Chen Bihua, Chairperson and CEO, bought Helix Acquisition Corp. III ($HLXC) shares once on the open market in the last 365 days for a total of 8 million dollars, with the latest purchase on January 26, 2026. This ranks 127th among 4,983 insiders, above the average of 1.5 million dollars per buyer across 3.29 transactions. Bihua also sold MoonLake Immunotherapeutics ($MLTX) shares five times for 46.9 million dollars total, most recently on September 30, 2025. These sales rank 335th among 11,678 insiders, below the average of 8.6 million dollars across 6.37 transactions.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 26, 2026 | Helix Acquisition Corp. III | $HLXC | Chen Bihua | Chairperson and CEO | P | Class A Ordinary Shares | 800000 | $10.00 | 800,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 26, 2026 | Helix Acquisition Corp. III | $HLXC | Chen Bihua | Chairperson and CEO | A | Class A Ordinary Shares | 497500 | $10.00 | 497,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 22, 2026 | Helix Acquisition Corp. III | $HLXC | Chen Bihua | Chairperson and CEO | J | Class B Ordinary Shares | 718750 | $0.00 | 4,252,500.0000 | 0 | 20.34% | 0.00% |
| Jan. 26, 2026 | Helix Acquisition Corp. III | $HLXC | Chen Bihua | Chairperson and CEO | A | Class A Ordinary Shares | 497500 | $10.00 | 497,500.0000 | 0 | 9999.99% | 0.00% |
| Jan. 22, 2026 | Helix Acquisition Corp. III | $HLXC | Chen Bihua | Chairperson and CEO | J | Class B Ordinary Shares | 718750 | $0.00 | 4,252,500.0000 | 0 | 20.34% | 0.00% |
| Sept. 29, 2025 | MoonLake Immunotherapeutics | $MLTX | Chen Bihua | Not found | S | Class A Ordinary Shares | 232460 | $8.40 | 8,190,943.0000 | 62,870,237 | 2.76% | 0.37% |
| Sept. 30, 2025 | MoonLake Immunotherapeutics | $MLTX | Chen Bihua | Not found | S | Class A Ordinary Shares | 5827 | $6.96 | 1,994,173.0000 | 62,870,237 | 0.29% | 0.01% |
| Sept. 29, 2025 | MoonLake Immunotherapeutics | $MLTX | Chen Bihua | Not found | S | Class A Ordinary Shares | 2800000 | $6.61 | 2,000,000.0000 | 62,870,237 | 58.33% | 4.45% |
| Sept. 29, 2025 | MoonLake Immunotherapeutics | $MLTX | Chen Bihua | Not found | S | Class A Ordinary Shares | 3390943 | $7.58 | 4,800,000.0000 | 62,870,237 | 41.40% | 5.39% |
| Sept. 29, 2025 | MoonLake Immunotherapeutics | $MLTX | Chen Bihua | Not found | S | Class A Ordinary Shares | 70748 | $9.38 | 8,423,403.0000 | 62,870,237 | 0.83% | 0.11% |
| Aug. 11, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | Director | A | Common Stock | 1762760 | $0.00 | 17,878,594.0000 | 0 | 10.94% | 0.00% |
| Aug. 11, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | Director | A | Common Stock | 284571 | $0.00 | 17,878,594.0000 | 0 | 1.62% | 0.00% |
| Aug. 11, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | Director | D | Class B ordinary shares | 307874 | $0.00 | 4,172,126.0000 | 0 | 6.87% | 0.00% |
| Aug. 11, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | Director | M | Class B ordinary shares | 4172126 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 11, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | Director | D | Common Stock | 152940 | $0.00 | 17,878,594.0000 | 0 | 0.85% | 0.00% |
| Aug. 11, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | Director | M | Common Stock | 4172126 | $0.00 | 18,031,534.0000 | 0 | 30.10% | 0.00% |
| Aug. 11, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | Director | A | Common Stock | 760496 | $10.72 | 17,878,594.0000 | 0 | 4.44% | 0.00% |
| Aug. 11, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | Director | A | Common Stock | 639110 | $10.72 | 16,115,834.0000 | 0 | 4.13% | 0.00% |
| Aug. 11, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | Director | A | Common Stock | 5598425 | $10.72 | 17,594,023.0000 | 0 | 46.67% | 0.00% |
| Aug. 11, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | Director | A | Common Stock | 1905046 | $0.00 | 17,878,594.0000 | 0 | 11.93% | 0.00% |
| June 11, 2025 | Biomea Fusion, Inc. | $BMEA | Chen Bihua | Not found | A | Stock Option (Right to Buy) | 91970 | $0.00 | 91,970.0000 | 37,572,250 | 9999.99% | 0.24% |
| Feb. 8, 2025 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | CEO and Chairperson | J | Class B Ordinary Shares | 30000 | $0.00 | 4,480,000.0000 | 0 | 0.67% | 0.00% |
| June 12, 2024 | Biomea Fusion, Inc. | $BMEA | Chen Bihua | Not found | A | Stock Option (right to buy) | 51025 | $0.00 | 59,818.0250 | 0 | 580.29% | 0.00% |
| Feb. 13, 2024 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | CEO and Chairperson | P | Class A Ordinary Shares | 69360 | $10.00 | 69,360.0000 | 0 | 9999.99% | 0.00% |
| Feb. 13, 2024 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | CEO and Chairperson | P | Class A Ordinary Shares | 903600 | $10.00 | 903,600.0000 | 0 | 9999.99% | 0.00% |
| Feb. 13, 2024 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | CEO and Chairperson | P | Class A Ordinary Shares | 1427040 | $10.00 | 1,427,040.0000 | 0 | 9999.99% | 0.00% |
| Feb. 13, 2024 | BridgeBio Oncology Therapeutics, Inc. | $BBOT | Chen Bihua | CEO and Chairperson | A | Class A Ordinary Shares | 509000 | $10.00 | 509,000.0000 | 0 | 9999.99% | 0.00% |
| June 22, 2023 | Erasca, Inc. | $ERAS | Chen Bihua | Not found | A | Stock Option (right to buy) | 60000 | $0.00 | 266,666.0000 | 0 | 29.03% | 0.00% |
| June 14, 2023 | Biomea Fusion, Inc. | $BMEA | Chen Bihua | Not found | A | Stock Option (right to buy) | 6989 | $0.00 | 59,767.0000 | 0 | 13.24% | 0.00% |
| March 30, 2023 | Biomea Fusion, Inc. | $BMEA | Chen Bihua | Not found | P | Common Stock | 400000 | $30.00 | 3,570,872.0000 | 0 | 12.61% | 0.00% |