# EDGAR Filing Document

**Accession Number:** 0001661059
**File Stem:** 0001213900-25-078673
**Filing Date:** 2025-8
**Character Count:** 5969
**Document Hash:** 5cbd03b066d43dd76a4cb1acbb8f6806
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-078673.hdr.sgml**: 20250819

**ACCESSION NUMBER**: 0001213900-25-078673

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250620

**FILED AS OF DATE**: 20250819

**DATE AS OF CHANGE**: 20250819

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Simcere Zaiming, Inc.
- **CENTRAL INDEX KEY:** 0002080252

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38905
- **FILM NUMBER:** 251233665

**BUSINESS ADDRESS:**
- **STREET 1:** 20 ACORN PARK DR, CAMBRIDGE, MA 02140
- **CITY:** CAMBRIDGE
- **STATE:** MA
- **ZIP:** 02140
- **BUSINESS PHONE:** 15049574163

**MAIL ADDRESS:**
- **STREET 1:** 20 ACORN PARK DR, CAMBRIDGE, MA 02140
- **CITY:** CAMBRIDGE
- **STATE:** MA
- **ZIP:** 02140
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NextCure, Inc.
- **CENTRAL INDEX KEY:** 0001661059
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 475231247
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 9000 VIRGINIA MANOR ROAD, SUITE 200
- **CITY:** BELTSVILLE
- **STATE:** MD
- **ZIP:** 20705
- **BUSINESS PHONE:** 240-399-4900

**MAIL ADDRESS:**
- **STREET 1:** 9000 VIRGINIA MANOR ROAD, SUITE 200
- **CITY:** BELTSVILLE
- **STATE:** MD
- **ZIP:** 20705

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Simcere Zaiming, Inc.<br><sub>(Last) (First) (Middle)</sub><br>20 ACORN PARK DR.<br><sub>(Street)</sub><br>CAMBRIDGE, MA 02140<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>NextCure, Inc. [ NXTC ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-06-20 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<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 Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Common Stock | 338636 | I | See footnotes<sup>(1)(2)(3)</sup> |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) These securities are directly held by Simcere Zaiming, Inc. ("Simcere Zaiming" or the "Reporting Person") and may be deemed to be indirectly beneficially owned by the other persons.

(2) Jiangsu Simcere Zaiming Pharmaceutical Co., Ltd. ("Jiangsu Zaiming") is the sole shareholder of Simcere Zaiming, Inc. Hainan Simcere Zaiming Pharmaceutical Co., Ltd. ("Hainan Zaiming") is the sole shareholder of Jiangsu Zaiming. Simcere Pharmaceutical Group Limited ("Simcere Group") is the controlling shareholder of Hainan Zaiming through several intermediate companies. Mr. Ren Jinsheng is the chief executive officer and chairman of the board of directors of Simcere Group and a director of Hainan Zaiming. Mr. Tang Renhong is a director of Simcere Group, the chief executive officer and chairman of the board of directors of Hainan Zaiming, a director of Jiangsu Zaiming and the chief executive officer and sole director of Simcere Zaiming. Messrs. Ren Jinsheng and Tang Renhong may be deemed to be the beneficial owners having shared voting power and shared investment power over the securities described in this footnote.

(3) The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of its pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that the Reporting Person is the beneficial owner of any of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

**Signature:** Simcere Zaiming, Inc. By: /s/ Renhong Tang, Chief Executive Officer  
**Date:** 2025-08-19

### 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.**