Arthur R. Baker III, Chief Technology Officer at Proto Labs Inc (PRLB), sold 3,976 shares at $115.07 ($458K) on 2020-05-18, disclosed to the SEC on 2020-05-20.
Open-market sale of $458k PRLB by Chief Technology Officer. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $115.07 | 1,988 | $229K | 50.0% |
| 2 | $115.07 | 1,988 | $229K | 50.0% |
| Total | $115.07 avg | 3,976 | $458K | 100% |
| Filing → |
| PRLB | SELL | 2018-09-11 | $1.1M | — | Filing → |
| PRLB | BUY | 2016-09-06 | $165K | — | Filing → |
| MTSC | SELL | 2014-02-18 | $777K | — | Filing → |