Insider Trading activities at Sionna Therapeutics, Inc. (SION)

Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Sionna Therapeutics, Inc. (SION) since 2025 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Sionna Therapeutics, Inc.. Table 2 shows the detailed insider transactions. This company's CIK number is 2036042.

Total stock buying since 2025: $63,410,400.
Total stock sales since 2025: $6,492,001.
Total stock option exercises since 2025: $520,875.


9 insiders reported insider trading activities at Sionna Therapeutics, Inc. (SION):
Insider trading activities of Thompson Peter A.
Insider trading activities of Winkelried Jon
Insider trading activities of Orbimed Capital Gp Viii Llc
Insider trading activities of Ridloff Elena
Insider trading activities of Booth Bruce
Insider trading activities of Cloonan Michael
Insider trading activities of Atlas Venture Associates Opportunity Ii, Llc
Insider trading activities of Fitzpatrick Jennifer
Insider trading activities of Shah Rajeev M.

Table 1. Yearly summary of insider stock purchases, sales, and option exercises at Sionna Therapeutics, Inc. (SION).
Insider Buying Insider Sales Option Exercises
Year Shares Value Shares Value Shares Value
2025 3,530,000 $63,410,400 248,943 $6,492,001 85,250 $520,875

Table 2. Monthly summary of insider trading at Sionna Therapeutics, Inc. (SION).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2025-10 0 $0 200 $5,990 0 $0
2025-09 0 $0 122,579 $3,547,873 35,250 $215,376
2025-08 0 $0 126,164 $2,938,138 50,000 $305,499
2025-06 60,000 $950,400 0 $0 0 $0
2025-02 3,470,000 $62,460,000 0 $0 0 $0

Table 3. Detailed insider trading at Sionna Therapeutics, Inc. (SION)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2025-10-01 Booth Bruce Sale 200 29.95 5,990
2025-09-30 Booth Bruce Sale 12,388 30.06 372,383
2025-09-29 Cloonan Michael (President & CEO) Sale 7,793 29.70 231,452
2025-09-29 Cloonan Michael (President & CEO) Option Ex 7,793 6.11 47,615
2025-09-29 Booth Bruce Sale 66,105 30.09 1,989,099
2025-09-26 Cloonan Michael (President & CEO) Sale 17,207 28.85 496,353
2025-09-26 Cloonan Michael (President & CEO) Option Ex 17,207 6.11 105,134
2025-09-04 Fitzpatrick Jennifer (Chief Legal Officer) Sale 10,250 23.12 236,980
2025-09-04 Fitzpatrick Jennifer (Chief Legal Officer) Option Ex 10,250 6.11 62,627
2025-09-02 Ridloff Elena (CFO & Head of Corp. Dev.) Sale 8,836 25.08 221,606
2025-08-29 Ridloff Elena (CFO & Head of Corp. Dev.) Sale 748 25.18 18,834
2025-08-28 Ridloff Elena (CFO & Head of Corp. Dev.) Sale 16,098 25.97 418,065
2025-08-27 Ridloff Elena (CFO & Head of Corp. Dev.) Sale 3,618 25.10 90,811
2025-08-27 Cloonan Michael (President & CEO) Sale 7,426 25.01 185,716
2025-08-27 Cloonan Michael (President & CEO) Option Ex 7,426 6.11 45,372
2025-08-26 Ridloff Elena (CFO & Head of Corp. Dev.) Sale 3,700 25.13 92,981
2025-08-26 Cloonan Michael (President & CEO) Sale 17,574 24.96 438,647
2025-08-26 Cloonan Michael (President & CEO) Option Ex 17,574 6.11 107,377
2025-08-20 Ridloff Elena (CFO & Head of Corp. Dev.) Sale 17,500 22.69 397,075
2025-08-20 Cloonan Michael (President & CEO) Sale 25,000 22.75 568,750
2025-08-20 Cloonan Michael (President & CEO) Option Ex 25,000 6.11 152,750
2025-08-19 Ridloff Elena (CFO & Head of Corp. Dev.) Sale 34,500 21.08 727,259
2025-06-27 Winkelried Jon Buy 60,000 15.84 950,400
2025-02-10 Atlas Venture Associates Opportunity Ii, Llc Buy 60,000 18.00 1,080,000
2025-02-10 Orbimed Capital Gp Viii Llc Buy 550,000 18.00 9,900,000
2025-02-10 Shah Rajeev M. Buy 1,125,000 18.00 20,250,000
2025-02-10 Booth Bruce Buy 60,000 18.00 1,080,000
2025-02-10 Winkelried Jon Buy 1,125,000 18.00 20,250,000
2025-02-10 Thompson Peter A. Buy 550,000 18.00 9,900,000

Insider trading activities including stock purchases, stock sales, and option exercises of SION listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Sionna Therapeutics, Inc. (symbol SION, CIK number 2036042) see the Securities and Exchange Commission (SEC) website.



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