sellModerate
Casdin Partners Master Fund, L.P. sold $28M of BLFS
owner at BIOLIFE SOLUTIONS INC. 1,200,000 shares at an average of $23.44, traded May 19, 2026, filed May 21, 2026.
Warning score
42Value
$28M
1,200,000 shares
Holdings after
4,757,165
-20% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet
Score components
- +12Role10% owner
- +25Trade size$28.1M at market
- +5Share of holdings soldSold 20% of holdings
- 0ClusterNo other insider selling within 14 days
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Rows in this filing
Every transaction in Form 4 0000919574-26-003646, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| May 19, 2026 | SOpen-market sale Common Stock, par value $0.001 per shareindirect: See footnote | -300,000 | $22.65 | $6.8M | 5,657,165 | May 21, 2026 |
| May 20, 2026 | SOpen-market sale Common Stock, par value $0.001 per shareindirect: See footnote | -250,000 | $23.70 | $5.9M | 5,407,165 | May 21, 2026 |
| May 21, 2026 | SOpen-market sale Common Stock, par value $0.001 per shareindirect: See footnote | -650,000 | $23.70 | $15M | 4,757,165 | May 21, 2026 |
Related signals
Other insiders at BIOLIFE SOLUTIONS INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 2Weak | BIOLIFE SOLUTIONS INC | Karen A. Foster Chief Quality and Operations | $49k 2,577 shares | -2% | |
| 65Notable | BIOLIFE SOLUTIONS INC | Karen A. Foster Chief Quality and Operations | $2.0M 97,423 shares | -46% | |
| 10Weak | BIOLIFE SOLUTIONS INC | Sarah Aebersold Chief Human Resources Officer | $4,542 219 shares | -0% | |
| 10Weak | BIOLIFE SOLUTIONS INC | Todd Berard Chief Marketing Officer | $7,321 353 shares | -0% | |
| 17Weak | BIOLIFE SOLUTIONS INC | Troy Wichterman Chief Financial Officer | $12k 588 shares | -0% | |
| 10Weak | BIOLIFE SOLUTIONS INC | Aby J. Mathew EVP & Chief Scientific Officer | $11k 529 shares | -0% | |
| 10Weak | BIOLIFE SOLUTIONS INC | Karen A. Foster Chief Quality and Operations | $8,669 418 shares | -0% | |
| 10Weak | BIOLIFE SOLUTIONS INC | Sean Werner Chief Technology Officer | $2,302 111 shares | -0% | |
| 10Weak | BIOLIFE SOLUTIONS INC | Sarah Aebersold Chief Human Resources Officer | $6,167 241 shares | -0% | |
| 10Weak | BIOLIFE SOLUTIONS INC | Todd Berard Chief Marketing Officer | $8,803 344 shares | -0% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.