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 JS
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Detailed Insider History for:
DORCHESTER MINERALS L P: DMLP
Price: 11/7/25 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$23.05 $34.88 $22.55 $1,112 48 120 12.0% 1.1% 25.60% 9.30%
Exch Sector Industry Sub-Industry
NasdaqGS Mining Oil And Gas Extraction Crude Petroleum & Natural Gas
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#
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
NANCE ALBERT G III
DIR
3
---
---
---
1/1/26
---
---
15,419
---
D
---
1/9/26 - 11:23:32 am
2
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$334,124
15,000
12/19/25
12/22/25
$22.23
$22.30
35,017
74.9
D
10b
12/23/25 - 11:13:59 am
3
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$445,216
20,000
12/17/25
12/18/25
$22.19
$22.28
20,017
117,647.1
D
10b
12/19/25 - 3:20:28 pm
4
    
 
MORIYAMA LESLIE A
CFO
JS
---
1,756
---
12/15/25
---
---
98,208
-1.8
D
---
12/17/25 - 5:28:14 pm
5
    
 
MORIYAMA LESLIE A
CFO
JB
---
4,351
---
12/15/25
---
---
99,964
4.6
D
---
12/17/25 - 5:28:14 pm
6
    
 
EHRMAN BRADLEY J
CEO
JS
---
1,719
---
12/15/25
---
---
32,718
-5.0
D
---
12/17/25 - 5:25:08 pm
7
    
 
EHRMAN BRADLEY J
CEO
JB
---
4,727
---
12/15/25
---
---
34,437
15.9
D
---
12/17/25 - 5:25:08 pm
8
    
 
MORIYAMA LESLIE A
CFO
JS
---
1,621
---
12/3/25
---
---
95,613
-1.7
D
---
12/5/25 - 4:49:57 pm
9
    
 
MORIYAMA LESLIE A
CFO
JB
---
4,017
---
12/3/25
---
---
97,234
4.3
D
---
12/5/25 - 4:49:57 pm
10
    
 
EHRMAN BRADLEY J
CEO
JS
---
1,749
---
12/3/25
---
---
29,710
-5.6
D
---
12/5/25 - 4:46:11 pm
11
    
 
EHRMAN BRADLEY J
CEO
JB
---
4,810
---
12/3/25
---
---
31,459
18.0
D
---
12/5/25 - 4:46:11 pm
12
3m
1
0%
-8%
1
BOX FRANK DAMON
DIR
B
$109,825
5,000
---
12/3/25
---
$21.96
9,000
125.0
D
---
12/3/25 - 5:38:34 pm
13
    
 
MORIYAMA LESLIE A
CFO
JS
$139,643
6,456
---
12/1/25
---
$21.63
93,217
-6.5
D
---
12/3/25 - 5:34:58 pm
14
    
 
MORIYAMA LESLIE A
CFO
JB
$346,080
16,000
---
12/1/25
---
$21.63
99,673
19.1
D
---
12/3/25 - 5:34:58 pm
15
    
 
EHRMAN BRADLEY J
CEO
JS
$141,525
6,543
---
12/1/25
---
$21.63
26,649
-19.7
D
---
12/3/25 - 5:33:15 pm
16
    
 
EHRMAN BRADLEY J
CEO
JB
$389,340
18,000
---
12/1/25
---
$21.63
33,192
118.5
D
---
12/3/25 - 5:33:15 pm
17
1y
9
56%
11%
1
VAUGHN ROBERT C
DIR
B
$4,165
195
---
11/28/25
---
$21.36
20,547
1.0
D
---
12/2/25 - 5:10:29 pm
18
    
 
DORCHESTER MINERALS OPERATING LP
O
JS
$1,272,810
58,000
---
11/28/25
---
$21.95
17
-100.0
D
---
12/2/25 - 5:08:39 pm
19
1y
31
52%
6%
1
EHRMAN BRADLEY J
CEO
B
$74,979
3,487
11/25/25
11/26/25
$21.26
$21.60
121,197
3.0
I
---
11/26/25 - 2:55:21 pm
20
1y
9
56%
11%
1
VAUGHN ROBERT C
DIR
B
$98,800
4,615
---
11/25/25
---
$21.39
20,352
29.3
D
---
11/28/25 - 9:08:09 am
21
1y
13
62%
14%
1
MORIYAMA LESLIE A
CFO
B
$65,382
3,041
---
11/25/25
---
$21.50
83,673
3.8
D
---
11/28/25 - 9:04:56 am
22
3m
1
0%
-8%
1
BOX FRANK DAMON
DIR
B
$102,276
4,000
---
9/5/25
---
$25.57
4,000
New
D
---
9/8/25 - 1:36:08 pm
23
    
 
WARINER SARAH N
DIR
3
---
---
---
5/14/25
---
---
---
---
D
---
5/29/25 - 6:31:37 pm
24
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$287,600
10,000
---
4/30/25
---
$28.76
58,017
20.8
D
10b
5/1/25 - 4:19:08 pm
25
1y
31
52%
6%
1
EHRMAN BRADLEY J
CEO
B
$100,009
3,356
---
3/3/25
---
$29.80
117,710
2.9
I
---
3/4/25 - 8:40:00 pm
26
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$10,405
335
---
2/6/25
---
$31.06
48,017
0.7
D
10b
2/7/25 - 6:00:48 pm
27
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$438,525
14,000
1/31/25
2/4/25
---
$30.90
47,682
41.6
D
10b
2/4/25 - 6:21:33 pm
28
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$31,662
954
---
12/30/24
---
$33.06
33,682
2.9
D
10b
12/30/24 - 6:59:54 pm
29
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$340,835
10,500
12/23/24
12/26/24
$32.20
$32.86
32,728
47.2
D
10b
12/26/24 - 8:10:20 pm
30
    
 
MORIYAMA LESLIE A
CFO
JS
---
1,626
---
12/13/24
---
---
80,632
-2.0
D
---
12/17/24 - 8:43:52 pm
31
    
 
MORIYAMA LESLIE A
CFO
JB
---
4,351
---
12/13/24
---
---
82,258
5.6
D
---
12/17/24 - 8:43:52 pm
32
    
 
EHRMAN BRADLEY J
CEO
JS
---
1,861
---
12/13/24
---
---
26,809
-6.5
D
---
12/17/24 - 8:43:06 pm
33
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$164,391
5,005
---
12/12/24
---
$32.84
22,228
29.1
D
10b
12/12/24 - 4:40:06 pm
34
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$560,910
16,995
---
12/11/24
$32.96
$33.01
17,223
7,453.9
D
10b
12/12/24 - 4:40:06 pm
35
    
 
MORIYAMA LESLIE A
CFO
JB
---
12,050
---
12/3/24
---
---
83,450
16.9
D
A
12/17/24 - 8:47:22 pm
36
    
 
EHRMAN BRADLEY J
CEO
JB
---
14,430
---
12/3/24
---
---
29,622
95.0
D
A
12/17/24 - 8:45:21 pm
37
    
 
EHRMAN BRADLEY J
CEO
JB
---
4,727
---
12/3/24
---
---
28,670
19.7
D
---
12/17/24 - 8:43:06 pm
38
    
 
MORIYAMA LESLIE A
CFO
JS
$190,735
5,543
---
12/3/24
---
$34.41
77,907
-6.6
D
---
12/5/24 - 6:29:26 pm
39
1y
13
62%
14%
1
MORIYAMA LESLIE A
CFO
B
$414,641
12,050
---
12/3/24
---
$34.41
83,450
16.9
D
---
12/5/24 - 6:29:26 pm
40
    
 
EHRMAN BRADLEY J
CEO
JS
$195,414
5,679
---
12/3/24
---
$34.41
23,943
-19.2
D
---
12/5/24 - 6:28:27 pm
41
1y
31
52%
6%
1
EHRMAN BRADLEY J
CEO
B
$496,536
14,430
---
12/3/24
---
$34.41
29,622
95.0
D
---
12/5/24 - 6:28:27 pm
42
    
 
DORCHESTER MINERALS OPERATING LP
O
JS
$2,275,327
66,124
---
12/3/24
---
$34.41
228
-99.7
D
---
12/5/24 - 6:27:27 pm
43
1y
13
62%
14%
1
MORIYAMA LESLIE A
CFO
B
$104,907
3,218
---
11/14/24
---
$32.60
71,400
4.7
D
---
11/15/24 - 4:59:52 pm
44
    
 
BOX FRANK DAMON
DIR
3
---
---
---
10/15/24
---
---
---
---
D
---
10/23/24 - 3:39:58 pm
45
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$93,460
2,900
---
7/19/24
$32.17
$32.20
66,352
4.6
D
10b
7/23/24 - 4:33:02 pm
46
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$158,005
4,878
7/16/24
7/17/24
$32.31
$32.50
63,452
8.3
D
10b
7/18/24 - 8:46:23 pm
47
1y
31
52%
6%
1
EHRMAN BRADLEY J
CEO
B
$82,600
2,800
---
6/17/24
---
$29.50
102,737
2.8
I
---
6/18/24 - 10:03:00 am
48
1y
55
49%
0%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$316,855
10,000
5/21/24
5/22/24
---
$31.22
58,574
20.6
D
10b
5/23/24 - 1:56:02 pm
49
1y
13
62%
14%
1
MORIYAMA LESLIE A
CFO
B
$77,138
2,430
---
5/17/24
---
$31.65
68,182
3.7
D
---
5/20/24 - 5:27:22 pm
50
    
 
MCMANEMIN WILLIAM CASEY
CB,DIR
JS
---
25,000
---
4/5/24
---
---
706,481
-3.4
D
---
4/11/24 - 6:05:34 pm
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