MKS Instruments Ownership

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

Recent Insider Transactions

NasdaqGS:MKSI Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
01 Mar 24	SellUS$910,738	Kathleen Burke	Individual	7,411	US$122.89
22 Feb 24	SellUS$4,051,629	Seth Bagshaw	Individual	32,865	US$124.56
16 Feb 24	SellUS$237,933	Jacqueline Moloney	Individual	1,917.27	US$124.10
07 Nov 23	BuyUS$170,862	David Henry	Individual	2,500	US$68.34
06 Sep 23	SellUS$2,432,584	Seth Bagshaw	Individual	25,000	US$97.66
28 Aug 23	SellUS$23,814	Jacqueline Moloney	Individual	250	US$95.26
07 Aug 23	SellUS$1,170,543	Kathleen Burke	Individual	11,563.07	US$101.40
08 May 23	SellUS$172,250,000	The Carlyle Group Inc.	Company	2,000,000	US$86.13

Insider Trading Volume

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

Ownership Breakdown

What is the ownership structure of MKSI?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	11,127	0.0162%
State or Government	43,334	0.063%
Individual Insiders	436,530	0.635%
Institutions	68,290,893	99.3%

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

Top Shareholders

Top 25 shareholders own 80.09% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
12.1%	T. Rowe Price Group, Inc.	8,084,331	US$974.0m	69.9%	0.09%
10.3%	The Vanguard Group, Inc.	6,892,941	US$830.5m	0.57%	0.01%
9.21%	BlackRock, Inc.	6,178,625	US$744.4m	1.33%	0.01%
6.7%	Victory Capital Management Inc.	4,490,779	US$541.0m	14.9%	0.53%
6.05%	Capital Research and Management Company	4,056,410	US$488.7m	-29.2%	0.03%
6.04%	FMR LLC	4,050,751	US$488.0m	16.9%	0.03%
3.84%	Wellington Management Group LLP	2,577,290	US$310.5m	-4.62%	0.05%
3.13%	Invesco Ltd.	2,101,944	US$253.2m	1.41%	0.07%
2.73%	State Street Global Advisors, Inc.	1,828,262	US$220.3m	3.5%	0.01%
1.73%	Cooke & Bieler, L.P.	1,157,767	US$139.5m	2.45%	1.26%
1.71%	Norges Bank Investment Management	1,143,890	US$137.8m	30.3%	0.01%
1.67%	Royce & Associates, LP	1,119,693	US$134.9m	16.6%	1.16%
1.59%	BNY Mellon Asset Management	1,067,288	US$128.6m	-2.8%	0.02%
1.55%	Geode Capital Management, LLC	1,037,671	US$125.0m	3.17%	0.01%
1.51%	Neuberger Berman Investment Advisers LLC	1,011,531	US$121.9m	-39.3%	0.1%
1.41%	Goldman Sachs Asset Management, L.P.	945,647	US$113.9m	-30.7%	0.03%
1.34%	Principal Global Investors, LLC	901,244	US$108.6m	-3.48%	0.06%
1.31%	Nordea Investment Management, AB	880,884	US$106.1m	2,070%	0.08%
1.26%	JP Morgan Asset Management	847,874	US$102.2m	0.25%	0.01%
0.89%	Charles Schwab Investment Management, Inc.	597,309	US$72.0m	0%	0.01%
0.88%	Westfield Capital Management Company, L.P.	589,715	US$71.0m	0%	0.39%
0.86%	Madison Investment Holdings, Inc	578,639	US$69.7m	0.71%	0.93%
0.81%	Frontier Capital Management Co LLC	545,516	US$65.7m	20%	0.59%
0.8%	Polaris Capital Management, LLC	534,000	US$64.3m	15.8%	0.85%
0.72%	Northern Trust Global Investments	483,904	US$58.3m	0.66%	0.01%