American Tower Corp (AMT) Insider Trading

Last 12 months

Insiders bought $2.04M and sold $23.2M on the open market.

93% of the selling was scheduled in advance under 10b5-1 plans. SVP & Advisor to the CFO Robert Joseph Meyer sold $894k on Jul 29, 19% of their stake, outside a plan.

Net open-market

−$21.2M

4 buys · 9 sales

Under a 10b5-1 plan

93%

of the value sold

Insiders who bought / sold

3 / 5

executives and directors

Last open-market buy

Oct 2026

Oct 20, 2026

Get an email when AMT's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 25, 2024 – Oct 20	Teresa Hillary Clarke Director	Bought 9 parts	274	$188.15 average	$52k	5.1%	Form 4
Aug 21	Rajesh Kalathur Director	Bought	2,829	$177.00	$501k	55%	Form 4
Jul 29	Robert Joseph Meyer SVP & Advisor to the CFO	SoldNo plan	5,000	$178.89	$894k	19%	Form 4
Jul 28 – 29	Ruth T Dowling EVP, Chief Admin Ofr, GC & Sec	Sold10b5-1 plan 2 parts	1,791	$172.89 average	$310k	6.1%	Form 4
Apr 28 – 29	Ruth T Dowling EVP, Chief Admin Ofr, GC & Sec	Sold10b5-1 plan 2 parts	972	$178.08 average	$173k	3.2%	Form 4
Mar 10	Rajesh Kalathur Director	Bought	2,671	$185.30	$495k	110%	Form 4
Mar 4	Steven O Vondran President and CEO	Sold10b5-1 plan 3 parts	33,482	$188.46 average	$6.31M	24%	Form 4
Mar 4	Ruth T Dowling EVP, Chief Admin Ofr, GC & Sec	Sold10b5-1 plan	682	$188.51	$129k	2.1%	Form 4
Mar 2	Eugene M Noel EVP & Chief Operating Officer	Sold10b5-1 plan 4 parts	41,209	$191.05 average	$7.87M	58%	Form 4
Feb 27	Ruth T Dowling EVP, Chief Admin Ofr, GC & Sec	Sold10b5-1 plan	656	$186.16	$122k	2.0%	Form 4
Feb 27	Robert Joseph Meyer SVP & Chief Accounting Officer	SoldNo plan	4,454	$186.73	$832k	15%	Form 4
Feb 17	Rodney M Smith EVP, CFO & Treasurer	Sold10b5-1 plan 4 parts	34,341	$192.09 average	$6.6M	32%	Form 4
Oct 31, 2025	Eugene F Reilly Director	Bought	5,554	$178.99	$994k	4114%	Form 4
Jul 31, 2025	Juan Font SVP, Pres. & CEO, CoreSite	SoldNo plan	720	$208.33	$150k	3.0%	Form 4
Mar 17, 2025	Sanjay Goel EVP & President, Asia-Pacific	SoldNo plan	4,000	$215.92	$864k	14%	Form 4
Feb 26, 2025 – Feb 27, 2025	Robert Joseph Meyer Jr SVP & Chief Accounting Officer	SoldNo plan 2 parts	5,663	$201.67 average	$1.14M	18%	Form 4
Feb 26, 2025	Pamela D A Reeve Director	SoldNo plan	4,971	$202.97	$1.01M	20%	Form 4
Feb 13, 2025	Rodney M Smith EVP, CFO & Treasurer	Sold10b5-1 plan 2 parts	16,568	$189.70 average	$3.14M	21%	Form 4
Jan 16, 2025	Rodney M Smith EVP, CFO & Treasurer	Sold10b5-1 plan 2 parts	16,567	$181.10 average	$3M	21%	Form 4

Oct 25, 2024 – Oct 20
Teresa Hillary Clarke
Director · bought 274 at avg $188.15
$52k
5.1% of stake
Aug 21
Rajesh Kalathur
Director · bought 2,829 at $177.00
$501k
55% of stake
Jul 29No plan
Robert Joseph Meyer
SVP & Advisor to the CFO · sold 5,000 at $178.89
$894k
19% of stake
Jul 28 – 2910b5-1 plan
Ruth T Dowling
EVP, Chief Admin Ofr, GC & Sec · sold 1,791 at avg $172.89
$310k
6.1% of stake
Apr 28 – 2910b5-1 plan
Ruth T Dowling
EVP, Chief Admin Ofr, GC & Sec · sold 972 at avg $178.08
$173k
3.2% of stake
Mar 10
Rajesh Kalathur
Director · bought 2,671 at $185.30
$495k
110% of stake
Mar 410b5-1 plan
Steven O Vondran
President and CEO · sold 33,482 at avg $188.46
$6.31M
24% of stake
Mar 410b5-1 plan
Ruth T Dowling
EVP, Chief Admin Ofr, GC & Sec · sold 682 at $188.51
$129k
2.1% of stake
Mar 210b5-1 plan
Eugene M Noel
EVP & Chief Operating Officer · sold 41,209 at avg $191.05
$7.87M
58% of stake
Feb 2710b5-1 plan
Ruth T Dowling
EVP, Chief Admin Ofr, GC & Sec · sold 656 at $186.16
$122k
2.0% of stake
Feb 27No plan
Robert Joseph Meyer
SVP & Chief Accounting Officer · sold 4,454 at $186.73
$832k
15% of stake
Feb 1710b5-1 plan
Rodney M Smith
EVP, CFO & Treasurer · sold 34,341 at avg $192.09
$6.6M
32% of stake
Oct 31, 2025
Eugene F Reilly
Director · bought 5,554 at $178.99
$994k
4114% of stake
Jul 31, 2025No plan
Juan Font
SVP, Pres. & CEO, CoreSite · sold 720 at $208.33
$150k
3.0% of stake
Mar 17, 2025No plan
Sanjay Goel
EVP & President, Asia-Pacific · sold 4,000 at $215.92
$864k
14% of stake
Feb 26, 2025 – Feb 27, 2025No plan
Robert Joseph Meyer Jr
SVP & Chief Accounting Officer · sold 5,663 at avg $201.67
$1.14M
18% of stake
Feb 26, 2025No plan
Pamela D A Reeve
Director · sold 4,971 at $202.97
$1.01M
20% of stake
Feb 13, 202510b5-1 plan
Rodney M Smith
EVP, CFO & Treasurer · sold 16,568 at avg $189.70
$3.14M
21% of stake
Jan 16, 202510b5-1 plan
Rodney M Smith
EVP, CFO & Treasurer · sold 16,567 at avg $181.10
$3M
21% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch AMT, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in AMT's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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