Insider trading

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

30 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.

30 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.

30 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.

30 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.
30 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
30 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.

30 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
23 Jul 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$45.06K 4,304 at 10.47
100%
Sold half or more
22 Jul 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$55.17K 5,000 at 11.03
53.7%
Sold half or more
21 Jul 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$37.41K 3,196 at 11.70
25.6%
Planned (10b5-1)
18 Jun 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$27.41K 2,500 at 10.96
100%
Sold half or more
17 Jun 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$55.44K 5,000 at 11.09
66.7%
Sold half or more
16 Jun 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$55.86K 5,000 at 11.17
40.0%
Planned (10b5-1)
15 Jun 2026
Vanderhook Timothy CEO and Chairman
Sold at will
$101.29K 9,125 at 11.10
4.2%
Not planned
21 May 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$26.97K 2,500 at 10.79
100%
Sold half or more
20 May 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$52.98K 5,000 at 10.60
66.7%
Sold half or more
19 May 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$54.44K 5,000 at 10.89
40.0%
Planned (10b5-1)
22 Apr 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$30.04K 2,796 at 10.74
100%
Sold half or more
21 Apr 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$51.34K 4,704 at 10.91
62.7%
Sold half or more
20 Apr 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$55.60K 5,000 at 11.12
40.0%
Planned (10b5-1)
19 Mar 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$33.35K 2,920 at 11.42
100%
Sold half or more
18 Mar 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$59.99K 5,000 at 12.00
63.1%
Sold half or more
17 Mar 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$58.98K 5,000 at 11.80
38.7%
Planned (10b5-1)
19 Feb 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$30.07K 3,279 at 9.17
88.6%
Sold half or more
18 Feb 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$43.37K 4,722 at 9.19
56.1%
Sold half or more
17 Feb 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$37.79K 4,079 at 9.26
32.6%
Planned (10b5-1)
22 Jan 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$33.13K 2,574 at 12.87
100%
Sold half or more
21 Jan 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$60.30K 4,926 at 12.24
65.7%
Sold half or more
20 Jan 2026
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$59.70K 5,000 at 11.94
40.0%
Planned (10b5-1)
19 Dec 2025
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$29.48K 2,500 at 11.79
100%
Sold half or more
18 Dec 2025
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$59.64K 5,000 at 11.93
66.7%
Sold half or more
17 Dec 2025
Vanderhook Timothy CEO and Chairman
Sold on a plan
$106.53K 9,102 at 11.70
2.6%
Planned (10b5-1)
17 Dec 2025
Vanderhook Timothy CEO and Chairman · indirect
Sold on a plan
$58.68K 5,000 at 11.74
40.0%
Planned (10b5-1)
15 Sep 2025
Vanderhook Timothy CEO and Chairman
Sold at will
$85.43K 8,782 at 9.73
2.4%
Not planned
13 Jun 2025
Vanderhook Timothy CEO and Chairman
Sold at will
$117.18K 8,960 at 13.08
2.4%
Not planned
10 Feb 2021
Vanderhook Timothy CEO and Chairman · indirect
Sold, plan not stated
$7.59M 303,411 at 25.00
100%
Sold half or more
10 Feb 2021
Vanderhook Timothy CEO and Chairman
Sold, plan not stated
$6.27M 250,625 at 25.00
100%
Sold half or more
Showing 1–30 of 30.