BENDER JEREMY

PrivateCIK: 1863107
Location

SOUTH SAN FRANCISCO, CA

BENDER JEREMY (Chief Executive Officer) reported 7 transactions at DAY ONE BIOPHARMACEUTICALS, INC.

Review the transaction codes below to understand the nature of each event.

InsiderBENDER JEREMYCIK 1863107
DirectorOfficer· Chief Executive Officer
Since May 2021
-5.28M
Net shares
Net seller
$0.00
Total acquired
0
Open market trades
0B · 0S
17
Total transactions
5.28M disposed
Non-Derivative Transactions7

Common Stock

Direct
D · Disposition

Shares

204.64K

Price / share

Trade value

% of position

New position
4/23/2026
204.64K0.00

Common Stock

Indirect
D · Disposition

Shares

20.20K

Price / share

Trade value

% of position

New position
4/23/2026
20.20K0.00

Common Stock

Indirect
D · Disposition

Shares

300K

Price / share

Trade value

% of position

New position
4/23/2026
300K0.00

Common Stock

Indirect
D · Disposition

Shares

147.70K

Price / share

Trade value

% of position

New position
4/23/2026
147.70K0.00

Common Stock

Indirect
D · Disposition

Shares

18.20K

Price / share

Trade value

% of position

New position
4/23/2026
18.20K0.00

Common Stock

Indirect
D · Disposition

Shares

300K

Price / share

Trade value

% of position

New position
4/23/2026
300K0.00

Common Stock

Indirect
D · Disposition

Shares

808.28K

Price / share

Trade value

% of position

New position
4/23/2026
808.28K0.00
Total

Net shares

1.80M

Net value

$0.00

Derivative Transactions10

Stock Option (right to buy Common Stock)

Direct
D · Disposition
Converts to

Common Stock

1.46M shares

Shares

1.46M

Strike price

8.99

Held after

0.00

Exercisable

4/23/2026

Stock Option (right to buy Common Stock)

Direct
D · Disposition
Converts to

Common Stock

397K shares

Shares

397K

Strike price

8.99

Held after

0.00

Exercisable

4/23/2026

Stock Option (right to buy Common Stock)

Direct
D · Disposition
Converts to

Common Stock

244K shares

Shares

244K

Strike price

8.99

Held after

0.00

Exercisable

4/23/2026

Stock Option (right to buy Common Stock)

Direct
D · Disposition
Converts to

Common Stock

286K shares

Shares

286K

Strike price

8.99

Held after

0.00

Exercisable

4/23/2026

Stock Option (right to buy Common Stock)

Direct
D · Disposition
Converts to

Common Stock

286K shares

Shares

286K

Strike price

8.99

Held after

0.00

Exercisable

4/23/2026

Stock Option (right to buy Common Stock)

Direct
D · Disposition
Converts to

Common Stock

355K shares

Shares

355K

Strike price

11.16

Held after

0.00

Exercisable

4/23/2026

Restricted Stock Unit (RSU)

Direct
D · Disposition
Converts to

Common Stock

14.25K shares

Shares

14.25K

Strike price

Held after

0.00

Exercisable

4/23/2026

Restricted Stock Unit (RSU)

Direct
D · Disposition
Converts to

Common Stock

81.82K shares

Shares

81.82K

Strike price

Held after

0.00

Exercisable

4/23/2026

Restricted Stock Unit (RSU)

Direct
D · Disposition
Converts to

Common Stock

128.56K shares

Shares

128.56K

Strike price

Held after

0.00

Exercisable

4/23/2026

Restricted Stock Unit (RSU)

Direct
D · Disposition
Converts to

Common Stock

222.19K shares

Shares

222.19K

Strike price

Held after

0.00

Exercisable

4/23/2026
BENDER JEREMY — Insider Transaction (Form 4) Filed Apr 23, 2026 | Finecho