A business in context

ALT 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 2026-10-01 · 0001802615-26-000002

  2. 4 · Ownership change

    Report date 2026-10-01 · 0001251779-26-000011

  3. 4 · Ownership change

    Report date 2026-10-01 · 0002156820-26-000004

  4. 8-K · Current report

    Report date 2026-09-24 · 0001326190-26-000056 · Items 5.02

  5. 4 · Ownership change

    Report date 2026-09-16 · 0001595064-26-000002

  6. 4 · Ownership change

    Report date 2026-08-13 · 0001698665-26-000007

  7. 10-Q · Quarterly report

    Report date 2026-06-30 · 0001326190-26-000052

  8. 8-K · Current report

    Report date 2026-08-12 · 0001326190-26-000049 · Items 2.02,9.01

  9. 4 · Ownership change

    Report date 2026-07-31 · 0001705905-26-000010

  10. 4 · Ownership change

    Report date 2026-07-31 · 0001251779-26-000009

  11. 8-K · Current report

    Report date 2026-07-28 · 0001326190-26-000044 · Items 7.01,8.01,9.01

  12. 8-K · Current report

    Report date 2026-06-16 · 0001104659-26-074575 · Items 8.01

  13. 10-Q · Quarterly report

    Report date 2026-03-31 · 0001326190-26-000040

  14. 8-K · Current report

    Report date 2026-05-13 · 0001326190-26-000037 · Items 2.02,9.01

  15. 4 · Ownership change

    Report date 2026-05-01 · 0001960596-26-000002

  16. 8-K · Current report

    Report date 2026-04-22 · 0001104659-26-048552 · Items 1.01,9.01

  17. 8-K · Current report

    Report date 2026-04-16 · 0001326190-26-000027 · Items 5.03,5.07,9.01

  18. DEF 14A · Proxy statement

    Report date 2026-04-16 · 0001104659-26-028953

  19. 10-K · Annual report

    Report date 2025-12-31 · 0001326190-26-000018

  20. 8-K · Current report

    Report date 2026-03-05 · 0001326190-26-000013 · Items 2.02,9.01

  21. 8-K · Current report

    Report date 2026-02-02 · 0001326190-26-000008 · Items 8.01

  22. 8-K · Current report

    Report date 2026-01-27 · 0001326190-26-000006 · Items 1.01,9.01

  23. 8-K · Current report

    Report date 2025-12-19 · 0001104659-25-122724 · Items 7.01,8.01,9.01

  24. 8-K · Current report

    Report date 2025-11-30 · 0001104659-25-117144 · Items 5.02,7.01,9.01

  25. 8-K · Current report

    Report date 2025-11-06 · 0001326190-25-000067 · Items 1.01,1.02,9.01

  26. 10-Q · Quarterly report

    Report date 2025-09-30 · 0001326190-25-000064

  27. 8-K · Current report

    Report date 2025-11-06 · 0001326190-25-000055 · Items 1.01,2.02,2.03,9.01

  28. 8-K · Current report

    Report date 2025-10-01 · 0001326190-25-000053 · Items 5.02

  29. 8-K · Current report

    Report date 2025-09-25 · 0001326190-25-000050 · Items 5.07

  30. DEF 14A · Proxy statement

    Report date 2025-09-25 · 0001326190-25-000046

  31. 8-K · Current report

    Report date 2025-08-12 · 0001558370-25-011145 · Items 2.02,9.01

  32. 10-Q · Quarterly report

    Report date 2025-06-30 · 0001326190-25-000040

  33. 8-K · Current report

    Report date 2025-06-26 · 0001326190-25-000037 · Items 7.01,8.01,9.01

  34. 10-Q · Quarterly report

    Report date 2025-03-31 · 0001326190-25-000034

  35. 8-K · Current report

    Report date 2025-05-13 · 0001326190-25-000031 · Items 1.01,2.02,2.03,7.01,9.01

  36. 8-K · Current report

    Report date 2025-03-13 · 0001326190-25-000024 · Items 8.01

  37. 10-K · Annual report

    Report date 2024-12-31 · 0001326190-25-000015

  38. 8-K · Current report

    Report date 2025-02-24 · 0001326190-25-000011 · Items 2.02,5.02,9.01

  39. 8-K · Current report

    Report date 2025-02-24 · 0001326190-25-000003 · Items 5.02,7.01,9.01

  40. 8-K · Current report

    Report date 2024-11-15 · 0001326190-24-000053 · Items 8.01

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: 1 transaction rows1PSale: 0 transaction rows0SGrant / award: 2 transaction rows2AExercise / conversion: 2 transaction rows2MTax / exercise payment: 1 transaction rows1FGift: 0 transaction rows0G
P · PurchaseS · SaleA · Grant / awardM · Exercise / conversionF · Tax / exercise paymentG · Gift

6 matching transaction rows.

Transaction / filedReporting ownerTypeSecuritySharesReported price
2026-09-16
2026-09-17
Richardson Linda MF · Tax / exercise payment
Disposed
Common Stock, par value $0.00016826.03.24
2026-09-16
2026-09-17
Richardson Linda MM · Exercise / conversion
Acquired
Common Stock, par value $0.000124000.00.0
2026-09-16
2026-09-17
Richardson Linda MM · Exercise / conversion
Disposed
Restricted Stock Units
Derivative security
24000.00.0
2026-08-13
2026-08-13
Durso Jerome BenedictP · Purchase
Acquired
Common Stock, par value $0.000115000.02.95
2026-07-31
2026-08-03
Roberts M ScotA · Grant / award
Acquired
Common Stock, par value $0.0001875.02.41
2026-07-31
2026-08-03
WEAVER GREGORY LA · Grant / award
Acquired
Common Stock, par value $0.00011753.02.41

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 · 0001326190Altimmune, 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
  • PHARMATHENE, INC · former SEC name · 2007-10-29 to 2017-05-03
  • HEALTHCARE ACQUISITION CORP · former SEC name · 2005-05-06 to 2007-10-15

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$20.0K$21.5K
2023-12-31$426.0K$471.0K
2022-12-31-$68.0K-$78.3K
2021-12-31$4.41M$5.48M

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

Explore the CPI history ↗