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 |
|---|---|---|---|---|---|
|
Aug 28
2025
|
Elena Ridloff CFO & Head of Corp. Dev. |
SELL
Open market or private sale
|
Direct |
16,098
-25.07%
|
$402,450
$25.97 P/Share
|
|
Aug 27
2025
|
Elena Ridloff CFO & Head of Corp. Dev. |
SELL
Open market or private sale
|
Direct |
3,618
-5.33%
|
$90,450
$25.1 P/Share
|
|
Aug 27
2025
|
Michael Cloonan President & CEO |
SELL
Open market or private sale
|
Direct |
7,426
-1.34%
|
$185,650
$25.01 P/Share
|
|
Aug 27
2025
|
Michael Cloonan President & CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
7,426
+1.32%
|
$44,556
$6.11 P/Share
|
|
Aug 26
2025
|
Elena Ridloff CFO & Head of Corp. Dev. |
SELL
Open market or private sale
|
Direct |
3,700
-5.17%
|
$92,500
$25.13 P/Share
|
|
Aug 26
2025
|
Michael Cloonan President & CEO |
SELL
Open market or private sale
|
Direct |
17,574
-3.11%
|
$421,776
$24.96 P/Share
|
|
Aug 26
2025
|
Michael Cloonan President & CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
17,574
+3.02%
|
$105,444
$6.11 P/Share
|
|
Aug 20
2025
|
Elena Ridloff CFO & Head of Corp. Dev. |
SELL
Open market or private sale
|
Direct |
17,500
-19.66%
|
$385,000
$22.69 P/Share
|
|
Aug 20
2025
|
Michael Cloonan President & CEO |
SELL
Open market or private sale
|
Direct |
25,000
-4.37%
|
$550,000
$22.75 P/Share
|
|
Aug 20
2025
|
Michael Cloonan President & CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
25,000
+4.19%
|
$150,000
$6.11 P/Share
|
|
Aug 19
2025
|
Elena Ridloff CFO & Head of Corp. Dev. |
SELL
Open market or private sale
|
Direct |
34,500
-27.93%
|
$724,500
$21.08 P/Share
|
|
Jun 27
2025
|
Tpg Gp A, LLC > 10% Shareholder |
BUY
Open market or private purchase
|
Indirect |
60,000
+0.88%
|
$900,000
$15.84 P/Share
|
|
Feb 10
2025
|
Tpg Gp A, LLC > 10% Shareholder |
BUY
Open market or private purchase
|
Indirect |
1,125,000
+14.4%
|
$20,250,000
$18.0 P/Share
|
|
Feb 10
2025
|
Tpg Gp A, LLC > 10% Shareholder |
BUY
Conversion of derivative security
|
Indirect |
4,875,547
+46.72%
|
-
|
|
Feb 10
2025
|
Ra Capital Management, L.P. |
BUY
Open market or private purchase
|
Indirect |
1,125,000
+8.54%
|
$20,250,000
$18.0 P/Share
|
|
Feb 10
2025
|
Ra Capital Management, L.P. |
BUY
Conversion of derivative security
|
Indirect |
7,951,493
+42.29%
|
-
|
|
Feb 10
2025
|
Orbimed Advisors LLC Director |
BUY
Open market or private purchase
|
Indirect |
550,000
+12.93%
|
$9,900,000
$18.0 P/Share
|
|
Feb 10
2025
|
Orbimed Advisors LLC Director |
BUY
Conversion of derivative security
|
Indirect |
3,154,959
+50.0%
|
-
|
|
Feb 10
2025
|
Atlas Venture Fund Xi, L.P. |
BUY
Open market or private purchase
|
Indirect |
60,000
+6.91%
|
$1,080,000
$18.0 P/Share
|
|
Feb 10
2025
|
Atlas Venture Fund Xi, L.P. |
BUY
Conversion of derivative security
|
Indirect |
747,727
+50.0%
|
-
|
|
Feb 10
2025
|
Atlas Venture Fund Xi, L.P. |
BUY
Conversion of derivative security
|
Direct |
2,886,293
+50.0%
|
-
|
|
Feb 10
2025
|
Bruce Booth |
BUY
Open market or private purchase
|
Indirect |
60,000
+6.91%
|
$1,080,000
$18.0 P/Share
|
|
Feb 10
2025
|
Bruce Booth |
BUY
Conversion of derivative security
|
Indirect |
3,634,020
+50.0%
|
-
|
|
Feb 10
2025
|
Peter A. Thompson Director |
BUY
Open market or private purchase
|
Indirect |
550,000
+12.93%
|
$9,900,000
$18.0 P/Share
|
|
Feb 10
2025
|
Peter A. Thompson Director |
BUY
Conversion of derivative security
|
Indirect |
3,154,959
+50.0%
|
-
|