Form
SCHEDULE 13D/A
Active or control-oriented beneficial ownership filing.
Helix Holdings II LLC - 28 Feb 2025 SCHEDULE 13D/A Report for Helix Acquisition Corp. II Class A ordinary shares, $0.0001 par value per share (HLXB)
- Filing manager
- Helix Holdings II LLC
- Reporting owner
- Bihua Chen
- Beneficially owned shares
- 7,389,000 shares
- Large-stake signal
-
Ownership
32%Beneficial ownership of this reported class.
Shares
7,389,000 sharesShares beneficially owned as disclosed.
Event date
28 Feb 2025Date tied to the ownership event or amendment.
Accepted by SEC
04 Mar 2025EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Class ownership
- 32%
- Symbol
- HLXB
- Shares outstanding
- 23,390,313 shares
- SEC form
- SCHEDULE 13D/A
- Accepted by SEC
- 04 Mar 2025, 18:43:35 UTC
- Event date
- 28 Feb 2025
- Source filing
- View source filing
Ownership signal
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Subject security
Names, identifiers, and filing context for this profile.
2 source fields
Source evidence
Original filing metadata and source links for verification.
4 source fields
Key filing fact
Helix Holdings II LLC disclosed 32% ownership in Helix Acquisition Corp. II Class A ordinary shares, $0.0001 par value per share (HLXB) on 28 Feb 2025.
Key facts
- Helix Holdings II LLC filed SCHEDULE 13D/A for Helix Acquisition Corp. II Class A ordinary shares, $0.0001 par value per share (HLXB).
- Disclosed ownership: 32%.
- Date of event: 28 Feb 2025.
Change
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 04 Mar 2025, 18:43.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
View source filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (4)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares owned | Sole voting power | Shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Helix Holdings II LLC | 21% | 4,989,000 | 4,989,000 | 0 | /s/ Bihua Chen | Bihua Chen, Managing Member | 0001869101 |
| Cormorant Private Healthcare Fund III, LP | 7.6% | 1,427,040 | 1,427,040 | 0 | /s/ Bihua Chen | Bihua Chen, Managing Member of Cormorant Private Healthcare GP III, LLC, General Partner of Cormorant Private Healthcare Fund III, LP | 0001817320 |
| Cormorant Private Healthcare GP III, LLC | 7.6% | 1,427,040 | 1,427,040 | 0 | /s/ Bihua Chen | Bihua Chen, Managing Member | |
| Bihua Chen | 32% | 7,389,000 | 7,389,000 | 0 | /s/ Bihua Chen | Bihua Chen, Self | 0001599214 |
CIK / CUSIP context first