Sionna Therapeutics, Inc. (SION) — Insider Trading
Insider trading activity for Sionna Therapeutics, Inc. sourced from SEC EDGAR Form 4 filings.
Overview
- Total insider trades: 50
- Last trade date: Sep 21, 2026
- Ticker: SION
Top Insiders
- Booth Bruce — 1 trades, buy: $0, sell: $0
- Clancy Paul J — 1 trades, buy: $0, sell: $0
- Ridloff Elena (CFO and CBO) — 4 trades, buy: $0, sell: $0
- Ruddy Marcella K. — 1 trades, buy: $0, sell: $0
- Stelzer Laurie — 1 trades, buy: $0, sell: $0
Recent Trades
| Date | Insider | Ticker / Company |
Type | Shares | Value |
| Sep 17, 2026 |
RA CAPITAL MANAGEMENT, L.P. |
SION Sionna Therapeutics, Inc. |
SELL |
33,800 |
$252K |
| Sep 17, 2026 |
RA CAPITAL MANAGEMENT, L.P. |
SION Sionna Therapeutics, Inc. |
SELL |
3,415,011 |
$21.6M |
| Sep 17, 2026 |
Cloonan Michael |
SION Sionna Therapeutics, Inc. |
OTHER |
436,100 |
N/A |
| Sep 17, 2026 |
Cloonan Michael |
SION Sionna Therapeutics, Inc. |
OTHER |
436,100 |
N/A |
| Sep 17, 2026 |
Cloonan Michael |
SION Sionna Therapeutics, Inc. |
OTHER |
109,025 |
N/A |
| Sep 17, 2026 |
Cloonan Michael |
SION Sionna Therapeutics, Inc. |
OTHER |
109,025 |
N/A |
| Sep 17, 2026 |
Ridloff Elena |
SION Sionna Therapeutics, Inc. |
OTHER |
165,440 |
N/A |
| Sep 17, 2026 |
Ridloff Elena |
SION Sionna Therapeutics, Inc. |
OTHER |
165,440 |
N/A |
| Sep 17, 2026 |
Ridloff Elena |
SION Sionna Therapeutics, Inc. |
OTHER |
47,268 |
N/A |
| Sep 17, 2026 |
Ridloff Elena |
SION Sionna Therapeutics, Inc. |
OTHER |
47,269 |
N/A |
| Sep 17, 2026 |
McKee Charlotte |
SION Sionna Therapeutics, Inc. |
OTHER |
155,700 |
N/A |
| Sep 17, 2026 |
McKee Charlotte |
SION Sionna Therapeutics, Inc. |
OTHER |
155,700 |
N/A |
| Sep 17, 2026 |
McKee Charlotte |
SION Sionna Therapeutics, Inc. |
OTHER |
50,000 |
N/A |
| Sep 17, 2026 |
McKee Charlotte |
SION Sionna Therapeutics, Inc. |
OTHER |
50,000 |
N/A |
| Sep 17, 2026 |
Fitzpatrick Jennifer |
SION Sionna Therapeutics, Inc. |
OTHER |
103,140 |
N/A |
| Sep 17, 2026 |
Fitzpatrick Jennifer |
SION Sionna Therapeutics, Inc. |
OTHER |
103,140 |
N/A |
| Sep 17, 2026 |
Fitzpatrick Jennifer |
SION Sionna Therapeutics, Inc. |
OTHER |
28,132 |
N/A |
| Sep 17, 2026 |
Fitzpatrick Jennifer |
SION Sionna Therapeutics, Inc. |
OTHER |
28,133 |
N/A |
| Jul 6, 2026 |
Fitzpatrick Jennifer |
SION Sionna Therapeutics, Inc. |
OTHER |
10,250 |
N/A |
| Jul 6, 2026 |
Fitzpatrick Jennifer |
SION Sionna Therapeutics, Inc. |
SELL |
10,250 |
$447K |
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