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| 30 Nov 2023 | VECOVeeco Instruments Inc | Dennis Thomas St | Sale | 7,005 | $28.52 | $199,783 30 Nov 2023 | 52,184 | ↗ |
| 13 May 2022 | VECOVeeco Instruments Inc | Dennis Thomas St | Buy | 2,500 | $21.60 | $54,000 13 May 2022 | 52,429 | ↗ |
| 14 Nov 2023 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 3,792 | $38.24 | $145,006 14 Nov 2023 | 38,701 | ↗ |
| 16 Feb 2023 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 13,000 | $32.31 | $420,030 16 Feb 2023 | 30,890 | ↗ |
| 14 May 2022 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 3,792 | $39.38 | $149,329 14 May 2022 | 43,890 | ↗ |
| 8 Feb 2022 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 6,000 | $41.63 | $249,780 8 Feb 2022 | 40,098 | ↗ |
| 14 May 2021 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 7,098 | $33.80 | $239,912 14 May 2021 | 46,098 | ↗ |
| 15 May 2020 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 9,000 | $23.24 | $209,160 15 May 2020 | 39,000 | ↗ |
| 11 May 2020 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 6,000 | $24.78 | $148,680 11 May 2020 | 30,000 | ↗ |
| 10 Feb 2020 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 10,000 | $25.94 | $259,400 10 Feb 2020 | 36,000 | ↗ |
| 20 Nov 2019 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 5,000 | $22.68 | $113,400 20 Nov 2019 | 46,000 | ↗ |
| 20 Aug 2019 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 3,000 | $17.26 | $51,780 20 Aug 2019 | 51,000 | ↗ |
| 17 May 2019 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 9,000 | $15.72 | $141,480 17 May 2019 | 54,000 | ↗ |
| 20 Feb 2019 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 8,000 | $15.99 | $127,920 20 Feb 2019 | 45,000 | ↗ |
| 26 May 2018 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 12,334 | $13.55 | $167,126 26 May 2018 | 53,000 | ↗ |
| 6 Mar 2018 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 20,867 | $10.37 | $216,391 6 Mar 2018 | 61,533 | ↗ |
| 14 Jun 2017 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 400 | $10.37 | $4,148 14 Jun 2017 | 41,066 | ↗ |
| 28 May 2017 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 3,333 | $14.40 | $47,995 28 May 2017 | 197,266 | ↗ |
| 26 May 2017 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 285,333 | $14.61 | $4,168,715 26 May 2017 | 40,666 | ↗ |
| 11 May 2017 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 13,962 | $7.52 | $104,994 11 May 2017 | 198,895 | ↗ |
| 5 May 2017 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 82,088 | $5.69 | $467,081 5 May 2017 | 247,021 | ↗ |
| 22 Feb 2017 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 20,297 | $7.52 | $152,633 22 Feb 2017 | 167,633 | ↗ |
| 16 Feb 2017 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 196,682 | $7.52 | $1,479,049 16 Feb 2017 | 172,301 | ↗ |
| 13 Feb 2017 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 156,971 | $7.52 | $1,180,422 13 Feb 2017 | 223,103 | ↗ |
| 5 Aug 2016 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 23,120 | $10.51 | $242,991 5 Aug 2016 | 164,933 | ↗ |
| 31 May 2016 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 3,333 | $7.17 | $23,898 31 May 2016 | 188,053 | ↗ |
| 5 May 2016 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 40,000 | $6.84 | $273,600 5 May 2016 | 184,720 | ↗ |
| 2 May 2016 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 116,600 | $7.33 | $854,678 2 May 2016 | 144,720 | ↗ |
| 2 May 2016 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 116,600 | $7.33 | $854,678 2 May 2016 | 144,720 | ↗ |
| 21 May 2015 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 130,000 | $8.91 | $1,158,300 21 May 2015 | 28,120 | ↗ |
| 6 May 2015 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 20,000 | $8.34 | $166,800 6 May 2015 | 168,726 | ↗ |
| 5 May 2015 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 20,000 | $8.19 | $163,800 5 May 2015 | 159,333 | ↗ |
| 8 Apr 2015 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 180,000 | $9.30 | $1,674,000 8 Apr 2015 | 232,115 | ↗ |
| 5 Mar 2015 | FORMFormFactor Inc. | Dennis Thomas St Director | Sale | 90,000 | $9.16 | $824,400 5 Mar 2015 | 52,115 | ↗ |
| 27 Feb 2015 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 35,494 | $9.82 | $348,551 27 Feb 2015 | 155,663 | ↗ |
| 10 Feb 2015 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 23,513 | $2.48 | $58,312 10 Feb 2015 | 120,169 | ↗ |
| 15 Sep 2014 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 15,000 | $7.67 | $115,050 15 Sep 2014 | 110,348 | ↗ |
| 8 Aug 2014 | FORMFormFactor Inc. | Dennis Thomas St Director | Buy | 5,000 | $6.84 | $34,200 8 Aug 2014 | 95,348 | ↗ |
| 6 May 2014 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 20,000 | $6.00 | $120,000 6 May 2014 | 100,252 | ↗ |
| 5 May 2014 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 5,000 | $6.05 | $30,250 5 May 2014 | 80,252 | ↗ |
| 27 Feb 2014 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 35,494 | $7.19 | $255,202 27 Feb 2014 | 88,780 | ↗ |
| 10 Feb 2014 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 16,667 | $6.34 | $105,669 10 Feb 2014 | 60,276 | ↗ |
| 13 Sep 2013 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 15,000 | $7.24 | $108,600 13 Sep 2013 | 49,298 | ↗ |
| 6 May 2013 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 5,000 | $5.06 | $25,300 6 May 2013 | 36,166 | ↗ |
| 11 Feb 2013 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 16,666 | $4.89 | $81,497 11 Feb 2013 | 38,666 | ↗ |
| 13 Sep 2012 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 15,000 | $5.47 | $82,050 13 Sep 2012 | 27,560 | ↗ |
| 4 May 2012 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 5,000 | $6.24 | $31,200 4 May 2012 | 14,448 | ↗ |
| 13 Sep 2011 | FORMFormFactor Inc. | Dennis Thomas St Director | Option | 15,000 | $7.43 | $111,450 13 Sep 2011 | 15,000 | ↗ |
| 13 Feb 2023 | ACLSAxcelis Technologies Inc | Dennis Thomas St Director | Sale | 12,000 | $127.02 | $1,524,240 13 Feb 2023 | 10,625 | ↗ |
| 18 Nov 2022 | ACLSAxcelis Technologies Inc | Dennis Thomas St Director | Sale | 3,000 | $76.66 | $229,980 18 Nov 2022 | 22,625 | ↗ |
| 10 Feb 2022 | ACLSAxcelis Technologies Inc | Dennis Thomas St Director | Sale | 3,000 | $72.81 | $218,430 10 Feb 2022 | 22,936 | ↗ |
| 30 Aug 2021 | ACLSAxcelis Technologies Inc | Dennis Thomas St Director | Sale | 3,500 | $50.32 | $176,120 30 Aug 2021 | 25,936 | ↗ |
| 11 May 2020 | ACLSAxcelis Technologies Inc | Dennis Thomas St Director | Sale | 6,000 | $26.61 | $159,660 11 May 2020 | 19,058 | ↗ |
| 10 Feb 2020 | ACLSAxcelis Technologies Inc | Dennis Thomas St Director | Sale | 8,500 | $28.27 | $240,295 10 Feb 2020 | 25,058 | ↗ |
| 20 Feb 2019 | ACLSAxcelis Technologies Inc | Dennis Thomas St Director | Sale | 5,000 | $22.43 | $112,150 20 Feb 2019 | 27,326 | ↗ |