AMG CEO exercises 75K options, sells 17.5K shares

AFFILIATED MANAGERS GROUP, INC.

Accepted by SEC EDGAR 06/08/2026 - 07:23 PM EDT

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Form Type

Rhea-AI Filing Summary

AFFILIATED MANAGERS GROUP, INC. President and CEO Jay C. Horgen exercised employee stock options for 75,000 shares of common stock at a strike price of $74.49 per share. These options were labeled as an Employee Stock Option (Right to Buy) and are now fully exercised.

Of the acquired shares, 39,671 were used to satisfy tax obligations at a price of $336.62 per share, and 17,500 shares were sold in an open-market transaction at a weighted average price of $338.27 per share. Following these transactions, Horgen directly holds 204,706 common shares, with additional indirect holdings reported as 350,000 shares through grantor retained annuity trusts and 34,058 shares through family trusts.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 4 txns

Insider Horgen Jay C.

Role President and CEO

Sold 17,500 shs ($5.92M)

Approx. gross sale proceeds $5.92M

Approx. exercise cost $5.59M

Type	Security	Shares	Price	Value
Exercise	Employee Stock Option (Right to Buy)	75,000	$0.00	$0.00
Exercise	Common Stock	75,000	$74.49	$5.59M
Exercise Price or Tax Liability	Common Stock	39,671	$336.62	$13.35M
Sale	Common Stock	17,500	$338.27	$5.92M
Holding	Common Stock	--	--	--
Holding	Common Stock	--	--	--

Holdings After Transaction: Employee Stock Option (Right to Buy) — 0 contracts (Direct); Common Stock — 204,706 shares (Direct); Common Stock — 34,058 shares (Indirect, By Family Trusts); Common Stock — 350,000 shares (Indirect, By GRATs)

Footnotes (2)

F1. Reflects the transfer of 150,000 shares of common stock to a grantor retained annuity trust.
F2. The price reflects the weighted average sales price of the shares sold; the individual transaction prices ranged from $336.33 to $341.88. Specific transaction details will be provided to the SEC upon request.

Key Figures

Options exercised: 75,000 shares Option exercise price: $74.49/share Shares sold: 17,500 shares +5 more

8 metrics

Options exercised 75,000 shares Employee Stock Option (Right to Buy) exercised at $74.49

Option exercise price $74.49/share Exercise price for 75,000 common shares

Shares sold 17,500 shares Open-market sale of common stock on 2026-06-08

Sale price (weighted avg) $338.27/share Weighted average sales price; trades from $336.33 to $341.88

Tax-withheld shares 39,671 shares Shares delivered for tax liability at $336.62/share

Direct holdings after 204,706 shares Common stock directly held following reported transactions

GRAT holdings 350,000 shares Common stock held indirectly by grantor retained annuity trusts

Family trust holdings 34,058 shares Common stock held indirectly by family trusts

Key Terms

Employee Stock Option (Right to Buy), grantor retained annuity trust, weighted average sales price, tax-withholding disposition, +1 more

5 terms

Employee Stock Option (Right to Buy) financial

"security_title": "Employee Stock Option (Right to Buy)""

grantor retained annuity trust financial

"Reflects the transfer of 150,000 shares of common stock to a grantor retained annuity trust."

A grantor retained annuity trust (GRAT) is an estate-planning tool where the person who creates the trust transfers assets into it but receives fixed cash payments (an annuity) from the trust for a set number of years; whatever remains after that term passes to designated beneficiaries. It matters to investors because it can shift future appreciation of assets out of the creator’s taxable estate—like putting an asset into a timed vending machine that pays you fixed amounts while any extra value that grows inside the machine goes to heirs with reduced gift or estate tax consequences.

weighted average sales price financial

"The price reflects the weighted average sales price of the shares sold; the individual transaction prices ranged"

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

indirect ownership financial

"ownership_type": "indirect", "nature_of_ownership": "By GRATs""

FAQ

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

What did AMG CEO Jay C. Horgen do in this Form 4 filing?

Jay C. Horgen exercised options for 75,000 AMG common shares at $74.49 each, then had 39,671 shares withheld for taxes and sold 17,500 shares at a weighted average of $338.27 per share, while retaining a substantial direct and indirect share position.

How many AMG shares did Jay C. Horgen sell in this transaction?

He sold 17,500 AMG common shares in an open-market transaction at a weighted average price of $338.27 per share. The filing notes individual sale prices ranged from $336.33 to $341.88, with full transaction details available to the SEC upon request.

How many AMG options did Jay C. Horgen exercise and at what price?

He exercised employee stock options covering 75,000 AMG common shares at an exercise price of $74.49 per share. The related option position, labeled as an Employee Stock Option (Right to Buy), shows zero remaining derivative shares following this exercise in the filing data.

How many AMG shares does Jay C. Horgen hold after these transactions?

After the reported transactions, he directly holds 204,706 AMG common shares. The filing also reports indirect holdings of 350,000 shares held by grantor retained annuity trusts and 34,058 shares held by family trusts, reflecting additional positions associated with him through these entities.

What portion of Jay C. Horgen’s AMG shares were used for tax withholding?

The filing shows a tax-withholding disposition of 39,671 AMG common shares at $336.62 per share. This F-code transaction represents shares withheld to cover tax obligations related to the option exercise, rather than an open-market sale initiated for investment reasons.

What does the transfer to a grantor retained annuity trust mean for AMG shares?

A footnote explains a transfer of 150,000 AMG common shares to a grantor retained annuity trust. This reflects movement of shares into an estate-planning vehicle, with 350,000 shares now reported as indirectly held through such trusts, rather than a traditional market purchase or sale.

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

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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^*

Horgen Jay C.

(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
X	Officer (give title below)	Other (specify below)
	President and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/08/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/08/2026		M		75,000	A	$74.49	261,877⁽¹⁾	D
Common Stock	06/08/2026		F		39,671	D	$336.62	222,206	D
Common Stock	06/08/2026		S		17,500	D	$338.27⁽²⁾	204,706	D
Common Stock								34,058	I	By Family Trusts
Common Stock								350,000⁽¹⁾	I	By GRATs

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Employee Stock Option (Right to Buy)	$74.49	06/08/2026		M			75,000	08/15/2024	08/15/2026	Common Stock	75,000	$0	0	D

Explanation of Responses:

1. Reflects the transfer of 150,000 shares of common stock to a grantor retained annuity trust.

2. The price reflects the weighted average sales price of the shares sold; the individual transaction prices ranged from $336.33 to $341.88. Specific transaction details will be provided to the SEC upon request.

	/s/ Kavita Padiyar, Attorney-in-Fact	06/08/2026
	** 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)

Source: View Original Filing on SEC EDGAR