Thomas Gad - 03 Jun 2025 Form 4 Insider Report for Y-mAbs Therapeutics, Inc. (YMAB)

Role
CHIEF BUSINESS OFFICER, Director
Signature
/s/ John LaRocca, Attorney-in-Fact
Issuer symbol
YMAB
Transactions as of
03 Jun 2025
Transactions value $
$206,000
Form type
4
Filing time
05 Jun 2025, 19:17:49 UTC
Previous filing
11 Mar 2025
Next filing
18 Sep 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Gad Thomas CHIEF BUSINESS OFFICER, Director C/O Y-MABS THERAPEUTICS, INC., 202 CARNEGIE CENTER, SUITE 301, PRINCETON /s/ John LaRocca, Attorney-in-Fact 05 Jun 2025 0001753224

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction YMAB Common Stock Options Exercise $206K +103K +50.81% $2.00 306K 03 Jun 2025 Direct F1
holding YMAB Common Stock 67.7K 03 Jun 2025 By GAD Enterprises LLC F2
holding YMAB Common Stock 60K 03 Jun 2025 By Children F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction YMAB Employee Stock Option (right to buy) Options Exercise $0 -103K -100% $0.00 0 03 Jun 2025 Common Stock 103K $2.00 Direct F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents shares acquired through the exercise of Employee Stock Options.
F2 Reporting Person is sole member of GAD Enterprises, LLC and the sole member and manager of GAD Management, LLC, the manager of GAD Enterprises, LLC, and as such Reporting Person has sole voting and dispositive power with respect to such shares.
F3 Represents shares owned by Reporting Person's children who are deemed to share Reporting Person's household.
F4 The stock option vested and became exercisable as to 25% of the shares subject to the option on June 10, 2016, and thereafter vested as to 1/48th of the shares in equal monthly installments, until such time as the option was 100% vested on June 10, 2019.