OBERWEIS ASSET MANAGEMENT INC/

Position in SEI — Solaris Energy Infrastructure, Inc.

CIK 937886 LISLE, IL

Position in SEI

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$45,426,187

+$15,369,140 QoQ

Shares Held

564,581

+6.1% QoQ

Ownership

0.737%

of shares outstanding

% of Portfolio

0.95%

of 13F equity value

Holder Rank

#36

of 429 holders

Holding Since

Mar 2025

6 quarters on record

Voting authority Sole 97% Shared 0% None 3%

Energy · as of Jun 30, 2026

OBERWEIS ASSET MANAGEMENT INC/ holds $94,571,154 across 4 Oil & Gas Equipment & Services names. SEI ranks #1 (48.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	SEI	Solaris Energy Infrastructure, Inc. This page	564,581	$45,426,187
2	KGS	Kodiak Gas Services, Inc.	355,870	$26,736,513
3	PUMP	ProPetro Holding Corp.	1,097,100	$15,732,414
4	XPRO	Expro Ltd	452,000	$6,676,040

6 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$45,426,187	564,581	+6.1%	Shares	Sole	2026-08-14
2026-03-31	$30,057,047	531,889	+45.0%	Shares	Sole	2026-05-15
2025-12-31	$16,866,393	366,900	0.0%	Shares	Sole	2026-02-17
2025-09-30	$14,664,993	366,900	0.0%	Shares	Sole	2025-11-17
2025-06-30	$10,379,601	366,900	+1.9%	Shares	Sole	2025-08-14
2025-03-31	$7,833,600	360,000	—	Shares	Sole	2025-05-15
No filing history on record for this holder in this stock.