Insider trading

Period: 12 months Type of trade: Bought × Plan: Scheduled (10b5-1) × Share of holding: 50% or more × + 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.

12 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.

12 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.

12 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.

12 decisions over 12 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.
12 decisions over 12 months Remove this filter
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
12 decisions over 12 months Remove this filter
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.

12 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
1 Oct 2026
Dai Kun Chief Executive Officer · indirect
Bought on a plan
$12.79K 9,000 at 1.42
56.7%
Bought on a plan
30 Sep 2026
Dai Kun Chief Executive Officer · indirect
Bought on a plan
$9.95K 7,443 at 1.34
88.2%
Bought on a plan
18 Aug 2026
Ritchie Taylor Chief Financial Officer
Bought on a plan
$24.30K 1,500 at 16.20
52.6%
Bought on a plan
12 May 2026
Weir Daniel F Director
Bought on a plan
$313.11K 21,000 at 14.91
69.9%
Bought on a plan
7 May 2026
Bought on a plan
$745.69K 3,619 at 206.05
249%
Bought on a plan
4 Mar 2026
ROTHBLATT MARTINE A Chairperson & CEO
Bought on a plan
$1.39M 9,500 at 146.03
×73
Bought on a plan
5 Jan 2026
Ryan Barbara Director
Bought on a plan
$27.43K 775 at 35.39
65.2%
Bought on a plan
18 Dec 2025
DORCHESTER MINERALS OPERATING LP Entity Under Common Control
Bought on a plan
$350.42K 15,729 at 22.28
367%
Bought on a plan
17 Dec 2025
Bought on a plan
$1.01M 90,661 at 11.14
373%
Bought on a plan
17 Dec 2025
DORCHESTER MINERALS OPERATING LP Entity Under Common Control
Bought on a plan
$94.79K 4,271 at 22.19
×251
Bought on a plan
17 Dec 2025
LARSON KEITH R Director · indirect
Bought on a plan
$50.06K 715 at 70.02
106%
Bought on a plan
26 Nov 2025
Gray John Allen Managing Director
Bought on a plan
$204.90K 15,000 at 13.66
71.1%
Bought on a plan
Showing 1–12 of 12.