William E. Duke

Companies

• Invivyd, Inc.Chief financial officer Sep 5, 2023 to now¹
• Apexigen, Inc.Chief financial officer Aug 8, 2022 to Aug 25, 2023²
• Kaleido Biosciences, Inc.Chief financial officer Nov 22, 2019 to Jan 18, 2022³
• Pulmatrix, Inc.Chief financial officer Jun 26, 2015 to May 20, 2019⁴

Holdings

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

Shares held

• IInvivyd, Inc. IVVD168,937 shares⁵$113.0K at $0.67Aug 18, 2026
• AApexigen, Inc.0 shares⁶Aug 23, 2023

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

Recent filings

• Aug 18, 2026Sold 18,425 shares at $0.84 of Invivyd, Inc.⁵
• Aug 17, 2026Sold 22,355 shares at $0.72 of Invivyd, Inc.⁵
• Aug 15, 2026Exercised options 102,000 shares of Invivyd, Inc.⁵
• Feb 18, 2026Sold 20,964 shares at $1.58 of Invivyd, Inc.⁷
• Feb 17, 2026Sold 19,663 shares at $1.54 of Invivyd, Inc.⁷
• Feb 15, 2026Exercised options 99,000 shares of Invivyd, Inc.⁷
• Aug 19, 2025Sold 29,643 shares at $0.57 of Invivyd, Inc.⁸
• Aug 18, 2025Sold 20,013 shares at $0.65 of Invivyd, Inc.⁸
• Aug 15, 2025Exercised options 99,000 shares of Invivyd, Inc.⁸
• Aug 23, 2023Returned to company 128,001 shares of Apexigen, Inc.⁶
• Aug 23, 2023Shares withheld for tax 26,416 shares at $0.39 of Apexigen, Inc.⁶
• Jun 15, 2023Shares withheld for tax 4,504 shares at $0.49 of Apexigen, Inc.⁹
• May 23, 2023Shares withheld for tax 17,261 shares at $0.40 of Apexigen, Inc.¹⁰
• May 23, 2023Granted 150,000 shares of Apexigen, Inc.¹⁰
• Dec 15, 2022Shares withheld for tax 4,503 shares at $1.06 of Apexigen, Inc.¹¹
• Oct 7, 2022Granted 30,685 shares of Apexigen, Inc.¹²