Profile
| Role | 10% Owner |
|---|---|
| Notability | 30/100 |
Updated Jul 16, 2026
Casdin Partners Master Fund, L.P. has filed 1 SEC Form 4 filing across 1 company in the last 90 days — active on both sides. Lifetime open-market purchases: $16.81M. Lifetime open-market sales: $94.45M. Historical track record: 5/5 stars across 27 tracked purchases.
| Role | 10% Owner |
|---|---|
| Notability | 30/100 |
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★★★★ (5/5) |
|---|---|
| Total purchases tracked | 27 |
| Purchases with forward-return data | 27 |
| 30-day win rate | 6667% |
| 90-day win rate | 3704% |
| Avg 5-day return | +334.90% |
| Avg 30-day return | +963.15% |
| Avg 90-day return | -645.45% |
| Best 30-day return | +3387.10% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-21 | BLFS | BIOLIFE SOLUTIONS INC | S — Open-market sale | 650.0K | $23.70 | $15.40M |
| 2026-05-21 | BLFS | BIOLIFE SOLUTIONS INC | S — Open-market sale | 250.0K | $23.70 | $5.92M |
| 2026-05-21 | BLFS | BIOLIFE SOLUTIONS INC | S — Open-market sale | 300.0K | $22.65 | $6.79M |
| 2025-12-05 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 150.0K | $1.45 | $217K |
| 2025-12-05 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 75.0K | $1.44 | $108K |
| 2025-12-05 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 125.0K | $1.42 | $178K |
| 2025-12-04 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 150.0K | $1.45 | $217K |
| 2025-12-04 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 75.0K | $1.44 | $108K |
| 2025-12-04 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 125.0K | $1.42 | $178K |
| 2025-11-26 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 7.55M | $1.30 | $9.84M |
| 2025-11-26 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 150.0K | $1.43 | $215K |
| 2025-11-21 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 450.0K | $1.30 | $586K |
| 2025-11-21 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 350.0K | $1.28 | $449K |
| 2025-11-21 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 275.0K | $1.23 | $339K |
| 2025-11-17 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 225.0K | $1.22 | $276K |
| 2025-11-17 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 250.0K | $1.24 | $310K |
| 2025-11-17 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 450.0K | $1.20 | $541K |
| 2025-11-13 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 375.0K | $1.19 | $446K |
| 2025-11-13 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 300.0K | $1.20 | $359K |
| 2025-11-13 | LAB | STANDARD BIOTOOLS INC. | P — Open-market purchase | 275.0K | $1.17 | $322K |
Casdin Partners Master Fund, L.P. is a corporate insider — currently tracked as 10% Owner of BIOLIFE SOLUTIONS INC (BLFS). InsiderAlpha tracks every SEC Form 4 filing in real time.
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 27 open-market purchases ($16.81M) and 7 open-market sales ($94.45M) across all tracked filings.
Across 27 tracked purchases, Casdin Partners Master Fund, L.P. averaged +963.1% avg 30-day return with a 6667% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live Casdin Partners Master Fund, L.P. profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.