Vanguard-backed funds hold 3.52M shares of Selective Insurance (SIGI)

Rhea-AI Filing Summary

Selective Insurance Group Inc reports a 13G filing showing Vanguard Portfolio Management beneficially owns 3,515,742 shares, representing 5.87% of common stock. The filing states Vanguard has sole dispositive power over 3,515,742 shares and sole voting power for 56,492 shares. The disclosure describes holdings on behalf of Vanguard funds and affiliated advisory accounts.

Insights

Institutional Ownership Analyst

Vanguard's 5.87% stake is a standard 13G passive disclosure.

Vanguard Portfolio Management reports beneficial ownership of 3,515,742 shares with sole dispositive power; this aligns with passive, investment-manager holdings reported on Schedule 13G rather than an active takeover intent. The filing cites affiliated investment vehicles and managed accounts as the sources of holdings.

Key items to watch in subsequent filings include any change above 5% or conversion to a Schedule 13D, which would indicate active intent; timing not specified in the excerpt.

Proxy and Governance Specialist

Voting and dispositive power split is typical for large asset managers.

The report shows 56,492 shares of sole voting power versus 3,515,742 of sole dispositive power, reflecting custodial and fund-structure arrangements where voting authority and investment disposition are separated. The statement references SEC Release No. 34-39538 to explain aggregation rules for Vanguard-affiliated accounts.

Monitor future amendments for shifts in voting control or disclosures naming specific funds if governance engagement increases.

Key Figures

Beneficial ownership: 3,515,742 shares Percent of class: 5.87% Sole voting power: 56,492 shares +2 more

5 metrics

Beneficial ownership 3,515,742 shares Schedule 13G filing

Percent of class 5.87% Common stock

Sole voting power 56,492 shares Voting power reported

Sole dispositive power 3,515,742 shares Disposition authority reported

CUSIP 816300107 Selective Insurance Group Inc Common Stock

Key Terms

beneficially owned, sole dispositive power, Schedule 13G, Investment Company Act of 1940

4 terms

beneficially owned regulatory

"reflects the securities beneficially owned, or deemed to be beneficially owned"

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 Dispositive Power 3,515,742.00"

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.

Schedule 13G regulatory

"Item 1. Name of issuer: Selective Insurance Group Inc"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Investment Company Act of 1940 regulatory

"investment company registered under the Investment Company Act of 1940"

A U.S. federal law that sets the rulebook for pooled investment vehicles such as mutual funds, exchange-traded funds and similar money managers, requiring them to register with regulators, disclose holdings and fees, limit conflicts of interest, and follow governance standards. It matters to investors because these protections and transparency rules act like a referee and scoreboard, helping people compare funds, trust that managers follow fair practices, and spot hidden costs or risks.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Selective Insurance Group Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

816300107

(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): 816300107

1

Names of Reporting Persons

Vanguard Portfolio Management

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

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 56,492.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 3,515,742.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

3,515,742.00

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)

5.87 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by Vanguard Portfolio Management LLC and the following affiliates of Vanguard Portfolio Management LLC or business divisions of such affiliates: Vanguard Fiduciary Trust Company and Vanguard Global Advisers, LLC. This Schedule 13G includes securities held by Vanguard funds, or sleeves thereof, over which Vanguard Portfolio Management LLC exercises dispositive power, in addition to securities held by clients over which the affiliates or business divisions of such affiliates indicated above exercise dispositive and/or voting power. This Schedule 13G does not include securities, if any, beneficially owned by other subsidiaries or affiliates of Vanguard Portfolio Management LLC, or business divisions of such subsidiaries whose ownership of securities is disaggregated from that of the reporting business unit in accordance with such release.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Selective Insurance Group Inc
(b)	Address of issuer's principal executive offices: 40 Wantage Avenue, Branchville, NJ, 07890
Item 2.
(a)	Name of person filing: Vanguard Portfolio Management
(b)	Address or principal business office or, if none, residence: 100 Vanguard Blvd,, Malvern, PA, 19355
(c)	Citizenship: PA
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 816300107
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: 3515742
(b)	Percent of class: 5.87 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 56492
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 3515742
	(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.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Vanguard Portfolio Management, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.No one other person's interest in the securities reported herein is more than 5%.
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 8.	Identification and Classification of Members of the Group.
	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.

Vanguard Portfolio Management

Signature:	Ashley Grim
Name/Title:	Head of Global Fund Administration
Date:	04/29/2026

FAQ

What stake does Vanguard hold in Selective Insurance Group (SIGI)?

Vanguard Portfolio Management reports beneficial ownership of 3,515,742 shares, equal to 5.87% of Selective Insurance Group common stock, as stated in the Schedule 13G filing.

Does Vanguard control voting for the SIGI shares it reports?

Vanguard reports sole voting power for 56,492 shares and sole dispositive power for 3,515,742 shares, indicating voting and disposition powers are not identical.

Is this Schedule 13G filing an active takeover signal for SIGI?

No. The filing is a Schedule 13G passive disclosure for an investment manager; it does not indicate active acquisition intent. The filing lists managed funds and affiliates as beneficial holders.

Who filed the disclosure for Vanguard on SIGI?

The filing was submitted by Vanguard Portfolio Management, signed by Ashley Grim, Head of Global Fund Administration, with an address at 100 Vanguard Blvd., Malvern, PA.

Does the filing identify which Vanguard funds own the shares?

The filing states holdings include Vanguard funds and managed accounts under Vanguard Portfolio Management and affiliates, but it does not list specific fund names in the provided excerpt.