Updated: May 18, 2026

Arthur R. Baker III

PRLBProto Labs IncSEC CIK: 0001536324
Estimated Net Worth
$2.03 Million
Last Updated: May 18, 2026 10:52 PM EST

Transaction Summary

Total Transactions21
Buy-Sell Ratio0.67
Buy Transactions2
Sell Transactions3

Transaction Volume

Total Volume-$1.39M
Net Volume$2.70M
Buy Volume$657.10K
Sell Volume-$2.05M

Trade Analysis

AVG Trade Size-$49.32K
Largest Trade$492.10K
Most Active MonthFeb
Most Active Year2020

Trading Sentiment

OverallBullish
Recent TradeNeutral
Last 90 Days0 Trades
ConvictionNone

Net Worth & Trading Activity Over Time

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Monthly Trading Pattern

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Past Insider Trading and Trends

Arthur R. Baker III has an estimated net worth of $2.03 Million. This is based on reported shares across multiple companies, which include Proto Labs Inc, and MTS SYSTEMS CORP.



2021 was Arthur R. Baker III's most active year for acquiring shares with 5 total transactions. Arthur R. Baker III's most active month to acquire stocks was the month of January. 2021 was Arthur R. Baker III's most active year for disposing of shares, totalling 11 transactions. Arthur R. Baker III's most active month to dispose stocks was the month of January. 2021 saw Arthur R. Baker III paying a total of $915,568.84 for 24,756 shares, this is the most they've acquired in one year. In 2018 Arthur R. Baker III cashed out on 7,342 shares for a total of $579,756.45, their largest year based on trade value.

Holdings & Transactions

PRLBproto labs inc
Chief Technology Officer Officer
Updated: Feb 17, 2022VIEW QUOTE
Form TypeSEC Filing
0.4513.74K$56.34-$78.20K44.54KFeb 15 - 17View
0.4910.00K$49.21$492.10K30.61KDec 01View
-0.02375.00$102.75-$38.53K20.61KMay 04View
-0.092.54K$123.86-$1.49M27.07KFeb 16View
-0.091.99K$115.07-$228.75K19.86KMay 18View
-0.01252.00$94.22-$23.74K21.59KMay 04View
-0.04838.00$100.00-$83.80K21.85KFeb 13View
0.346.74K26.35KFeb 10View
-0.01252.00$110.55-$27.86K19.12KMay 04View
0.366.03K22.58KFeb 11View
-0.143.47K$107.89-$326.04K21.76KSep 04View
-0.02274.00$59.75-$16.37K16.55KMay 08View
-0.02394.00$106.45-$41.94K16.82KFeb 13View
0.426.03K$105.75$297.05K20.43KFeb 12View
1.5410.96K$58.35$375.19K18.07KFeb 13View
0.733.00K$55.00$165.00K7.11KSep 01View
12.79K12.79KMay 02View
View
mts systems corp
Senior Vice President, Test Officer
Updated: Oct 24, 2012
Form TypeSEC Filing
From 3/A4.11KView
-0.03182.00$38.55-$7.02K6.01KJun 29View
4.93KView