A business in context

ARX 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 2026-09-23 · 0001997350-26-000018 · Items 8.01,9.01

  2. 4 · Ownership change

    Report date 2026-08-21 · 0001628280-26-058964

  3. 4 · Ownership change

    Report date 2026-08-13 · 0001628280-26-057158

  4. 8-K · Current report

    Report date 2026-08-13 · 0001193125-26-349973 · Items 1.01,9.01

  5. 10-Q · Quarterly report

    Report date 2026-06-30 · 0001997350-26-000015

  6. 8-K · Current report

    Report date 2026-08-13 · 0001193125-26-347925 · Items 2.02,8.01,9.01

  7. 4 · Ownership change

    Report date 2026-08-10 · 0001628280-26-056260

  8. 4 · Ownership change

    Report date 2026-08-10 · 0001628280-26-055804

  9. 4 · Ownership change

    Report date 2026-08-03 · 0001628280-26-052848

  10. 4 · Ownership change

    Report date 2026-07-27 · 0001628280-26-050691

  11. 4 · Ownership change

    Report date 2026-07-27 · 0001628280-26-050312

  12. 4 · Ownership change

    Report date 2026-07-23 · 0001628280-26-049906

  13. 8-K · Current report

    Report date 2026-05-29 · 0001193125-26-246424 · Items 7.01,9.01

  14. 10-Q · Quarterly report

    Report date 2026-03-31 · 0001997350-26-000011

  15. 8-K · Current report

    Report date 2026-05-13 · 0001997350-26-000009 · Items 2.02,7.01,9.01

  16. 8-K · Current report

    Report date 2026-05-12 · 0001628280-26-034165 · Items 5.07

  17. DEF 14A · Proxy statement

    Report date 2026-05-12 · 0001104659-26-036368

  18. 10-K · Annual report

    Report date 2025-12-31 · 0001997350-26-000003

  19. 8-K · Current report

    Report date 2026-03-13 · 0001193125-26-113962 · Items 2.02,5.02,7.01,8.01,9.01

  20. 8-K · Current report

    Report date 2026-02-27 · 0001628280-26-012812 · Items 8.01,9.01

  21. 8-K · Current report

    Report date 2026-02-26 · 0001193125-26-079144 · Items 2.02,7.01,9.01

  22. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001997350-25-000012

  23. 8-K · Current report

    Report date 2025-11-12 · 0001997350-25-000009 · Items 2.02,7.01

  24. 10-Q · Quarterly report

    Report date 2025-06-30 · 0001997350-25-000004

  25. 8-K · Current report

    Report date 2025-08-28 · 0001193125-25-190324 · Items 2.02,9.01

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: 17 transaction rows17SGrant / award: 0 transaction rows0AExercise / conversion: 0 transaction rows0MTax / exercise payment: 1 transaction rows1FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

18 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-08-21
2026-08-25
Meriwether Karen SueS · Sale
Disposed
Class A Common Shares542.019.62
2026-08-13
2026-08-14
Hasley Nancy
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares20489.019.56
2026-08-11
2026-08-12
ONeill Francis James
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares89219.012.41
2026-08-10
2026-08-12
ONeill Francis James
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares63616.012.07
2026-08-10
2026-08-11
RADKE JEFFREY L
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares80000.012.09
2026-08-03
2026-08-04
RADKE JEFFREY L
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares80000.012.06
2026-07-28
2026-07-29
ONeill Francis James
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares104647.014.56
2026-07-27
2026-07-29
ONeill Francis James
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares110467.014.63
2026-07-27
2026-07-28
RADKE JEFFREY L
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares80000.014.63
2026-07-27
2026-07-28
RADKE JEFFREY L
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares15223.014.45
2026-07-27
2026-07-27
Sternberg Matthew David
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares17568.014.64
2026-07-23
2026-07-27
Sternberg Matthew David
10b5-1 checkbox reported
F · Tax / exercise payment
Disposed
Class A Common Shares3910.013.77
2026-07-20
2026-07-20
RADKE JEFFREY L
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares80000.013.51
2026-07-17
2026-07-20
RADKE JEFFREY L
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares14777.014.3
2026-07-15
2026-07-16
ONeill Francis James
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares82767.012.71
2026-07-14
2026-07-16
ONeill Francis James
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares83119.012.84
2026-07-13
2026-07-14
RADKE JEFFREY L
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares80000.013.18
2026-07-06
2026-07-07
RADKE JEFFREY L
10b5-1 checkbox reported
S · Sale
Disposed
Class A Common Shares80000.013.33

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 · 0001997350Accelerant Holdings

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
    2024-12-31$602.60M$647.25M
    2023-12-31$344.00M$380.37M

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

    Explore the CPI history ↗