Ownership history in Prosight Management, LP · 21 quarters on record
This page tracks every 13F SEC filing in which Prosight Management, LP reported a position in PROTHENA CORP PLC (PRTA). 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 Q3 | REDUCED | 20,000 | -247,800 | -92.5% | 0.05% | $195K | $9.76 |
| 2025 Q2 | REDUCED | 267,800 | -140,322 | -34.4% | 0.40% | $1.6M | $6.07 |
| 2025 Q1 | REDUCED | 408,122 | -10,000 | -2.4% | 1.66% | $5.1M | $12.38 |
| 2024 Q4 | REDUCED | 418,122 | -65,345 | -13.5% | 1.60% | $5.8M | $13.85 |
| 2024 Q3 | ADDED | 483,467 | +196,541 | +68.5% | 1.99% | $8.1M | $16.73 |
| 2024 Q2 | ADDED | 286,926 | +116,457 | +68.3% | 1.77% | $5.9M | $20.64 |
| 2024 Q1 | REDUCED | 170,469 | -59,070 | -25.7% | 1.17% | $4.2M | $24.77 |
| 2023 Q4 | ADDED | 229,539 | +103,337 | +81.9% | 3.35% | $8.3M | $36.34 |
| 2023 Q3 | ADDED | 126,202 | +6,202 | +5.2% | 1.93% | $6.1M | $48.25 |
| 2023 Q2 | REDUCED | 120,000 | -327,092 | -73.2% | 2.51% | $8.2M | $68.28 |
As of 2025 Q4 — sorted by position size