Thomas M. Wojcik - 08 Sep 2025 Form 4 Insider Report for AFFILIATED MANAGERS GROUP, INC. (AMG)

Reporting relationship: President and COO
Issuer ticker: AMG
Reported as of: 08 Sep 2025
Net transaction value: -$17,442,609
SEC form: 4
Accepted by SEC: 09 Sep 2025, 17:03:55 UTC
Prior SEC filing: 07 Mar 2025
Next SEC filing: 09 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Kavita Padiyar, Attorney-in-Fact

Key filing fact

Thomas M. Wojcik filed Form 4 for AFFILIATED MANAGERS GROUP, INC. (AMG) on 09 Sep 2025.

Key facts

This page summarizes Thomas M. Wojcik's Form 4 filing for AFFILIATED MANAGERS GROUP, INC. (AMG).
4 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 09 Sep 2025, 17:03.

Change

Previous filing in this sequence was filed on 07 Mar 2025.
Current net transaction value: -$17,442,609.

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 0001776685 Primary reporting owner

Wojcik Thomas M

Relationship: President and COO
Address: C/O AFFILIATED MANAGERS GROUP, INC., 777 SOUTH FLAGLER DRIVE, WEST PALM BEACH
Signature: /s/ Kavita Padiyar, Attorney-in-Fact
Signature date: 09 Sep 2025

Reported non-derivative transactions

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

AMG transaction

Common Stock

Options Exercise

Transaction value: $12,611,380
Shares: +169,303
Change %: +142%
Price: $74.49
Shares after: 288,718
Date: 08 Sep 2025
Ownership: Direct

AMG transaction

Common Stock

Tax liability

Transaction value: $26,357,510
Shares: -114,008
Change %: -39%
Price: $231.19
Shares after: 174,710
Date: 08 Sep 2025
Ownership: Direct

AMG transaction

Common Stock

Sale

Transaction value: $3,696,480
Shares: -16,000
Change %: -9.2%
Price: $231.03
Shares after: 158,710
Date: 09 Sep 2025
Ownership: Direct
Footnotes: F1

Reported derivative securities

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

AMG transaction Derivative

Employee Stock Option (Right to Buy)

Options Exercise

Transaction value: $0
Shares: -169,303
Change %: -99%
Price: $0.000000
Shares after: 1,342
Date: 08 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 169,303
Exercise price: $74.49

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The sale reflects the weighted average sales price of the shares sold; the individual transaction prices ranged from $229.95 to $233.05. Specific transaction details will be provided to the SEC upon request.