BioLife Solutions, Inc. (BLFS) has 20 known insider and institutional holders on record. The largest holder is Casdin Partners Master Fund, L.P. with 5,957,165 shares. Other notable holders include DE GREEF RODERICK and Mathew Aby J..
Over the last 12 months, insiders have made 104 transactions in BLFS stock — 12 buys (valued at RSU Award) and 82 sells (valued at $76.39M). Insider selling has exceeded buying during this period.
BLFS Insider Ownership
Top Holder
Casdin Partners Master Fund, L.P.
5,957,165 shares
Buys (12 mo)
12
$0.00 value
Sells (12 mo)
82
$76.39M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Casdin Partners Master Fund, L.p. |
10 Percent Owner |
5,957,165 |
2025-10-17 |
|
| 2 |
De Greef Roderick |
President and CEO |
733,746 |
2026-03-23 |
|
| 3 |
Mathew Aby J. |
EVP & Chief Scientific Officer |
390,682 |
2026-03-23 |
|
| 4 |
Rice Michael |
Officer |
347,085 |
2023-11-01 |
|
| 5 |
Wichterman Troy |
Chief Financial Officer |
216,900 |
2026-03-23 |
|
| 6 |
Berard Todd |
Chief Marketing Officer |
164,061 |
2026-03-23 |
|
| 7 |
Richardson Garrie |
Chief Revenue Officer |
114,773 |
2024-09-18 |
|
| 8 |
Foster Karen A. |
Chief Quality and Operations |
108,758 |
2026-03-31 |
|
| 9 |
Aebersold Sarah |
Chief Human Resources Officer |
92,429 |
2026-03-23 |
|
| 10 |
Phillips Geraint |
SVP, Global Operations |
69,802 |
2024-03-12 |
|
| 11 |
Ellingson Rachel |
Director |
57,995 |
2026-02-26 |
|
| 12 |
Goswami Joydeep |
Director |
53,156 |
2026-02-26 |
|
| 13 |
Werner Sean |
Chief Technology Officer |
48,251 |
2026-03-23 |
|
| 14 |
Moore Timothy L. |
Director |
44,943 |
2026-02-26 |
|
| 15 |
Schick Joseph C |
Director |
43,953 |
2024-03-12 |
|
| 16 |
Schulz Marcus |
Chief Revenue Officer |
42,097 |
2023-08-29 |
|
| 17 |
Cohen Raymond W |
Director |
27,763 |
2021-07-14 |
|
| 18 |
Duross Amy |
Director |
26,857 |
2026-02-26 |
|
| 19 |
Hinson Andrew G |
Director |
17,675 |
2021-08-18 |
|
| 20 |
Hunt Anthony |
Director |
15,046 |
2026-02-26 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-23 |
Foster Karen A. |
Chief Quality and Operations |
Informative Sell |
2,577 |
$19.17 |
$49.4K |
| 2026-03-19 |
Werner Sean |
Chief Technology Officer |
Tax Withholding of RSU |
1,681 |
$19.12 |
$32.14K |
| 2026-03-19 |
Wichterman Troy |
Chief Financial Officer |
Tax Withholding of RSU |
3,749 |
$19.12 |
$71.68K |
| 2026-03-19 |
Aebersold Sarah |
Chief Human Resources Officer |
Tax Withholding of RSU |
931 |
$19.12 |
$17.8K |
| 2026-03-19 |
Foster Karen A. |
Chief Quality and Operations |
Tax Withholding of RSU |
1,907 |
$19.12 |
$36.46K |
| 2026-03-19 |
Berard Todd |
Chief Marketing Officer |
Tax Withholding of RSU |
1,879 |
$19.12 |
$35.93K |
| 2026-03-19 |
Mathew Aby J. |
EVP & Chief Scientific Officer |
Tax Withholding of RSU |
2,255 |
$19.12 |
$43.12K |
| 2026-03-19 |
De Greef Roderick |
President and CEO |
Tax Withholding of RSU |
11,101 |
$19.12 |
$212.25K |
| 2026-03-09 |
Foster Karen A. |
Chief Quality and Operations |
Informative Sell |
500 |
$20.00 |
$10K |
| 2026-03-05 |
Foster Karen A. |
Chief Quality and Operations |
Informative Sell |
96,923 |
$20.15 |
$1.95M |
| 2026-03-03 |
Werner Sean |
Chief Technology Officer |
Informative Sell |
111 |
$20.74 |
$2.3K |
| 2026-03-03 |
Wichterman Troy |
Chief Financial Officer |
Informative Sell |
588 |
$20.74 |
$12.2K |
| 2026-03-03 |
Aebersold Sarah |
Chief Human Resources Officer |
Informative Sell |
219 |
$20.74 |
$4.54K |
| 2026-03-03 |
Foster Karen A. |
Chief Quality and Operations |
Informative Sell |
418 |
$20.74 |
$8.67K |
| 2026-03-03 |
Berard Todd |
Chief Marketing Officer |
Informative Sell |
353 |
$20.74 |
$7.32K |
| 2026-03-03 |
Mathew Aby J. |
EVP & Chief Scientific Officer |
Informative Sell |
529 |
$20.74 |
$10.97K |
| 2026-02-24 |
Werner Sean |
Chief Technology Officer |
RSU Award |
24,116 |
- |
- |
| 2026-02-24 |
Wichterman Troy |
Chief Financial Officer |
RSU Award |
31,150 |
- |
- |
| 2026-02-24 |
Duross Amy |
Director |
RSU Award |
8,170 |
- |
- |
| 2026-02-24 |
Aebersold Sarah |
Chief Human Resources Officer |
Tax Withholding of RSU |
5,734 |
$22.65 |
$129.88K |
| 2026-02-24 |
Coste Catherine |
Director |
RSU Award |
8,170 |
- |
- |
| 2026-02-24 |
Foster Karen A. |
Chief Quality and Operations |
Tax Withholding of RSU |
13,013 |
$22.65 |
$294.74K |
| 2026-02-24 |
Moore Timothy L. |
Director |
RSU Award |
8,170 |
- |
- |
| 2026-02-24 |
Berard Todd |
Chief Marketing Officer |
RSU Award |
20,096 |
- |
- |
| 2026-02-24 |
Hunt Anthony |
Director |
RSU Award |
8,170 |
- |
- |
