Stocks · Health care · Pharmaceutical Preparations

Sionna Therapeutics, Inc.

SION Clue Score23
United States Fiscal year ends December CIK 0002036042
4.90
+0.00%
Close, 9 Oct 2026 · USD

Price, with every insider trade on it

Closing prices, 12 months · point at a dot for who traded, or at the line for the close
4.90 on 9 Oct 2026
51 28 5 Oct 2025 Apr 2026 Oct 2026 13 Oct 2025 $29.31 14 Oct 2025 $29.94 15 Oct 2025 $30.91 16 Oct 2025 $32.72 17 Oct 2025 $31.93 20 Oct 2025 $32.20 21 Oct 2025 $42.50 22 Oct 2025 $38.90 23 Oct 2025 $39.60 24 Oct 2025 $39.21 27 Oct 2025 $38.33 28 Oct 2025 $39.45 29 Oct 2025 $37.52 30 Oct 2025 $38.01 31 Oct 2025 $38.21 3 Nov 2025 $36.06 4 Nov 2025 $35.64 5 Nov 2025 $35.08 6 Nov 2025 $34.40 7 Nov 2025 $34.71 10 Nov 2025 $35.77 11 Nov 2025 $36.46 12 Nov 2025 $36.58 13 Nov 2025 $35.88 14 Nov 2025 $37.00 17 Nov 2025 $39.93 18 Nov 2025 $39.12 19 Nov 2025 $38.41 20 Nov 2025 $38.94 21 Nov 2025 $43.66 24 Nov 2025 $44.38 25 Nov 2025 $44.28 26 Nov 2025 $43.79 28 Nov 2025 $43.57 1 Dec 2025 $38.96 2 Dec 2025 $39.01 3 Dec 2025 $41.16 4 Dec 2025 $40.88 5 Dec 2025 $40.29 8 Dec 2025 $40.72 9 Dec 2025 $41.59 10 Dec 2025 $41.21 11 Dec 2025 $41.72 12 Dec 2025 $42.77 15 Dec 2025 $42.76 16 Dec 2025 $42.89 17 Dec 2025 $43.09 18 Dec 2025 $44.21 19 Dec 2025 $42.37 22 Dec 2025 $42.42 23 Dec 2025 $43.44 24 Dec 2025 $44.03 26 Dec 2025 $43.70 29 Dec 2025 $42.81 30 Dec 2025 $41.39 31 Dec 2025 $41.14 2 Jan 2026 $39.21 5 Jan 2026 $40.85 6 Jan 2026 $37.22 7 Jan 2026 $43.21 8 Jan 2026 $36.60 9 Jan 2026 $39.25 12 Jan 2026 $36.34 13 Jan 2026 $36.81 14 Jan 2026 $41.18 15 Jan 2026 $38.85 16 Jan 2026 $39.11 20 Jan 2026 $40.01 21 Jan 2026 $40.79 22 Jan 2026 $41.77 23 Jan 2026 $42.38 26 Jan 2026 $42.60 27 Jan 2026 $43.40 28 Jan 2026 $42.13 29 Jan 2026 $42.44 30 Jan 2026 $42.26 2 Feb 2026 $43.65 3 Feb 2026 $44.48 4 Feb 2026 $41.32 5 Feb 2026 $35.25 6 Feb 2026 $36.11 9 Feb 2026 $36.82 10 Feb 2026 $38.02 11 Feb 2026 $36.53 12 Feb 2026 $37.64 13 Feb 2026 $37.52 17 Feb 2026 $38.03 18 Feb 2026 $37.73 19 Feb 2026 $37.34 20 Feb 2026 $35.49 23 Feb 2026 $36.10 24 Feb 2026 $37.32 25 Feb 2026 $38.03 26 Feb 2026 $38.00 27 Feb 2026 $36.54 2 Mar 2026 $33.92 3 Mar 2026 $34.09 4 Mar 2026 $34.57 5 Mar 2026 $34.56 6 Mar 2026 $35.93 9 Mar 2026 $37.53 10 Mar 2026 $38.08 11 Mar 2026 $38.38 12 Mar 2026 $36.68 13 Mar 2026 $37.32 16 Mar 2026 $37.17 17 Mar 2026 $35.84 18 Mar 2026 $34.40 19 Mar 2026 $35.49 20 Mar 2026 $36.39 23 Mar 2026 $36.43 24 Mar 2026 $34.76 25 Mar 2026 $37.08 26 Mar 2026 $37.96 27 Mar 2026 $36.16 30 Mar 2026 $36.66 31 Mar 2026 $40.09 1 Apr 2026 $41.30 2 Apr 2026 $40.49 6 Apr 2026 $37.38 7 Apr 2026 $36.76 8 Apr 2026 $36.95 9 Apr 2026 $38.89 10 Apr 2026 $37.89 13 Apr 2026 $41.77 14 Apr 2026 $43.30 15 Apr 2026 $45.09 16 Apr 2026 $45.24 17 Apr 2026 $43.54 20 Apr 2026 $42.64 21 Apr 2026 $41.79 22 Apr 2026 $43.20 23 Apr 2026 $38.35 24 Apr 2026 $38.11 27 Apr 2026 $39.21 28 Apr 2026 $39.59 29 Apr 2026 $37.43 30 Apr 2026 $38.70 1 May 2026 $39.15 4 May 2026 $40.45 5 May 2026 $40.97 6 May 2026 $43.29 7 May 2026 $43.31 8 May 2026 $44.23 11 May 2026 $45.95 12 May 2026 $40.94 13 May 2026 $43.12 14 May 2026 $42.77 15 May 2026 $40.22 18 May 2026 $39.24 19 May 2026 $37.68 20 May 2026 $39.50 21 May 2026 $41.75 22 May 2026 $41.13 26 May 2026 $42.88 27 May 2026 $43.43 28 May 2026 $42.80 29 May 2026 $42.82 1 Jun 2026 $40.90 2 Jun 2026 $36.48 3 Jun 2026 $36.70 4 Jun 2026 $37.78 5 Jun 2026 $35.37 8 Jun 2026 $33.51 9 Jun 2026 $33.69 10 Jun 2026 $34.03 11 Jun 2026 $36.05 12 Jun 2026 $35.92 15 Jun 2026 $36.00 16 Jun 2026 $34.75 17 Jun 2026 $36.73 18 Jun 2026 $37.30 22 Jun 2026 $38.83 23 Jun 2026 $39.87 24 Jun 2026 $41.09 25 Jun 2026 $42.77 26 Jun 2026 $42.18 29 Jun 2026 $42.97 30 Jun 2026 $43.99 1 Jul 2026 $41.64 2 Jul 2026 $43.99 6 Jul 2026 $43.12 7 Jul 2026 $44.93 8 Jul 2026 $44.00 9 Jul 2026 $44.94 10 Jul 2026 $45.29 13 Jul 2026 $43.95 14 Jul 2026 $42.59 15 Jul 2026 $44.38 16 Jul 2026 $45.29 17 Jul 2026 $49.41 20 Jul 2026 $45.69 21 Jul 2026 $47.21 22 Jul 2026 $45.03 23 Jul 2026 $44.06 24 Jul 2026 $45.70 27 Jul 2026 $45.38 28 Jul 2026 $46.55 29 Jul 2026 $44.81 30 Jul 2026 $46.78 31 Jul 2026 $47.13 3 Aug 2026 $49.26 4 Aug 2026 $49.94 5 Aug 2026 $47.34 6 Aug 2026 $49.61 7 Aug 2026 $51.04 10 Aug 2026 $4.50 11 Aug 2026 $5.10 12 Aug 2026 $6.25 13 Aug 2026 $6.54 14 Aug 2026 $6.46 17 Aug 2026 $5.91 18 Aug 2026 $5.94 19 Aug 2026 $6.25 20 Aug 2026 $5.52 21 Aug 2026 $5.29 24 Aug 2026 $5.59 25 Aug 2026 $6.25 26 Aug 2026 $6.17 27 Aug 2026 $6.06 28 Aug 2026 $5.87 31 Aug 2026 $6.03 1 Sep 2026 $6.46 2 Sep 2026 $7.31 3 Sep 2026 $6.75 4 Sep 2026 $7.18 8 Sep 2026 $7.30 9 Sep 2026 $7.48 10 Sep 2026 $7.62 11 Sep 2026 $7.85 14 Sep 2026 $8.26 15 Sep 2026 $6.88 16 Sep 2026 $7.04 17 Sep 2026 $7.18 18 Sep 2026 $5.96 21 Sep 2026 $6.00 22 Sep 2026 $6.02 23 Sep 2026 $5.51 24 Sep 2026 $5.23 25 Sep 2026 $5.23 28 Sep 2026 $5.12 29 Sep 2026 $5.15 30 Sep 2026 $5.26 1 Oct 2026 $5.10 2 Oct 2026 $4.91 5 Oct 2026 $4.85 6 Oct 2026 $4.75 7 Oct 2026 $4.82 8 Oct 2026 $4.90 9 Oct 2026 $4.90 Booth Bruce Director Sold on a plan $1.77M 13 Oct 2025 · at $30.38 · 7.0% of stake Booth Bruce Director Sold on a plan $18.15K 14 Oct 2025 · at $29.95 · 0.1% of stake Cloonan Michael President & CEO Sold on a plan $459.66K 15 Oct 2025 · at $31.11 · 2.6% of stake Booth Bruce Director Sold on a plan $3.55M 15 Oct 2025 · at $30.61 · 13.4% of stake Cloonan Michael President & CEO Sold on a plan $328.49K 16 Oct 2025 · at $31.51 · 1.9% of stake Booth Bruce Director Sold on a plan $5.48M 16 Oct 2025 · at $32.35 · 19.0% of stake Booth Bruce Director Sold on a plan $1.98M 17 Oct 2025 · at $32.37 · 7.9% of stake Booth Bruce Director Sold on a plan $1.80M 20 Oct 2025 · at $32.09 · 7.4% of stake Booth Bruce Director Sold on a plan $3.04M 21 Oct 2025 · at $34.22 · 11.5% of stake Cloonan Michael President & CEO Sold on a plan $3.62M 21 Oct 2025 · at $36.26 · 15.4% of stake RA CAPITAL MANAGEMENT, L.P. Director Sold at will $12.28M 24 Oct 2025 · at $39.50 · 58.6% of stake RA CAPITAL MANAGEMENT, L.P. Director Sold at will $2.48M 28 Oct 2025 · at $39.58 · 23.0% of stake RA CAPITAL MANAGEMENT, L.P. Director Sold at will $3.33M 17 Nov 2025 · at $40.59 · 30.8% of stake RA CAPITAL MANAGEMENT, L.P. Director Sold at will $273.90K 18 Nov 2025 · at $39.57 · 3.7% of stake RA CAPITAL MANAGEMENT, L.P. Director Sold at will $1.90M 19 Nov 2025 · at $40.01 · 22.0% of stake RA CAPITAL MANAGEMENT, L.P. Director Sold at will $205.98K 20 Nov 2025 · at $40.13 · 3.0% of stake RA CAPITAL MANAGEMENT, L.P. Director Sold at will $994.73K 21 Nov 2025 · at $39.50 · 13.7% of stake ORBIMED ADVISORS LLC Director Sold on a plan $4.21M 24 Nov 2025 · at $44.54 · 2.6% of stake Thompson Peter A. Director Sold on a plan $4.21M 24 Nov 2025 · at $44.54 · 2.6% of stake ORBIMED ADVISORS LLC Director Sold on a plan $530.29K 25 Nov 2025 · at $44.60 · 0.3% of stake Thompson Peter A. Director Sold on a plan $530.29K 25 Nov 2025 · at $44.60 · 0.3% of stake ORBIMED ADVISORS LLC Director Sold on a plan $71.18K 26 Nov 2025 · at $44.49 · 0.0% of stake Thompson Peter A. Director Sold on a plan $71.18K 26 Nov 2025 · at $44.49 · 0.0% of stake Fitzpatrick Jennifer Chief Legal Officer Sold on a plan $415.33K 5 Dec 2025 · at $40.52 · 100% of stake ORBIMED ADVISORS LLC Director Sold on a plan $40.05K 17 Dec 2025 · at $44.50 · 0.0% of stake Thompson Peter A. Director Sold on a plan $40.05K 17 Dec 2025 · at $44.50 · 0.0% of stake ORBIMED ADVISORS LLC Director Sold on a plan $4.45K 18 Dec 2025 · at $44.49 · 0.0% of stake Thompson Peter A. Director Sold on a plan $4.45K 18 Dec 2025 · at $44.49 · 0.0% of stake ORBIMED ADVISORS LLC Director Sold on a plan $38.93K 19 Dec 2025 · at $44.49 · 0.0% of stake Thompson Peter A. Director Sold on a plan $38.93K 19 Dec 2025 · at $44.49 · 0.0% of stake ORBIMED ADVISORS LLC Director Sold on a plan $1.49M 24 Dec 2025 · at $44.55 · 0.9% of stake Thompson Peter A. Director Sold on a plan $1.49M 24 Dec 2025 · at $44.55 · 0.9% of stake TPG GP A, LLC 10% owner Sold at will $10.00M 22 Jan 2026 · at $40.00 · 3.7% of stake Thompson Peter A. Director Sold on a plan $84.24K 2 Feb 2026 · at $44.57 · 0.1% of stake ORBIMED ADVISORS LLC Director Sold on a plan $84.24K 2 Feb 2026 · at $44.57 · 0.1% of stake Thompson Peter A. Director Sold on a plan $1.30M 3 Feb 2026 · at $44.58 · 0.8% of stake ORBIMED ADVISORS LLC Director Sold on a plan $1.30M 3 Feb 2026 · at $44.58 · 0.8% of stake Fitzpatrick Jennifer Chief Legal Officer Sold on a plan $347.02K 5 Mar 2026 · at $33.86 · 100% of stake Thompson Peter A. Director Sold on a plan $2.13M 14 Apr 2026 · at $44.51 · 1.4% of stake ORBIMED ADVISORS LLC Director Sold on a plan $2.13M 14 Apr 2026 · at $44.51 · 1.4% of stake Thompson Peter A. Director Sold on a plan $10.53M 15 Apr 2026 · at $44.64 · 6.8% of stake ORBIMED ADVISORS LLC Director Sold on a plan $10.53M 15 Apr 2026 · at $44.64 · 6.8% of stake Thompson Peter A. Director Sold on a plan $10.29M 16 Apr 2026 · at $45.34 · 7.0% of stake ORBIMED ADVISORS LLC Director Sold on a plan $10.29M 16 Apr 2026 · at $45.34 · 7.0% of stake Thompson Peter A. Director Sold on a plan $2.34M 17 Apr 2026 · at $44.68 · 1.7% of stake ORBIMED ADVISORS LLC Director Sold on a plan $2.34M 17 Apr 2026 · at $44.68 · 1.7% of stake Thompson Peter A. Director Sold on a plan $131.24K 18 Apr 2026 · at $44.52 · 0.1% of stake ORBIMED ADVISORS LLC Director Sold on a plan $131.24K 18 Apr 2026 · at $44.52 · 0.1% of stake Thompson Peter A. Director Sold on a plan $2.17M 7 May 2026 · at $44.61 · 1.6% of stake ORBIMED ADVISORS LLC Director Sold on a plan $2.17M 7 May 2026 · at $44.61 · 1.6% of stake Thompson Peter A. Director Sold on a plan $2.66M 8 May 2026 · at $44.58 · 2.0% of stake ORBIMED ADVISORS LLC Director Sold on a plan $2.66M 8 May 2026 · at $44.58 · 2.0% of stake Thompson Peter A. Director Sold on a plan $8.53M 11 May 2026 · at $46.22 · 6.5% of stake ORBIMED ADVISORS LLC Director Sold on a plan $8.53M 11 May 2026 · at $46.22 · 6.5% of stake Thompson Peter A. Director Sold on a plan $4.49K 27 May 2026 · at $44.49 · 0.0% of stake ORBIMED ADVISORS LLC Director Sold on a plan $4.49K 27 May 2026 · at $44.49 · 0.0% of stake Thompson Peter A. Director Sold on a plan $5.27M 30 Jun 2026 · at $45.50 · 4.3% of stake ORBIMED ADVISORS LLC Director Sold on a plan $5.27M 30 Jun 2026 · at $45.50 · 4.3% of stake Fitzpatrick Jennifer Chief Legal Officer Sold on a plan $446.86K 6 Jul 2026 · at $43.60 · 100% of stake Thompson Peter A. Director Sold on a plan $3.85M 7 Jul 2026 · at $44.86 · 3.4% of stake ORBIMED ADVISORS LLC Director Sold on a plan $3.85M 7 Jul 2026 · at $44.86 · 3.4% of stake RA CAPITAL MANAGEMENT, L.P. Director Sold at will $21.84M 17 Sep 2026 · at $6.33 · 50.0% of stake
0 buys9 sales at will53 planned sales

Key numbers

Fiscal year 2025, ended 31 Dec 2025, as filed
Net income
$75.27M
Free cash flow
$66.67M
Return on equity
-24.5%
Return on capital
-22.9%

Revenue and net income

Fiscal years, as filed with the SEC · point at a year for the detail
0K -62M FY24 Fiscal year 2024 Revenue $0.00 Net income $61.69M Margin n/a 0K -75M FY25 Fiscal year 2025 Revenue $0.00 Net income $75.27M Margin n/a
RevenueNet incomeLoss

Latest insider transactions

From Form 4, most recent first
All of them →
DateInsiderTypeValueOf own stake
17 Sep 2026 RA CAPITAL MANAGEMENT, L.P.
Director
Sold at will $21.84M 50.0%
7 Jul 2026 ORBIMED ADVISORS LLC
Director
Sold on a plan $3.85M 3.4%
7 Jul 2026 Thompson Peter A.
Director
Sold on a plan $3.85M 3.4%
6 Jul 2026 Fitzpatrick Jennifer
Chief Legal Officer
Sold on a plan $446.86K 100%
30 Jun 2026 ORBIMED ADVISORS LLC
Director
Sold on a plan $5.27M 4.3%
30 Jun 2026 Thompson Peter A.
Director
Sold on a plan $5.27M 4.3%