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Filing Details

Accession Number:: 0001209191-19-010312
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2019-02-14 17:32:09
Reporting Period:: 2019-02-12

Accepted Time:: 2019-02-14 17:32:09
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1708493	Harpoon Therapeutics Inc.	HARP	()	DE

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1263048	Mpm Asset Management Llc	C/O Mpm Capital 450 Kendall Street Cambridge MA 02142	No	No	Yes	No
1473930	Todd Foley	C/O Mpm Capital 450 Kendall Street Cambridge MA 02142	No	No	Yes	No
1609492	Mpm Bioventures 2014, L.p.	C/O Mpm Capital 450 Kendall Street Cambridge MA 02142	No	No	Yes	No
1609493	Mpm Bioventures 2014 (B), L.p.	C/O Mpm Capital 450 Kendall Street Cambridge MA 02142	No	No	Yes	No
1609495	Mpm Asset Management Investors Bv2014 Llc	C/O Mpm Capital 450 Kendall Street Cambridge MA 02142	No	No	Yes	No
1765021	Mpm Bioventures 2014 Llc	C/O Mpm Capital 450 Kendall Street Cambridge MA 02142	No	No	Yes	No
1765091	Mpm Bioventures 2014 Gp Llc	C/O Mpm Capital 450 Kendall Street Cambridge MA 02142	No	No	Yes	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2019-02-12	1,525,164	$0.00	1,847,227	No	4	C	Indirect	See Footnote
Common Stock	Acquisiton	2019-02-12	1,578,751	$0.00	3,425,978	No	4	C	Indirect	See Footnote
Common Stock	Acquisiton	2019-02-12	417,852	$0.00	3,843,830	No	4	C	Indirect	See Footnote
Common Stock	Acquisiton	2019-02-12	432,119	$0.05	4,275,949	No	4	X	Indirect	See Footnote
Common Stock	Disposition	2019-02-12	1,524	$14.00	4,274,425	No	4	S	Indirect	See Footnote
Common Stock	Acquisiton	2019-02-12	250,000	$14.00	4,524,425	No	4	P	Indirect	See Footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	C	Indirect	See Footnote
No	4	C	Indirect	See Footnote
No	4	C	Indirect	See Footnote
No	4	X	Indirect	See Footnote
No	4	S	Indirect	See Footnote
No	4	P	Indirect	See Footnote

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Series A Preferred Stock	Disposition	2019-02-12	1,525,164	$0.00	1,525,164	$0.00
Common Stock	Series B Preferred Stock	Disposition	2019-02-12	1,578,751	$0.00	1,578,751	$0.00
Common Stock	Series C Preferred Stock	Disposition	2019-02-12	417,852	$0.00	417,852	$0.00
Common Stock	Common Stock Warrant (Right to Buy)	Disposition	2019-02-12	25,418	$0.00	25,418	$0.05
Common Stock	Common Stock Warrant (Right to Buy)	Disposition	2019-02-12	57,192	$0.00	57,192	$0.05
Common Stock	Common Stock Warrant (Right to Buy)	Disposition	2019-02-12	171,579	$0.00	171,579	$0.05
Common Stock	Common Stock Warrant (Right to Buy)	Disposition	2019-02-12	50,837	$0.00	50,837	$0.05
Common Stock	Common Stock Warrant (Right to Buy)	Disposition	2019-02-12	76,256	$0.00	76,256	$0.05
Common Stock	Common Stock Warrant (Right to Buy)	Disposition	2019-02-12	50,837	$0.00	50,837	$0.05

Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
		No	4	C	Indirect
		No	4	C	Indirect
		No	4	C	Indirect
2015-03-24	2025-03-24	No	4	X	Indirect
2015-07-23	2025-07-23	No	4	X	Indirect
2015-08-19	2025-08-19	No	4	X	Indirect
2015-12-16	2025-12-16	No	4	X	Indirect
2016-11-01	2026-11-01	No	4	X	Indirect
2017-01-10	2027-01-10	No	4	X	Indirect

Footnotes

All series of convertible preferred stock automatically converted 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 had no expiration date.
The shares are held as follows: 1,382,777 by MPM BioVentures 2014, L.P. ("BV 2014"), 92,229 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)"), 50,158 by MPM Asset Management Investors BV2014 LLC ("AM BV2014") and 322,063 by MPM Asset Management LLC ("AM LLC"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the members of BV LLC and Luke Evnin and Anbert Gadicke are the members of AM LLC.
Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.
The shares are held as follows: 2,814,142 by BV 2014, 187,696 by BV 2014(B), 102,077 by AM BV2014 and 322,063 by MPM LLC.
The shares are held as follows: 3,192,985 by BV 2014, 212,964 by BV 2014(B), 115,818 by AM BV2014 and 322,063 by MPM LLC.
On February 12, 2019, BV 2014, BV 2014(B) and AM BV2014 exercised warrants to purchase an aggregate of 432,119 shares of the Issuer's common stock for $0.0492 per share. The warrants were exercised as follows: 391,784 by BV 2014, 26,129 by BV 2014(B) and 14,206 by AM BV2014. The exercise price was paid on a cashless basis, resulting in the Issuer's withholding of an aggregate of 1,524 of the warrant shares to pay the exercise price and issuing to the respective Reporting Persons the remaining 430,595 shares.
The shares are held as follows: 3,584,769 by BV 2014, 239,093 by BV 2014(B), 130,024 by AM BV2014 and 322,063 by MPM LLC.
The shares are held as follows: 3,583,391 by BV 2014, 238,998 by BV 2014(B), 129,973 by AM BV2014 and 322,063 by MPM LLC.
The shares are held as follows: 3,810,051 by BV 2014, 254,116 by BV 2014(B), 138,195 by AM BV2014 and 322,063 by MPM LLC.
No securities held by the Reporting Persons.