Octave Specialty Group Inc (OSG) director receives 7,441 RSU award

Rhea-AI Filing Summary

Octave Specialty Group director Joan M. LammTennant received a grant of 7,441 restricted stock units (RSUs), each representing a contingent right to one share of common stock.

The RSUs were granted on April 1, 2026 and are scheduled to vest on April 1, 2027. Vested RSUs will convert into common shares on the earlier of the vesting date or when she ceases to serve on the Board, unless she elects to defer settlement. Following this award, she directly holds 16,091 RSUs tied to Octave Specialty Group common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider LAMMTENNANT JOAN M

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	7,441	$0.00	--

Holdings After Transaction: Restricted Stock Units — 16,091 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"). RSU's granted on April 1, 2026 shall vest one year later on April 1, 2027. RSUs that have become vested shall settle and convert into shares of common stock upon the earlier of the vesting date or the date that the reporting person resigns from, or otherwise ceases to be a member of, the Board of Directors of the Company, unless otherwise deferred upon the election of the Reporting person.

Key Figures

RSUs granted: 7,441 units Total RSUs after grant: 16,091 units Vesting date: April 1, 2027 +1 more

4 metrics

RSUs granted 7,441 units Restricted stock units awarded on April 1, 2026

Total RSUs after grant 16,091 units Director’s direct RSU holdings following the transaction

Vesting date April 1, 2027 Scheduled vesting for the 7,441 RSUs granted

RSU-to-share ratio 1 RSU : 1 share Each RSU represents a contingent right to one common share

Key Terms

Restricted Stock Units, contingent right, vest, Board of Directors

4 terms

Restricted Stock Units financial

"Each restricted stock unit ("RSU") represents a contingent right to receive one share"

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.

contingent right financial

"represents a contingent right to receive one share of the common stock"

vest financial

"RSU's granted on April 1, 2026 shall vest one year later on April 1, 2027"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

Board of Directors financial

"ceases to be a member of, the Board of Directors of the Company"

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

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^*

LAMMTENNANT JOAN M

(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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

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)	04/01/2026		A		7,441		(2)	(2)	Common Stock	7,441	$0	16,091	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. RSU's granted on April 1, 2026 shall vest one year later on April 1, 2027. RSUs that have become vested shall settle and convert into shares of common stock upon the earlier of the vesting date or the date that the reporting person resigns from, or otherwise ceases to be a member of, the Board of Directors of the Company, unless otherwise deferred upon the election of the Reporting person.

Remarks:

	William J. White, attorney in fact	04/02/2026
	** 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 director Joan M. LammTennant report on this Form 4?

Joan M. LammTennant reported receiving a grant of 7,441 restricted stock units. Each RSU represents a contingent right to one share of Octave Specialty Group common stock, increasing her direct RSU holdings to 16,091 units after this equity compensation award.

How many restricted stock units were granted to the OSG director and what do they represent?

She was granted 7,441 restricted stock units. Each RSU is a contingent right to receive one share of Octave Specialty Group common stock, meaning the award could become 7,441 shares if the vesting and settlement conditions are satisfied in the future.

When do Joan M. LammTennant’s new OSG restricted stock units vest and settle?

The RSUs granted on April 1, 2026 vest one year later on April 1, 2027. Once vested, they convert into shares of common stock on the earlier of that vesting date or when she leaves the Board, unless she chooses to defer settlement.

What are Joan M. LammTennant’s total OSG restricted stock unit holdings after this grant?

After the reported transaction, she directly holds 16,091 restricted stock units. These RSUs together represent contingent rights to receive up to 16,091 shares of Octave Specialty Group common stock, subject to the vesting schedules and settlement rules described in the award terms.

Is this OSG Form 4 transaction a market purchase or sale of common stock?

No, the Form 4 reports a compensation-related grant of restricted stock units rather than an open-market trade. The RSUs were awarded at no cash cost to the director and will only turn into common shares if the vesting and service conditions are met or settlement is otherwise triggered.