William C. Bertrand Jr.

Companies

• Adaptimmune (United Kingdom)Chief operating officer Mar 15, 2017 to now¹
• Ardelyx (United States)Board member Oct 28, 2015 to now²
• INFINITY PHARMACEUTICALS, INC.General counsel Oct 21, 2015 to Oct 21, 2015³
• Salix PharmaceuticalsGen Counsel&VP Corp Compliance Jul 26, 2013 to Apr 3, 2015⁴

Holdings

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

Shares held

• AUArdelyx (United States) ARDX329,507 shares⁵$1.0M at $3.10Jun 16, 2026
• AUAdaptimmune (United Kingdom) ADAPY986,352 shares⁶$23.2K at $0.02Aug 28, 2025

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

Recent filings

• Jun 16, 2026Granted 26,455 shares of Ardelyx (United States)⁵
• Jun 16, 2026Granted 12,345 shares of Ardelyx (United States)⁵
• Aug 28, 2025Sold 207,000 shares at $0.01 of Adaptimmune (United Kingdom)⁶
• Jun 18, 2025Granted 41,551 shares of Ardelyx (United States)⁷
• Jun 18, 2025Granted 19,390 shares of Ardelyx (United States)⁷
• Jan 17, 2025Sold 5,584 shares at $0.58 of Adaptimmune (United Kingdom)⁸
• Jan 15, 2025Sold 9,803 shares at $0.57 of Adaptimmune (United Kingdom)⁹
• Jan 13, 2025Sold 5,471 shares at $0.59 of Adaptimmune (United Kingdom)⁹
• Jan 13, 2025Sold 4,268 shares at $0.59 of Adaptimmune (United Kingdom)⁹
• Jun 14, 2024Granted 11,023 shares of Ardelyx (United States)¹⁰
• Jan 17, 2024Sold 13,599 shares at $0.67 of Adaptimmune (United Kingdom)¹¹
• Jan 17, 2024Sold 5,309 shares at $0.67 of Adaptimmune (United Kingdom)¹¹
• Jan 16, 2024Sold 4,681 shares at $0.79 of Adaptimmune (United Kingdom)¹¹
• Jan 12, 2024Sold 5,220 shares at $0.85 of Adaptimmune (United Kingdom)¹²
• Jan 11, 2024Sold 4,009 shares at $0.84 of Adaptimmune (United Kingdom)¹²
• Jun 15, 2023Granted 16,581 shares of Ardelyx (United States)¹³
• Jan 17, 2023Sold 4,440 shares at $1.86 of Adaptimmune (United Kingdom)¹⁴
• Jan 12, 2023Sold 4,973 shares at $1.71 of Adaptimmune (United Kingdom)¹⁵
• Jan 11, 2023Sold 3,843 shares at $1.75 of Adaptimmune (United Kingdom)¹⁵
• Jan 4, 2023Sold 3,584 shares at $1.69 of Adaptimmune (United Kingdom)¹⁶
• Jun 15, 2022Granted 118,613 shares of Ardelyx (United States)¹⁷
• Jan 18, 2022Sold 4,368 shares at $3.19 of Adaptimmune (United Kingdom)¹⁸
• Jan 12, 2022Sold 2,248 shares at $3.54 of Adaptimmune (United Kingdom)¹⁹
• Jan 11, 2022Sold 3,770 shares at $3.56 of Adaptimmune (United Kingdom)¹⁹
• Jan 4, 2022Sold 3,490 shares at $4.06 of Adaptimmune (United Kingdom)²⁰