(AMT)

Reporting relationship: President and CEO, Director
Issuer ticker: AMT
Reported as of: 10 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 12 Mar 2026, 16:38:04 UTC
Prior SEC filing: 06 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Marina A. Breed, as attorney-in-fact

Key filing fact

Vondran Steven O filed Form 4 for AMERICAN TOWER CORP /MA/ (AMT) on 12 Mar 2026.

Key facts

This page summarizes Vondran Steven O's Form 4 filing for AMERICAN TOWER CORP /MA/ (AMT).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 12 Mar 2026, 16:38.

Change

Previous filing in this sequence was filed on 06 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001749304 Primary reporting owner

Vondran Steven O

Relationship: President and CEO, Director
Address: 222 BERKELEY STREET, BOSTON
Signature: /s/ Marina A. Breed, as attorney-in-fact
Signature date: 12 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AMT transaction

Common Stock

Award

Transaction value
Shares: +20,955
Change %: +20%
Price: $0.000000^*
Shares after: 126,329
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1

AMT transaction

Common Stock

Tax liability

Transaction value
Shares: -15,269
Change %: -12%
Price: $186.12^*
Shares after: 111,060
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F2

AMT transaction

Common Stock

Tax liability

Transaction value
Shares: -2,158
Change %: -1.9%
Price: $182.85^*
Shares after: 108,902
Date: 11 Mar 2026
Ownership: Direct
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended (the "Plan"), and vest 1/3rd annually over three years, commencing one year from the date of grant. Each RSU represents a contingent right to receive one share of Common Stock.

Footnote F2

Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs and performance-based restricted stock units previously granted under the Plan.

Footnote F3

Shares delivered to the issuer for the payment of withholding taxes in connection with the vesting of RSUs previously granted under the Plan.