RPID Form 144: Class A sale notice dated 06/22/2026

The filing is a Form 144 notice relating to Class A shares.

Rhea-AI Filing Summary

The filing is a Form 144 notice relating to Class A shares. It lists a Stock Option Exercise disposition on 06/22/2026 with a numeric line item 3688, and reports a prior sale by John Wilson of 5,000 shares on 06/10/2026. The filing names Fidelity Brokerage Services LLC and indicates NASDAQ.

Key Figures

Form date: 06/22/2026 Prior sale quantity: 5,000 shares Numeric line item: 3688 +3 more

6 metrics

Form date 06/22/2026 Listed as the disposition date for Stock Option Exercise

Prior sale quantity 5,000 shares Securities Sold During The Past 3 Months by John Wilson on 06/10/2026

Numeric line item 3688 Appears on the securities and exercise lines in the filing

Numeric value shown 6,454.00 Shown on the securities line adjacent to 3688 in the excerpt

Document reference number 41,669,673 Long numeric string shown on the securities line in the excerpt

Additional numeric value 9,349.00 Displayed near the 5,000-share prior sale line

Key Terms

Form 144, Stock Option Exercise, Securities Sold During The Past 3 Months, Fidelity Brokerage Services LLC

4 terms

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Option Exercise financial

"Class A | 06/22/2026 | Stock Option Exercise"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Securities Sold During The Past 3 Months regulatory

"Securities Sold During The Past 3 Months | John Wilson"

Fidelity Brokerage Services LLC market

"Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the RPID Form 144 on 06/22/2026 report?

The Form 144 reports a Stock Option Exercise disposition dated 06/22/2026. It lists a numeric item 3688 and references Class A shares and Fidelity Brokerage Services LLC as the broker. The filing is a standard sale notice.

How many shares did John Wilson sell recently according to the filing?

The filing lists a prior sale by John Wilson of 5,000 shares on 06/10/2026. That transaction is reported under "Securities Sold During The Past 3 Months" and appears as part of the Form 144 notice record.

Which broker and market are named on the Form 144 for RPID?

The Form 144 names Fidelity Brokerage Services LLC at 900 Salem Street, Smithfield RI and indicates the market as NASDAQ. These details appear on the securities and broker lines of the notice.

Does the filing show transaction dates for the reported disposals?

Yes. The filing shows a disposition dated 06/22/2026 for the Stock Option Exercise and a prior sale dated 06/10/2026 for 5,000 shares. Those are the explicit dates shown in the document excerpt.

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

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Accepted by SEC EDGAR 06/22/2026 - 04:10 PM EDT Learn about SEC filing dates

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	Former 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	3688	6454.00	41669673	06/22/2026	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	06/22/2026	Stock Option Exercise	Issuer			3688	06/22/2026	Cash

* 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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
John Wilson 25 Hartwell Avenue Lexington MA 02421	Class A	06/10/2026	5000	9349.00

144: Remarks and Signature

Remarks
Date of Notice	06/22/2026
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/Wade Moss, 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)