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 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
DORCHESTER MINERALS L P: DMLP
Price: 1/21/21 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
$12.79 $20.29 $8.52 $444 35 93 10.9% 0.3% 16.14% 0.18%
Exch Sector Industry Sub-Industry
NASD 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
1y
4
75%
16%
1
MORIYAMA LESLIE A
CFO
B
$18,346
1,680
---
12/29/20
---
$10.92
24,956
7.2
D
---
12/30/20 - 5:15:23 pm
2
    
 
LASSITER ALLEN D
DIR
JB
$17,491
1,476
---
12/10/20
---
$11.85
16,740
9.7
D
---
12/14/20 - 11:20:32 am
3
    
 
TROUT RONALD PAUL
DIR
JB
$17,491
1,476
---
12/10/20
---
$11.85
17,645
9.1
D
---
12/14/20 - 11:13:23 am
4
    
 
RUSSELL CHARLES WILLIAM
DIR
JB
$17,491
1,476
---
12/10/20
---
$11.85
12,740
13.1
D
---
12/14/20 - 11:12:31 am
5
    
 
DORCHESTER MINERALS OPERATING LP
O
JS
$300,291
25,341
---
12/10/20
---
$11.85
13,576
-65.1
D
---
12/14/20 - 11:10:21 am
6
    
 
TROUT RONALD PAUL
DIR
JB
$17,496
1,369
---
6/30/20
---
$12.78
16,169
9.3
D
---
7/1/20 - 6:06:43 pm
7
    
 
RUSSELL CHARLES WILLIAM
DIR
JB
$17,496
1,369
---
6/30/20
---
$12.78
11,264
13.8
D
---
7/1/20 - 6:04:03 pm
8
    
 
LASSITER ALLEN D
DIR
JB
$17,496
1,369
---
6/30/20
---
$12.78
15,264
9.9
D
---
7/1/20 - 6:01:17 pm
9
    
 
DORCHESTER MINERALS OPERATING LP
O
JS
$52,487
4,107
---
6/30/20
---
$12.78
38,917
-9.5
D
---
7/1/20 - 5:58:12 pm
10
1y
22
50%
2%
1
EHRMAN BRADLEY J
COO
B
$44,520
4,000
---
6/18/20
---
$11.13
61,808
6.9
I
---
6/18/20 - 5:32:14 pm
11
    
 
ROCHELLE MARTHA
DIR
JS
---
437,546
---
6/1/20
---
---
---
All
I
---
6/2/20 - 6:21:26 pm
12
    
 
ROCHELLE MARTHA
DIR
JB
---
120,314
---
6/1/20
---
---
184,488
187.5
I
---
6/2/20 - 6:21:26 pm
13
1y
25
40%
-10%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$153,252
15,000
---
4/20/20
$10.08
$10.25
43,024
53.5
D
10b
4/22/20 - 10:13:12 am
14
1y
3
100%
37%
1
MCMANEMIN WILLIAM CASEY
CEO,DIR
B
$13,770
1,333
---
3/12/20
---
$10.33
467,803
0.3
I
---
3/16/20 - 6:58:14 pm
15
1y
22
50%
2%
1
EHRMAN BRADLEY J
COO
B
$22,500
2,000
---
3/12/20
---
$11.25
57,808
3.6
I
---
3/13/20 - 10:45:24 am
16
1y
3
100%
37%
1
MCMANEMIN WILLIAM CASEY
CEO,DIR
B
$456,920
35,294
3/5/20
3/10/20
$11.37
$12.01
466,470
8.2
I
---
3/10/20 - 5:09:02 pm
17
    
 
MORIYAMA LESLIE A
CFO
JB
$19,781
1,560
---
3/10/20
---
$12.68
23,276
7.2
D
---
3/10/20 - 1:28:26 pm
18
9m
2
100%
-15%
1
ROCHELLE MARTHA
DIR
S
$468,517
34,344
3/4/20
3/5/20
$13.46
$13.68
---
All
I
---
3/9/20 - 7:29:42 pm
19
1y
41
51%
-3%
1
ALLEN H C JR
DIR
B
$53,838
4,000
---
3/5/20
$13.21
$13.23
30,600
15.0
I
---
3/9/20 - 3:36:19 pm
20
1y
41
51%
-3%
1
ALLEN H C JR
DIR
B
$80,520
5,450
3/3/20
3/4/20
---
$14.65
27,600
24.6
I
---
3/5/20 - 8:11:34 pm
21
9m
2
100%
-15%
1
ROCHELLE MARTHA
DIR
S
$443,366
30,000
3/3/20
3/4/20
---
$14.60
33,344
-47.4
I
---
3/5/20 - 6:34:56 pm
22
1y
8
63%
13%
1
VAUGHN ROBERT C
DIR
B
$188,772
12,790
---
3/4/20
---
$14.73
500,000
2.6
I
---
3/4/20 - 5:04:06 pm
23
1y
41
51%
-3%
1
ALLEN H C JR
DIR
B
$6,766
455
---
3/3/20
---
$14.86
30,608
1.5
D
---
3/5/20 - 8:11:34 pm
24
1y
22
50%
2%
1
EHRMAN BRADLEY J
COO
B
$33,422
2,210
---
3/3/20
$15.00
$15.16
55,808
4.1
I
---
3/3/20 - 6:14:55 pm
25
1y
25
40%
-10%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$39,707
2,500
2/21/20
2/24/20
$15.80
$15.92
28,024
9.8
D
10b
2/25/20 - 11:46:04 am
26
1y
25
40%
-10%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$112,929
7,000
2/19/20
2/20/20
---
$16.03
25,524
37.8
D
10b
2/21/20 - 10:32:40 am
27
1y
25
40%
-10%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$95,230
6,000
2/14/20
2/18/20
$15.77
$15.97
18,524
47.9
D
10b
2/19/20 - 10:56:27 am
28
    
 
TROUT RONALD PAUL
DIR
JB
$17,481
896
---
12/31/19
---
$19.51
14,800
6.4
D
---
1/3/20 - 2:46:13 pm
29
    
 
RUSSELL CHARLES WILLIAM
DIR
JB
$17,481
896
---
12/31/19
---
$19.51
9,895
10.0
D
---
1/3/20 - 2:45:15 pm
30
    
 
LASSITER ALLEN D
DIR
JB
$17,481
896
---
12/31/19
---
$19.51
13,895
6.9
D
---
1/3/20 - 2:43:57 pm
31
    
 
DORCHESTER MINERALS OPERATING LP
O
JS
$52,443
2,688
---
12/31/19
---
$19.51
12,524
-17.7
D
---
1/3/20 - 2:42:56 pm
32
    
 
EHRMAN BRADLEY J
COO
JS
$20,969
1,210
---
12/2/19
---
$17.33
18,982
-6.0
D
---
12/4/19 - 12:37:47 pm
33
    
 
EHRMAN BRADLEY J
COO
JB
$86,650
5,000
---
12/2/19
---
$17.33
20,192
32.9
D
---
12/4/19 - 12:37:47 pm
34
    
 
MORIYAMA LESLIE A
CFO
JS
$18,734
1,081
---
12/2/19
---
$17.33
21,716
-4.7
D
---
12/4/19 - 12:36:14 pm
35
    
 
MORIYAMA LESLIE A
CFO
JB
$77,985
4,500
---
12/2/19
---
$17.33
22,797
24.6
D
---
12/4/19 - 12:36:14 pm
36
    
 
DORCHESTER MINERALS OPERATING LP
O
JS
$612,321
35,333
---
12/2/19
---
$17.33
15,212
-69.9
D
---
12/4/19 - 11:27:32 am
37
1y
25
40%
-10%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$9,634
540
---
11/8/19
---
$17.84
50,545
1.1
D
10b
11/12/19 - 10:28:16 am
38
1y
25
40%
-10%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$185,823
10,400
10/28/19
10/29/19
$17.82
$17.86
50,005
26.3
D
10b
10/29/19 - 3:21:06 pm
39
1y
25
40%
-10%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$53,624
3,000
---
10/21/19
---
$17.87
39,605
8.2
D
10b
10/23/19 - 7:36:44 pm
40
1y
41
51%
-3%
1
ALLEN H C JR
DIR
B
$9,000
500
---
9/12/19
---
$18.00
6,970
7.7
I
---
9/12/19 - 9:04:36 pm
41
    
 
ALLEN H C JR
DIR
JB
$7,200
400
---
9/12/19
---
$18.00
42,250
1.0
I
---
9/12/19 - 9:04:36 pm
42
1y
41
51%
-3%
1
ALLEN H C JR
DIR
JB*
$49,402
2,720
9/10/19
9/11/19
$18.05
$18.10
41,850
7.0
I
---
9/12/19 - 9:04:36 pm
43
1y
25
40%
-10%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$38,513
2,190
---
8/16/19
---
$17.57
36,605
6.4
D
10b
8/19/19 - 3:30:04 pm
44
1y
22
50%
2%
1
EHRMAN BRADLEY J
COO
B
$53,970
3,000
---
8/15/19
---
$17.99
49,808
6.4
I
---
8/16/19 - 2:18:55 pm
45
1y
25
40%
-10%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$75,916
4,226
---
8/14/19
---
$17.96
34,415
14.0
D
10b
8/16/19 - 2:19:40 pm
46
1y
25
40%
-10%
1
DORCHESTER MINERALS OPERATING LP
O
AB
$183,945
10,000
8/12/19
8/13/19
$18.25
$18.49
30,189
49.5
D
10b
8/14/19 - 1:36:00 pm
47
1y
41
51%
-3%
1
ALLEN H C JR
DIR
B
$76,795
4,470
---
8/7/19
---
$17.18
4,470
New
I
---
8/9/19 - 5:08:25 pm
48
    
 
DORCHESTER MINERALS OPERATING LP
O
JS
$52,458
2,865
---
6/28/19
---
$18.31
20,189
-12.4
D
---
7/1/19 - 4:08:52 pm
49
    
 
LASSITER ALLEN D
DIR
JB
$17,486
955
---
6/28/19
---
$18.31
12,999
7.9
D
---
7/1/19 - 4:08:19 pm
50
    
 
RUSSELL CHARLES WILLIAM
DIR
JB
$17,486
955
---
6/28/19
---
$18.31
8,999
11.9
D
---
7/1/19 - 4:06:30 pm
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