Claude LeBlanc - 23 Mar 2026 Form 4 Insider Report for OCTAVE SPECIALTY GROUP INC (OSG)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: OSG
Reported as of: 23 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 25 Mar 2026, 16:55:09 UTC
Prior SEC filing: 05 Mar 2026
Source filing: View source filing
Reporting owner signature: William White, attorney-in-fact

Key filing fact

Claude LeBlanc filed Form 4 for OCTAVE SPECIALTY GROUP INC (OSG) on 25 Mar 2026.

Key facts

This page summarizes Claude LeBlanc's Form 4 filing for OCTAVE SPECIALTY GROUP INC (OSG).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 25 Mar 2026, 16:55.

Change

Previous filing in this sequence was filed on 05 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001380820 Primary reporting owner

LeBlanc Claude

Relationship: Chief Executive Officer, Director
Address: C/O OCTAVE SPECIALTY GROUP, INC., 40 WALL STREET, 55TH FLOOR, NEW YORK
Signature: William White, attorney-in-fact
Signature date: 25 Mar 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

OSG transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +99,375
Change %: +24%
Price: $0.000000^*
Shares after: 520,212
Date: 23 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 99,375
Exercise price
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Octave Specialty Group, Inc. (the "Company").

Footnote F2

On March 23, 2026 the reporting person received a grant of 99,375 RSUs as part of his 2026 Long Term Incentive Plan award. The RSUs will vest in three equal annual installments commencing March 23, 2027, March 23, 2028, and March 23, 2029.