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CASTLEARK MANAGEMENT LLC
> PTEN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 12/31/2022 | PATTERSON UTI ENERGY INC | PTEN | 164,820 | -729,390 | 2,775,569,000 | 2,765,125,000 | $16,840.00 |
| 09/30/2022 | PATTERSON UTI ENERGY INC | PTEN | 894,210 | 894,210 | 10,444,000 | 10,444,000 | $11.68 |
| 12/31/2021 | PATTERSON UTI ENERGY INC | PTEN | 0 | -80,130 | 0 | -796,000 | |
| 06/30/2021 | PATTERSON UTI ENERGY INC | PTEN | 80,130 | 80,130 | 796,000 | 796,000 | $9.93 |
| 09/30/2019 | PATTERSON UTI ENERGY INC | PTEN | 0 | -84,800 | 0 | -976,000 | |
| 06/30/2019 | PATTERSON UTI ENERGY INC | PTEN | 84,800 | 84,800 | 976,000 | 976,000 | $11.51 |
| 03/31/2018 | PATTERSON UTI ENERGY INC | PTEN | 0 | -586,795 | 0 | -13,502,000 | |
| 12/31/2017 | PATTERSON UTI ENERGY INC | PTEN | 586,795 | 168,165 | 13,502,000 | 4,736,000 | $23.01 |
| 09/30/2017 | PATTERSON UTI ENERGY INC | PTEN | 418,630 | 418,630 | 8,766,000 | 8,766,000 | $20.94 |
| 06/30/2017 | PATTERSON UTI ENERGY INC | PTEN | 0 | -121,640 | 0 | -2,952,000 | |
| 03/31/2017 | PATTERSON UTI ENERGY INC | PTEN | 121,640 | -64,360 | 2,952,000 | -2,055,000 | $24.27 |
| 12/31/2016 | PATTERSON UTI ENERGY INC | PTEN | 186,000 | -140,500 | 5,007,000 | -2,297,000 | $26.92 |
| 09/30/2016 | PATTERSON UTI ENERGY INC | PTEN | 326,500 | 209,300 | 7,304,000 | 4,805,000 | $22.37 |
| 06/30/2016 | PATTERSON UTI ENERGY INC | PTEN | 117,200 | 0 | 2,499,000 | 434,000 | $21.32 |
| 03/31/2016 | PATTERSON UTI ENERGY INC | PTEN | 117,200 | 117,200 | 2,065,000 | 2,065,000 | $17.62 |
| 12/31/2015 | PATTERSON UTI ENERGY INC | PTEN | 102,800 | 102,800 | 1,550,000 | 1,550,000 | $15.08 |
| 06/30/2015 | PATTERSON UTI ENERGY INC | PTEN | 0 | -105,200 | 0 | -1,975,000 | |
| 03/31/2015 | PATTERSON UTI ENERGY INC | PTEN | 105,200 | 105,200 | 1,975,000 | 1,975,000 | $18.77 |
| 12/31/2011 | PATTERSON UTI ENERGY INC | PTEN | 0 | -177,110 | 0 | -3,071,000 | |
| 09/30/2011 | PATTERSON UTI ENERGY INC | PTEN | 177,110 | -158,390 | 3,071,000 | -7,534,000 | $17.34 |
| 06/30/2011 | PATTERSON UTI ENERGY INC | PTEN | 335,500 | 120,300 | 10,605,000 | 4,280,000 | $31.61 |
| 03/31/2011 | PATTERSON UTI ENERGY INC | PTEN | 215,200 | 0 | 6,325,000 | 1,687,000 | $29.39 |
| 12/31/2010 | PATTERSON UTI ENERGY INC | PTEN | 215,200 | -86,200 | 4,638,000 | -510,000 | $21.55 |
| 09/30/2010 | PATTERSON UTI ENERGY INC | PTEN | 301,400 | 301,400 | 5,148,000 | 5,148,000 | $17.08 |
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