Holder evidence
46
SEC ownership of Helix Acquisition Corp. III
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002099656.
Lead holder
Helix Holdings III LLC
13D/G signal
Helix Holdings III LLC
Latest evidence
31 Mar 2026
- CIK
- 0002099656
- Symbol
- HLXC on Nasdaq
- Location
- Boston, MA
- SEC evidence mix
- 13D/G, 13F, and 3/4/5
- Lead holder
- Helix Holdings III LLC
- Latest large-stake holder
- Helix Holdings III LLC
- Latest evidence date
- 31 Mar 2026
Issuer identity
Ownership snapshot
Ownership snapshot
Top shareholders of Helix Acquisition Corp. III (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Lead holder
Helix Holdings III LLC
13D/G signal
Helix Holdings III LLC
Evidence rows
46
Latest as of
31 Mar 2026
13D/G
13F
3/4/5
Lead comparable stake: 25%
13D/G row: Helix Holdings III LLC
Showing 1-8 of 46 holder rows.
Rank 1 holder
Helix Holdings III LLC
13D/G
- Ownership
- 25%
- Position
- —
Rank 2 holder
Nantahala Capital Management, LLC
13D/G
13F
- Ownership
- 8.3%
- Position
- $12.7M
Rank 3 holder
Affinity Asset Advisors, LLC
13D/G
13F
- Ownership
- 7%
- Position
- $12.7M
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Helix Holdings III LLC |
13D/G
Bihua Chen
|
25%
|
—
5,550,000 shares
|
$0 | 26 Jan 2026 |
| Nantahala Capital Management, LLC |
13D/G
13F
Company
|
8.3%
|
$12,700,000
1,250,000 shares
|
$0 | 31 Mar 2026 |
| Affinity Asset Advisors, LLC |
13D/G
13F
Company
|
7%
|
$12,700,000
1,250,000 shares
|
$0 | 31 Mar 2026 |
| RA CAPITAL MANAGEMENT, L.P. |
13F
13D/G
Company
|
7%
from 13D/G
|
$12,700,000
1,250,000 shares
|
— | 31 Mar 2026 |
| SILVERARC CAPITAL MANAGEMENT, LLC |
13F
13D/G
Company
|
6.8%
from 13D/G
|
$12,283,298
1,208,986 shares
|
— | 31 Mar 2026 |
| ADAR1 Capital Management, LLC |
13F
13D/G
Company
|
5.6%
from 13D/G
|
$10,300,000
1,000,000 shares
|
— | 31 Mar 2026 |
| INTEGRATED CORE STRATEGIES (US) LLC |
13D/G
Millennium Management LLC
|
4.8%
|
$8,694,125
855,721 shares
|
-$2,466,990 | 31 Mar 2026 |
| Cormorant Asset Management, LP |
13F
Company
|
7.3%
|
$13,182,600
1,297,500 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 30 May 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-5 of 5 reporting-owner rows connected to Helix Acquisition Corp. III. Open a relationship link for the CIK-to-CIK filing trail.
Rows
5
Lead holder
Bihua Chen
Net 12M change
$0
Latest report
26 Jan 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Bihua Chen | Chairperson and CEO, Director, 10%+ Owner | $8,000,000 | Filing P/S | 26 Jan 2026 | ||
| Caleb Tripp | Cfo & Coo | Mixed | 22 Jan 2026 | |||
| Nebojsa Obradovic | Chief Legal Officer | Mixed | 22 Jan 2026 | |||
| Mark C. McKenna | Director | Mixed | 22 Jan 2026 | |||
| John P. Schmid | Director | Mixed | 22 Jan 2026 |
Recent insider transactions for Helix Acquisition Corp. III
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Reported value | Reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Bihua Chen | HLXC | Class A Ordinary Shares | Purchase | 800,000 | 800,000 | 26 Jan 2026 | See Footnote | |||
| Bihua Chen | HLXC | Class A Ordinary Shares | Award | 497,500 | 497,500 | 26 Jan 2026 | See Footnote | |||
| Bihua Chen | HLXC | Class B Ordinary Shares | Other | 20.3% | 718,750 | 4,252,500 | 22 Jan 2026 | See Footnote |
* indicates a reported price that failed the local validity check.