Insider trades › Bihua Chen
Bihua Chen
A corporate insider: an officer, director or owner of more than 10% of a company. Insiders report their trades to the SEC on Form 4The form insiders use to report each purchase or sale of their company's stock. It is due within two business days of the trade. · Last filing Aug 6, 2026
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Using 13F.ai, list Bihua Chen's open-market buys and sells across companies in the last two years, with the Form 4 links.
Using 13F.ai, how did the stocks Bihua Chen bought perform after the purchase compared with the S&P 500?
Using 13F.ai, are other insiders at the same companies buying or selling at the same time as Bihua Chen?
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Buying and selling by quarter
Dollars bought and sold on the open market over the last two years.
Bought Sold
By trade date, using the shares and price reported for each trade. Stock grants, option exercises and shares withheld for tax are left out.
Roles
The companies where this person reports as an insider, and their position at each, most recent first.
| BLSM BlossomHill Therapeutics, Inc. | Director, 10% owner | Aug 6, 2026 |
| BBOT BridgeBio Oncology Therapeutics, Inc. | CEO and Chairperson, Director, 10% owner | Jul 6, 2026 |
| HLXC Helix Acquisition Corp. III | Chairperson and CEO, Director, 10% owner | Jan 28, 2026 |
| CRBP Corbus Pharmaceuticals Holdings, Inc. | 10% owner | Dec 15, 2025 |
| BMEA Biomea Fusion, Inc. | Director, 10% owner | Aug 1, 2025 |
| AARD Aardvark Therapeutics, Inc. | — | Feb 19, 2025 |
| DRUG Bright Minds Biosciences Inc. | 10% owner | Oct 17, 2024 |
| BIOA BioAge Labs, Inc. | — | Oct 1, 2024 |
Roles come from the filings themselves and can change over time.
Latest open-market trades
Purchases and sales at every company, most recent filing first.
| How the stock has done since the trade date, measured against the S&P 500 over the same days. It describes the stock, not the trader's actual gain or loss. | Filing | ||||||
|---|---|---|---|---|---|---|---|
| Jan 26, 2026 | HLXC Helix Acquisition Corp. III | Buy | 800,000 | $10.00 | $8.0M | -8.2% | Form 4/A ↗ |
| Dec 11, 2025 | CRBP Corbus Pharmaceuticals Holdings, Inc. | Sale | 30,029 | $11.46 | $344.1K | -74.4% | Form 4 ↗ |
| Feb 14, 2025 | AARD Aardvark Therapeutics, Inc. | Buy | 187,500 | $16.00 | $3.0M | -113.7% | Form 4 ↗ |
| Sep 27, 2024 | BIOA BioAge Labs, Inc. | Buy | 450,000 | $18.00 | $8.1M | -105.6% | Form 4 ↗ |
Each row links to its Form 4. Since trade compares the stock’s move from the close on the trade date (or the next trading day) to its latest close with the S&P 500 over the same days, adjusted for splits and excluding dividends. It describes the stock, not what the trader made: we don’t know their purchase price, position size or later sales. A dash means the trade isn’t matched to a listed stock, or there is no closing price after it yet.
When several people report on the same filing, we list it under the first one named, so trades by someone usually listed second may be missing here. Information, not investment advice: see the disclaimer.