Insider Transactions Reported by 12 Insiders of Andersen Group Inc.

Symbol: ANDG on NYSE
Location: San Francisco, CA

Quick Takeaways

ANDG - Andersen Group Inc. has 12 insiders with reported activity on this page.
No net insider buy/sell flow is currently reported for the last year.
Recent transaction rows are available for direct filing-level review.

What Changed

No meaningful buy/sell imbalance is currently visible in the one-year window.
Activity will update as new Forms 3/4/5 are filed.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Source Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 15 Apr 2025.

Buys

Shares: 0

Insiders: 0

Sells

Shares: 0

Insiders: 0

Net

Shares: 0

Insiders: 0

Window (months)	Buy $	Sell $	Net $
0-3	$0	$0	$0
3-6	$0	$0	$0
6-9	$0	$0	$0
9-12	$0	$0	$0

Andersen Group Inc. executives and other stock owners filed with the SEC include:

Name	Relationship	Valuation	Report Date
Mark Lawrence Vorsatz	Chairman and Chief Executive Officer, Director	Mixed	02 Feb 2026
Peter Coscia	East Regional Managing Director Exhibit 24 - Power of Attorney	Mixed	16 Dec 2025
Dorice Elizabeth Pepin	Director	Mixed	16 Dec 2025
Ronald L. Olson	Director	Mixed	18 Dec 2025
Daniel DePaoli	Country Managing Director	Mixed	16 Dec 2025
William L. Deckelman Jr.	Chief Legal Counsel	Mixed	16 Dec 2025
Neal Livingston	Chief Financial Officer	Mixed	16 Dec 2025
John Nicolai	Director	Mixed	18 Dec 2025
John R. Joyce	Director	Mixed	18 Dec 2025
Joseph Karczewski	Director	Mixed	16 Dec 2025
Robert V Gunderson Jr.	Director	Mixed	18 Dec 2025
Durable Capital Partners LP	10%+ Owner	Mixed	17 Dec 2025

Top shareholders of Andersen Group Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BROWN ADVISORY INC	13D/G 13F	Company	23%	2,946,522	$56,779,479	+$19,427,667	28 Feb 2026	13D/G 13F
JPMORGAN CHASE & CO	13F 13D/G	Company	14% from 13D/G	1,773,515	$45,987,244	—	31 Dec 2025	13F 13D/G
Durable Capital Partners LP	13F 13D/G 3/4/5	Company · 10%+ Owner	13% from 13D/G	1,670,485	$43,315,676	—	31 Dec 2025	13F 13D/G 3/4/5
J. Goldman & Co LP	13F 13D/G	Company	9.2% from 13D/G	1,160,000	$30,078,800	—	31 Dec 2025	13F 13D/G
ROYCE & ASSOCIATES LP	13D/G 13F	Company	12%	1,461,058	$28,154,588	+$13,329,907	28 Feb 2026	13D/G 13F
FRANKLIN RESOURCES INC	13F 13D/G	Company	7.9% from 13D/G	997,468	$25,864,346	—	31 Dec 2025	13F 13D/G
DRIEHAUS CAPITAL MANAGEMENT LLC	13F 13D/G	Company	5.4% from 13D/G	688,666	$17,857,109	—	31 Dec 2025	13F 13D/G
BAMCO INC /NY/	13F	Company	4%	500,000	$12,965,000	—	31 Dec 2025	13F
SEVEN GRAND MANAGERS, LLC	13F	Company	4%	500,000	$12,965,000	—	31 Dec 2025	13F
ArrowMark Colorado Holdings LLC	13F	Company	3.6%	450,000	$11,668,500	—	31 Dec 2025	13F
GOLDMAN SACHS GROUP INC	13F	Company	3.2%	401,837	$10,419,633	—	31 Dec 2025	13F
CITADEL ADVISORS LLC	13F	Company	2.9%	372,141	$9,649,616	—	31 Dec 2025	13F
Alyeska Investment Group, L.P.	13F	Company	2.6%	325,000	$8,427,250	—	31 Dec 2025	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	1.7%	213,648	$5,539,893	—	31 Dec 2025	13F
Ghisallo Capital Management LLC	13F	Company	1.6%	200,000	$5,186,000	—	31 Dec 2025	13F
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	1.4%	177,882	$4,612,480	—	31 Dec 2025	13F
TEACHER RETIREMENT SYSTEM OF TEXAS	13F	Company	1.3%	165,000	$4,278,450	—	31 Dec 2025	13F
Burkehill Global Management, LP	13F	Company	1.2%	150,000	$3,889,500	—	31 Dec 2025	13F
TUDOR INVESTMENT CORP ET AL	13F	Company	1.1%	144,544	$3,748,026	—	31 Dec 2025	13F
VANGUARD GROUP INC	13F	Company	1.1%	140,000	$3,630,201	—	31 Dec 2025	13F
Jain Global LLC	13F	Company	1%	131,250	$3,403,313	—	31 Dec 2025	13F
Allspring Global Investments Holdings, LLC	13F	Company	1%	129,589	$3,360,243	—	31 Dec 2025	13F
Telemark Asset Management, LLC	13F	Company	0.79%	100,000	$2,593,000	—	31 Dec 2025	13F
JANE STREET GROUP, LLC	13F	Company	0.68%	86,434	$2,241,234	—	31 Dec 2025	13F
READYSTATE ASSET MANAGEMENT LP	13F	Company	0.62%	78,884	$2,045,462	—	31 Dec 2025	13F
HBK INVESTMENTS L P	13F	Company	0.59%	74,500	$1,931,785	—	31 Dec 2025	13F
Schonfeld Strategic Advisors LLC	13F	Company	0.56%	70,392	$1,825,263	—	31 Dec 2025	13F
Longaeva Partners L.P.	13F	Company	0.55%	69,028	$1,789,896	—	31 Dec 2025	13F
SOROS FUND MANAGEMENT LLC	13F	Company	0.49%	62,600	$1,623,218	—	31 Dec 2025	13F
SEI INVESTMENTS CO	13F	Company	0.49%	61,956	$1,606,524	—	31 Dec 2025	13F
Hound Partners, LLC	13F	Company	0.47%	60,000	$1,555,800	—	31 Dec 2025	13F
LMR Partners LLP	13F	Company	0.47%	60,000	$1,555,800	—	31 Dec 2025	13F
D. E. Shaw & Co., Inc.	13F	Company	0.41%	52,000	$1,348,360	—	31 Dec 2025	13F
Russell Investments Group, Ltd.	13F	Company	0.41%	51,654	$1,339,387	—	31 Dec 2025	13F
Squarepoint Ops LLC	13F	Company	0.4%	51,000	$1,322,430	—	31 Dec 2025	13F
Limestone Investment Advisors LP	13F	Company	0.4%	50,000	$1,296,500	—	31 Dec 2025	13F
Woodline Partners LP	13F	Company	0.4%	50,000	$1,296,500	—	31 Dec 2025	13F
Hudson Bay Capital Management LP	13F	Company	0.39%	48,759	$1,264,321	—	31 Dec 2025	13F
MARSHALL WACE, LLP	13F	Company	0.38%	47,603	$1,234,347	—	31 Dec 2025	13F
Point72 Asset Management, L.P.	13F	Company	0.29%	36,382	$943,385	—	31 Dec 2025	13F
OXFORD ASSET MANAGEMENT LLP	13F	Company	0.25%	32,142	$833,442	—	31 Dec 2025	13F
DAVIDSON KEMPNER CAPITAL MANAGEMENT LP	13F	Company	0.2%	25,000	$648,250	—	31 Dec 2025	13F
Polymer Capital Management (US) LLC	13F	Company	0.2%	25,000	$648,250	—	31 Dec 2025	13F
RAYMOND JAMES FINANCIAL INC	13F	Company	0.15%	18,608	$482,505	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	0.12%	15,472	$401,189	—	31 Dec 2025	13F
Corient Private Wealth LLC	13F	Company	0.11%	13,760	$356,797	—	31 Dec 2025	13F
Bank of New York Mellon Corp	13F	Company	0.1%	12,674	$328,627	—	31 Dec 2025	13F
Covalis Capital LLP	13F	Company	0.09%	12,000	$311,160	—	31 Dec 2025	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.09%	12,000	$311,160	—	31 Dec 2025	13F
XTX Topco Ltd	13F	Company	0.08%	10,386	$269,309	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for Andersen Group Inc.

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

Insider	Symbol	Class	Transaction	%	Shares	Shares Owned	Date	Ownership
Mark Lawrence Vorsatz	ANDG	Class X Aggregator Units	Gift	11.1%	200,000	2,000,000	02 Feb 2026	See footnote
Mark Lawrence Vorsatz	ANDG	Class X Aggregator Units	Gift	-3.85%	-200,000	5,000,000	02 Feb 2026	Direct
Ronald L. Olson	ANDG	Class A Common Stock	Purchase		7,896	7,896	18 Dec 2025	Direct
John R. Joyce	ANDG	Class A Common Stock	Purchase		10,422	10,422	18 Dec 2025	Direct
Robert V Gunderson Jr.	ANDG	Class A Common Stock	Purchase		12,633	12,633	18 Dec 2025	Direct
John Nicolai	ANDG	Class A Common Stock	Purchase		9,475	9,475	18 Dec 2025	Direct
Durable Capital Partners LP	ANDG	Class A Common Stock	Purchase	27.3%	357,985	1,670,485	17 Dec 2025	See footnote (1)

* An asterisk sign (*) next to the price indicates that the price is likely invalid.