17 insiders reported 439 Form 4 transactions for Sionna Therapeutics, Inc. (SION) over the past 18 months (most recent 2026-09-21). Recent activity: RA CAPITAL MANAGEMENT, L.P. (Director) Sell 3.4M shares, RA Capital Nexus Fund III, L.P. (Director) Sell 3.4M shares, Kolchinsky Peter (Director) Sell 3.4M shares, Shah Rajeev M. (Director) Sell 3.4M shares, RA Capital Nexus Fund, L.P. (Director) Sell 3.4M shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-21 | RA CAPITAL MANAGEMENT, L.P. | Director | Sell | 3.4M | $21.6M |
| 2026-09-21 | RA Capital Nexus Fund III, L.P. | Director | Sell | 3.4M | $21.6M |
| 2026-09-21 | Kolchinsky Peter | Director | Sell | 3.4M | $21.6M |
| 2026-09-21 | Shah Rajeev M. | Director | Sell | 3.4M | $21.6M |
| 2026-09-21 | RA Capital Nexus Fund, L.P. | Director | Sell | 3.4M | $21.6M |
| 2026-09-21 | RA Capital Healthcare Fund LP | Director | Sell | 3.4M | $21.6M |
| 2026-09-21 | RA Capital Healthcare Fund LP | Director | Sell | 33,800 | $252,148 |
| 2026-09-21 | RA CAPITAL MANAGEMENT, L.P. | Director | Sell | 33,800 | $252,148 |
| 2026-09-21 | Kolchinsky Peter | Director | Sell | 33,800 | $252,148 |
| 2026-09-21 | Shah Rajeev M. | Director | Sell | 33,800 | $252,148 |
| 2026-09-21 | RA Capital Nexus Fund, L.P. | Director | Sell | 33,800 | $252,148 |
| 2026-09-21 | RA Capital Nexus Fund III, L.P. | Director | Sell | 33,800 | $252,148 |
| 2026-09-18 | Ridloff Elena | CFO and CBO | Buy | 47,269 | $0 |
| 2026-09-18 | McKee Charlotte | CMO and Head of R&D | Buy | 50,000 | $0 |
| 2026-09-18 | Fitzpatrick Jennifer | CLO and Head of Program Mgmt. | Buy | 28,133 | $0 |
| 2026-09-18 | Cloonan Michael | President & CEO | Buy | 109,025 | $0 |
| 2026-09-18 | Ridloff Elena | CFO and CBO | Buy | 47,268 | $0 |
| 2026-09-18 | McKee Charlotte | CMO and Head of R&D | Buy | 50,000 | $0 |
| 2026-09-18 | Cloonan Michael | President & CEO | Buy | 109,025 | $0 |
| 2026-09-18 | Fitzpatrick Jennifer | CLO and Head of Program Mgmt. | Buy | 28,132 | $0 |
| 2026-07-09 | ORBIMED ADVISORS LLC | Director | Sell | 85,918 | $3.9M |
| 2026-07-09 | Thompson Peter A. | Director | Sell | 85,918 | $3.9M |
| 2026-07-09 | OrbiMed Capital GP VIII LLC | Director | Sell | 85,918 | $3.9M |
| 2026-07-07 | Fitzpatrick Jennifer | Chief Legal Officer | Sell | 10,250 | $446,862 |
| 2026-07-07 | Fitzpatrick Jennifer | Chief Legal Officer | Buy | 10,250 | $62,628 |
来源：SEC Form 4 申报文件 · 截至 2026-09-21