[144] Proto Labs Inc SEC Filing

Proto Labs (symbol PRLB) received a Rule 144 notice from shareholder Oleg Ryaboy covering planned sales of common stock.

Rhea-AI Filing Summary

Proto Labs (symbol PRLB) received a Rule 144 notice from shareholder Oleg Ryaboy covering planned sales of common stock. The notice states an intention to sell 7,178 common shares through Morgan Stanley Smith Barney LLC on the NYSE, with an aggregate market value of $393,329.99, at a time when 23,678,745 common shares were outstanding.

The shares to be sold come from option exercises under a registered plan on 01/15/2026, where 3,048 and 4,130 common shares were acquired for cash on that same date. The filing also lists prior sales by the same shareholder over the past three months: 695, 9,710, 7,026, and 6,669 common shares, with gross proceeds of $34,686.76, $471,629.27, $384,413.54, and $357,327.02, respectively.

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Accepted by SEC EDGAR 01/15/2026 - 04:37 PM EST 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	0001945827
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	PROTO LABS, INC.
SEC File Number	001-35435
Address of Issuer	5540 Pioneer Creek Drive Maple Plain MINNESOTA 55359
Phone	763-479-3680
Name of Person for Whose Account the Securities are To Be Sold	OLEG RYABOY
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
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	7178	393329.99	23678745	01/15/2026	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	01/15/2026	Exercise of options under a registered plan	Issuer			3048	01/15/2026	Cash
Common	01/15/2026	Exercise of options under a registered plan	Issuer			4130	01/15/2026	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
OLEG RYABOY 5540 Pioneer Creek Drive Maple Plain MN 55359	Common	11/25/2025	695	34686.76
OLEG RYABOY 5540 Pioneer Creek Drive Maple Plain MN 55359	Common	11/07/2025	9710	471629.27
OLEG RYABOY 5540 Pioneer Creek Drive Maple Plain MN 55359	Common	01/08/2026	7026	384413.54
OLEG RYABOY 5540 Pioneer Creek Drive Maple Plain MN 55359	Common	01/07/2026	6669	357327.02

144: Remarks and Signature

Remarks
Date of Notice	01/15/2026
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/ Oleg Ryaboy
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)