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Proto Labs Inc. planned insider sales

In the twelve months since 11 October 2025 insiders at Proto Labs Inc. filed 18 Form 144 notices of planned sales, 91,553 shares worth $6.1 million at the time of filing, from 5 sellers. The latest, filed 25 September 2026: Michael R Kenison (former officer), 1,143 shares worth $109,494, planned for around 25 September 2026 through Morgan Stanley Smith Barney LLC Executive Financial Services.

FiledSellerRelationshipSharesValuePlanned saleBrokerHow acquiredFiling
25 September 2026Michael R KenisonFormer Officer1,143$109,49425 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Options Under a Registered PlanForm 144
24 September 2026Michael R KenisonFormer Officer1,800$172,53424 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Options Under a Registered PlanForm 144
24 September 2026Daniel SchumacherOfficer5,000$445,65024 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
17 September 2026Daniel SchumacherOfficer4,900$407,87617 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
16 September 2026Daniel SchumacherOfficer100$7,90916 September 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
4 August 2026Michael R KenisonFormer Officer10,753$947,7874 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock Vesting Under a Registered Plan; Shares Purchased Through Employee Stock Purchase PlanForm 144
1 June 2026Wehrwein SvenDirector2,000$151,9001 June 2026FIDELITY BROKERAGE SERVICES, LLCStock AwardForm 144
12 May 2026Michael R KenisonOfficer16,030$1.1 million12 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of options under a registered plan; Restricted stock vesting under a registered planForm 144
11 May 2026Michael KenisonOfficer7,433$515,10711 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
7 May 2026Michael KenisonOfficer200$13,7787 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
6 February 2026Michael KenisonOfficer7,500$393,6006 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted Stock UnitsForm 144
16 January 2026Oleg RyaboyFormer Officer368$20,16916 January 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesShares Purchased through Employee Stock Purchase PlanForm 144
15 January 2026Oleg RyaboyFormer Officer7,178$393,33015 January 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of options under a registered planForm 144
8 January 2026Oleg RyaboyFormer Officer7,026$384,4148 January 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of options under a registered planForm 144
7 January 2026Oleg RyaboyFormer Officer6,669$357,3277 January 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of options under a registered planForm 144
25 November 2025Oleg RyaboyFormer Officer695$34,68725 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesShares Purchased through Employee Stock Purchase PlanForm 144
25 November 2025Michael KenisonOfficer3,048$150,14425 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
7 November 2025Oleg RyaboyFormer Officer9,710$471,6297 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesRestricted stock vesting under a registered plan; Shares Purchased through Employee Stock Purchase PlanForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Whether the sale happened shows up later on Form 4, on the insiders page.

Source

Form 144 filings on EDGAR for Proto Labs Inc.: the company's filing index, each notice read from its own XML.

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