Andersen Group Inc.

Q: Jun 30 2026

Q: Mar 31 2026

FY: Dec 31 2025

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Submission of Matters to a Vote of Security Holders

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Prospectus Supplement with Pricing Information

Notice of Effectiveness

Registration (IPO) statement under Securities Act of 1933

Prospectus Supplement with Pricing Information

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Notice of Effectiveness

Certification of approval for listing and registration on a national securities exchange

Registration of Securities on Exchange

Amended Initial Registration Statement

Amended Initial Registration Statement

Registration (IPO) statement under Securities Act of 1933

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

J. Goldman & Co LP

BROWN ADVISORY INC

KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC

DRIEHAUS CAPITAL MANAGEMENT LLC

Telemark Asset Management, LLC

ROYCE & ASSOCIATES LP

FRANKLIN RESOURCES INC

JPMORGAN CHASE & CO

Durable Capital Partners LP

Gunderson Robert V JR

BAMCO INC /NY/

BROWN ADVISORY INC

DRIEHAUS CAPITAL MANAGEMENT LLC

FRANKLIN RESOURCES INC

DECKER SUSAN L

BROWN ADVISORY INC

ROYCE & ASSOCIATES LP

DRIEHAUS CAPITAL MANAGEMENT LLC

J. Goldman & Co LP

BROWN ADVISORY INC

Draft registration statement (confidential submission)

Annual Report Scanned (Paper)

Draft registration statement (confidential submission) (amendment)

Draft registration statement (confidential submission) (amendment)

Draft registration statement (confidential submission)