A business in context

MKSI research notebook

Read the disclosures. Follow the relationships. Keep the dates in view.

Research JSON

Filing timeline

Download filings CSV

SEC submissions · retrieved 2026-10-22 · 8029 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. 8-K · Current report

    Report date 2026-10-19 · 0001193125-26-424709 · Items 8.01,9.01

  2. 4 · Ownership change

    Report date 2026-09-01 · 0001049502-26-000119

  3. 4 · Ownership change

    Report date 2026-08-17 · 0001049502-26-000115

  4. 4 · Ownership change

    Report date 2026-08-14 · 0001049502-26-000113

  5. 10-Q · Quarterly report

    Report date 2026-06-30 · 0001193125-26-337821

  6. 8-K · Current report

    Report date 2026-08-05 · 0001193125-26-335274 · Items 2.02,9.01

  7. 4 · Ownership change

    Report date 2026-08-03 · 0001049502-26-000111

  8. 4 · Ownership change

    Report date 2026-06-12 · 0001049502-26-000109

  9. 4 · Ownership change

    Report date 2026-06-10 · 0001049502-26-000107

  10. 4 · Ownership change

    Report date 2026-06-05 · 0001049502-26-000105

  11. 4 · Ownership change

    Report date 2026-06-01 · 0001049502-26-000100

  12. 8-K · Current report

    Report date 2026-05-11 · 0001193125-26-219474 · Items 5.02,5.07,9.01

  13. 10-Q · Quarterly report

    Report date 2026-03-31 · 0001049502-26-000062

  14. 8-K · Current report

    Report date 2026-05-06 · 0001193125-26-209140 · Items 2.02,9.01

  15. 8-K · Current report

    Report date 2026-03-31 · 0001193125-26-142945 · Items 5.02

  16. DEF 14A · Proxy statement

    Report date 2026-05-11 · 0001193125-26-133378

  17. 10-K · Annual report

    Report date 2025-12-31 · 0001193125-26-066820

  18. 8-K · Current report

    Report date 2026-02-17 · 0001193125-26-054841 · Items 2.02,9.01

  19. 8-K · Current report

    Report date 2026-02-04 · 0001193125-26-038565 · Items 1.01,2.03,7.01,9.01

  20. 8-K · Current report

    Report date 2026-01-26 · 0001193125-26-027243 · Items 8.01,9.01

  21. 8-K · Current report

    Report date 2026-01-21 · 0001193125-26-017468 · Items 2.02,7.01,9.01

  22. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001193125-25-268932

  23. 8-K · Current report

    Report date 2025-11-05 · 0001193125-25-267070 · Items 2.02,9.01

  24. 10-Q · Quarterly report

    Report date 2025-06-30 · 0001193125-25-175092

  25. 8-K · Current report

    Report date 2025-08-06 · 0000950170-25-104141 · Items 2.02,9.01

  26. 8-K · Current report

    Report date 2025-05-12 · 0000950170-25-072053 · Items 3.03,5.02,5.03,5.07,7.01,9.01

  27. 10-Q · Quarterly report

    Report date 2025-03-31 · 0000950170-25-066792

  28. 8-K · Current report

    Report date 2025-05-07 · 0000950170-25-065768 · Items 2.02,9.01

  29. DEF 14A · Proxy statement

    Report date 2025-05-12 · 0001193125-25-069811

  30. 10-K · Annual report

    Report date 2024-12-31 · 0000950170-25-026433

  31. 8-K · Current report

    Report date 2025-02-12 · 0000950170-25-018919 · Items 2.02,9.01

  32. 8-K · Current report

    Report date 2025-01-24 · 0001193125-25-011839 · Items 1.01,2.03,7.01,9.01

  33. 8-K · Current report

    Report date 2024-12-02 · 0001193125-24-269480 · Items 5.03,9.01

  34. SC 13G/A · Ownership disclosure

    0000080255-24-001383

  35. SC 13G/A · Ownership disclosure

    0002012383-24-002578

  36. 10-Q · Quarterly report

    Report date 2024-09-30 · 0000950170-24-123394

  37. 8-K · Current report

    Report date 2024-11-06 · 0000950170-24-122391 · Items 2.02,9.01

  38. 8-K · Current report

    Report date 2024-11-04 · 0001193125-24-251012 · Items 5.02,7.01,9.01

  39. SC 13G/A · Ownership disclosure

    0000080255-24-000878

  40. 8-K · Current report

    Report date 2024-08-05 · 0001193125-24-199463 · Items 5.02,7.01,9.01

Reported insider transactions

Download transactions CSV

SEC insider transactions · retrieved 2026-10-15 · 2026 Q3: filings in this completed quarter; not a live transaction feed

Purchases and sales include open-market or private transactions. Grants, exercises and tax withholding are shown separately. Amendments and joint reports can overlap; rows are not a net-buying score. Prices retain the filing's units; consult its footnotes.

Transaction rows by code · counts, not monetary totals
Purchase: 0 transaction rows0PSale: 3 transaction rows3SGrant / award: 1 transaction rows1AExercise / conversion: 0 transaction rows0MTax / exercise payment: 0 transaction rows0FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

4 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-09-01
2026-09-02
Mora Elizabeth
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock300.0250.96
2026-08-17
2026-08-18
Donlan Renee MartelA · Grant / award
Acquired
Restricted Stock Unit
Derivative security
954.04n/a
2026-08-14
2026-08-17
Lee John Tseng-Chung
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock10000.0302.01
2026-08-03
2026-08-04
Williams John Edward
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock457.0288.31

Identity & relationships

Wikidata structured data · retrieved 2026-10-15 · 1663 unambiguous CIK-linked entities; coverage is incomplete

These are sourced identity and relationship claims, with incomplete coverage. Headquarters locations do not describe sales, assets or operating exposure.

SEC issuer · 0001049502MKS INC

No parent relationship is available in this import; this is not proof of independence.

No verified LEI join available.

GLEIF legal entity reference data · retrieved 2026-10-15 · 1199 checked identities; 0 unavailable records

Search names and former names
  • MKS INSTRUMENTS INC · former SEC name · 1997-11-14 to 2025-05-15

Revenue in constant purchasing power

USD revenue expressed in 2026-09 consumer-price dollars. Each annual period uses a CPI-U average weighted by the days in its actual reporting interval. This is a purchasing-power comparison, not a company-specific price or volume measure.

Year endedReported USD revenueCPI-adjusted USD revenue
2024-12-31$3.59B$3.85B
2023-12-31$3.62B$4.00B
2022-12-31$3.55B$4.08B
2021-12-31$2.95B$3.67B
2020-12-31$2.33B$3.03B
2019-12-31$1.90B$2.50B
2018-12-31$2.08B$2.78B
2017-12-31$1.92B$2.63B

Bureau of Labor Statistics · retrieved 2026-10-22 · 9 selected series; gaps remain missing

Explore the CPI history ↗