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Proto Labs Inc

For the period ended Jun 30, 2026. Filed Jul 31, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Jul 31, 2026

PRLB$69.09+5.2%Stored close · as of Nov 9, 2026

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Item 5. Other Information

On June 6, 2026, Daniel Schumacher, Chief Financial Officer of the Company, entered into a 10b5-1 sales plan intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Exchange Act. This 10b5-1 sales plan provides for the sale of up to 10,000 shares of the Company's common stock related to vested restricted stock units granted to Mr. Schumacher. This 10b5-1 sales plan will become effective on September 4, 2026 and expire on June 3, 2027, or upon the earlier completion of all authorized transactions under the plan.

During the three months ended June 30, 2026, no other directors or officers (as defined in Rule 16a-1(f) of the Exchange Act)adopted, modified orterminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) of the Exchange Act or any non-Rule 10b5-1 trading arrangement (as defined in Item 408(c) of Regulation S-K).

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