Kenison Michael R., Chief Operations Officer of Proto Labs Inc. ($PRLB), sold shares on the open market four times in the last year, totaling nearly 788 thousand dollars. His most recent sale occurred on February 17, 2026. These sales rank 5,447th among 11,678 insiders in our database, where the average is 8.6 million dollars across about six transactions. He made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 25, 2026 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | A | Common Stock | 2415 | $0.00 | 27,717.0000 | 23,627,422 | 9.54% | 0.01% |
| Feb. 25, 2026 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | A | Employee Stock Option (right to buy) | 4404 | $0.00 | 4,404.0000 | 23,627,422 | 9999.99% | 0.02% |
| Feb. 25, 2026 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | F | Common Stock | 531 | $62.63 | 27,186.0000 | 23,627,422 | 1.92% | 0.00% |
| Feb. 13, 2026 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | F | Common Stock | 1540 | $67.52 | 30,302.0000 | 23,627,422 | 4.84% | 0.01% |
| Feb. 17, 2026 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | S | Common Stock | 5000 | $66.46 | 25,302.0000 | 23,627,422 | 16.50% | 0.02% |
| Feb. 10, 2026 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | F | Common Stock | 2684 | $53.18 | 31,842.0000 | 23,627,422 | 7.77% | 0.01% |
| Feb. 6, 2026 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | S | Common Stock | 2500 | $60.00 | 34,526.0000 | 23,627,422 | 6.75% | 0.01% |
| Jan. 29, 2026 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | A | Common Stock | 8128 | $0.00 | 37,026.0000 | 23,627,422 | 28.13% | 0.03% |
| Nov. 25, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | M | Common Stock | 3048 | $33.84 | 31,946.0000 | 23,677,746 | 10.55% | 0.01% |
| Nov. 25, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | S | Common Stock | 3048 | $50.17 | 28,898.0000 | 23,677,746 | 9.54% | 0.01% |
| Nov. 25, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | M | Employee Stock Option (right to buy) | 3048 | $0.00 | 0.0000 | 23,677,746 | 100.00% | 0.01% |
| Nov. 25, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | M | Employee Stock Option (right to buy) | 3048 | $0.00 | 4,664.0000 | 23,677,746 | 39.52% | 0.01% |
| Nov. 25, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | M | Common Stock | 3048 | $33.84 | 31,946.0000 | 23,677,746 | 10.55% | 0.01% |
| Nov. 25, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | S | Common Stock | 3048 | $50.17 | 28,898.0000 | 23,677,746 | 9.54% | 0.01% |
| May 20, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | F | Common Stock | 204 | $40.87 | 28,841.0000 | 23,770,640 | 0.70% | 0.00% |
| Feb. 25, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | A | Common Stock | 6943 | $0.00 | 28,982.0000 | 24,226,088 | 31.50% | 0.03% |
| Feb. 25, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | A | Employee Stock Option (right to buy) | 6231 | $0.00 | 6,231.0000 | 24,226,088 | 9999.99% | 0.03% |
| Feb. 13, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | F | Common Stock | 580 | $45.03 | 23,735.0000 | 24,226,088 | 2.39% | 0.00% |
| Feb. 13, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | F | Common Stock | 1696 | $45.03 | 22,039.0000 | 24,226,088 | 7.15% | 0.01% |
| Feb. 13, 2025 | Proto Labs Inc | $PRLB | Kenison Michael R. | Chief Operations Officer | A | Common Stock | 1894 | $0.00 | 24,315.0000 | 24,226,088 | 8.45% | 0.01% |
| May 20, 2024 | Proto Labs Inc | $PRLB | Kenison Michael R. | VP and GM of the America's | F | Common Stock | 336 | $31.81 | 22,351.0000 | 25,316,070 | 1.48% | 0.00% |
| Feb. 13, 2024 | Proto Labs Inc | $PRLB | Kenison Michael R. | VP and GM of the America's | A | Common Stock | 8205 | $0.00 | 22,405.0000 | 25,721,957 | 57.78% | 0.03% |
| Feb. 13, 2024 | Proto Labs Inc | $PRLB | Kenison Michael R. | VP and GM of the America's | A | Employee Stock Option (right to buy) | 7555 | $0.00 | 7,555.0000 | 25,721,957 | 9999.99% | 0.03% |
| Feb. 13, 2024 | Proto Labs Inc | $PRLB | Kenison Michael R. | VP and GM of the America's | F | Common Stock | 1070 | $33.52 | 14,200.0000 | 25,721,957 | 7.01% | 0.00% |