SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
 
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1. Name and Address of Reporting Person*
Raskin Gregory S

(Last) (First) (Middle)
C/O MEMORIAL SLOAN KETTERING CANCER
CENTER 1275 YORK AVENUE, BOX 524

(Street)
NEW YORK NY 10065

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
09/20/2018
3. Issuer Name and Ticker or Trading Symbol
Y-mAbs Therapeutics, Inc. [ YMAB ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 5,882 D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Non-Employee Stock Option (right to buy) (1) 10/21/2026 Common Stock 36,000 4.38 D
Non-Employee Stock Option (right to buy) (2) 04/24/2028 Common Stock 32,000 11.16 D
Explanation of Responses:
1. The stock option vested and became exercisable as to 33% of the shares subject to the option on October 21, 2016, and thereafter vests as to 1/36th of the shares in equal monthly installments, until such time as the option is 100% vested, subject to the Reporting Person being a service provider on each vesting date.
2. 1/36th of the shares of the option to vest in equal monthly installments starting April 24, 2018 until such time as the option is 100% vested, subject to the Reporting Person continuing to be a service provider on each vesting date.
/s/ Gregory S. Raskin 09/20/2018
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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