Eli Casdin insider trades: Biolife Solutions (BLFS) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Eli reports to the SEC
and 12 more companies
Open-market buys and sales
58 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 21, 2026 | BLFS | ↓ Sell | 1,200,000 | $23.44 | $28.1M | Indirect | May 21, 2026 (0d) |
| May 20, 2026 | WGS | ↑ Buy | 500,000 | $42.92 | $21.5M | Indirect | May 20, 2026 (0d) |
| Dec 4, 2025 | LAB | ↑ Buy | 350,000 | $1.44 | $503K | Indirect | Dec 4, 2025 (0d) |
| Nov 25, 2025 | LAB | ↑ Buy | 7,700,000 | $1.31 | $10.1M | Indirect | Nov 26, 2025 (1d) |
| Nov 20, 2025 | LAB | ↑ Buy | 1,075,000 | $1.28 | $1.4M | Indirect | Nov 20, 2025 (0d) |
| Nov 17, 2025 | LAB | ↑ Buy | 925,000 | $1.22 | $1.1M | Indirect | Nov 17, 2025 (0d) |
| Nov 12, 2025 | LAB | ↑ Buy | 1,175,000 | $1.17 | $1.4M | Indirect | Nov 12, 2025 (0d) |
| Oct 15, 2025 | BLFS | ↓ Sell | 750,000 | $28.55 | $21.4M | Footonote | Oct 17, 2025 (2d) |
| Sep 9, 2025 | LAB | ↑ Buy | 100,000 | $1.29 | $129K | Indirect | Sep 11, 2025 (2d) |
| Sep 4, 2025 | LAB | ↑ Buy | 500,000 | $1.27 | $636K | Indirect | Sep 5, 2025 (1d) |
| Aug 26, 2025 | LAB | ↑ Buy | 525,000 | $1.25 | $659K | Indirect | Aug 26, 2025 (0d) |
| Aug 22, 2025 | WGS | ↓ Sell | 500,000 | $120.90 | $60.5M | Indirect | Aug 22, 2025 (0d) |
| Aug 15, 2025 | BLFS | ↓ Sell | 500,000 | $24.40 | $12.2M | Indirect | Aug 21, 2025 (6d) |
| Aug 15, 2025 | LAB | ↑ Buy | 358,220 | $1.24 | $443K | Indirect | Aug 15, 2025 (0d) |
| Aug 11, 2025 | BLFS | ↓ Sell | 500,000 | $22.60 | $11.3M | Indirect | Aug 13, 2025 (2d) |
| Jun 10, 2025 | BLFS | ↓ Sell | 1,000,000 | $23.80 | $23.8M | Indirect | Jun 12, 2025 (2d) |
| Feb 28, 2025 | LAB | ↑ Buy | 4,820,959 | $1.06 | $5.1M | Indirect | Mar 4, 2025 (4d) |
| Aug 27, 2024 | LAB | ↑ Buy | 250,000 | $2.19 | $547K | Indirect | Aug 29, 2024 (2d) |
| Aug 26, 2024 | LAB | ↑ Buy | 750,000 | $2.06 | $1.5M | Indirect | Aug 26, 2024 (0d) |
| Aug 21, 2024 | LAB | ↑ Buy | 1,250,000 | $1.88 | $2.4M | Indirect | Aug 21, 2024 (0d) |
| Aug 14, 2024 | LAB | ↑ Buy | 1,200,000 | $1.59 | $1.9M | Indirect | Aug 16, 2024 (2d) |
| Aug 13, 2024 | LAB | ↑ Buy | 1,575,408 | $1.62 | $2.6M | Indirect | Aug 13, 2024 (0d) |
| Aug 8, 2024 | LAB | ↑ Buy | 1,069,562 | $1.61 | $1.7M | Indirect | Aug 9, 2024 (1d) |
| Aug 5, 2024 | LAB | ↑ Buy | 1,200,000 | $1.62 | $1.9M | Indirect | Aug 6, 2024 (1d) |
| Jun 4, 2024 | WGS | ↑ Buy | 130,000 | $21.21 | $2.8M | Direct | Jun 5, 2024 (1d) |
| May 29, 2024 | WGS | ↑ Buy | 40,000 | $21.07 | $843K | Direct | May 31, 2024 (2d) |
| May 28, 2024 | WGS | ↑ Buy | 170,000 | $20.15 | $3.4M | Direct | May 28, 2024 (0d) |
| May 23, 2024 | LAB | ↑ Buy | 100,000 | $2.60 | $260K | Indirect | May 28, 2024 (5d) |
| May 22, 2024 | LAB | ↑ Buy | 600,000 | $2.57 | $1.5M | Indirect | May 22, 2024 (0d) |
| May 17, 2024 | LAB | ↑ Buy | 1,352,072 | $2.56 | $3.5M | Indirect | May 17, 2024 (0d) |
| May 13, 2024 | WGS | ↑ Buy | 50,000 | $23.31 | $1.2M | Direct | May 15, 2024 (2d) |
| Mar 26, 2024 | TSVT | ↑ Buy | 40,000 | $5.10 | $204K | Indirect | Mar 28, 2024 (2d) |
| Mar 25, 2024 | TSVT | ↑ Buy | 777,377 | $5.02 | $3.9M | Indirect | Mar 25, 2024 (0d) |
| Mar 5, 2024 | LAB | ↑ Buy | 251,403 | $2.57 | $646K | Direct | Mar 6, 2024 (1d) |
| Mar 5, 2024 | WGS | ↑ Buy | 40,900 | $8.74 | $358K | Direct | Mar 6, 2024 (1d) |
| Oct 19, 2023 | BLFS | ↑ Buy | 927,165 | $11.19 | $10.4M | Direct | Oct 23, 2023 (4d) |
| Aug 9, 2023 | BLFS | ↑ Buy | 58,465 | $13.20 | $772K | Direct | Aug 11, 2023 (2d) |
| May 22, 2023 | BLFS | ↑ Buy | 74,973 | $22.32 | $1.7M | Indirect | May 23, 2023 (1d) |
| May 19, 2023 | LAB | ↑ Buy | 1,200,000 | $2.19 | $2.6M | Indirect | May 19, 2023 (0d) |
| May 18, 2023 | BLFS | ↑ Buy | 75,027 | $21.26 | $1.6M | Indirect | May 18, 2023 (0d) |
| Jan 31, 2023 | WGS | ↑ Buy | 71,428,542 | $0.35 | $25.0M | By Casdin Partners Master Fund, LP | Feb 2, 2023 (2d) |
| Jan 31, 2023 | WGS | ↑ Buy | 14,285,743 | $0.35 | $5.0M | By Casdin Partners FO1-MSV, LP | Feb 2, 2023 (2d) |
| Nov 17, 2022 | TNYA | ↑ Buy | 2,492,042 | $2.60 | $6.5M | Indirect | Nov 25, 2022 (8d) |
| Oct 3, 2022 | MXCT | ↓ Sell | 735,786 | $6.15 | $4.5M | Direct | Oct 5, 2022 (2d) |
| Jul 1, 2022 | MXCT | ↓ Sell | 3,235,548 | $4.30 | $13.9M | Direct | Jul 6, 2022 (5d) |
| Apr 29, 2022 | SMFR | ↑ Buy | 11,437,500 | $4.00 | $45.8M | By Casdin Partners Master Fund, LP | May 3, 2022 (4d) |
| Aug 3, 2021 | TNYA | ↑ Buy | 850,000 | $15.00 | $12.8M | Indirect | Aug 4, 2021 (1d) |
| Jul 30, 2021 | MXCT | ↑ Buy | 1,800,000 | $13.00 | $23.4M | Direct | Aug 3, 2021 (4d) |
| Jul 26, 2021 | ABSI | ↑ Buy | 1,562,500 | $16.00 | $25.0M | Indirect | Jul 28, 2021 (2d) |
| Jun 22, 2021 | IPSC | ↑ Buy | 750,000 | $20.00 | $15.0M | Indirect | Jun 22, 2021 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other BLFS insiders
Open-market trades in the last 12 months
About Eli Casdin's insider trades
Eli Casdin is a 10% owner of Biolife Solutions (BLFS). Since Jul 23, 2018, Eli has reported 50 open-market purchases worth $344.0M and 8 sales worth $175.7M on SEC Form 4. In the last 12 months: 6 buys ($35.9M) and 1 sale ($28.1M).
Their filings also include grants and awards (37 filings), other transactions (14 filings), option exercises (7 filings), conversions (7 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every BLFS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.