Equity awards and tax withholding for Assured Guaranty (NYSE: AGO) officer

Rhea-AI Filing Summary

Assured Guaranty Ltd’s Chief Surveillance Officer, Holly Horn, reported a mix of equity awards and related tax share withholdings in Common Shares. On February 20, 2026, she acquired 10,328 shares in a grant/award transaction, increasing her holdings to 48,346 shares. On February 22, 2026, she received an additional 5,822 share award, bringing her ownership to 52,603 shares. On the same date, the company withheld 1,565 shares and 2,347 shares at $88.39 per share to cover tax liabilities, leaving her with 50,256 Common Shares held directly. Footnotes explain that the awards consist of restricted share units under the 2024 Long-Term Incentive Plan and performance share units that vest over time based on stated targets.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Horn Holly

Role Chief Surveillance Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Shares	1,565	$88.39	$138K
Grant/Award	Common Shares	5,822	$0.00	--
Tax Withholding	Common Shares	2,347	$88.39	$207K
Grant/Award	Common Shares	10,328	$0.00	--

Holdings After Transaction: Common Shares — 46,781 shares (Direct)

Footnotes (1)

1. Restricted share units awarded pursuant to the Assured Guaranty Ltd. 2024 Long-Term Incentive Plan. The restricted share units vest as follows: 1/3 on the first anniversary date of the award, 1/3 on the second anniversary date of the award and 1/3 on the third anniversary date of the award. Upon vesting, one Common Share will be delivered for each vested restricted share unit. Common Shares being withheld to pay tax liability. Represents the vesting of performance share units based on the achievement of core adjusted book value targets.

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^*

Horn Holly

(Last) (First) (Middle)

30 WOODBOURNE AVENUE

5TH FLOOR

(Street)

HAMILTON D0 HM 08

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ASSURED GUARANTY LTD [ AGO ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/20/2026

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 Shares	02/20/2026		A		10,328	A	$0(1)	48,346	D
Common Shares	02/22/2026		F		1,565(2)	D	$88.39	46,781	D
Common Shares	02/22/2026		A		5,822(3)	A	$0	52,603	D
Common Shares	02/22/2026		F		2,347(2)	D	$88.39	50,256	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. Restricted share units awarded pursuant to the Assured Guaranty Ltd. 2024 Long-Term Incentive Plan. The restricted share units vest as follows: 1/3 on the first anniversary date of the award, 1/3 on the second anniversary date of the award and 1/3 on the third anniversary date of the award. Upon vesting, one Common Share will be delivered for each vested restricted share unit.

2. Common Shares being withheld to pay tax liability.

3. Represents the vesting of performance share units based on the achievement of core adjusted book value targets.

Remarks:

	/s/ Ling Chow, Attorney-in-fact	02/24/2026
	** 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.

FAQ

What insider transactions did AGO’s Holly Horn report on this Form 4?

Holly Horn reported equity awards and tax-related share withholdings in Assured Guaranty Ltd Common Shares. She received two share grants totaling 16,150 shares and had 3,912 shares withheld to satisfy tax obligations, ending with 50,256 directly owned shares after these transactions.

Were Holly Horn’s AGO transactions open-market buys or sales?

The reported AGO transactions were not open-market buys or sales. They involved share grants and awards, plus shares withheld to pay tax liabilities. Transaction codes A and F indicate equity compensation and tax-withholding dispositions rather than discretionary market trading activity.

How many AGO shares did Holly Horn acquire through grants and awards?

Holly Horn acquired 10,328 Common Shares on February 20, 2026, and 5,822 Common Shares on February 22, 2026, through grant or award transactions. These awards reflect restricted and performance share units that convert into Common Shares upon vesting, according to the company’s long-term incentive plan.

How many AGO shares were withheld to cover Holly Horn’s tax liabilities?

Assured Guaranty Ltd withheld 1,565 Common Shares and 2,347 Common Shares from Holly Horn on February 22, 2026. The shares were valued at $88.39 each for tax purposes, with footnotes clarifying they were specifically retained to satisfy her tax obligations on vested equity awards.

What is Holly Horn’s AGO share ownership after these Form 4 transactions?

After completing the reported grants and tax withholdings, Holly Horn directly owns 50,256 Assured Guaranty Ltd Common Shares. The total reflects the net effect of equity awards increasing her holdings and shares withheld at $88.39 per share to meet related tax liabilities.

How do Holly Horn’s AGO restricted and performance units vest over time?

Restricted share units awarded under Assured Guaranty Ltd’s 2024 Long-Term Incentive Plan vest in three equal installments on the first, second, and third anniversaries of the award. Performance share units vest based on achieving core adjusted book value targets, then deliver one Common Share per vested unit.