Boston Partners

Position in NPKI — NPK International Inc.

CIK 1386060 BOSTON, MA

Position in NPKI

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

Position Value

$682,638

+$56,409 QoQ

Shares Held

47,111

-10.3% QoQ

Ownership

0.056%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

11 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Industrials · as of Mar 31, 2026

Boston Partners holds $640,843,833 across 7 Building Products & Equipment names. NPKI ranks #7 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MAS	Masco Corp /De/	4,492,021	$271,183,306
2	BLDR	Builders FirstSource, Inc.	1,602,360	$131,922,297
3	CSL	Carlisle Companies Inc	334,261	$111,516,153
4	LPX	Louisiana-Pacific Corp	1,317,315	$95,834,665
5	ROCK	Gibraltar Industries, Inc.	686,625	$27,375,737
6	CARR	CARRIER GLOBAL Corp	41,361	$2,329,037
7	NPKI	NPK International Inc. This page	47,111	$682,638

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$682,638	47,111	-10.3%	Shares	Defined	2026-05-11
2025-12-31	$626,229	52,536	-30.5%	Shares	Defined	2026-02-13
2025-09-30	$855,454	75,637	-17.7%	Shares	Defined	2025-11-13
2025-06-30	$782,222	91,918	+0.7%	Shares	Defined	2025-08-12
2025-03-31	$530,464	91,302	-95.1%	Shares	Defined	2025-05-13
2024-12-31	$14,315,801	1,866,467	+8.2%	Shares	Other	2025-02-11
2024-09-30	$11,950,202	1,724,416	-1.5%	Shares	Other	2024-11-12
2024-06-30	$14,550,601	1,750,975	+181.5%	Shares	Defined	2024-08-14
2021-09-30	$2,052,682	622,025	+6.0%	Shares	Defined	2021-11-05
2020-06-30	$1,308,144	586,612	+55.8%	Shares	Other	2020-08-12
2020-03-31	$338,934	376,595	—	Shares	Other	2020-05-13
No filing history on record for this holder in this stock.