AMT

insider transactions

AMERICAN TOWER CORP /MA/ — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Net shares · 365d

-113.1K

2.7K buy · 115.8K sell

Net value · 365d

-$21.5M

$494.9K in · $22.0M out

Sentiment · 365d

Net selling

2% buying · 98% selling

Open-market trades · 365d

2.7K buy · 115.8K sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Other·F
Jun 1, 26

Robert Joseph Meyer KEY

SVP & Advisor to the CFO

$28.7K

153 sh · $187.53

Own -1%
Other·G
May 28, 26

Pamela D A Reeve

Director

$0

810 sh

Own -4%
Sell·S
Apr 29, 26

Ruth T Dowling

EVP, Chief Admin Ofr, GC & Sec · 10b5-1

$73.9K

416 sh · $177.54

Own -1%
Sell·S
Apr 28, 26

Ruth T Dowling

EVP, Chief Admin Ofr, GC & Sec · 10b5-1

$99.2K

556 sh · $178.48

Own -2%
Other·F
Mar 11, 26

Richard C Rossi KEY

EVP & President, U.S. Tower

$125.1K

684 sh · $182.85

Own -4%
Other·F
Mar 11, 26

Juan Font KEY

SVP, Pres. & CEO, CoreSite

$169.7K

928 sh · $182.85

Own -3%
Other·F
Mar 11, 26

Rodney M Smith KEY

EVP, CFO & Treasurer

$236.8K

1.3K sh · $182.85

Own -1%
Other·F
Mar 11, 26

Robert Joseph Meyer

SVP & Chief Accounting Officer

$125.1K

684 sh · $182.85

Own -3%
Other·F
Mar 11, 26

Ruth T Dowling

EVP, Chief Admin Ofr, GC & Sec

$157.8K

863 sh · $182.85

Own -3%
Other·F
Mar 11, 26

Eugene M Noel

EVP & Chief Operating Officer

$131.5K

719 sh · $182.85

Own -2%
Other·F
Mar 11, 26

Steven O Vondran KEY

President and CEO

$394.6K

2.2K sh · $182.85

Own -2%
Other·F
Mar 10, 26

Richard C Rossi KEY

EVP & President, U.S. Tower

$287.4K

1.5K sh · $186.12

Own -8%
Grant·A
Mar 10, 26

Richard C Rossi KEY

EVP & President, U.S. Tower

$0

6.4K sh

Own +48%
Other·F
Mar 10, 26

Juan Font KEY

SVP, Pres. & CEO, CoreSite

$341.3K

1.8K sh · $186.12

Own -6%
Grant·A
Mar 10, 26

Juan Font KEY

SVP, Pres. & CEO, CoreSite

$0

8.1K sh

Own +35%
Other·F
Mar 10, 26

Rodney M Smith KEY

EVP, CFO & Treasurer

$2.3M

12.4K sh · $186.12

Own -12%
Grant·A
Mar 10, 26

Rodney M Smith KEY

EVP, CFO & Treasurer

$0

10.5K sh

Own +11%
Other·F
Mar 10, 26

Robert Joseph Meyer

SVP & Chief Accounting Officer

$254.6K

1.4K sh · $186.12

Own -5%
Grant·A
Mar 10, 26

Robert Joseph Meyer

SVP & Chief Accounting Officer

$0

4.0K sh

Own +16%
Other·F
Mar 10, 26

Ruth T Dowling

EVP, Chief Admin Ofr, GC & Sec

$1.2M

6.6K sh · $186.12

Own -17%
Grant·A
Mar 10, 26

Ruth T Dowling

EVP, Chief Admin Ofr, GC & Sec

$0

6.9K sh

Own +22%
Other·F
Mar 10, 26

Eugene M Noel

EVP & Chief Operating Officer

$464.9K

2.5K sh · $186.12

Own -7%
Grant·A
Mar 10, 26

Eugene M Noel

EVP & Chief Operating Officer

$0

8.2K sh

Own +28%
Other·F
Mar 10, 26

Steven O Vondran KEY

President and CEO

$2.8M

15.3K sh · $186.12

Own -12%
Grant·A
Mar 10, 26

Steven O Vondran KEY

President and CEO

$0

21.0K sh

Own +20%
Grant·A
Mar 10, 26

Kelly C Chambliss

Director

$0

1.2K sh

Own +38%
Grant·A
Mar 10, 26

Craig Macnab

Director

$0

1.2K sh

Own +9%
Buy·P
Mar 10, 26

Rajesh Kalathur

Director

$494.9K

2.7K sh · $185.30

Own +118%
Grant·A
Mar 10, 26

Rajesh Kalathur

Director

$0

1.2K sh

Own +114%
Grant·A
Mar 10, 26

Robert D Hormats

Director

$0

1.2K sh

Own +14%
Grant·A
Mar 10, 26

Teresa Hillary Clarke

Director

$0

1.2K sh

Own +30%
Grant·A
Mar 10, 26

Pamela D A Reeve

Director

$0

1.2K sh

Own +6%
Grant·A
Mar 10, 26

Neville R Ray

Director

$0

1.2K sh

Own +114%
Grant·A
Mar 10, 26

Eugene F Reilly

Director

$0

1.2K sh

Own +21%
Grant·A
Mar 10, 26

Bruce L Tanner

Director

$0

1.2K sh

Own +21%
Grant·A
Mar 10, 26

Grace Lieblein

Director

$0

1.2K sh

Own +15%
Grant·A
Mar 10, 26

Kenneth R Frank

Director

$0

1.2K sh

Own +24%
Exercise·M
Mar 4, 26

Steven O Vondran KEY

President and CEO · 10b5-1

$0

33.5K sh

Own New
Sell·S
Mar 4, 26

Steven O Vondran KEY

President and CEO · 10b5-1

$336.6K

1.8K sh · $189.82

Own -2%
Sell·S
Mar 4, 26

Steven O Vondran KEY

President and CEO · 10b5-1

$3.1M

16.6K sh · $188.82

Own -13%
Sell·S
Mar 4, 26

Steven O Vondran KEY

President and CEO · 10b5-1

$2.8M

15.1K sh · $187.90

Own -11%
Exercise·M
Mar 4, 26

Steven O Vondran KEY

President and CEO · 10b5-1

$3.2M

33.5K sh · $94.71

Own +32%
Sell·S
Mar 4, 26

Ruth T Dowling

EVP, Chief Admin Ofr, GC & Sec · 10b5-1

$128.6K

682 sh · $188.51

Own -2%
Exercise·M
Mar 2, 26

Eugene M Noel

EVP & Chief Operating Officer · 10b5-1

$0

41.2K sh

Own New
Sell·S
Mar 2, 26

Eugene M Noel

EVP & Chief Operating Officer · 10b5-1

$1.3M

7.0K sh · $192.03

Own -19%
Sell·S
Mar 2, 26

Eugene M Noel

EVP & Chief Operating Officer · 10b5-1

$4.1M

21.6K sh · $191.40

Own -37%
Sell·S
Mar 2, 26

Eugene M Noel

EVP & Chief Operating Officer · 10b5-1

$1.4M

7.4K sh · $190.29

Own -11%
Sell·S
Mar 2, 26

Eugene M Noel

EVP & Chief Operating Officer · 10b5-1

$992.6K

5.2K sh · $189.36

Own -7%
Exercise·M
Mar 2, 26

Eugene M Noel

EVP & Chief Operating Officer · 10b5-1

$3.9M

41.2K sh · $94.71

Own +139%
Sell·S
Feb 27, 26

Ruth T Dowling

EVP, Chief Admin Ofr, GC & Sec · 10b5-1

$122.1K

656 sh · $186.16

Own -2%
Sell·S
Feb 27, 26

Robert Joseph Meyer

SVP & Chief Accounting Officer

$831.7K

4.5K sh · $186.73

Own -15%
Grant·A
Feb 25, 26

Ruth T Dowling

EVP, Chief Admin Ofr, GC & Sec

$0

11.1K sh

Own +52%
Grant·A
Feb 25, 26

Rodney M Smith KEY

EVP, CFO & Treasurer

$0

21.4K sh

Own +29%
Grant·A
Feb 25, 26

Steven O Vondran KEY

President and CEO

$0

24.6K sh

Own +30%
Exercise·M
Feb 17, 26

Rodney M Smith KEY

EVP, CFO & Treasurer · 10b5-1

$0

34.3K sh

Own New
Sell·S
Feb 17, 26

Rodney M Smith KEY

EVP, CFO & Treasurer · 10b5-1

$193

1 sh · $193.13

Own -0%
Sell·S
Feb 17, 26

Rodney M Smith KEY

EVP, CFO & Treasurer · 10b5-1

$4.4M

22.7K sh · $192.49

Own -23%
Sell·S
Feb 17, 26

Rodney M Smith KEY

EVP, CFO & Treasurer · 10b5-1

$1.8M

9.6K sh · $191.52

Own -9%
Sell·S
Feb 17, 26

Rodney M Smith KEY

EVP, CFO & Treasurer · 10b5-1

$397.1K

2.1K sh · $190.35

Own -2%
Exercise·M
Feb 17, 26

Rodney M Smith KEY

EVP, CFO & Treasurer · 10b5-1

$3.3M

34.3K sh · $94.71

Own +46%
Other·F
Jan 3, 26

Juan Font KEY

SVP, Pres. & CEO, CoreSite

$73.2K

419 sh · $174.80

Own -2%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Jun 1, 2026	Robert Joseph Meyer KEY	SVP & Advisor to the CFO	Other F	153	-1%	$187.53	$28.7K
May 28, 2026	Pamela D A Reeve	Director	Other G	810	-4%	—	$0
Apr 29, 2026	Ruth T Dowling 10b5-1	EVP, Chief Admin Ofr, GC & Sec	Sell S	416	-1%	$177.54	$73.9K
Apr 28, 2026	Ruth T Dowling 10b5-1	EVP, Chief Admin Ofr, GC & Sec	Sell S	556	-2%	$178.48	$99.2K
Mar 11, 2026	Richard C Rossi KEY	EVP & President, U.S. Tower	Other F	684	-4%	$182.85	$125.1K
Mar 11, 2026	Juan Font KEY	SVP, Pres. & CEO, CoreSite	Other F	928	-3%	$182.85	$169.7K
Mar 11, 2026	Rodney M Smith KEY	EVP, CFO & Treasurer	Other F	1.3K	-1%	$182.85	$236.8K
Mar 11, 2026	Robert Joseph Meyer	SVP & Chief Accounting Officer	Other F	684	-3%	$182.85	$125.1K
Mar 11, 2026	Ruth T Dowling	EVP, Chief Admin Ofr, GC & Sec	Other F	863	-3%	$182.85	$157.8K
Mar 11, 2026	Eugene M Noel	EVP & Chief Operating Officer	Other F	719	-2%	$182.85	$131.5K
Mar 11, 2026	Steven O Vondran KEY	President and CEO	Other F	2.2K	-2%	$182.85	$394.6K
Mar 10, 2026	Richard C Rossi KEY	EVP & President, U.S. Tower	Other F	1.5K	-8%	$186.12	$287.4K
Mar 10, 2026	Richard C Rossi KEY	EVP & President, U.S. Tower	Grant A	6.4K	+48%	—	$0
Mar 10, 2026	Juan Font KEY	SVP, Pres. & CEO, CoreSite	Other F	1.8K	-6%	$186.12	$341.3K
Mar 10, 2026	Juan Font KEY	SVP, Pres. & CEO, CoreSite	Grant A	8.1K	+35%	—	$0
Mar 10, 2026	Rodney M Smith KEY	EVP, CFO & Treasurer	Other F	12.4K	-12%	$186.12	$2.3M
Mar 10, 2026	Rodney M Smith KEY	EVP, CFO & Treasurer	Grant A	10.5K	+11%	—	$0
Mar 10, 2026	Robert Joseph Meyer	SVP & Chief Accounting Officer	Other F	1.4K	-5%	$186.12	$254.6K
Mar 10, 2026	Robert Joseph Meyer	SVP & Chief Accounting Officer	Grant A	4.0K	+16%	—	$0
Mar 10, 2026	Ruth T Dowling	EVP, Chief Admin Ofr, GC & Sec	Other F	6.6K	-17%	$186.12	$1.2M
Mar 10, 2026	Ruth T Dowling	EVP, Chief Admin Ofr, GC & Sec	Grant A	6.9K	+22%	—	$0
Mar 10, 2026	Eugene M Noel	EVP & Chief Operating Officer	Other F	2.5K	-7%	$186.12	$464.9K
Mar 10, 2026	Eugene M Noel	EVP & Chief Operating Officer	Grant A	8.2K	+28%	—	$0
Mar 10, 2026	Steven O Vondran KEY	President and CEO	Other F	15.3K	-12%	$186.12	$2.8M
Mar 10, 2026	Steven O Vondran KEY	President and CEO	Grant A	21.0K	+20%	—	$0
Mar 10, 2026	Kelly C Chambliss	Director	Grant A	1.2K	+38%	—	$0
Mar 10, 2026	Craig Macnab	Director	Grant A	1.2K	+9%	—	$0
Mar 10, 2026	Rajesh Kalathur	Director	Buy P	2.7K	+118%	$185.30	$494.9K
Mar 10, 2026	Rajesh Kalathur	Director	Grant A	1.2K	+114%	—	$0
Mar 10, 2026	Robert D Hormats	Director	Grant A	1.2K	+14%	—	$0
Mar 10, 2026	Teresa Hillary Clarke	Director	Grant A	1.2K	+30%	—	$0
Mar 10, 2026	Pamela D A Reeve	Director	Grant A	1.2K	+6%	—	$0
Mar 10, 2026	Neville R Ray	Director	Grant A	1.2K	+114%	—	$0
Mar 10, 2026	Eugene F Reilly	Director	Grant A	1.2K	+21%	—	$0
Mar 10, 2026	Bruce L Tanner	Director	Grant A	1.2K	+21%	—	$0
Mar 10, 2026	Grace Lieblein	Director	Grant A	1.2K	+15%	—	$0
Mar 10, 2026	Kenneth R Frank	Director	Grant A	1.2K	+24%	—	$0
Mar 4, 2026	Steven O Vondran KEY 10b5-1	President and CEO	Exercise M	33.5K	New	—	$0
Mar 4, 2026	Steven O Vondran KEY 10b5-1	President and CEO	Sell S	1.8K	-2%	$189.82	$336.6K
Mar 4, 2026	Steven O Vondran KEY 10b5-1	President and CEO	Sell S	16.6K	-13%	$188.82	$3.1M
Mar 4, 2026	Steven O Vondran KEY 10b5-1	President and CEO	Sell S	15.1K	-11%	$187.90	$2.8M
Mar 4, 2026	Steven O Vondran KEY 10b5-1	President and CEO	Exercise M	33.5K	+32%	$94.71	$3.2M
Mar 4, 2026	Ruth T Dowling 10b5-1	EVP, Chief Admin Ofr, GC & Sec	Sell S	682	-2%	$188.51	$128.6K
Mar 2, 2026	Eugene M Noel 10b5-1	EVP & Chief Operating Officer	Exercise M	41.2K	New	—	$0
Mar 2, 2026	Eugene M Noel 10b5-1	EVP & Chief Operating Officer	Sell S	7.0K	-19%	$192.03	$1.3M
Mar 2, 2026	Eugene M Noel 10b5-1	EVP & Chief Operating Officer	Sell S	21.6K	-37%	$191.40	$4.1M
Mar 2, 2026	Eugene M Noel 10b5-1	EVP & Chief Operating Officer	Sell S	7.4K	-11%	$190.29	$1.4M
Mar 2, 2026	Eugene M Noel 10b5-1	EVP & Chief Operating Officer	Sell S	5.2K	-7%	$189.36	$992.6K
Mar 2, 2026	Eugene M Noel 10b5-1	EVP & Chief Operating Officer	Exercise M	41.2K	+139%	$94.71	$3.9M
Feb 27, 2026	Ruth T Dowling 10b5-1	EVP, Chief Admin Ofr, GC & Sec	Sell S	656	-2%	$186.16	$122.1K
Feb 27, 2026	Robert Joseph Meyer	SVP & Chief Accounting Officer	Sell S	4.5K	-15%	$186.73	$831.7K
Feb 25, 2026	Ruth T Dowling	EVP, Chief Admin Ofr, GC & Sec	Grant A	11.1K	+52%	—	$0
Feb 25, 2026	Rodney M Smith KEY	EVP, CFO & Treasurer	Grant A	21.4K	+29%	—	$0
Feb 25, 2026	Steven O Vondran KEY	President and CEO	Grant A	24.6K	+30%	—	$0
Feb 17, 2026	Rodney M Smith KEY 10b5-1	EVP, CFO & Treasurer	Exercise M	34.3K	New	—	$0
Feb 17, 2026	Rodney M Smith KEY 10b5-1	EVP, CFO & Treasurer	Sell S	1	-0%	$193.13	$193
Feb 17, 2026	Rodney M Smith KEY 10b5-1	EVP, CFO & Treasurer	Sell S	22.7K	-23%	$192.49	$4.4M
Feb 17, 2026	Rodney M Smith KEY 10b5-1	EVP, CFO & Treasurer	Sell S	9.6K	-9%	$191.52	$1.8M
Feb 17, 2026	Rodney M Smith KEY 10b5-1	EVP, CFO & Treasurer	Sell S	2.1K	-2%	$190.35	$397.1K
Feb 17, 2026	Rodney M Smith KEY 10b5-1	EVP, CFO & Treasurer	Exercise M	34.3K	+46%	$94.71	$3.3M
Jan 3, 2026	Juan Font KEY	SVP, Pres. & CEO, CoreSite	Other F	419	-2%	$174.80	$73.2K

About AMT insider trading

This page tracks insider transactions for AMERICAN TOWER CORP /MA/ (AMT) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.