American Tower Corporation Watch

from 8-K 7 pages A Number of Psus (Which Number Could Be Zero) Will Vest and Any Underlying Shares Will Become Issuable on the Third Anniversary of the Date of Grant (The “Scheduled Vesting Date”), Subject to the Terms of This Agreement, Including but Not Limited to Appendix A, and the Terms of the Plan. American Tower Corporation Date by Your Signature Below, You Agree With the Company to the Terms of This Agreement. Participant Date ******************** Alternative (For Electronic Award Administration): Participant’s Online Acceptance Is Required Through E*trade

from 8-K 6 pages Date of Grant: , 20 Performance Period: January 1, 20 __ to December 31, 20__ Target Award: Scheduled Vesting Date: A Number of Psus (Which Number Could Be Zero) Will Vest and Any Underlying Shares Will Become Issuable on the Third Anniversary of the Date of Grant (The “Scheduled Vesting Date”), Subject to the Terms of This Agreement, Including but Not Limited to Appendix A, and the Terms of the Plan. American Tower Corporation Date by Your Signature Below, You Agree With the Company to the Terms of This Agreement. Participant Date ******************** Alternative (For Electronic Award Administration): Participant’s Online Acceptance Is Required Through E*trade

from 10-K 2 pages Material contract

from 10-K 2 pages Material contract

from 10-K 4 pages American Tower Corporation Severance Plan Program for Executive Vice Presidents and Chief Executive Officers as of January 1, 2024

from 10-K 10 pages American Tower Corporation Severance Plan First Effective as of March 2, 2009 as Amended and Restated January 1, 2024 Article 1 Purpose Article 2 Definitions

from 10-K 4 pages Terms of Restricted Stock Units

from 10-K 4 pages Terms of Restricted Stock Units

from 10-Q 7 pages A Number of Psus (Which Number Could Be Zero) Will Vest and Any Underlying Shares Will Become Issuable on the Third Anniversary of the Date of Grant (The “Scheduled Vesting Date”), Subject to the Terms of This Agreement, Including but Not Limited to Appendix A, and the Terms of the Plan. American Tower Corporation Date by Your Signature Below, You Agree With the Company to the Terms of This Agreement. Participant Date ******************** Alternative (For Electronic Award Administration): Participant’s Online Acceptance Is Required Through E*trade

from 10-Q 6 pages Date of Grant: , 20 Performance Period: January 1, 20 __ to December 31, 20__ Target Award: Scheduled Vesting Date: A Number of Psus (Which Number Could Be Zero) Will Vest and Any Underlying Shares Will Become Issuable on the Third Anniversary of the Date of Grant (The “Scheduled Vesting Date”), Subject to the Terms of This Agreement, Including but Not Limited to Appendix A, and the Terms of the Plan. American Tower Corporation Date by Your Signature Below, You Agree With the Company to the Terms of This Agreement. Participant Date ******************** Alternative (For Electronic Award Administration): Participant’s Online Acceptance Is Required Through E*trade

from 10-Q 3 pages On or After , 20 as to Shares

from 10-Q 4 pages Terms of Restricted Stock Units

from 10-Q 4 pages Terms of Restricted Stock Units

from 10-K 2 pages Material contract

from 10-K 3 pages On or After , 20 as to Shares

from 10-Q 10 pages American Tower Corporation 2000 Employee Stock Purchase Plan as Amended and Restated Effective September 10, 2021

from 10-Q 10 pages American Tower Corporation, a Delaware Corporation (The “Company”), Hereby Grants to the Participant Named Above (“You”) an Award of Performance-Based Restricted Stock Units (The “Psus”) Representing the Right to Receive a Number of Shares of Common Stock, Par Value $0.01 Per Share (The “Stock”) of the Company Equal To, Higher Than or Lower Than (Including Zero) the Number of Psus Subject to Your Target Award (As Set Forth Below) on the Terms of This Notice of Grant of Performance-Based Restricted Stock Units and Psu Agreement (This “Agreement”), Subject to Your Acceptance of This Agreement and the Provisions of the American Tower Corporation 2007 Equity Incentive Plan, as Amended From Time to Time (The “Plan”). Date of Grant: , 20 Performance Period: January 1, 20 to December 31, 20 Target Award: Scheduled Vesting Date: A Number of Psus (Which Number Could Be Zero) Will Vest and Any Underlying Shares Will Become Issuable on the Third Anniversary of the Date of Grant (The “Scheduled Vesting Date”), Subject to the Terms of This Agreement, Including but Not Limited to Appendix A, and the Terms of the Plan. American Tower Corporation Date by Your Signature Below, You Agree With the Company to the Terms of This Agreement. Participant Date ******************** Alternative (For Electronic Award Administration): Participant’s Online Acceptance Is Required Through E*trade

from 10-K 116 pages Certain Identified Information Has Been Excluded From the Exhibit Because It Is Both Not Material and Would Likely Cause Competitive Harm to the Registrant if Publicly Disclosed

from 10-K 116 pages Certain Identified Information Has Been Excluded From the Exhibit Because It Is Both Not Material and Would Likely Cause Competitive Harm to the Registrant if Publicly Disclosed

from 10-K 32 pages Project Scala Commitment Letter