<SEC-DOCUMENT>0001053507-25-000127-index.html : 20250829
<SEC-HEADER>0001053507-25-000127.hdr.sgml : 20250829
<ACCEPTANCE-DATETIME>20250829162225
ACCESSION NUMBER:		0001053507-25-000127
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20250822
FILED AS OF DATE:		20250829
DATE AS OF CHANGE:		20250829

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			REILLY EUGENE F
		CENTRAL INDEX KEY:			0001266076
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14195
		FILM NUMBER:		251281223

	MAIL ADDRESS:	
		STREET 1:		C/O AMB PROPERTY CORP
		STREET 2:		PIER I BAY 1
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMERICAN TOWER CORP /MA/
		CENTRAL INDEX KEY:			0001053507
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		ORGANIZATION NAME:           	05 Real Estate & Construction
		EIN:				650723837
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		116 HUNTINGTON AVE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		6173757500

	MAIL ADDRESS:	
		STREET 1:		116 HUNTINGTON AVE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMERICAN TOWER SYSTEMS CORP
		DATE OF NAME CHANGE:	19980128
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>wk-form3_1756498940.xml
<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: wk-form3_1756498940.html

Document 1 - RAW XML: wk-form3_1756498940.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>poareilly.htm
<DESCRIPTION>EX-24
<TEXT>
Document 2 - file: poareilly.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>poareilly001.jpg
<TEXT>
Document 3 - file: poareilly001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>poareilly002.jpg
<TEXT>
Document 4 - file: poareilly002.jpg

</DOCUMENT>
</SEC-DOCUMENT>