2026	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	44	$177.08	$7,703	Direct
Mar 10, 2026	AMT AMERICAN TOWER CORP /MA/	Award(A)	1,209	-	$0	Direct
Feb 2, 2026	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	31	$178.04	$5,468	Direct
Oct 20, 2025	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	29	$189.12	$5,420	Direct
Jul 11, 2025	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	24	$223.23	$5,379	Direct
May 13, 2025	AJG Arthur J. Gallagher & Co.	Award(A)	690	-	-	Direct
Apr 28, 2025	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	25	$209.33	$5,335	Direct
Mar 10, 2025	AMT AMERICAN TOWER CORP /MA/	Award(A)	1,056	-	-	Direct
Feb 3, 2025	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	18	$187.27	$3,292	Direct
Oct 25, 2024	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	14	$227.42	$3,268	Direct
Jul 12, 2024	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	16	$204.28	$3,243	Direct
Apr 26, 2024	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	19	$172.82	$3,212	Direct
Feb 1, 2024	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	8	$199.95	$1,536	Direct
Oct 27, 2023	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	8	$171.52	$1,450	Direct
Jul 10, 2023	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	7	$193.78	$1,394	Direct
Apr 28, 2023	AMT AMERICAN TOWER CORP /MA/	Purchase(P)	7	$205.93	$1,374	Direct

1-19 of 19 transactions

About Clarke Teresa Hillary

Clarke Teresa Hillary (SEC CIK 0001875332) files insider reports with the SEC as Director of AMERICAN TOWER CORP /MA/ (AMT) and Director of Arthur J. Gallagher & Co. (AJG).

Signal8 holds 5 ownership filings by Clarke Teresa Hillary, all Form 4s, filed between Mar 12, 2025 and Oct 22, 2026. Those filings report 19 transactions, from Apr 28, 2023 to Oct 20, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Clarke Teresa Hillary's filings is in BOSTON, MA.

Recent filings by Clarke Teresa Hillary

Oct 20, 2026: Open-market purchase of AMT shares (Form 4, code P).
Jul 13, 2026: Open-market purchase of AMT shares (Form 4, code P).
May 12, 2026: Grant or award of AJG shares (Form 4, code A).
Apr 28, 2026: Open-market purchase of AMT shares (Form 4, code P).
Mar 10, 2026: Grant or award of AMT shares (Form 4, code A).

Other insiders filing for AMERICAN TOWER CORP /MA/ (AMT)

Dowling Ruth T, EVP, Chief Admin Ofr, GC & Sec
Blanchett Paul, SVP & Chief Accounting Officer
Ludgate Kristen M, Director
Kalathur Rajesh, Director
Meyer Robert Joseph, SVP & Advisor to the CFO
REEVE PAMELA D A, Director

How to read Form 4 transaction codes