# EDGAR Filing Document

**Accession Number:** 0001247851
**File Stem:** 0000899243-23-009741
**Filing Date:** 2023-3
**Character Count:** 9080
**Document Hash:** 01335e66627930c4579e19b72d2390c5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000899243-23-009741.hdr.sgml**: 20230327

**ACCESSION NUMBER**: 0000899243-23-009741

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230323

**FILED AS OF DATE**: 20230327

**DATE AS OF CHANGE**: 20230327

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** HUNT RONALD
- **CENTRAL INDEX KEY:** 0001247851

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38800
- **FILM NUMBER:** 23765623

**MAIL ADDRESS:**
- **STREET 1:** C/O CREDIT SUISSE 1ST BOSTON PRV EQY
- **STREET 2:** 11 MADISON AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10010
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Harpoon Therapeutics, Inc.
- **CENTRAL INDEX KEY:** 0001708493
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **IRS NUMBER:** 473458693
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 131 OYSTER POINT BOULEVARD
- **STREET 2:** SUITE 300
- **CITY:** SOUTH SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94080
- **BUSINESS PHONE:** 650-443-7400

**MAIL ADDRESS:**
- **STREET 1:** 131 OYSTER POINT BOULEVARD
- **STREET 2:** SUITE 300
- **CITY:** SOUTH SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94080

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>HUNT RONALD<br><sub>(Last) (First) (Middle)</sub><br>C/O NEW LEAF VENTURE PARTNERS<br>156 FIFTH AVENUE, SUITE 820<br><sub>(Street)</sub><br>NEW YORK, NY 10010<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-03-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Harpoon Therapeutics, Inc. [ HARP ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 8.000% Series A Redeemable Preferred Stock | 2023-03-23 |  | P |  | 10000<sup>(1)</sup> | A | $1000.00 | 10000 | I | See Footnote<sup>(2)(3)</sup> |
| Common Stock |  |  |  |  |  |  |  | 913860 | I | See Footnote<sup>(2)(3)</sup> |
| Common Stock |  |  |  |  |  |  |  | 2242839 | I | See Footnote<sup>(4)(5)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Common Stock Warrant (Right to Buy) | $0.9789 | 2023-03-23 |  | P |  | 2994305 |  | 2023-03-23 | 2031-03-23 | Common Stock | 2994305 | <sup>(1)</sup> | 2994305 | I | See Footnote<sup>(2)(3)</sup> |

---

### Footnotes:

(1) Shares of the Issuer's non-convertible, non-voting 8.000% Series A Redeemable Preferred Stock, par value $0.0001 per share (the "Series A Preferred Stock"), were purchased by New Leaf Biopharma Opportunities II, L.P. ("BPO-II") in the Issuer's private placement of Series A Preferred Stock and warrants and pursuant to a Securities Purchase Agreement, dated March 22, 2023, by and among the Issuer, BPO-II and the other purchasers named therein. The terms of the Series A Preferred Stock are set forth in the Certificate of Designation filed as Exhibit 3.1 to the Issuer's Form 8-K filed with the Securities and Exchange Commission on March 27, 2023. The shares of Series A Preferred Stock and Warrants acquired by BPO-II were purchased at a price representative of $1,000 per share for the Series A Preferred Stock.

(2) These shares are held directly by BPO-II. The sole general partner of BPO-II is New Leaf BPO Associates II, L.P. ("NLBA-II"). The sole 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.

(3) The Reporting Person, a board member of the Issuer, and Vijay K. Lathi (the "BPO-II Managing Directors") are managing directors of BPO Management-II and may each be deemed to have shared voting and investment power with respect to these securities. Each of the BPO-II Managing Directors 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 III, L.P. ("NLV-III"). The sole general partner of NLV-III is New Leaf Venture Associates III,L.P. ("NLVA-III"). The sole 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.

(5) The Reporting Person, a board member of the Issuer, and Vijay K. Lathi (the "NLV-III Managers") are managing directors of Management-III and may 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.

**Signature:** /s/ Laura Berezin, Attorney-in-Fact  
**Date:** 2023-03-27

### Remarks:

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 4 (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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**