🕵️ Helix Acquisition Corp. III ($HLXC)
SEC insider & ownership activity, last 12 months · CIK 2099656 · every row links its SEC filing
Over the last 12 months insiders bought $8.0M with no open-market selling against it. Chen Bihua bought $8.0M in discretionary trades (Jan). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $8.0M (1 lots) · 0 sellers, $0 (0 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Chen Bihua | 1 | $8.0M | 0 | – | Jan 26, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Bihua Chen | 25.2% | 13D | Jan 26, 2026 | filing ↗ | |
| Helix Holdings III LLC | 21.5% | 13D | Jan 26, 2026 | filing ↗ | |
| Nantahala Capital Management, LLC | 8.3% | 13G | May 15, 2026 | filing ↗ | |
| Wilmot B. Harkey | 8.3% | 13G | May 15, 2026 | filing ↗ | |
| Daniel Mack | 8.3% | 13G | May 15, 2026 | filing ↗ | |
| RA Capital Management, L.P. | 7.0% | 13G | Feb 2, 2026 | filing ↗ | |
| Peter Kolchinsky | 7.0% | 13G | Feb 2, 2026 | filing ↗ | |
| Rajeev Shah | 7.0% | 13G | Feb 2, 2026 | filing ↗ | |
| RA Capital Healthcare Fund, L.P. | 7.0% | 13G | Feb 2, 2026 | filing ↗ | |
| Affinity Asset Advisors, LLC | 7.0% | 13G | May 14, 2026 | filing ↗ | |
| Michael Cho | 7.0% | 13G | May 14, 2026 | filing ↗ | |
| Balyasny Asset Management L.P. | 7.0% | 13G | May 15, 2026 | filing ↗ | |
| BAM GP LLC | 7.0% | 13G | May 15, 2026 | filing ↗ | |
| Balyasny Asset Management Holdings LP | 7.0% | 13G | May 15, 2026 | filing ↗ | |
| Dames GP LLC | 7.0% | 13G | May 15, 2026 | filing ↗ | |
| Dmitry Balyasny | 7.0% | 13G | May 15, 2026 | filing ↗ | |
| Silverarc Capital Management, LLC | 6.8% | 13G | May 13, 2026 | filing ↗ | |
| Devesh S. Gandhi | 6.8% | 13G | May 13, 2026 | filing ↗ | |
| ADAR1 Capital Management, LLC | 5.6% | 13G | May 15, 2026 | filing ↗ | |
| Daniel Schneeberger | 5.6% | 13G | May 15, 2026 | filing ↗ |
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Other events (8.01) | Jan 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 26, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 22, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Jan 22, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 22, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Jan 22, 2026 | filing ↗ |
| Other events (8.01) | Jan 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 22, 2026 | filing ↗ |