SIONNA THERAPEUTICS INC (SION) Stock Ownership

NASDAQ:SION • US8294011080

Current stock price

38.11 USD
-0.24 (-0.63%)
At close:
38.11 USD
0 (0%)
After Hours:

SION Ownership information

SION Ownership Chart.SION Ownership Chart: showing Insider, Institutional ownership and shares available to the public.SION Ownership.InsiderInstitutionalPublic



Shares Outstanding45.00M
Float30.70M
Float Short Interest Percentage12.24%
Owners (insider)1.37%
Owners (institutional)73.33%
Owners (insider) change0%
Owners (institutional) change-0.02%
SION Institutional Ownership HistorySION Institutional Ownership HistorySION Institutional Ownership History Mar 2025 Jun 2025 Sep 2025 Dec 2025 Mar 2026 10M 20M 30M 40M
SION Historical Insider Transactions ChartSION Historical Insider Buy and Sell Transactions ChartSION Historical Insider Transactions May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 Mar 2026 Apr 2026 0 -1M -2M
DateNameTypeSharesPriceAmount
Apr 17, 2026ORBIMED ADVISORS LLCOpen Market Sale5534544.67$ 2,472,342.92
Apr 17, 2026OrbiMed Capital GP VIII LLCOpen Market Sale5534544.67$ 2,472,342.92
Apr 17, 2026Thompson Peter A.Open Market Sale5534544.67$ 2,472,342.92
Apr 14, 2026Thompson Peter A.Open Market Sale51058344.94$ 22,945,043.50
Apr 14, 2026ORBIMED ADVISORS LLCOpen Market Sale51058344.94$ 22,945,043.50
Apr 14, 2026OrbiMed Capital GP VIII LLCOpen Market Sale51058344.94$ 22,945,043.50
Feb 2, 2026ORBIMED ADVISORS LLCOpen Market Sale3095344.58$ 1,379,865.84
Feb 2, 2026OrbiMed Capital GP VIII LLCOpen Market Sale3095344.58$ 1,379,865.84
Feb 2, 2026Thompson Peter A.Open Market Sale3095344.58$ 1,379,865.84
Jan 22, 2026TPG GP A, LLCOpen Market Sale25000040.00$ 10,000,000.00
Jan 22, 2026COULTER JAMES GOpen Market Sale25000040.00$ 10,000,000.00
Jan 22, 2026WINKELRIED JONOpen Market Sale25000040.00$ 10,000,000.00
Dec 24, 2025ORBIMED ADVISORS LLCOpen Market Sale3335644.55$ 1,486,009.80
Dec 24, 2025OrbiMed Capital GP VIII LLCOpen Market Sale3335644.55$ 1,486,009.80
Dec 24, 2025Thompson Peter A.Open Market Sale3335644.55$ 1,486,009.80
Dec 17, 2025ORBIMED ADVISORS LLCOpen Market Sale187544.49$ 83,427.75
Dec 17, 2025OrbiMed Capital GP VIII LLCOpen Market Sale187544.49$ 83,427.75
Dec 17, 2025Thompson Peter A.Open Market Sale187544.49$ 83,427.75
Dec 5, 2025Fitzpatrick JenniferOption Excercise102506.11$ 62,627.50
Dec 5, 2025Fitzpatrick JenniferOpen Market Sale1025040.52$ 415,330.00
Nov 20, 2025RA CAPITAL MANAGEMENT, LLCOpen Market Sale3031639.61$ 1,200,703.87
Nov 20, 2025RA Capital Healthcare Fund LPOpen Market Sale3031639.61$ 1,200,703.87
Nov 20, 2025RA Capital Nexus Fund, L.P.Open Market Sale3031639.61$ 1,200,703.87
Nov 20, 2025RA Capital Nexus Fund III, L.P.Open Market Sale3031639.61$ 1,200,703.87
Nov 20, 2025Kolchinsky PeterOpen Market Sale3031639.61$ 1,200,703.87
Nov 20, 2025Shah Rajeev M.Open Market Sale3031639.61$ 1,200,703.87
Nov 17, 2025RA CAPITAL MANAGEMENT, LLCOpen Market Sale13635140.34$ 5,500,158.01
Nov 17, 2025RA Capital Healthcare Fund LPOpen Market Sale13635140.34$ 5,500,158.01
Nov 17, 2025RA Capital Nexus Fund, L.P.Open Market Sale13635140.34$ 5,500,158.01
Nov 17, 2025RA Capital Nexus Fund III, L.P.Open Market Sale13635140.34$ 5,500,158.01
Nov 17, 2025Kolchinsky PeterOpen Market Sale13635140.34$ 5,500,158.01
Nov 17, 2025Shah Rajeev M.Open Market Sale13635140.34$ 5,500,158.01
Oct 24, 2025RA Capital Nexus Fund, L.P.Open Market Sale37361039.51$ 14,762,603.80
Oct 24, 2025RA Capital Nexus Fund III, L.P.Open Market Sale37361039.51$ 14,762,603.80
Oct 24, 2025Kolchinsky PeterOpen Market Sale37361039.51$ 14,762,603.80
Oct 24, 2025Shah Rajeev M.Open Market Sale37361039.51$ 14,762,603.80
Oct 24, 2025RA CAPITAL MANAGEMENT, LLCOpen Market Sale37361039.51$ 14,762,603.80
Oct 24, 2025RA Capital Healthcare Fund LPOpen Market Sale37361039.51$ 14,762,603.80
Oct 21, 2025Booth BruceOpen Market Sale8887834.22$ 3,041,683.18
Oct 21, 2025Cloonan MichaelOption Excercise998006.11$ 609,778.00
Oct 21, 2025Cloonan MichaelOpen Market Sale9980036.26$ 3,618,560.35
Oct 16, 2025Booth BruceOpen Market Sale28636932.30$ 9,251,102.06
Oct 15, 2025Cloonan MichaelOption Excercise252006.11$ 153,972.00
Oct 15, 2025Cloonan MichaelOpen Market Sale2520031.28$ 788,152.84
Oct 10, 2025Booth BruceOpen Market Sale19493230.47$ 5,939,783.84
Oct 3, 2025Booth BruceOpen Market Sale4954629.99$ 1,485,790.00
Sep 29, 2025Booth BruceOpen Market Sale7869330.08$ 2,367,472.73
Sep 26, 2025Cloonan MichaelOption Excercise250006.11$ 152,750.00
Sep 26, 2025Cloonan MichaelOpen Market Sale2500029.11$ 727,797.56
Sep 4, 2025Fitzpatrick JenniferOption Excercise102506.11$ 62,627.50
Sep 4, 2025Fitzpatrick JenniferOpen Market Sale1025023.12$ 236,980.00
Aug 29, 2025Ridloff ElenaOpen Market Sale958425.09$ 240,441.52
Aug 26, 2025Cloonan MichaelOption Excercise250006.11$ 152,750.00
Aug 26, 2025Cloonan MichaelOpen Market Sale2500024.97$ 624,360.90
Aug 26, 2025Ridloff ElenaOpen Market Sale2341625.70$ 601,857.86
Aug 20, 2025Cloonan MichaelOption Excercise250006.11$ 152,750.00
Aug 20, 2025Cloonan MichaelOpen Market Sale2500022.75$ 568,750.00
Aug 19, 2025Ridloff ElenaOpen Market Sale5200021.62$ 1,124,335.00
Jun 27, 2025TPG GP A, LLCOpen Market Purchase6000015.84$ 950,400.00
Jun 27, 2025COULTER JAMES GOpen Market Purchase6000015.84$ 950,400.00
Jun 27, 2025WINKELRIED JONOpen Market Purchase6000015.84$ 950,400.00