Latest Insider Transactions at Sionna Therapeutics, Inc. (SION)
This section provides a real-time view of insider transactions for Sionna Therapeutics, Inc. (SION). The data is sourced from Form 4 filings with the SEC, which are filed by insiders of Sionna Therapeutics, Inc. to disclose their transactions in the company's securities. By reviewing this information, investors can gain insights into the trading activity of Sionna Therapeutics, Inc.'s insiders and make more informed investment decisions.
Insider Transaction List
| 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
|
|
Sep 30
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
12,388
-0.32%
|
$371,640
$30.06 P/Share
|
|
Sep 29
2025
|
Bruce Booth |
SELL
Open market or private sale
|
Indirect |
66,105
-1.66%
|
$1,983,150
$30.09 P/Share
|
|
Sep 29
2025
|
Michael Cloonan President & CEO |
SELL
Open market or private sale
|
Direct |
7,793
-1.4%
|
$225,997
$29.7 P/Share
|
|
Sep 29
2025
|
Michael Cloonan President & CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
7,793
+1.38%
|
$46,758
$6.11 P/Share
|
|
Sep 26
2025
|
Michael Cloonan President & CEO |
SELL
Open market or private sale
|
Direct |
17,207
-3.05%
|
$481,796
$28.85 P/Share
|
|
Sep 26
2025
|
Michael Cloonan President & CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
17,207
+2.96%
|
$103,242
$6.11 P/Share
|
|
Sep 04
2025
|
Jennifer Fitzpatrick Chief Legal Officer |
SELL
Open market or private sale
|
Direct |
10,250
-100.0%
|
$235,750
$23.12 P/Share
|
|
Sep 04
2025
|
Jennifer Fitzpatrick Chief Legal Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
10,250
+50.0%
|
$61,500
$6.11 P/Share
|
|
Sep 02
2025
|
Elena Ridloff CFO & Head of Corp. Dev. |
SELL
Open market or private sale
|
Direct |
8,836
-18.65%
|
$220,900
$25.08 P/Share
|
|
Aug 29
2025
|
Elena Ridloff CFO & Head of Corp. Dev. |
SELL
Open market or private sale
|
Direct |
748
-1.55%
|
$18,700
$25.18 P/Share
|