Follow The Filings

MKSI MKS Instruments Inc.

Information Technology, filed as MKS INSTRS INC (COM), Equity As of 2026 Q3 among managers we track Quote on Google Finance, opens in a new tab

Bought by 4 managers in 2026 Q2, sold by 2

  • 1 Owner
  • #192
  • Max 2.1%
  • Master 0.06%
  • $12M
  • 1 add

In 2026 Q3 Ryan Packard added to MKS Instruments.

Who owns this now

Largest portfolio weights among holders, up to 2.1% (Ryan Packard, Hiddenite Capital Partners). Not free-float ownership.

  1. Ryan Packard Add 2.1%

Who owns MKSI

Sorted by value, long equity only, as of 2026 Q3.

History
Ryan Packard, Hiddenite Capital Partners 2.1%, was 1.1% Add +52.5% 45,000 $12M History

1 current, options excluded

Weight bar: held both quarters added sold at this quarter’s reported price

Insider trades

Open-market buys and sales by MKSI's executives, directors and 10% owners in the last 12 months, from their Form 4s

All MKSI insider trades
  • None no insider bought on the open market
  • $25.5M sold by 11 insiders outside a trading plan
  • $17.9M sold by 8 insiders under 10b5-1 plans
  1. Elizabeth Mora Director
    Planned sale
    $75K 300 shares at $250.96 1.6% of stake
    Traded Sep 1 Filed Sep 2
    ↗
  2. John Tseng-Chung Lee CEO
    Planned sale
    $3M 10,000 shares at $302.01 6.9% of stake
    Traded Aug 14 Filed Aug 17
    ↗
  3. John Edward Williams EVP & GM, Psd
    Planned sale
    $132K 457 shares at $288.31 10% of stake
    Traded Aug 3 Filed Aug 4
    ↗
  4. James Alan Schreiner COO
    Sale
    $1.2M 3,500 shares at $345.82 15% of stake
    Traded Jun 12 Filed Jun 16
    ↗
  5. James Alan Schreiner COO
    Planned sale
    $248K 781 shares at $317.42 3.3% of stake
    Traded Jun 10 Filed Jun 11
    ↗
  6. Michelle M McCarthy SVP & Chief Accounting Officer
    Planned sale
    $767K 2,434 shares at $315.23 100% of stake
    Traded Jun 5 Filed Jun 8
    ↗
  7. David Philip Henry EVP, Global Str Mktg & GM, MSD
    Sale
    $1.9M 6,000 shares at $314.43 37% of stake
    Traded Jun 1 Filed Jun 2
    ↗
  8. Elizabeth Mora Director
    Planned sale
    $95K 300 shares at $318.02 1.5% of stake
    Traded Jun 1 Filed Jun 2
    ↗
  9. Joseph B Donahue Director
    Sale
    $689K 2,100 shares at $327.95 17% of stake
    Traded May 27 Filed May 28
    ↗
  10. Gerald G Colella Director
    Planned sale
    $6.7M 20,000 shares at $333.40 50% of stake
    Traded May 27 Filed May 28
    ↗
  11. David Philip Henry EVP, Global Str Mktg & GM, MSD
    Planned sale
    $826K 2,500 shares at $330.50 13% of stake
    Traded May 26 Filed May 27
    ↗
  12. Ramakumar Mayampurath CFO
    Planned sale
    $2.8M 8,810 shares at $315.48 100% of stake
    Traded May 22 Filed May 26
    ↗
  13. John Tseng-Chung Lee CEO
    Planned sale
    $3.2M 10,000 shares at $315.48 6.5% of stake
    Traded May 22 Filed May 26
    ↗
  14. Peter Cannone III Director
    Sale
    $410K 1,350 shares at $303.40 15% of stake
    Traded May 18 Filed May 19
    ↗
  15. Jacqueline F Moloney Director
    Sale
    $312K 1,000 shares at $312.20 10% of stake
    Traded May 14 Filed May 15
    ↗

Also filed in the last 12 months, not counted as buying or selling: 41 option exercises, 10 share withholdings for taxes, and 7 stock grants.

Congress

1 member of Congress traded MKSI in the last three years: 2 buys and 2 sales.

All Congress trades
  1. Lisa C. McClain R-MI-9Spouse Sell $1K–$15K Oct 31, 2025 filed Nov 21, 2025
  2. Lisa C. McClain R-MI-9Spouse Buy $1K–$15K Oct 30, 2025 filed Nov 21, 2025
  3. Lisa C. McClain R-MI-9Spouse Sell $1K–$15K Oct 30, 2025 filed Nov 21, 2025
  4. Lisa C. McClain R-MI-9Spouse Buy $1K–$15K Aug 4, 2025 filed Sep 12, 2025

SEC filings

Recent issuer filings from EDGAR, 12 shown.

Filed Form Detail Links
8-K 8.01,9.01 Filing Doc
SCHEDULE 13G/A — Filing Doc
10-Q Filing Doc
8-K 2.02,9.01 Filing Doc
SCHEDULE 13G/A — Filing Doc
SCHEDULE 13G — Filing Doc
8-K 5.02,5.07,9.01 Filing Doc
10-Q Filing Doc
SCHEDULE 13G/A — Filing Doc
8-K 2.02,9.01 Filing Doc
SCHEDULE 13G — Filing Doc
SCHEDULE 13G — Filing Doc

Source: SEC EDGAR submissions, updated 13 days ago. All on EDGAR

Financials

US-GAAP annual figures by fiscal year, as tagged in Form 10-K. Each value links to its SEC filing.

Income statement

Metric FY2023 FY2024 FY2025
Revenue $3.62B $3.59B $3.93B
Gross profit $1.64B $1.71B $1.84B
Gross margin * 45.3% 47.6% 46.7%
Net income -$1.84B $0.19B $0.295B
Net margin * -50.8% 5.3% 7.5%

Balance sheet

Metric FY2023 FY2024 FY2025
Total current assets $2.7B $2.47B $2.51B
Total non-current assets * $6.42B $6.12B $6.29B
Total assets $9.12B $8.59B $8.8B
Total current liabilities $848M $775M $927M
Total non-current liabilities * $5.8B $5.49B $5.15B
Total equity $2.47B $2.32B $2.72B

Cash flow

Metric FY2023 FY2024 FY2025
Cash from operations $319M $528M $645M
Cash from investing -$84M -$117M -$145M
Cash from financing -$259M -$549M -$562M
Net change in cash -$34M -$161M -$39M

Source: SEC companyfacts (US-GAAP 10-K). A * marks a computed figure, not a single XBRL tag. Fiscal years are as the issuer labels them. Follow The Filings does not adjust or audit these figures.

Ownership over time

13Fs that reported it each quarter. Click a bar for that quarter’s holders.