Rapid Micro (RPID) Director Richard Kollender Exercises Options

What Happened

• Richard S. Kollender, a director of Rapid Micro Biosystems, exercised stock options (transaction code M) on 2026-07-24 to acquire a total of 3,508 common shares. He exercised 1,681 options and 1,827 options at an exercise price of $0.75 per share, paying a combined cash amount of $2,631.
• The filing also shows the corresponding derivative instruments (the options) were converted/disposed at $0.00 consideration, reflecting the conversion of the options into the issued shares.

Key Details

• Transaction date: 2026-07-24.
• Shares acquired: 1,681 @ $0.75 (≈ $1,261) and 1,827 @ $0.75 (≈ $1,370); total 3,508 shares for $2,631.
• Derivative disposition: the same option instruments were marked disposed at $0.00 (conversion on exercise).
• Footnote: F1 states the option was fully vested and exercisable.
• Shares owned after the transaction: not disclosed in the filed data.
• Filing timeliness: filed same day (no late filing indicated).

Context

• This was an option exercise (a purchase of shares by paying the exercise price), not an open-market sale. Such exercises are common when options vest; they do not, by themselves, signal a change in insider sentiment.
• The dollar amount is small ($2.6k), so while it is an insider purchase, it is a routine exercise rather than a large-value buy that might draw more attention.