Bihua Chen - 22 Jan 2026 Form 3 Insider Report for Helix Acquisition Corp. III (HLXC)

Signature
/s/ Bihua Chen, Name: Bihua Chen
Issuer symbol
HLXC
Transactions as of
22 Jan 2026
Net transactions value
$0
Form type
3
Filing time
22 Jan 2026, 20:32:26 UTC
Previous filing
01 Oct 2025
Next filing
28 Jan 2026

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 STREET, 52ND FLOOR, BOSTON /s/ Bihua Chen, Name: Bihua Chen 22 Jan 2026 0001599214
Helix Holdings III LLC 10%+ Owner C/O CORMORANT ASSET MANAGEMENT LP, 200 CLARENDON STREET, 52ND FLOOR, BOSTON Helix Holdings III LLC, /s/ Bihua Chen, Managing Member 22 Jan 2026 0002105798

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
holding HLXC Class B Ordinary Shares 22 Jan 2026 Class A Ordinary Shares 3,533,750 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 The reporting person owns 30,000 Class B ordinary shares which will automatically convert into Class A ordinary shares 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 as described under the heading "Description of Securities--Founder Shares and Private Placement Shares" in the Issuer's registration statement on Form S-1 (File No. 333-291933) ("Registration Statement") and have no expiration date.
F2 The Class B ordinary shares beneficially owned by the Reporting Person include up to 468,750 Class B ordinary shares subject to forfeiture to the Issuer depending on the extent to which the underwriters' over-allotment option is exercised in full in connection with the Issuer's initial public offering of shares, as described in the Registration Statement.
F3 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.

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.