AMERICAN TOWER CORP /MA/ reports

Company location: Boston, MA
Fiscal year end: 31 December

AMERICAN TOWER CORP /MA/ has filed 2,590 SEC EDGAR filings since 10 Feb 1998

Filter by type:
10-K
10-Q
8-K
SC13D
SC13G

SEC filing history

Showing 26-50 of 1,000 matching filings.

Per page

25

Current page

2

DEFA14A File 001-14195

DEFA14A

Filing date: 28 Apr 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 001-14195

10-Q

Filing date: 28 Apr 2026
Reporting date: 31 Mar 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

SCHEDULE 13G File 005-55211

SCHEDULE 13G filing

Filing date: 28 Apr 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-14195

8-K

Filing date: 28 Apr 2026
Reporting date: 28 Apr 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

ARS File 001-14195

ARS

Filing date: 08 Apr 2026
Reporting date: 31 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

DEFA14A File 001-14195

DEFA14A

Filing date: 08 Apr 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 001-14195

DEF 14A

Filing date: 08 Apr 2026
Reporting date: 20 May 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

SCHEDULE 13G/A File 005-55211

SCHEDULE 13G/A filing

Filing date: 26 Mar 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 12 Mar 2026
Reporting date: 10 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. to update or revoke optional consent for future visits. For more information, see our Privacy Policy .