Research Open Terminal →

← Unusual insider activity · Company hub

AMT American Tower Corporation

Insider figures are trailing 90 days, open-market Form 4 only. Institutional figures are the latest reported quarter. These windows are not simultaneous.

-$703K net selling - trailing 90 days

1 buyers - 2 unique sellers

Historical context: No open-market activity in Sep 2026 — insiders traded in 10 of the last 24 months

Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

open-market Form 4 only - grants, exercises, tax withholding excluded. ~ derived from SEC-reported shares x price.

Insider net $ (monthly)open-market Form 4 only - grants, exercises, tax withholding excluded$20.0M$10.0M$0-$10.0M-$20.0M2024-10 $02024-11 $02024-12 $02025-01 -$3.0M2025-02 -$5.3M2025-03 -$864K2025-04 $02025-05 $02025-06 $02025-07 -$150K2025-08 $02025-09 $02025-10 $994K2025-11 $02025-12 $02026-01 $02026-02 -$7.6M2026-03 -$13.8M2026-04 -$173K2026-05 $02026-06 $02026-07 -$1.2M2026-08 $501K2026-09 $0Oct 24Dec 24Feb 25Apr 25Jun 25Aug 25Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26~ derived from SEC-reported shares x price. Hatched: excluded (implausible price) or unpriced.

Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

Who is responsible

Insider Role Net activity Rows
Meyer Robert Joseph SVP & Advisor to the CFO -~$0.9M 1
Kalathur Rajesh — ~$0.5M 1
Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec -~$0.3M 2

Transactions

Date Insider Role Type Shares Price Value
August 21, 2026 Kalathur Rajesh — P 2829 177 ~$0.5M
July 29, 2026 Meyer Robert Joseph SVP & Advisor to the CFO S -5000 178.89 ~$0.9M
July 29, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec S -1106 174.96 ~$0.2M
July 28, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec S -685 169.54 ~$0.1M
April 29, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec S -416 177.54 ~$74K
April 28, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec S -556 178.48 ~$99K
March 10, 2026 Kalathur Rajesh — P 2671 185.3 ~$0.5M
March 4, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec S -682 188.51 ~$0.1M
March 4, 2026 Vondran Steven O President and CEO 3 reported sale rows 33482 — ~$6.3M
March 2, 2026 Noel Eugene M EVP & Chief Operating Officer 4 reported sale rows 41209 — ~$7.9M
February 27, 2026 Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec S -656 186.16 ~$0.1M
February 27, 2026 Meyer Robert Joseph SVP & Chief Accounting Officer S -4454 186.73 ~$0.8M
February 17, 2026 Smith Rodney M EVP, CFO & Treasurer 4 reported sale rows 34341 — ~$6.6M
October 31, 2025 REILLY EUGENE F — P 5554 178.99 ~$1.0M
July 31, 2025 Font Juan SVP, Pres. & CEO, CoreSite S -720 208.33 ~$0.1M
March 17, 2025 Goel Sanjay EVP & President, Asia-Pacific S -4000 215.92 ~$0.9M
February 27, 2025 Meyer Robert Joseph JR SVP & Chief Accounting Officer S -2939 202.18 ~$0.6M
February 26, 2025 Meyer Robert Joseph JR SVP & Chief Accounting Officer S -2724 201.12 ~$0.5M
February 26, 2025 REEVE PAMELA D A — S -4971 202.97 ~$1.0M
February 13, 2025 Smith Rodney M EVP, CFO & Treasurer 2 reported sale rows 16568 — ~$3.1M
January 16, 2025 Smith Rodney M EVP, CFO & Treasurer 2 reported sale rows 16567 — ~$3.0M
September 13, 2024 Goel Sanjay EVP & President, Asia-Pacific S -5000 238 ~$1.2M
September 10, 2024 Noel Eugene M EVP & President, U.S. Tower S -33135 240 ~$8.0M