Insider Transactions in Q4 2025 at Sionna Therapeutics, Inc. (SION)
Insider Transaction List (Q4 2025)
| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Dec 24
2025
|
Peter A. Thompson Director |
SELL
Open market or private sale
|
Indirect |
33,356
-0.93%
|
$1,467,664
$44.55 P/Share
|
|
Dec 24
2025
|
Orbimed Advisors LLC Director |
SELL
Open market or private sale
|
Indirect |
33,356
-0.93%
|
$1,467,664
$44.55 P/Share
|
|
Dec 19
2025
|
Peter A. Thompson Director |
SELL
Open market or private sale
|
Indirect |
875
-0.02%
|
$38,500
$44.49 P/Share
|
|
Dec 19
2025
|
Orbimed Advisors LLC Director |
SELL
Open market or private sale
|
Indirect |
875
-0.02%
|
$38,500
$44.49 P/Share
|
|
Dec 18
2025
|
Peter A. Thompson Director |
SELL
Open market or private sale
|
Indirect |
100
-0.0%
|
$4,400
$44.49 P/Share
|
|
Dec 18
2025
|
Orbimed Advisors LLC Director |
SELL
Open market or private sale
|
Indirect |
100
-0.0%
|
$4,400
$44.49 P/Share
|
|
Dec 17
2025
|
Peter A. Thompson Director |
SELL
Open market or private sale
|
Indirect |
900
-0.03%
|
$39,600
$44.5 P/Share
|
|
Dec 17
2025
|
Orbimed Advisors LLC Director |
SELL
Open market or private sale
|
Indirect |
900
-0.03%
|
$39,600
$44.5 P/Share
|
|
Dec 05
2025
|
Jennifer Fitzpatrick Chief Legal Officer |
SELL
Open market or private sale
|
Direct |
10,250
-100.0%
|
$410,000
$40.52 P/Share
|
|
Dec 05
2025
|
Jennifer Fitzpatrick Chief Legal Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
10,250
+50.0%
|
$61,500
$6.11 P/Share
|
|
Nov 26
2025
|
Orbimed Advisors LLC Director |
SELL
Open market or private sale
|
Indirect |
1,600
-0.04%
|
$70,400
$44.49 P/Share
|
|
Nov 26
2025
|
Peter A. Thompson Director |
SELL
Open market or private sale
|
Indirect |
1,600
-0.04%
|
$70,400
$44.49 P/Share
|
|
Nov 25
2025
|
Orbimed Advisors LLC Director |
SELL
Open market or private sale
|
Indirect |
11,890
-0.33%
|
$523,160
$44.6 P/Share
|
|
Nov 25
2025
|
Peter A. Thompson Director |
SELL
Open market or private sale
|
Indirect |
11,890
-0.33%
|
$523,160
$44.6 P/Share
|
|
Nov 24
2025
|
Orbimed Advisors LLC Director |
SELL
Open market or private sale
|
Indirect |
94,583
-2.55%
|
$4,161,652
$44.54 P/Share
|
|
Nov 24
2025
|
Peter A. Thompson Director |
SELL
Open market or private sale
|
Indirect |
94,583
-2.55%
|
$4,161,652
$44.54 P/Share
|
|
Nov 21
2025
|
Ra Capital Management, L.P. |
SELL
Open market or private sale
|
Indirect |
25,183
-1.59%
|
$982,137
$39.5 P/Share
|
|
Nov 20
2025
|
Ra Capital Management, L.P. |
SELL
Open market or private sale
|
Indirect |
5,133
-0.16%
|
$205,320
$40.2 P/Share
|
|
Nov 19
2025
|
Ra Capital Management, L.P. |
SELL
Open market or private sale
|
Indirect |
47,442
-1.4%
|
$1,897,680
$40.31 P/Share
|
|
Nov 18
2025
|
Ra Capital Management, L.P. |
SELL
Open market or private sale
|
Indirect |
6,922
-0.4%
|
$269,958
$39.57 P/Share
|
|
Nov 17
2025
|
Ra Capital Management, L.P. |
SELL
Open market or private sale
|
Indirect |
81,987
-1.48%
|
$3,361,467
$41.12 P/Share
|
|
Oct 28
2025
|
Ra Capital Management, L.P. |
SELL
Open market or private sale
|
Indirect |
62,610
-2.44%
|
$2,441,790
$39.58 P/Share
|
|
Oct 24
2025
|
Ra Capital Management, L.P. |
SELL
Open market or private sale
|
Indirect |
311,000
-12.52%
|
$12,129,000
$39.5 P/Share
|
|
Oct 21
2025
|
Michael Cloonan President & CEO |
SELL
Open market or private sale
|
Direct |
99,800
-4.34%
|
$3,493,000
$36.0 P/Share
|
|
Oct 21
2025
|
Michael Cloonan President & CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
99,800
+4.15%
|
$598,800
$6.11 P/Share
|
|
Oct 21
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
88,878
-0.53%
|
$3,021,852
$34.72 P/Share
|
|
Oct 20
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
55,985
-0.82%
|
$1,791,520
$32.06 P/Share
|
|
Oct 17
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
61,124
-0.59%
|
$1,955,968
$32.76 P/Share
|
|
Oct 16
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
169,260
-1.17%
|
$5,416,320
$32.02 P/Share
|
|
Oct 16
2025
|
Michael Cloonan President & CEO |
SELL
Open market or private sale
|
Direct |
10,425
-0.94%
|
$333,600
$32.73 P/Share
|
|
Oct 16
2025
|
Michael Cloonan President & CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
10,425
+0.92%
|
$62,550
$6.11 P/Share
|
|
Oct 15
2025
|
Michael Cloonan President & CEO |
SELL
Open market or private sale
|
Direct |
14,775
-2.63%
|
$458,025
$31.11 P/Share
|
|
Oct 15
2025
|
Michael Cloonan President & CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
14,775
+2.56%
|
$88,650
$6.11 P/Share
|
|
Oct 15
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
115,856
-1.54%
|
$3,475,680
$30.75 P/Share
|
|
Oct 14
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
606
-0.02%
|
$17,574
$29.95 P/Share
|
|
Oct 13
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
58,232
-0.76%
|
$1,746,960
$30.68 P/Share
|
|
Oct 10
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
20,238
-0.52%
|
$586,902
$29.98 P/Share
|
|
Oct 06
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
11,800
-0.3%
|
$342,200
$29.95 P/Share
|
|
Oct 03
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
37,746
-0.97%
|
$1,132,380
$30.0 P/Share
|
|
Oct 01
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
200
-0.01%
|
$5,800
$29.95 P/Share
|