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Ultra Petroleum Corp
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4 | 122 | |
SC 13G/A | 27 | |
SC 13G | 17 | |
3 | 15 | |
SC 13D/A | 11 | |
4/A | 8 | |
3/A | 2 | |
SC 13D | 2 | |
5/A | 1 |