Insider trading

Period: 120 months Stock: CTKB + Add filter Clear all
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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.

97 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.

97 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.

97 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.

97 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.
97 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
97 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.

97 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
2 Jun 2025
McCombe William D. Chief Financial Officer
Bought
$97.30K 35,000 at 2.78
169%
First buy on file
19 Apr 2024
Yan Ming CHIEF TECHNOLOGY OFFICER
Sold on a plan
$117.40K 20,000 at 5.87
0.3%
Planned (10b5-1)
9 Apr 2024
Yan Ming CHIEF TECHNOLOGY OFFICER
Sold at will 2×
$13.30K 1,900 at 7.00
0.0%
Not planned
19 Mar 2024
Yan Ming CHIEF TECHNOLOGY OFFICER
Sold on a plan
$134.20K 20,000 at 6.71
0.3%
Planned (10b5-1)
18 Mar 2024
Yan Ming CHIEF TECHNOLOGY OFFICER
Sold on a plan
$135.40K 20,000 at 6.77
0.3%
Planned (10b5-1)
26 Dec 2023
Jeanmonod Patrik Chief Financial Officer
Sold on a plan
$28.50K 3,000 at 9.50
3.1%
Planned (10b5-1)
19 Dec 2023
Yan Ming Chief Technology Officer
Sold at will
$188.60K 20,000 at 9.43
0.3%
Not planned
24 Nov 2023
Jeanmonod Patrik Chief Financial Officer
Sold at will
$20.82K 3,000 at 6.94
3.0%
Not planned
20 Nov 2023
Yan Ming Chief Technology Officer
Sold at will
$120.60K 20,000 at 6.03
0.3%
Not planned
7 Nov 2023
Jiang Wenbin President and CEO
Sold at will
$86.80K 20,000 at 4.34
0.4%
Not planned
24 Oct 2023
Jeanmonod Patrik Chief Financial Officer
Sold on a plan
$14.04K 3,000 at 4.68
3.0%
Planned (10b5-1)
19 Oct 2023
Yan Ming Chief Technology Officer
Sold at will
$96.00K 20,000 at 4.80
0.3%
Not planned
9 Oct 2023
Jiang Wenbin President and CEO
Sold on a plan
$106.60K 20,000 at 5.33
0.4%
Planned (10b5-1)
25 Sep 2023
Jeanmonod Patrik Chief Financial Officer
Sold on a plan
$19.14K 3,000 at 6.38
2.9%
Planned (10b5-1)
19 Sep 2023
Yan Ming Chief Technology Officer
Sold at will
$129.80K 20,000 at 6.49
0.3%
Not planned
7 Sep 2023
Jiang Wenbin President and CEO
Sold at will
$136.60K 20,000 at 6.83
0.3%
Not planned
24 Aug 2023
Jeanmonod Patrik Chief Financial Officer
Sold on a plan
$23.07K 3,000 at 7.69
2.9%
Planned (10b5-1)
21 Aug 2023
Yan Ming Chief Technology Officer
Sold on a plan
$161.40K 20,000 at 8.07
0.3%
Planned (10b5-1)
7 Aug 2023
Jiang Wenbin President and CEO
Sold at will
$180.80K 20,000 at 9.04
0.3%
Not planned
24 Jul 2023
Jeanmonod Patrik Chief Financial Officer
Bought on a plan
$27.51K 3,000 at 9.17
3.0%
Bought on a plan
19 Jul 2023
Yan Ming Chief Technology Officer
Sold on a plan
$175.20K 20,000 at 8.76
0.3%
Planned (10b5-1)
7 Jul 2023
Jiang Wenbin President and CEO
Sold on a plan
$169.60K 20,000 at 8.48
0.3%
Planned (10b5-1)
26 Jun 2023
Jeanmonod Patrik Chief Financial Officer
Sold at will
$23.88K 3,000 at 7.96
2.8%
Not planned
20 Jun 2023
Yan Ming Chief Technology Officer
Sold on a plan
$163.60K 20,000 at 8.18
0.3%
Planned (10b5-1)
7 Jun 2023
Jiang Wenbin President and CEO
Sold on a plan
$164.60K 20,000 at 8.23
0.3%
Planned (10b5-1)
24 May 2023
Jeanmonod Patrik Chief Financial Officer
Sold on a plan
$23.28K 3,000 at 7.76
2.7%
Planned (10b5-1)
19 May 2023
Yan Ming Chief Technology Officer
Sold on a plan
$143.80K 20,000 at 7.19
0.3%
Planned (10b5-1)
8 May 2023
Jiang Wenbin President and CEO
Sold on a plan
$231.00K 20,000 at 11.55
0.3%
Planned (10b5-1)
24 Apr 2023
Jeanmonod Patrik Chief Financial Officer
Sold on a plan
$30.72K 3,000 at 10.24
2.7%
Planned (10b5-1)
19 Apr 2023
Yan Ming Chief Technology Officer
Sold on a plan
$194.20K 20,000 at 9.71
0.3%
Planned (10b5-1)
10 Apr 2023
Jiang Wenbin President and CEO
Sold on a plan
$177.60K 20,000 at 8.88
0.3%
Planned (10b5-1)
24 Mar 2023
Jeanmonod Patrik Chief Financial Officer
Sold at will
$24.99K 3,000 at 8.33
2.6%
Not planned
20 Mar 2023
Yan Ming Chief Technology Officer
Sold at will
$185.80K 20,000 at 9.29
0.3%
Not planned
7 Mar 2023
Jiang Wenbin President and CEO
Sold, plan not stated
$202.60K 20,000 at 10.13
0.3%
24 Feb 2023
Jeanmonod Patrik Chief Financial Officer
Sold, plan not stated
$33.15K 3,000 at 11.05
2.6%
21 Feb 2023
Yan Ming Chief Technology Officer
Sold, plan not stated
$218.80K 20,000 at 10.94
0.3%
8 Feb 2023
Yan Ming Chief Technology Officer
Sold, plan not stated
$12.14K 897 at 13.53
0.0%
7 Feb 2023
Jiang Wenbin President and CEO
Sold, plan not stated
$263.80K 20,000 at 13.19
0.3%
3 Feb 2023
Yan Ming Chief Technology Officer
Sold, plan not stated 2×
$14.74K 1,092 at 13.50
0.0%
24 Jan 2023
Jeanmonod Patrik Chief Financial Officer
Sold, plan not stated
$38.68K 3,500 at 11.05
4.4%
19 Jan 2023
Yan Ming Chief Technology Officer
Sold, plan not stated
$220.60K 20,000 at 11.03
0.3%
9 Jan 2023
Jiang Wenbin President and CEO
Sold, plan not stated
$213.20K 20,000 at 10.66
0.3%
27 Dec 2022
Jeanmonod Patrik Chief Financial Officer
Sold, plan not stated
$34.20K 3,500 at 9.77
4.2%
19 Dec 2022
Yan Ming Chief Technology Officer
Sold, plan not stated
$207.60K 20,000 at 10.38
0.3%
7 Dec 2022
Jiang Wenbin President and CEO
Sold, plan not stated
$237.20K 20,000 at 11.86
0.3%
25 Nov 2022
Jeanmonod Patrik Chief Financial Officer
Sold, plan not stated
$50.05K 3,500 at 14.30
4.0%
21 Nov 2022
Yan Ming Chief Technology Officer
Sold, plan not stated
$293.20K 20,000 at 14.66
0.2%
14 Nov 2022
Ball Jack Director
Sold, plan not stated
$235.04K 16,000 at 14.69
84.2%
Sold half or more
7 Nov 2022
Jiang Wenbin President and CEO
Sold, plan not stated
$295.20K 20,000 at 14.76
0.3%
24 Oct 2022
Jeanmonod Patrik Chief Financial Officer
Sold, plan not stated
$53.06K 3,500 at 15.16
3.9%
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