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AMTAmerican Tower

Real estate · REIT · NYSE

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Filings with the SEC since May 2, 2017

1,009 filings, 10 in the last 30 days

SEC filing index

Latest annual reportOpen ↗

Feb 24, 2026

10-K, period to Dec 31, 2025

Latest quarterly reportOpen ↗

Oct 27, 2026

10-Q, period to Sep 30, 2026

Latest current reportOpen ↗

Nov 9, 2026

8-K: Other events

Filed in the last 30 days

of 1,009 in all

Timeline

Every filing on one line

1 yr 2 yr 3 yr

Annual report (10-K)Quarterly report (10-Q)Current report (8-K)Auditor changeCEO, CFO, COO or CAO changeRestatementLate filing noticeInsider purchaseCluster buy (3+ insiders)SEC comment letterShare offering (S-3, 424B)

20252026

All 58 events

Nov 9, 20268-K Other events 8-K item 8.01
Oct 27, 20268-K Quarterly results 8-K item 2.02
Oct 27, 202610-Q Quarterly report (10-Q) period ended Sep 30, 2026
Oct 22, 2026Buy Clarke Teresa Hillary (Director) bought $64K open-market purchase on Apr 28, 2023, reported 3 years late
Sep 18, 20268-K Director or officer change, Other events 8-K items 5.02, 8.01
Sep 14, 20268-K Material agreement signed, New debt or obligation 8-K items 1.01, 2.03
Sep 9, 20268-K Other events 8-K item 8.01
Aug 25, 2026Buy Kalathur Rajesh (Director) bought $501K open-market purchase on Aug 21, 2026
Jul 28, 20268-K Quarterly results 8-K item 2.02
Jul 28, 202610-Q Quarterly report (10-Q) period ended Jun 30, 2026
Jun 4, 20268-K Other events 8-K item 8.01
Jun 2, 20268-K Other events 8-K item 8.01
May 27, 20268-K Material agreement signed, New debt or obligation 8-K items 1.01, 2.03
May 21, 20268-K Director or officer change, Shareholder vote results, Other events 8-K items 5.02, 5.07, 8.01
May 19, 20268-K Other events 8-K item 8.01
May 7, 20268-K Material agreement signed, New debt or obligation 8-K items 1.01, 2.03
Apr 28, 20268-K Quarterly results 8-K item 2.02
Apr 28, 202610-Q Quarterly report (10-Q) period ended Mar 31, 2026
Mar 10, 20268-K Director or officer change 8-K item 5.02
Mar 5, 20268-K Other events 8-K item 8.01
Feb 27, 20268-K Director or officer change 8-K item 5.02
Feb 24, 20268-K Quarterly results 8-K item 2.02
Feb 24, 202610-K Annual report (10-K) period ended Dec 31, 2025
Jan 29, 2026Officer CAO change (c) On January 26, 2026, American Tower Corporation (the “Company”) appointed Paul Blanchett as its Senior Vice President and Chief Accounting Officer (Principal Accounting Officer), effective April 27, 2026 (the “Start Date”).
Jan 28, 20268-K Other events 8-K item 8.01
Dec 5, 20258-K Material agreement signed, New debt or obligation 8-K items 1.01, 2.03
Dec 4, 20258-K Other events 8-K item 8.01
Dec 2, 20258-K Other events 8-K item 8.01
Nov 7, 2025Officer CAO change Meyer communicated his intention to retire from his role as Senior Vice President and Chief Accounting Officer of American Tower Corporation (the “Company”).
Oct 28, 20258-K Quarterly results 8-K item 2.02
Oct 28, 202510-Q Quarterly report (10-Q) period ended Sep 30, 2025
Sep 24, 20258-K Regulation FD disclosure 8-K item 7.01
Sep 18, 20258-K Director or officer change, Other events 8-K items 5.02, 8.01
Sep 16, 20258-K Material agreement signed, New debt or obligation 8-K items 1.01, 2.03
Sep 11, 20258-K Other events 8-K item 8.01
Sep 5, 20258-K Regulation FD disclosure 8-K item 7.01
Aug 25, 20258-K Director or officer change 8-K item 5.02
Jul 29, 20258-K Quarterly results 8-K item 2.02
Jul 29, 202510-Q Quarterly report (10-Q) period ended Jun 30, 2025
Jun 2, 2025Offering Shelf registration: shares and other securities, amount not fixed S-3ASR · This prospectus contains summary descriptions of the common stock, preferred stock, debt securities, guarantees, depositary shares, warrants, purchase contracts and units that we or selling securityholders may sell from time to time.
May 30, 20258-K Material agreement signed, New debt or obligation 8-K items 1.01, 2.03
May 21, 20258-K Other events 8-K item 8.01
May 15, 20258-K Shareholder vote results, Other events 8-K items 5.07, 8.01
Apr 29, 20258-K Quarterly results 8-K item 2.02
Apr 29, 202510-Q Quarterly report (10-Q) period ended Mar 31, 2025
Mar 20, 20258-K Director or officer change 8-K item 5.02
Mar 14, 20258-K Material agreement signed, New debt or obligation 8-K items 1.01, 2.03
Mar 11, 20258-K Other events 8-K item 8.01
Mar 6, 20258-K Other events 8-K item 8.01
Mar 5, 20258-K Director or officer change 8-K item 5.02
Feb 25, 20258-K Quarterly results 8-K item 2.02
Feb 25, 202510-K Annual report (10-K) period ended Dec 31, 2024
Feb 5, 20258-K Director or officer change 8-K item 5.02
Jan 28, 20258-K Material agreement signed, New debt or obligation 8-K items 1.01, 2.03
Jan 7, 20258-K Director or officer change, Bylaws or fiscal year changed 8-K items 5.02, 5.03
Dec 5, 20248-K Other events 8-K item 8.01
Nov 21, 20248-K Material agreement signed, New debt or obligation 8-K items 1.01, 2.03
Nov 19, 20248-K Other events 8-K item 8.01

From the SEC filing index. Insider purchases go back 180 days (the Form 4s downloaded).

Every filing

Newest first, by kind

Each form links to sec.gov

All 1009 Annual & quarterly 38 Current reports (8-K) 235 Insiders 551 Proxy & votes 20 Big owners (13D/13G) 24 Shares & debt offered 99 SEC letters 7 Other 35

Filed	Form	What it is	Period
Apr 28, 2026	DEFA14A	Extra proxy material		all files
Apr 8, 2026	DEFA14A	Extra proxy material		all files
Apr 8, 2026	DEF 14A	Proxy statement	May 20, 2026	all files
Apr 2, 2025	DEFA14A	Extra proxy material		all files
Apr 2, 2025	DEF 14A	Proxy statement	May 14, 2025	all files
Apr 17, 2024	PX14A6G	Shareholder's proxy letter		all files
Apr 10, 2024	DEFA14A	Extra proxy material		all files
Apr 10, 2024	DEF 14A	Proxy statement	May 22, 2024	all files
Apr 12, 2023	DEFA14A	Extra proxy material		all files
Apr 12, 2023	DEF 14A	Proxy statement		all files
Apr 6, 2022	DEFA14A	Extra proxy material		all files
Apr 6, 2022	DEF 14A	Proxy statement	May 18, 2022	all files
Apr 14, 2021	DEFA14A	Extra proxy material		all files
Apr 14, 2021	DEF 14A	Proxy statement	May 26, 2021	all files
Apr 6, 2020	DEFA14A	Extra proxy material		all files
Apr 6, 2020	DEF 14A	Proxy statement	May 18, 2020	all files
Apr 10, 2019	DEFA14A	Extra proxy material		all files
Apr 10, 2019	DEF 14A	Proxy statement	May 21, 2019	all files
Apr 12, 2018	DEFA14A	Extra proxy material		all files
Apr 12, 2018	DEF 14A	Proxy statement	May 23, 2018	all files

Press releases with quarterly results are attached to the 8-Ks marked "Quarterly results"; read them on Earnings releases.

Next Earnings releases →