CIK 0001053507 · Large accelerated filer
AMERICAN TOWER CORP /MA/
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- AMT
- Exchange
- NYSE
- Industry
- Real Estate Investment Trusts
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 650723837
- Phone
- 6173757500
- Business address
- 222 BERKELEY STREET, BOSTON, MA, 02116
- Former names
- AMERICAN TOWER SYSTEMS CORP
- Open-market buys, last 90 days
- $508,597
- in 2 filings
- Open-market sales, last 90 days
- $403,084
- in 2 filings, $291K under 10b5-1 plans
Net +$105,513. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-10-30 | Font Juan SVP, Pres. & CEO, CoreSite | Sale | −592 | $189.63 | $112K | 27,810 |
| 2026-10-29 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | Sale 10b5-1 | −952 | $185.81 | $177K | 26,133 |
| 2026-10-28 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | Sale 10b5-1 | −626 | $182.00 | $114K | 27,085 |
| 2026-10-20 | Clarke Teresa Hillary Director | Purchase | +42.93 | $183.20 | $8K | 5,645.23 |
| 2026-10-01 | Blanchett Paul SVP & Chief Accounting Officer | Grant or award | +16,299 | 16,299 | ||
| 2026-08-21 | Kalathur Rajesh Director | Purchase | +2,829 | $177.00 | $501K | 7,765 |
| 2026-07-29 | Meyer Robert Joseph SVP & Advisor to the CFO | Sale | −5,000 | $178.89 | $894K | 21,428 |
| 2026-07-29 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | Sale 10b5-1 | −1,106 | $174.96 | $194K | 27,711 |
| 2026-07-28 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | Sale 10b5-1 | −685 | $169.54 | $116K | 28,817 |
| 2026-07-13 | Clarke Teresa Hillary Director | Purchase | +46.45 | $167.52 | $8K | 5,602.31 |
| 2026-06-01 | Meyer Robert Joseph SVP & Advisor to the CFO | Shares withheld for taxes | −153 | $187.53 | $29K | 26,286 |
| 2026-05-28 | REEVE PAMELA D A Director | Gift | −810 | 21,089 | ||
| 2026-04-29 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | Sale 10b5-1 | −416 | $177.54 | $74K | 29,461 |
| 2026-04-28 | Clarke Teresa Hillary Director | Purchase | +43.5 | $177.08 | $8K | 5,555.86 |
| 2026-04-28 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | Sale 10b5-1 | −556 | $178.48 | $99K | 29,877 |
| 2026-03-11 | Rossi Richard C EVP & President, U.S. Tower | Shares withheld for taxes | −684 | $182.85 | $125K | 17,518 |
| 2026-03-11 | Font Juan SVP, Pres. & CEO, CoreSite | Shares withheld for taxes | −928 | $182.85 | $170K | 28,352 |
| 2026-03-11 | Smith Rodney M EVP, CFO & Treasurer | Shares withheld for taxes | −1,295 | $182.85 | $237K | 92,542 |
| 2026-03-11 | Meyer Robert Joseph SVP & Chief Accounting Officer | Shares withheld for taxes | −684 | $182.85 | $125K | 26,439 |
| 2026-03-11 | Dowling Ruth T EVP, Chief Admin Ofr, GC & Sec | Shares withheld for taxes | −863 | $182.85 | $158K | 30,433 |
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