Holly Horn files Form 144 to sell AGO shares

Holly Horn submitted a Form 144 reporting proposed sales of company common stock of AGO.

Rhea-AI Filing Summary

Holly Horn submitted a Form 144 reporting proposed sales of company common stock of AGO. The filing lists 499,967 shares alongside a 06/16/2026 sale of 6,493 shares to Assured Guaranty Ltd, and identifies Merrill Lynch as the broker.

Insights

Securities Compliance Analyst

Form 144 notice shows proposed resale activity by an affiliate using a brokered transaction.

Form 144s are notices of proposed sales by holders subject to resale rules; this filing lists broker details (Merrill Lynch) and counterparty information (Assured Guaranty Ltd) for a listed trade on 06/16/2026.

Cash‑flow treatment and whether the brokered sales completed are not stated; subsequent SEC filings or broker records would confirm final execution.

Key Figures

Listed shares: 499,967 shares Recent sale: 6,493 shares Broker listed: 500,000 (field value) +1 more

4 metrics

Listed shares 499,967 shares line entry in the Form 144 excerpt

Recent sale 6,493 shares sale dated <date> 06/16/2026 to Assured Guaranty Ltd

Broker listed 500,000 (field value) numeric field appearing near broker/group data in excerpt

Multiple stock bonus entries examples: 641, 630, 472 shares historic 'STOCK BONUS' entries with dates in the excerpt

Key Terms

Form 144, Stock Bonus, Broker

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Bonus financial

"STOCK BONUS | HOLLY HORN | 02/24/2019 | 641"

Broker market

"MERRILL LYNCH 2 BALA PLAZA, SUITE 601 BALA CYNWYD PA"

A broker is a licensed professional or firm that helps investors buy and sell financial assets by executing trades on their behalf, acting like a marketplace agent or matchmaker between buyers and sellers. Brokers matter to investors because they provide access to markets, handle order execution and paperwork, and can offer research or advice—services that affect trade speed, costs, and the quality of investment decisions.

FAQ

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

What does Holly Horn’s Form 144 for AGO mean?

It notifies the SEC of a proposed resale of AGO common stock by Holly Horn. The form lists broker details and the amounts being offered or recently sold, including 6,493 shares sold on 06/16/2026.

How many AGO shares are listed in the filing?

The filing shows 499,967 shares in the recorded line and a recent sale of 6,493 shares on 06/16/2026. These figures appear in the Form 144 excerpt provided.

Who is the broker or intermediary named in the Form 144?

The brokerage listed is Merrill Lynch at the Bala Cynwyd, PA address. The form identifies the broker in the securities‑to‑be‑sold section of the excerpt.

Was a counterparty identified in the recent sale?

Yes; the excerpt lists Assured Guaranty Ltd as the counterparty for the 06/16/2026 entry involving 6,493 shares.

Does Form 144 confirm the sale completed?

Form 144 is a notice of proposed sale; it does not by itself confirm final settlement. Completion status and cash flows are not stated in the provided excerpt.

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

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Accepted by SEC EDGAR 06/23/2026 - 03:34 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001908759
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ASSURED GUARANTY LTD
SEC File Number
Address of Issuer	30 WOODBOURNE AVE 5TH FLOOR HAMILTON BERMUDA HM08
Phone	4412795700
Name of Person for Whose Account the Securities are To Be Sold	HOLLY HORN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	senior advisor to CEO

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	MERRILL LYNCH 2 BALA PLAZA, SUITE 601 BALA CYNWYD PA 19004	6446	500000	44282464	06/23/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
COMMON	02/21/2022	STOCK BONUS	HOLLY HORN			341	02/21/2022	CASH
COMMON	02/27/2021	STOCK BONUS	HOLLY HORN			467	02/27/2021	CASH
COMMON	02/22/2020	STOCK BONUS	HOLLY HORN			375	02/22/2020	CASH
COMMON	02/21/2020	STOCK BONUS	HOLLY HORN			465	02/21/2020	CASH
COMMON	02/22/2021	STOCK BONUS	HOLLY HORN			409	02/22/2021	CASH
COMMON	02/21/2021	STOCK BONUS	HOLLY HORN			465	02/21/2021	CASH
COMMON	02/24/2020	STOCK BONUS	HOLLY HORN			630	02/24/2020	CASH
COMMON	02/27/2020	STOCK BONUS	HOLLY HORN			472	02/27/2020	CASH
COMMON	02/24/2019	STOCK BONUS	HOLLY HORN			641	02/24/2019	CASH
COMMON	02/22/2019	STOCK BONUS	HOLLY HORN			416	02/26/2024	CASH
COMMON	02/21/2019	STOCK BONUS	HOLLY HORN			465	02/21/2019	CASH
COMMON	02/24/2017	STOCK BONUS	HOLLY HORN			610	02/24/2017	CASH
COMMON	02/07/2017	STOCK BONUS	HOLLY HORN			314	02/07/2017	CASH
COMMON	02/04/2019	STOCK BONUS	HOLLY HORN			376	02/04/2019	CASH

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
HOLLY HORN 11920 LATIGO LN OAKTON VA 22124	ASSURED GUARANTY LTD	06/16/2026	6493	499967

144: Remarks and Signature

Remarks
Date of Notice	06/23/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	HOLLY HORN
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)