MERENDINO LAUREN

PrivateCIK: 1855298
Location

BRISBANE, CA

MERENDINO LAUREN (Chief Commercial Officer) sold 6.8% of their position (3.73K shares) of DAY ONE BIOPHARMACEUTICALS, INC. on the open market

Open‑market sale worth $33.2K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderMERENDINO LAURENCIK 1855298
Officer· Chief Commercial Officer
Since Feb 2026
-3.73K
Net shares
Net seller
$33.2K
Total sold
1
Open market trades
0B · 1S
7
Total transactions
10.54K acquired · 14.26K disposed
Non-Derivative Transactions4

Common Stock

Direct
M · Option Exercise

Shares

+3.16K

Price / share

Trade value

% of position

7.2%
11/15/2025
44K47.16K

Common Stock

Direct
M · Option Exercise

Shares

+3.69K

Price / share

Trade value

% of position

7.8%
11/15/2025
47.16K50.85K

Common Stock

Direct
M · Option Exercise

Shares

+3.69K

Price / share

Trade value

% of position

7.3%
11/15/2025
50.85K54.53K

Common Stock

Direct
S · Sale

Shares

3.73K

Price / share

$8.91

Trade value

$33.22K

% of position

6.8%
11/17/2025
54.53K50.81K
Total

Net shares

+6.81K

Net value

-$33.22K

Derivative Transactions3

Restricted Stock Unit (RSU)

Direct
M · Option Exercise
Converts to

Common Stock

3.16K shares

Shares

3.16K

Strike price

Held after

22.14K

Exercisable

11/15/2025

Restricted Stock Unit (RSU)

Direct
M · Option Exercise
Converts to

Common Stock

3.69K shares

Shares

3.69K

Strike price

Held after

29.50K

Exercisable

11/15/2025

Restricted Stock Unit (RSU)

Direct
M · Option Exercise
Converts to

Common Stock

3.69K shares

Shares

3.69K

Strike price

Held after

44.25K

Exercisable

11/15/2025
MERENDINO LAUREN — Insider Transaction (Form 4) Filed Nov 18, 2025 | Finecho