A business in context

FORM 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 2026-10-14 · 0001628280-26-065922

  2. 8-K · Current report

    Report date 2026-10-06 · 0001039399-26-000037 · Items 3.02,7.01,9.01

  3. 4 · Ownership change

    Report date 2026-09-16 · 0001628280-26-062602

  4. 4 · Ownership change

    Report date 2026-09-03 · 0001628280-26-060753

  5. 4 · Ownership change

    Report date 2026-08-14 · 0001628280-26-057485

  6. 4 · Ownership change

    Report date 2026-08-06 · 0001628280-26-055434

  7. 4 · Ownership change

    Report date 2026-08-06 · 0001628280-26-055427

  8. 4 · Ownership change

    Report date 2026-08-05 · 0001628280-26-054951

  9. 4 · Ownership change

    Report date 2026-08-05 · 0001628280-26-054948

  10. 10-Q · Quarterly report

    Report date 2026-06-27 · 0001039399-26-000033

  11. 8-K · Current report

    Report date 2026-07-29 · 0001039399-26-000030 · Items 2.02,9.01

  12. 8-K · Current report

    Report date 2026-05-15 · 0001039399-26-000025 · Items 5.02,5.03,5.07,9.01

  13. 10-Q · Quarterly report

    Report date 2026-03-28 · 0001039399-26-000023

  14. 8-K · Current report

    Report date 2026-04-29 · 0001039399-26-000020 · Items 2.02,9.01

  15. DEF 14A · Proxy statement

    Report date 2026-05-15 · 0001039399-26-000016

  16. 10-K · Annual report

    Report date 2025-12-27 · 0001039399-26-000009

  17. 8-K · Current report

    Report date 2026-02-13 · 0001039399-26-000007 · Items 5.02,7.01,9.01

  18. 8-K · Current report

    Report date 2026-02-04 · 0001039399-26-000004 · Items 2.02,9.01

  19. 8-K · Current report

    Report date 2026-01-05 · 0001039399-26-000002 · Items 2.05,2.06

  20. 10-Q · Quarterly report

    Report date 2025-09-27 · 0001039399-25-000113

  21. 8-K · Current report

    Report date 2025-10-29 · 0001039399-25-000110 · Items 2.02,9.01

  22. 8-K · Current report

    Report date 2025-08-12 · 0001104659-25-076856 · Items 5.02,7.01,9.01

  23. 10-Q · Quarterly report

    Report date 2025-06-28 · 0001039399-25-000083

  24. 8-K · Current report

    Report date 2025-07-29 · 0001039399-25-000077 · Items 1.01,2.02,2.03,5.03,9.01

  25. 8-K · Current report

    Report date 2025-05-16 · 0001039399-25-000063 · Items 5.02,5.07,9.01

  26. 10-Q · Quarterly report

    Report date 2025-03-29 · 0001039399-25-000038

  27. 8-K · Current report

    Report date 2025-04-30 · 0001039399-25-000033 · Items 2.02,9.01

  28. DEF 14A · Proxy statement

    Report date 2025-05-16 · 0001140361-25-011850

  29. 10-K · Annual report

    Report date 2024-12-28 · 0001039399-25-000023

  30. 8-K · Current report

    Report date 2025-02-05 · 0001039399-25-000008 · Items 2.02,9.01

  31. 10-Q · Quarterly report

    Report date 2024-09-28 · 0001039399-24-000035

  32. 8-K · Current report

    Report date 2024-10-30 · 0001039399-24-000030 · Items 2.02,9.01

  33. 10-Q · Quarterly report

    Report date 2024-06-29 · 0001039399-24-000028

  34. 8-K · Current report

    Report date 2024-07-31 · 0001039399-24-000025 · Items 2.02,9.01

  35. 8-K · Current report

    Report date 2024-05-17 · 0001039399-24-000020 · Items 5.07

  36. 10-Q · Quarterly report

    Report date 2024-03-30 · 0001039399-24-000016

  37. 8-K · Current report

    Report date 2024-05-01 · 0001039399-24-000013 · Items 2.02,9.01

  38. DEF 14A · Proxy statement

    Report date 2024-05-17 · 0001140361-24-016895

  39. 8-K · Current report

    Report date 2024-03-17 · 0001039399-24-000011 · Items 5.02,8.01

  40. 10-K · Annual report

    Report date 2023-12-30 · 0001039399-24-000007

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: 16 transaction rows16SGrant / award: 3 transaction rows3AExercise / conversion: 12 transaction rows12MTax / exercise payment: 6 transaction rows6FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

37 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-09-16
2026-09-17
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock1000.0105.8
2026-09-16
2026-09-17
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock8737.0104.26
2026-09-16
2026-09-17
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock7773.0105.12
2026-09-03
2026-09-04
STEVEN-WAISS KELLEYS · Sale
Disposed
Common Stock2100.096.1
2026-08-14
2026-08-17
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock2482.0128.72
2026-08-14
2026-08-17
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock2892.0129.55
2026-08-14
2026-08-17
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock686.0133.33
2026-08-14
2026-08-17
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock1125.0131.65
2026-08-14
2026-08-17
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock5535.0132.5
2026-08-14
2026-08-17
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock3282.0130.54
2026-08-07
2026-08-10
SLESSOR MIKEM · Exercise / conversion
Acquired
Common Stock141792.00.0
2026-08-07
2026-08-10
SLESSOR MIKEF · Tax / exercise payment
Disposed
Common Stock78908.0117.39
2026-08-07
2026-08-10
SLESSOR MIKEM · Exercise / conversion
Acquired
Common Stock5908.00.0
2026-08-07
2026-08-10
SLESSOR MIKEF · Tax / exercise payment
Disposed
Common Stock3288.0117.39
2026-08-07
2026-08-10
SLESSOR MIKEA · Grant / award
Acquired
Performance-based Restricted Stock Units
Derivative security
141792.00.0
2026-08-07
2026-08-10
SLESSOR MIKEM · Exercise / conversion
Disposed
Performance-based Restricted Stock Units
Derivative security
141792.00.0
2026-08-07
2026-08-10
SLESSOR MIKEM · Exercise / conversion
Disposed
Restricted Stock Units
Derivative security
5908.00.0
2026-08-06
2026-08-10
SLESSOR MIKEA · Grant / award
Acquired
Restricted Stock Units
Derivative security
27696.00.0
2026-08-06
2026-08-10
McKinnis Aric BrendanA · Grant / award
Acquired
Restricted Stock Units
Derivative security
6924.00.0
2026-08-06
2026-08-07
SLESSOR MIKEM · Exercise / conversion
Acquired
Common Stock6031.00.0
2026-08-06
2026-08-07
SLESSOR MIKEF · Tax / exercise payment
Disposed
Common Stock3357.0115.21
2026-08-06
2026-08-07
SLESSOR MIKEM · Exercise / conversion
Disposed
Restricted Stock Units
Derivative security
6031.00.0
2026-08-06
2026-08-07
McKinnis Aric BrendanF · Tax / exercise payment
Disposed
Common Stock274.0115.21
2026-08-06
2026-08-07
McKinnis Aric BrendanM · Exercise / conversion
Acquired
Common Stock1099.00.0
2026-08-06
2026-08-07
McKinnis Aric BrendanM · Exercise / conversion
Disposed
Restricted Stock Units
Derivative security
1099.00.0
2026-08-05
2026-08-07
SLESSOR MIKEF · Tax / exercise payment
Disposed
Common Stock2028.0114.44
2026-08-05
2026-08-07
SLESSOR MIKEM · Exercise / conversion
Acquired
Common Stock3644.00.0
2026-08-05
2026-08-07
SLESSOR MIKEM · Exercise / conversion
Disposed
Restricted Stock Units
Derivative security
3644.00.0
2026-08-05
2026-08-07
McKinnis Aric BrendanF · Tax / exercise payment
Disposed
Common Stock130.0114.44
2026-08-05
2026-08-07
McKinnis Aric BrendanM · Exercise / conversion
Acquired
Common Stock521.00.0
2026-08-05
2026-08-07
McKinnis Aric BrendanM · Exercise / conversion
Disposed
Restricted Stock Units
Derivative security
521.00.0
2026-07-15
2026-07-16
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock1650.0117.39
2026-07-15
2026-07-16
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock706.0118.21
2026-07-15
2026-07-16
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock300.0120.58
2026-07-15
2026-07-16
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock868.0121.3
2026-07-15
2026-07-16
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock1041.0116.56
2026-07-15
2026-07-16
SLESSOR MIKE
10b5-1 checkbox reported
S · Sale
Disposed
Common Stock170.0119.08

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 · 0001039399FORMFACTOR 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

    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
    2024-12-28$763.60M$820.27M
    2023-12-30$663.10M$733.23M
    2022-12-31$747.94M$861.64M
    2021-12-25$769.67M$957.86M
    2020-12-26$693.62M$903.13M
    2019-12-28$589.46M$776.94M
    2018-12-29$529.67M$710.74M
    2017-12-30$548.44M$753.88M

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

    Explore the CPI history ↗