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  4. [Form 4] OCTAVE SPECIALTY GROUP INC Insider Trading Activity

Octave Specialty Group CEO converts 221,188 stock units

The reported award settlement included common-stock delivery and conversion into deferred units, while shares were withheld for tax obligations.

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Form Type
4

Rhea-AI Filing Summary

Octave Specialty Group Inc. (OSG) CEO Claude LeBlanc reported that 15,229 and 232,816 restricted stock units vested on October 3, 2026. Of the awards, 221,188 units were converted into deferred share units under the Executive Stock Deferral Plan, leaving a reported balance of 418,731 deferred share units. Common shares acquired upon RSU settlement totaled 15,229 in one transaction and 11,628 in another; 8,421 and 11,638 shares were withheld by the company for tax obligations at $4.60 per share.

Insider LeBlanc Claude
Role Chief Executive Officer
Type Security Shares Price Value
Exercise Restricted Stock Units F3, F4 15,229 $0.00 $0.00
Exercise Restricted Stock Units F3, F4 232,816 $0.00 $0.00
Exercise Deferred Share Units F5, F6 221,188 $0.00 $0.00
Exercise Common Stock F1 15,229 -- --
Tax Withholding Common Stock F2 8,421 $4.60 $39K
Exercise Common Stock F1 11,628 -- --
Tax Withholding Common Stock F2 11,638 $4.60 $54K
Holdings After Transaction: Restricted Stock Units — 232,787 contracts (Direct); Deferred Share Units — 418,731 contracts (Direct); Common Stock — 1,072,032 shares (Direct)
Footnotes (6)
  1. F1. The reporting person acquired shares of common stock Octave Specialty Group, Inc. (the "Company") upon the vesting and settlement of a portion of the reporting person's restricted stock unit ("RSU") awards as part of their 2025 Long Term Incentive Plan.
  2. F2. Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations.
  3. F3. Each RSU represents a contingent right to receive one share of the Company's common stock.
  4. F4. Represents the aggregate amount of RSUs that vested.
  5. F5. Each deferred share unit ("DSU") represents a contingent right to receive one share of common stock of the Company.
  6. F6. Represents the aggregate amount of RSUs that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.
Restricted stock units vested 232,816 shares October 3, 2026
Restricted stock units converted to deferred share units 221,188 units Under the Executive Stock Deferral Plan on October 3, 2026
Deferred share units after transaction 418,731 units October 3, 2026
Common shares acquired 15,229 shares Upon RSU settlement on October 3, 2026
Common shares acquired 11,628 shares Upon RSU settlement on October 3, 2026
Shares withheld for tax obligations 8,421 shares October 3, 2026
Shares withheld for tax obligations 11,638 shares October 3, 2026
Tax-withholding price $4.60 per share Shares withheld for tax obligations on October 3, 2026
RSU financial
"restricted stock unit ("RSU") awards"
Restricted stock units (RSUs) are a form of company shares given to employees as part of their compensation, usually with certain restrictions or conditions, such as remaining with the company for a set period. When these restrictions lift, employees receive actual shares that they can sell or hold. For investors, RSUs can impact a company's stock supply and reflect the company's commitment to attracting and retaining talent.
DSU financial
"deferred share unit ("DSU") represents a contingent right"
Executive Stock Deferral Plan financial
"pursuant to the Company's Executive Stock Deferral Plan"
Section 409A regulatory
"in accordance with Section 409A of the Internal Revenue Code"

FAQ

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

What stock transactions did OSG CEO Claude LeBlanc report?
On October 3, 2026, Claude LeBlanc acquired 15,229 and 11,628 common shares as restricted stock units settled. The company withheld 8,421 and 11,638 shares for tax obligations at $4.60 per share. He also converted 221,188 restricted stock units into deferred share units.

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

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
LeBlanc Claude
(Last)(First)(Middle)
C/O OCTAVE SPECIALTY GROUP, INC.
40 WALL STREET, 55TH FLOOR
(Street)
NEW YORK NEW YORK 10005
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
OCTAVE SPECIALTY GROUP INC [ OSG ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Executive Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
10/03/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock10/03/2026M15,229A(1)1,080,463D
Common Stock10/03/2026F8,421D$4.61,072,042(2)D
Common Stock10/03/2026M11,628A(1)1,083,670D
Common Stock10/03/2026F11,638D$4.61,072,032(2)D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units(3)10/03/2026M15,229 (4) (4)Common Stock15,229$0465,603D
Restricted Stock Units(3)10/03/2026M232,816 (4) (4)Common Stock232,816$0232,787D
Deferred Share Units(5)10/03/2026M221,188 (6) (6)Common Stock221,188$0418,731D
Explanation of Responses:
1. The reporting person acquired shares of common stock Octave Specialty Group, Inc. (the "Company") upon the vesting and settlement of a portion of the reporting person's restricted stock unit ("RSU") awards as part of their 2025 Long Term Incentive Plan.
2. Represents the amount of RSUs that were converted into shares of common stock and withheld by the Company to satisfy certain tax withholding obligations.
3. Each RSU represents a contingent right to receive one share of the Company's common stock.
4. Represents the aggregate amount of RSUs that vested.
5. Each deferred share unit ("DSU") represents a contingent right to receive one share of common stock of the Company.
6. Represents the aggregate amount of RSUs that were converted into an equivalent number of DSUs pursuant to the Company's Executive Stock Deferral Plan, which was designed to enable participants to elect to defer the settlement and income taxation of RSU and Performance Stock Unit awards in accordance with Section 409A of the Internal Revenue Code of 1986, as amended.
Remarks:
Reid Powell, attorney-in-fact10/06/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

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