Sionna Therapeutics, Inc. (SION) Institutional Ownership & Insider Trading
146 institutions reported holding Sionna Therapeutics, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 143 insider trades on Form 4 since 2025-10-01.
Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason
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- Market cap
- 162.8M
- P/E TTM
- —
- Dividend yield
- —
- 52-week
- —
- Next earnings
- 11 Nov, in 18 days
Institutions · all 13F filers
quarter to 30 Jun 2026 · filers in both quarters146 institutions held —% of the shares. Across filers that reported both quarters, shares held changed +5.6%.
Largest moves, shares (millions)
Institutional flow by quarter
net shares added or trimmed, millions · filers in both quarters| Quarter | Holders | Shares held, M | Change | Increased | New | Decreased | Closed |
|---|---|---|---|---|---|---|---|
| Jun 26 | 146 | 48 | +5.6% | 54 | 33 | 40 | 6 |
| Mar 26 | 122 | 46 | +5.2% | 39 | 28 | 27 | 9 |
| Dec 25 | 100 | 44 | -2.4% | 39 | 27 | 20 | 7 |
| Sep 25 | 77 | 45 | +3.2% | 20 | 18 | 18 | 5 |
| Jun 25 | 65 | 43 | +5.4% | 17 | 25 | 10 | 8 |
| Mar 25 | 47 | 41 | — | — | — | — | — |
Sionna Therapeutics, Inc. — questions
- Who owns Sionna Therapeutics, Inc. stock?
- 146 institutions reported Sionna Therapeutics, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: RA CAPITAL MANAGEMENT, L.P. (21.9%), TPG GP A, LLC (14.4%), VIKING GLOBAL INVESTORS LP (7.1%).
- Are Sionna Therapeutics, Inc. insiders buying or selling?
- 143 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.
Every figure on this page comes from Sionna Therapeutics, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.
How these figures are read: methodology · EquiReason.