There have been 45 recent insider transactions recorded for Sionna Therapeutics, Inc. (SION), including 14 buys and 31 sells. Total insider buying was valued at $42.25M and total insider selling at $32.03M.
Notable insiders with recent activity include Fitzpatrick Jennifer, Orbimed Advisors Llc, Thompson Peter A.. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — SION
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-05 |
Fitzpatrick Jennifer |
Chief Legal Officer |
Informative Sell |
10,250 |
$33.86 |
$347.02K |
- |
| 2026-02-03 |
Orbimed Advisors Llc |
Director |
Informative Sell |
29,063 |
$44.58 |
$1.3M |
3,530,702 |
| 2026-02-03 |
Thompson Peter A. |
Director |
Informative Sell |
29,063 |
$44.58 |
$1.3M |
3,530,702 |
| 2026-02-02 |
Orbimed Advisors Llc |
Director |
Informative Sell |
1,890 |
$44.57 |
$84.24K |
3,559,765 |
| 2026-02-02 |
Thompson Peter A. |
Director |
Informative Sell |
1,890 |
$44.57 |
$84.24K |
3,559,765 |
| 2026-01-22 |
Tpg Gp A, Llc |
10 Percent Owner |
Informative Sell |
250,000 |
$40.00 |
$10M |
6,494,962 |
| 2026-01-02 |
Cloonan Michael |
President & CEO |
RSU Award |
436,100 |
$39.21 |
$17.1M |
436,100 |
| 2026-01-02 |
Ridloff Elena |
CFO |
RSU Award |
165,440 |
$39.21 |
$6.49M |
165,440 |
| 2026-01-02 |
Mckee Charlotte |
Chief Medical Officer |
RSU Award |
155,700 |
$39.21 |
$6.1M |
155,700 |
| 2026-01-02 |
Fitzpatrick Jennifer |
Chief Legal Officer |
RSU Award |
103,140 |
$39.21 |
$4.04M |
103,140 |
| 2026-01-02 |
Beer Caroline Stark |
Chief Business Officer |
RSU Award |
139,340 |
$39.21 |
$5.46M |
139,340 |
| 2025-12-24 |
Orbimed Advisors Llc |
Director |
Informative Sell |
33,356 |
$44.55 |
$1.49M |
3,561,655 |
| 2025-12-24 |
Thompson Peter A. |
Director |
Informative Sell |
33,356 |
$44.55 |
$1.49M |
3,561,655 |
| 2025-12-19 |
Orbimed Advisors Llc |
Director |
Informative Sell |
875 |
$44.49 |
$38.93K |
3,595,011 |
| 2025-12-19 |
Thompson Peter A. |
Director |
Informative Sell |
875 |
$44.49 |
$38.93K |
3,595,011 |
| 2025-12-18 |
Orbimed Advisors Llc |
Director |
Informative Sell |
100 |
$44.49 |
$4.45K |
3,595,886 |
| 2025-12-18 |
Thompson Peter A. |
Director |
Informative Sell |
100 |
$44.49 |
$4.45K |
3,595,886 |
| 2025-12-17 |
Orbimed Advisors Llc |
Director |
Informative Sell |
900 |
$44.50 |
$40.05K |
3,595,986 |
| 2025-12-17 |
Thompson Peter A. |
Director |
Informative Sell |
900 |
$44.50 |
$40.05K |
3,595,986 |
| 2025-12-05 |
Fitzpatrick Jennifer |
Chief Legal Officer |
Informative Sell |
10,250 |
$40.52 |
$415.33K |
- |
| 2025-11-26 |
Orbimed Advisors Llc |
Director |
Informative Sell |
1,600 |
$44.49 |
$71.18K |
3,596,886 |
| 2025-11-26 |
Thompson Peter A. |
Director |
Informative Sell |
1,600 |
$44.49 |
$71.18K |
3,596,886 |
| 2025-11-25 |
Orbimed Advisors Llc |
Director |
Informative Sell |
11,890 |
$44.60 |
$530.29K |
3,598,486 |
| 2025-11-25 |
Thompson Peter A. |
Director |
Informative Sell |
11,890 |
$44.60 |
$530.29K |
3,598,486 |
| 2025-11-24 |
Orbimed Advisors Llc |
Director |
Informative Sell |
94,583 |
$44.54 |
$4.21M |
3,610,376 |
| 2025-11-24 |
Thompson Peter A. |
Director |
Informative Sell |
94,583 |
$44.54 |
$4.21M |
3,610,376 |
| 2025-11-21 |
Ra Capital Management, L.p. |
10 Percent Owner |
Informative Sell |
7,609 |
$39.50 |
$300.56K |
159,033 |
| 2025-11-20 |
Ra Capital Management, L.p. |
10 Percent Owner |
Informative Sell |
604 |
$40.50 |
$24.46K |
166,642 |
| 2025-11-19 |
Ra Capital Management, L.p. |
10 Percent Owner |
Informative Sell |
9 |
$40.61 |
$365.49 |
168,193 |
| 2025-11-18 |
Ra Capital Management, L.p. |
10 Percent Owner |
Informative Sell |
2,092 |
$39.57 |
$82.78K |
182,527 |
| 2025-11-17 |
Ra Capital Management, L.p. |
10 Percent Owner |
Informative Sell |
331 |
$42.10 |
$13.94K |
184,619 |
| 2025-10-28 |
Ra Capital Management, L.p. |
10 Percent Owner |
Informative Sell |
10,476 |
$39.58 |
$414.64K |
209,391 |
| 2025-10-24 |
Ra Capital Management, L.p. |
10 Percent Owner |
Informative Sell |
107,941 |
$39.50 |
$4.26M |
219,867 |
| 2025-10-21 |
Booth Bruce |
Director |
Informative Sell |
17 |
$36.42 |
$619.14 |
686,567 |
| 2025-10-21 |
Cloonan Michael |
President & CEO |
Option Exercise (Sell) |
33,532 |
$6.11 |
$204.88K |
53,142 |
| 2025-10-16 |
Booth Bruce |
Director |
Informative Sell |
12,888 |
$33.38 |
$430.2K |
2,479,288 |
| 2025-06-12 |
Ra Capital Management, L.p. |
10 Percent Owner |
RSU Award |
19,959 |
$16.99 |
$339.1K |
19,959 |
| 2025-06-12 |
Thompson Peter A. |
Director |
RSU Award |
19,959 |
$16.99 |
$339.1K |
19,959 |
| 2025-06-12 |
Clancy Paul J |
Director |
RSU Award |
19,959 |
$16.99 |
$339.1K |
19,959 |
| 2025-06-12 |
Booth Bruce |
Director |
RSU Award |
19,959 |
$16.99 |
$339.1K |
19,959 |
| 2025-06-12 |
Stelzer Laurie |
Director |
RSU Award |
19,959 |
$16.99 |
$339.1K |
19,959 |
| 2025-06-12 |
Resnick Joshua |
Director |
RSU Award |
19,959 |
$16.99 |
$339.1K |
19,959 |
| 2025-06-12 |
Viney Joanne L. |
Director |
RSU Award |
19,959 |
$16.99 |
$339.1K |
19,959 |
| 2025-06-12 |
Fleming Harold Edward |
Director |
RSU Award |
19,959 |
$16.99 |
$339.1K |
19,959 |
| 2025-06-12 |
Ruddy Marcella K. |
Director |
RSU Award |
19,959 |
$16.99 |
$339.1K |
19,959 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
