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* TYAGI ASHU (Last) (First) (Middle) C/O SCOPIA CAPITAL MANAGEMENT LP 152 WEST 57TH STREET (Street) NEW YORK NY 10019 (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	962,566	I	See Footnotes(1)(2)(3)

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

Explanation of Responses:

1. The securities reported in this Form 3 are held in the accounts of certain private investment funds, specifically, Scopia Health Care International Master Fund LP ("Scopia Health International") and Scopia Health Care LLC ("Scopia Health LLC", and together with Scopia Health International, the "Investment Vehicles"). Scopia Health International holds 659,358 shares of the Company's common stock and Scopia Health LLC holds 303,208 shares of the Company's common stock. Scopia Capital Management LP ("Scopia Management") serves as the investment manager of the Investment Vehicles and has sole voting and investment power over the Company's securities held by the Investment Vehicles. Reporting Person may be deemed to exercise voting and investment power over the Company's securities held by the Investment Vehicles as a partner of Scopia Management.

2. Further, Reporting Person may be deemed to have a pecuniary interest in a portion of the securities held directly by the Investment Vehicles due to the right of an affiliate of Scopia Management to receive performance-based allocations and due to Reporting Person's investments in the Investment Vehicles.

3. Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that Reporting Person is the beneficial owner of such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

	/s/ Ashutosh Tyagi	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).
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