MKS Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

BIT:1MKSI Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
18 May 26	Sell€351,920	Peter Cannone	Individual	1,350	€260.68
14 May 26	Sell€267,459	Jacqueline Moloney	Individual	1,000	€267.46
13 May 26	Sell€381,384	Jacqueline Moloney	Individual	1,400	€272.42
11 May 26	Sell€1,182,369	Kathleen Burke	Individual	4,355	€271.50
11 May 26	Sell€773,353	Eric Taranto	Individual	2,848.52	€271.49
12 Mar 26	Sell€63,072	Jacqueline Moloney	Individual	340.11	€185.45
06 Mar 26	Sell€868,509	Eric Taranto	Individual	4,567.88	€190.13
24 Feb 26	Sell€887,002	James Schreiner	Individual	4,100	€216.34
24 Feb 26	Sell€4,300,263	Gerald Colella	Individual	20,000	€215.47
20 Feb 26	Sell€6,538,512	John T. Lee	Individual	30,000	€220.44
20 Feb 26	Sell€902,699	Kathleen Burke	Individual	4,254	€212.20
20 Feb 26	Sell€444,554	John Williams	Individual	2,042.63	€217.64
20 Feb 26	Sell€311,087	Michelle McCarthy	Individual	1,466	€212.50
20 Feb 26	Sell€444,024	David Henry	Individual	2,000	€222.01
20 Feb 26	Sell€305,248	Eric Taranto	Individual	1,452.73	€210.12
20 Feb 26	Sell€174,190	Jacqueline Moloney	Individual	829	€210.12
20 Feb 26	Sell€273,801	Peter Cannone	Individual	1,250	€219.04

Insider Trading Volume

Insider Buying: 1MKSI insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of 1MKSI?
Owner Type	Number of Shares	Ownership Percentage
State or Government	58,027	0.0817%
Individual Insiders	375,882	0.529%
Institutions	70,604,564	99.4%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 66.72% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
9.83%	BlackRock, Inc.	6,641,687	€1.9b	8.19%	0.02%
5.46%	Vanguard Portfolio Management, LLC	3,685,493	€1.1b	0%	0.05%
4.81%	Capital Research and Management Company	3,245,970	€925.2m	0.21%	0.04%
4.54%	Invesco Ltd.	3,067,327	€874.3m	-15.6%	0.22%
4.46%	Vanguard Capital Management, LLC	3,014,201	€859.2m	0%	0.02%
3.05%	State Street Global Advisors, Inc.	2,057,732	€586.5m	1.99%	0.02%
2.89%	JP Morgan Asset Management	1,951,242	€556.2m	32.7%	0.05%
2.84%	FMR LLC	1,918,701	€546.9m	-39.8%	0.03%
2.71%	Wellington Management Group LLP	1,833,137	€522.5m	-28.2%	0.09%
2.52%	T. Rowe Price Group, Inc.	1,700,148	€484.6m	-38.3%	0.04%
2.38%	Point72 Asset Management, L.P.	1,610,331	€459.0m	157%	0.8%
2.28%	Geode Capital Management, LLC	1,539,319	€438.8m	22.8%	0.02%
2.28%	Aspex Management (HK) Limited	1,538,789	€438.6m	0%	5.2%
2.12%	Neuberger Berman Investment Advisers LLC	1,433,529	€408.6m	-1.89%	0.3%
1.93%	Whale Rock Capital Management LLC	1,306,724	€372.5m	0%	3.57%
1.55%	Westfield Capital Management Company, L.P.	1,046,763	€298.4m	24.7%	1.22%
1.4%	Citadel Advisors LLC	947,032	€269.9m	107%	0.19%
1.39%	Millennium Management LLC	937,888	€267.3m	12.5%	0.18%
1.37%	Norges Bank Investment Management	922,737	€263.0m	0%	0.02%
1.3%	Victory Capital Management Inc.	878,758	€250.5m	-65.7%	0.15%
1.28%	Charles Schwab Investment Management, Inc.	866,647	€247.0m	-0.46%	0.03%
1.24%	Dimensional Fund Advisors LP	835,345	€238.1m	-25.3%	0.03%
1.18%	BNY Asset Management	795,368	€226.7m	6.69%	0.04%
0.97%	Invesco Capital Management LLC	654,132	€186.5m	195%	0.05%
0.94%	UBS Asset Management AG	636,050	€181.3m	21.4%	0.01%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/06/03 17:54
End of Day Share Price	2026/06/03 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

MKS Inc. is covered by 25 analysts. 12 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Christopher Muse	Barclays
Paretosh Misra	Berenberg
Michael Mani	BofA Global Research