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AMERICAN TOWER CORP (AMT)
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Filings
Date Filed
Type
Description
04/06/2022
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/06/2022
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/14/2021
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/14/2021
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/06/2020
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/06/2020
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/10/2019
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/10/2019
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/12/2018
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/12/2018
DEF 14A
Form DEF 14A - Other definitive proxy statements:
04/19/2017
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/19/2017
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/22/2016
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/22/2016
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/09/2015
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/09/2015
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/04/2014
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/04/2014
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/11/2013
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/11/2013
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/27/2012
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/27/2012
DEF 14A
Form DEF 14A - Other definitive proxy statements
10/11/2011
DEFM14A
Form DEFM14A - Definitive proxy statement relating to merger or acquisition
05/02/2011
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/07/2011
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/07/2011
DEF 14A
Form DEF 14A - Other definitive proxy statements
04/01/2010
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/01/2010
DEF 14A
Form DEF 14A - Other definitive proxy statements
03/27/2009
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
03/27/2009
DEF 14A
Form DEF 14A - Other definitive proxy statements
03/31/2008
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
03/31/2008
DEF 14A
Form DEF 14A - Other definitive proxy statements
03/21/2007
DEF 14A
Form DEF 14A - Other definitive proxy statements
03/29/2006
DEF 14A
Form DEF 14A - Other definitive proxy statements
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