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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.
$106K net buying - trailing 90 days
2 buyers - 2 unique sellers
Historical context: most recent complete month (2026-10) is the 26th percentile of this ticker's monthly net P/S flow over 25 complete months. Lower percentiles are more selling; higher are more buying. P10–P90: -$4.4M to $0.
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.
Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
Who is responsible
| Insider | Role | Net activity | Rows |
|---|---|---|---|
| Kalathur Rajesh | — | ~$0.5M | 1 |
| Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | -~$0.3M | 2 |
| Font Juan | SVP, Pres. & CEO, CoreSite | -~$0.1M | 1 |
| Clarke Teresa Hillary | — | ~$8K | 1 |
Transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| October 30, 2026 | Font Juan | SVP, Pres. & CEO, CoreSite | S | -592 | 189.63 | ~$0.1M |
| October 29, 2026 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | S | -952 | 185.81 | ~$0.2M |
| October 28, 2026 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | S | -626 | 182 | ~$0.1M |
| October 20, 2026 | Clarke Teresa Hillary | — | P | 42.926 | 183.2 | ~$8K |
| August 21, 2026 | Kalathur Rajesh | — | P | 2829 | 177 | ~$0.5M |
| July 29, 2026 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | S | -1106 | 174.96 | ~$0.2M |
| July 29, 2026 | Meyer Robert Joseph | SVP & Advisor to the CFO | S | -5000 | 178.89 | ~$0.9M |
| July 28, 2026 | Dowling Ruth T | EVP, Chief Admin Ofr, GC & Sec | S | -685 | 169.54 | ~$0.1M |
| July 13, 2026 | Clarke Teresa Hillary | — | P | 46.448 | 167.52 | ~$8K |
| 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 |
| April 28, 2026 | Clarke Teresa Hillary | — | P | 43.5 | 177.08 | ~$8K |
| 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 4, 2026 | Vondran Steven O | President and CEO | S | -1773 | 189.82 | ~$0.3M |
| March 4, 2026 | Vondran Steven O | President and CEO | S | -16625 | 188.82 | ~$3.1M |
| March 4, 2026 | Vondran Steven O | President and CEO | S | -15084 | 187.9 | ~$2.8M |
| March 2, 2026 | Noel Eugene M | EVP & Chief Operating Officer | 4 reported sale rows | 41209 | — | ~$7.9M |
| March 2, 2026 | Noel Eugene M | EVP & Chief Operating Officer | S | -5242 | 189.36 | ~$1.0M |
| March 2, 2026 | Noel Eugene M | EVP & Chief Operating Officer | S | -7378 | 190.29 | ~$1.4M |
| March 2, 2026 | Noel Eugene M | EVP & Chief Operating Officer | S | -21604 | 191.4 | ~$4.1M |
| March 2, 2026 | Noel Eugene M | EVP & Chief Operating Officer | S | -6985 | 192.03 | ~$1.3M |
| 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 |
| February 17, 2026 | Smith Rodney M | EVP, CFO & Treasurer | S | -22658 | 192.49 | ~$4.4M |
| February 17, 2026 | Smith Rodney M | EVP, CFO & Treasurer | S | -9596 | 191.52 | ~$1.8M |
| February 17, 2026 | Smith Rodney M | EVP, CFO & Treasurer | S | -2086 | 190.35 | ~$0.4M |
| February 17, 2026 | Smith Rodney M | EVP, CFO & Treasurer | S | -1 | 193.13 | ~$0K |
| February 2, 2026 | Clarke Teresa Hillary | — | P | 30.713 | 178.04 | ~$5K |
| October 31, 2025 | REILLY EUGENE F | — | P | 5554 | 178.99 | ~$1.0M |
| October 20, 2025 | Clarke Teresa Hillary | — | P | 28.657 | 189.12 | ~$5K |
| July 31, 2025 | Font Juan | SVP, Pres. & CEO, CoreSite | S | -720 | 208.33 | ~$0.1M |
| July 11, 2025 | Clarke Teresa Hillary | — | P | 24.095 | 223.23 | ~$5K |
| April 28, 2025 | Clarke Teresa Hillary | — | P | 25.488 | 209.33 | ~$5K |
| 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 | REEVE PAMELA D A | — | S | -4971 | 202.97 | ~$1.0M |
| February 26, 2025 | Meyer Robert Joseph JR | SVP & Chief Accounting Officer | S | -2724 | 201.12 | ~$0.5M |
| February 13, 2025 | Smith Rodney M | EVP, CFO & Treasurer | 2 reported sale rows | 16568 | — | ~$3.1M |
| February 13, 2025 | Smith Rodney M | EVP, CFO & Treasurer | S | -1517 | 190.34 | ~$0.3M |
| February 13, 2025 | Smith Rodney M | EVP, CFO & Treasurer | S | -15051 | 189.64 | ~$2.9M |
| February 3, 2025 | Clarke Teresa Hillary | — | P | 17.577 | 187.27 | ~$3K |
| January 16, 2025 | Smith Rodney M | EVP, CFO & Treasurer | 2 reported sale rows | 16567 | — | ~$3.0M |
| January 16, 2025 | Smith Rodney M | EVP, CFO & Treasurer | S | -2276 | 181.57 | ~$0.4M |
| January 16, 2025 | Smith Rodney M | EVP, CFO & Treasurer | S | -14291 | 181.03 | ~$2.6M |
| October 25, 2024 | Clarke Teresa Hillary | — | P | 14.371 | 227.42 | ~$3K |
| 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 |
| July 12, 2024 | Clarke Teresa Hillary | — | P | 15.873 | 204.28 | ~$3K |
| April 26, 2024 | Clarke Teresa Hillary | — | P | 18.588 | 172.82 | ~$3K |
| February 1, 2024 | Clarke Teresa Hillary | — | P | 7.68 | 199.95 | ~$2K |
| October 27, 2023 | Clarke Teresa Hillary | — | P | 8.452 | 171.52 | ~$1K |
| July 10, 2023 | Clarke Teresa Hillary | — | P | 7.192 | 193.78 | ~$1K |
| April 28, 2023 | Clarke Teresa Hillary | — | P | 6.674 | 205.93 | ~$1K |