| SC 13G/A | 2019-10-10 | ORBIS INVESTMENT MANAGEMENT LTD | Alta Mesa Resources, Inc. /DE | - | 13.5% | EDGAR |
| SC 13D/A | 2019-08-13 | HPS Investment Partners, LLC | Alta Mesa Resources, Inc. /DE | 88,298,940 | 33.4% | EDGAR |
| SC 13G/A | 2019-02-14 | Point72 Asset Management, L.P. | Alta Mesa Resources, Inc. /DE | 6,700,000 | 3.8% | EDGAR |
| SC 13G/A | 2019-02-14 | HIGHFIELDS CAPITAL MANAGEMENT LP | Alta Mesa Resources, Inc. /DE | 1,531,894 | 0.9% | EDGAR |
| SC 13G/A | 2019-02-14 | ORBIS INVESTMENT MANAGEMENT LTD | Alta Mesa Resources, Inc. /DE | - | 19.1% | EDGAR |
| SC 13G/A | 2019-02-14 | Alyeska Investment Group, L.P. | Alta Mesa Resources, Inc. /DE | 0 | 0.0% | EDGAR |
| SC 13G/A | 2019-01-10 | WELLINGTON MANAGEMENT GROUP LLP | Alta Mesa Resources, Inc. /DE | 3,670,511 | 2.1% | EDGAR |
| SC 13G/A | 2018-09-12 | WELLINGTON MANAGEMENT GROUP LLP | Alta Mesa Resources, Inc. /DE | 13,886,073 | 7.7% | EDGAR |
| SC 13G/A | 2018-09-07 | WELLINGTON MANAGEMENT GROUP LLP | Alta Mesa Resources, Inc. /DE | 13,886,073 | 7.7% | EDGAR |
| SC 13D/A | 2018-08-22 | BAYOU CITY ENERGY MANAGEMENT LLC | Alta Mesa Resources, Inc. /DE | 84,706,140 | 18.7% | EDGAR |
| SC 13D/A | 2018-08-17 | BAYOU CITY ENERGY MANAGEMENT LLC | Alta Mesa Resources, Inc. /DE | 81,305,340 | 17.9% | EDGAR |
| SC 13G/A | 2018-08-03 | ORBIS INVESTMENT MANAGEMENT LTD | Alta Mesa Resources, Inc. /DE | - | 16.6% | EDGAR |
| SC 13D | 2018-06-12 | BAYOU CITY ENERGY MANAGEMENT LLC | Alta Mesa Resources, Inc. /DE | 81,305,340 | 18.3% | EDGAR |
| SC 13D | 2018-06-12 | High Mesa Holdings, LP | Alta Mesa Resources, Inc. /DE | 184,082,096 | 49.4% | EDGAR |
| SC 13D/A | 2018-06-11 | HPS Investment Partners, LLC | Alta Mesa Resources, Inc. /DE | 80,014,779 | 31.9% | EDGAR |
| SC 13D | 2018-03-21 | HPS Investment Partners, LLC | Alta Mesa Resources, Inc. /DE | 28,717,435 | 14.5% | EDGAR |
| SC 13G | 2018-03-13 | Point72 Asset Management, L.P. | Alta Mesa Resources, Inc. /DE | 8,542,648 | 5.0% | EDGAR |
| SC 13D | 2018-02-20 | Silver Run Sponsor II, LLC | Alta Mesa Resources, Inc. /DE | 26,264,906 | 14.7% | EDGAR |
| SC 13G/A | 2018-02-14 | HIGHFIELDS CAPITAL MANAGEMENT LP | Alta Mesa Resources, Inc. /DE | 7,508,999 | 7.3% | EDGAR |
| SC 13G/A | 2018-02-14 | ORBIS INVESTMENT MANAGEMENT LTD | Alta Mesa Resources, Inc. /DE | - | 10.9% | EDGAR |