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 S  AS  JS*  OS  OS*  3
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 JS
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Detailed Insider History for:
DAY ONE BIOPHARMACEUTICALS INC: DAWN
Price: 10/31/25 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
$7.44 $16.76 $5.64 $762 102 1,548 0.0% 14.5% 86.12% 16.94%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Chemicals And Allied Products Pharmaceutical Preparations
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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
21
86%
-32%
2
YORK CHARLES N II
COO,CFO
S
$27,786
4,106
---
8/18/25
---
$6.77
278,000
-1.5
D
R
8/19/25 - 7:40:12 pm
2
1y
4
75%
-30%
2
DUBOW ADAM
GC,SEC
S
$29,538
4,365
---
8/18/25
---
$6.77
54,858
-7.4
D
R
8/19/25 - 7:38:03 pm
3
    
 
BENDER JEREMY
CEO,DIR
S
$108,666
16,058
---
8/18/25
---
$6.77
161,365
-9.1
D
R
8/19/25 - 7:37:00 pm
4
    
 
MERENDINO LAUREN
O
S
$25,485
3,766
---
8/18/25
---
$6.77
41,931
-8.2
D
R
8/19/25 - 7:36:13 pm
5
    
 
YORK CHARLES N II
COO,CFO
JB
---
16,875
---
8/15/25
---
---
282,106
6.4
D
R
8/19/25 - 7:40:12 pm
6
    
 
DUBOW ADAM
GC,SEC
JB
---
12,087
---
8/15/25
---
---
59,223
25.6
D
R
8/19/25 - 7:38:03 pm
7
    
 
BENDER JEREMY
CEO,DIR
JB
---
31,686
---
8/15/25
---
---
177,423
21.7
D
R
8/19/25 - 7:37:00 pm
8
    
 
MERENDINO LAUREN
O
JB
---
10,536
---
8/15/25
---
---
45,697
30.0
D
R
8/19/25 - 7:36:13 pm
9
    
 
BENDER JEREMY
CEO,DIR
JS
---
601,259
---
7/10/25
---
---
14,450
-97.7
I
---
7/14/25 - 4:18:48 pm
10
    
 
BENDER JEREMY
CEO,DIR
JB
---
601,259
7/2/24
7/10/25
---
---
1,408,285
74.5
I
---
7/14/25 - 4:18:48 pm
11
    
 
VASCONCELLES MICHAEL
O
3
---
---
---
6/16/25
---
---
---
---
---
---
6/18/25 - 7:41:26 pm
12
    
 
MERENDINO LAUREN
O
S
$24,575
3,927
---
5/16/25
---
$6.26
35,161
-10.0
D
R
5/19/25 - 5:54:37 pm
13
1y
4
75%
-30%
2
DUBOW ADAM
GC
S
$28,486
4,552
---
5/16/25
---
$6.26
47,136
-8.8
D
R
5/19/25 - 5:48:04 pm
14
1y
21
86%
-32%
2
YORK CHARLES N II
COO,CFO,SEC
S
$26,796
4,282
---
5/16/25
---
$6.26
265,231
-1.6
D
R
5/19/25 - 5:45:58 pm
15
    
 
BENDER JEREMY
CEO,DIR
S
$87,385
13,964
---
5/16/25
---
$6.26
145,737
-8.7
D
R
5/19/25 - 5:44:25 pm
16
    
 
MERENDINO LAUREN
O
JB
---
10,536
---
5/15/25
---
---
39,088
36.9
D
R
5/19/25 - 5:54:37 pm
17
    
 
DUBOW ADAM
GC
JB
---
12,086
---
5/15/25
---
---
51,688
30.5
D
R
5/19/25 - 5:48:04 pm
18
    
 
YORK CHARLES N II
COO,CFO,SEC
JB
---
16,875
---
5/15/25
---
---
269,513
6.7
D
R
5/19/25 - 5:45:58 pm
19
    
 
BENDER JEREMY
CEO,DIR
JB
---
31,686
---
5/15/25
---
---
159,701
24.8
D
R
5/19/25 - 5:44:25 pm
20
    
 
MERENDINO LAUREN
O
3
---
---
---
2/26/25
---
---
28,552
---
D
R
2/28/25 - 7:50:59 pm
21
1y
21
86%
-32%
2
YORK CHARLES N II
COO,CFO,SEC
S
$52,278
4,370
---
2/18/25
---
$11.96
252,638
-1.7
D
R
2/21/25 - 6:10:03 pm
22
1y
4
75%
-30%
2
DUBOW ADAM
GC
S
$55,580
4,646
---
2/18/25
---
$11.96
39,602
-10.5
D
R
2/21/25 - 6:08:31 pm
23
    
 
BENDER JEREMY
CEO,DIR
S
$144,130
12,048
---
2/18/25
---
$11.96
128,015
-8.6
D
R
2/21/25 - 6:05:43 pm
24
    
 
YORK CHARLES N II
COO,CFO,SEC
JB
---
16,875
---
2/15/25
---
---
257,008
7.0
D
R
2/21/25 - 6:10:03 pm
25
    
 
DUBOW ADAM
GC
JB
---
12,086
---
2/15/25
---
---
44,248
37.6
D
R
2/21/25 - 6:08:31 pm
26
    
 
BENDER JEREMY
CEO,DIR
JB
---
31,686
---
2/15/25
---
---
140,063
29.2
D
R
2/21/25 - 6:05:43 pm
27
    
 
BLACKMAN SAMUEL C
O
AS
$399,339
30,000
---
12/10/24
---
$13.31
1,034,015
-2.8
D
10b
12/12/24 - 4:06:23 pm
28
    
 
BENDER JEREMY
CEO,DIR
S
$139,420
10,554
---
11/18/24
---
$13.21
108,377
-8.9
D
R
11/19/24 - 4:36:19 pm
29
    
 
BLACKMAN SAMUEL C
O
S
$29,142
2,206
---
11/18/24
---
$13.21
1,064,015
-0.2
D
R
11/19/24 - 4:34:06 pm
30
1y
4
75%
-30%
2
DUBOW ADAM
GC
S
$41,810
3,165
---
11/18/24
---
$13.21
32,162
-9.0
D
R
11/19/24 - 4:32:07 pm
31
1y
21
86%
-32%
2
YORK CHARLES N II
COO,CFO,SEC
S
$34,373
2,602
---
11/18/24
---
$13.21
240,133
-1.1
D
R
11/19/24 - 4:30:20 pm
32
    
 
BENDER JEREMY
CEO,DIR
JB
---
19,999
---
11/15/24
---
---
118,931
20.2
D
R
11/19/24 - 4:36:19 pm
33
    
 
BLACKMAN SAMUEL C
O
JB
---
8,686
---
11/15/24
---
---
1,066,221
0.8
D
R
11/19/24 - 4:34:06 pm
34
    
 
DUBOW ADAM
GC
JB
---
8,399
---
11/15/24
---
---
35,327
31.2
D
R
11/19/24 - 4:32:07 pm
35
    
 
YORK CHARLES N II
COO,CFO,SEC
JB
---
10,250
---
11/15/24
---
---
242,735
4.4
D
R
11/19/24 - 4:30:20 pm
36
    
 
BLACKMAN SAMUEL C
O
AS
$456,223
28,255
11/8/24
11/11/24
---
$16.10
1,057,535
-2.6
D
10b
11/12/24 - 4:57:54 pm
37
    
 
BLACKMAN SAMUEL C
O
AS
$180,287
11,245
---
11/7/24
---
$16.03
1,085,790
-1.0
D
10b
11/8/24 - 4:15:34 pm
38
    
 
BLACKMAN SAMUEL C
O
AS
$8,010
500
---
10/31/24
---
$16.02
1,097,035
-0.0
D
10b
11/4/24 - 5:24:13 pm
39
    
 
BLACKMAN SAMUEL C
O
AS
$426,675
30,000
---
9/10/24
---
$14.22
1,097,535
-2.7
D
10b
9/12/24 - 4:48:58 pm
40
1y
4
75%
-30%
2
DUBOW ADAM
GC
S
$44,825
3,202
---
8/16/24
---
$14.00
26,928
-10.6
D
R
8/19/24 - 6:12:44 pm
41
1y
21
86%
-32%
2
YORK CHARLES N II
COO,CFO,SEC
S
$36,860
2,633
---
8/16/24
---
$14.00
232,485
-1.1
D
R
8/19/24 - 6:07:06 pm
42
    
 
BLACKMAN SAMUEL C
O
S
$31,246
2,232
---
8/16/24
---
$14.00
1,127,535
-0.2
D
R
8/19/24 - 5:59:16 pm
43
    
 
BENDER JEREMY
CEO,DIR
S
$149,524
10,681
---
8/16/24
---
$14.00
98,932
-9.7
D
R
8/19/24 - 5:53:37 pm
44
    
 
DUBOW ADAM
GC
JB
---
8,399
---
8/15/24
---
---
30,130
38.6
D
R
8/19/24 - 6:12:44 pm
45
    
 
YORK CHARLES N II
COO,CFO,SEC
JB
---
10,250
---
8/15/24
---
---
235,118
4.6
D
R
8/19/24 - 6:07:06 pm
46
    
 
BLACKMAN SAMUEL C
O
JB
---
8,686
---
8/15/24
---
---
1,129,767
0.8
D
R
8/19/24 - 5:59:16 pm
47
    
 
BENDER JEREMY
CEO,DIR
JB
---
19,999
---
8/15/24
---
---
109,613
22.3
D
R
8/19/24 - 5:53:37 pm
48
    
 
BLACKMAN SAMUEL C
O
AS
$320,226
20,000
---
7/16/24
---
$16.01
1,121,081
-1.8
D
10b
7/17/24 - 4:53:40 pm
49
    
 
BENDER JEREMY
CEO,DIR
JS
---
241,912
---
7/2/24
---
---
162,762
-59.8
I
---
7/5/24 - 6:11:11 pm
50
    
 
BENDER JEREMY
CEO,DIR
JB
---
241,912
---
7/2/24
---
---
807,026
42.8
I
---
7/5/24 - 6:11:11 pm
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