MKS Instruments Inc

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MKS Instruments Inc
TickerMKSI
CIK #0001049502
CUSIP55306N104
SectorLife Sciences - Industrial Instruments For Measurement, Display, And Control
Address2 Tech Drive Suite 201, Andover, MA 01810
Source [EDGAR]
CIK Filing 2011 - 2026
[0001049502] 10-K
[0001049502] 10-Q
[0001049502] 3
[0001049502] 4
[0001049502] 5
[0001049502] 8-K
[0001049502] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
JPMorgan Chase & Co MKS Inc [2026-07-16] 0.0
Vanguard Capital Management LLC MKS Inc [2026-04-30] 0.0
Vanguard Portfolio Management LLC MKS Inc [2026-04-29] 0.0
Invesco Ltd MKS Inc [2026-02-12] 0.0
Victory Capital Management Inc MKS Inc [2025-08-08] 0.0
FMR LLC MKS Instruments Inc [2024-02-09] 0.0
Price T Rowe Associates Inc /MD/ MKS Instruments Inc [2024-01-10] 12.1
Victory Capital Management Inc MKS Instruments Inc [2023-02-02] 5.77
Carlyle Group Inc MKS Instruments Inc [2022-08-29] 12.8
Capital International Investors MKS Instruments Inc [2020-02-14] 7.9
Wellington Management Group LLP MKS Instruments Inc [2020-01-30] 7.03
Wellington Management Group LLP MKS Instruments Inc [2017-02-09] 0.97
Vanguard Group Inc MKS Instruments Inc [2012-02-10] 5.24
Form 3/4/5 Filer 2011 - 2026
MKS Inc
Schreiner James Alan
McCarthy Michelle M
Donlan Renee Martel
Mora Elizabeth
Henry David Philip
Colella Gerald G
Donahue Joseph B
Lee John Tseng-Chung
Mayampurath Ramakumar
Cannone Peter III
Moloney Jacqueline F
Taranto Eric Robert
Batra Raj
Burke Kathleen Flaherty
Jabre Wissam G
Williams John Edward
Warner Michelle M
Bagshaw Seth H
Gitin Mark Milton
Carlyle Partners VI Cayman Holdings LP
CEP IV Managing GP Holdings Ltd
Cap IV LLC
Cap IV General Partner LP
Carlyle Asia Partners IV LP
CEP IV Managing GP LP
CEP IV Participations Sa rl SICAR
Gamma Holding Co Ltd
Carlyle Holdings II GP LLC
TC Group Cayman Investment Holdings Sub LP
Carlyle Holdings II LLC
TC Group VI Cayman LP
Carlyle Group Inc
CG Subsidiary Holdings LLC
TC Group VI Cayman LLC
TC Group Cayman Investment Holdings LP
Wild Geoffrey
Henry Janice K
Beecher Gregory R
Hess Rick D
Chute Richard S
Bertucci John R
Abrams John R
Hanley Peter
Quirk Brian Charles
Werth Dennis L
Phillippy Robert J
Anderson Robert R
Amon Cristina
Eyerman Paul
Loomis Paul
Berlinghieri Leo
Smith John Alexander
Stewart William D
Valente Louis P
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Moloney Jacqueline F
Common Stock
2026-03-12 Sell 340.11 $213.77 72,705
Taranto Eric Robert
Common Stock
2026-03-06 Sell 4,567.88 $220.52 1,007,309
Mora Elizabeth
Common Stock
2026-03-02 Sell 300 $239.44 71,832
Schreiner James Alan
Common Stock
2026-02-24 Sell 4,100 $255.00 1,045,500
Colella Gerald G
Common Stock
2026-02-24 Sell 10,000 $253.97 2,539,700
Lee John Tseng-Chung
Common Stock
2026-02-20 Sell 12,812 $256.93 3,291,787
McCarthy Michelle M
Common Stock
2026-02-20 Sell 650 $249.57 162,220
McCarthy Michelle M
Common Stock
2026-02-20 Sell 816 $250.35 204,286
Lee John Tseng-Chung
Common Stock
2026-02-20 Sell 1,988 $257.81 512,526
Williams John Edward
Common Stock
2026-02-20 Sell 2,042.63 $256.41 523,751
Moloney Jacqueline F
Common Stock
2026-02-20 Sell 829 $247.55 205,219
Lee John Tseng-Chung
Common Stock
2026-02-20 Sell 13,310 $256.05 3,408,026
Taranto Eric Robert
Common Stock
2026-02-20 Sell 1,452.73 $247.55 359,623
Burke Kathleen Flaherty
Common Stock
2026-02-20 Sell 4,254 $250.00 1,063,500
Cannone Peter III
Common Stock
2026-02-20 Sell 1,250 $258.06 322,575
Henry David Philip
Common Stock
2026-02-20 Sell 2,000 $261.56 523,120
Colella Gerald G
Common Stock
2026-02-20 Sell 10,000 $252.90 2,529,000
Lee John Tseng-Chung
Common Stock
2026-02-20 Sell 1,890 $259.70 490,833
Henry David Philip
Common Stock
2026-02-17 Option exercise 1,840.64
Burke Kathleen Flaherty
Common Stock
2026-02-17 Option exercise 562.54
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 618 66,463,100
2025-12-31 517 68,687,243
2025-09-30 439 69,609,945
2025-06-30 399 71,841,825
2025-03-31 402 68,614,732
2024-12-31 419 67,594,548
2024-09-30 411 65,123,948
2024-06-30 398 64,017,345
2024-03-31 349 63,408,370
2023-12-31 331 59,824,610
2023-09-30 322 61,424,530
2023-06-30 322 63,397,357
Form 13F Holdings
Firm Period DFND Voting Shares
GHP Investment Advisors Inc [2026-06-30] SOLE 49,232 50,097
Swedbank AB [2026-06-30] DFND 27,000 27,000
Assenagon Asset Management SA [2026-06-30] SOLE 24,009 24,009
Oliver Luxxe Assets LLC [2026-06-30] SOLE 0 23,048
Prevail Innovative Wealth Advisors LLC [2026-06-30] SOLE 0 19,862
Louisiana State Employees Retirement System [2026-06-30] SOLE 19,500 19,500
Yousif Capital Management LLC [2026-06-30] SOLE 5,619 18,670
Y-Intercept Hong Kong Ltd [2026-06-30] SOLE 17,213 17,213
Commonwealth of Pennsylvania Public School Empls Retrmt SYS [2026-06-30] SOLE 16,170 16,170
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 529 15,518
Linden Thomas Advisory Services LLC [2026-06-30] SOLE 0 8,267
Brookstone Capital Management [2026-06-30] SOLE 0 7,030
Alaska Retirement Management Board [2026-06-30] SOLE 6,619 6,619
Neville Rodie & Shaw Inc [2026-06-30] SOLE 0 4,360
Capstone Capital Management Ltd [2026-06-30] SOLE 4,123 4,123
QRG Capital Management Inc [2026-06-30] SOLE 4,121 4,121
Fairvoy Private Wealth LLC [2026-06-30] SOLE 0 4,108
Wedmont Private Capital [2026-06-30] SOLE 0 4,098
Crossmark Global Holdings Inc [2026-06-30] SOLE 3,866 3,866
Fulton Bank NA [2026-06-30] SOLE 3,857 3,857
Merit Financial Group LLC [2026-06-30] OTR 0 3,724
Aaron Wealth Advisors LLC [2026-06-30] SOLE 3,281 3,281
Gamma Investing LLC [2026-06-30] DFND 3,231 3,231
Gateway Investment Advisers LLC [2026-06-30] SOLE 2,988 2,988
Venturi Wealth Management LLC [2026-06-30] OTR 0 2,487
Counterpoint Mutual Funds LLC [2026-06-30] SOLE 2,430 2,430
Fifth Third Wealth Advisors LLC [2026-06-30] SOLE 2,147 2,147
Sequoia Financial Advisors LLC [2026-06-30] SOLE 0 1,961
Diversified Trust Co [2026-06-30] SOLE 513 1,700
Versant Capital Management Inc [2026-06-30] SOLE 1,649 1,649
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