Octave Specialty Group (OSG) holder reports 4.99% stake — Western Standard LLC

Rhea-AI Filing Summary

Octave Specialty Group, Inc. receives an amended Schedule 13G filing reporting that Western Standard LLC, through Managing Member Eric D. Andersen, beneficially owns 2,247,591 shares of Common Stock, representing 4.99% of the class. The filing shows sole voting and sole dispositive power over the shares. The amendment is signed by Mr. Andersen on 05/11/2026.

Insights

Corporate Governance Analyst

Holder reports a passive minority stake with sole control over votes and disposition.

The filing states 2,247,591 shares and 4.99% ownership, with sole voting and dispositive power recorded by Western Standard LLC. This level is below common beneficial-ownership thresholds that trigger certain takeover notice requirements.

Future disclosures in Schedule 13 filings may indicate changes if the stake crosses ownership limits or if the holder changes voting arrangements.

Securities Compliance Specialist

Amendment documents ownership and power allocation; no transaction details shown.

The Schedule 13G/A lists the reporting person and address and affirms sole voting and dispositive power for the reported shares. The filing is an ownership disclosure rather than a transaction notice.

Monitor subsequent amendments for any change in percent ownership or conversion to a Schedule 13D if activism or acquisition intent appears.

Key Figures

Beneficial ownership: 2,247,591 shares Percent of class: 4.99% Signature date: 05/11/2026 +1 more

4 metrics

Beneficial ownership 2,247,591 shares amount beneficially owned reported on the Schedule 13G/A

Percent of class 4.99% percent of Common Stock reported in Item 4(b)

Signature date 05/11/2026 signed by Eric D. Andersen on the amendment

CUSIP 023139884 identifier for Octave Specialty Group Common Stock as listed on the filing

Key Terms

Schedule 13G/A, beneficially owned, sole dispositive power

3 terms

Schedule 13G/A regulatory

"Amendment No. 1) ... Schedule 13G/A"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficially owned financial

"Amount beneficially owned: 2,247,591 (b) Percent of class: 4.99%"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 2,247,591"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Octave Specialty Group, Inc.

(Name of Issuer)

Common Stock, $0.01 par value per share

(Title of Class of Securities)

023139884

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 023139884

1

Names of Reporting Persons

Western Standard LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,247,591.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,247,591.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,247,591.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.99 %

12

Type of Reporting Person (See Instructions)

IA, HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Octave Specialty Group, Inc.
(b)	Address of issuer's principal executive offices: One World Trade Center 41st Floor | New York, NY | 10005 | United States
Item 2.
(a)	Name of person filing: Eric D. Andersen
(b)	Address or principal business office or, if none, residence: 5757 Wilshire Blvd, Suite 636 | Los Angeles, CA | 90036 | United States
(c)	Citizenship: Western Standard, LLC is a California limited liability company. Mr. Andersen is a United States citizen.
(d)	Title of class of securities: Common Stock, $0.01 par value per share
(e)	CUSIP No.: 023139884
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 2,247,591
(b)	Percent of class: 4.99%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2,247,591
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2,247,591
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Western Standard LLC

Signature:	Eric D. Andersen
Name/Title:	Managing Member of Western Standard LLC
Date:	05/11/2026

FAQ

What stake does Western Standard LLC report in OSG?

Western Standard LLC reports 2,247,591 shares, representing 4.99% of Octave Specialty Group's common stock, with sole voting and dispositive power.

Who filed the Schedule 13G/A for OSG and when was it signed?

The filing names Eric D. Andersen as the reporting person for Western Standard LLC and the amendment is signed on 05/11/2026.

Does the Schedule 13G/A indicate Western Standard will control Octave Specialty Group?

The filing shows sole voting and dispositive power over the shares held, but it reports a 4.99% minority stake rather than control of the company.

Is this Schedule 13G/A an indication of activist intent by Western Standard?

The amendment reports ownership and powers only; it does not state intent or plans. Changes in filing type or future amendments would signal activist intent.

What address is listed for the issuer in the filing?

The issuer's principal executive offices are listed as One World Trade Center, 41st Floor, New York, NY 10005 in the filing.