AMERICAN TOWER CORP /MA/

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Entry into a Material Definitive Agreement

Prospectus Supplement for Delayed or Continuous Offering

Other Events

Free Writing Prospectus

Prospectus Supplement for Primary Offering

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Certification of approval for listing and registration on a national securities exchange

Other Events

Other Events

Entry into a Material Definitive Agreement

Registration of Securities on Exchange

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Notification of removal from listing and/or registration on a national securities exchange

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Prospectus Supplement for Delayed or Continuous Offering

Other Events

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Entry into a Material Definitive Agreement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Additional Information for Proxy Statement/ Votes

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Other Events

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Annual report pursuant to Section 13 or 15(d)

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Other Events

Entry into a Material Definitive Agreement

Other Events

Prospectus Supplement for Delayed or Continuous Offering

Other Events

Free Writing Prospectus

Prospectus Supplement for Primary Offering

General form for quarterly reports under Section 13 or 15(d)

Prospectus Supplement for Delayed or Continuous Offering

Free Writing Prospectus

Prospectus Supplement for Primary Offering

General form for quarterly reports under Section 13 or 15(d)

Certification of approval for listing and registration on a national securities exchange

Automatic Shelf Registration

Registration of Securities on Exchange

Prospectus Supplement for Delayed or Continuous Offering

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Shareholder Letter

Annual Report Scanned (Paper)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

No description available

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

No description available

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Annual Report Scanned (Paper)

No description available

No description available

No description available

Blanchett Paul

Ludgate Kristen M

Kalathur Rajesh

Meyer Robert Joseph

Dowling Ruth T

Meyer Robert Joseph

Dowling Ruth T

Meyer Robert Joseph

REEVE PAMELA D A

HORMATS ROBERT D

Blanchett Paul

Dowling Ruth T

REILLY EUGENE F

Noel Eugene M

Vondran Steven O

Kalathur Rajesh

Clarke Teresa Hillary