Director at Affiliated Managers (NYSE: AMG) sells 3,402 shares

Rhea-AI Filing Summary

Affiliated Managers Group director Ryan David Christopher sold shares in the company. On May 6, 2026, he completed an open-market sale of 3,402 shares of common stock at a weighted average price of $305.06 per share, with trades ranging from $303.54 to $307.71. After these transactions, he directly owned 1,092 shares.

Insider Trade Summary

Net Seller: 3,402 shares ($1,037,814)

Net Sell 1 txn

Insider Ryan David Christopher

Role null

Sold 3,402 shs ($1.04M)

Type	Security	Shares	Price	Value
Sale	Common Stock	3,402	$305.06	$1.04M

Holdings After Transaction: Common Stock — 1,092 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold: 3,402 shares Weighted average sale price: $305.06 per share Price range: $303.54–$307.71 per share +1 more

4 metrics

Shares sold 3,402 shares Open-market sale of common stock on May 6, 2026

Weighted average sale price $305.06 per share Price for 3,402 shares sold on May 6, 2026

Price range $303.54–$307.71 per share Range of individual trade prices in the reported sale

Shares owned after sale 1,092 shares Total common stock directly held following the transaction

Key Terms

Form 4, open-market sale, weighted average sales price, beneficially owned

4 terms

Form 4 regulatory

"reported on a Form 4 insider trading report filed with the SEC"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

open-market sale financial

"he completed an open-market sale of 3,402 shares of common stock"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average sales price financial

"reported an open-market sale at a weighted average sales price of $305.06"

beneficially owned financial

"total shares beneficially owned after the open-market sale"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Form 4 Insider Transactions: What Each Field Means →

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^*

Ryan David Christopher

(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)
05/06/2026

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	05/06/2026		S		3,402	D	$305.06(1)	1,092	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

Explanation of Responses:

1. The sale reflects the weighted average sales price of the shares sold; the individual transaction prices ranged from $303.54 to $307.71. Specific transaction details will be provided to the SEC upon request.

	/s/ Kavita Padiyar, Attorney-in-Fact	05/08/2026
	** 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)

FAQ

What insider transaction did AMG director Ryan David Christopher report?

Ryan David Christopher reported an open-market sale of 3,402 shares of Affiliated Managers Group common stock. The sale occurred on May 6, 2026, and was disclosed on a Form 4 insider trading report filed with the SEC.

At what price did AMG shares sell in Ryan David Christopher’s Form 4 filing?

The reported sale used a weighted average price of $305.06 per share. Individual transaction prices for the 3,402 shares of Affiliated Managers Group common stock ranged from $303.54 to $307.71, according to the filing’s footnote disclosure.

How many AMG shares does Ryan David Christopher hold after this Form 4 sale?

Following the reported transaction, Ryan David Christopher directly holds 1,092 shares of Affiliated Managers Group common stock. This post-transaction balance is disclosed in the Form 4 as the total shares beneficially owned after the open-market sale.

What type of transaction was reported in the AMG Form 4 for Ryan David Christopher?

The filing describes the transaction as an open-market sale of common stock. It is coded as an “S” transaction on the Form 4, indicating a sale in the open market or a private transaction by the reporting person.

Does the AMG Form 4 footnote provide detail on the sale price range?

Yes. The footnote explains that the reported $305.06 figure is a weighted average sales price. It states that individual trades for the 3,402 shares occurred at prices between $303.54 and $307.71, with full details available to the SEC upon request.