ROSSI MICHAEL J

PrivateCIK: 1948795
Location

PRINCETON, NJ

ROSSI MICHAEL J (President & CEO) reported 2 transactions at Y-MABS THERAPEUTICS, INC.

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

InsiderROSSI MICHAEL JCIK 1948795
IssuerY-MABS THERAPEUTICS, INC.CIK 1722964
DirectorOfficer· President & CEO
Since Nov 2023
-1.34M
Net shares
Net seller
$68.6K
Total sold
0
Open market trades
0B · 0S
10
Total transactions
1.34M disposed
Non-Derivative Transactions2

Common Stock

Direct
U · U

Shares

7.98K

Price / share

$8.60

Trade value

$68.65K

% of position

New position
9/16/2025
7.98K0.00

Common Stock

Direct
D · Disposition

Shares

129.10K

Price / share

Trade value

% of position

New position
9/16/2025
129.10K0.00
Total

Net shares

137.08K

Net value

-$68.65K

Derivative Transactions8

Employee Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

615.24K shares

Shares

615.24K

Strike price

5.75

Held after

0.00

Exercisable

9/16/2025

Employee Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

214.20K shares

Shares

214.20K

Strike price

14.36

Held after

0.00

Exercisable

9/16/2025

Employee Stock Option (right to buy)

Direct
D · Disposition
Converts to

Common Stock

210.70K shares

Shares

210.70K

Strike price

6.16

Held after

0.00

Exercisable

9/16/2025

Restricted Stock Units

Direct
D · Disposition
Converts to

Common Stock

18K shares

Shares

18K

Strike price

Held after

0.00

Exercisable

9/16/2025

Restricted Stock Units

Direct
D · Disposition
Converts to

Common Stock

18K shares

Shares

18K

Strike price

Held after

0.00

Exercisable

9/16/2025

Restricted Stock Units

Direct
D · Disposition
Converts to

Common Stock

18K shares

Shares

18K

Strike price

Held after

0.00

Exercisable

9/16/2025

Restricted Stock Units

Direct
D · Disposition
Converts to

Common Stock

52.65K shares

Shares

52.65K

Strike price

Held after

0.00

Exercisable

9/16/2025

Restricted Stock Units

Direct
D · Disposition
Converts to

Common Stock

52.65K shares

Shares

52.65K

Strike price

Held after

0.00

Exercisable

9/16/2025
ROSSI MICHAEL J — Insider Transaction (Form 4) Filed Sep 18, 2025 | Finecho