Ownership history in Siren, L.L.C. · 6 quarters on record
This page tracks every 13F SEC filing in which Siren, L.L.C. reported a position in Dyne Therapeutics Inc (DYN). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q4 | REDUCED | 3,502,941 | -1,226,233 | -25.9% | 2.04% | $68.5M | $19.56 |
| 2025 Q3 | REDUCED | 4,729,174 | -107,263 | -2.2% | 2.34% | $59.8M | $12.65 |
| 2025 Q2 | ADDED | 4,836,437 | +2,118,450 | +77.9% | 2.38% | $46.0M | $9.52 |
| 2025 Q1 | ADDED | 2,717,987 | +1,370,531 | +101.7% | 1.62% | $28.4M | $10.46 |
As of 2025 Q4 — sorted by position size