| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
10% Owner | Director, 10% Owner | Director
5 companies
Casdin Partners Master Fund, L.P. serves as a Director, 10% Owner at LAB and has filed Form 4s across 5 companies. Across recent SEC filings that breaks down to 69 buys and 9 sells. Those positions are worth an estimated $278.6M at current prices.
Historically, Casdin Partners Master Fund, L.P.'s trades have earned a middling insider score of 53/100 across 68 rated trades. Over a 12-month horizon, 29.3% of those trades were profitable, with an average 12-month return of -21.4%.
The biggest single holding is BLFS (~$112.7M) as 10% Owner. Net of sales, the recent Form 4 record there shows accumulation of 2,197,166 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| May 21, 2026 | BLFS Biolife Solutions, Inc. | 10% Owner | Sell | 1,200,000 | $23.44 | $28,125,000.00 | -20.1% | +47.4% | - | |
| Dec 4, 2025 | LAB Standard Biotools Inc. | Director, 10% Owner | Buy | 350,000 | $1.44 | $502,570.00 | +0.5% | -26.7% | - | |
| Nov 25, 2025 | LAB Standard Biotools Inc. | Director, 10% Owner | Buy | 7,700,000 | $1.31 | $10,053,280.00 | +12.0% | -21.8% | - | |
| Nov 20, 2025 | LAB Standard Biotools Inc. | Director, 10% Owner | Buy | 1,075,000 | $1.28 | $1,374,575.00 | +1.7% | -10.9% | - | |
| Nov 17, 2025 | LAB Standard Biotools Inc. | Director, 10% Owner | Buy | 925,000 | $1.22 | $1,126,775.00 | +1.5% | -7.4% | - | |
| Nov 12, 2025 | LAB Standard Biotools Inc. | Director, 10% Owner | Buy | 1,175,000 | $1.17 | $1,379,317.50 | +1.9% | +5.1% | - | |
| Oct 15, 2025 | BLFS Biolife Solutions Inc | 10% Owner | Sell | 750,000 | $28.55 | $21,410,325.00 | -11.2% | -16.9% | - | |
| Sep 9, 2025 | LAB Standard Biotools Inc. | Director, 10% Owner | Buy | 100,000 | $1.29 | $128,920.00 | +0.2% | +14.1% | -43.0% | |
| Sep 4, 2025 | LAB Standard Biotools Inc. | Director, 10% Owner | Buy | 500,000 | $1.27 | $635,750.00 | +0.8% | +11.6% | -46.5% | |
| Aug 26, 2025 | LAB Standard Biotools Inc. | Director, 10% Owner | Buy | 525,000 | $1.25 | $658,797.50 | +0.9% | +10.1% | -49.6% |