| 2023-06-26 | Valentin Gapontsev Trust I | 10% Owner | Sell | 5,053 | $131.90 | $666,487.75 | - | → |
| 2023-06-20 | Ovtchinnikov Alexander | SVP, Chief Technology Officer | Sell | 3,822 | $135.85 | $519,218.70 | -5.5% | → |
| 2023-06-14 | Meurice Eric | Director | Sale+OE | 785 | $121.89 | $95,683.65 | -4.5% | → |
| 2023-06-08 | Valentin Gapontsev Trust I | 10% Owner | Sell | 8,250 | $112.30 | $926,495.80 | - | → |
| 2023-05-24 | Valentin Gapontsev Trust I | 10% Owner | Sell | 8,250 | $109.90 | $906,688.02 | - | → |
| 2023-05-24 | Desmond Jeanmarie F. | Director | Sell | 1,180 | $109.70 | $129,447.84 | -9.4% | → |
| 2023-05-08 | Valentin Gapontsev Trust I | - | Sell | 8,250 | $116.03 | $957,252.18 | - | → |
| 2023-04-24 | Valentin Gapontsev Trust I | - | Sell | 8,250 | $114.13 | $941,574.00 | - | → |
| 2023-04-10 | Valentin Gapontsev Trust I | - | Sell | 8,250 | $115.77 | $955,115.78 | - | → |
| 2023-03-24 | Valentin Gapontsev Trust I | - | Sell | 8,250 | $115.60 | $953,731.91 | - | → |
| 2023-03-08 | Valentin Gapontsev Trust I | - | Sell | 16,500 | $122.20 | $2,016,285.18 | -0.1% | → |
| 2023-03-01 | Burgomaster Thomas J | Chief Accounting Officer | Sell | 1,300 | $125.52 | $163,176.00 | -13.1% | → |
| 2023-02-14 | Shcherbakov Eugene A | CEO | Sale+OE | 3,000 | $120.00 | $360,000.00 | -5.0% | → |
| 2022-09-28 | Valentin Gapontsev Trust I | - | Sell | 5,000 | $85.34 | $426,678.80 | - | → |
| 2022-09-21 | Valentin Gapontsev Trust I | - | Sell | 5,000 | $89.08 | $445,420.00 | - | → |
| 2022-09-14 | Valentin Gapontsev Trust I | - | Sell | 5,000 | $87.72 | $438,592.19 | - | → |
| 2022-09-07 | Valentin Gapontsev Trust I | - | Sell | 5,000 | $88.14 | $440,718.78 | - | → |
| 2022-08-31 | Valentin Gapontsev Trust I | - | Sell | 5,000 | $91.59 | $457,954.29 | - | → |
| 2022-08-24 | Valentin Gapontsev Trust I | - | Sell | 5,000 | $95.68 | $478,383.76 | - | → |
| 2022-08-17 | Valentin Gapontsev Trust I | - | Sell | 5,000 | $99.53 | $497,667.06 | - | → |
| 2022-08-10 | Valentin Gapontsev Trust I | - | Sell | 5,000 | $101.77 | $508,850.00 | - | → |
| 2022-08-03 | Valentin Gapontsev Trust I | - | Sell | 5,000 | $102.97 | $514,834.30 | - | → |
| 2022-06-16 | Mammen Timothy PV | SVP, Chief Financial Officer | Buy | 3,000 | $83.54 | $250,620.00 | +5.9% | → |
| 2022-02-09 | Shcherbakov Eugene A | CEO | Sale+OE | 1,500 | $152.30 | $228,450.00 | -3.4% | → |
| 2022-01-03 | Samartsev Igor | SVP, Chief Technology Officer | Sell | 500 | $172.35 | $86,175.00 | -29.4% | → |
| 2021-10-01 | Samartsev Igor | SVP, Chief Technology Officer | Sell | 500 | $159.27 | $79,635.00 | -22.7% | → |
| 2021-09-16 | IP FIBRE DEVICES LTD | - | Sell | 4,039 | $171.13 | $691,194.07 | - | → |