UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): ~~May~~June 2217, 2025

RAPID MICRO BIOSYSTEMS, INC.

(Exact name of registrant as specified in its charter)


Delaware	001-40592	20-8121647
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(I.R.S. Employer Identification No.)
25 Hartwell Avenue, Lexington, MA		02421
(Address of principal executive offices)		(Zip Code)

978-349-3200

(Registrant’s telephone number, including area code)

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


o			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading
Symbols

Name of each exchange on which
registered

Class A Common Stock, $0.01 par value per share

RPID

The Nasdaq Capital Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company þ

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 58.0201 ~~Departure~~Other ~~of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers~~Events.

On ~~May~~June 2217, 2025, ~~Jeffrey~~Robert ~~Schwartz notified Rapid Micro Biosystems~~Spignesi, ~~Inc.~~President ~~(the~~and ~~"Company")~~Chief ofExecutive ~~his~~Officer ~~resignation from the board~~ of ~~directors~~Rapid ofMicro ~~the Company and all committees thereof~~Biosystems, ~~effective as of May 22, 2025~~Inc. ~~Mr.~~issued ~~Schwartz was~~ a ~~Class~~letter IIregarding ~~director and served as the chair of the nominating and corporate governance committee. Mr. Schwartz’s resignation was not the result of~~ a ~~disagreement~~recently ~~with~~diagnosed ~~the~~medical ~~Company on any matter relating to its operations, policies or practices~~condition. ~~Mr.~~A ~~Schwartz~~copy ~~has served as a director~~ of the ~~Company~~letter ~~since~~is ~~April~~attached ~~2018, and the Company thanks him for his years of service and contributions~~ as aExhibit ~~member of its board of directors~~99.1.

Item 59.0701 ~~Submission~~Financial ofStatements ~~Matters~~and ~~to a Vote of Security Holders~~Exhibits.

~~The Company held its annual meeting of stockholders on May 22, 2025~~ (~~the “Annual Meeting”~~d)~~, at which a quorum was present~~Exhibits. There were two items of business acted upon by the stockholders. There were 39,328,820 shares of the Company’s Class A common stock eligible to vote, and 34,921,524 shares were present in person or by proxy at the Annual Meeting. The following is a summary of the matters voted on at the Annual Meeting:

1. The Company’s stockholders elected Dafni Bika, Ph.D. and Inese Lowenstein as Class I Directors to serve until the 2028 Annual Meeting of Stockholders and until their respective successors have been duly elected and qualified or until such director’s earlier death, resignation or removal.


Exhibit No.						Description
99.1						Letter from Robert Spignesi, President and Chief Executive Officer of Rapid Micro Biosystems, Inc.
104						Cover Page Interactive Data File (formatted as inline XBRL)

The results of the stockholders’ vote with respect to the election of such Class I Directors were as follows:

	Votes For	VotesWithheld	BrokerNon-Votes
Dafni Bika, Ph.D.	25,376,131	352,154	9,193,239
Inese Lowenstein	24,584,537	1,143,748	9,193,239

2. The Company’s stockholders ratified the appointment of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2025. The results of the stockholders’ vote with respect to such ratification were as follows:

Votes For			VotesAgainst			VotesAbstaining			BrokerNon-Votes
34,473,523			6,404			441,597			0

No other matters were submitted to or voted on by the Company’s stockholders at the Annual Meeting.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	RAPID MICRO BIOSYSTEMS, INC.
Date: May 23, 2025	By:	/s/ Sean Wirtjes
Date: June 17, 2025	By:	/s/ Robert Spignesi
		Sean Wirtjes
		Robert Spignesi
		Chief Financial Officer
		President and Chief Executive Officer

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