Dava Ritchea - 05 Mar 2026 Form 4 Insider Report for AFFILIATED MANAGERS GROUP, INC. (AMG)

Reporting relationship: Chief Financial Officer
Issuer ticker: AMG
Reported as of: 05 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 09 Mar 2026, 18:02:36 UTC
Prior SEC filing: 07 Mar 2025
Source filing: View source filing
Reporting owner signature: /s/ Kavita Padiyar, Attorney-in-Fact

Key filing fact

Dava Ritchea filed Form 4 for AFFILIATED MANAGERS GROUP, INC. (AMG) on 09 Mar 2026.

Key facts

This page summarizes Dava Ritchea's Form 4 filing for AFFILIATED MANAGERS GROUP, INC. (AMG).
4 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 09 Mar 2026, 18:02.

Change

Previous filing in this sequence was filed on 07 Mar 2025.
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 0001840457 Primary reporting owner

RITCHEA DAVA

Relationship: Chief Financial Officer
Address: C/O AFFILIATED MANAGERS GROUP, INC., 777 SOUTH FLAGLER DRIVE, WEST PALM BEACH
Signature: /s/ Kavita Padiyar, Attorney-in-Fact
Signature date: 09 Mar 2026

Reported non-derivative transactions

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

AMG transaction

Common Stock

Options Exercise

Transaction value
Shares: +601
Change %
Price: $0.000000^*
Shares after: 601
Date: 05 Mar 2026
Ownership: Direct
Footnotes: F1

AMG transaction

Common Stock

Tax liability

Transaction value
Shares: -292
Change %: -49%
Price: $299.18^*
Shares after: 309
Date: 05 Mar 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

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

AMG transaction Derivative

Stock Units

Options Exercise

Transaction value
Shares: -601
Change %: -25%
Price: $0.000000^*
Shares after: 1,804
Date: 05 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 601
Exercise price
Footnotes: F1

AMG transaction Derivative

Stock Units

Award

Transaction value
Shares: +1,667
Change %
Price: $0.000000^*
Shares after: 1,667
Date: 05 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,667
Exercise price
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

Reflects the vesting of a previously reported award. Award vests 2026-2029.

Footnote F2

Reflects the automatic surrender of shares of common stock to the Company to satisfy tax withholding obligations related to the vesting of the award described above.

Footnote F3

The award, issued under the Company's 2020 Equity Incentive Plan, vests in four equal installments on each of March 5, 2027, 2028, 2029, and 2030.