A business in context

UCTT research notebook

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

Research JSON

Filing timeline

Download filings CSV

SEC submissions · retrieved 2026-10-20 · 8029 issuers; up to 32 recent company reports and 8 ownership-change filings per issuer

  1. 4 · Ownership change

    Report date 2026-09-30 · 0000950103-26-015166

  2. 8-K · Current report

    Report date 2026-09-28 · 0001628280-26-063977 · Items 5.02

  3. 4 · Ownership change

    Report date 2026-08-31 · 0000950103-26-013632

  4. 4 · Ownership change

    Report date 2026-08-31 · 0000950103-26-013530

  5. 8-K · Current report

    Report date 2026-08-14 · 0000950103-26-012379 · Items 1.01,9.01

  6. 8-K · Current report

    Report date 2026-08-04 · 0001628280-26-054369 · Items 5.02,9.01

  7. 10-Q · Quarterly report

    Report date 2026-06-26 · 0001628280-26-052540

  8. 8-K · Current report

    Report date 2026-08-03 · 0001628280-26-051853 · Items 2.02,9.01

  9. 8-K · Current report

    Report date 2026-07-02 · 0001628280-26-047655 · Items 5.02,9.01

  10. 4 · Ownership change

    Report date 2026-07-02 · 0000950103-26-010375

  11. 4 · Ownership change

    Report date 2026-06-26 · 0000950103-26-009883

  12. 4 · Ownership change

    Report date 2026-06-04 · 0000950103-26-008737

  13. 4 · Ownership change

    Report date 2026-06-04 · 0000950103-26-008736

  14. 4 · Ownership change

    Report date 2026-06-04 · 0000950103-26-008671

  15. 8-K · Current report

    Report date 2026-05-22 · 0001628280-26-038205 · Items 5.07

  16. 10-Q/A · Quarterly report

    Report date 2026-03-27 · 0001628280-26-029413

  17. 10-Q · Quarterly report

    Report date 2026-03-27 · 0001628280-26-028365

  18. 8-K · Current report

    Report date 2026-04-28 · 0001628280-26-028020 · Items 9.01

  19. 8-K · Current report

    Report date 2026-04-28 · 0001628280-26-027952 · Items 9.01

  20. DEF 14A · Proxy statement

    Report date 2026-05-22 · 0001140361-26-016813

  21. 8-K · Current report

    Report date 2026-04-23 · 0000950103-26-006157 · Items 1.01,2.03,9.01

  22. 8-K · Current report

    Report date 2026-02-26 · 0000950103-26-003139 · Items 1.01,2.03,3.02,9.01

  23. 8-K · Current report

    Report date 2026-02-26 · 0000950103-26-002821 · Items 1.01,8.01,9.01

  24. 8-K · Current report

    Report date 2026-02-25 · 0000950103-26-002636 · Items 8.01,9.01

  25. 10-K · Annual report

    Report date 2025-12-26 · 0001628280-26-010744

  26. 8-K · Current report

    Report date 2026-02-23 · 0001628280-26-010607 · Items 9.01

  27. 8-K · Current report

    Report date 2026-01-25 · 0001628280-26-003715 · Items 5.02

  28. 10-Q · Quarterly report

    Report date 2025-09-26 · 0001628280-25-047117

  29. 8-K · Current report

    Report date 2025-10-23 · 0001628280-25-046810 · Items 2.02,8.01,9.01

  30. 8-K · Current report

    Report date 2025-09-15 · 0001275014-25-000007 · Items 1.01,2.03,9.01

  31. 8-K · Current report

    Report date 2025-08-04 · 0001628280-25-038545 · Items 5.02,9.01

  32. 10-Q · Quarterly report

    Report date 2025-06-27 · 0001628280-25-036413

  33. 8-K · Current report

    Report date 2025-07-28 · 0001628280-25-036187 · Items 2.02,9.01

  34. 8-K · Current report

    Report date 2025-06-30 · 0001628280-25-033496 · Items 5.02

  35. 8-K · Current report

    Report date 2025-05-21 · 0001628280-25-027946 · Items 5.07

  36. 10-Q · Quarterly report

    Report date 2025-03-28 · 0001628280-25-020658

  37. 8-K · Current report

    Report date 2025-04-28 · 0001628280-25-020279 · Items 2.02,9.01

  38. DEF 14A · Proxy statement

    Report date 2025-05-21 · 0001140361-25-016015

  39. 8-K · Current report

    Report date 2025-03-05 · 0001628280-25-010414 · Items 5.02,9.01

  40. 10-K · Annual report

    Report date 2024-12-27 · 0001628280-25-007865

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: 1 transaction rows1FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

5 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-08-31
2026-09-04
Keogh Michael DennisA · Grant / award
Acquired
Common Stock20917.00.0
2026-08-31
2026-09-02
Cook Christopher SF · Tax / exercise payment
Disposed
Common Stock12497.067.83
2026-07-02
2026-07-07
HARDING BRIAN E
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock1203.0130.12
2026-07-02
2026-07-07
HARDING BRIAN E
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock2194.0128.37
2026-07-02
2026-07-07
HARDING BRIAN E
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock440.0126.92

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 · 0001275014Ultra Clean Holdings, 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
  • ULTRA CLEAN HOLDINGS INC · former SEC name · 2004-01-14 to 2015-02-17

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
2024-12-27$2.10B$2.25B
2023-12-29$1.73B$1.92B
2022-12-30$2.37B$2.73B
2021-12-31$2.10B$2.61B
2020-12-25$1.40B$1.82B
2019-12-27$1.07B$1.41B
2018-12-28$1.10B$1.47B

Bureau of Labor Statistics · retrieved 2026-10-20 · 9 selected series; gaps remain missing

Explore the CPI history ↗