Company: RPID
Filing Date: 2025-04-08
Form Type: DEF 14A
Source: 0001380106-25-000089
Chunk: 11

Company: RAPID MICRO BIOSYSTEMS, INC.
Filing Date: 2025-04-08
Form: DEF 14A
Chunk 11
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 or broker, you will receive instructions on how to vote from the bank or broker. You must follow their instructions in order for your shares to be voted. Online and telephone voting also may be offered to stockholders owning shares through certain banks and brokers. If your shares are not registered in your own name and you would like to vote your shares electronically at the Annual Meeting, you may visit www.virtualshareholdermeeting.com/RPID2025 and enter the 16-digit control number included in the voting instruction card provided to you by your bank or brokerage firm. If you hold your shares in street name and you do not receive a 16-digit control number, you may need to log in to your bank or brokerage firm’s website and select the shareholder communications mailbox to access the Annual Meeting and vote. Instructions should also be provided on the voting instruction card provided by your bank or brokerage firm.

#### CAN I CHANGE MY VOTE AFTER I SUBMIT MY PROXY?
Yes.

If you are a registered stockholder, you may revoke your proxy and change your vote by:

• submitting a duly executed proxy bearing a later date;

• granting a subsequent proxy online or by telephone;

• giving written notice of revocation to the Secretary of Rapid Micro Biosystems prior to the Annual Meeting; or

• voting electronically at the Annual Meeting.

Your most recent proxy card or online or telephone proxy is the one that is counted. Your attendance at the Annual Meeting by itself will not revoke your proxy unless you give written notice of revocation to the Secretary before your proxy is voted or you vote electronically during the Annual Meeting.

Written notices of revocation should be addressed to:

<div align='center'>Rapid Micro Biosystems, Inc.

25 Hartwell Avenue

Lexington, Massachusetts 02421

Attention: James Xu, SVP, Legal and Secretary</div>

Any change to your proxy that is provided online or by telephone must be submitted by 11:59 p.m., Eastern Time, on May 21, 2025, the day before the Annual Meeting. If your shares are held in street name, you may change or revoke your voting instructions by following the specific directions provided to you by your bank or broker, or you may vote electronically during the Annual Meeting.

#### WHO WILL COUNT THE VOTES?
A representative of Broadridge Financial Solutions, Inc., our inspector of elections, will tabulate and certify the votes cast before and during the Annual Meeting.

WHAT IF I DO NOT SPECIFY HOW MY SHARES ARE TO BE VOTED?

If you submit a