Charles McWherter

This profile gathers the share dealings of Charles McWherter across 2 companies, led by CymaBay Therapeutics, Inc. and 89bio, Inc. Between 18 May 2023 and 30 October 2025, the trades on record add up to 14 filings.

No open-market sale appears; the market trades are 2 purchases worth €108k. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. The rest of the record consists of 1 share grant and 9 option exercises. 2025 to date brings 1 purchase and no sales.

Most recently, on 30 October 2025, the filings show a transaction in 89bio, Inc. The last purchase on record was published on 23 January 2025, which is 633 days ago. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 2 days. US insiders must file a Form 4 within two business days of a trade. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.