ISTHMUS PARTNERS, LLC

Position in WRB — Berkley W R Corp

CIK 1639666 MADISON, WI

Position in WRB

as of Mar 31, 2026 · filed Apr 30, 2026 Compact

Position Value

$13,555,585

-$1,080,422 QoQ

Shares Held

204,520

-2.0% QoQ

Ownership

0.055%

of shares outstanding

% of Portfolio

1.58%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 1.241932329356542.ToString("F0")% Shared 0.ToString("F0")% None 98.75806767064346.ToString("F0")%

Financial Services · as of Mar 31, 2026

ISTHMUS PARTNERS, LLC holds $25,820,602 across 4 Insurance - Property & Casualty names. WRB ranks #1 (52.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	WRB	Berkley W R Corp This page	204,520	$13,555,585
2	KNSL	Kinsale Capital Group, Inc.	25,841	$8,828,836
3	RLI	Rli Corp	54,537	$3,110,790
4	MKL	Markel Group Inc.	170	$325,391

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$13,555,585	204,520	-2.0%	Shares	Sole	2026-04-30
2025-12-31	$14,636,007	208,728	-1.2%	Shares	Sole	2026-02-05
2025-09-30	$16,187,584	211,271	-1.2%	Shares	Sole	2025-11-10
2025-06-30	$15,708,179	213,804	-4.7%	Shares	Sole	2025-08-13
2025-03-31	$15,968,659	224,405	-0.8%	Shares	Sole	2025-05-01
2024-12-31	$13,236,287	226,184	-1.1%	Shares	Sole	2025-02-07
2024-09-30	$12,970,179	228,630	+48.2%	Shares	Sole	2024-11-14
2024-06-30	$8,080,543	154,248	-1.7%	Shares	Sole	2024-08-14
2024-03-31	$9,250,175	156,889	-3.9%	Shares	Sole	2024-05-08
2023-12-31	$7,700,046	163,321	+1.9%	Shares	Sole	2024-02-12
2023-09-30	$6,785,858	160,321	-0.2%	Shares	Sole	2023-11-14
2023-06-30	$6,375,545	160,566	+1.7%	Shares	Sole	2023-08-03
2023-03-31	$6,551,832	157,850	-0.4%	Shares	Sole	2023-05-11
2022-12-31	$7,667,165	158,478	-2.6%	Shares	Sole	2023-02-10
2022-09-30	$7,005,589	162,719	-0.7%	Shares	Sole	2022-11-14
2022-06-30	$7,455,226	163,827	-0.7%	Shares	Sole	2022-08-08
2022-03-31	$7,327,025	165,048	+52.9%	Shares	Sole	2022-05-04
2021-12-31	$3,952,928	107,951	+1.8%	Shares	Sole	2022-01-25
2021-09-30	$3,447,488	105,997	+0.9%	Shares	Sole	2021-11-10
2021-06-30	$3,474,259	105,026	+0.7%	Shares	Sole	2021-08-10
2021-03-31	$3,492,356	104,284	+5.5%	Shares	Sole	2021-05-17
2020-12-31	$2,919,085	98,885	+2.2%	Shares	Sole	2021-02-16
2020-09-30	$2,628,827	96,727	+11.0%	Shares	Sole	2020-11-04
2020-06-30	$2,218,521	87,130	+2.0%	Shares	Sole	2020-08-14
2020-03-31	$1,980,631	85,421	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.