RPID insider plans sale of 4,610 Class A shares

A shareholder of RPID filed a notice of intent to sell 4,610 shares of Class A stock under Rule 144.

Accepted by SEC EDGAR 02/09/2026 - 04:27 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

A shareholder of RPID filed a notice of intent to sell 4,610 shares of Class A stock under Rule 144. The planned sale, valued at $17,438.25, is to be executed through Fidelity Brokerage Services LLC on the NASDAQ around February 9, 2026. These shares were acquired on February 6, 2026 through restricted stock vesting as compensation from the issuer, indicating they are recently vested equity awards being sold into the market.

FAQ

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What does the Form 144 filing for RPID disclose?

The Form 144 filing for RPID discloses a shareholder’s intention to sell 4,610 Class A shares under Rule 144. The filing outlines share quantity, market value, acquisition method, planned sale date, and the broker and exchange that will be used for the transaction.

How many RPID shares are planned to be sold and at what value?

The filing states an intention to sell 4,610 Class A shares of RPID stock. The aggregate market value for this planned sale is reported as $17,438.25, based on the market price at the time used in the notice.

How and when were the RPID shares being sold under Form 144 acquired?

The 4,610 RPID Class A shares were acquired on February 6, 2026 through restricted stock vesting. The filing notes the nature of the acquisition as compensation from the issuer, indicating these are recently vested equity compensation shares rather than open-market purchases.

Which broker and exchange will handle the planned RPID share sale?

The Form 144 indicates the seller plans to use Fidelity Brokerage Services LLC as the broker. The shares are expected to be sold on the NASDAQ stock market, providing a clear view of where the transaction is intended to occur.

What is the approximate date of the RPID share sale under this Form 144?

The notice lists an approximate sale date of February 9, 2026 for the 4,610 RPID Class A shares. This date reflects when the shareholder expects to begin selling, subject to market conditions and Rule 144 requirements.

What type of transaction is behind the RPID shares now being sold?

The filing identifies the source of the shares as restricted stock vesting received as compensation from the issuer on February 6, 2026. This means the seller is monetizing equity awards rather than disposing of long-held, open-market purchases.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001872301
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	RAPID MICRO BIOSYSTEMS, INC.
SEC File Number	001-40592
Address of Issuer	25 HARTWELL AVENUE LEXINGTON MASSACHUSETTS 02421
Phone	978-349-3200
Name of Person for Whose Account the Securities are To Be Sold	Wilson John J. Addington
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	4610	17438.25	39823026	02/09/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A	02/06/2026	Restricted Stock Vesting	Issuer			4610	02/06/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	02/09/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for John Wilson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)