Bihua Chen - 26 Jan 2026 Form 4 Insider Report for Helix Acquisition Corp. III (HLXC)

Role: Chairperson and CEO, Director, 10%+ Owner
Signature: /s/ Bihua Chen, Name: Bihua Chen
Issuer symbol: HLXC
Transactions as of: 26 Jan 2026
Net transactions value: +$4,975,000
Form type: 4
Filing time: 26 Jan 2026, 17:02:48 UTC
Previous filing: 22 Jan 2026
SEC: View on sec.gov

Reporting Owners (2)

Name	Relationship	Address	Signature	Signature date	CIK
Chen Bihua	Chairperson and CEO, Director, 10%+ Owner	C/O CORMORANT ASSET MANAGEMENT, LP, 200 CLARENDON ST, 52ND FLOOR, BOSTON	/s/ Bihua Chen, Name: Bihua Chen	26 Jan 2026	0001599214
Helix Holdings III LLC	Other*, 10%+ Owner	C/O CORMORANT ASSET MANAGEMENT LP, 200 CLARENDON STREET, 52ND FLOOR, BOSTON	/s/ Helix Holdings III LLC, by Bihua Chen, Managing Member	26 Jan 2026	0002105798

This filing has been restated, see here for the amended filing

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	HLXC	Class A Ordinary Shares	Award	$4,975,000	+497,500		$10.00	497,500	26 Jan 2026	See Footnote	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	HLXC	Class B Ordinary Shares	Other		+718,750	+20%		4,252,500	22 Jan 2026	Class A Ordinary Shares	718,750		See Footnote	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	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.
F3	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.