(AMT)

Reporting relationship: EVP, CFO & Treasurer
Issuer ticker: AMT
Reported as of: 17 Feb 2026
Net transaction value: -$3,344,091
SEC form: 4
Accepted by SEC: 19 Feb 2026, 16:07:36 UTC
Prior SEC filing: 12 Mar 2025
Next SEC filing: 27 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Marina A. Breed, as attorney-in-fact

Key filing fact

Rodney M. Smith filed Form 4 for AMERICAN TOWER CORP /MA/ (AMT) on 19 Feb 2026.

Key facts

This page summarizes Rodney M. Smith's Form 4 filing for AMERICAN TOWER CORP /MA/ (AMT).
6 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 19 Feb 2026, 16:07.

Change

Previous filing in this sequence was filed on 12 Mar 2025.
Current net transaction value: -$3,344,091.

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 0001807541 Primary reporting owner

Smith Rodney M

Relationship: EVP, CFO & Treasurer
Address: 222 BERKELEY STREET, BOSTON
Signature: /s/ Marina A. Breed, as attorney-in-fact
Signature date: 19 Feb 2026

Reported non-derivative transactions

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

AMT transaction

Common Stock

Options Exercise

Transaction value: $3,252,436
Shares: +34,341
Change %: +46%
Price: $94.71
Shares after: 108,655
Date: 17 Feb 2026
Ownership: Direct
Footnotes: F1

AMT transaction

Common Stock

Sale

Transaction value: $397,070
Shares: -2,086
Change %: -1.9%
Price: $190.35
Shares after: 106,569
Date: 17 Feb 2026
Ownership: Direct
Footnotes: F2, F3

AMT transaction

Common Stock

Sale

Transaction value: $1,837,826
Shares: -9,596
Change %: -9%
Price: $191.52
Shares after: 96,973
Date: 17 Feb 2026
Ownership: Direct
Footnotes: F2, F4

AMT transaction

Common Stock

Sale

Transaction value: $4,361,438
Shares: -22,658
Change %: -23%
Price: $192.49
Shares after: 74,315
Date: 17 Feb 2026
Ownership: Direct
Footnotes: F2, F5

AMT transaction

Common Stock

Sale

Transaction value: $193
Shares: -1
Change %: -0%
Price: $193.13
Shares after: 74,314
Date: 17 Feb 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

AMT transaction Derivative

Option to Purchase Common Stock

Options Exercise

Transaction value: $0
Shares: -34,341
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 17 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 34,341
Exercise price: $94.71
Footnotes: F6

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 6 footnotes

Footnote F1

Includes 93 and 26 shares acquired under the issuer's employee stock purchase plan in May 2025 and in November 2025, respectively.

Footnote F2

The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2025.

Footnote F3

Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $189.93 to $190.88 per share.

Footnote F4

Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $191.06 to $192.00 per share.

Footnote F5

Represents the weighted average price of shares sold in multiple same-day transactions at prices ranging from $192.13 to $193.00 per share.

Footnote F6

This option was granted pursuant to the 2007 Equity Incentive Plan, as amended, and is exercisable in 25% cumulative annual increments beginning March 10, 2017.