Insider trading

Period: 120 months Stock: CTSO Plan: Discretionary × + 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.

22 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.

22 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.

22 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.

22 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.
22 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
22 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.

22 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
15 Sep 2026
Chan Phillip P. Chief Executive Officer
Bought
$22.64K 3,774 at 6.00
3.9%
Cluster · 3 buyers
15 Sep 2026
Sobel Alan D. Director
Bought 3×
$15.25K 2,500 at 6.10
33.8%
Cluster · 3 buyers
14 Sep 2026
Capponi Vincent President and COO
Bought 2×
$12.54K 2,073 at 6.05
5.4%
Cluster · 3 buyers
4 Sep 2026
Chan Phillip P. Chief Executive Officer
Bought
$70.00K 200,000 at 0.35
11.5%
Cluster · 3 buyers
15 Jun 2026
MARIANI PETER J Chief Financial Officer
Bought
$44.00K 100,000 at 0.44
18.6%
Cluster · 3 buyers
15 Jun 2026
Chan Phillip P. Chief Executive Officer
Bought
$4.44K 10,333 at 0.43
0.6%
Cluster · 3 buyers
12 Jun 2026
Chan Phillip P. Chief Executive Officer
Bought
$100.45K 251,136 at 0.40
16.9%
Cluster · 3 buyers
13 Dec 2024
MARIANI PETER J Chief Financial Officer
Bought
$19.29K 20,000 at 0.96
5.2%
Cluster · 3 buyers
12 Dec 2024
MARIANI PETER J Chief Financial Officer
Bought
$17.87K 20,000 at 0.89
5.5%
Cluster · 3 buyers
11 Dec 2024
MARIANI PETER J Chief Financial Officer
Bought
$10.10K 11,363 at 0.89
3.2%
Cluster · 3 buyers
13 Dec 2023
Chan Phillip P. Chief Executive Officer
Bought
$100.00K 75,188 at 1.33
7.6%
Cluster · 3 buyers
13 Dec 2023
BLOCH KATHLEEN P. Chief Financial Officer
Bought
$50.00K 37,594 at 1.33
8.7%
Cluster · 3 buyers
13 Dec 2023
BATOR MICHAEL G. Director
Bought
$50.00K 37,594 at 1.33
42.8%
Cluster · 3 buyers
13 Dec 2023
Deliargyris Efthymios Chief Medical Officer
Bought
$30.00K 22,557 at 1.33
6.9%
Cluster · 3 buyers
13 Dec 2023
Sobel Alan D. Director
Bought
$30.00K 22,557 at 1.33
28.4%
Cluster · 3 buyers
13 Dec 2023
Capponi Vincent President & COO
Bought
$25.00K 18,797 at 1.33
3.3%
Cluster · 3 buyers
13 Dec 2023
Kim Jiny Director
Bought
$10.00K 7,519 at 1.33
10.7%
Cluster · 3 buyers
13 Dec 2023
Bought
$10.00K 7,519 at 1.33
9.2%
Cluster · 3 buyers
7 Aug 2023
BATOR MICHAEL G. Director
Bought 2×
$6.35K 2,000 at 3.18
2.3%
Cluster · 3 buyers
4 Aug 2023
BATOR MICHAEL G. Director
Bought
$3.23K 1,000 at 3.23
1.2%
Cluster · 3 buyers
25 May 2023
BLOCH KATHLEEN P. Interim CFO · indirect
Bought 3×
$9.39K 3,300 at 2.85
7.6%
Cluster · 3 buyers
10 May 2023
BLOCH KATHLEEN P. Interim CFO · indirect
Bought 3×
$31.06K 10,000 at 3.11
29.7%
Cluster · 3 buyers
Showing 1–22 of 22.