PRLB Form 144: Notice of 7,433‑share Sale

PRLB proposed sale notice: a brokered sale relating to an exercise of stock options and related 10b5-1 transactions.

Rhea-AI Filing Summary

PRLB proposed sale notice: a brokered sale relating to an exercise of stock options and related 10b5-1 transactions. The excerpt lists 7,433 shares as securities to be sold on 05/11/2026 via exercise for cash, and records prior 10b5-1 sales of 200 shares for $14,000 on 05/07/2026 and 5,000 shares for $332,315 on 02/17/2026.

Insights

Securities Compliance Analyst

Notice records planned sale after option exercise and recent 10b5-1 sales.

The filing lists 7,433 shares to be sold on 05/11/2026 in connection with an exercise of stock options and shows prior 10b5-1 dispositions of 200 shares ($14,000) and 5,000 shares ($332,315). The transaction method is stated as cash.

Timing and cash‑flow treatment are explicit for the listed dates; subsequent disclosures or settlement details are not shown in the excerpt. Watch for any amended filings that confirm settlement, actual sale amounts, or additional selling methods.

Key Figures

Planned shares to be sold: 7,433 shares Recent 10b5-1 sale: 200 shares Recent 10b5-1 sale: 5,000 shares

3 metrics

Planned shares to be sold 7,433 shares scheduled sale via option exercise on <date>05/11/2026</date>

Recent 10b5-1 sale 200 shares sold on <date>05/07/2026</date> for <money>$14,000</money>

Recent 10b5-1 sale 5,000 shares sold on <date>02/17/2026</date> for <money>$332,315</money>

Key Terms

10b5-1 Sales, Exercise of Stock Options, Form 144

3 terms

10b5-1 Sales regulatory

"10b5-1 Sales for MICHAEL KENISON ... 05/07/2026"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Exercise of Stock Options financial

"Securities To Be Sold ... Exercise of Stock Options ... 05/11/2026"

Form 144 regulatory

"CONTENT TO ANALYZE: ... form_type: "144""

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.

FAQ

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

What does the PRLB Form 144 excerpt disclose?

The excerpt discloses a planned sale of 7,433 shares tied to an exercise of stock options scheduled for 05/11/2026. It also lists recent 10b5-1 sales of 200 shares ($14,000) and 5,000 shares ($332,315).

Who executed the prior 10b5-1 sales shown in the filing?

The prior 10b5-1 sales are attributed to Michael Kenison, with addresses shown and transactions dated 05/07/2026 and 02/17/2026, for 200 and 5,000 shares respectively.

How were the planned 7,433 shares to be sold according to the excerpt?

The filing states the 7,433 shares are to be sold on 05/11/2026 via an exercise of stock options with the method labeled as Cash in the excerpt.

Does the excerpt show proceeds or settlement details for the planned sale?

The excerpt lists the sale method as Cash and the scheduled date 05/11/2026, but it does not provide a total dollar proceeds figure or settlement confirmation for that planned transaction.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 05/11/2026 - 04:38 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	0001870293
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	7634793680
Name of Person for Whose Account the Securities are To Be Sold	MICHAEL KENISON
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
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	7433	515106.90	23794045	05/11/2026	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	05/11/2026	Exercise of Stock Options	Issuer			7433	05/11/2026	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
10b5-1 Sales for MICHAEL KENISON 5540 Pioneer Creek Drive Maple Plain MN 55359	Common	05/07/2026	200	14000.00
10b5-1 Sales for MICHAEL KENISON 5540 Pioneer Creek Drive Maple Plain MN 55359	Common	02/17/2026	5000	332315.00

144: Remarks and Signature

Remarks
Date of Notice	05/11/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/15/2025
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/ Michael Kenison
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)