| 1 | Solas Capital Management, LLC | 3,545,186 | $16.4M | 9.33% | Share |
| 2 | Yorktown Energy Partners XI, L.P. | 2,779,443 | $12.9M | 9.03% | Share |
| 3 | Yorktown Energy Partners X, L.P. | 2,656,705 | $12.3M | 15.92% | Share |
| 4 | Yorktown Energy Partners IX, L.P. | 1,181,124 | $5.5M | 7.23% | Share |
| 5 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 13,443 | $4.5M | 0.00% | Share |
| 6 | VANGUARD GROUP INC | 955,932 | $4.4M | 0.00% | Share |
| 7 | HARBOURVEST PARTNERS LLC | 840,598 | $3.9M | 2.24% | Share |
| 8 | Ballast Asset Management, LP | 794,322 | $3.7M | 1.74% | Share |
| 9 | PARAGON ASSOCIATES & PARAGON ASSOCIATES II JOINT VENTURE | 650,000 | $3.0M | 6.23% | Share |
| 10 | DIMENSIONAL FUND ADVISORS LP | 753,825 | $3.0M | 0.00% | Share |
| 11 | BlackRock, Inc. | 575,643 | $2.0M | 0.00% | Share |
| 12 | PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 376,905 | $1.7M | 0.10% | Share |
| 13 | Clayton Partners LLC | 355,261 | $1.6M | 1.19% | Share |
| 14 | Dalton Investments, Inc. | 250,000 | $1.2M | 0.86% | Share |
| 15 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 346,653 | $1.0M | 0.02% | Share |
| 16 | SEI INVESTMENTS CO | 242,270 | $1.0M | 0.00% | Share |
| 17 | STATE STREET CORP | 249,989 | $1.0M | 0.00% | Share |
| 18 | LPL Financial LLC | 317,030 | $1.0M | 0.00% | Share |
| 19 | MORGAN STANLEY | 339,263 | $1.0M | 0.00% | Share |
| 20 | RENAISSANCE TECHNOLOGIES LLC | 245,400 | $1.0M | 0.00% | Share |
| 21 | MARSHALL WACE, LLP | 374,653 | $1.0M | 0.00% | Share |
| 22 | GEODE CAPITAL MANAGEMENT, LLC | 411,684 | $1.0M | 0.00% | Share |
| 23 | De Lisle Partners LLP | 166,411 | $773K | 0.10% | Share |
| 24 | HILLMAN CO | 146,597 | $680K | 0.24% | Share |
| 25 | MCINTYRE FREEDMAN & FLYNN INVESTMENT ADVISERS INC | 135,900 | $630K | 0.40% | Share |
| 26 | INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC | 127,824 | $593K | 0.04% | Share |
| 27 | VANGUARD GROUP INC | 112,213 | $520K | 0.00% | Share |
| 28 | STRS OHIO | 40,000 | $185K | 0.00% | Share |
| 29 | RITHOLTZ WEALTH MANAGEMENT | 32,326 | $149K | 0.00% | Share |
| 30 | Claro Advisors Inc. | 11,528 | $53K | 0.01% | Share |
| 31 | SHERBROOKE PARK ADVISERS LLC | 11,147 | $51K | 0.13% | Share |
| 32 | VANGUARD GROUP INC | 8,616 | $39K | 0.00% | Share |
| 33 | Invesco Ltd. | 7,301 | $33K | 0.00% | Share |
| 34 | CWM, LLC | 3,795 | $18K | 0.00% | Share |
| 35 | State of Alaska, Department of Revenue | 3,396 | $15K | 0.00% | Share |
| 36 | Invesco Ltd. | 3,125 | $14K | 0.00% | Share |
| 37 | Invesco Ltd. | 3,173 | $14K | 0.00% | Share |
| 38 | UBS Group AG | 1,658 | $7K | 0.00% | Share |
| 39 | Farther Finance Advisors, LLC | 1,012 | $4K | 0.00% | Share |
| 40 | BOYD WATTERSON ASSET MANAGEMENT LLC/OH | 1,000 | $4K | 0.00% | Share |
| 41 | CAPTRUST FINANCIAL ADVISORS | 15,146 | $0 | 0.00% | Share |
| 42 | Tower Research Capital LLC (TRC) | 2,193 | $0 | 0.00% | Share |
| 43 | BANK OF AMERICA CORP /DE/ | 35,684 | $0 | 0.00% | Share |
| 44 | GROUP ONE TRADING LLC | 100 | $0 | 0.00% | Call |
| 45 | EverSource Wealth Advisors, LLC | 2 | $0 | 0.00% | Share |
| 46 | EverSource Wealth Advisors, LLC | 113 | $0 | 0.00% | Share |
| 47 | Allworth Financial LP | 65 | $0 | 0.00% | Share |
| 48 | SBI Securities Co., Ltd. | 96 | $0 | 0.00% | Share |
| 49 | BANK OF AMERICA CORP /DE/ | 878 | $0 | 0.00% | Share |
| 50 | Sterling Capital Management LLC | 1,228 | $0 | 0.00% | Share |