Pacific Ridge Capital Partners, LLC

Position in KOP — Koppers Holdings Inc.

CIK 1591546 LAKE OSWEGO, OR

Position in KOP

as of Mar 31, 2026 · filed May 11, 2026 Compact

Position Value

$1,682,154

+$610,653 QoQ

Shares Held

43,489

+9.9% QoQ

Ownership

0.226%

of shares outstanding

% of Portfolio

0.38%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2021

18 quarters on record

Voting authority Sole 80% Shared 0% None 20%

Basic Materials · as of Mar 31, 2026

Pacific Ridge Capital Partners, LLC holds $5,778,332 across 3 Specialty Chemicals names. KOP ranks #2 (29.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CMT	Core Molding Technologies Inc	144,296	$3,232,230
2	KOP	Koppers Holdings Inc. This page	43,489	$1,682,154
3	HDSN	Hudson Technologies Inc /Ny	146,930	$863,948

18 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,682,154	43,489	+9.9%	Shares	Sole	2026-05-11
2025-12-31	$1,071,501	39,568	+4.7%	Shares	Sole	2026-02-04
2025-09-30	$1,058,624	37,808	+9.9%	Shares	Sole	2025-11-12
2025-06-30	$1,105,895	34,398	+12.4%	Shares	Sole	2025-08-11
2025-03-31	$856,800	30,600	-0.8%	Shares	Sole	2025-05-09
2024-12-31	$999,540	30,850	+41.2%	Shares	Sole	2025-02-12
2024-09-30	$797,851	21,841	+3.6%	Shares	Sole	2024-11-13
2024-06-30	$779,823	21,082	+0.1%	Shares	Sole	2024-08-15
2024-03-31	$1,161,549	21,054	-38.7%	Shares	Sole	2024-05-09
2023-12-31	$1,759,663	34,355	0.0%	Shares	Sole	2024-02-12
2023-09-30	$1,358,740	34,355	-0.4%	Shares	Sole	2023-11-13
2023-06-30	$1,176,620	34,505	+0.2%	Shares	Sole	2023-08-10
2023-03-31	$1,204,366	34,440	-0.3%	Shares	Sole	2023-05-12
2022-12-31	$974,028	34,540	+17.6%	Shares	Sole	2023-02-13
2022-09-30	$610,516	29,380	+12.7%	Shares	Sole	2022-11-10
2022-06-30	$589,998	26,060	+38.1%	Shares	Sole	2022-08-10
2022-03-31	$519,302	18,870	0.0%	Shares	Sole	2022-05-11
2021-12-31	$590,631	18,870	—	Shares	Sole	2022-02-10
No filing history on record for this holder in this stock.