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
| Month | Purchases | Sales |
|---|---|---|
| Nov 2025 | 0 | 2 |
| Dec 2025 | 0 | 0 |
| Jan 2026 | 0 | 0 |
| Feb 2026 | 0 | 2 |
| Mar 2026 | 0 | 0 |
| Apr 2026 | 0 | 0 |
| May 2026 | 0 | 6 |
| Jun 2026 | 0 | 2 |
| Jul 2026 | 0 | 0 |
| Aug 2026 | 0 | 0 |
| Sep 2026 | 0 | 3 |
| Oct 2026 | 0 | 0 |
Latest available
Insider transactions
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 date | Owner / reported role | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| September 24, 2026 Filed Sep 25, 2026 20:11 UTC |
Schumacher DanielChief Financial Officer
|
SaleCommon Stock | 5,000 | $95.32 | $476,604.50 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
WEHRWEIN SVENDirector
|
SaleCommon Stock | 500 | $78.38 | $39,190.00 |
DisclosureSEC 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 |
WEHRWEIN SVENDirector
|
SaleCommon Stock | 1,500 | $76.91 | $115,360.05 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
Black Archie C.Director
|
GrantCommon Stock | 2,210 | $0.00 | $0.00 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
Gawlick RainerDirector
|
GrantCommon Stock | 2,210 | $0.00 | $0.00 |
DisclosureSEC 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 |
WEHRWEIN SVENDirector
|
GrantCommon Stock | 2,210 | $0.00 | $0.00 |
DisclosureSEC 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 |
KRANTZ DONALD GDirector
|
GrantCommon Stock | 2,210 | $0.00 | $0.00 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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. Read SEC document |
| February 25, 2026 Filed Feb 27, 2026 21:16 UTC |
Schumacher DanielChief Financial Officer
|
Tax withholdingCommon Stock | 504 | $62.63 | $31,565.52 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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. Read SEC document |
| 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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 |
DisclosureSEC 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.