[Form 4] Affiliated Managers Group Insider Trading Activity

Rhea-AI Filing Summary

Kavita Padiyar, General Counsel and Corporate Secretary of Affiliated Managers Group, Inc. (AMG), reported insider transactions dated 09/02/2025. The filing shows an acquisition of 47,731 shares (code M) at a price tied to $73.81 and a disposition of 30,991 shares (code F) at $229.97. After these transactions the report lists beneficial ownership totals of 73,431 shares and 42,440 shares in two reported non-derivative lines; a related employee stock option involving 47,731 underlying shares is also disclosed.

Insights

Corporate Governance Expert

TL;DR: Routine insider option exercise and share sale by the company’s General Counsel; disclosure aligns with Section 16 reporting obligations.

The Form 4 shows an option-related transaction (code M) resulting in acquisition of 47,731 common shares and a separate reported sale of 30,991 shares (code F). The reporting person is an officer (General Counsel & Corporate Secretary), and transactions are disclosed in line with Section 16 requirements. No additional contextual or explanatory information is provided in the filing.

Securities Analyst

TL;DR: Insider exercised options and sold shares on the same date; transactions are disclosed but the filing contains no operational or financial commentary.

The filing records exercise-related acquisition at a $73.81 exercise price and a separate disposal at $229.97. Table II notes an employee stock option tied to 47,731 shares. These are transaction-level disclosures only and do not provide financial performance metrics or forward guidance.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Padiyar Kavita

(Last) (First) (Middle)

C/O AFFILIATED MANAGERS GROUP, INC.

777 SOUTH FLAGLER DRIVE

(Street)

WEST PALM BEACH FL 33401

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
AFFILIATED MANAGERS GROUP, INC. [ AMG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	General Counsel & Corp. Sec.

3. Date of Earliest Transaction (Month/Day/Year)
09/02/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/02/2025		M		47,731	A	$73.81	73,431	D
Common Stock	09/02/2025		F		30,991	D	$229.97	42,440	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (Right to Buy)	$73.81	09/02/2025		M			47,731	03/03/2025	03/03/2027	Common Stock	47,731	$0	1,354	D

Explanation of Responses:

	/s/ Kavita Padiyar	09/04/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transactions did AMG (AMG) report for Kavita Padiyar on 09/02/2025?

The Form 4 reports an acquisition of 47,731 common shares (code M) and a disposition of 30,991 shares (code F), both dated 09/02/2025.

What is Kavita Padiyar’s role at Affiliated Managers Group (AMG)?

The filing identifies the reporting person as an Officer with the title General Counsel & Corporate Secretary.

What prices were reported for the AMG insider transactions on this Form 4?

The acquisition is associated with $73.81 and the disposition is shown at $229.97 in the filing.

Does the Form 4 disclose any derivative transactions for Kavita Padiyar?

Yes. Table II discloses an employee stock option with a conversion/exercise price of $73.81 related to 47,731 underlying shares.

What are the beneficial ownership totals shown after the transactions?

The filing lists beneficial ownership amounts of 73,431 and 42,440 shares on the two reported non-derivative lines; Table II also shows 1,354 derivative shares beneficially owned following reported transactions.