Bihua Chen - Net Worth and Insider Trading
Bihua Chen Net Worth
The estimated net worth of Bihua Chen is at least $614 Million dollars as of 2026-09-11. Bihua Chen is the Former 10% Owner of MoonLake Immunotherapeutics and owns about 25,408,519 shares of MoonLake Immunotherapeutics (MLTX) stock worth over $335 Million. Bihua Chen is the Director of Erasca Inc and owns about 10,813,246 shares of Erasca Inc (ERAS) stock worth over $173 Million. Bihua Chen is also the Director, 10% Owner of BlossomHill Therapeutics Inc and owns about 3,614,034 shares of BlossomHill Therapeutics Inc (BLSM) stock worth over $78 Million. Besides these, Bihua Chen also holds Helix Acquisition Corp III (HLXC) , Helix Acquisition Corp II (HLXB) , Helix Acquisition Corp (HLXA) . Details can be seen in Bihua Chen's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that Bihua Chen has not made any transactions after 2026-08-10 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Bihua Chen
Bihua Chen Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Bihua Chen owns 47 companies in total, including Helix Acquisition Corp (HLXA) , Akouos Inc (AKUS) , and Avidity Biosciences Inc (RNAM) among others .
Click here to see the complete history of Bihua Chen’s form 4 insider trades.
Insider Ownership Summary of Bihua Chen
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| HLXA | Helix Acquisition Corp | 2020-10-22 | director & 10 percent owner & CEO and Chairman |
| AKUS | Akouos Inc | 2020-06-25 | director & 10 percent owner |
| RNAM | Avidity Biosciences Inc | 2020-06-11 | director & 10 percent owner |
| 2019-04-22 | director & 10 percent owner | ||
| 2018-10-30 | director & 10 percent owner | ||
| 2018-07-18 | director & 10 percent owner | ||
| 2018-06-20 | director & 10 percent owner | ||
| 2018-05-23 | director & 10 percent owner | ||
| 2017-12-14 | director & 10 percent owner | ||
| 2017-11-08 | director & 10 percent owner | ||
| 2016-06-01 | director & 10 percent owner | ||
| 2014-08-15 | director & 10 percent owner | ||
| 2016-11-03 | director & 10 percent owner | ||
| 2020-10-29 | director & 10 percent owner | ||
| 2021-03-11 | director & 10 percent owner | ||
| 2021-04-22 | director & 10 percent owner | ||
| 2020-11-18 | director & 10 percent owner | ||
| 2022-12-20 | director | ||
| 2021-10-07 | 10 percent owner | ||
| 2021-06-24 | 10 percent owner | ||
| 2021-07-28 | 10 percent owner | ||
| 2023-04-20 | 10 percent owner | ||
| 2021-06-29 | 10 percent owner | ||
| 2021-03-25 | director & 10 percent owner | ||
| 2025-09-30 | 10 percent owner | ||
| 2021-06-23 | director & 10 percent owner | ||
| 2020-12-15 | director & 10 percent owner | ||
| 2022-01-06 | 10 percent owner | ||
| 2023-03-30 | director & 10 percent owner | ||
| 2021-06-16 | director & 10 percent owner | ||
| 2021-10-20 | 10 percent owner | ||
| 2021-09-14 | 10 percent owner | ||
| 2016-11-03 | director & 10 percent owner | ||
| 2023-03-03 | 10 percent owner | ||
| 2023-05-29 | other: See below | ||
| 2023-05-29 | other: See below | ||
| 2023-10-23 | 10 percent owner | ||
| 2024-10-04 | 10 percent owner | ||
| 2023-12-04 | 10 percent owner | ||
| 2024-01-26 | 10 percent owner | ||
| 2024-09-25 | 10 percent owner | ||
| 2025-02-12 | 10 percent owner | ||
| 2021-06-29 | 10 percent owner | ||
| 2024-10-15 | 10 percent owner | ||
| 2024-02-08 | director & 10 percent owner | ||
| 2026-01-22 | director & 10 percent owner & Chairperson and CEO | ||
| 2026-08-06 | director & 10 percent owner |
Bihua Chen Latest Holdings Summary
Bihua Chen currently owns a total of 6 stocks. Among these stocks, Bihua Chen owns 25,408,519 shares of MoonLake Immunotherapeutics (MLTX) as of September 30, 2025, with a value of $335 Million and a weighting of 54.46%. Bihua Chen owns 10,813,246 shares of Erasca Inc (ERAS) as of December 13, 2022, with a value of $173 Million and a weighting of 28.23%. Bihua Chen also owns 3,614,034 shares of BlossomHill Therapeutics Inc (BLSM) as of August 10, 2026, with a value of $78 Million and a weighting of 12.65%. The other 3 stocks Helix Acquisition Corp III (HLXC) , Helix Acquisition Corp II (HLXB) , Helix Acquisition Corp (HLXA) have a combined weighting of 4.67% among all his current holdings.
Latest Holdings of Bihua Chen
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| MLTX | MoonLake Immunotherapeutics | 2025-09-30 | 25,408,519 | 13.17 | 334,630,195 |
| ERAS | Erasca Inc | 2022-12-13 | 10,813,246 | 16.04 | 173,444,466 |
| BLSM | BlossomHill Therapeutics Inc | 2026-08-10 | 3,614,034 | 21.51 | 77,737,871 |
| HLXC | Helix Acquisition Corp III | 2026-01-26 | 1,297,500 | 10.80 | 14,013,000 |
| HLXB | Helix Acquisition Corp II | 2024-02-13 | 903,600 | 9.93 | 8,972,748 |
| HLXA | Helix Acquisition Corp | 2020-10-22 | 430,000 | 13.25 | 5,697,500 |
Holding Weightings of Bihua Chen
Bihua Chen Form 4 Trading Tracker
According to the SEC Form 4 filings, Bihua Chen has made a total of 6 transactions in MoonLake Immunotherapeutics (MLTX) over the past 5 years, including 5 buys and 1 sells. The most-recent trade in MoonLake Immunotherapeutics is the sale of 6,499,978 shares on September 30, 2025, which brought Bihua Chen around $47 Million.
According to the SEC Form 4 filings, Bihua Chen has made a total of 2 transactions in Erasca Inc (ERAS) over the past 5 years, including 2 buys and 0 sells. The most-recent trade in Erasca Inc is the acquisition of 307,692 shares on December 13, 2022, which cost Bihua Chen around $2 Million.
According to the SEC Form 4 filings, Bihua Chen has made a total of 1 transactions in BlossomHill Therapeutics Inc (BLSM) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in BlossomHill Therapeutics Inc is the acquisition of 312,500 shares on August 10, 2026, which cost Bihua Chen around $5 Million.
More details on Bihua Chen's insider transactions can be found in the Insider Trading History of Bihua Chen table.Insider Trading History of Bihua Chen
* The information on this page (including Insider Trading Shares, Share Changes, Cost, etc.) is sourced exclusively from Form 4 filings and does not incorporate any data from 13F or 13D/G filings. As a result, it may differ from the values shown on the Guru page.
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Bihua Chen Trading Performance
GuruFocus tracks the stock performance after each of Bihua Chen's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Bihua Chen is -4.67%. GuruFocus also compares Bihua Chen's trading performance to market benchmark return within the same time period. The performance of stocks bought by Bihua Chen within 3 months outperforms 2 times out of 10 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how Bihua Chen's insider trading performs compared to the benchmark.
Bihua Chen Ownership Network
Ownership Network List of Bihua Chen
Ownership Network Relation of Bihua Chen

Bihua Chen Owned Company Details
What does Helix Acquisition Corp do?
Who are the key executives at Helix Acquisition Corp?
Bihua Chen is the director & 10 percent owner & CEO and Chairman of Helix Acquisition Corp. Other key executives at Helix Acquisition Corp include director & 10 percent owner Helix Holdings Llc , and Chief Financial Officer Jay Scollins .
Helix Acquisition Corp (HLXA) Insider Trades Summary
In summary, during the past 3 months, insiders sold 0 shares of Helix Acquisition Corp (HLXA) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Helix Acquisition Corp (HLXA) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.
Helix Acquisition Corp (HLXA)'s detailed insider trading history can be found in Insider Trading Tracker table.
Helix Acquisition Corp Insider Transactions
Bihua Chen Mailing Address
Above is the net worth, insider trading, and ownership report for Bihua Chen. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Bihua Chen's mailing address is: Boston Ma 02116.