VASCONCELLES MICHAEL (Head of Research and Dev.) reported 1 transaction at DAY ONE BIOPHARMACEUTICALS, INC.
Review the transaction codes below to understand the nature of each event.
Filed: 4/23/2026ACC: 0001734755-26-000005
Officer· Head of Research and Dev.
Since Feb 2026
-854.27K
Net shares
Net seller
$0.00
Total acquired
0
Open market trades
0B · 0S
5
Total transactions
854.27K disposed
Non-Derivative Transactions1
Common Stock
Direct
Shares
−4.40K
Price / share
—
Trade value
—
% of position
New position
4/23/2026
4.40K→0.00
Total
Net shares
−4.40K
Net value
$0.00
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 4/23/2026 | D · Disposition | −4.40K | — | — | New position | 4.40K | 0.00 |
| Total | −4.40K | $0.00 | ||||||
Derivative Transactions4
Stock Option (right to buy Common Stock)
Direct
Converts to
Common Stock
346K shares
Shares
−346K
Strike price
6.64
Held after
0.00
Exercisable
—
4/23/2026
Stock Option (right to buy Common Stock)
Direct
Converts to
Common Stock
171K shares
Shares
−171K
Strike price
11.16
Held after
0.00
Exercisable
—
4/23/2026
Restricted Stock Unit (RSU)
Direct
Converts to
Common Stock
226K shares
Shares
−226K
Strike price
Held after
0.00
Exercisable
—
4/23/2026
Restricted Stock Unit (RSU)
Direct
Converts to
Common Stock
106.88K shares
Shares
−106.88K
Strike price
Held after
0.00
Exercisable
—
4/23/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Stock Option (right to buy Common Stock) Direct | Common Stock346K shares | 4/23/2026 | D · Disposition | −346K | 6.64 | — | 0.00 |
| Stock Option (right to buy Common Stock) Direct | Common Stock171K shares | 4/23/2026 | D · Disposition | −171K | 11.16 | — | 0.00 |
| Restricted Stock Unit (RSU) Direct | Common Stock226K shares | 4/23/2026 | D · Disposition | −226K | — | 0.00 | |
| Restricted Stock Unit (RSU) Direct | Common Stock106.88K shares | 4/23/2026 | D · Disposition | −106.88K | — | 0.00 |