# EDGAR Filing Document

**Accession Number:** 0001762304
**File Stem:** 0000902664-26-000675
**Filing Date:** 2026-2
**Character Count:** 10262
**Document Hash:** b62ef933de50a9b4ae1a585d134dc3d6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000902664-26-000675.hdr.sgml**: 20260203

**ACCESSION NUMBER**: 0000902664-26-000675

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251210

**FILED AS OF DATE**: 20260203

**DATE AS OF CHANGE**: 20260203

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** HILLHOUSE INVESTMENT MANAGEMENT, LTD.
- **CENTRAL INDEX KEY:** 0001510589

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41929
- **FILM NUMBER:** 26592806

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** OFFICE #122, WINDWARD 3 BUILDING
- **STREET 2:** REGATTA OFFICE PARK, WEST BAY ROAD
- **CITY:** GRAND CAYMAN
- **PROVINCE COUNTRY:** E9
- **ZIP:** KY1-9006
- **BUSINESS PHONE:** 345-743-4613

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** OFFICE #122, WINDWARD 3 BUILDING
- **STREET 2:** REGATTA OFFICE PARK, WEST BAY ROAD
- **CITY:** GRAND CAYMAN
- **PROVINCE COUNTRY:** E9
- **ZIP:** KY1-9006

**FORMER NAME:**
- **FORMER CONFORMED NAME:** HILLHOUSE CAPITAL MANAGEMENT, LTD.
- **DATE OF NAME CHANGE:** 20190510

**FORMER NAME:**
- **FORMER CONFORMED NAME:** Hillhouse Capital Management, Ltd.
- **DATE OF NAME CHANGE:** 20150109

**FORMER NAME:**
- **FORMER CONFORMED NAME:** Hillhouse Capital Management Pte. Ltd.
- **DATE OF NAME CHANGE:** 20150108
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** HHLR ADVISORS, LTD.
- **CENTRAL INDEX KEY:** 0001762304

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-41929
- **FILM NUMBER:** 26592805

**BUSINESS ADDRESS:**
- **STREET 1:** OFFICE #122, WINDWARD 3 BUILDING
- **STREET 2:** REGATTA OFFICE PARK, WEST BAY ROAD
- **CITY:** GRAND CAYMAN
- **STATE:** E9
- **ZIP:** KY1-9006
- **BUSINESS PHONE:** (345) 749-8643

**MAIL ADDRESS:**
- **STREET 1:** OFFICE #122, WINDWARD 3 BUILDING
- **STREET 2:** REGATTA OFFICE PARK, WEST BAY ROAD
- **CITY:** GRAND CAYMAN
- **STATE:** E9
- **ZIP:** KY1-9006

**FORMER NAME:**
- **FORMER CONFORMED NAME:** HILLHOUSE CAPITAL ADVISORS, LTD.
- **DATE OF NAME CHANGE:** 20190510

**FORMER NAME:**
- **FORMER CONFORMED NAME:** Hillhouse Capital Advisors, Ltd.
- **DATE OF NAME CHANGE:** 20181218
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ArriVent BioPharma, Inc.
- **CENTRAL INDEX KEY:** 0001868279
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 18 CAMPUS BLVD.
- **STREET 2:** SUITE 100
- **CITY:** NEWTOWN SQUARE
- **STATE:** PA
- **ZIP:** 19073-3269
- **BUSINESS PHONE:** 240-780-6356

**MAIL ADDRESS:**
- **STREET 1:** 18 CAMPUS BLVD.
- **STREET 2:** SUITE 100
- **CITY:** NEWTOWN SQUARE
- **STATE:** PA
- **ZIP:** 19073-3269

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ArriVent Biopharma, Inc.
- **DATE OF NAME CHANGE:** 20210617

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[x] 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>HILLHOUSE INVESTMENT MANAGEMENT, LTD.<br><sub>(Last) (First) (Middle)</sub><br>OFFICE #122, WINDWARD 3 BUILDING<br>REGATTA OFFICE PARK, WEST BAY ROAD<br><sub>(Street)</sub><br>GRAND CAYMAN, E9 KY1-9006<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-12-10 | **5. 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>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>ArriVent BioPharma, Inc. [ AVBP ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>HHLR ADVISORS, LTD.<br><sub>(Last) (First) (Middle)</sub><br>OFFICE #122, WINDWARD 3 BUILDING<br>REGATTA OFFICE PARK, WEST BAY ROAD<br><sub>(Street)</sub><br>GRAND CAYMAN, E9 KY1-9006<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-12-10 | **5. 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>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>ArriVent BioPharma, Inc. [ AVBP ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] 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 |
| Common Stock | 2025-12-10 |  | S |  | 555555<sup>(1)</sup> | D | $23.37 | 3929117<sup>(2)</sup> | I | See footnotes<sup>(3)(4)</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 |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) The securities reported herein were held by HACF, L.P., an exempted Cayman Islands limited partnership ("HACF"). HHLR (as defined below) acts as the sole management company of HACF.

(2) The securities reported herein are held by VSUM VI Holdings Limited ("VSUM VI"), VSUM VIII Holdings Limited ("VSUM VIII") and ARVT Holdings Limited ("ARVT"). VSUM VI is a wholly owned subsidiary of Hillhouse Venture Fund V, L.P. ("Venture Fund V"), VSUM VIII is a wholly owned subsidiary of Hillhouse Healthcare Fund, L.P. ("Healthcare Fund") and ARVT is a wholly owned subsidiary of Hillhouse Venture Fund VI, L.P. ("Venture Fund VI"). HIM (as defined below) acts as the sole management company of each of Venture Fund V, Healthcare Fund and Venture Fund VI.

(3) This statement is filed by (i) Hillhouse Investment Management, Ltd., an exempted Cayman Islands company ("HIM") and (ii) HHLR Advisors, Ltd., an exempted Cayman Islands company ("HHLR"). The foregoing persons are hereinafter sometimes each referred to as a "Reporting Person" and collectively referred to as the "Reporting Persons." HIM and HHLR are under common control and share certain policies, personnel and resources. Accordingly, HIM and HHLR are filing this Form 4 jointly.

(4) The filing of this statement shall not be deemed an admission that each of the Reporting Persons is the beneficial owner of the securities reported herein for purposes of Section 16 of the Securities Act of 1934, as amended, or otherwise. Each of the Reporting Persons expressly disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, if any.

**Signature:** Hillhouse Investment Management, Ltd., by /s/ Audrey Woon, Chief Compliance Officer  
**Date:** 2026-02-03

**Signature:** HHLR Advisors, Ltd. by /s/ Audrey Woon, Chief Compliance Officer  
**Date:** 2026-02-03

### 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.**