# EDGAR Filing Document

**Accession Number:** 0001599214
**File Stem:** 0001213900-26-007772
**Filing Date:** 2026-1
**Character Count:** 10637
**Document Hash:** 89ca9c0e713a4a6cdee47a20e9c181ef
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-007772.hdr.sgml**: 20260126

**ACCESSION NUMBER**: 0001213900-26-007772

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260126

**FILED AS OF DATE**: 20260126

**DATE AS OF CHANGE**: 20260126

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Chen Bihua
- **CENTRAL INDEX KEY:** 0001599214

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43069
- **FILM NUMBER:** 26561251

**MAIL ADDRESS:**
- **STREET 1:** C/O CORMORANT ASSET MANAGEMENT, LP
- **STREET 2:** 200 CLARENDON STREET, 52ND FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Helix Holdings III LLC
- **CENTRAL INDEX KEY:** 0002105798

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

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43069
- **FILM NUMBER:** 26561250

**BUSINESS ADDRESS:**
- **STREET 1:** C/O CORMORANT ASSET MANAGEMENT LP
- **STREET 2:** 200 CLARENDON STREET, 52ND FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116
- **BUSINESS PHONE:** (857) 702-0370

**MAIL ADDRESS:**
- **STREET 1:** C/O CORMORANT ASSET MANAGEMENT LP
- **STREET 2:** 200 CLARENDON STREET, 52ND FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Helix Acquisition Corp. III
- **CENTRAL INDEX KEY:** 0002099656
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 981895727
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** C/O CORMORANT ASSET MANAGEMENT LP
- **STREET 2:** 200 CLARENDON STREET, 52ND FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116
- **BUSINESS PHONE:** (857) 702-0370

**MAIL ADDRESS:**
- **STREET 1:** C/O CORMORANT ASSET MANAGEMENT LP
- **STREET 2:** 200 CLARENDON STREET, 52ND FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116

## Exhibit 99.1

**Exhibit 99.1**

---

| | |
|:---|:---|
| Joint Filer Information | Joint Filer Information |
| Name of Joint Filer: | Helix Holdings III LLC |
| Address of Joint Filer: | c/o Cormorant Asset Management, LP<br> 200 Clarendon Street, 52<sup>nd</sup> Floor<br> Boston, MA 02116 |
| Relationship of Joint Filer to Issuer: | 10% Owner, Director |
| Issuer Name and Ticker or Trading Symbol: | Helix Acquisition Corp. III [HLXC] |
| Date of Event Requiring Statement: |  |
| &nbsp;&nbsp;&nbsp;(Month/Day/Year): | 01/26/2026 |
| Name of Joint Filer: | Bihua Chen |
| Address of Joint Filer: | c/o Cormorant Asset Management, LP<br> 200 Clarendon Street, 52<sup>nd</sup> Floor<br> Boston, MA 02116 |
| Relationship of Joint Filer to Issuer: | 10% Owner, Director, Officer (Chairperson and CEO) |
| Issuer Name and Ticker or Trading Symbol: | Helix Acquisition Corp. III [HLXC] |
| Date of Event Requiring Statement: |  |
| &nbsp;&nbsp;&nbsp;(Month/Day/Year): | 01/26/2026 |

---

### 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>Chen Bihua<br><sub>(Last) (First) (Middle)</sub><br>C/O CORMORANT ASSET MANAGEMENT, LP<br>200 CLARENDON ST, 52ND FLOOR<br><sub>(Street)</sub><br>BOSTON, MA 02116<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-01-26 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chairperson and CEO_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Helix Acquisition Corp. III [ HLXC ] | **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>Helix Holdings III LLC<br><sub>(Last) (First) (Middle)</sub><br>C/O CORMORANT ASSET MANAGEMENT LP<br>200 CLARENDON STREET, 52ND FLOOR<br><sub>(Street)</sub><br>BOSTON, MA 02116<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-01-26 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Helix Acquisition Corp. III [ HLXC ] | **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 |
| Class A Ordinary Shares | 2026-01-26 |  | A |  | 497500 | A | $10 | 497500 | I<sup>(1)</sup> | See Footnote<sup>(1)</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 |
| Class B Ordinary Shares<sup>(2)</sup> | <sup>(2)</sup> | 2026-01-22 |  | J<sup>(3)</sup> |  | 718750 |  | <sup>(2)</sup> | <sup>(2)</sup> | Class A Ordinary Shares | 718750 | <sup>(2)(3)</sup> | 4252500 | I<sup>(1)</sup> | See Footnote<sup>(1)</sup> |

---

### Footnotes:

(1) Helix Holdings III LLC is the record holder of the securities reported herein. Cormorant Private Healthcare Fund VI, LP ("Cormorant Fund VI") and Cormorant Global Healthcare Master Fund ("Cormorant Master Fund"), LP, together own 100% of the membership interests in Helix Holdings III LLC. Bihua Chen is the managing member of each of Cormorant Fund VI and Cormorant Master Fund and has voting and investment discretion with respect to the ordinary shares held of record by Helix Holdings III LLC. Bihua Chen disclaims any beneficial ownership of the securities held by Helix Holdings III LLC other than to the extent of any pecuniary interest she may have therein, directly or indirectly.

(2) As described in the Issuer's registration statement on Form S-1 (File No. 333-291933) ("Registration Statement"), under the heading "Description of Securities--Founder Shares and Private Placement Shares", the terms of the Class B ordinary shares, par value $0.0001 per share, provided at issuance that they would automatically convert into Class A ordinary shares, par value $0.0001 per share, concurrently with or immediately following the consummation of the Issuer's initial business combination or earlier at the option of the holder on a one-for-one basis, subject to adjustment for share sub-divisions, share capitalizations, reorganizations, recapitalizations and the like, and certain anti-dilution rights and have no expiration date.

(3) On January 22, 2026, the Issuer effected a share capitalization with respect to the Class B ordinary shares, resulting in the issue and allotment of 718,750 Class B ordinary shares to Helix Holdings III LLC.

**Remarks:**
Helix Holdings III LLC may be deemed a director by deputization by virtue of its representation on the board of directors of the Issuer. See Exhibit 99.1 - Joint Filer Information, which is incorporated herein by reference and describes in further detail the relationships of the Reporting Persons to the Issuer.

**Signature:** /s/ Bihua Chen, Name: Bihua Chen  
**Date:** 2026-01-26

**Signature:** /s/ Helix Holdings III LLC, by Bihua Chen, Managing Member  
**Date:** 2026-01-26

### 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.**