Key facts
- This page summarizes Richard S. Kollender's Form 4 filing for RAPID MICRO BIOSYSTEMS, INC. (RPID).
- 4 reported transactions and 2 derivative rows are listed below.
- Accepted by SEC: 24 Jul 2026, 18:31.
Richard S. Kollender - 24 Jul 2026 Form 4 Insider Report for RAPID MICRO BIOSYSTEMS, INC. (RPID)
- Reporting relationship
- Director
- Issuer ticker
- RPID
- Reported as of
- 24 Jul 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 24 Jul 2026, 18:31:32 UTC
- Prior SEC filing
- 26 May 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Sean M. Wirtjes, Attorney-in-Fact for Richard S. Kollender
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Richard S. Kollender filed Form 4 for RAPID MICRO BIOSYSTEMS, INC. (RPID) on 24 Jul 2026.
Change
- Previous filing in this sequence was filed on 26 May 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001415666
Primary reporting owner
Kollender Richard S
- Relationship
- Director
- Address
- C/O RAPID MICRO BIOSYSTEMS, INC., 25 HARTWELL AVENUE, LEXINGTON
- Signature
- /s/ Sean M. Wirtjes, Attorney-in-Fact for Richard S. Kollender
- Signature date
- 24 Jul 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
RPID
transaction
Class A Common Stock
Options Exercise
- Transaction value
- Shares
- +1,681
- Change %
- +1.3%
- Price
- $0.7500*
- Shares after
- 131,999
- Date
- 24 Jul 2026
- Ownership
- Direct
RPID
transaction
Class A Common Stock
Options Exercise
- Transaction value
- Shares
- +1,827
- Change %
- +1.4%
- Price
- $0.7500*
- Shares after
- 133,826
- Date
- 24 Jul 2026
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
RPID
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -1,681
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 24 Jul 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 1,681
- Exercise price
- $0.7500
- Footnotes
- F1
RPID
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -1,827
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 24 Jul 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 1,827
- Exercise price
- $0.7500
- Footnotes
- F1
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 1 footnote
Footnote F1
The option is fully vested and exercisable.