LYTIR

Company · AMT

American Tower Corporation (REIT)

Name as listed on its exchange; filed with the SEC as AMERICAN TOWER CORP /MA/.

Nasdaq's symbol directory lists AMT on the New York Stock Exchange as “American Tower Corporation (REIT) Common Stock”.

In the 12 months to Nov 8, 2026: insiders bought on 5 occasions ($529K); insiders sold on 8 occasions ($1.8M); 4 planned-sale notices; 3 congressional trade disclosures; 5 company reports (Form 8-K, since May 26, 2026).

All insider filings at the SEC

Insider purchases and sales, by month (last 12 months)Insider purchases: $529K in total; Insider sales: $1.8M in total.Feb: Insider purchases $5KApr: Insider purchases $8KApr: Insider sales $173KJul: Insider purchases $8KJul: Insider sales $1.2MAug: Insider purchases $501KOct: Insider purchases $8KOct: Insider sales $403KDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $529KInsider sales below: $1.8M
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.

Insider trades · SEC Form 4

Those inside the hall

Open-market purchases and sales only. Legs one person filed for one day are combined.

Who traded

  1. Meyer Robert Joseph, SVP & Advisor to the CFO sold on 1 day latest Jul 29, 2026 sold $894K
  2. Dowling Ruth T, EVP, Chief Admin Ofr, GC & Sec sold on 6 days all under a 10b5-1 plan latest Oct 29, 2026 sold $774K
  3. Rajesh Kalathur bought on 1 day latest Aug 21, 2026 bought $501K
  4. Font Juan, SVP, Pres. & CEO, CoreSite sold on 1 day latest Oct 30, 2026 sold $112K
  5. Clarke Teresa Hillary bought on 4 days latest Oct 20, 2026 bought $28K
Every trade (13)
  1. SELLFont Juan, SVP, Pres. & CEO, CoreSite sold Oct 30, 2026 592 shares filing $112K
  2. SELLDowling Ruth T, EVP, Chief Admin Ofr, GC & Sec sold Oct 29, 2026 952 shares 10b5-1 plan (scheduled) filing $177K
  3. SELLDowling Ruth T, EVP, Chief Admin Ofr, GC & Sec sold Oct 28, 2026 626 shares 10b5-1 plan (scheduled) filing $114K
  4. BUYClarke Teresa Hillary bought Oct 20, 2026 42 shares filing $8K
  5. BUYRajesh Kalathur bought Aug 21, 2026 2,829 shares filing $501K
  6. SELLMeyer Robert Joseph, SVP & Advisor to the CFO sold Jul 29, 2026 5,000 shares filing $894K
  7. SELLDowling Ruth T, EVP, Chief Admin Ofr, GC & Sec sold Jul 29, 2026 1,106 shares 10b5-1 plan (scheduled) filing $194K
  8. SELLDowling Ruth T, EVP, Chief Admin Ofr, GC & Sec sold Jul 28, 2026 685 shares 10b5-1 plan (scheduled) filing $116K
  9. BUYClarke Teresa Hillary bought Jul 13, 2026 46 shares filing $8K
  10. SELLDowling Ruth T, EVP, Chief Admin Ofr, GC & Sec sold Apr 29, 2026 416 shares 10b5-1 plan (scheduled) filing $74K
  11. SELLDowling Ruth T, EVP, Chief Admin Ofr, GC & Sec sold Apr 28, 2026 556 shares 10b5-1 plan (scheduled) filing $99K
  12. BUYClarke Teresa Hillary bought Apr 28, 2026 43 shares filing $8K
  13. BUYClarke Teresa Hillary bought Feb 2, 2026 30 shares filing $5K

Planned sales · SEC Form 144

Notice given

A Form 144 is filed before an insider sells restricted stock. It states an intent; the sale, if it happens, appears later on a Form 4. Every recent notice

  1. JUAN FONT HERNANDEZ filed Oct 30, 2026 Officer 592 shares planned sale date 10/30/2026 filing $112K
  2. RUTH T DOWLING filed Oct 28, 2026 Officer 1,578 shares planned sale date 10/28/2026 filing $290K
  3. ROBERT MEYER filed Jul 29, 2026 Officer 5,000 shares planned sale date 07/29/2026 filing $894K
  4. RUTH T DOWLING filed Jul 28, 2026 Officer 1,791 shares planned sale date 07/28/2026 filing $299K

Congress · STOCK Act

The Althing

Periodic transaction reports. Amounts are the ranges members report; the trade date is when it happened, the report can come up to 45 days later.

  1. Dwight Evans (D-PA03): Sale May 11, 2026 reported May 15, 2026 one of 5 trades the member reported that day House Stocks (including ADRs) $1,001 - $15,000
  2. Richard Dean Dr McCormick (R-GA06): Sale Apr 17, 2026 reported May 12, 2026 House Stocks (including ADRs) $1,001 - $15,000
  3. Alan Armstrong (R-OK): Sale (Full) Mar 27, 2026 reported Jul 21, 2026 one of 703 trades the member reported that day Senate Stock $1,001 - $15,000

Company reports · SEC Form 8-K

In its own words

Current reports the company filed with the SEC; most items are due within four business days of the event. Each line lists the report's items by the SEC's own titles; the filing says what happened. Reports collected since May 26, 2026; every 8-K at the SEC.

  1. Results of operations and financial condition filing Oct 27, 2026
  2. Departure or appointment of directors or officers; Other events filing Sep 18, 2026
  3. Entry into a material definitive agreement; Creation of a direct financial obligation filing Sep 14, 2026
  4. Other events filing Sep 9, 2026
  5. Results of operations and financial condition filing Jul 28, 2026

Sources: SEC EDGAR (Forms 4, 144 and 8-K) and STOCK Act periodic transaction reports. Filings can be late, amended or wrong at the source; see methodology.