Affiliated Managers Group (NYSE: AMG) director reports new stock unit awards

Rhea-AI Filing Summary

Affiliated Managers Group director Tracy P. Palandjian reported equity compensation and related conversions. She received a grant of 335 stock units, which vest in full on March 5, 2027, with each unit representing the right to receive one share of common stock upon vesting.

She also exercised 867 stock units, resulting in ownership of 15,254 shares of common stock directly and 1,970 stock units, inclusive of previously reported deferred stock units. The filing notes that these transactions reflect the vesting of previously reported awards that vest from 2023 to 2027.

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^*

Palandjian Tracy P.

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/05/2026

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	03/05/2026		M		867	A	$0(1)	15,254	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
Stock Units	(1)	03/05/2026		M			867	(1)	(1)	Common Stock	867	$0	1,970(2)	D
Stock Units	(3)	03/05/2026		A		335		(3)	(3)	Common Stock	335	$0	335	D

Explanation of Responses:

1. Reflects the vesting of previously reported awards. Awards vest 2023-2027.

2. Inclusive of previously reported deferred stock units.

3. 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 March 5, 2027.

	/s/ Kavita Padiyar, Attorney-in-Fact	03/09/2026
	** 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).
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FAQ

What insider transactions did AMG director Tracy P. Palandjian report on this Form 4 for AMG?

Tracy P. Palandjian reported three acquisition-type transactions. She received a grant of 335 stock units and exercised 867 stock units, increasing her directly held common stock to 15,254 shares and stock units to 1,970, including previously reported deferred units.

How many Affiliated Managers Group (AMG) stock units were granted to Tracy P. Palandjian?

She was granted 335 stock units. According to the disclosure, each stock unit represents a right to receive one share of AMG common stock upon vesting, providing additional equity-based compensation tied directly to future delivery of shares.

When do the newly reported AMG stock units for Tracy P. Palandjian vest?

The filing states that the newly reported stock units vest in full on March 5, 2027. Earlier footnotes indicate the overall awards, including prior grants, vest over the 2023–2027 period, spreading delivery of shares over several years.

What does the Form 4 say about Tracy P. Palandjian’s AMG common stock holdings after these transactions?

After the reported transactions, she directly holds 15,254 shares of AMG common stock. In addition, she holds 1,970 stock units, which include previously reported deferred stock units that may convert into common shares upon vesting.

What is the nature of the 867 AMG stock units exercised by Tracy P. Palandjian?

The 867 stock units were reported with a transaction code for exercise or conversion of a derivative security. This reflects the vesting of previously reported awards, converting stock units into common stock at a stated price of $0.0000 per unit.

How do AMG stock units reported by Tracy P. Palandjian function economically for her?

Each AMG stock unit equals the right to receive one share of common stock when vested. This structure links her compensation to the company’s equity, with units delivering actual shares on vesting dates such as March 5, 2027.