Insider filing · PRLB
Michael R. Kenison
Chief Operations Officer
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Proto Labs, Inc.
PRLB · Industrials · 7 filings in 24 months
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Michael R. Kenison sold $1.6M of Proto Labs (PRLB)
Executed May 11, disclosed May 13, 2 days later.
Value, as filed
$1.6M
23,463 sh across 5 lots
Executed
May 11
the trade date, as filed
Disclosed
May 13
2 days after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
–
purchases only
Returns are measured on stock purchases only.
The filer
MKMichael R. Kenison (Chief Operations Officer) filed 5 Form 4 reports in the trailing twelve months (0 purchases, 5 sales, 1 filed past the two-business-day deadline), most often in Proto Labs, Inc. (PRLB). The largest single filing was $1.6M of PRLB (23,463 sh across 5 lots, as filed), executed May 11.
The name
PRLBIndustrials · Proto Labs, Inc., together with its subsidiaries, operates as a digital manufacturer of custom parts in the United States and Europe
More Industrials filings→ Insider filings, newest first→ View the original filing at www.sec.gov→Other filings by Michael R. Kenison in PRLB
PRLBSALE
Proto Labs, Inc.
$332K5,000 sh × $66.46
Exec Feb 17
Filed Feb 18 · 5:30 PM ET PRLBSALE Proto Labs, Inc. $150K
2,500 sh × $60.00
Exec Feb 6
Filed Feb 9 · 5:30 PM ET PRLBSALE Proto Labs, Inc. $153K
3,048 sh × $50.17
Exec Nov 25 2025
Filed Nov 26 2025 · 5:30 PM ET PRLBSALE Proto Labs, Inc. $153K
3,048 sh × $50.17
Exec Nov 25 2025
Filed Dec 3 2025 · 5:30 PM ET †