SEC ownership of ASSURED GUARANTY LTD

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001273813.

Top shareholders Insider holders Latest transactions

CIK: 0001273813
Symbol: AGO on NYSE
Location: Hamilton Bermuda, Bermuda
Parsed ownership evidence: 13F, 13D/G, and 3/4/5
Lead holder: BlackRock, Inc.
13D/G signal: BlackRock, Inc.
Latest evidence date: 28 May 2026

Ownership snapshot

Top shareholders of ASSURED GUARANTY LTD (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Lead holder

BlackRock, Inc.

13D/G signal

BlackRock, Inc.

Evidence rows

Latest as of

28 May 2026

13F 13D/G 3/4/5 Lead comparable stake: 11% 13D/G row: BlackRock, Inc. Showing first 8 of 50 holder rows. Open remaining rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	11% from 13D/G	$470,992,116 5,780,463 shares	—	31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC	13D/G 13F Vanguard Portfolio Management · Company 13D/G 13F	8.8%	$322,079,848 3,952,870 shares	$0	31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC	13D/G 13F Vanguard Capital Management · Company 13D/G 13F	5.1%	$187,218,292 2,297,718 shares	$0	31 Mar 2026
WELLINGTON MANAGEMENT GROUP LLP	13D/G 13F Company 13D/G 13F	1.3%	$55,160,588 613,782 shares	-$210,219,410	31 Dec 2025
FRANKLIN RESOURCES INC	13D/G 13F Company 13D/G 13F	1%	$43,382,436 488,651 shares	$0	30 Sep 2024
Dominic Frederico	3/4/5 President/CEO/Deputy Chairman, Director 3/4/5	3.7%	$134,676,255 1,652,875 shares	-$6,159,249	01 May 2026
Robert Bailenson	3/4/5 Chief Operating Officer 3/4/5	0.57%	$20,197,710 256,251 shares	-$7,191,165	11 May 2026
Ling Chow	3/4/5 General Counsel and Secretary 3/4/5	0.44%	$15,935,043 195,570 shares	—	01 May 2026

Show 42 additional holder rows in the full holder list

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Francisco L. Borges	3/4/5 Director 3/4/5	0.4%	$14,654,829 179,858 shares	-$9,927,225	28 May 2026
Stephen Donnarumma	3/4/5 Chief Credit Officer 3/4/5	0.27%	$9,866,660 121,093 shares	—	01 May 2026
Alan J. Kreczko	3/4/5 Director 3/4/5	0.16%	$5,707,429 70,047 shares	—	30 Apr 2026
Benjamin G. Rosenblum	3/4/5 CFO 3/4/5	0.14%	$5,100,973 62,604 shares	—	01 May 2026
Holly Horn	3/4/5 Chief Surveillance Officer 3/4/5	0.12%	$4,283,077 52,566 shares	—	01 May 2026
Bonnie L. Howard	3/4/5 Director 3/4/5	0.11%	$3,862,233 47,401 shares	—	30 Apr 2026
Thomas W. Jones	3/4/5 Director 3/4/5	0.11%	$3,854,411 47,305 shares	—	30 Apr 2026
Jorge A. Gana	3/4/5 Chief Risk Officer 3/4/5	0.07%	$2,514,574 29,545 shares	—	23 Feb 2026
Laura Bieling	3/4/5 Chief Accounting Officer 3/4/5	0.03%	$1,271,883 14,944 shares	—	23 Feb 2026
Yukiko Omura	3/4/5 Director 3/4/5	0.03%	$915,835 11,240 shares	—	30 Apr 2026
Courtney C. Shea	3/4/5 Director 3/4/5	0.02%	$875,991 10,751 shares	—	30 Apr 2026
Lorin Radtke	3/4/5 Director 3/4/5	0.02%	$843,643 10,354 shares	-$106,224	30 Apr 2026
Antonio Ursano Jr.	3/4/5 Director 3/4/5	0.01%	$455,065 5,585 shares	—	30 Apr 2026
Mark Batten	3/4/5 Director 3/4/5	0.01%	$421,577 5,174 shares	—	30 Apr 2026
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	6.7%	$245,394,330 3,011,751 shares	—	31 Mar 2026
River Road Asset Management, LLC	13F Company 13F	4.2%	$154,109,479 1,891,378 shares	—	31 Mar 2026
STATE STREET CORP	13F Company 13F	3.5%	$128,105,789 1,572,236 shares	—	31 Mar 2026
FIRST TRUST ADVISORS LP	13F Company 13F	3%	$110,538,619 1,356,635 shares	—	31 Mar 2026
AMERICAN CENTURY COMPANIES INC	13F Company 13F	2.9%	$107,238,191 1,316,129 shares	—	31 Mar 2026
REINHART PARTNERS, LLC.	13F Company 13F	2.9%	$104,880,088 1,287,173 shares	—	31 Mar 2026
ROYCE & ASSOCIATES LP	13F Company 13F	2.2%	$80,025,338 982,147 shares	—	31 Mar 2026
AQR CAPITAL MANAGEMENT LLC	13F Company 13F	1.9%	$69,816,117 860,440 shares	—	31 Mar 2026
FULLER & THALER ASSET MANAGEMENT, INC.	13F Company 13F	1.9%	$69,229,732 849,653 shares	—	31 Mar 2026
PRINCIPAL FINANCIAL GROUP INC	13F Company 13F	1.7%	$63,601,600 780,573 shares	—	31 Mar 2026
GEODE CAPITAL MANAGEMENT, LLC	13F Company 13F	1.6%	$59,849,916 734,344 shares	—	31 Mar 2026
Boston Partners	13F Company 13F	1.3%	$46,888,410 575,890 shares	—	31 Mar 2026
GOLDMAN SACHS GROUP INC	13F Company 13F	1.3%	$46,553,599 571,350 shares	—	31 Mar 2026
MORGAN STANLEY	13F Company 13F	1.3%	$46,444,835 570,014 shares	—	31 Mar 2026
TWO SIGMA INVESTMENTS, LP	13F Company 13F	1.2%	$42,645,084 523,381 shares	—	31 Mar 2026
Quantinno Capital Management LP	13F Company 13F	1.1%	$40,686,822 499,347 shares	—	31 Mar 2026
NORTHERN TRUST CORP	13F Company 13F	1%	$36,526,996 448,294 shares	—	31 Mar 2026
RAYMOND JAMES FINANCIAL INC	13F Company 13F	0.93%	$33,719,689 416,019 shares	—	31 Mar 2026
BROWN ADVISORY INC	13F Company 13F	0.9%	$32,994,034 404,935 shares	—	31 Mar 2026
Long Focus Capital Management, LLC	13F Company 13F	0.85%	$30,962,400 380,000 shares	—	31 Mar 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F Company 13F	0.81%	$29,695,712 364,454 shares	—	31 Mar 2026
BANK OF AMERICA CORP /DE/	13F Company 13F	0.8%	$29,316,484 359,800 shares	—	31 Mar 2026
Qube Research & Technologies Ltd	13F Company 13F	0.74%	$27,082,322 332,380 shares	—	31 Mar 2026
Bank of New York Mellon Corp	13F Company 13F	0.66%	$24,297,549 298,203 shares	—	31 Mar 2026
Gotham Asset Management, LLC	13F Company 13F	0.61%	$22,193,767 272,383 shares	—	31 Mar 2026
VANGUARD FIDUCIARY TRUST CO	13F Company 13F	0.6%	$21,966,438 269,593 shares	—	31 Mar 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	13F Company 13F	0.57%	$20,734,297 254,471 shares	—	31 Mar 2026
Jeffrey L. Gendell	13F Individual 13F	0.55%	$19,996,984 245,422 shares	—	31 Mar 2026

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$23,383,863.

Buys

Insiders: 0

Sells

$23,383,863

Insiders: 4

Net

-$23,383,863

Shares: -289,969

Window

Last 12 months

4 rolling buckets

Buy value Sell value

Shares: 0 Shares: 289,969

Window (months)	Sell shares	Buy $	Sell $	Net $
0-3	224,969	$0	$18,027,713	-$18,027,713
3-6	0	$0	$0	$0
6-9	25,000	$0	$2,095,750	-$2,095,750
9-12	40,000	$0	$3,260,400	-$3,260,400

Reporting owners

Insider holders from Forms 3/4/5

Current reporting-owner rows connected to ASSURED GUARANTY LTD. Open the relationship link for the CIK-to-CIK filing trail.

Rows

Lead holder

Dominic Frederico

Net 12M change

-$23,383,863

Latest report

28 May 2026

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Dominic Frederico	President/CEO/Deputy Chairman, Director	$134,676,255	-$6,159,249	-4.4%	Median	01 May 2026
Robert Bailenson	Chief Operating Officer	$20,197,710	-$7,191,165	-26%	Filing P/S	11 May 2026
Ling Chow	General Counsel and Secretary	$15,935,043			Median	01 May 2026
Russell B. Brewer II	Chief Surveillance Officer	$15,495,306			Mixed	18 May 2021
Francisco L. Borges	Director	$14,654,829	-$9,927,225	-40%	Median	28 May 2026
Stephen Donnarumma	Chief Credit Officer	$9,866,660			Median	01 May 2026
David A. Buzen	Head of Asset Management*	$9,648,588			Mixed	27 Feb 2023
Patrick W. Kenny	Director	$5,902,107			Mixed	01 May 2024
Alan J. Kreczko	Director	$5,707,429			Median	30 Apr 2026
Benjamin G. Rosenblum	Cfo	$5,100,973			Median	01 May 2026
Michael T. O Kane	Director	$4,835,561			Mixed	03 May 2022
Holly Horn	Chief Surveillance Officer	$4,283,077			Median	01 May 2026
Howard Albert	Chief Risk Officer	$4,200,812			Mixed	01 Dec 2022
Bonnie L. Howard	Director	$3,862,233			Median	30 Apr 2026
Thomas W. Jones	Director	$3,854,411			Median	30 Apr 2026
G. Lawrence Buhl	Director	$3,305,522			Mixed	01 May 2024
Jorge A. Gana	Chief Risk Officer	$2,514,574			Mixed	23 Feb 2026
Simon W. Leathes	Director	$2,010,543			Mixed	01 May 2024
Laura Bieling	Chief Accounting Officer	$1,271,883			Mixed	23 Feb 2026
Yukiko Omura	Director	$915,835			Median	30 Apr 2026
Courtney C. Shea	Director	$875,991			Median	30 Apr 2026
Lorin Radtke	Director	$843,643	-$106,224	-11%	Median	30 Apr 2026
Antonio Ursano Jr.	Director	$455,065			Median	30 Apr 2026
Mark Batten	Director	$421,577			Median	30 Apr 2026
Michelle McCloskey	Director	$372,120			Mixed	03 May 2022

Recent Insider Transactions by Companies or Individuals for ASSURED GUARANTY LTD

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Reported value	Reported price	Shares	Shares owned	Date	Ownership
Francisco L. Borges	AGO	Common Shares	Gift	-0.04%			-74	179,858	28 May 2026	Direct
Francisco L. Borges	AGO	Common Shares	Gift	-0.24%			-427	179,932	21 May 2026	Direct
Robert Bailenson	AGO	Common Shares	Sale	-16.3%	$3,930,765	$78.62	-50,000	256,251	11 May 2026	Direct
Dominic Frederico	AGO	Common Shares	Award	2.69%			33,980	1,298,275	01 May 2026	Direct
Robert Bailenson	AGO	Common Shares	Award	2.62%			7,806	306,251	01 May 2026	Direct
Stephen Donnarumma	AGO	Common Shares	Award	2.97%			3,490	121,093	01 May 2026	Direct
Holly Horn	AGO	Common Shares	Award	5.53%			2,755	52,566	01 May 2026	Direct
Ling Chow	AGO	Common Shares	Award	3.15%			5,970	195,570	01 May 2026	Direct
Benjamin G. Rosenblum	AGO	Common Shares	Tax liability	-1.01%			-637	62,604	01 May 2026	Direct
Alan J. Kreczko	AGO	Common Shares	Award	5.95%			3,936	70,047	01 May 2026	Direct
Mark Batten	AGO	Common Shares	Award	76.4%			2,240	5,174	01 May 2026	Direct
Francisco L. Borges	AGO	Common Shares	Award	3.4%			5,934	180,359	01 May 2026	Direct
Bonnie L. Howard	AGO	Common Shares	Award	3.85%			1,756	47,401	01 May 2026	Direct
Thomas W. Jones	AGO	Common Shares	Award	3.86%			1,756	47,305	01 May 2026	Direct
Courtney C. Shea	AGO	Common Shares	Award	19.5%			1,756	10,751	01 May 2026	Direct
Lorin Radtke	AGO	Common Shares	Award	30.5%			2,422	10,354	01 May 2026	Direct
Yukiko Omura	AGO	Common Shares	Award	18.5%			1,756	11,240	01 May 2026	Direct
Antonio Ursano Jr.	AGO	Common Shares	Award	45.9%			1,756	5,585	01 May 2026	Direct
Alan J. Kreczko	AGO	Common Shares	Tax liability	-0.94%			-626	66,111	30 Apr 2026	Direct
Mark Batten	AGO	Common Shares	Tax liability	-24.7%			-961	2,934	30 Apr 2026	Direct
Francisco L. Borges	AGO	Common Shares	Tax liability	-0.73%			-1,277	174,425	30 Apr 2026	Direct
Bonnie L. Howard	AGO	Common Shares	Tax liability	-0.79%			-365	45,645	30 Apr 2026	Direct
Thomas W. Jones	AGO	Common Shares	Tax liability	-0.79%			-365	45,549	30 Apr 2026	Direct
Courtney C. Shea	AGO	Common Shares	Tax liability	-3.9%			-365	8,995	30 Apr 2026	Direct
Lorin Radtke	AGO	Common Shares	Tax liability	-4.4%			-365	7,932	30 Apr 2026	Direct
Yukiko Omura	AGO	Common Shares	Tax liability	-7.31%			-748	9,484	30 Apr 2026	Direct
Antonio Ursano Jr.	AGO	Common Shares	Tax liability	-8.7%			-365	3,829	30 Apr 2026	Direct
Francisco L. Borges	AGO	Common Shares	Gift	-0.71%			-1,250	175,702	30 Mar 2026	Direct
Francisco L. Borges	AGO	Common Shares	Sale	-41.2%	$9,927,225	$80.22	-123,750	176,952	30 Mar 2026	Direct
Dominic Frederico	AGO	Common Shares	Sale	-2.32%	$2,442,137	$81.41	-29,998	1,264,295	23 Mar 2026	Direct
Dominic Frederico	AGO	Common Shares	Sale	-1.52%	$1,621,362	$81.06	-20,002	1,294,293	20 Mar 2026	Direct
Lorin Radtke	AGO	Common Shares	Sale	-12.8%	$106,224	$87.14	-1,219	8,297	04 Mar 2026	Direct
Laura Bieling	AGO	Common Shares	Tax liability	-2.71%			-416	14,944	23 Feb 2026	Direct
Holly Horn	AGO	Common Shares	Tax liability	-0.89%			-445	49,811	23 Feb 2026	Direct
Benjamin G. Rosenblum	AGO	Common Shares	Tax liability	-1.89%			-1,220	63,241	23 Feb 2026	Direct
Stephen Donnarumma	AGO	Common Shares	Tax liability	-3.48%			-4,244	117,603	23 Feb 2026	Direct
Ling Chow	AGO	Common Shares	Tax liability	-3.97%			-7,835	189,600	23 Feb 2026	Direct
Robert Bailenson	AGO	Common Shares	Tax liability	-3.08%			-9,494	298,445	23 Feb 2026	Direct
Dominic Frederico	AGO	Common Shares	Tax liability	-2.58%			-34,785	1,314,295	23 Feb 2026	Direct
Jorge A. Gana	AGO	Common Shares	Tax liability	-1.06%			-318	29,545	23 Feb 2026	Direct
Dominic Frederico	AGO	Common Shares	Award	5.5%			71,810	1,378,110	22 Feb 2026	Direct
Dominic Frederico	AGO	Common Shares	Tax liability	-3.57%			-48,430	1,306,300	22 Feb 2026	Direct
Benjamin G. Rosenblum	AGO	Common Shares	Tax liability	-2.58%			-1,710	64,461	22 Feb 2026	Direct
Holly Horn	AGO	Common Shares	Award	12.4%			5,822	52,603	22 Feb 2026	Direct
Holly Horn	AGO	Common Shares	Tax liability	-7.72%			-3,912	46,781	22 Feb 2026	Direct
Robert Bailenson	AGO	Common Shares	Award	5.5%			16,496	316,361	22 Feb 2026	Direct
Robert Bailenson	AGO	Common Shares	Tax liability	-4.48%			-14,056	299,865	22 Feb 2026	Direct
Ling Chow	AGO	Common Shares	Award	6.58%			12,616	204,412	22 Feb 2026	Direct
Ling Chow	AGO	Common Shares	Tax liability	-5.74%			-11,671	191,796	22 Feb 2026	Direct
Jorge A. Gana	AGO	Common Shares	Tax liability	-1.15%			-348	29,863	22 Feb 2026	Direct

An asterisk next to the price means the reported price is likely invalid.