Insider trading

Period: 12 months Stock: CSTL Type of trade: Sold × Minimum amount: $100K × + 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.

57 decisions over 12 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.

57 decisions over 12 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.

57 decisions over 12 months Remove this filter
The trade

Minimum amount

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

57 decisions over 12 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.
57 decisions over 12 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
57 decisions over 12 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.

57 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
5 Oct 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$305.16K 8,580 at 35.57
28.9%
Planned (10b5-1)
5 Oct 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer · indirect
Sold on a plan
$113.74K 3,198 at 35.57
28.5%
Planned (10b5-1)
1 Oct 2026
Oelschlager Kristen M Chief Operating Officer
Sold on a plan 2×
$149.32K 4,153 at 35.95
23.7%
Planned (10b5-1)
29 Sep 2026
Juvenal Tobin W Chief Commercial Officer
Sold on a plan
$196.77K 5,543 at 35.50
9.5%
Planned (10b5-1)
21 Sep 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$303.17K 8,580 at 35.33
28.5%
Planned (10b5-1)
21 Sep 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer · indirect
Sold on a plan
$113.00K 3,198 at 35.33
22.2%
Planned (10b5-1)
15 Sep 2026
Juvenal Tobin W Chief Commercial Officer
Sold on a plan
$115.76K 3,294 at 35.14
5.3%
Planned (10b5-1)
14 Sep 2026
Juvenal Tobin W Chief Commercial Officer
Sold on a plan
$106.86K 3,306 at 32.32
5.1%
Planned (10b5-1)
11 Sep 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan 2×
$274.86K 8,584 at 32.02
28.6%
Planned (10b5-1)
11 Sep 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer · indirect
Sold on a plan 2×
$102.69K 3,207 at 32.02
18.2%
Planned (10b5-1)
1 Sep 2026
Oelschlager Kristen M Chief Operating Officer
Sold on a plan 2×
$138.64K 4,152 at 33.39
23.7%
Planned (10b5-1)
28 Aug 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan 2×
$412.57K 12,428 at 33.20
36.7%
Planned (10b5-1)
25 Aug 2026
Oelschlager Kristen M Chief Operating Officer · indirect
Sold at will 2×
$426.28K 12,384 at 34.42
14.6%
Not planned
25 Aug 2026
Juvenal Tobin W Chief Commercial Officer
Sold on a plan
$317.11K 9,050 at 35.04
11.9%
Planned (10b5-1)
24 Aug 2026
Oelschlager Kristen M Chief Operating Officer · indirect
Sold at will
$411.59K 12,218 at 33.69
12.6%
Not planned
14 Aug 2026
Stokes Frank Chief Financial Officer
Sold at will
$741.51K 24,908 at 29.77
41.5%
Not planned
14 Aug 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer · indirect
Sold on a plan 6×
$184.08K 6,132 at 30.02
34.7%
Planned (10b5-1)
4 Aug 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan 2×
$633.26K 20,356 at 31.11
48.7%
Planned (10b5-1)
4 Aug 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer · indirect
Sold on a plan 4×
$469.28K 15,085 at 31.11
42.9%
Planned (10b5-1)
3 Aug 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$323.68K 10,664 at 30.35
33.2%
Planned (10b5-1)
3 Aug 2026
Oelschlager Kristen M Chief Operating Officer
Sold on a plan 3×
$255.62K 8,586 at 29.77
39.3%
Planned (10b5-1)
3 Aug 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer · indirect
Sold on a plan 2×
$237.63K 7,829 at 30.35
22.5%
Planned (10b5-1)
31 Jul 2026
Juvenal Tobin W Chief Commercial Officer
Sold on a plan 3×
$507.30K 17,310 at 29.31
17.7%
Planned (10b5-1)
31 Jul 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$195.38K 6,480 at 30.15
23.2%
Planned (10b5-1)
31 Jul 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer · indirect
Sold on a plan 2×
$110.75K 3,673 at 30.15
10.7%
Planned (10b5-1)
27 Jul 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan 2×
$150.16K 6,214 at 24.16
22.4%
Planned (10b5-1)
1 Jul 2026
Oelschlager Kristen M Chief Operating Officer
Sold on a plan 2×
$209.65K 8,586 at 24.42
28.2%
Planned (10b5-1)
1 Jul 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$150.94K 6,214 at 24.29
22.4%
Planned (10b5-1)
16 Jun 2026
Oelschlager Kristen M Chief Operating Officer
Sold on a plan
$177.84K 8,587 at 20.71
22.0%
Planned (10b5-1)
1 Jun 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$129.61K 6,214 at 20.86
22.4%
Planned (10b5-1)
7 May 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan 2×
$137.66K 6,214 at 22.15
22.4%
Planned (10b5-1)
6 Apr 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$155.54K 6,214 at 25.03
22.4%
Planned (10b5-1)
17 Mar 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$483.59K 18,650 at 25.93
45.7%
Planned (10b5-1)
16 Mar 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan 2×
$456.41K 17,575 at 25.97
30.1%
Planned (10b5-1)
13 Mar 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$336.00K 13,204 at 25.45
18.5%
Planned (10b5-1)
12 Mar 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$585.94K 23,179 at 25.28
24.5%
Planned (10b5-1)
12 Mar 2026
Juvenal Tobin W Chief Commercial Officer
Sold on a plan
$526.58K 20,863 at 25.24
19.4%
Planned (10b5-1)
11 Mar 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$451.95K 17,310 at 26.11
15.4%
Planned (10b5-1)
5 Mar 2026
Cole G Bradley Director
Sold at will 2×
$210.73K 7,403 at 28.47
27.7%
Not planned
5 Mar 2026
Stokes Frank Chief Financial Officer
Sold on a plan
$167.91K 6,001 at 27.98
9.1%
Planned (10b5-1)
3 Mar 2026
Stokes Frank Chief Financial Officer
Sold on a plan 2×
$192.07K 7,000 at 27.44
11.8%
Planned (10b5-1)
3 Feb 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$127.72K 3,200 at 39.91
3.6%
Planned (10b5-1)
20 Jan 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$160.73K 4,017 at 40.01
4.4%
Planned (10b5-1)
5 Jan 2026
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$102.01K 2,678 at 38.09
8.0%
Planned (10b5-1)
17 Dec 2025
Oelschlager Kristen M Chief Operating Officer
Sold at will
$585.29K 14,888 at 39.31
54.7%
Sold half or more
16 Dec 2025
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$494.30K 12,821 at 38.55
26.9%
Planned (10b5-1)
15 Dec 2025
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan 2×
$757.10K 19,525 at 38.78
29.0%
Planned (10b5-1)
11 Dec 2025
Juvenal Tobin W Chief Commercial Officer
Sold at will
$494.74K 13,200 at 37.48
13.2%
Not planned
11 Dec 2025
Stokes Frank Chief Financial Officer
Sold at will
$168.38K 4,496 at 37.45
8.2%
Not planned
2 Dec 2025
MAETZOLD DEREK J Pres. & Chief Exec. Officer
Sold on a plan
$105.06K 2,678 at 39.23
6.4%
Planned (10b5-1)
Showing 1–50 of 57. Page 1 of 2 Older →