Insider trading

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

52 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.

52 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.

52 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.

52 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.
52 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
52 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.

52 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
4 May 2026
Dalvey David Director · indirect
Sold on a plan
$3.52M 25,000 at 140.68
27.8%
Planned (10b5-1)
4 May 2026
Buller Richard E Director · indirect
Sold on a plan 6×
$1.26M 9,000 at 140.46
57.1%
Sold half or more
31 Mar 2026
Buller Richard E Director · indirect
Sold on a plan 2×
$330.80K 3,000 at 110.27
30.7%
Planned (10b5-1)
27 Jan 2026
Dalvey David Director · indirect
Sold on a plan
$2.40M 20,000 at 120.03
18.2%
Planned (10b5-1)
5 Dec 2025
Buller Richard E Director · indirect
Sold at will 2×
$317.07K 3,000 at 105.69
30.7%
Not planned
1 Dec 2025
Buller Richard E Director · indirect
Sold at will
$107.95K 1,100 at 98.13
13.2%
Not planned
21 Nov 2025
Dalvey David Director · indirect
Sold on a plan
$1.50M 15,000 at 100.00
12.0%
Planned (10b5-1)
20 Nov 2025
Buller Richard E Director · indirect
Sold at will
$377.25K 3,900 at 96.73
34.9%
Not planned
28 Jul 2025
Dalvey David Director · indirect
Sold on a plan 4×
$4.40M 100,000 at 43.98
44.4%
Planned (10b5-1)
28 Jul 2025
Dalvey David Director
Sold on a plan 3×
$420.77K 9,325 at 45.12
100%
Sold half or more
23 Oct 2024
Buller Richard E Director · indirect
Sold on a plan
$5.69K 350 at 16.25
5.0%
Planned (10b5-1)
23 Aug 2024
Buller Richard E Director · indirect
Sold on a plan
$5.93K 350 at 16.95
4.7%
Planned (10b5-1)
21 Jun 2024
Buller Richard E Director · indirect
Sold on a plan
$5.49K 350 at 15.68
4.5%
Planned (10b5-1)
24 Apr 2024
Buller Richard E Director
Sold on a plan
$5.97K 350 at 17.06
4.3%
Planned (10b5-1)
21 Feb 2024
Buller Richard E Director
Sold on a plan
$4.95K 350 at 14.15
4.2%
Planned (10b5-1)
20 Dec 2023
Buller Richard E Director
Sold on a plan
$5.03K 350 at 14.37
4.0%
Planned (10b5-1)
15 Dec 2023
Dalvey David Director · indirect
Sold at will
$42.85K 2,940 at 14.57
1.3%
Not planned
14 Dec 2023
Dalvey David Director · indirect
Sold at will
$73.75K 5,000 at 14.75
2.1%
Not planned
13 Dec 2023
Dalvey David Director · indirect
Sold at will
$72.50K 5,000 at 14.50
2.1%
Not planned
12 Dec 2023
Dalvey David Director · indirect
Sold at will
$30.09K 2,060 at 14.61
0.9%
Not planned
8 Dec 2023
Dalvey David Director · indirect
Sold at will
$75.00K 5,000 at 15.00
2.0%
Not planned
7 Dec 2023
Dalvey David Director · indirect
Sold at will
$74.25K 5,000 at 14.85
2.0%
Not planned
25 Oct 2023
Buller Richard E Director
Sold on a plan
$3.58K 350 at 10.23
3.8%
Planned (10b5-1)
30 Aug 2023
Buller Richard E Director
Sold on a plan
$3.25K 350 at 9.28
3.7%
Planned (10b5-1)
23 Aug 2023
Buller Richard E Director
Sold at will
$2.95K 300 at 9.82
3.1%
Not planned
23 Jun 2023
Buller Richard E Director
Sold on a plan
$3.54K 300 at 11.79
3.0%
Planned (10b5-1)
23 May 2023
Buller Richard E Director
Sold at will
$832.50 75 at 11.10
0.7%
Not planned
22 May 2023
Furcht Leo Director
Bought
$103.19K 10,000 at 10.32
×40
First buy on file
22 May 2023
Buller Richard E Director
Sold at will
$1.05K 100 at 10.50
1.0%
Not planned
19 May 2023
Buller Richard E Director
Sold at will
$2.46K 250 at 9.85
2.4%
Not planned
21 Apr 2023
Buller Richard E Director
Sold on a plan
$2.91K 300 at 9.70
3.4%
Planned (10b5-1)
21 Feb 2023
Buller Richard E Director
Sold, plan not stated
$3.42K 300 at 11.40
3.3%
19 Dec 2022
Buller Richard E Director
Sold, plan not stated
$3.33K 300 at 11.11
3.2%
22 Nov 2022
Murphy Polly A. Director
Bought
$48.38K 5,000 at 9.68
opened
First buy on file
20 Oct 2022
Buller Richard E Director
Sold, plan not stated
$2.99K 300 at 9.97
3.1%
9 Sep 2022
NIGON RICHARD Director
Bought
$44.94K 5,000 at 8.99
5.5%
Largest buy in 3 yrs
30 Aug 2022
Buller Richard E Director
Sold, plan not stated
$1.00K 100 at 10.02
1.0%
26 Aug 2022
Buller Richard E Director
Sold, plan not stated
$1.49K 150 at 9.95
1.5%
25 Aug 2022
Buller Richard E Director
Sold, plan not stated
$2.01K 200 at 10.05
2.0%
19 Aug 2022
Buller Richard E Director
Sold, plan not stated
$2.68K 300 at 8.95
2.9%
24 Jun 2022
Buller Richard E Director
Sold, plan not stated
$2.84K 300 at 9.47
2.8%
25 May 2022
NIGON RICHARD Director
Bought
$4.48K 754 at 5.94
0.8%
First buy on file
23 May 2022
Buller Richard E Director
Sold, plan not stated
$4.68K 750 at 6.24
6.5%
19 May 2022
Buller Richard E Director
Sold, plan not stated
$1.41K 250 at 5.65
2.1%
20 Apr 2022
Buller Richard E Director
Sold, plan not stated
$2.20K 300 at 7.34
3.4%
22 Nov 2021
Buller Richard E Director
Sold, plan not stated
$3.89K 250 at 15.55
2.8%
19 Nov 2021
Buller Richard E Director
Sold, plan not stated
$4.04K 250 at 16.15
2.7%
11 Sep 2018
NIGON RICHARD Director
Bought
$217.46K 9,747 at 22.31
12.1%
First buy on file
31 May 2018
NIGON RICHARD Director
Bought
$190.40K 10,000 at 19.04
14.2%
First buy on file
28 Nov 2017
NIGON RICHARD Director
Bought
$131.10K 7,500 at 17.48
11.9%
First buy on file
Showing 1–50 of 52. Page 1 of 2 Older →