Ownership history in MPM BioImpact LLC · 6 quarters on record
This page tracks every 13F SEC filing in which MPM BioImpact LLC reported a position in Xenon Pharmaceuticals Inc (XENE). 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 | 485,620 | -17,778 | -3.5% | 2.49% | $21.8M | $44.82 |
| 2025 Q3 | ADDED | 503,398 | +180,000 | +55.7% | 3.31% | $20.2M | $40.15 |
| 2025 Q2 | ADDED | 323,398 | +20,000 | +6.6% | 1.75% | $10.1M | $31.30 |
| 2025 Q1 | ADDED | 303,398 | +106,186 | +53.8% | 1.75% | $10.2M | $33.55 |
As of 2025 Q4 — sorted by position size