Castleark Management LLC
- SEC CIK
- 0001106832
- Latest filing
- Aug 14, 2026
RGEN holding history
Repligen Corp in every 13F filed by Castleark Management LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
RGEN overviewAll 13F holders of RGENFull Q2 2026 holdings
- Shares (Q1 2025)
- 0
- Sold out in Q1 2025
- Value
- $0
- % of portfolio
- 0.0%
- Quarters held
- 11
- Since Q1 2021
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q1 2025 | 0 | $0 | 0.0% | −14,900−100.0% | Sold out | Holders |
| Q4 2024 | 14,900 | $2.14M | 0.1% | −600−3.9% | Reduced | Holders |
| Q3 2024 | 15,500 | $2.31M | 0.1% | +15,500 | New | Holders |
| Q2 2024 | 0 | $0 | 0.0% | −3,120−100.0% | Sold out | Holders |
| Q1 2024 | 3,120 | $573.8K | <0.1% | +3,120 | New | Holders |
| Q4 2023 | 0 | $0 | 0.0% | −25,360−100.0% | Sold out | Holders |
| Q3 2023 | 25,360 | $4.03M | 0.2% | +25,360 | New | Holders |
| Q4 2022 | 0 | $0 | 0.0% | −2,530−100.0% | Sold out | Holders |
| Q3 2022 | 2,530 | $473.0K | <0.1% | +1,060+72.1% | Added | Holders |
| Q2 2022 | 1,470 | $239.0K | <0.1% | 00.0% | Unchanged | Holders |
| Q1 2022 | 1,470 | $276.0K | <0.1% | 00.0% | Unchanged | Holders |
| Q4 2021 | 1,470 | $389.0K | <0.1% | 00.0% | Unchanged | Holders |
| Q3 2021 | 1,470 | $425.0K | <0.1% | +720+96.0% | Added | Holders |
| Q2 2021 | 750 | $150.0K | <0.1% | 00.0% | Unchanged | Holders |
| Q1 2021 | 750 | $146.0K | <0.1% | – | – | Holders |
Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.