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*
UBS Oncology Impact Fund L.P.

(Last) (First) (Middle)
C/O MPM CAPITAL
450 KENDALL STREET

(Street)
CAMBRIDGE MA 02142

(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)
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)
Form filed by One Reporting Person
X 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 A Preferred Stock (1) (1) Common Stock 1,525,165 0.00(1) D(2)(3)
Series B Preferred Stock (1) (1) Common Stock 1,578,755 0.00(1) D(2)(3)
Series C Preferred Stock (1) (1) Common Stock 417,853 0.00(1) D(2)(3)
Common Stock Warrant (Right to Buy) 11/01/2016 11/01/2026 Common Stock 76,258 0.0492 D(2)(3)
Common Stock Warrant (Right to Buy) 01/10/2017 01/10/2027 Common Stock 50,838 0.0492 D(2)(3)
1. Name and Address of Reporting Person*
UBS Oncology Impact Fund L.P.

(Last) (First) (Middle)
C/O MPM CAPITAL
450 KENDALL STREET

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
1. Name and Address of Reporting Person*
MPM Oncology Impact Management GP LLC

(Last) (First) (Middle)
C/O MPM CAPITAL
450 KENDALL STREET

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
1. Name and Address of Reporting Person*
MPM Oncology Impact Management LP

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
450 KENDALL STREET

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Oncology Impact Fund (Cayman) Management L.P.

(Last) (First) (Middle)
C/O MPM CAPITAL
450 KENDALL STREET

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
Explanation of Responses:
1. All series of convertible preferred stock will automatically convert into the number of 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. The reported securities are held in the account of UBS Oncology Impact Fund L.P. ("UBS Oncology"). MPM Oncology Impact Management GP LLC ("Oncology GP LLC") is the General Partner of MPM Oncology Impact Management LP, the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is the managing director of Oncology GP LLC.
3. The Reporting Persons disclaims beneficial ownership of the securities except to the extent of its pecuniary interest therein.
Remarks:
/s/ Ansbert Gadicke, managing director of MPM Oncology Impact Management GP LLC, the general partner of MPM Oncology Impact Management LP, the general partner of Oncology Impact Fund (Cayman) Management L.P., the GP of UBS Oncology Impact Fund L.P 02/07/2019
/s/ Ansbert Gadicke, managing director of MPM Oncology Impact Management GP LLC 02/07/2019
/s/ Ansbert Gadicke, managing director of MPM Oncology Impact Management GP LLC, the general partner of MPM Oncology Impact Management LP 02/07/2019
/s/ Ansbert Gadicke, managing director of MPM Oncology Impact Management GP LLC, the general partner of MPM Oncology Impact Management LP, the general partner of Oncology Impact Fund (Cayman) Management L.P. 02/07/2019
** 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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