PRLB Forms 3, 4 and 5: Stock Options

Proto Labs Inc Forms 3, 4 and 5: Stock Options

Statements of beneficial ownership filed with the SEC by officers, directors and 10% owners: 13 rows in 2026. Transaction codes are the SEC's. Shares and prices are split-adjusted; the as-filed figure is underneath.

2026-05-20: Reporting owner Parlange Bernardo; Form 4; Security Employee Stock Option (right to buy); Transaction A Grant, award or other acquisition pursuant to Rule 16b-3(d).
2026-05-12: Reporting owner Kenison Michael R.; Form 4; Security Employee Stock Option (right to buy); Transaction M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3.
2026-05-12: Reporting owner Kenison Michael R.; Form 4; Security Employee Stock Option (right to buy); Transaction M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3.
2026-05-12: Reporting owner Kenison Michael R.; Form 4; Security Employee Stock Option (right to buy); Transaction M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3.

All rows

PRLB insiders transactions against the stock price

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

Logarithmic scale. Both lines share the same starting value for the selected range.

Markers: each transaction type positioned at that session's split-adjusted close. Tooltips retain the reported transaction price when available.

Transaction date	Reporting owner	Form	Security	Transaction	Shares	Price	Price that day	Filing
2026-05-20	Parlange Bernardo Officer (Chief Commercial Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	A Grant, award or other acquisition pursuant to Rule 16b-3(d)	+3,789 3,789 owned after	$71.13 exercise price	$71.13	2026-05-22
2026-05-12	Kenison Michael R. Officer (Chief Operations Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3	−1,928 1,928 owned after	$33.84 exercise price	$71.02	2026-05-13
2026-05-12	Kenison Michael R. Officer (Chief Operations Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3	−1,557 4,674 owned after	$39.61 exercise price	$71.02	2026-05-13
2026-05-12	Kenison Michael R. Officer (Chief Operations Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3	−4,042 0 owned after	$59.40 exercise price	$71.02	2026-05-13
2026-05-11	Kenison Michael R. Officer (Chief Operations Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3	−3,756 3,856 owned after	$33.84 exercise price	$70.95	2026-05-13
2026-05-11	Kenison Michael R. Officer (Chief Operations Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3	−3,677 3,778 owned after	$33.52 exercise price	$70.95	2026-05-13
2026-05-07	Kenison Michael R. Officer (Chief Operations Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3	−100 7,612 owned after	$33.84 exercise price	$68.17	2026-05-08
2026-05-07	Kenison Michael R. Officer (Chief Operations Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3	−100 7,455 owned after	$33.52 exercise price	$68.17	2026-05-08
2026-02-25	Krishna Suresh Director, Officer (President and CEO)	4	Employee Stock Option (right to buy) Derivative · Direct	A Grant, award or other acquisition pursuant to Rule 16b-3(d)	+24,383 24,383 owned after	$62.63 exercise price	$62.63	2026-02-27
2026-02-25	Schumacher Daniel Officer (Chief Financial Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	A Grant, award or other acquisition pursuant to Rule 16b-3(d)	+5,605 5,605 owned after	$62.63 exercise price	$62.63	2026-02-27
2026-02-25	Kenison Michael R. Officer (Chief Operations Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	A Grant, award or other acquisition pursuant to Rule 16b-3(d)	+4,404 4,404 owned after	$62.63 exercise price	$62.63	2026-02-27
2026-02-25	Kermisch Marc Officer (Chief Technology & AI Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	A Grant, award or other acquisition pursuant to Rule 16b-3(d)	+5,095 5,095 owned after	$62.63 exercise price	$62.63	2026-02-27
2026-02-11	Schumacher Daniel Officer (Chief Financial Officer)	4	Employee Stock Option (right to buy) Derivative · Direct	M Exercise or conversion of derivative security exempted pursuant to Rule 16b-3	−3,135 0 owned after	$33.84 exercise price	$67.15	2026-02-12

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