Insider Trading History of Baker Arthur R. Iii

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) of Baker Arthur R. Iii since 2012. This trader's CIK number is 1536324. At the time of last reporting, Baker Arthur R. Iii was the Chief Technology Officer of Proto Labs Inc. (stock ticker symbol PRLB). Also see all insider trading activities at Proto Labs Inc.

Note that in the past Baker Arthur R. III also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Proto Labs Inc (PRLB) by Baker Arthur R. Iii

Insider Buying Insider Sales Option Exercises
Year Symbol Shares Value Shares Value Shares Value
2021 PRLB 10,000 $492,100 9,102 $1,691,907 7,102 $423,669
2020 PRLB 0 $0 1,988 $228,751 0 $0
2018 PRLB 0 $0 3,474 $537,816 3,474 $211,775
2016 PRLB 3,000 $165,000 0 $0 0 $0

Yearly summary of insider trading at Mts Systems Corp (MTSC) by Baker Arthur R. Iii

Insider Buying Insider Sales Option Exercises
Year Symbol Shares Value Shares Value Shares Value
2014 MTSC 0 $0 10,705 $776,797 0 $0
2013 MTSC 0 $0 3,368 $202,046 2,283 $0
2012 MTSC 0 $0 6,373 $339,742 9,616 $287,040


Insider trading activities at 2 companies by Baker Arthur R. Iii:

1. Proto Labs Inc (PRLB)

2. Mts Systems Corp (MTSC)

Table 1. Insider trading of Proto Labs Inc (PRLB) by Baker Arthur R. Iii

Trade Date Symbol Trade Type Shares Price ($) Value ($)
2021-12-01 PRLB Buy 10,000 49.21 492,100
2021-02-16 PRLB Sale 9,102 185.88 1,691,907
2021-02-16 PRLB Option Ex 7,102 59.66 423,669
2020-05-18 PRLB Sale 1,988 115.07 228,751
2018-09-04 PRLB Option Ex 3,474 60.96 211,775
2018-09-04 PRLB Sale 3,474 154.81 537,816
2016-09-01 PRLB Buy 3,000 55.00 165,000

Table 2. Insider trading of Mts Systems Corp (MTSC) by Baker Arthur R. Iii

Trade Date Symbol Trade Type Shares Price ($) Value ($)
2014-02-13 MTSC Sale 10,705 72.56 776,797
2013-09-15 MTSC Option Ex 726 .00 0
2013-09-10 MTSC Sale 3,368 59.99 202,046
2013-07-05 MTSC Option Ex 500 .00 0
2013-07-06 MTSC Option Ex 390 .00 0
2013-07-02 MTSC Option Ex 667 .00 0
2012-10-01 MTSC Option Ex 8,000 35.88 287,040
2012-10-01 MTSC Sale 6,273 54.00 338,742
2012-09-15 MTSC Option Ex 726 .00 0
2012-07-05 MTSC Option Ex 500 .00 0
2012-07-06 MTSC Option Ex 390 .00 0
2012-06-29 MTSC Sale 100 10.00 1,000

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Baker Arthur R. Iii (Chief Technology Officer of Proto Labs Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.



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