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

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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
LIMIT LIMIT 2019-04-22 director & 10 percent owner
LIMIT LIMIT 2018-10-30 director & 10 percent owner
LIMIT LIMIT 2018-07-18 director & 10 percent owner
LIMIT LIMIT 2018-06-20 director & 10 percent owner
LIMIT LIMIT 2018-05-23 director & 10 percent owner
LIMIT LIMIT 2017-12-14 director & 10 percent owner
LIMIT LIMIT 2017-11-08 director & 10 percent owner
LIMIT LIMIT 2016-06-01 director & 10 percent owner
LIMIT LIMIT 2014-08-15 director & 10 percent owner
LIMIT LIMIT 2016-11-03 director & 10 percent owner
LIMIT LIMIT 2020-10-29 director & 10 percent owner
LIMIT LIMIT 2021-03-11 director & 10 percent owner
LIMIT LIMIT 2021-04-22 director & 10 percent owner
LIMIT LIMIT 2020-11-18 director & 10 percent owner
LIMIT LIMIT 2022-12-20 director
LIMIT LIMIT 2021-10-07 10 percent owner
LIMIT LIMIT 2021-06-24 10 percent owner
LIMIT LIMIT 2021-07-28 10 percent owner
LIMIT LIMIT 2023-04-20 10 percent owner
LIMIT LIMIT 2021-06-29 10 percent owner
LIMIT LIMIT 2021-03-25 director & 10 percent owner
LIMIT LIMIT 2025-09-30 10 percent owner
LIMIT LIMIT 2021-06-23 director & 10 percent owner
LIMIT LIMIT 2020-12-15 director & 10 percent owner
LIMIT LIMIT 2022-01-06 10 percent owner
LIMIT LIMIT 2023-03-30 director & 10 percent owner
LIMIT LIMIT 2021-06-16 director & 10 percent owner
LIMIT LIMIT 2021-10-20 10 percent owner
LIMIT LIMIT 2021-09-14 10 percent owner
LIMIT LIMIT 2016-11-03 director & 10 percent owner
LIMIT LIMIT 2023-03-03 10 percent owner
LIMIT LIMIT 2023-05-29 other: See below
LIMIT LIMIT 2023-05-29 other: See below
LIMIT LIMIT 2023-10-23 10 percent owner
LIMIT LIMIT 2024-10-04 10 percent owner
LIMIT LIMIT 2023-12-04 10 percent owner
LIMIT LIMIT 2024-01-26 10 percent owner
LIMIT LIMIT 2024-09-25 10 percent owner
LIMIT LIMIT 2025-02-12 10 percent owner
LIMIT LIMIT 2021-06-29 10 percent owner
LIMIT LIMIT 2024-10-15 10 percent owner
LIMIT LIMIT 2024-02-08 director & 10 percent owner
LIMIT LIMIT 2026-01-22 director & 10 percent owner & Chairperson and CEO
LIMIT LIMIT 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.

No transactions are available. GuruFocus only tracks and displays the purchase and sale of non-derivative security in open market or private transactions from SEC filings with the transaction code of P or S.
Total 0
  • 1
Only the transactions in Open Market or Private Sale at the market prices are included. Other transactions such as conversion of derivative security or exercise of options are not included. Insiders are limited to only officers and/or directors of the company.

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.

Please note GuruFocus will not track the insiders’ transaction performance if he/she does not have buying transactions.

Performance of Bihua Chen

Average Return

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Average return per transaction

Outperforming Transactions

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2 out of 9 outperforming transactions.
Each transaction is measured over a period and compared to .
1 Month 3 Months 6 Months 1 Year 2 Years 3 Years
Return(%) 0.62 LIMIT LIMIT LIMIT LIMIT LIMIT
Relative Return to S&P 500(%) -1.01 LIMIT LIMIT LIMIT LIMIT LIMIT

Get the full picture on these stocks
See GF Score, valuation, financials, and warning signs for every stock Bihua Chen owns.
View MLTX Analysis

Bihua Chen Ownership Network

Ownership Network List of Bihua Chen

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Ownership Network Relation of Bihua Chen

Insider Network Chart


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.

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Helix Acquisition Corp Insider Transactions

No Available Data

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.