Main Street Research LLC

Position in ENTG — Entegris Inc

CIK 1513211 SAUSALITO, CA

Position in ENTG

as of Jun 30, 2026 · filed Jul 29, 2026 Compact

Position Value

$329,503

+$112,375 QoQ

Shares Held

1,832

-1.1% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

#511

of 740 holders

Holding Since

Sep 2020

14 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

Main Street Research LLC holds $86,031,332 across 4 Semiconductor Equipment & Materials names. ENTG ranks #4 (0.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ASML	Asml Holding NV	42,396	$84,344,294
2	LRCX	Lam Research Corp	2,016	$873,593
3	KLAC	Kla Corp	1,604	$483,942
4	ENTG	Entegris Inc This page	1,832	$329,503

14 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$329,503	1,832	-1.1%	Shares	Sole	2026-07-29
2026-03-31	$217,128	1,852	+1.0%	Shares	Sole	2026-04-30
2024-09-30	$206,267	1,833	+1.7%	Shares	Sole	2024-11-12
2024-06-30	$244,126	1,803	0.0%	Shares	Sole	2024-07-29
2024-03-31	$253,393	1,803	0.0%	Shares	Sole	2024-05-01
2023-12-31	$216,035	1,803	-8.4%	Shares	Sole	2024-01-30
2023-06-30	$218,093	1,968	0.0%	Shares	Sole	2023-08-08
2022-03-31	$258,319	1,968	-7.1%	Shares	Sole	2022-05-05
2021-12-31	$293,512	2,118	-11.4%	Shares	Sole	2022-02-09
2021-09-30	$300,901	2,390	-0.4%	Shares	Sole	2021-11-12
2021-06-30	$295,128	2,400	0.0%	Shares	Sole	2021-08-06
2021-03-31	$268,320	2,400	0.0%	Shares	Sole	2021-05-07
2020-12-31	$230,640	2,400	-25.1%	Shares	Sole	2021-02-12
2020-09-30	$238,334	3,206	—	Shares	Sole	2020-11-10
No filing history on record for this holder in this stock.