Biolife Solutions Inc. Insider Trading

BLFS

Last 12 months

Insiders sold $5.92M and bought nothing on the open market.

5% of the selling was scheduled in advance under 10b5-1 plans. President and CEO Roderick De Greef sold $2.58M on Nov 13, 2025, 20% of their stake, outside a plan. The last open-market buy by an executive or director was in Aug 2014.

Net open-market

−$5.92M

0 buys · 29 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 8

executives and directors

Last open-market buy

Aug 2014

Aug 8, 2014

Get an email when BLFS's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
May 19 – 21	Casdin Partners Master Fund, L.p. Large holder	SoldNo plan 3 parts	1,200,000	$23.44 average	$28.1M	20%	Form 4
Mar 23	Karen A. Foster Chief Quality and Operations	Sold10b5-1 plan	2,577	$19.17	49K	2.3%	Form 4
Mar 5 – 9	Karen A. Foster Chief Quality and Operations	SoldNo plan 2 parts	97,423	$20.15 average	$1.96M	46%	Form 4
Mar 3	Sean Werner Chief Technology Officer	Sold10b5-1 plan	111	$20.74	2K	0.2%	Form 4
Mar 3	Karen A. Foster Chief Quality and Operations	Sold10b5-1 plan	418	$20.74	9K	0.2%	Form 4
Mar 3	Aby J. Mathew EVP & Chief Scientific Officer	Sold10b5-1 plan	529	$20.74	11K	0.1%	Form 4
Mar 3	Troy Wichterman Chief Financial Officer	Sold10b5-1 plan	588	$20.74	12K	0.3%	Form 4
Mar 3	Sarah Aebersold Chief Human Resources Officer	Sold10b5-1 plan	219	$20.74	5K	0.2%	Form 4
Mar 3	Todd Berard Chief Marketing Officer	Sold10b5-1 plan	353	$20.74	7K	0.2%	Form 4
Jan 6	Troy Wichterman Chief Financial Officer	Sold10b5-1 plan	990	$25.59	25K	0.7%	Form 4
Jan 6	Karen A. Foster Chief Quality and Operations	Sold10b5-1 plan	335	$25.59	9K	0.2%	Form 4
Jan 6	Sarah Aebersold Chief Human Resources Officer	Sold10b5-1 plan	241	$25.59	6K	0.3%	Form 4
Jan 6	Aby J. Mathew EVP & Chief Scientific Officer	Sold10b5-1 plan	405	$25.59	10K	0.1%	Form 4
Jan 6	Todd Berard Chief Marketing Officer	Sold10b5-1 plan	344	$25.59	9K	0.3%	Form 4
Dec 9, 2025 – Dec 15, 2025	Sarah Aebersold Chief Human Resources Officer	Sold10b5-1 plan 2 parts	946	$24.63 average	23K	1.2%	Form 4
Dec 15, 2025	Amy Duross Director	SoldNo plan	2,000	$24.60	49K	9.7%	Form 4
Dec 9, 2025	Aby J. Mathew EVP & Chief Scientific Officer	Sold10b5-1 plan	631	$25.13	16K	0.2%	Form 4
Dec 9, 2025	Troy Wichterman Chief Financial Officer	Sold10b5-1 plan	1,033	$25.13	26K	0.7%	Form 4
Dec 9, 2025	Todd Berard Chief Marketing Officer	Sold10b5-1 plan	358	$25.13	9K	0.3%	Form 4
Dec 9, 2025	Karen A. Foster Chief Quality and Operations	Sold10b5-1 plan	519	$25.13	13K	0.3%	Form 4
Dec 4, 2025	Troy Wichterman Chief Financial Officer	SoldNo plan	30,000	$25.72	772K	16%	Form 4
Nov 25, 2025 – Nov 26, 2025	Amy Duross Director	SoldNo plan 2 parts	4,000	$27.00 average	108K	16%	Form 4
Nov 25, 2025	Todd Berard Chief Marketing Officer	Sold10b5-1 plan	351	$26.74	9K	0.3%	Form 4
Nov 25, 2025	Troy Wichterman Chief Financial Officer	Sold10b5-1 plan	584	$26.74	16K	0.3%	Form 4
Nov 25, 2025	Sarah Aebersold Chief Human Resources Officer	Sold10b5-1 plan	217	$26.74	6K	0.3%	Form 4
Nov 25, 2025	Karen A. Foster Chief Quality and Operations	Sold10b5-1 plan	415	$26.74	11K	0.2%	Form 4
Nov 25, 2025	Sean Werner Chief Technology Officer	Sold10b5-1 plan	110	$26.74	3K	0.4%	Form 4
Nov 25, 2025	Aby J. Mathew EVP & Chief Scientific Officer	Sold10b5-1 plan	526	$26.74	14K	0.1%	Form 4
Nov 19, 2025 – Nov 21, 2025	Amy Duross Director	SoldNo plan 3 parts	6,000	$24.76 average	149K	20%	Form 4
Nov 11, 2025 – Nov 13, 2025	Roderick De Greef President and CEO	SoldNo plan 3 parts	100,000	$25.80 average	$2.58M	20%	Form 4
Oct 24, 2025	Joydeep Goswami Director	Sold10b5-1 plan	1,666	$28.99	48K	3.6%	Form 4
Oct 22, 2025	Roderick De Greef President and CEO	Sold10b5-1 plan	37,795	$27.30	$1.03M	7.2%	Form 4
Oct 20, 2025	Sean Werner Chief Technology Officer	Sold10b5-1 plan	275	$27.82	8K	1.0%	Form 4
Oct 16, 2025	Joydeep Goswami Director	Sold10b5-1 plan	1,334	—	—	2.8%	Form 4
Oct 15, 2025	Casdin Partners GP, LLC Large holder	SoldNo plan	750,000	$28.55	$21.4M	11%	Form 4
Oct 9, 2025	Troy Wichterman Chief Financial Officer	Sold10b5-1 plan	833	$27.36	23K	0.5%	Form 4
Oct 9, 2025	Todd Berard Chief Marketing Officer	Sold10b5-1 plan	289	$27.36	8K	0.2%	Form 4
Oct 9, 2025	Aby J. Mathew EVP & Chief Scientific Officer	Sold10b5-1 plan	509	$27.36	14K	0.1%	Form 4
Oct 9, 2025	Sarah Aebersold Chief Human Resources Officer	Sold10b5-1 plan	188	$27.36	5K	0.2%	Form 4
Oct 9, 2025	Karen A. Foster Chief Quality and Operations	Sold10b5-1 plan	419	$27.36	11K	0.2%	Form 4

May 19 – 21No plan
Casdin Partners Master Fund, L.p.
Large holder · sold 1,200,000 at avg $23.44
$28.1M
20% of stake
Mar 2310b5-1 plan
Karen A. Foster
Chief Quality and Operations · sold 2,577 at $19.17
49K
2.3% of stake
Mar 5 – 9No plan
Karen A. Foster
Chief Quality and Operations · sold 97,423 at avg $20.15
$1.96M
46% of stake
Mar 310b5-1 plan
Sean Werner
Chief Technology Officer · sold 111 at $20.74
2K
0.2% of stake
Mar 310b5-1 plan
Karen A. Foster
Chief Quality and Operations · sold 418 at $20.74
9K
0.2% of stake
Mar 310b5-1 plan
Aby J. Mathew
EVP & Chief Scientific Officer · sold 529 at $20.74
11K
0.1% of stake
Mar 310b5-1 plan
Troy Wichterman
Chief Financial Officer · sold 588 at $20.74
12K
0.3% of stake
Mar 310b5-1 plan
Sarah Aebersold
Chief Human Resources Officer · sold 219 at $20.74
5K
0.2% of stake
Mar 310b5-1 plan
Todd Berard
Chief Marketing Officer · sold 353 at $20.74
7K
0.2% of stake
Jan 610b5-1 plan
Troy Wichterman
Chief Financial Officer · sold 990 at $25.59
25K
0.7% of stake
Jan 610b5-1 plan
Karen A. Foster
Chief Quality and Operations · sold 335 at $25.59
9K
0.2% of stake
Jan 610b5-1 plan
Sarah Aebersold
Chief Human Resources Officer · sold 241 at $25.59
6K
0.3% of stake
Jan 610b5-1 plan
Aby J. Mathew
EVP & Chief Scientific Officer · sold 405 at $25.59
10K
0.1% of stake
Jan 610b5-1 plan
Todd Berard
Chief Marketing Officer · sold 344 at $25.59
9K
0.3% of stake
Dec 9, 2025 – Dec 15, 202510b5-1 plan
Sarah Aebersold
Chief Human Resources Officer · sold 946 at avg $24.63
23K
1.2% of stake
Dec 15, 2025No plan
Amy Duross
Director · sold 2,000 at $24.60
49K
9.7% of stake
Dec 9, 202510b5-1 plan
Aby J. Mathew
EVP & Chief Scientific Officer · sold 631 at $25.13
16K
0.2% of stake
Dec 9, 202510b5-1 plan
Troy Wichterman
Chief Financial Officer · sold 1,033 at $25.13
26K
0.7% of stake
Dec 9, 202510b5-1 plan
Todd Berard
Chief Marketing Officer · sold 358 at $25.13
9K
0.3% of stake
Dec 9, 202510b5-1 plan
Karen A. Foster
Chief Quality and Operations · sold 519 at $25.13
13K
0.3% of stake
Dec 4, 2025No plan
Troy Wichterman
Chief Financial Officer · sold 30,000 at $25.72
772K
16% of stake
Nov 25, 2025 – Nov 26, 2025No plan
Amy Duross
Director · sold 4,000 at avg $27.00
108K
16% of stake
Nov 25, 202510b5-1 plan
Todd Berard
Chief Marketing Officer · sold 351 at $26.74
9K
0.3% of stake
Nov 25, 202510b5-1 plan
Troy Wichterman
Chief Financial Officer · sold 584 at $26.74
16K
0.3% of stake
Nov 25, 202510b5-1 plan
Sarah Aebersold
Chief Human Resources Officer · sold 217 at $26.74
6K
0.3% of stake
Nov 25, 202510b5-1 plan
Karen A. Foster
Chief Quality and Operations · sold 415 at $26.74
11K
0.2% of stake
Nov 25, 202510b5-1 plan
Sean Werner
Chief Technology Officer · sold 110 at $26.74
3K
0.4% of stake
Nov 25, 202510b5-1 plan
Aby J. Mathew
EVP & Chief Scientific Officer · sold 526 at $26.74
14K
0.1% of stake
Nov 19, 2025 – Nov 21, 2025No plan
Amy Duross
Director · sold 6,000 at avg $24.76
149K
20% of stake
Nov 11, 2025 – Nov 13, 2025No plan
Roderick De Greef
President and CEO · sold 100,000 at avg $25.80
$2.58M
20% of stake
Oct 24, 202510b5-1 plan
Joydeep Goswami
Director · sold 1,666 at $28.99
48K
3.6% of stake
Oct 22, 202510b5-1 plan
Roderick De Greef
President and CEO · sold 37,795 at $27.30
$1.03M
7.2% of stake
Oct 20, 202510b5-1 plan
Sean Werner
Chief Technology Officer · sold 275 at $27.82
8K
1.0% of stake
Oct 16, 202510b5-1 plan
Joydeep Goswami
Director · sold 1,334
—
2.8% of stake
Oct 15, 2025No plan
Casdin Partners GP, LLC
Large holder · sold 750,000 at $28.55
$21.4M
11% of stake
Oct 9, 202510b5-1 plan
Troy Wichterman
Chief Financial Officer · sold 833 at $27.36
23K
0.5% of stake
Oct 9, 202510b5-1 plan
Todd Berard
Chief Marketing Officer · sold 289 at $27.36
8K
0.2% of stake
Oct 9, 202510b5-1 plan
Aby J. Mathew
EVP & Chief Scientific Officer · sold 509 at $27.36
14K
0.1% of stake
Oct 9, 202510b5-1 plan
Sarah Aebersold
Chief Human Resources Officer · sold 188 at $27.36
5K
0.2% of stake
Oct 9, 202510b5-1 plan
Karen A. Foster
Chief Quality and Operations · sold 419 at $27.36
11K
0.2% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch BLFS, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

BLFS is in 26 US ETFs. The largest of them, with BLFS's weight in each:

Spot a number that looks wrong? Check it in BLFS's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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