Insider trading

Period: 120 months Stock: CERS Plan: Discretionary × + Add filter Clear all
Views & alerts

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When

Period

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

27 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.

27 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.

27 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.

27 decisions over 120 months
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.
27 decisions over 120 months Remove this filter
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
27 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.

27 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
9 Jun 2026
BJERKHOLT ERIC Director
Sold at will
$53.18K 20,454 at 2.60
7.2%
Not planned
25 Aug 2025
Gregory Dean A. Director
Bought
$31.25K 25,000 at 1.25
40.5%
Largest buy in 3 yrs
12 Dec 2024
BJERKHOLT ERIC Director
Sold at will
$35.70K 20,000 at 1.79
11.0%
Not planned
13 May 2024
Shan Hua Director
Bought
$4.97K 2,500 at 1.99
8.4%
First buy on file
10 May 2024
Bought
$3.58K 2,000 at 1.79
1.9%
First buy on file
9 May 2024
Witney Frank Director
Bought
$37.80K 20,000 at 1.89
12.5%
First buy on file
9 May 2024
Bought
$4.69K 2,500 at 1.88
2.4%
14 Mar 2024
Greenman William Mariner President and CEO
Sold at will
$128.20K 63,611 at 2.02
2.0%
Not planned
14 Mar 2024
Jayaraman Vivek K Chief Operating Officer
Sold at will
$52.90K 26,794 at 1.97
3.0%
Not planned
14 Mar 2024
Green Kevin Dennis Chief Financial Officer
Sold at will
$42.44K 21,497 at 1.97
3.4%
Not planned
14 Mar 2024
Jensen Chrystal Chief Legal Officer
Sold at will
$35.19K 17,824 at 1.97
3.5%
Not planned
14 Mar 2024
Benjamin Richard J Chief Medical Officer
Sold at will
$35.02K 17,738 at 1.97
3.7%
Not planned
14 Mar 2024
CORASH LAURENCE M Chief Scientific Officer
Sold at will
$28.35K 14,360 at 1.97
0.6%
Not planned
13 Mar 2024
Greenman William Mariner President and CEO
Sold at will
$128.18K 62,315 at 2.06
1.9%
Not planned
13 Mar 2024
Jayaraman Vivek K Chief Operating Officer
Sold at will
$53.99K 26,247 at 2.06
2.8%
Not planned
13 Mar 2024
Green Kevin Dennis Chief Financial Officer
Sold at will
$42.44K 21,058 at 2.02
3.2%
Not planned
13 Mar 2024
Moore Carol SVP Reg. & Quality
Sold at will 2×
$41.55K 20,619 at 2.02
4.0%
Not planned
13 Mar 2024
Jensen Chrystal Chief Legal Officer
Sold at will
$35.92K 17,460 at 2.06
3.3%
Not planned
13 Mar 2024
Benjamin Richard J Chief Medical Officer
Sold at will
$35.74K 17,377 at 2.06
3.5%
Not planned
13 Mar 2024
CORASH LAURENCE M Chief Scientific Officer
Sold at will
$28.94K 14,067 at 2.06
0.6%
Not planned
8 Mar 2024
Benjamin Richard J Chief Medical Officer
Sold at will
$70.46K 29,378 at 2.40
5.8%
Not planned
13 Dec 2023
BJERKHOLT ERIC Director
Bought
$16.20K 10,000 at 1.62
7.6%
22 Aug 2023
Lucena Ann Director
Bought
$12.64K 7,500 at 1.69
11.6%
First buy on file
21 Aug 2023
BJERKHOLT ERIC Director
Bought
$17.15K 10,000 at 1.72
8.2%
Largest buy in 3 yrs
26 May 2023
Bought
$9.54K 5,000 at 1.91
4.4%
First buy on file
24 May 2023
SCHULZE GAIL Director
Bought
$19.98K 9,850 at 2.03
13.4%
First buy on file
23 May 2023
BJERKHOLT ERIC Director
Bought
$10.00K 5,000 at 2.00
6.5%
First buy on file
Showing 1–27 of 27.