|4/AJan 28, 8:36 PM ET

Chen Bihua 4/A

4/A · Helix Acquisition Corp. III · Filed Jan 28, 2026

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Helix Acquisition (HLXC) 10% Owner Bihua Chen Buys Stock

What Happened
Bihua (Bihua) Chen, reported as a 10% owner related to Helix Holdings III LLC and affiliated Cormorant funds, acquired a total of 2,016,250 Helix Acquisition Corp. III ordinary shares in late January 2026. Transactions shown on the amended Form 4: an 800,000-share private/open-market purchase on 2026-01-26 at $10.00 per share ($8,000,000), a 497,500-share grant/award on 2026-01-26 at $10.00 per share (reported value $4,975,000), and a 718,750-share issuance on 2026-01-22 via a share capitalization (Class B ordinary shares; derivative, no cash price listed). The two $10.00 transactions total $12,975,000 in cash consideration; the 718,750 Class B shares were issued via capitalization and are convertible to Class A shares per the registration statement.

Key Details

  • Transaction dates/prices:
    • Jan 26, 2026 — Open market/private purchase (P): 800,000 shares @ $10.00 = $8,000,000.
    • Jan 26, 2026 — Grant/award (A): 497,500 shares @ $10.00 = $4,975,000.
    • Jan 22, 2026 — Share capitalization (J): 718,750 Class B ordinary shares issued to Helix Holdings III LLC (derivative; N/A price).
  • Total shares acquired: 2,016,250. Total cash paid for purchases: $12,975,000.
  • Footnotes/ownership: Helix Holdings III LLC is the record holder. Cormorant Fund VI and Cormorant Global Healthcare Master Fund, LP own Helix Holdings III LLC; Ms. Chen is managing member of those funds and has voting and investment discretion but disclaims beneficial ownership except to the extent of any pecuniary interest (see footnotes F1, F3).
  • Class B shares: The 718,750 Class B ordinary shares convert one-for-one into Class A shares on consummation of a business combination (see F4, F5).
  • Filing status: This is an amended Form 4 (amends the Jan 26 filing to correct share counts to include IPO purchases by Cormorant Global Healthcare Master Fund, LP per the S‑1). The original report and this amendment were filed within the typical Form 4 reporting window.

Context

  • This activity is reported by a 10% owner through affiliated entities, not a routine executive sale—ownership is held of record through investment vehicles and Helix Holdings III LLC, so ownership/intent should be interpreted as institutional/fund-related rather than a personal executive trade.
  • The 718,750 Class B shares are derivative/convertible founder/private placement-style shares as described in the company’s registration statement; they are not option exercises or cash purchases.
  • No sales were reported; purchases and an issuance were disclosed. The amendment corrects previously reported quantities and incorporates IPO-related purchases by a fund.

Insider Transaction Report

Form 4/AAmended
Period: 2026-01-26
Chen Bihua
DirectorChairperson and CEO10% Owner
Transactions
  • Award

    Class A Ordinary Shares

    [F1]
    2026-01-26$10.00/sh+497,500$4,975,000497,500 total(indirect: See Footnote)
  • Purchase

    Class A Ordinary Shares

    [F2][F3]
    2026-01-26$10.00/sh+800,000$8,000,000800,000 total(indirect: See Footnote)
  • Other

    Class B Ordinary Shares

    [F4][F5][F1]
    2026-01-22+718,7504,252,500 total(indirect: See Footnote)
    Class A Ordinary Shares (718,750 underlying)
Footnotes (5)
  • [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, 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 Global Healthcare Master Fund, LP 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]This form amends a Form 4 previously filed for the Reporting Person on January 26, 2026 to correct the number of shares that should have been reported on such date, which now includes shares purchased by Cormorant Global Healthcare Master Fund, LP in the Issuer's initial public offering, as described in further detail in the Issuer's registration statement on Form S-1 (File No. 333-291933) ("Registration Statement").
  • [F3]Cormorant Global Healthcare Master Fund, LP is the record holder of such securities. Ms. Chen is the managing member of Cormorant Global Healthcare Master Fund, LP and has voting and investment discretion with respect to the ordinary shares of record held thereby. Ms. Chen disclaims any beneficial ownership of the securities held by Cormorant Global Healthcare Master Fund, LP other than to the extent of any pecuniary interest she may have therein, directly or indirectly.
  • [F4]As described in the 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.
  • [F5]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.

Documents

2 files