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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:
DAY ONE BIOPHARMACEUTICALS INC: DAWN
Price: 4/10/24 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
$14.41 $17.85 $9.67 $1,259 87 629 0.0% 17.4% 89.17% 19.70%
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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
    
 
BENDER JEREMY
CEO,DIR
JB
---
8,312
---
2/15/23
---
---
1,189,798
0.7
D
R
2/17/23 - 5:26:34 pm
2
    
 
BLACKMAN SAMUEL C
O
AS
$200,659
10,000
---
2/10/23
---
$20.07
1,241,710
-0.8
D
10b
2/13/23 - 6:28:48 pm
3
9m
5
100%
-37%
2
GRANT JULIE PAPANEK
DIR
AS
$530,794
25,000
---
2/1/23
$21.21
$21.69
355,000
-6.6
I
10b
2/3/23 - 4:48:52 pm
4
    
 
BENDER JEREMY
CEO,DIR
AS
$274,988
12,500
---
1/23/23
---
$22.00
1,181,486
-1.0
D
10b
1/24/23 - 5:11:10 pm
5
9m
6
100%
-38%
2
YORK CHARLES N II
COO,CFO,SEC
AS
$227,523
10,000
---
1/20/23
---
$22.75
268,810
-3.6
D
10b
1/23/23 - 6:00:00 pm
6
    
 
BLACKMAN SAMUEL C
O
AS
$228,644
10,000
---
1/10/23
$22.75
$23.20
1,250,148
-0.8
D
10b
1/11/23 - 5:09:31 pm
7
9m
5
100%
-37%
2
GRANT JULIE PAPANEK
DIR
AS
$516,147
25,000
---
1/3/23
$20.36
$21.31
380,000
-6.2
I
10b
1/4/23 - 5:51:49 pm
8
    
 
BENDER JEREMY
CEO,DIR
AS
$253,969
12,500
---
12/21/22
---
$20.32
1,192,424
-1.0
D
10b
12/22/22 - 5:50:00 pm
9
9m
6
100%
-38%
2
YORK CHARLES N II
COO,CFO,SEC
AS
$200,650
10,000
---
12/20/22
---
$20.07
276,497
-3.5
D
10b
12/22/22 - 5:43:13 pm
10
    
 
ATLAS VENTURE FUND XI L P
BO
JS
---
600,854
---
12/12/22
---
---
6,008,534
-9.1
D
10b
12/14/22 - 4:54:24 pm
11
9m
5
100%
-37%
2
GRANT JULIE PAPANEK
DIR
AS
$96,210
4,358
---
12/8/22
---
$22.08
405,000
-1.1
I
10b
12/12/22 - 4:56:46 pm
12
9m
5
100%
-37%
2
GRANT JULIE PAPANEK
DIR
AS
$216,480
10,000
12/1/22
12/2/22
---
$21.55
409,358
-2.4
I
10b
12/5/22 - 4:57:53 pm
13
    
 
BLACKMAN SAMUEL C
O
AS
$214,530
10,000
---
12/1/22
$21.38
$22.16
1,260,148
-0.8
D
10b
12/5/22 - 4:43:40 pm
14
9m
6
100%
-38%
2
YORK CHARLES N II
COO,CFO,SEC
AS
$207,570
10,000
---
11/21/22
$20.74
$21.39
286,497
-3.4
D
10b
11/22/22 - 6:46:06 pm
15
    
 
BENDER JEREMY
CEO,DIR
AS
$259,479
12,500
---
11/21/22
$20.74
$21.38
1,204,924
-1.0
D
10b
11/22/22 - 6:43:19 pm
16
9m
6
100%
-38%
2
YORK CHARLES N II
COO,CFO,SEC
S
$9,228
430
---
11/16/22
---
$21.46
296,497
-0.1
D
R
11/17/22 - 5:49:00 pm
17
    
 
BLACKMAN SAMUEL C
O
S
$8,090
377
---
11/16/22
---
$21.46
1,270,148
-0.0
D
R
11/17/22 - 5:41:39 pm
18
    
 
BENDER JEREMY
CEO,DIR
S
$32,469
1,513
---
11/16/22
---
$21.46
1,217,424
-0.1
D
R
11/17/22 - 5:33:43 pm
19
    
 
YORK CHARLES N II
COO,CFO,SEC
JB
---
1,375
---
11/15/22
---
---
295,776
0.5
D
R
11/17/22 - 5:49:00 pm
20
    
 
BLACKMAN SAMUEL C
O
JB
---
1,187
---
11/15/22
---
---
1,270,525
0.1
D
R
11/17/22 - 5:41:39 pm
21
    
 
BENDER JEREMY
CEO,DIR
JB
---
3,562
---
11/15/22
---
---
1,218,937
0.3
D
R
11/17/22 - 5:33:43 pm
22
9m
5
100%
-37%
2
GRANT JULIE PAPANEK
DIR
AS
$200,278
10,000
11/1/22
11/2/22
---
$20.01
419,358
-2.3
I
10b
11/3/22 - 5:44:23 pm
23
9m
6
100%
-38%
2
YORK CHARLES N II
COO,CFO,SEC
AS
$200,313
10,000
---
11/1/22
---
$20.03
294,401
-3.3
D
10b
11/3/22 - 5:49:43 pm
24
    
 
BLACKMAN SAMUEL C
O
AS
$200,050
10,000
---
11/1/22
---
$20.00
1,269,338
-0.8
D
10b
11/3/22 - 5:36:29 pm
25
    
 
BENDER JEREMY
CEO,DIR
AS
$250,355
12,500
---
11/1/22
---
$20.03
1,215,375
-1.0
D
10b
11/3/22 - 5:30:09 pm
26
9m
5
100%
-37%
2
GRANT JULIE PAPANEK
DIR
AS
$200,315
10,000
10/3/22
10/4/22
---
$20.00
429,358
-2.3
I
10b
10/5/22 - 4:32:00 pm
27
9m
6
100%
-38%
2
YORK CHARLES N II
COO,CFO,SEC
AS
$200,473
10,000
---
10/3/22
---
$20.05
304,401
-3.2
D
10b
10/5/22 - 4:36:13 pm
28
    
 
BLACKMAN SAMUEL C
O
AS
$199,852
10,000
---
10/3/22
---
$19.99
1,279,338
-0.8
D
10b
10/5/22 - 4:25:08 pm
29
    
 
BENDER JEREMY
CEO,DIR
AS
$250,646
12,500
---
10/3/22
---
$20.05
1,227,875
-1.0
D
10b
10/5/22 - 4:22:03 pm
30
    
 
CANAAN XI L P
BO
S
$11,380,779
613,603
---
9/21/22
$18.54
$19.29
8,464,301
-6.8
D
---
9/22/22 - 4:00:15 pm
31
    
 
CANAAN XI L P
BO
JS
---
1,500,000
---
9/21/22
---
---
6,964,301
-17.7
D
---
9/22/22 - 4:00:15 pm
32
9m
5
100%
-37%
2
GRANT JULIE PAPANEK
DIR
S
$11,380,779
613,603
---
9/21/22
$18.54
$19.29
8,464,301
-6.8
I
---
9/22/22 - 4:00:12 pm
33
    
 
GRANT JULIE PAPANEK
DIR
JS
---
1,500,000
---
9/21/22
---
---
6,964,301
-17.7
I
---
9/22/22 - 4:00:12 pm
34
9m
5
100%
-37%
2
GRANT JULIE PAPANEK
DIR
S
$6,963,116
340,702
9/16/22
9/20/22
$19.50
$20.10
9,077,904
-3.6
I
---
9/20/22 - 6:05:36 pm
35
    
 
CANAAN XI L P
BO
S
$2,936,911
150,126
9/16/22
9/20/22
---
$19.50
9,080,170
-1.6
D
---
9/20/22 - 5:47:24 pm
36
    
 
ATLAS VENTURE FUND XI L P
BO
JS
---
600,854
---
9/19/22
---
---
6,609,388
-8.3
D
10b
9/21/22 - 4:58:52 pm
37
9m
5
100%
-37%
2
GRANT JULIE PAPANEK
DIR
S
$5,823,084
245,039
9/13/22
9/15/22
$22.79
$23.73
9,418,606
-2.5
I
---
9/15/22 - 7:53:20 pm
38
    
 
CANAAN XI L P
BO
S
$5,823,084
245,039
9/13/22
9/15/22
$22.79
$23.73
9,418,606
-2.5
D
---
9/15/22 - 7:48:20 pm
39
    
 
NICHOLSON GARRY A
DIR
3
---
---
---
9/12/22
---
---
---
---
D
---
9/14/22 - 7:32:24 pm
40
9m
5
100%
-37%
2
GRANT PAPANEK JULIE
DIR
AS
$119,108
5,000
---
9/2/22
---
$23.82
439,358
-1.1
I
10b
9/15/22 - 1:21:28 pm
41
9m
6
100%
-38%
2
YORK CHARLES N II
COO,CFO,SEC
AS
$232,484
10,000
---
9/1/22
$23.16
$23.80
314,401
-3.1
D
10b
9/6/22 - 7:54:16 pm
42
9m
5
100%
-37%
2
GRANT PAPANEK JULIE
DIR
AS
$116,358
5,000
---
9/1/22
$23.21
$23.80
444,358
-1.1
I
10b
9/6/22 - 7:52:24 pm
43
    
 
BLACKMAN SAMUEL C
O
AS
$232,452
10,000
---
9/1/22
$23.14
$23.79
1,289,338
-0.8
D
10b
9/6/22 - 7:51:07 pm
44
    
 
BENDER JEREMY
CEO,DIR
AS
$290,581
12,500
---
9/1/22
$23.15
$23.79
1,240,375
-1.0
D
10b
9/6/22 - 7:50:21 pm
45
    
 
BENDER JEREMY
CEO,DIR
AS
$290,581
12,500
---
9/1/22
$23.15
$23.79
1,240,375
-1.0
D
10b
9/6/22 - 7:49:33 pm
46
    
 
BLACKMAN SAMUEL C
O
S
$22,876
941
---
8/16/22
---
$24.31
1,299,338
-0.1
D
R
8/17/22 - 7:25:53 pm
47
    
 
BENDER JEREMY
CEO,DIR
S
$97,313
4,003
---
8/16/22
---
$24.31
1,252,875
-0.3
D
R
8/17/22 - 7:24:53 pm
48
9m
6
100%
-38%
2
YORK CHARLES N II
COO,CFO,SEC
S
$26,474
1,089
---
8/16/22
---
$24.31
324,401
-0.3
D
R
8/17/22 - 7:23:59 pm
49
    
 
BLACKMAN SAMUEL C
O
JB
---
3,561
---
8/15/22
---
---
1,300,279
0.3
D
R
8/17/22 - 7:25:53 pm
50
    
 
BENDER JEREMY
CEO,DIR
JB
---
10,686
---
8/15/22
---
---
1,256,878
0.9
D
R
8/17/22 - 7:24:53 pm
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