Sean M. Wirtjes

Companies

• RAPID MICRO BIOSYSTEMS, INC.Chief financial officer Jul 14, 2021 to now¹

Holdings

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

Shares held

• RMRAPID MICRO BIOSYSTEMS, INC. RPID568,981 shares²$447.3K at $0.79May 29, 2026

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

Recent filings

• May 29, 2026Granted 12,787 shares at $1.96 of RAPID MICRO BIOSYSTEMS, INC.²
• Mar 11, 2026Sold 7,480 shares at $4.32 of RAPID MICRO BIOSYSTEMS, INC.³
• Feb 20, 2026Sold 17,254 shares at $3.92 of RAPID MICRO BIOSYSTEMS, INC.⁴
• Feb 11, 2026Granted 97,000 shares of RAPID MICRO BIOSYSTEMS, INC.⁵
• Feb 9, 2026Sold 6,027 shares at $3.78 of RAPID MICRO BIOSYSTEMS, INC.⁶
• Mar 9, 2025Shares withheld for tax 7,690 shares at $2.39 of RAPID MICRO BIOSYSTEMS, INC.⁷
• Feb 18, 2025Granted 160,000 shares of RAPID MICRO BIOSYSTEMS, INC.⁸
• Feb 11, 2025Shares withheld for tax 4,621 shares at $2.68 of RAPID MICRO BIOSYSTEMS, INC.⁹
• Feb 6, 2025Shares withheld for tax 5,891 shares at $3.10 of RAPID MICRO BIOSYSTEMS, INC.¹⁰
• Aug 7, 2024Bought 10,000 shares at $0.78 of RAPID MICRO BIOSYSTEMS, INC.¹¹
• Mar 11, 2024Shares withheld for tax 7,454 shares at $0.98 of RAPID MICRO BIOSYSTEMS, INC.¹²
• Feb 12, 2024Shares withheld for tax 3,794 shares at $0.96 of RAPID MICRO BIOSYSTEMS, INC.¹³
• Feb 6, 2024Granted 51,000 shares of RAPID MICRO BIOSYSTEMS, INC.¹⁴
• Sep 6, 2023Bought 10,000 shares at $0.99 of RAPID MICRO BIOSYSTEMS, INC.¹⁵
• Mar 9, 2023Granted 78,600 shares of RAPID MICRO BIOSYSTEMS, INC.¹⁶
• Feb 13, 2023Shares withheld for tax 4,621 shares at $1.30 of RAPID MICRO BIOSYSTEMS, INC.¹⁷
• Mar 17, 2022Exercised options 10,000 shares at $1.00 of RAPID MICRO BIOSYSTEMS, INC.¹⁸
• Feb 11, 2022Granted 40,000 shares of RAPID MICRO BIOSYSTEMS, INC.¹⁹