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 JS
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Detailed Insider History for:
DAY ONE BIOPHARMACEUTICALS INC: DAWN
Price: 3/6/26 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
$21.20 $21.23 $5.64 $2,190 103 3,979 0.0% 14.8% 79.55% 16.87%
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
    
 
MERENDINO LAUREN
O
S
$67,448
5,814
---
2/17/26
---
$11.60
60,157
-8.8
D
R
2/18/26 - 5:18:49 pm
2
1y
6
83%
-27%
2
DUBOW ADAM
GC,SEC
S
$74,188
6,395
---
2/17/26
---
$11.60
72,694
-8.1
D
R
2/18/26 - 5:17:40 pm
3
1y
23
87%
-31%
2
YORK CHARLES N II
COO,CFO
S
$70,359
6,065
---
2/17/26
---
$11.60
312,025
-1.9
D
R
2/18/26 - 5:16:10 pm
4
    
 
BENDER JEREMY
CEO,DIR
S
$179,338
15,459
---
2/17/26
---
$11.60
204,603
-7.0
D
R
2/18/26 - 5:14:55 pm
5
    
 
VASCONCELLES MICHAEL
O
S
$31,647
2,728
---
2/17/26
---
$11.60
4,397
-38.3
D
R
2/18/26 - 5:13:17 pm
6
    
 
MERENDINO LAUREN
O
JB
---
15,162
---
2/15/26
---
---
65,971
29.8
D
R
2/18/26 - 5:18:49 pm
7
    
 
DUBOW ADAM
GC,SEC
JB
---
16,463
---
2/15/26
---
---
79,089
26.3
D
R
2/18/26 - 5:17:40 pm
8
    
 
YORK CHARLES N II
COO,CFO
JB
---
23,375
---
2/15/26
---
---
318,090
7.9
D
R
2/18/26 - 5:16:10 pm
9
    
 
BENDER JEREMY
CEO,DIR
JB
---
42,937
---
2/15/26
---
---
220,102
24.2
D
R
2/18/26 - 5:14:55 pm
10
    
 
VASCONCELLES MICHAEL
O
JB
---
7,125
---
2/15/26
---
---
7,125
New
D
R
2/18/26 - 5:13:17 pm
11
    
 
BENDER JEREMY
CEO,DIR
JS
---
614,450
---
11/25/25
---
---
---
All
I
---
11/26/25 - 4:10:24 pm
12
    
 
BENDER JEREMY
CEO,DIR
JB
---
600,000
---
11/25/25
---
---
300,000
---
I
---
11/26/25 - 4:10:24 pm
13
1y
6
83%
-27%
2
DUBOW ADAM
GC,SEC
S
$38,503
4,319
---
11/17/25
---
$8.91
62,626
-6.5
D
R
11/18/25 - 7:04:11 pm
14
1y
23
87%
-31%
2
YORK CHARLES N II
COO,CFO
S
$36,212
4,062
---
11/17/25
---
$8.91
294,715
-1.4
D
R
11/18/25 - 7:02:25 pm
15
    
 
MERENDINO LAUREN
O
S
$33,216
3,726
---
11/17/25
---
$8.91
50,809
-6.8
D
R
11/18/25 - 7:00:31 pm
16
    
 
BENDER JEREMY
CEO,DIR
S
$141,690
15,894
---
11/17/25
---
$8.91
177,165
-8.2
D
R
11/18/25 - 6:59:24 pm
17
    
 
DUBOW ADAM
GC,SEC
JB
---
12,087
---
11/15/25
---
---
66,945
22.0
D
R
11/18/25 - 7:04:11 pm
18
    
 
YORK CHARLES N II
COO,CFO
JB
---
16,875
---
11/15/25
---
---
298,777
6.0
D
R
11/18/25 - 7:02:25 pm
19
    
 
MERENDINO LAUREN
O
JB
---
10,536
---
11/15/25
---
---
54,535
23.9
D
R
11/18/25 - 7:00:31 pm
20
    
 
BENDER JEREMY
CEO,DIR
JB
---
31,694
---
11/15/25
---
---
193,059
19.6
D
R
11/18/25 - 6:59:24 pm
21
1y
23
87%
-31%
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
22
1y
6
83%
-27%
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
23
    
 
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
24
    
 
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
25
    
 
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
26
    
 
DUBOW ADAM
GC,SEC
JB
---
12,087
---
8/15/25
---
---
59,223
25.6
D
R
8/19/25 - 7:38:03 pm
27
    
 
BENDER JEREMY
CEO,DIR
JB
---
31,686
---
8/15/25
---
---
177,423
21.7
D
R
8/19/25 - 7:37:00 pm
28
    
 
MERENDINO LAUREN
O
JB
---
10,536
---
8/15/25
---
---
45,697
30.0
D
R
8/19/25 - 7:36:13 pm
29
    
 
BENDER JEREMY
CEO,DIR
JS
---
601,259
---
7/10/25
---
---
14,450
-97.7
I
---
7/14/25 - 4:18:48 pm
30
    
 
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
31
    
 
VASCONCELLES MICHAEL
O
3
---
---
---
6/16/25
---
---
---
---
---
---
6/18/25 - 7:41:26 pm
32
    
 
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
33
1y
6
83%
-27%
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
34
1y
23
87%
-31%
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
35
    
 
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
36
    
 
MERENDINO LAUREN
O
JB
---
10,536
---
5/15/25
---
---
39,088
36.9
D
R
5/19/25 - 5:54:37 pm
37
    
 
DUBOW ADAM
GC
JB
---
12,086
---
5/15/25
---
---
51,688
30.5
D
R
5/19/25 - 5:48:04 pm
38
    
 
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
39
    
 
BENDER JEREMY
CEO,DIR
JB
---
31,686
---
5/15/25
---
---
159,701
24.8
D
R
5/19/25 - 5:44:25 pm
40
    
 
MERENDINO LAUREN
O
3
---
---
---
2/26/25
---
---
28,552
---
D
R
2/28/25 - 7:50:59 pm
41
1y
23
87%
-31%
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
42
1y
6
83%
-27%
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
43
    
 
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
44
    
 
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
45
    
 
DUBOW ADAM
GC
JB
---
12,086
---
2/15/25
---
---
44,248
37.6
D
R
2/21/25 - 6:08:31 pm
46
    
 
BENDER JEREMY
CEO,DIR
JB
---
31,686
---
2/15/25
---
---
140,063
29.2
D
R
2/21/25 - 6:05:43 pm
47
    
 
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
48
    
 
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
49
    
 
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
50
1y
6
83%
-27%
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
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