BBOT
HLXC
MLTX
BMEA
ERAS

Bihua Chen

Known title: Chairperson and CEOCIK: 0001599214

Bihua Chen's purchase track record

How the stock did after each of Bihua Chen's open-market purchases, measured from the purchase date. Several fills within a week count as one purchase.

Purchases measured
7
of 7 since April 5, 2022
Stock higher 6 months later
43%
3 months: 43%
Median 6-month return
-15.6%
3 months: -0.3%
Beat the S&P 500
29%
median -23.4% vs. index
PurchaseStockAmount3 months6 months
2/13/2024BBOT$24.00M-0.3%+0.3%
10/2/2023MLTX$20.32M+3.4%-15.6%
6/26/2023MLTX$60.54M+15.6%+33.9%
3/30/2023BMEA$12.00M-32.2%-57.9%
3/20/2023MLTX$16.77M+24.0%+170.4%
12/13/2022ERAS$2.00M-33.7%-40.6%
4/5/2022MLTX$28.50M-57.6%-39.6%

Computed by MarketWall from SEC Form 4 filings and daily closing prices (close on the purchase date to the close about 3 and 6 months later). Companies that have since delisted are not included. Past results, not investment advice.

Associated companies

AI Market Commentary

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Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.

October 16, 2026

BBOT reports inducement grants under Nasdaq Rule 5635(c)(4). BridgeBio Oncology Therapeutics announced that it has reported inducement grants in accordance with Nasdaq Listing Rule 5635(c)(4). The disclosure confirms the company’s compliance with regulatory reporting requirements for incentive arrangements. While the announcement does not provide details on the size of the grants, it highlights ongoing governance practices.

this person other insiders at BBOT
this person other insiders at HLXC

AI Market Commentary

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Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.

September 25, 2026

MLTX noted in psoriatic arthritis market landscape report. A recent DelveInsight analysis outlined six late‑stage drugs expected to drive growth in the psoriatic arthritis market. The report highlights the expanding opportunity for immunotherapy developers, which includes companies such as MoonLake Immunotherapeutics. This broader market view may influence how investors view MLTX's pipeline prospects.

this person other insiders at MLTX

AI Market Commentary

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September 29, 2026

Biomea Fusion Cancels Equity Offering, Shares Drop 19%. Biomea Fusion announced the termination of its proposed public equity offering, citing market conditions. The cancellation removes expected dilution relief and leaves the company with near‑term runway pressure. Following the news, the stock fell about 19% in after‑hours trading. The development occurs amid broader health‑care stock activity.

this person other insiders at BMEA

AI Market Commentary

AI-generatedAll commentary →

Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.

October 8, 2026

Erasca Faces Verastem Competition Amid Clinical Updates. Recent analysis highlights that Verastem's upcoming clinical data and commercial launch present a competitive challenge for Erasca. While Erasca's Revolution approval has reduced some development risk, the market is watching how the company navigates this new competitive landscape. The stock currently trades near significant support levels, reflecting cautious sentiment as investors assess these developments.

this person other insiders at ERAS

Transaction History

BBOT▼ Sell$0
BBOT▼ Sell$0
BBOT▼ Sell$0
BBOT▼ Sell$0
HLXC▲ Buy$5.0M
MLTX▼ Sell$41K
MLTX▼ Sell$664K
MLTX▼ Sell$2.0M
MLTX▼ Sell$18.5M
MLTX▼ Sell$25.7M
BBOT▲ Buy—
BBOT▼ Sell$0
BBOT▲ Buy$8.2M
BBOT▲ Buy$6.8M
BBOT▲ Buy$60.0M
BBOT▲ Buy—
BBOT▲ Buy—
BBOT▲ Buy—
BBOT▲ Buy$5.1M
BBOT▲ Buy$694K
BBOT▲ Buy$14.3M
BBOT▲ Buy$9.0M
MLTX▲ Buy$3.5M
MLTX▲ Buy$3.9M
MLTX▲ Buy$8.6M
MLTX▲ Buy$4.3M
MLTX▲ Buy$40.0M
MLTX▲ Buy$1.0M
MLTX▲ Buy$81K
MLTX▲ Buy$108K
MLTX▲ Buy$17K
MLTX▲ Buy$25K
MLTX▲ Buy$8K
MLTX▲ Buy$9K
MLTX▲ Buy$1K
MLTX▲ Buy$6K
MLTX▲ Buy$1K
MLTX▲ Buy$6K
MLTX▲ Buy$77K
MLTX▲ Buy$55K
MLTX▲ Buy$143K
MLTX▲ Buy$415K
MLTX▲ Buy$1.5M
MLTX▲ Buy$2.1M
MLTX▲ Buy$2.6M
MLTX▲ Buy$2.9M
MLTX▲ Buy$1.4M
MLTX▲ Buy$492K
MLTX▲ Buy$1.8M
MLTX▲ Buy$3.0M
MLTX▲ Buy$897K
MLTX▲ Buy$452K
MLTX▲ Buy$250K
MLTX▲ Buy$1.2M
BMEA▲ Buy$12.0M
MLTX▲ Buy$5.2M
MLTX▲ Buy$8.7M
MLTX▲ Buy$1.3M
MLTX▲ Buy$1.6M
ERAS▲ Buy$2.0M
MLTX▲ Buy$28.5M
MLTX▼ Sell$0

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