[Form 4] OCTAVE SPECIALTY GROUP INC Insider Trading Activity

Rhea-AI Filing Summary

METZ LAWRENCE F. reported acquisition or exercise transactions in this Form 4 filing.

Octave Specialty Group Inc. reported that officer Lawrence F. Metz received a grant of 28,246 restricted stock units as part of his 2026 Long Term Incentive Plan award. Each RSU represents a right to receive one share of common stock. The RSUs vest in three equal annual installments on March 23, 2027, March 23, 2028, and March 23, 2029, aligning compensation with long-term company performance.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider METZ LAWRENCE F.

Role *See Remarks for full title

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	28,246	$0.00	--

Holdings After Transaction: Restricted Stock Units — 28,246 shares (Direct)

Footnotes (1)

1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the common stock of Octave Specialty Group, Inc. (the "Company"). On March 23, 2026 the reporting person received a grant of 28,246 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.

Form 4 Insider Transactions: What Each Field Means →

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^*

METZ LAWRENCE F.

(Last) (First) (Middle)

C/O OCTAVE SPECIALTY GROUP, INC.

40 WALL STREET

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	*See Remarks for full title

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/23/2026

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

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	(1)	03/23/2026		A		28,246		(2)	(2)	Common Stock, par value $0.01 per share	28,246	$0	28,246	D

Explanation of Responses:

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

2. On March 23, 2026 the reporting person received a grant of 28,246 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.

Remarks:

* Senior Managing Director and General Counsel

	William J. White, attorney in fact	03/25/2026
	** 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)

FAQ

What insider transaction did OSG report for Lawrence F. Metz?

Octave Specialty Group Inc. reported that officer Lawrence F. Metz received a grant of 28,246 restricted stock units. This equity award is part of his 2026 Long Term Incentive Plan and represents compensation, not an open-market purchase or sale of shares.

How many RSUs were granted to the OSG executive and on what date?

Lawrence F. Metz received 28,246 restricted stock units on March 23, 2026. These units are a form of stock-based compensation tied to Octave Specialty Group Inc.’s common stock, subject to a multi-year vesting schedule to encourage long-term alignment.

What does each OSG restricted stock unit granted to Lawrence F. Metz represent?

Each restricted stock unit granted to Lawrence F. Metz represents a contingent right to receive one share of Octave Specialty Group Inc. common stock. Actual share delivery depends on meeting vesting conditions over time as outlined in the award terms.

What is the vesting schedule for Lawrence F. Metz’s 28,246 OSG RSUs?

The 28,246 restricted stock units vest in three equal annual installments. Vesting begins on March 23, 2027, with additional installments on March 23, 2028, and March 23, 2029, providing long-term incentives tied to ongoing service and performance.

Is the OSG Form 4 transaction a market purchase or sale of shares?

No, the Form 4 transaction reflects a grant of restricted stock units, not a market trade. The RSUs were awarded as part of Lawrence F. Metz’s 2026 Long Term Incentive Plan compensation, with no cash price paid per unit in this transaction.

How many OSG derivative securities does Lawrence F. Metz hold after this RSU grant?

Following the reported grant, Lawrence F. Metz holds 28,246 restricted stock units as derivative securities. These units are directly owned and will convert into shares of common stock only as they vest according to the specified schedule.