BLFS
insider transactionsBIOLIFE SOLUTIONS INC — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 365d
-1.3M
0 buy · 1.3M sell
Net value · 365d
-$30.2M
$0 in · $30.2M out
Sentiment · 365d
Net selling
0% buying · 100% selling
Open-market trades · 365d
17
0 buy · 1.3M sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Other·F
Troy Wichterman KEY
Chief Financial Officer
$26.8K
1.0K sh · $26.10
Own -0%
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Other·F
Chief Marketing Officer
$9.3K
356 sh · $26.10
Own -0%
-
Other·F
EVP & Chief Scientific Officer
$16.4K
627 sh · $26.10
Own -0%
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Sell·S
Casdin Partners Master Fund, L.P. / Casdin Capital, LLC / Casdin Partners GP, LLC / Eli Casdin
10% Owner
$15.4M
650.0K sh · $23.70
Own -12%
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Sell·S
Casdin Partners Master Fund, L.P. / Casdin Capital, LLC / Casdin Partners GP, LLC / Eli Casdin
10% Owner
$5.9M
250.0K sh · $23.70
Own -4%
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Sell·S
Casdin Partners Master Fund, L.P. / Casdin Capital, LLC / Casdin Partners GP, LLC / Eli Casdin
10% Owner
$6.8M
300.0K sh · $22.65
Own -5%
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Other·F
EVP & Chief Scientific Officer
$9.9K
515 sh · $19.27
Own -0%
-
Other·F
Chief Marketing Officer
$5.6K
293 sh · $19.27
Own -0%
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Other·F
Troy Wichterman KEY
Chief Financial Officer
$16.3K
844 sh · $19.27
Own -0%
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Sell·S
Chief Quality and Operations · 10b5-1
$49.4K
2.6K sh · $19.17
Own -2%
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Other·F
President and CEO
$212.3K
11.1K sh · $19.12
Own -1%
-
Other·F
Chief Marketing Officer
$35.9K
1.9K sh · $19.12
Own -1%
-
Other·F
Chief Technology Officer
$32.1K
1.7K sh · $19.12
Own -3%
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Other·F
Troy Wichterman KEY
Chief Financial Officer
$71.7K
3.7K sh · $19.12
Own -2%
-
Other·F
Chief Quality and Operations
$36.5K
1.9K sh · $19.12
Own -2%
-
Other·F
EVP & Chief Scientific Officer
$43.1K
2.3K sh · $19.12
Own -1%
-
Other·F
Chief Human Resources Officer
$17.8K
931 sh · $19.12
Own -1%
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Sell·S
Chief Quality and Operations
$10.0K
500 sh · $20.00
Own -0%
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Sell·S
Chief Quality and Operations
$2.0M
96.9K sh · $20.15
Own -46%
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Sell·S
Chief Technology Officer · 10b5-1
$2.3K
111 sh · $20.74
Own -0%
-
Sell·S
Chief Quality and Operations · 10b5-1
$8.7K
418 sh · $20.74
Own -0%
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Sell·S
EVP & Chief Scientific Officer · 10b5-1
$11.0K
529 sh · $20.74
Own -0%
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Sell·S
Troy Wichterman KEY
Chief Financial Officer · 10b5-1
$12.2K
588 sh · $20.74
Own -0%
-
Sell·S
Chief Marketing Officer · 10b5-1
$7.3K
353 sh · $20.74
Own -0%
-
Sell·S
Chief Human Resources Officer · 10b5-1
$4.5K
219 sh · $20.74
Own -0%
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Other·F
Chief Marketing Officer
$200.4K
8.8K sh · $22.65
Own -5%
-
Grant·A
Chief Marketing Officer
—
22.5K sh
Own +15%
-
Grant·A
Chief Marketing Officer
—
20.1K sh
Own +15%
-
Grant·A
Director
—
8.2K sh
Own +44%
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Other·F
Troy Wichterman KEY
Chief Financial Officer
$578.1K
25.5K sh · $22.65
Own -10%
-
Grant·A
Troy Wichterman KEY
Chief Financial Officer
—
64.9K sh
Own +36%
-
Grant·A
Troy Wichterman KEY
Chief Financial Officer
—
31.1K sh
Own +21%
-
Grant·A
Director
—
8.2K sh
Own +119%
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Grant·A
Director
—
8.2K sh
Own +143%
-
Grant·A
Director
—
8.2K sh
Own +16%
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Other·F
President and CEO
$2.0M
86.2K sh · $22.65
Own -10%
-
Grant·A
President and CEO
—
219.0K sh
Own +36%
-
Other·F
President and CEO
$1.5M
67.0K sh · $22.65
Own -10%
-
Grant·A
President and CEO
—
170.3K sh
Own +33%
-
Grant·A
President and CEO
—
118.7K sh
Own +30%
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Other·F
EVP & Chief Scientific Officer
$353.0K
15.6K sh · $22.65
Own -4%
-
Grant·A
EVP & Chief Scientific Officer
—
39.6K sh
Own +11%
-
Grant·A
EVP & Chief Scientific Officer
—
20.1K sh
Own +6%
-
Grant·A
Chief Technology Officer
—
24.1K sh
Own +93%
-
Grant·A
Director
—
8.2K sh
Own +22%
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Other·F
Chief Quality and Operations
$294.7K
13.0K sh · $22.65
Own -6%
-
Grant·A
Chief Quality and Operations
—
32.1K sh
Own +17%
-
Grant·A
Director
—
8.2K sh
Own +18%
-
Other·F
Chief Human Resources Officer
$129.9K
5.7K sh · $22.65
Own -6%
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Grant·A
Chief Human Resources Officer
—
23.5K sh
Own +31%
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Sell·S
Troy Wichterman KEY
Chief Financial Officer · 10b5-1
$25.3K
990 sh · $25.59
Own -1%
-
Sell·S
Chief Quality and Operations · 10b5-1
$8.6K
335 sh · $25.59
Own -0%
-
Sell·S
EVP & Chief Scientific Officer · 10b5-1
$10.4K
405 sh · $25.59
Own -0%
-
Sell·S
Chief Marketing Officer · 10b5-1
$8.8K
344 sh · $25.59
Own -0%
-
Sell·S
Chief Human Resources Officer · 10b5-1
$6.2K
241 sh · $25.59
Own -0%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 8, 2026 | Troy Wichterman KEY | Other F | 1.0K | $26.8K |
| Jun 8, 2026 | Todd Berard | Other F | 356 | $9.3K |
| Jun 8, 2026 | Aby J. Mathew | Other F | 627 | $16.4K |
| May 21, 2026 | Casdin Partners Master Fund, L.P. / Casdin Capital, LLC / Casdin Partners GP, LLC / Eli Casdin | Sell S | 650.0K | $15.4M |
| May 20, 2026 | Casdin Partners Master Fund, L.P. / Casdin Capital, LLC / Casdin Partners GP, LLC / Eli Casdin | Sell S | 250.0K | $5.9M |
| May 19, 2026 | Casdin Partners Master Fund, L.P. / Casdin Capital, LLC / Casdin Partners GP, LLC / Eli Casdin | Sell S | 300.0K | $6.8M |
| Apr 8, 2026 | Aby J. Mathew | Other F | 515 | $9.9K |
| Apr 8, 2026 | Todd Berard | Other F | 293 | $5.6K |
| Apr 8, 2026 | Troy Wichterman KEY | Other F | 844 | $16.3K |
| Mar 23, 2026 | Karen A. Foster 10b5-1 | Sell S | 2.6K | $49.4K |
| Mar 19, 2026 | Roderick De Greef KEY | Other F | 11.1K | $212.3K |
| Mar 19, 2026 | Todd Berard | Other F | 1.9K | $35.9K |
| Mar 19, 2026 | Sean Werner | Other F | 1.7K | $32.1K |
| Mar 19, 2026 | Troy Wichterman KEY | Other F | 3.7K | $71.7K |
| Mar 19, 2026 | Karen A. Foster | Other F | 1.9K | $36.5K |
| Mar 19, 2026 | Aby J. Mathew | Other F | 2.3K | $43.1K |
| Mar 19, 2026 | Sarah Aebersold | Other F | 931 | $17.8K |
| Mar 9, 2026 | Karen A. Foster | Sell S | 500 | $10.0K |
| Mar 5, 2026 | Karen A. Foster | Sell S | 96.9K | $2.0M |
| Mar 3, 2026 | Sean Werner 10b5-1 | Sell S | 111 | $2.3K |
| Mar 3, 2026 | Karen A. Foster 10b5-1 | Sell S | 418 | $8.7K |
| Mar 3, 2026 | Aby J. Mathew 10b5-1 | Sell S | 529 | $11.0K |
| Mar 3, 2026 | Troy Wichterman KEY 10b5-1 | Sell S | 588 | $12.2K |
| Mar 3, 2026 | Todd Berard 10b5-1 | Sell S | 353 | $7.3K |
| Mar 3, 2026 | Sarah Aebersold 10b5-1 | Sell S | 219 | $4.5K |
| Feb 24, 2026 | Todd Berard | Other F | 8.8K | $200.4K |
| Feb 24, 2026 | Todd Berard | Grant A | 22.5K | — |
| Feb 24, 2026 | Todd Berard | Grant A | 20.1K | — |
| Feb 24, 2026 | Amy Duross | Grant A | 8.2K | — |
| Feb 24, 2026 | Troy Wichterman KEY | Other F | 25.5K | $578.1K |
| Feb 24, 2026 | Troy Wichterman KEY | Grant A | 64.9K | — |
| Feb 24, 2026 | Troy Wichterman KEY | Grant A | 31.1K | — |
| Feb 24, 2026 | Anthony Hunt | Grant A | 8.2K | — |
| Feb 24, 2026 | Catherine Coste | Grant A | 8.2K | — |
| Feb 24, 2026 | Rachel Ellingson | Grant A | 8.2K | — |
| Feb 24, 2026 | Roderick De Greef KEY | Other F | 86.2K | $2.0M |
| Feb 24, 2026 | Roderick De Greef KEY | Grant A | 219.0K | — |
| Feb 24, 2026 | Roderick De Greef KEY | Other F | 67.0K | $1.5M |
| Feb 24, 2026 | Roderick De Greef KEY | Grant A | 170.3K | — |
| Feb 24, 2026 | Roderick De Greef KEY | Grant A | 118.7K | — |
| Feb 24, 2026 | Aby J. Mathew | Other F | 15.6K | $353.0K |
| Feb 24, 2026 | Aby J. Mathew | Grant A | 39.6K | — |
| Feb 24, 2026 | Aby J. Mathew | Grant A | 20.1K | — |
| Feb 24, 2026 | Sean Werner | Grant A | 24.1K | — |
| Feb 24, 2026 | Timothy L. Moore | Grant A | 8.2K | — |
| Feb 24, 2026 | Karen A. Foster | Other F | 13.0K | $294.7K |
| Feb 24, 2026 | Karen A. Foster | Grant A | 32.1K | — |
| Feb 24, 2026 | Joydeep Goswami | Grant A | 8.2K | — |
| Feb 24, 2026 | Sarah Aebersold | Other F | 5.7K | $129.9K |
| Feb 24, 2026 | Sarah Aebersold | Grant A | 23.5K | — |
| Jan 6, 2026 | Troy Wichterman KEY 10b5-1 | Sell S | 990 | $25.3K |
| Jan 6, 2026 | Karen A. Foster 10b5-1 | Sell S | 335 | $8.6K |
| Jan 6, 2026 | Aby J. Mathew 10b5-1 | Sell S | 405 | $10.4K |
| Jan 6, 2026 | Todd Berard 10b5-1 | Sell S | 344 | $8.8K |
| Jan 6, 2026 | Sarah Aebersold 10b5-1 | Sell S | 241 | $6.2K |
About BLFS insider trading
This page tracks insider transactions for BIOLIFE SOLUTIONS INC (BLFS) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.