Charles McWherter

Companies

• 89bio, Inc.Board member Aug 7, 2024 to now¹
• CymaBay Therapeutics (United States)President Jan 27, 2023 to Mar 22, 2024²
• CymaBay Therapeutics (United States)Sr. Vice President Oct 11, 2013 to Jan 27, 2022³

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• CTCymaBay Therapeutics (United States)0 shares⁴Mar 22, 2024
• 889bio, Inc.0 shares⁵Oct 30, 2025

As of each latest filing. The line shows shares held over time.

Recent filings

• Oct 30, 2025U 25,000 shares of 89bio, Inc.⁵
• Jan 22, 2025Bought 10,000 shares at $6.71 of 89bio, Inc.⁶
• Jan 21, 2025Bought 5,000 shares at $6.55 of 89bio, Inc.⁶
• Dec 5, 2024Bought 10,000 shares at $8.00 of 89bio, Inc.⁷
• Mar 22, 2024Returned to company 31,938 shares of CymaBay Therapeutics (United States)⁴
• Mar 22, 2024Returned to company 15,000 shares of CymaBay Therapeutics (United States)⁴
• Jan 24, 2024Granted 31,938 shares of CymaBay Therapeutics (United States)⁸
• Jan 19, 2024Sold 3,125 shares at $23.68 of CymaBay Therapeutics (United States)⁹
• Jan 19, 2024Exercised options 3,125 shares at $11.69 of CymaBay Therapeutics (United States)⁹
• Jan 19, 2024Sold 8,334 shares at $23.68 of CymaBay Therapeutics (United States)⁹
• Jan 19, 2024Exercised options 8,334 shares at $10.00 of CymaBay Therapeutics (United States)⁹
• Jan 19, 2024Sold 1,916 shares at $23.66 of CymaBay Therapeutics (United States)⁹
• Jan 19, 2024Exercised options 1,916 shares at $1.82 of CymaBay Therapeutics (United States)⁹
• Jan 19, 2024Sold 2,778 shares at $23.66 of CymaBay Therapeutics (United States)⁹
• Jan 19, 2024Exercised options 2,778 shares at $1.72 of CymaBay Therapeutics (United States)⁹
• Jan 19, 2024Sold 2,250 shares at $23.67 of CymaBay Therapeutics (United States)⁹
• Jan 19, 2024Exercised options 2,250 shares at $1.06 of CymaBay Therapeutics (United States)⁹
• Dec 18, 2023Sold 6,504 shares at $21.48 of CymaBay Therapeutics (United States)¹⁰
• Dec 18, 2023Exercised options 6,504 shares at $5.00 of CymaBay Therapeutics (United States)¹⁰
• Dec 18, 2023Sold 4,828 shares at $21.49 of CymaBay Therapeutics (United States)¹⁰
• Dec 18, 2023Exercised options 4,828 shares at $5.00 of CymaBay Therapeutics (United States)¹⁰
• Nov 17, 2023Sold 11,342 shares at $18.28 of CymaBay Therapeutics (United States)¹¹
• Nov 17, 2023Exercised options 11,342 shares at $5.00 of CymaBay Therapeutics (United States)¹¹
• Oct 18, 2023Sold 21,743 shares at $14.07 of CymaBay Therapeutics (United States)¹²
• Oct 18, 2023Exercised options 21,743 shares at $5.00 of CymaBay Therapeutics (United States)¹²