Company: RPID
Filing Date: 2025-04-08
Form Type: DEF 14A
Source: 0001380106-25-000089
Chunk: 10

Company: RAPID MICRO BIOSYSTEMS, INC.
Filing Date: 2025-04-08
Form: DEF 14A
Chunk 10
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. To ensure that all of your shares are voted, for each Notice of Internet Availability or set of proxy materials, please submit your proxy by phone, online, or, if you received printed copies of the proxy materials, by completing, signing, dating and returning the enclosed proxy card in the enclosed envelope.

#### HOW DO I VOTE?
We recommend that stockholders promptly vote by proxy even if they plan to participate in the Annual Meeting using any of the methods described below. If stockholders later decide to attend the Annual Meeting via the online webcast and vote electronically during the meeting, that vote will automatically revoke any previously submitted proxy.

Shares Registered in Name of Stockholder. If you are a stockholder of record, there are three ways to vote by proxy before the Annual Meeting:

• Online —You can vote online at www.proxyvote.com by following the instructions on the Notice of Internet Availability or proxy card;

• By Telephone —You can vote by telephone by calling 1-800-690-6903 and following the instructions on the proxy card; or

• By Mail —You can vote by mail by signing, dating and mailing the proxy card, which you may have received by mail.

Online and telephone voting facilities for stockholders of record will be available 24 hours a day and will close at 11:59 p.m., Eastern Time, on May 21, 2025.

Stockholders of record may also vote during the Annual Meeting in the following manner:

• Online during the Annual Meeting —You can vote online during the Annual Meeting by visiting www.virtualshareholdermeeting.com/RPID2025 and entering the 16-digit control number included on your Notice of Internet Availability, proxy card or the instructions that accompanied your proxy materials and following the on-screen instructions. The availability of online voting may depend on the voting procedures of the organization that holds your shares. The Annual Meeting webcast will begin promptly at 9:00 a.m., Eastern Time, on Thursday, May 22, 2025. Online access will open approximately 15 minutes prior to the start of the Annual Meeting to allow time for you to log in and test your system. If you experience technical difficulties during the check-in process or

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#### TABLE OF CONTENTS
during the Annual Meeting, a technical assistance phone number will be made available on the virtual meeting registration page 15 minutes prior to the start time of the meeting.

Shares Registered in Street Name. If your shares are held in street name through a bank