Loren M. Starr - 30 Jul 2026 Form 4 Insider Report for AFFILIATED MANAGERS GROUP, INC. (AMG)

Reporting relationship: Director
Issuer ticker: AMG
Reported as of: 30 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 03 Aug 2026, 17:10:52 UTC
Prior SEC filing: 20 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Kavita Padiyar, Attorney-in-Fact

Key filing fact

Loren M. Starr filed Form 4 for AFFILIATED MANAGERS GROUP, INC. (AMG) on 03 Aug 2026.

Key facts

This page summarizes Loren M. Starr's Form 4 filing for AFFILIATED MANAGERS GROUP, INC. (AMG).
2 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 03 Aug 2026, 17:10.

Change

Previous filing in this sequence was filed on 20 Jul 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 0001217495 Primary reporting owner

STARR LOREN M

Relationship: Director
Address: C/O AFFILIATED MANAGERS GROUP, INC., 1001 U.S. HIGHWAY ONE NORTH, JUPITER
Signature: /s/ Kavita Padiyar, Attorney-in-Fact
Signature date: 03 Aug 2026

Reported derivative securities

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

AMG transaction Derivative

Stock Units

Award

Transaction value
Shares: +411
Change %
Price: $0.000000^*
Shares after: 411
Date: 30 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 411
Exercise price
Footnotes: F1

AMG transaction Derivative

Deferred Stock Units

Award

Transaction value
Shares: +210
Change %
Price: $0.000000^*
Shares after: 210
Date: 30 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 210
Exercise price
Footnotes: F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Each stock unit represents a right to receive one share of the Company's common stock upon vesting. The stock units vest in full on August 15, 2027.

Footnote F2

Reflects cash fees that the director has elected to defer under the Company's deferred compensation plan, which are notionally invested in a measurement fund tracking the Company's common stock during the deferral period. Each deferred stock unit is equal to one share of the Company's common stock, and becomes distributable in common stock upon the reporting person's separation from service as a member of the Board of Directors of the Company.