Insider trading

Period: 120 months Stock: BLFS Minimum amount: $100K × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

386 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

386 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

386 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

386 decisions over 120 months Remove this filter
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
386 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
386 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

386 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
21 May 2026
Casdin Partners Master Fund, L.P. 10% owner · indirect
Sold at will
$15.41M 650,000 at 23.70
12.0%
Not planned
20 May 2026
Casdin Partners Master Fund, L.P. 10% owner · indirect
Sold at will
$5.93M 250,000 at 23.70
4.4%
Not planned
19 May 2026
Casdin Partners Master Fund, L.P. 10% owner · indirect
Sold at will
$6.80M 300,000 at 22.65
5.0%
Not planned
5 Mar 2026
Foster Karen A. Chief Quality and Operations
Sold at will
$1.95M 96,923 at 20.15
46.0%
Not planned
4 Dec 2025
Wichterman Troy Chief Financial Officer
Sold at will
$771.60K 30,000 at 25.72
16.4%
Not planned
20 Nov 2025
DuRoss Amy Director
Sold at will
$110.86K 4,523 at 24.51
15.0%
Not planned
13 Nov 2025
DE GREEF RODERICK President and CEO
Sold at will
$789.41K 31,165 at 25.33
7.4%
Not planned
12 Nov 2025
DE GREEF RODERICK President and CEO
Sold at will
$864.86K 33,418 at 25.88
7.4%
Not planned
11 Nov 2025
DE GREEF RODERICK President and CEO
Sold at will
$926.15K 35,417 at 26.15
7.2%
Not planned
22 Oct 2025
DE GREEF RODERICK President and CEO
Sold on a plan
$1.03M 37,795 at 27.30
7.2%
Planned (10b5-1)
15 Oct 2025
Casdin Partners Master Fund, L.P. 10% owner · indirect
Sold at will
$21.41M 750,000 at 28.55
11.2%
Not planned
25 Aug 2025
Berard Todd Chief Marketing Officer
Sold at will
$255.30K 10,000 at 25.53
7.4%
Not planned
15 Aug 2025
Casdin Partners Master Fund, L.P. 10% owner · indirect
Sold at will
$12.20M 500,000 at 24.40
6.9%
Not planned
11 Aug 2025
Casdin Partners Master Fund, L.P. 10% owner · indirect
Sold at will
$11.30M 500,000 at 22.60
6.5%
Not planned
10 Jun 2025
Casdin Partners Master Fund, L.P. 10% owner · indirect
Sold at will
$23.80M 1,000,000 at 23.80
11.5%
Not planned
1 Apr 2025
Wichterman Troy Chief Financial Officer
Sold on a plan
$582.07K 25,687 at 22.66
12.0%
Planned (10b5-1)
1 Apr 2025
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$239.95K 10,589 at 22.66
3.3%
Planned (10b5-1)
1 Apr 2025
Berard Todd Chief Marketing Officer
Sold on a plan
$201.72K 8,902 at 22.66
6.1%
Planned (10b5-1)
1 Apr 2025
Foster Karen A. Chief Quality and Operations
Sold on a plan
$178.31K 7,869 at 22.66
3.9%
Planned (10b5-1)
1 Apr 2025
Aebersold Sarah Chief Human Resources Officer
Sold on a plan
$130.77K 5,771 at 22.66
6.7%
Planned (10b5-1)
14 Mar 2025
DuRoss Amy Director
Sold on a plan
$140.57K 5,632 at 24.96
19.1%
Planned (10b5-1)
14 Mar 2025
Aebersold Sarah Chief Human Resources Officer
Sold on a plan
$140.57K 5,632 at 24.96
10.9%
Planned (10b5-1)
12 Mar 2025
Aebersold Sarah Chief Human Resources Officer
Sold on a plan
$192.91K 7,324 at 26.34
12.5%
Planned (10b5-1)
11 Mar 2025
Wichterman Troy Chief Financial Officer
Sold on a plan
$103.78K 4,151 at 25.00
3.4%
Planned (10b5-1)
17 Dec 2024
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$358.40K 13,196 at 27.16
4.8%
Planned (10b5-1)
16 Dec 2024
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$207.82K 7,604 at 27.33
2.7%
Planned (10b5-1)
18 Nov 2024
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$352.96K 17,604 at 20.05
5.8%
Planned (10b5-1)
15 Nov 2024
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan 2×
$529.15K 25,000 at 21.17
7.6%
Planned (10b5-1)
31 Oct 2024
DE GREEF RODERICK President and CEO
Sold on a plan
$1.10M 46,896 at 23.43
10.2%
Planned (10b5-1)
16 Oct 2024
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$231.70K 10,000 at 23.17
3.1%
Planned (10b5-1)
15 Oct 2024
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$232.80K 10,000 at 23.28
3.1%
Planned (10b5-1)
19 Sep 2024
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$254.70K 10,000 at 25.47
3.1%
Planned (10b5-1)
18 Sep 2024
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$239.00K 10,000 at 23.90
3.1%
Planned (10b5-1)
14 Jun 2024
Berard Todd Chief Marketing Officer
Sold on a plan
$201.80K 10,000 at 20.18
8.4%
Planned (10b5-1)
15 May 2024
Berard Todd Chief Marketing Officer
Sold on a plan
$226.70K 10,000 at 22.67
7.7%
Planned (10b5-1)
15 Apr 2024
Berard Todd Chief Marketing Officer
Sold on a plan
$156.70K 10,000 at 15.67
7.2%
Planned (10b5-1)
12 Mar 2024
Wichterman Troy Chief Financial Officer
Sold on a plan
$120.33K 7,249 at 16.60
5.4%
Planned (10b5-1)
12 Mar 2024
DE GREEF RODERICK President and CEO
Sold on a plan
$120.33K 7,249 at 16.60
1.5%
Planned (10b5-1)
12 Mar 2024
Berard Todd Chief Marketing Officer
Sold on a plan
$117.98K 7,107 at 16.60
4.8%
Planned (10b5-1)
12 Mar 2024
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$108.25K 6,521 at 16.60
2.0%
Planned (10b5-1)
12 Mar 2024
DuRoss Amy Director
Sold at will
$103.44K 6,135 at 16.86
15.1%
Not planned
30 Oct 2023
Rice Michael Former CEO and Director
Sold on a plan
$662.87K 72,603 at 9.13
17.3%
Planned (10b5-1)
19 Oct 2023
Bought
$10.37M 927,165 at 11.19
12.2%
9 Aug 2023
Bought
$771.74K 58,465 at 13.20
0.8%
20 Jul 2023
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$200.70K 10,000 at 20.07
3.5%
Planned (10b5-1)
19 Jul 2023
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$204.60K 10,000 at 20.46
3.5%
Planned (10b5-1)
22 Jun 2023
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$233.20K 10,000 at 23.32
3.5%
Planned (10b5-1)
21 Jun 2023
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$229.70K 10,000 at 22.97
3.5%
Planned (10b5-1)
25 May 2023
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$223.30K 10,000 at 22.33
3.5%
Planned (10b5-1)
24 May 2023
Mathew Aby J. EVP & Chief Scientific Officer
Sold on a plan
$221.40K 10,000 at 22.14
3.5%
Planned (10b5-1)
Showing 1–50 of 386. Page 1 of 8 Older →