Thomas Gad - Dec 14, 2021 Form 4 Insider Report for Y-mAbs Therapeutics, Inc. (YMAB)

Role: Chairman, President and Head of Business Development & Strategy, Director
Signature: /s/ Thomas Gad
Stock symbol: YMAB
Transactions as of: Dec 14, 2021
Transactions value $: $0
Form type: 4
Date filed: 12/16/2021, 05:04 PM
Previous filing: Dec 8, 2021
Next filing: Jan 20, 2022

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)	Award	$0	+110K		$0.00	110K	Dec 14, 2021	Common stock	110K	$15.73	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Stock options granted to the Reporting Person pursuant to the 2018 Equity Incentive Plan of Y-mAbs Therapeutics, Inc.
F2	The stock option shall vest and become exercisable as to 25% of the shares subject to the option on December 14, 2022, and thereafter vests and become exercisable as to 1/48th of the shares in equal monthly installments, until such time as the option is 100% vested, subject to the continuing employment of the Reporting Person on each vesting date.

Remarks:

Chairman, President and Head of Business Development & Strategy