Arkolith/Insider Trading/PRLB/Form 4

Kenison Michael R.

Chief Operations OfficerProto Labs Inc (PRLB) · full profile →Form 4 · filed May 8, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$14K
Net Open-Market Flow
-$14K
Transactions
5
3 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
May 7, 2026Option exercise(M)100$33.84$3K27K
May 7, 2026Option exercise(M)100$33.52$3K27K
May 7, 2026Sell(S)200$70.00$14K27K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
May 7, 2026Option exercise(M)100—$08K
May 7, 2026Option exercise(M)100—$07K

Transaction Codes

M
Option exercise / conversion
S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001628280-26-032958) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML