Casdin Partners Master Fund, L.P.
Director, 10% Owner · STANDARD BIOTOOLS INC.
Every open-market stock purchase Casdin Partners Master Fund, L.P. has reported to the SEC on Form 4 that met our signal bar, parsed straight from the filings. Insiders sell for many reasons, but they buy with their own money for one — this page tracks where those buys landed inside insider clusters and how the prices paid compare to where the stock trades now.
Where the buys stand today
- LAB−29.7% vs price paidSTANDARD BIOTOOLS INC.
7 purchases totalling $1.9M at an average of $1.23 per share; the stock last traded at $0.87. See all insider buying in LAB →
Avg price paid$1.23Latest price$0.87Market cap$338.4M
Cluster participation
Buys that landed within days of other insiders buying the same stock — the pattern this site exists to catch.
All reported buys
| Date | Ticker | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Nov 17, 2025 | LABcluster | 225,000 | $1.22 | $274.5K | SEC ↗ |
| Nov 14, 2025 | LABcluster | 250,000 | $1.24 | $310.0K | SEC ↗ |
| Nov 13, 2025 | LABcluster | 450,000 | $1.20 | $540.0K | SEC ↗ |
| Sep 9, 2025 | LABcluster | 100,000 | $1.29 | $129.0K | SEC ↗ |
| Aug 26, 2025 | LABcluster | 125,000 | $1.26 | $157.5K | SEC ↗ |
| Aug 25, 2025 | LABcluster | 200,000 | $1.24 | $248.0K | SEC ↗ |
| Aug 22, 2025 | LABcluster | 200,000 | $1.26 | $252.0K | SEC ↗ |
Get alerted the next time Casdin Partners Master Fund, L.P. — or any insider — buys
We watch every Form 4 as it hits SEC EDGAR and alert you when insiders cluster into the same stock.
About this data
Figures are parsed from Casdin Partners Master Fund, L.P.'s Form 4 filings on SEC EDGAR (CIK 1534265) and cover open-market purchases (transaction code P) — grants, option exercises, and sales are excluded, which is why totals here can differ from raw filing counts. Every row links to its source document.
This page is informational and reflects public filing data. It is not investment advice.