A business in context

UPB 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 2026-09-16 · 0001193125-26-394330

  2. 4 · Ownership change

    Report date 2026-09-16 · 0001193125-26-394325

  3. 4 · Ownership change

    Report date 2026-09-16 · 0001193125-26-394324

  4. 4 · Ownership change

    Report date 2026-09-16 · 0001193125-26-394322

  5. 4 · Ownership change

    Report date 2026-09-16 · 0001193125-26-394318

  6. 8-K · Current report

    Report date 2026-09-01 · 0001193125-26-377485 · Items 7.01,8.01,9.01

  7. 10-Q · Quarterly report

    Report date 2026-06-30 · 0001193125-26-343417

  8. 8-K · Current report

    Report date 2026-08-11 · 0001193125-26-343407 · Items 2.02,9.01

  9. 4 · Ownership change

    Report date 2026-06-16 · 0001193125-26-274126

  10. 4 · Ownership change

    Report date 2026-06-16 · 0001193125-26-274125

  11. 4 · Ownership change

    Report date 2026-06-16 · 0001193125-26-274122

  12. 8-K · Current report

    Report date 2026-06-09 · 0001193125-26-265800 · Items 5.07

  13. 10-Q · Quarterly report

    Report date 2026-03-31 · 0001193125-26-220584

  14. 8-K · Current report

    Report date 2026-05-13 · 0001193125-26-220578 · Items 2.02,9.01

  15. DEF 14A · Proxy statement

    Report date 2026-06-09 · 0001193125-26-158966

  16. 8-K · Current report

    Report date 2026-03-26 · 0001193125-26-126572 · Items 1.01,9.01

  17. 10-K · Annual report

    Report date 2025-12-31 · 0001193125-26-126188

  18. 8-K · Current report

    Report date 2026-03-26 · 0001193125-26-125057 · Items 2.02,9.01

  19. 8-K · Current report

    Report date 2026-02-11 · 0001193125-26-045649 · Items 2.02,7.01,9.01

  20. 8-K · Current report

    Report date 2026-02-11 · 0001193125-26-045500 · Items 7.01,8.01,9.01

  21. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001193125-25-265713

  22. 8-K · Current report

    Report date 2025-11-05 · 0001193125-25-265705 · Items 2.02,9.01

  23. 8-K · Current report

    Report date 2025-09-02 · 0002022626-25-000005 · Items 7.01,8.01,9.01

  24. 10-Q · Quarterly report

    Report date 2025-06-30 · 0000950170-25-103534

  25. 8-K · Current report

    Report date 2025-08-06 · 0000950170-25-103528 · Items 2.02,9.01

  26. 8-K · Current report

    Report date 2025-06-10 · 0000950170-25-085374 · Items 5.07

  27. 10-Q · Quarterly report

    Report date 2025-03-31 · 0000950170-25-063957

  28. 8-K · Current report

    Report date 2025-05-06 · 0000950170-25-063954 · Items 2.02,9.01

  29. DEF 14A · Proxy statement

    Report date 2025-06-10 · 0000950170-25-055372

  30. 10-K · Annual report

    Report date 2024-12-31 · 0000950170-25-037621

  31. 8-K · Current report

    Report date 2025-03-12 · 0000950170-25-037619 · Items 2.02,9.01

  32. 10-Q · Quarterly report

    Report date 2024-09-30 · 0000950170-24-122793

  33. 8-K · Current report

    Report date 2024-11-07 · 0000950170-24-122784 · Items 2.02,9.01

  34. SC 13G · Ownership disclosure

    0000315066-24-002584

  35. SC 13D · Ownership disclosure

    0001193125-24-241045

  36. SC 13G · Ownership disclosure

    0001193125-24-239740

  37. SC 13D · Ownership disclosure

    0000947871-24-000805

  38. 8-K · Current report

    Report date 2024-10-10 · 0001193125-24-237580 · Items 5.03,9.01

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: 5 transaction rows5SGrant / award: 0 transaction rows0AExercise / conversion: 0 transaction rows0MTax / exercise payment: 0 transaction rows0FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

5 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-09-16
2026-09-17
Deykin AaronS · Sale
Disposed
Common Stock895.05.49
2026-09-16
2026-09-17
Sutherland Everett RandS · Sale
Disposed
Common Stock2095.05.49
2026-09-16
2026-09-17
Houghton AdamS · Sale
Disposed
Common Stock700.05.49
2026-09-16
2026-09-17
GRAY MICHAELS · Sale
Disposed
Common Stock853.05.49
2026-09-16
2026-09-17
Ambrose AllisonS · Sale
Disposed
Common Stock485.05.49

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 · 0002022626Upstream Bio, 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
    2024-12-31$2.37M$2.55M
    2023-12-31$2.38M$2.63M

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

    Explore the CPI history ↗