Ownership history in Birchview Capital, LP · 9 quarters on record
This page tracks every 13F SEC filing in which Birchview Capital, LP reported a position in CASTLE BIOSCIENCES INC (CSTL). 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 | 80,600 | -30,000 | -27.1% | 1.84% | $3.1M | $38.90 |
| 2025 Q3 | UNCHANGED | 110,600 | — | 0% | 1.90% | $2.5M | $22.77 |
| 2025 Q2 | ADDED | 110,600 | +22,196 | +25.1% | 2.24% | $2.3M | $20.42 |
| 2025 Q1 | ADDED | 88,404 | +10,404 | +13.3% | 1.54% | $1.8M | $20.02 |
| 2024 Q4 | ADDED | 78,000 | +20,000 | +34.5% | 1.69% | $2.1M | $26.65 |
| 2024 Q3 | ADDED | 58,000 | +24,000 | +70.6% | 1.44% | $1.7M | $28.52 |
| 2024 Q2 | ADDED | 34,000 | +20,000 | +142.9% | 0.69% | $740K | $21.77 |
| 2024 Q1 | ADDED | 14,000 | +4,000 | +40.0% | 0.25% | $310K | $22.15 |
| 2023 Q4 | INITIATED | 10,000 | — | — | 0.17% | $216K | — |
As of 2025 Q4 — sorted by position size