| Date Filed | Type | Description |
| 07/02/2020 |
GN
| AM Resources Postpones Filing of Interim Financial Statements |
| 06/02/2020 |
GN
| AM Resources Postpones Filing of Interim Financial Statements |
| 04/29/2020 |
GN
| AM Resources Postpones Filing of Annual Financial Statements |
| 04/14/2020 |
10-K/A
| Annual Report for the period ended March 4, 2020 [amend] |
| 03/05/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 02/19/2020 |
15-12B
| Form 15-12B - Securities registration termination [Section 12(b)]: |
| 02/18/2020 |
EFFECT
| Form EFFECT - Notice of Effectiveness: |
| 02/13/2020 |
15-12B
| Form 15-12B - Securities registration termination [Section 12(b)]: |
| 02/11/2020 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments: |
| 02/11/2020 |
POS AM
| Form POS AM - Post-Effective amendments for registration statement: |
| 01/16/2020 |
8-K
| Triggering Events That Accelerate or Increase a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arran... |
| 11/12/2019 |
10-Q
| Quarterly Report for the period ended September 30, 2019 |
| 10/31/2019 |
8-K
| Quarterly results |
| 10/21/2019 |
GN
| AM Resources Commences Rio Negro and Esperanza Asphaltite Projects Drilling Programs, Colombia |
| 10/11/2019 |
25-NSE
| Form 25-NSE - Notification filed by national security exchange to report the removal from listing and registration of matured, redeemed or retired securities: |
| 10/10/2019 |
SC 13G/A
| ORBIS INVESTMENT MANAGEMENT LTD reports a 13.5% stake in Alta Mesa Resources, Inc. |
| 09/23/2019 |
GN
| Alta Mesa Resources Announces OTC Pink Ticker Symbols |
| 09/20/2019 |
10-Q
| Quarterly Report for the period ended March 31, 2019 |
| 09/17/2019 |
8-K
| Bankruptcy or Receivership, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listi... |
| 09/17/2019 |
GN
| Alta Mesa Resources Receives Nasdaq Notice of Delisting |
| 09/13/2019 |
GN
| AM Resources Corporate Update |
| 09/12/2019 |
8-K
| Quarterly results |
| 09/12/2019 |
GN
| Alta Mesa Resources and Alta Mesa Holdings File Voluntary Bankruptcy Petition; Announce Leadership Changes |
| 09/10/2019 |
DEF 14A
| Form DEF 14A - Other definitive proxy statements: |
| 08/21/2019 |
8-K
| Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and... |
| 08/21/2019 |
GN
| Alta Mesa Resources Receives NASDAQ Notice Regarding Non-Compliance With Continued Listing Standards |
| 08/15/2019 |
8-K
| Quarterly results |
| 08/13/2019 |
SC 13D/A
| Highbridge Principal Strategies, LLC reports a 33.4% stake in ALTA MESA RESOURCES, INC. |
| 08/06/2019 |
8-K
| Quarterly results |
| 07/08/2019 |
8-K
| Entry into a Material Definitive Agreement, Departure of Directors or Certain Officers; Election of Directors; Appointment of... |
| 06/11/2019 |
GN
| AM Resources Undertakes Exploration Program on La Esperanza |
| 05/17/2019 |
8-K
| Quarterly results |
| 05/17/2019 |
GN
| Alta Mesa Resources Provides Operational and Financial Update; Receives NASDAQ Notice Regarding Non-Compliance With Continued Listing Standards; Alta Mesa Holdings Files Form 10-K |
| 05/13/2019 |
NT 10-Q
| Form NT 10-Q - Notification of inability to timely file Form 10-Q or 10-QSB: |
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