Sec Form 4 Filing - GILL DAVID N @ Y-mAbs Therapeutics, Inc. - 2021-01-19

Insider filing report for Changes in Beneficial Ownership
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FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person
GILL DAVID N
2. Issuer Name and Ticker or Trading Symbol
Y-mAbs Therapeutics, Inc. [ YMAB]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X __ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last) (First) (Middle)
C/O Y-MABS THERAPEUTICS, INC., 230 PARK AVENUE SUITE 3350
3. Date of Earliest Transaction (MM/DD/YY)
01/19/2021
(Street)
NEW YORK, NY10169
4. If Amendment, Date Original Filed (MM/DD/YY)
6. Individual or Joint/Group Filing (Check Applicable Line)
__ X __ Form filed by One Reporting Person
_____ Form filed by More than One Reporting Person
(City) (State) (Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 01/19/2021 M 2,000 ( 1 ) A $ 11.16 2,000 D
Common Stock 01/19/2021 S 2,000 ( 1 ) D $ 46.5226 ( 2 ) 0 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(MM/DD/YY)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Non-Employee Stock Option (right to buy) ( 3 ) $ 11.16 01/19/2021 M 2,000 ( 4 ) 04/24/2028 Common stock 2,000 $ 0 24,000 D
Reporting Owners
Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
GILL DAVID N
C/O Y-MABS THERAPEUTICS, INC.
230 PARK AVENUE SUITE 3350
NEW YORK, NY10169
X
Signatures
/s/ David N Gill 01/20/2021
Signature of Reporting Person Date
Explanation of Responses:
( 1 )The option exercise and sale transaction reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.
( 2 )This transaction was executed in multiple trades at prices ranging from $45.9500 to $47.6800. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected.
( 3 )Stock option granted to the Reporting Person as a non-employee director pursuant to the 2015 Equity Incentive Plan of Y-mAbs Therapeutics, Inc.
( 4 )The stock option was (a) granted on April 24, 2018 pursuant to the 2015 Equity Incentive Plan of Y-mAbs Therapeutics, Inc., and (b) represents the right to purchase a total of 32,000 shares of common stock; and (c) vests and becomes exercisable in equal monthly installments until the third anniversary of the date of grant subject to continued service through such dates and unless vesting is accelerated pursuant to the terms of the grant.

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* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
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