| Yorktown Energy Partners XI, L.P. | US$1275.6万 | 9.01% |
| YORKTOWN ENERGY PARTNERS IX, L.P. | US$1258.6万 | 21.87% |
| Yorktown Energy Partners X, L.P. | US$843.1万 | 12.13% |
| First Eagle Investment Management, LLC | US$556.1万 | 0.01% |
| VANGUARD CAPITAL MANAGEMENT LLC | US$334.2万 | 0.00% |
| MORGAN STANLEY | US$326.5万 | 0.00% |
| Simcoe Capital LLC | US$169.1万 | 1.55% |
| GEODE CAPITAL MANAGEMENT, LLC | US$164.3万 | 0.00% |
| AMERICAN CENTURY COMPANIES INC | US$138.1万 | 0.00% |
| RENAISSANCE TECHNOLOGIES LLC | US$132.5万 | 0.00% |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT | US$130.0万 | 0.07% |
| BlackRock, Inc. | US$102.2万 | 0.00% |
| MILLENNIUM MANAGEMENT LLC | US$98.3万 | 0.00% |
| South Dakota Investment Council | US$89.7万 | 0.02% |
| WEDGE CAPITAL MANAGEMENT L L P/NC | US$74.4万 | 0.01% |
| UBS Group AG | US$73.0万 | 0.00% |
| D. E. Shaw & Co., Inc. | US$69.4万 | 0.00% |
| DIMENSIONAL FUND ADVISORS LP | US$68.1万 | 0.00% |
| Samalin Investment Counsel, LLC | US$61.7万 | 0.22% |
| JB CAPITAL PARTNERS LP | US$60.7万 | 0.10% |
| MARSHALL WACE, LLP | US$56.5万 | 0.00% |
| FRANKLIN RESOURCES INC | US$38.3万 | 0.00% |
| J. Derek Lewis & Associates Inc. | US$34.7万 | 0.08% |
| VANGUARD FIDUCIARY TRUST CO | US$34.3万 | 0.00% |
| CITADEL ADVISORS LLC | US$31.8万 | 0.00% |
| STATE STREET CORP | US$31.7万 | 0.00% |
| JANE STREET GROUP, LLC | US$22.5万 | 0.00% |
| GOLDMAN SACHS GROUP INC | US$21.9万 | 0.00% |
| Pingora Partners LLC | US$20.3万 | 0.12% |
| Byrne Asset Management LLC | US$19.8万 | 0.12% |
| NORTHERN TRUST CORP | US$16.7万 | 0.00% |
| Quantinno Capital Management LP | US$16.6万 | 0.00% |
| FIFTH THIRD BANCORP | US$15.8万 | 0.00% |
| Keystone Financial Group | US$15.1万 | 0.01% |
| Lunt Capital Management, Inc. | US$13.0万 | 0.05% |
| Global Trust Asset Management, LLC | US$12.5万 | 0.05% |
| Trexquant Investment LP | US$12.0万 | 0.00% |
| Vanguard Global Advisers, LLC | US$4.9万 | 0.00% |
| FMR LLC | US$9242.0 | 0.00% |
| Bogart Wealth, LLC | US$6497.0 | 0.00% |
| GAMMA Investing LLC | US$4753.0 | 0.00% |
| WELLS FARGO & COMPANY/MN | US$4159.0 | 0.00% |
| Avalon Trust Co | US$3803.0 | 0.00% |
| RHUMBLINE ADVISERS | US$3335.0 | 0.00% |
| HUNTINGTON NATIONAL BANK | US$2555.0 | 0.00% |
| OSAIC HOLDINGS, INC. | US$2262.0 | 0.00% |
| GROUP ONE TRADING LLC | US$2050.0 | 0.00% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | US$1928.0 | 0.00% |
| Farther Finance Advisors, LLC | US$1813.0 | 0.00% |
| BankChampaign, National Association | US$1754.0 | 0.00% |
| CITIGROUP INC | US$1418.0 | 0.00% |
| Sunbelt Securities, Inc. | US$1244.0 | 0.00% |
| ROYAL BANK OF CANADA | US$1000.0 | 0.00% |
| JONES FINANCIAL COMPANIES LLLP | US$871.0 | 0.00% |
| PNC FINANCIAL SERVICES GROUP, INC. | US$867.0 | 0.00% |
| Costello Asset Management, INC | US$816.0 | 0.00% |
| ExodusPoint Capital Management, LP | US$775.0 | 0.00% |
| NISA INVESTMENT ADVISORS, LLC | US$694.0 | 0.00% |
| JPMORGAN CHASE & CO | US$688.0 | 0.00% |
| MassMutual Private Wealth & Trust, FSB | US$383.0 | 0.00% |
| KERR FINANCIAL PLANNING Corp | US$377.0 | 0.00% |
| Tower Research Capital LLC (TRC) | US$357.0 | 0.00% |
| Arax Advisory Partners | US$255.0 | 0.00% |
| EverSource Wealth Advisors, LLC | US$255.0 | 0.00% |
| Center for Financial Planning, Inc. | US$174.0 | 0.00% |
| Advisory Services Network, LLC | US$173.0 | 0.00% |
| BARCLAYS PLC | US$163.0 | 0.00% |
| SIGNATUREFD, LLC | US$102.0 | 0.00% |
| Parallel Advisors, LLC | US$92.0 | 0.00% |
| Optiver Holding B.V. | US$82.0 | 0.00% |
| CWM, LLC | US$71.0 | 0.00% |
| Rockefeller Capital Management L.P. | US$51.0 | 0.00% |
| Russell Investments Group, Ltd. | US$31.0 | 0.00% |
| DANSKE BANK A/S | US$20.0 | 0.00% |
| NVWM, LLC | US$20.0 | 0.00% |
| Larson Financial Group LLC | US$10.0 | 0.00% |
| SBI Securities Co., Ltd. | US$10.0 | 0.00% |
| BNP PARIBAS FINANCIAL MARKETS | US$6.1 | 0.00% |
| Covestor Ltd | US$0.0 | 0.00% |