WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in SIGI — Selective Insurance Group Inc

CIK 1644956 CHICAGO, IL

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Position in SIGI

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$28,377,850

+$451,962 QoQ

Shares Held

292,525

-21.0% QoQ

Ownership

0.491%

of shares outstanding

% of Portfolio

0.09%

of 13F equity value

Holder Rank

#39

of 374 holders

Holding Since

Mar 2020

12 quarters on record

Voting authority Sole 62% Shared 0% None 38%

Common Shares in SIGI Over Time

Shares Held

Position Value (USD)

Position in Insurance - Property & Casualty

Financial Services · as of Jun 30, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $68,731,711 across 4 Insurance - Property & Casualty names. SIGI ranks #2 (41.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	THG	Hanover Insurance Group, Inc.	154,277	$33,033,791
2	SIGI	Selective Insurance Group Inc This page	292,525	$28,377,850
3	PGR	Progressive Corp/Oh/	32,431	$7,084,551
4	AFG	American Financial Group Inc	1,683	$235,519

All Filings in SIGI

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12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$28,377,850	292,525	-21.0%	Shares	Sole	2026-08-12
2026-03-31	$27,925,888	370,419	+3.6%	Shares	Sole	2026-05-08
2025-12-31	$29,909,263	357,467	-9.5%	Shares	Sole	2026-02-09
2025-09-30	$32,011,381	394,861	-5.7%	Shares	Sole	2025-11-12
2025-06-30	$36,278,015	418,673	+43.5%	Shares	Sole	2025-07-29
2025-03-31	$26,698,647	291,661	+1412.9%	Shares	Sole	2025-05-09
2021-06-30	$1,564,409	19,278	-88.5%	Shares	Sole	2021-08-12
2021-03-31	$12,136,159	167,303	-36.9%	Shares	Sole	2021-05-13
2020-12-31	$17,766,445	265,250	-1.9%	Shares	Sole	2021-02-09
2020-09-30	$13,926,757	270,475	+9.2%	Shares	Sole	2020-11-06
2020-06-30	$13,064,594	247,717	-0.2%	Shares	Sole	2020-08-12
2020-03-31	$12,340,311	248,296	—	Shares	Sole	2020-05-08
No filing history on record for this holder in this stock.