Insider trading

Period: 120 months Stock: COST Role: Directors × + 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.

66 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.

66 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.

66 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.

66 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.
66 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
66 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.

66 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
23 Jun 2026
DENMAN KENNETH D Director
Sold at will
$847.35K 885 at 957.45
15.6%
Not planned
16 Jan 2026
DECKER SUSAN L Director
Sold at will
$437.39K 458 at 955.00
5.1%
Not planned
18 Jun 2025
DECKER SUSAN L Director
Sold at will 2×
$536.06K 547 at 980.00
4.5%
Not planned
15 Aug 2024
DECKER SUSAN L Director
Sold at will
$543.43K 620 at 876.50
5.0%
Not planned
15 Jul 2024
DENMAN KENNETH D Director
Sold at will
$298.04K 350 at 851.53
5.6%
Not planned
9 Feb 2024
DECKER SUSAN L Director
Sold at will
$1.04M 1,442 at 723.48
10.4%
Not planned
23 Jan 2024
JELINEK W CRAIG Director
Sold at will
$5.49M 8,000 at 685.93
3.6%
Not planned
28 Jun 2023
DECKER SUSAN L Director
Sold at will
$834.15K 1,565 at 533.00
10.5%
Not planned
7 Jun 2023
DECKER SUSAN L Director
Sold at will 3×
$2.04M 3,971 at 514.14
21.0%
Not planned
12 Dec 2022
DECKER SUSAN L Director
Sold, plan not stated
$459.82K 952 at 483.00
4.8%
15 Jul 2022
DENMAN KENNETH D Director
Sold, plan not stated
$156.50K 300 at 521.68
5.5%
7 Jun 2022
Bought
$400.12K 850 at 470.74
8.1%
23 Mar 2022
DENMAN KENNETH D Director
Sold, plan not stated
$138.67K 250 at 554.68
4.4%
21 Dec 2021
Bought
$499.62K 925 at 540.13
9.7%
First buy on file
27 Jan 2021
DECKER SUSAN L Director
Sold, plan not stated 2×
$252.16K 694 at 363.35
3.6%
13 Jan 2021
DECKER SUSAN L Director
Sold, plan not stated 3×
$439.41K 1,199 at 366.48
5.8%
30 Dec 2020
DECKER SUSAN L Director
Sold, plan not stated
$323.52K 861 at 375.75
4.0%
21 Dec 2020
DECKER SUSAN L Director
Sold, plan not stated
$362.59K 1,000 at 362.59
4.4%
30 Sep 2020
DENMAN KENNETH D Director
Sold, plan not stated
$106.71K 300 at 355.69
6.3%
28 Sep 2020
DECKER SUSAN L Director
Sold, plan not stated
$869.75K 2,500 at 347.90
10.3%
14 Aug 2020
DECKER SUSAN L Director
Sold, plan not stated
$422.50K 1,250 at 338.00
4.9%
13 Aug 2020
DECKER SUSAN L Director
Sold, plan not stated
$419.79K 1,250 at 335.84
4.7%
13 Jul 2020
DECKER SUSAN L Director
Sold, plan not stated 2×
$653.20K 2,000 at 326.60
7.0%
2 Jul 2020
DECKER SUSAN L Director
Sold, plan not stated
$211.32K 685 at 308.50
2.3%
1 Jul 2020
DECKER SUSAN L Director
Sold, plan not stated
$349.47K 1,155 at 302.57
3.8%
5 Jun 2020
DECKER SUSAN L Director
Sold, plan not stated
$622.44K 1,995 at 312.00
6.1%
20 Apr 2020
DECKER SUSAN L Director
Sold, plan not stated
$314.83K 1,000 at 314.83
3.0%
20 Mar 2020
DECKER SUSAN L Director
Sold, plan not stated
$297.00K 1,000 at 297.00
2.9%
14 Jan 2020
DECKER SUSAN L Director
Sold, plan not stated
$1.16M 3,850 at 300.41
10.0%
15 Nov 2019
DECKER SUSAN L Director
Sold, plan not stated
$516.03K 1,703 at 303.01
4.2%
30 Oct 2019
LIBENSON RICHARD M Director · indirect
Sold, plan not stated
$507.91K 1,703 at 298.25
4.2%
18 Oct 2019
DECKER SUSAN L Director
Sold, plan not stated
$372.15K 1,228 at 303.05
3.0%
17 Oct 2019
DECKER SUSAN L Director
Sold, plan not stated
$304.92K 1,008 at 302.50
2.4%
11 Oct 2019
DECKER SUSAN L Director
Sold, plan not stated
$99.07K 333 at 297.50
0.8%
3 Jul 2019
DECKER SUSAN L Director
Sold, plan not stated
$441.54K 1,646 at 268.25
3.8%
7 Jun 2019
DECKER SUSAN L Director
Sold, plan not stated 3×
$710.39K 2,790 at 254.62
6.0%
1 Apr 2019
Bought
$727.94K 3,000 at 242.65
30.5%
First buy on file
26 Mar 2019
DECKER SUSAN L Director
Sold, plan not stated
$564.00K 2,350 at 240.00
4.8%
12 Mar 2019
DECKER SUSAN L Director
Sold, plan not stated
$475.37K 2,049 at 232.00
4.0%
4 Jan 2019
DECKER SUSAN L Director
Sold, plan not stated 2×
$332.11K 1,611 at 206.15
3.1%
2 Jan 2019
DECKER SUSAN L Director
Sold, plan not stated
$151.50K 739 at 205.00
1.4%
25 Oct 2018
LIBENSON RICHARD M Director · indirect
Sold, plan not stated
$458.98K 2,049 at 224.00
5.0%
1 Oct 2018
MEISENBACH JOHN W Director · indirect
Sold, plan not stated
$707.43K 3,000 at 235.81
20.0%
4 Sep 2018
MEISENBACH JOHN W Director · indirect
Sold, plan not stated
$699.42K 3,000 at 233.14
16.7%
1 Aug 2018
MEISENBACH JOHN W Director · indirect
Sold, plan not stated
$655.95K 3,000 at 218.65
14.3%
2 Jul 2018
MEISENBACH JOHN W Director · indirect
Sold, plan not stated
$625.26K 3,000 at 208.42
12.5%
1 Jun 2018
MEISENBACH JOHN W Director · indirect
Sold, plan not stated
$586.35K 3,000 at 195.45
11.1%
1 May 2018
MEISENBACH JOHN W Director · indirect
Sold, plan not stated
$589.47K 3,000 at 196.49
10.0%
2 Apr 2018
MEISENBACH JOHN W Director · indirect
Sold, plan not stated
$560.73K 3,000 at 186.91
9.1%
1 Mar 2018
MEISENBACH JOHN W Director · indirect
Sold, plan not stated
$573.93K 3,000 at 191.31
8.3%
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