Sionna Therapeutics, Inc. (SION)

Nasdaq · Pharmaceutical Preparations · Inc. DE

What they're doing

Between 2026-06-21 and 2026-09-19, public records show 5 signals for Sionna Therapeutics, Inc.. Most notable: 2026-09-14: Filed 8-K disclosing director or officer change; 2026-06-30: Thompson Peter A. (director) sold $5.3M of stock; 2026-06-30: ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLC (director) sold $5.3M of stock. Federal contract obligations over the last 24 months total $0. This summary was assembled automatically from SEC EDGAR, USAspending.gov, U.S. Senate lobbying disclosures and Wikimedia pageview counts.

Generated 2026-09-19 from public records.

Signals, last 12 months

  1. Large insider sale
    RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund, L.P.; RA Capital Nexus Fund III, L.P.; Kolchinsky Peter; Shah Rajeev M. (director) sold $21.6M of stock
  2. Material 8-K filing
    Filed 8-K disclosing director or officer change
  3. Large insider sale
    ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLC (director) sold $3.9M of stock
  4. Large insider sale
    Thompson Peter A. (director) sold $3.9M of stock
  5. Large insider sale
    ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLC (director) sold $5.3M of stock
  6. Large insider sale
    Thompson Peter A. (director) sold $5.3M of stock
  7. Large insider sale
    Thompson Peter A. (director) sold $8.5M of stock
  8. Large insider sale
    ORBIMED ADVISORS LLC (director) sold $8.5M of stock
  9. Large insider sale
    Thompson Peter A. (director) sold $2.7M of stock
  10. Large insider sale
    ORBIMED ADVISORS LLC (director) sold $2.7M of stock
  11. Large insider sale
    Thompson Peter A. (director) sold $2.2M of stock
  12. Large insider sale
    ORBIMED ADVISORS LLC (director) sold $2.2M of stock
  13. Large insider sale
    Thompson Peter A. (director) sold $2.3M of stock
  14. Large insider sale
    ORBIMED ADVISORS LLC (director) sold $2.3M of stock
  15. Large insider sale
    Thompson Peter A. (director) sold $10.3M of stock
  16. Large insider sale
    ORBIMED ADVISORS LLC (director) sold $10.3M of stock
  17. Large insider sale
    ORBIMED ADVISORS LLC (director) sold $10.5M of stock
  18. Large insider sale
    Thompson Peter A. (director) sold $10.5M of stock
  19. Large insider sale
    ORBIMED ADVISORS LLC (director) sold $2.1M of stock
  20. Large insider sale
    Thompson Peter A. (director) sold $2.1M of stock
  21. Large insider sale
    Thompson Peter A. (director) sold $1.3M of stock
  22. Large insider sale
    OrbiMed Capital GP VIII LLC (director) sold $1.3M of stock
  23. Large insider sale
    WINKELRIED JON (ten_percent_owner) sold $10.0M of stock
  24. Large insider sale
    OrbiMed Capital GP VIII LLC (director) sold $1.5M of stock
  25. Large insider sale
    Thompson Peter A. (director) sold $1.5M of stock
  26. Large insider sale
    ORBIMED ADVISORS LLC (director) sold $4.2M of stock
  27. Large insider sale
    Thompson Peter A. (director) sold $4.2M of stock
  28. Large insider sale
    Thompson Peter A. (director) sold $4.2M of stock
  29. Large insider sale
    RA Capital Nexus Fund III, L.P. (director) sold $1.2M of stock
  30. Large insider sale
    RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund, L.P.; RA Capital Nexus Fund III, L.P.; Kolchinsky Peter; Shah Rajeev M. (director) sold $4.3M of stock
  31. Large insider sale
    RA Capital Nexus Fund III, L.P. (director) sold $4.8M of stock
  32. Large insider sale
    RA Capital Nexus Fund III, L.P. (director) sold $4.3M of stock
  33. Large insider sale
    RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund, L.P.; RA Capital Nexus Fund III, L.P.; Kolchinsky Peter; Shah Rajeev M. (director) sold $2.6M of stock
  34. Large insider sale
    RA Capital Nexus Fund III, L.P. (director) sold $2.6M of stock
  35. Large insider sale
    Cloonan Michael (director) sold $1.3M of stock
  36. Large insider sale
    Cloonan Michael (director) sold $1.3M of stock
  37. Large insider sale
    Cloonan Michael (director) sold $1.1M of stock
  38. Large insider sale
    Cloonan Michael (director) sold $1.1M of stock
  39. Large insider sale
    Booth Bruce (director) sold $2.4M of stock
  40. Large insider sale
    Booth Bruce (director) sold $2.4M of stock
  41. Large insider sale
    Booth Bruce (director) sold $1.4M of stock
  42. Large insider sale
    Booth Bruce (director) sold $1.4M of stock
  43. Large insider sale
    Booth Bruce (director) sold $2.0M of stock
  44. Large insider sale
    Booth Bruce (director) sold $2.0M of stock
  45. Large insider sale
    Booth Bruce (director) sold $1.3M of stock
  46. Large insider sale
    Booth Bruce (director) sold $1.3M of stock
  47. Large insider sale
    Booth Bruce (director) sold $1.6M of stock
  48. Large insider sale
    Booth Bruce (director) sold $1.6M of stock

Insider transactions

DateInsiderRoleCodeSharesPriceValue
2026-09-17RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund, L.P.; RA Capital Nexus Fund III, L.P.; Kolchinsky Peter; Shah Rajeev M.directorS33,8007.46$252,148
2026-09-17Ridloff ElenaofficerA47,2690$0
2026-09-17Ridloff ElenaofficerA47,2680$0
2026-09-17McKee CharlotteofficerA50,0000$0
2026-09-17McKee CharlotteofficerA50,0000$0
2026-09-17Fitzpatrick JenniferofficerA28,1330$0
2026-09-17Fitzpatrick JenniferofficerA28,1320$0
2026-09-17Cloonan MichaeldirectorA109,0250$0
2026-09-17Cloonan MichaeldirectorA109,0250$0
2026-09-17RA CAPITAL MANAGEMENT, L.P.; RA Capital Healthcare Fund LP; RA Capital Nexus Fund, L.P.; RA Capital Nexus Fund III, L.P.; Kolchinsky Peter; Shah Rajeev M.directorS3,415,0116.32$21,582,870
2026-07-07Thompson Peter A.directorS85,91844.86$3,854,281
2026-07-07ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLCdirectorS85,91844.86$3,854,281
2026-07-06Fitzpatrick JenniferofficerM10,2506.11$62,628
2026-07-06Fitzpatrick JenniferofficerS10,25043.6$446,862
2026-06-30Thompson Peter A.directorS115,84445.5$5,270,902
2026-06-30ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLCdirectorS115,84445.5$5,270,902
2026-05-27Thompson Peter A.directorS10144.49$4,493
2026-05-27ORBIMED ADVISORS LLCdirectorS10144.49$4,493
2026-05-27Thompson Peter A.directorS10144.49$4,493
2026-05-27ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLCdirectorS10144.49$4,493
2026-05-11Thompson Peter A.directorS184,63946.22$8,534,015
2026-05-11ORBIMED ADVISORS LLCdirectorS184,63946.22$8,534,015
2026-05-11Thompson Peter A.directorS184,63946.22$8,534,015
2026-05-11ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLCdirectorS184,63946.22$8,534,015
2026-05-08Thompson Peter A.directorS59,76744.58$2,664,413
2026-05-08ORBIMED ADVISORS LLCdirectorS59,76744.58$2,664,413
2026-05-08Thompson Peter A.directorS59,76744.58$2,664,413
2026-05-08ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLCdirectorS59,76744.58$2,664,413
2026-05-07Thompson Peter A.directorS48,54644.61$2,165,637
2026-05-07ORBIMED ADVISORS LLCdirectorS48,54644.61$2,165,637
2026-05-07Thompson Peter A.directorS48,54644.61$2,165,637
2026-05-07ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLCdirectorS48,54644.61$2,165,637
2026-04-18Thompson Peter A.directorS2,94844.52$131,245
2026-04-18ORBIMED ADVISORS LLCdirectorS2,94844.52$131,245
2026-04-18Thompson Peter A.directorS2,94844.52$131,245
2026-04-18ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLCdirectorS2,94844.52$131,245
2026-04-17Thompson Peter A.directorS52,39744.68$2,341,098
2026-04-17ORBIMED ADVISORS LLCdirectorS52,39744.68$2,341,098
2026-04-17Thompson Peter A.directorS52,39744.68$2,341,098
2026-04-17ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLCdirectorS52,39744.68$2,341,098
2026-04-16Thompson Peter A.directorS226,90645.34$10,287,918
2026-04-16ORBIMED ADVISORS LLCdirectorS226,90645.34$10,287,918
2026-04-16Thompson Peter A.directorS226,90645.34$10,287,918
2026-04-16ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLCdirectorS226,90645.34$10,287,918
2026-04-15Thompson Peter A.directorS235,86344.64$10,528,924
2026-04-15ORBIMED ADVISORS LLCdirectorS235,86344.64$10,528,924
2026-04-15Thompson Peter A.directorS235,86344.64$10,528,924
2026-04-15ORBIMED ADVISORS LLC; OrbiMed Capital GP VIII LLCdirectorS235,86344.64$10,528,924
2026-04-14Thompson Peter A.directorS47,81444.51$2,128,201
2026-04-14ORBIMED ADVISORS LLCdirectorS47,81444.51$2,128,201

Federal contracts

No federal contract actions on record for this recipient mapping.

Lobbying

No federal lobbying filings on record for this client mapping.

Public attention

No Wikipedia pageview data linked to this company.

Recent filings

  • 2026-09-21 4
  • 2026-09-21 SCHEDULE 13D/A
  • 2026-09-18 4
  • 2026-09-18 4
  • 2026-09-18 4
  • 2026-09-18 4
  • 2026-09-17 144
  • 2026-09-14 8-K
  • 2026-08-10 8-K
  • 2026-08-06 10-Q
  • 2026-08-06 8-K
  • 2026-07-09 4
  • 2026-07-09 4
  • 2026-07-07 4
  • 2026-07-06 144
  • 2026-07-02 4
  • 2026-07-02 4
  • 2026-06-18 4
  • 2026-06-18 4
  • 2026-06-18 4