DISCIPLINED GROWTH INVESTORS INC /MN

Position in CLB — Core Laboratories Inc. /DE/

CIK 1050442 MINNEAPOLIS, MN

Position in CLB

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$82,894,160

+$68,529 QoQ

Shares Held

4,937,115

-4.4% QoQ

Ownership

10.7%

of shares outstanding

% of Portfolio

1.70%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2023

13 quarters on record

Voting authority Sole 94.25824595943178.ToString("F0")% Shared 0.ToString("F0")% None 5.741754040568227.ToString("F0")%

Energy · as of Mar 31, 2026

DISCIPLINED GROWTH INVESTORS INC /MN holds $96,331,557 across 2 Oil & Gas Equipment & Services names. CLB ranks #1 (86.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)	Open
1	CLB	Core Laboratories Inc. /DE/ This page	4,937,115	$82,894,160
2	GEOS	Geospace Technologies Corp	1,101,426	$13,437,397

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$82,894,160	4,937,115	-4.4%	Shares	Sole	2026-05-15
2025-12-31	$82,825,631	5,166,914	-13.4%	Shares	Sole	2026-02-17
2025-09-30	$73,787,469	5,969,860	+9.7%	Shares	Sole	2025-11-14
2025-06-30	$62,678,983	5,440,884	-0.9%	Shares	Sole	2025-08-14
2025-03-31	$82,320,912	5,491,722	-0.2%	Shares	Sole	2025-05-15
2024-12-31	$95,268,198	5,503,651	-2.7%	Shares	Sole	2025-02-14
2024-09-30	$104,761,041	5,653,591	+26.7%	Shares	Sole	2024-11-15
2024-06-30	$90,508,008	4,460,720	+446.8%	Shares	Sole	2024-08-15
2024-03-31	$13,933,129	815,757	+8.4%	Shares	Sole	2024-05-15
2023-12-31	$13,286,801	752,367	+1.9%	Shares	Sole	2024-02-14
2023-09-30	$17,728,599	738,384	-2.7%	Shares	Sole	2023-11-15
2023-06-30	$17,651,214	759,192	-4.6%	Shares	Sole	2023-08-14
2023-03-31	$17,540,422	795,484	—	Shares	Sole	2023-05-15
No filing history on record for this holder in this stock.