Sionna Therapeutics, Inc.
SIONReported to SECin USCIK 0002036042Filings at SEC EDGAR
No score on this page, by design. Everything here is a fact from a public U.S. register: insider filings at the SEC (Form 4), lobbying filings under the Lobbying Disclosure Act, trades reported by members of Congress under the STOCK Act, and fund holdings in 13F filings. Our scores, percentiles and signals run on the Dutch register only, because that is the only register the model has been validated on.
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The most recent filings
Most recent filing first: every line of every Form 4 at this company that passed our review, the same lines as on the register. Reported is the day the filing reached the SEC, usually within two business days of the trade. Amounts are in U.S. dollars, as the form states them.
| Filed by | Type | Value | Reported | Filed by | Value | Type | Shares | Reported |
|---|---|---|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P.— | Open-market sell | $252,14833,800 shares | Sep 21, 2026 | RA CAPITAL MANAGEMENT, L.P. | $252,148 | Open-market sell | 33,800 | Sep 21, 2026 |
| RA CAPITAL MANAGEMENT, L.P.— | Open-market sell | $21,582,8703,415,011 shares | Sep 21, 2026 | RA CAPITAL MANAGEMENT, L.P. | $21,582,870 | Open-market sell | 3,415,011 | Sep 21, 2026 |
| Fitzpatrick JenniferCLO and Head of Program Mgmt. | Returned to the issuer | nothing paid103,140 shares | Sep 18, 2026 | Fitzpatrick JenniferCLO and Head of Program Mgmt. | nothing paid | Returned to the issuer | 103,140 | Sep 18, 2026 |
| Fitzpatrick JenniferCLO and Head of Program Mgmt. | Award | nothing paid103,140 shares | Sep 18, 2026 | Fitzpatrick JenniferCLO and Head of Program Mgmt. | nothing paid | Award | 103,140 | Sep 18, 2026 |
| Fitzpatrick JenniferCLO and Head of Program Mgmt. | Award | nothing paid28,132 shares | Sep 18, 2026 | Fitzpatrick JenniferCLO and Head of Program Mgmt. | nothing paid | Award | 28,132 | Sep 18, 2026 |