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* HUNT RONALD (Last) (First) (Middle) C/O NEW LEAF VENTURES 7 TIMES SQUARE, SUITE 3502 (Street) NEW YORK NY 10036 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 02/07/2019	3. Issuer Name and Ticker or Trading Symbol Harpoon Therapeutics, Inc. [ HARP ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 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)

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
Series B Convertible Preferred Stock	(1)	(1)	Common Stock	1,564,272	$0.00	I	See footnote(2)(3)
Series C Convertible Preferred Stock	(1)	(1)	Common Stock	464,281	$0.00	I	See footnote(2)(3)
Series C Convertible Preferred Stock	(1)	(1)	Common Stock	464,281	$0.00	I	See footnote(4)(5)
Director Stock Option (right to buy)	(6)	12/19/2028	Common Stock	20,335	$2.12	D

Explanation of Responses:

1. All series of convertible preferred stock will automatically convert into shares of the Issuer's common stock on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and have no expiration date.

2. These shares are held directly by New Leaf Ventures III, L.P. ("NLV-III"). The general partner of NLV-III is New Leaf Venture Associates III, L.P. ("NLVA-III"). The general partner of NLVA-III is New Leaf Venture Management III, L.L.C. ("Management-III"). Each of NLVA-III and Management-III disclaim beneficial ownership of these securities and this report shall not be deemed an admission that NLVA-III or Management-III are beneficial owners of such securities for purposes of Section 16 or any other purpose, except to the extent of their respective pecuniary interests therein.

3. Each of Ronald M. Hunt, a member of the Issuer's board of directors, Vijay K. Lathi, and Liam T. Ratcliffe, the managers of Management-III (the "NLV-III Managers"), may each be deemed to have shared voting and investment power with respect to these securities. Each of the NLV-III Managers disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

4. These shares are held directly by New Leaf Ventures Biopharma Opportunities II, L.P. ("BPO-II"). The general partner of BPO-II is New Leaf BPO Associates II, L.P. ("NLBA-II"). The general partner of NLBA-II is New Leaf BPO Management II, L.L.C. ("BPO Management-II"). Each of NLBA-II and BPO Management-II disclaim beneficial ownership of these securities and this report shall not be deemed an admission that NLBA-II or BPO Management-II are beneficial owners of such securities for purposes of Section 16 or any other purpose, except to the extent of their respective pecuniary interests therein.

5. Each of Ronald M. Hunt, Vijay K. Lathi, Liam T. Ratcliffe and Isaac A. Manke, the managers of BPO Management-II (the "BPO-II Managers"), may each be deemed to have shared voting and investment power with respect to these securities. Each of the BPO-II Managers disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

6. The stock option vests in three annual installments starting on December 19, 2019, until such time as the option is 100% vested, subject to the continuing service of the Reporting Person on each vesting date.

Remarks:

	/s/ Ronald Hunt by Winston Macaraeg, Attorney-in-Fact	02/07/2019
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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