Insider trading

Period: 120 months Stock: CTMX Role: CEO × + 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.

38 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.

38 decisions over 120 months Remove this filter
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.

38 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.

38 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.
38 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
38 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.

38 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
17 Mar 2026
Sold on a plan
$764.14K 118,969 at 6.42
9.9%
Planned (10b5-1)
6 Nov 2025
Sold on a plan
$461.91K 101,793 at 4.54
9.3%
Planned (10b5-1)
16 Jun 2025
Sold at will
$149.26K 55,511 at 2.69
4.8%
Not planned
18 Mar 2025
Sold at will
$22.56K 37,656 at 0.60
3.6%
Not planned
20 Aug 2024
Sold at will
$17.08K 13,898 at 1.23
2.1%
Not planned
19 Mar 2024
Sold at will
$42.18K 20,223 at 2.09
3.7%
Not planned
20 Dec 2023
Sold at will
$18.71K 13,551 at 1.38
2.9%
Not planned
22 Sep 2023
Sold at will
$18.99K 14,601 at 1.30
3.3%
Not planned
16 Mar 2023
Sold at will
$13.39K 7,121 at 1.88
1.8%
Not planned
20 Jul 2022
McCarthy Sean A. President and CEO
Sold, plan not stated
$21.21K 14,911 at 1.42
4.9%
16 Jun 2021
McCarthy Sean A. President and CEO · indirect
Sold, plan not stated
$704.47K 100,000 at 7.04
51.8%
Sold half or more
31 Mar 2021
McCarthy Sean A. President and CEO
Sold, plan not stated
$749.47K 100,000 at 7.49
32.6%
12 May 2020
McCarthy Sean A. President and CEO
Sold, plan not stated
$540.00K 36,000 at 15.00
29.9%
2 Nov 2018
McCarthy Sean A. President and CEO
Sold, plan not stated
$17.35K 1,156 at 15.01
1.4%
1 Nov 2018
McCarthy Sean A. President and CEO
Sold, plan not stated 2×
$80.55K 5,370 at 15.00
6.1%
4 Sep 2018
McCarthy Sean A. President and CEO
Sold, plan not stated
$285.34K 13,052 at 21.86
13.7%
5 Jul 2018
McCarthy Sean A. President and CEO
Sold, plan not stated
$112.69K 4,497 at 25.06
5.2%
3 Jul 2018
McCarthy Sean A. President and CEO
Sold, plan not stated
$50.88K 2,028 at 25.09
2.4%
2 Jul 2018
McCarthy Sean A. President and CEO
Sold, plan not stated
$305.71K 13,052 at 23.42
13.7%
1 May 2018
McCarthy Sean A. President and CEO
Sold, plan not stated
$519.74K 19,578 at 26.55
80.8%
Sold half or more
1 Mar 2018
McCarthy Sean A. President and CEO
Sold, plan not stated
$576.14K 19,578 at 29.43
80.8%
Sold half or more
5 Jan 2018
McCarthy Sean A. President and CEO
Sold, plan not stated
$163.22K 6,526 at 25.01
58.4%
Sold half or more
2 Jan 2018
McCarthy Sean A. President and CEO
Sold, plan not stated
$274.61K 13,052 at 21.04
73.8%
Sold half or more
1 Dec 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$295.40K 14,340 at 20.60
75.5%
Sold half or more
1 Nov 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$284.83K 14,342 at 19.86
77.2%
Sold half or more
4 Oct 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$461.37K 19,120 at 24.13
81.8%
Sold half or more
2 Oct 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$177.57K 9,562 at 18.57
69.3%
Sold half or more
1 Sep 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$171.99K 9,930 at 17.32
70.1%
Sold half or more
31 Aug 2017
McCarthy Sean A. President and CEO
Sold, plan not stated 2×
$328.26K 18,756 at 17.50
81.5%
Sold half or more
9 Aug 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$71.72K 4,781 at 15.00
53.0%
Sold half or more
3 Jul 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$74.20K 4,781 at 15.52
53.0%
Sold half or more
26 Jun 2017
McCarthy Sean A. President and CEO
Bought
$67.22K 4,481 at 15.00
opened
First buy on file
5 Jun 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$4.50K 300 at 15.00
6.6%
1 May 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$75.06K 4,781 at 15.70
70.7%
Sold half or more
4 Apr 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$83.67K 4,781 at 17.50
70.7%
Sold half or more
3 Apr 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$80.99K 4,781 at 16.94
70.7%
Sold half or more
20 Mar 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$281.12K 14,343 at 19.60
87.9%
Sold half or more
3 Mar 2017
McCarthy Sean A. President and CEO
Sold, plan not stated
$215.15K 14,343 at 15.00
87.9%
Sold half or more
Showing 1–38 of 38.