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 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
ATARA BIOTHERAPEUTICS INC: ATRA

Price: 3/1/24 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
$0.77 $3.61 $0.20 $79 102 3,605 0.0% 10.9% 67.59% 5.62%
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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
    
 
PR,CEO,DIR
JB
---
1,280,000
---
1/8/24
---
---
1,935,496
195.3
D
R
1/9/24 - 4:41:09 pm
2
    
 
VP,CTO
JB
---
675,000
---
1/8/24
---
---
952,143
243.6
D
R
1/9/24 - 4:40:54 pm
3
    
 
VP,LO
JB
---
475,000
---
1/8/24
---
---
737,565
180.9
D
R
1/9/24 - 4:40:34 pm
4
    
 
VP,CFO
JB
---
475,000
---
1/8/24
---
---
680,998
230.6
D
R
1/9/24 - 4:40:31 pm
5
    
 
VP
JB
---
450,000
---
1/8/24
---
---
558,880
413.3
D
R
1/9/24 - 4:40:06 pm
6
    
 
PR,CEO,DIR
S
$7,939
20,409
---
11/16/23
---
$0.39
655,496
-3.0
D
R
11/20/23 - 5:31:30 pm
7
    
 
VP,CTO
S
$3,445
8,856
---
11/16/23
---
$0.39
277,143
-3.1
D
R
11/20/23 - 5:31:08 pm
8
    
 
VP,LO
S
$3,231
8,307
---
11/16/23
---
$0.39
257,084
-3.1
D
R
11/20/23 - 5:30:36 pm
9
    
 
VP
S
$4,780
12,287
---
11/16/23
---
$0.39
171,284
-6.7
D
R
11/20/23 - 5:30:19 pm
10
    
 
VP,CFO
S
$4,652
11,958
---
11/16/23
---
$0.39
205,998
-5.5
D
R
11/20/23 - 5:29:48 pm
11
    
 
VP
S
$1,271
3,267
---
11/16/23
---
$0.39
104,424
-3.0
D
R
11/20/23 - 5:29:23 pm
12
1y
2
50%
31%
DIR
B
$68,214
270,000
11/13/23
11/14/23
$0.22
$0.31
459,418
142.5
D
---
11/15/23 - 5:07:08 pm
13
    
 
DIR
B
$25,330
100,000
---
11/10/23
---
$0.25
209,000
91.7
D
---
11/14/23 - 6:29:04 pm
14
1y
3
33%
-8%
DIR
B
$101,340
446,825
---
11/10/23
---
$0.23
563,325
383.5
D
---
11/14/23 - 6:27:14 pm
15
    
 
VP,CFO
JS*
$13,527
8,186
---
8/16/23
---
$1.65
217,956
-3.6
D
R
8/18/23 - 6:25:27 pm
16
    
 
VP,LO
JS*
$14,330
8,672
---
8/16/23
---
$1.65
265,391
-3.2
D
R
8/18/23 - 6:25:23 pm
17
    
 
PR,CEO,DIR
JS*
$50,835
30,766
---
8/16/23
---
$1.65
675,905
-4.4
D
R
8/18/23 - 6:25:18 pm
18
    
 
VP,CTO
JS*
$24,997
15,126
---
8/16/23
---
$1.65
285,999
-5.0
D
R
8/18/23 - 6:25:14 pm
19
    
 
VP
JS*
$11,526
6,975
---
8/16/23
---
$1.65
183,571
-3.7
D
R
8/18/23 - 6:25:09 pm
20
    
 
VP
JS*
$5,532
3,346
---
8/16/23
---
$1.65
107,691
-3.0
D
R
8/18/23 - 6:25:04 pm
21
    
 
PR,CEO,DIR
S
$23,723
14,291
---
6/27/23
---
$1.66
706,671
-2.0
D
R
6/29/23 - 4:15:42 pm
22
    
 
VP
3
---
---
---
6/1/23
---
---
111,037
---
D
R
6/9/23 - 4:30:47 pm
23
    
 
VP,CTO
3
---
---
---
6/1/23
---
---
301,125
---
D
R
6/9/23 - 4:30:46 pm
24
    
 
VP
3
---
---
---
6/1/23
---
---
190,546
---
D
R
6/9/23 - 4:30:36 pm
25
    
 
DIR
JB
---
57,000
---
5/31/23
---
---
115,689
97.1
D
R
6/2/23 - 8:06:15 pm
26
    
 
DIR
JB
---
57,000
---
5/31/23
---
---
88,500
181.0
D
R
6/2/23 - 7:09:14 pm
27
    
 
DIR
JB
---
57,000
---
5/31/23
---
---
189,418
43.0
D
R
6/2/23 - 7:09:11 pm
28
    
 
DIR
JB
---
57,000
---
5/31/23
---
---
109,000
109.6
D
R
6/2/23 - 7:09:08 pm
29
    
 
DIR
JB
---
57,000
---
5/31/23
---
---
77,500
278.0
D
R
6/2/23 - 7:09:04 pm
30
    
 
DIR
JB
---
57,000
---
5/31/23
---
---
116,500
95.8
D
R
6/2/23 - 7:09:01 pm
31
    
 
DIR
JB
---
57,000
---
5/31/23
---
---
109,000
109.6
D
R
6/2/23 - 7:08:58 pm
32
    
 
VP,LO
S
$17,089
8,389
---
5/16/23
---
$2.04
270,945
-3.0
D
R
5/18/23 - 8:17:23 pm
33
    
 
VP,CTO
S
$38,784
19,040
---
5/16/23
---
$2.04
276,010
-6.5
D
R
5/18/23 - 8:17:21 pm
34
    
 
PR,CEO,DIR
S
$60,633
29,766
---
5/16/23
---
$2.04
720,962
-4.0
D
R
5/18/23 - 8:17:21 pm
35
    
 
VP,CFO
S
$16,131
7,918
---
5/16/23
---
$2.04
226,142
-3.4
D
R
5/18/23 - 8:17:16 pm
36
    
 
VP,CFO
3
---
---
---
4/1/23
---
---
234,060
---
D
R
4/7/23 - 4:45:25 pm
37
    
 
PR,CEO,DIR
AS
$56,868
15,679
---
3/2/23
---
$3.63
750,728
-2.0
D
10b
3/6/23 - 6:49:35 pm
38
    
 
VP,GC,SEC
AS
$15,310
4,221
---
3/2/23
---
$3.63
279,334
-1.5
D
10b
3/6/23 - 6:48:31 pm
39
1y
17
76%
-29%
CFO
AS
$24,921
6,871
---
3/2/23
---
$3.63
181,978
-3.6
D
10b
3/6/23 - 6:47:31 pm
40
1y
9
100%
-69%
VP
AS
$18,403
5,074
---
3/2/23
---
$3.63
290,794
-1.7
D
10b
3/6/23 - 6:46:39 pm
41
    
 
PR,CEO,DIR
JB
---
324,711
---
3/1/23
---
---
766,407
73.5
D
R
3/3/23 - 5:16:12 pm
42
    
 
VP,CTO
JB
---
139,700
---
3/1/23
---
---
295,050
89.9
D
R
3/3/23 - 5:16:01 pm
43
    
 
VP
JB
---
141,328
---
3/1/23
---
---
295,868
91.5
D
R
3/3/23 - 5:15:58 pm
44
    
 
VP,GC,SEC
JB
---
155,375
---
3/1/23
---
---
283,555
121.2
D
R
3/3/23 - 5:15:34 pm
45
1y
17
76%
-29%
CFO
AS
$13,568
2,485
---
2/7/23
---
$5.46
188,849
-1.3
D
10b
2/9/23 - 5:00:12 pm
46
    
 
VP,CTO
3
---
---
---
12/14/22
---
---
155,350
---
D
R
12/16/22 - 5:43:11 pm
47
1y
9
100%
-69%
VP
AS
$19,497
4,342
---
11/16/22
---
$4.49
154,540
-2.7
D
10b
11/18/22 - 8:13:49 pm
48
    
 
PR,CEO,DIR
AS
$70,004
15,591
---
11/16/22
---
$4.49
441,696
-3.4
D
10b
11/18/22 - 8:13:47 pm
49
    
 
VP,GC,SEC
AS
$16,218
3,612
---
11/16/22
---
$4.49
127,586
-2.8
D
10b
11/18/22 - 8:13:39 pm
50
1y
17
76%
-29%
CFO
AS
$28,086
6,255
---
11/16/22
---
$4.49
191,334
-3.2
D
10b
11/18/22 - 8:13:28 pm
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