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PRLB · Proto Labs Inc

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TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475

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PRLB

Name: Proto Labs Inc (PRLB) insider trading and ownership data
Creator: WaveMan
License: https://wave-man.com/terms

Proto Labs Inc

INDUSTRIALS · FABRICATED STRUCTURAL METAL PRODUCTS · CIK 0001443669

FORM 144 · 1☆ WATCH

INSIDER NET · 180D

-$1.8M

open-market buys minus sells, Form 4 codes P and S

INSIDER BUYERS · 180D

CONGRESS BUYERS · 1Y

FUNDS ADDED · QTR

147

13F, latest reported quarter

REVENUE GROWTH

+6.4%

XBRL, annual

NET MARGIN

4.0%

CONVERSIONS · 180D

codes C/M, not in net · $624.1K priced

SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST

INSIDERS

net -$1.8M over 180 days

below 55% of Industrials

CONGRESS

no member of Congress has reported trading it

FUNDS

147 funds added or opened last quarter

more than 52% of Industrials

REVENUE

+6.4% year over year

more than 52% of Industrials

MARGIN

4.0% net margin

more than 53% of Industrials

BUYBACKS

$5.0M repurchased, FY to 2026-06-30

below 79% of Industrials

SHORT

no short interest reported

THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET

147 funds added or opened positions in the latest 13F quarter, of 278 holders.

The year, with the filings on it

Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail

TOTAL 12M RETURN +60.1%

+60.1%12M

INSIDER SELLFORM 144

INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY

Live price

Daily candles from TradingView, on their licence — no filings are marked on this one

WHY THIS NAME IS ON THE DESK

Insiders have filed to sell — before selling.

The record shows a net $1.8M sold by insiders over 180 days, 147 funds added last quarter, $947.8K in planned Form 144 sales. Every figure is a federal filing, dated the day it became public.

Backtest this pattern Open the screener

Same sector, ranked by filing activity

Sector from the SEC's own SIC classification

DELL ANET TDG TSLA PANW AXON STX KTOS CRCT OFLX JOBY FTNT

Insider transactions

Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, Proto Labs Inc insiders sold a net $1.8M of stock across 17 Form 4 purchases and sales, with 0 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-04.

INSIDER

FILED

VALUE

WEHRWEIN SVEN

Director

SELL

2026-06-02

1,500.0

$115.4K

WEHRWEIN SVEN

Director

SELL

2026-06-02

500.0

$39.2K

Kenison Michael R.

Chief Operations Officer

SELL

2026-05-12

6,643.0

$467.0K

Kenison Michael R.

Chief Operations Officer

SELL

2026-05-12

1,613.0

$109.0K

Kenison Michael R.

Chief Operations Officer

SELL

2026-05-12

4,198.0

$288.4K

17 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 12 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders

13F · holdings as of the latest quarter funds have reported

BlackRock, Inc.

3,896,222.0 sh

$317.6M

DISCIPLINED GROWTH INVESTORS INC /MN

2,380,514.0 sh

$194.0M

VANGUARD PORTFOLIO MANAGEMENT LLC

1,599,765.0 sh

$130.4M

DIMENSIONAL FUND ADVISORS LP

1,152,305.0 sh

$93.9M

STATE STREET CORP

1,138,462.0 sh

$92.8M

SCHEDULE 13D/G

No 5%+ ownership filings

Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.

Planned sales · Form 144

Filed before the sale — intent, not a trade

MICHAEL R KENISON

FILED 2026-08-04

$947.8K

Fund concentration

N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show

The 3D Printing ETF

$2.3M POSITION · AS OF 2026-04-30

3.8%

The Disciplined Growth Investors Equity Fund

$3.9M POSITION · AS OF 2026-04-30

2.6%

The Disciplined Growth Investors Fund

$15.2M POSITION · AS OF 2026-04-30

2.5%

Cultivar ETF

$742.7K POSITION · AS OF 2026-04-30

1.9%

ALPS Disruptive Technologies ETF

$1.1M POSITION · AS OF 2026-02-28

1.4%

Zacks Small-Cap Core Fund

$397.3K POSITION · AS OF 2026-02-28

1.3%

SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK

Fundamentals

Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all

	2025-12	2024-12	2023-12	2022-12
REVENUE	$533.1M	$500.9M	$503.9M	$488.4M
GROSS PROFIT	$237.1M	$223.2M	$222.0M	$215.5M
OPERATING INCOME	$25.1M	$19.9M	$28.2M	$-98.0M
NET INCOME	$21.2M	$16.6M	$17.2M	$-103.5M
EPS (DILUTED)	0.88	0.66	0.66	-3.77
OPERATING CASH FLOW	$74.5M	$77.8M	$73.3M	$62.1M
CASH	$110.8M	$89.1M	$83.8M	$56.6M
BUYBACKS	$43.0M	$60.3M	$44.0M	$29.7M

SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-04 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE