PRLB insider Oleg Ryaboy reports stock sale plans on Form 144

Rhea-AI Filing Summary

Proto Labs (PRLB)695 common shares through Morgan Stanley Smith Barney LLC on the NYSE, with an aggregate market value of $34,686.76 and an approximate sale date of 11/25/2025.

The 695 shares were acquired on 05/14/2024 through an Employee Stock Purchase Plan and paid for in cash. The filing also reports that during the past three months, Ryaboy sold 9,710 common shares on 11/07/2025 for gross proceeds of $471,629.27. By signing the notice, he represents that he is not aware of any undisclosed material adverse information about Proto Labs.

11/25/2025 - 04:53 PM

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	695	34686.76	23678745	11/25/2025	NYSE

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 *
Common	05/14/2024	Shares Purchased through Employee Stock Purchase Plan	Issuer			695	05/14/2024	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
OLEG RYABOY 5540 Pioneer Creek Drive Maple Plain MN 55359	Common	11/07/2025	9710	471629.27

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Proto Labs (PRLB) Form 144 filing disclose?

The Form 144 states that Oleg Ryaboy intends to sell up to 695 shares of Proto Labs common stock through Morgan Stanley Smith Barney LLC on the NYSE, with an aggregate market value of $34,686.76.

How many Proto Labs (PRLB) shares has the insider recently sold?

The filing reports that Oleg Ryaboy sold 9,710 common shares of Proto Labs on 11/07/2025, generating gross proceeds of $471,629.27 during the past three months.

How were the 695 Proto Labs (PRLB) shares to be sold acquired?

The 695 shares covered by this Form 144 were acquired on 05/14/2024 through an Employee Stock Purchase Plan, and the purchase was paid for in cash.

Which broker and exchange are involved in the planned Proto Labs (PRLB) share sale?

The planned sale of 695 Proto Labs common shares is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services on the NYSE, according to the Form 144.

What representation does the insider make in this Proto Labs (PRLB) Form 144?

By signing the notice, the person for whose account the securities are to be sold represents that they do not know any material adverse information about Proto Labs' current or prospective operations that has not been publicly disclosed.

What class of Proto Labs (PRLB) securities is covered by this Form 144?

The Form 144 covers common stock of Proto Labs, both for the 695 shares proposed for sale and the 9,710 shares sold in the past three months.