Octave Specialty CEO exercises 39,380 RSUs

Octave Specialty Group Inc. Chief Executive Officer Claude LeBlanc reported equity compensation activity tied to his 2025 Long Term Incentive Plan.

Rhea-AI Filing Summary

Octave Specialty Group Inc. Chief Executive Officer Claude LeBlanc reported equity compensation activity tied to his 2025 Long Term Incentive Plan. On July 9, 2026, 39,380 restricted stock units vested and were converted into common shares, with 21,777 shares withheld by the company at $6.08 per share to cover tax obligations. Following these transactions, LeBlanc holds 1,065,234 shares of common stock directly and 480,832 restricted stock units that remain outstanding and subject to future vesting through July 2028.

Filing Explained

Completed RSU vesting resulted in 1,065,234 disclosed common shares, with 21,777 shares withheld for taxes; two annual installments remain scheduled.

The July 13 Form 4 records a completed July 9 vesting and settlement of 39,380 RSUs for the CEO, with 21,777 shares withheld for taxes; afterward, the filing reports 1,065,234 directly owned common shares and 480,832 directly owned RSUs.

Form 4 is the insider-transaction report, and its codes identify the transaction mechanics; here, M is used for the RSU conversion and F for tax withholding.

The filing says each RSU represents a contingent right to one common share, and the F line lists a price of $6.08 while the explanation describes those shares as withheld to satisfy tax obligations.

This was the first of three equal annual installments under the 2025 Long Term Incentive Plan, with the filing identifying July 9, 2027 and July 9, 2028 as the next vesting dates.

Insider Trade Summary

39,380 shares exercised/converted

Exercise 3 txns

Insider LeBlanc Claude

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units F3, F4	39,380	$0.00	$0.00
Exercise	Common Stock F1	39,380	--	--
Tax Withholding	Common Stock F2	21,777	$6.08	$132K

Holdings After Transaction: Restricted Stock Units — 480,832 contracts (Direct); Common Stock — 1,065,234 shares (Direct)

Footnotes (4)

1. F1. The reporting person acquired shares of common stock of 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. The RSUs vested pursuant to the first of three equal annual installments under the reporting person's 2025 Long Term Incentive Plan award, which vests in equal installments on July 9, 2026, July 9, 2027, and July 9, 2028.

Key Figures

RSUs vested and converted: 39,380 shares Shares withheld for taxes: 21,777 shares Tax withholding price: $6.08 per share +2 more

5 metrics

RSUs vested and converted 39,380 shares Restricted Stock Units converted into common stock on July 9, 2026

Shares withheld for taxes 21,777 shares Common shares withheld to satisfy tax withholding obligations at $6.08 per share

Tax withholding price $6.08 per share Value used for withholding 21,777 shares for tax obligations

Common shares held after transactions 1,065,234 shares Direct common stock holdings of Claude LeBlanc following July 9, 2026 activity

RSUs outstanding after vesting 480,832 units Remaining restricted stock units held after the reported vesting and settlement

Key Terms

Restricted Stock Units, tax withholding obligations, Long Term Incentive Plan

3 terms

Restricted Stock Units financial

"The reporting person acquired shares of common stock ... upon the vesting and settlement of a portion of the reporting person's restricted stock unit"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"withheld by the Company to satisfy certain tax withholding obligations"

Long Term Incentive Plan financial

"as part of their 2025 Long Term Incentive Plan"

A long term incentive plan is a company program that awards executives and key employees bonuses—often in stock, options, or cash—only if the business meets multi-year performance goals. It links management pay to company results—like tying a coach’s bonus to a team’s multi-season record—so investors monitor it for how leaders are motivated, potential share dilution, and signals about the company’s long-term priorities.

FAQ

What equity transactions did OSG CEO Claude LeBlanc report on July 9, 2026?

Claude LeBlanc reported 39,380 RSUs vesting and converting into Octave Specialty Group common stock. Of those, 21,777 shares were withheld by the company to satisfy tax withholding obligations at $6.08 per share.

How many Octave Specialty Group (OSG) shares does the CEO hold after these transactions?

After the July 9, 2026 activity, Claude LeBlanc holds 1,065,234 shares of Octave Specialty Group common stock directly. These holdings reflect the RSU vesting and related tax withholding disposition reported in the filing.

Were the OSG CEO’s July 9, 2026 transactions open-market buys or sells?

The transactions were not open-market buys or sells. They reflect RSU vesting and option/RSU exercises, plus a tax-withholding disposition where 21,777 shares were withheld by the company to cover tax obligations.

How many restricted stock units does the OSG CEO still hold after the vesting event?

Following the July 9, 2026 vesting, Claude LeBlanc continues to hold 480,832 restricted stock units. These RSUs remain outstanding and will vest in three equal annual installments through July 9, 2028.

What plan governs the RSU vesting reported by Octave Specialty Group (OSG) CEO Claude LeBlanc?

The RSU vesting is part of LeBlanc’s 2025 Long Term Incentive Plan award. According to the disclosure, the award vests in three equal annual installments on July 9, 2026, July 9, 2027, and July 9, 2028.

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Available on EDGAR 07/13/2026 - 04:06 PM Accepted by SEC EDGAR 07/13/2026 - 04:05 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/09/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/09/2026		M		39,380	A	(1)	1,087,011	D
Common Stock	07/09/2026		F		21,777	D	$6.08	1,065,234(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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(3)	07/09/2026		M			39,380	(4)	(4)	Common Stock	39,380	$0	480,832	D

Explanation of Responses:

1. The reporting person acquired shares of common stock of 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. The RSUs vested pursuant to the first of three equal annual installments under the reporting person's 2025 Long Term Incentive Plan award, which vests in equal installments on July 9, 2026, July 9, 2027, and July 9, 2028.

Remarks:

Exhibit 24.1. Power of Attorney

	Reid Powell, attorney-in-fact	07/13/2026
	** Signature of Reporting Person	Date
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)