AMG director gains 848 shares from stock vesting

For AFFILIATED MANAGERS GROUP, INC.

Rhea-AI Filing Summary

For AFFILIATED MANAGERS GROUP, INC. (AMG), director Tracy P. Palandjian reported the vesting and conversion of 848 Stock Units into 848 shares of Common Stock on 2026-08-15. The stock units disposition reflects vesting of previously reported awards that vest from 2023–2027, and following these transactions Palandjian directly held 1,731 Stock Units and 18,375 shares of Common Stock, inclusive of previously reported deferred stock units. The transactions were reported at a price of $0.00 per share, indicating a compensation-related award rather than an open-market trade.

Insider Trade Summary

848 shares exercised/converted

Exercise 2 txns

Insider Palandjian Tracy P.

Role Director

Type	Security	Shares	Price	Value
Exercise	Stock Units F1, F2	848	$0.00	$0.00
Exercise	Common Stock F1	848	$0.00	$0.00

Holdings After Transaction: Stock Units — 1,731 contracts (Direct); Common Stock — 18,375 shares (Direct)

Footnotes (2)

1. F1. Reflects the vesting of previously reported awards. Awards vest 2023-2027.
2. F2. Inclusive of previously reported deferred stock units.

Key Figures

Stock Units Exercised/Converted: 848 Stock Units Common Stock Acquired via Conversion: 848 shares Stock Units Held After Transaction: 1,731 units +2 more

5 metrics

Stock Units Exercised/Converted 848 Stock Units Vesting and conversion into Common Stock on 2026-08-15

Common Stock Acquired via Conversion 848 shares Shares of AMG Common Stock received upon stock unit vesting on 2026-08-15

Stock Units Held After Transaction 1,731 units Direct holdings of Stock Units following the reported vesting

Common Shares Held After Transaction 18,375 shares Direct AMG Common Stock holdings after conversion of stock units

Reported Transaction Price 0.0000 per share Price for both derivative and non-derivative transactions on 2026-08-15

Key Terms

Stock Units, deferred stock units, Exercise or conversion of derivative security

3 terms

Stock Units financial

"The security title is listed as "Stock Units" in the derivative transaction."

Stock units are individual pieces of ownership in a company, like slices of a pie that together make up the whole business. They matter to investors because each unit represents a claim on the company’s assets, profits and sometimes voting power, and changes in the number or value of these units affect ownership percentages, potential dividends and share dilution — all of which influence an investment’s worth.

deferred stock units financial

"A footnote states: "Inclusive of previously reported deferred stock units.""

Deferred stock units are promises from a company to give an employee shares of stock at a future date, often after certain conditions are met or after leaving the company. They function like a form of delayed compensation, allowing employees to earn shares over time. For investors, they represent potential future ownership in the company, but do not provide immediate voting rights or dividends until the shares are actually received.

Exercise or conversion of derivative security financial

"The transaction code description is "Exercise or conversion of derivative security"."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider equity transactions did AMG director Tracy P. Palandjian report?

Palandjian reported 848 Stock Units vesting and converting into 848 shares of AMG Common Stock on 2026-08-15. These were previously reported awards vesting over 2023–2027, with no open-market purchase or sale involved.

How many AMG Common Stock shares does Tracy P. Palandjian hold after this Form 4?

After the reported transactions, Palandjian directly held 18,375 shares of AMG Common Stock. This reflects the addition of 848 shares from the vesting and conversion of stock unit awards on 2026-08-15.

What happened to Tracy P. Palandjian’s AMG Stock Units in this filing?

Palandjian had 848 Stock Units convert into Common Stock, reducing her Stock Unit balance to 1,731 units. The filing notes these reflect vesting of previously reported awards that vest between 2023 and 2027.

Were AMG shares bought or sold on the market in Palandjian’s latest Form 4?

No market purchases or sales were reported. The Form 4 shows stock unit vesting and conversion at a stated price of $0.00 per share, consistent with equity compensation rather than open-market trading.

Does the Form 4 indicate pre-planned trading under Rule 10b5-1 for AMG (AMG)?

The Rule 10b5-1 checkbox is not marked as a plan transaction for these entries. The filing instead describes routine vesting of previously reported stock unit awards with no reference to a trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/18/2026 - 05:02 PM Accepted by SEC EDGAR 08/18/2026 - 05:01 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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.

1001 U.S. HIGHWAY ONE NORTH

(Street)

JUPITER FLORIDA 33477

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/15/2026

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

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

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

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	08/15/2026		M		848	A	$0(1)	18,375	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)	08/15/2026		M			848	(1)	(1)	Common Stock	848	$0	1,731(2)	D

Explanation of Responses:

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

2. Inclusive of previously reported deferred stock units.

	/s/ Kavita Padiyar, Attorney-in-Fact	08/18/2026
	** 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).
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.
* Form 4: SEC 1474 (03-26)