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PRLB

Proto Labs Inc

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Tapewire entity
4553
SEC CIK
0001443669
Parsed reports
257

Last 12 months

Inside the activity.

0 purchase rows · 15 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202502
Dec 202500
Jan 202600
Feb 202602
Mar 202600
Apr 202600
May 202606
Jun 202602
Jul 202600
Aug 202600
Sep 202603
Oct 202600

Latest available

Insider transactions

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
September 24, 2026 Filed Sep 25, 2026 20:11 UTC
Schumacher DanielChief Financial Officer
SaleCommon Stock 5,000 $95.32 $476,604.50
Disclosure

SEC source: 0001628280-26-063573 · wk-form4_1790367067.xml · nonDerivative · entry 1

Schumacher Daniel · CIK 0001894753 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 35,019

F1 · kind: This transaction was executed pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

F2 · price: Reflects the weighted average price of 5,000 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on September 24, 2026, with sale prices ranging from $95.00 to $95.65 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
September 17, 2026 Filed Sep 18, 2026 20:02 UTC
Schumacher DanielChief Financial Officer
SaleCommon Stock 4,900 $85.21 $417,535.37
Disclosure

SEC source: 0001628280-26-062704 · wk-form4_1789761748.xml · nonDerivative · entry 2

Schumacher Daniel · CIK 0001894753 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 40,019

F1 · kind: This transaction was executed pursuant to a Rule 10b5 1 trading plan adopted by the Reporting Person on June 5, 2026.

F2 · price: Reflects the weighted average price of 4,900 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on September 17, 2026, with sale prices ranging from $85.00 to $85.50 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
September 16, 2026 Filed Sep 18, 2026 20:02 UTC
Schumacher DanielChief Financial Officer
SaleCommon Stock 100 $85.00 $8,500.00
Disclosure

SEC source: 0001628280-26-062704 · wk-form4_1789761748.xml · nonDerivative · entry 1

Schumacher Daniel · CIK 0001894753 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 44,919

F1 · kind: This transaction was executed pursuant to a Rule 10b5 1 trading plan adopted by the Reporting Person on June 5, 2026.

Read SEC document
June 02, 2026 Filed Jun 4, 2026 20:53 UTC SaleCommon Stock 500 $78.38 $39,190.00
Disclosure

SEC source: 0001628280-26-040863 · wk-form4_1780606432.xml · nonDerivative · entry 2

WEHRWEIN SVEN · CIK 0001205069 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,505

Read SEC document
June 02, 2026 Filed Jun 4, 2026 20:53 UTC SaleCommon Stock 1,500 $76.91 $115,360.05
Disclosure

SEC source: 0001628280-26-040863 · wk-form4_1780606432.xml · nonDerivative · entry 1

WEHRWEIN SVEN · CIK 0001205069 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,005

F1 · price: Reflects the weighted average price of 1,500 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on June 2, 2026, with sale prices ranging from $76.86 to $77.00 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
May 23, 2026 Filed May 27, 2026 20:18 UTC
Krishna SureshDirector · President and CEO
Tax withholdingCommon Stock 1,247 $71.36 $88,985.92
Disclosure

SEC source: 0001628280-26-038475 · wk-form4_1779913110.xml · nonDerivative · entry 1

Krishna Suresh · CIK 0001488151 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,147

Read SEC document
May 20, 2026 Filed May 22, 2026 20:12 UTC
Schumacher DanielChief Financial Officer
Tax withholdingCommon Stock 255 $71.13 $18,138.15
Disclosure

SEC source: 0001628280-26-037725 · wk-form4_1779480750.xml · nonDerivative · entry 1

Schumacher Daniel · CIK 0001894753 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,019

Read SEC document
May 20, 2026 Filed May 22, 2026 20:12 UTC
Parlange BernardoChief Commercial Officer
GrantEmployee Stock Option (right to buy) · Derivative 3,789 $0.00 Strike: $71.13 $0.00
Disclosure

SEC source: 0001628280-26-037722 · wk-form4_1779480731.xml · derivative · entry 2

Parlange Bernardo · CIK 0002135514 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,789

Underlying: Common Stock · 3,789 shares

Expires 2036-05-20

F2 · derivative.exercise_date: 25% of shares subject to the award will vest on May 20, 2027, and on each May 20th thereafter until all shares subject to the award are fully vested.

Read SEC document
May 20, 2026 Filed May 22, 2026 20:12 UTC
Parlange BernardoChief Commercial Officer
GrantCommon Stock 2,109 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-037722 · wk-form4_1779480731.xml · nonDerivative · entry 1

Parlange Bernardo · CIK 0002135514 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,109

F1 · shares: Restricted Stock Units that vest as follows: 25% of shares subject to the award will vest on May 20, 2027, and on each May 20th thereafter until all shares subject to the award are fully vested.

Read SEC document
May 19, 2026 Filed May 21, 2026 20:07 UTC GrantCommon Stock 2,210 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-037251 · wk-form4_1779394055.xml · nonDerivative · entry 1

Black Archie C. · CIK 0001489095 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,428

F1 · shares: Deferred stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders but must be retained until the reporting person's service on the Company's Board of Directors ends.

Read SEC document
May 19, 2026 Filed May 21, 2026 20:06 UTC
Chand SujeetDirector
GrantCommon Stock 2,210 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-037247 · wk-form4_1779394011.xml · nonDerivative · entry 1

Chand Sujeet · CIK 0001388884 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,863

F1 · shares: Deferred stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders but must be retained until the reporting person's service on the Company's Board of Directors ends.

Read SEC document
May 19, 2026 Filed May 21, 2026 20:06 UTC
Chin MoonhieDirector
GrantCommon Stock 2,210 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-037245 · wk-form4_1779393982.xml · nonDerivative · entry 1

Chin Moonhie · CIK 0001395001 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,306

F1 · shares: Deferred stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders but must be retained until the reporting person's service on the Company's Board of Directors ends.

Read SEC document
May 19, 2026 Filed May 21, 2026 20:06 UTC GrantCommon Stock 2,210 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-037243 · wk-form4_1779393959.xml · nonDerivative · entry 1

Gawlick Rainer · CIK 0001542473 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,093

F1 · shares: Deferred stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders but must be retained until the reporting person's service on the Company's Board of Directors ends.

Read SEC document
May 19, 2026 Filed May 21, 2026 20:05 UTC GrantCommon Stock 2,210 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-037234 · wk-form4_1779393912.xml · nonDerivative · entry 1

WEHRWEIN SVEN · CIK 0001205069 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,505

F1 · shares: Deferred stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders but must be retained until the reporting person's service on the Company's Board of Directors ends.

Read SEC document
May 19, 2026 Filed May 21, 2026 20:04 UTC GrantCommon Stock 2,210 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-037232 · wk-form4_1779393889.xml · nonDerivative · entry 1

KRANTZ DONALD G · CIK 0001183159 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,863

F1 · shares: Restricted stock units that vest in full on the earlier of the first anniversary of the grant date or the date of the 2027 Annual Meeting of Shareholders.

Read SEC document
May 12, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionEmployee Stock Option (right to buy) · Derivative 4,042 $0.00 Strike: $59.40 $0.00
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · derivative · entry 15

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,042 shares

Expires 2032-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F10 · derivative.exercise_date: 25% of shares subject to the award will vest on February 13, 2023, and on each February 13th thereafter until all shares subject to the award are fully vested.

Read SEC document
May 12, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionEmployee Stock Option (right to buy) · Derivative 1,557 $0.00 Strike: $39.61 $0.00
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · derivative · entry 14

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,674

Underlying: Common Stock · 1,557 shares

Expires 2035-02-25

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F9 · derivative.exercise_date: 25% of shares subject to the award will vest on February 25, 2026, and on each February 25th thereafter until all shares subject to the award are fully vested.

Read SEC document
May 12, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionEmployee Stock Option (right to buy) · Derivative 1,928 $0.00 Strike: $33.84 $0.00
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · derivative · entry 13

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,928

Underlying: Common Stock · 1,928 shares

Expires 2033-02-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F7 · derivative.exercise_date: 25% of shares subject to the award will vest on February 13, 2024, and on each February 13th thereafter until all shares subject to the award are fully vested.

Read SEC document
May 12, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
SaleCommon Stock 6,643 $70.30 $466,975.00
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · nonDerivative · entry 10

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,683

F6 · price: Reflects the weighted average price of 6,643 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on May 12, 2026, with sale prices ranging from $70.13 to $70.57 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
May 12, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
SaleCommon Stock 3,576 $69.78 $249,541.50
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · nonDerivative · entry 9

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 25,326

F5 · price: Reflects the weighted average price of 3,576 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on May 12, 2026, with sale prices ranging from $69.13 to $70.1181 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
May 12, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
SaleCommon Stock 4,198 $68.70 $288,390.43
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · nonDerivative · entry 8

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,902

F4 · price: Reflects the weighted average price of 4,198 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on May 12, 2026, with sale prices ranging from $68.10 to $69.0425 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
May 12, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
SaleCommon Stock 1,613 $67.58 $109,007.67
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · nonDerivative · entry 7

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 33,100

F3 · price: Reflects the weighted average price of 1,613 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on May 12, 2026, with sale prices ranging from $67.06 to $68.05 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
May 12, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionCommon Stock 4,042 $59.40 $240,094.80
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · nonDerivative · entry 6

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,713

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 12, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionCommon Stock 1,557 $39.61 $61,672.77
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · nonDerivative · entry 5

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,671

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 12, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionCommon Stock 1,928 $33.84 $65,243.52
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · nonDerivative · entry 4

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 29,114

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
May 11, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionEmployee Stock Option (right to buy) · Derivative 3,677 $0.00 Strike: $33.52 $0.00
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · derivative · entry 12

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,778

Underlying: Common Stock · 3,677 shares

Expires 2034-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025.

F8 · derivative.exercise_date: 25% of shares subject to the award will vest on February 13, 2025, and on each February 13th thereafter until all shares subject to the award are fully vested.

Read SEC document
May 11, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionEmployee Stock Option (right to buy) · Derivative 3,756 $0.00 Strike: $33.84 $0.00
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · derivative · entry 11

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,856

Underlying: Common Stock · 3,756 shares

Expires 2033-02-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025.

F7 · derivative.exercise_date: 25% of shares subject to the award will vest on February 13, 2024, and on each February 13th thereafter until all shares subject to the award are fully vested.

Read SEC document
May 11, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
SaleCommon Stock 7,433 $70.26 $522,251.50
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · nonDerivative · entry 3

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,186

F1 · kind: These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025.

F2 · price: Reflects the weighted average price of 7,433 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on May 11, 2026, with sale prices ranging from $70.00 to $70.57 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Read SEC document
May 11, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionCommon Stock 3,677 $33.52 $123,253.04
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · nonDerivative · entry 2

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,619

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025.

Read SEC document
May 11, 2026 Filed May 13, 2026 20:40 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionCommon Stock 3,756 $33.84 $127,103.04
Disclosure

SEC source: 0001628280-26-034651 · wk-form4_1778704834.xml · nonDerivative · entry 1

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,942

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025.

Read SEC document
May 07, 2026 Filed May 8, 2026 20:33 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionEmployee Stock Option (right to buy) · Derivative 100 $0.00 Strike: $33.52 $0.00
Disclosure

SEC source: 0001628280-26-032958 · wk-form4_1778272404.xml · derivative · entry 5

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,455

Underlying: Common Stock · 100 shares

Expires 2034-02-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025.

F3 · derivative.exercise_date: 25% of shares subject to the award will vest on February 13, 2025, and on each February 13th thereafter until all shares subject to the award are fully vested.

Read SEC document
May 07, 2026 Filed May 8, 2026 20:33 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionEmployee Stock Option (right to buy) · Derivative 100 $0.00 Strike: $33.84 $0.00
Disclosure

SEC source: 0001628280-26-032958 · wk-form4_1778272404.xml · derivative · entry 4

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,612

Underlying: Common Stock · 100 shares

Expires 2033-02-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025.

F2 · derivative.exercise_date: 25% of shares subject to the award will vest on February 13, 2024, and on each February 13th thereafter until all shares subject to the award are fully vested.

Read SEC document
May 07, 2026 Filed May 8, 2026 20:33 UTC
Kenison Michael R.Chief Operations Officer
SaleCommon Stock 200 $70.00 $14,000.00
Disclosure

SEC source: 0001628280-26-032958 · wk-form4_1778272404.xml · nonDerivative · entry 3

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,186

F1 · kind: These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025.

Read SEC document
May 07, 2026 Filed May 8, 2026 20:33 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionCommon Stock 100 $33.52 $3,352.00
Disclosure

SEC source: 0001628280-26-032958 · wk-form4_1778272404.xml · nonDerivative · entry 2

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,386

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025.

Read SEC document
May 07, 2026 Filed May 8, 2026 20:33 UTC
Kenison Michael R.Chief Operations Officer
Exercise / conversionCommon Stock 100 $33.84 $3,384.00
Disclosure

SEC source: 0001628280-26-032958 · wk-form4_1778272404.xml · nonDerivative · entry 1

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,286

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: These shares were acquired and sold pursuant to Reporting Person's 10b5-1 plan adopted August 15, 2025.

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:16 UTC
Kenison Michael R.Chief Operations Officer
GrantEmployee Stock Option (right to buy) · Derivative 4,404 $0.00 Strike: $62.63 $0.00
Disclosure

SEC source: 0001628280-26-012831 · wk-form4_1772226970.xml · derivative · entry 3

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,404

Underlying: Common Stock · 4,404 shares

Expires 2036-02-25

F2 · derivative.exercise_date: 25% of shares subject to the award will vest on February 25, 2027, and on each February 25th thereafter until all shares subject to the award are fully vested.

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:16 UTC
Kenison Michael R.Chief Operations Officer
Tax withholdingCommon Stock 531 $62.63 $33,256.53
Disclosure

SEC source: 0001628280-26-012831 · wk-form4_1772226970.xml · nonDerivative · entry 2

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,186

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:16 UTC
Kenison Michael R.Chief Operations Officer
GrantCommon Stock 2,415 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-012831 · wk-form4_1772226970.xml · nonDerivative · entry 1

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,717

F1 · shares: Restricted Stock Units that vest as follows: 25% of shares subject to the award will vest on February 25, 2027, and on each February 25th thereafter until all shares subject to the award are fully vested.

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:16 UTC
Schumacher DanielChief Financial Officer
GrantEmployee Stock Option (right to buy) · Derivative 5,605 $0.00 Strike: $62.63 $0.00
Disclosure

SEC source: 0001628280-26-012832 · wk-form4_1772226994.xml · derivative · entry 3

Schumacher Daniel · CIK 0001894753 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,605

Underlying: Common Stock · 5,605 shares

Expires 2036-02-25

F2 · derivative.exercise_date: 25% of shares subject to the award will vest on February 25, 2027, and on each February 25th thereafter until all shares subject to the award are fully vested.

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February 25, 2026 Filed Feb 27, 2026 21:16 UTC
Schumacher DanielChief Financial Officer
Tax withholdingCommon Stock 504 $62.63 $31,565.52
Disclosure

SEC source: 0001628280-26-012832 · wk-form4_1772226994.xml · nonDerivative · entry 2

Schumacher Daniel · CIK 0001894753 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,274

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:16 UTC
Schumacher DanielChief Financial Officer
GrantCommon Stock 3,074 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-012832 · wk-form4_1772226994.xml · nonDerivative · entry 1

Schumacher Daniel · CIK 0001894753 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,778

F1 · shares: Restricted Stock Units that vest as follows: 25% of shares subject to the award will vest on February 25, 2027, and on each February 25th thereafter until all shares subject to the award are fully vested.

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:16 UTC
Krishna SureshDirector · President and CEO
GrantEmployee Stock Option (right to buy) · Derivative 24,383 $0.00 Strike: $62.63 $0.00
Disclosure

SEC source: 0001628280-26-012833 · wk-form4_1772227016.xml · derivative · entry 2

Krishna Suresh · CIK 0001488151 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,383

Underlying: Common Stock · 24,383 shares

Expires 2036-02-25

F2 · derivative.exercise_date: 25% of shares subject to the award will vest on February 25, 2027, and on each February 25th thereafter until all shares subject to the award are fully vested.

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:16 UTC
Krishna SureshDirector · President and CEO
GrantCommon Stock 13,373 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-012833 · wk-form4_1772227016.xml · nonDerivative · entry 1

Krishna Suresh · CIK 0001488151 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,394

F1 · shares: Restricted Stock Units that vest as follows: 25% of shares subject to the award will vest on February 25, 2027, and on each February 25th thereafter until all shares subject to the award are fully vested.

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:15 UTC
Kermisch MarcChief Technology & AI Officer
GrantEmployee Stock Option (right to buy) · Derivative 5,095 $0.00 Strike: $62.63 $0.00
Disclosure

SEC source: 0001628280-26-012829 · wk-form4_1772226945.xml · derivative · entry 2

Kermisch Marc · CIK 0001975999 · Chief Technology & AI Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,095

Underlying: Common Stock · 5,095 shares

Expires 2036-02-25

F2 · derivative.exercise_date: 25% of shares subject to the award will vest on February 25, 2027, and on each February 25th thereafter until all shares subject to the award are fully vested.

Read SEC document
February 25, 2026 Filed Feb 27, 2026 21:15 UTC
Kermisch MarcChief Technology & AI Officer
GrantCommon Stock 2,795 $0.00 $0.00
Disclosure

SEC source: 0001628280-26-012829 · wk-form4_1772226945.xml · nonDerivative · entry 1

Kermisch Marc · CIK 0001975999 · Chief Technology & AI Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,513

F1 · shares: Restricted Stock Units that vest as follows: 25% of shares subject to the award will vest on February 25, 2027, and on each February 25th thereafter until all shares subject to the award are fully vested.

Read SEC document
February 17, 2026 Filed Feb 18, 2026 21:37 UTC
Kenison Michael R.Chief Operations Officer
SaleCommon Stock 5,000 $66.46 $332,315.00
Disclosure

SEC source: 0001628280-26-009129 · wk-form4_1771450661.xml · nonDerivative · entry 2

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 25,302

F1 · kind: This transaction was executed pursuant to a Rule 10b5 1 trading plan adopted by the Reporting Person on August 15, 2025.

F2 · price: Reflects the weighted average price of 5,000 shares of common stock of Proto Labs Inc. sold by the reporting person in multiple transactions on February 17, 2026, with sale prices ranging from $66.01 to $66.87 per share. The reporting person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

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February 13, 2026 Filed Feb 18, 2026 21:37 UTC
Kenison Michael R.Chief Operations Officer
Tax withholdingCommon Stock 1,540 $67.52 $103,980.80
Disclosure

SEC source: 0001628280-26-009129 · wk-form4_1771450661.xml · nonDerivative · entry 1

Kenison Michael R. · CIK 0001870293 · Chief Operations Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,302

Read SEC document
February 13, 2026 Filed Feb 18, 2026 21:38 UTC
Schumacher DanielChief Financial Officer
Tax withholdingCommon Stock 1,267 $67.52 $85,547.84
Disclosure

SEC source: 0001628280-26-009131 · wk-form4_1771450693.xml · nonDerivative · entry 1

Schumacher Daniel · CIK 0001894753 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,704

Read SEC document
February 11, 2026 Filed Feb 12, 2026 21:48 UTC
Schumacher DanielChief Financial Officer
Exercise / conversionEmployee Stock Option (right to buy) · Derivative 3,135 $0.00 Strike: $33.84 $0.00
Disclosure

SEC source: 0001894753-26-000003 · form4-02122026_090244.xml · derivative · entry 3

Schumacher Daniel · CIK 0001894753 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,135 shares

Expires 2026-02-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: Fully vested.

Read SEC document
February 11, 2026 Filed Feb 12, 2026 21:48 UTC
Schumacher DanielChief Financial Officer
Exercise / conversionCommon Stock 3,135 $33.84 $106,088.40
Disclosure

SEC source: 0001894753-26-000003 · form4-02122026_090244.xml · nonDerivative · entry 2

Schumacher Daniel · CIK 0001894753 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,971

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.