X0202 SCHEDULE 13G 0001983637 XXXXXXXX LIVE Common Stock, par value $0.001 per share 06/30/2026 0002091017 Sunshine Silver Mining & Refining Co 867866105 2209 Big Creek Road Kellogg ID 83837 Rule 13d-1(d) Ospraie Real Assets Fund LP DE 0.00 24842328.00 0.00 24842328.00 24842328.00 N 17.3 PN (1) The percentage set forth in row 11 is calculated based upon 143,726,603 shares of the common stock of Sunshine Silver Mining & Refining Company (the "Issuer") outstanding as of immediately following the closing of the Issuer's initial public offering on June 5, 2026, as reported in the prospectus that the Issuer filed with the Securities and Exchange Commission on June 5, 2026 (the "Final Prospectus"). (2) The number of shares reported in the table above includes options to purchase up to 250,000 shares of the common stock of the Issuer, which vest and become exercisable in three equal annual installments beginning on July 15, 2026. Ospraie Real Assets GP LLC DE 0.00 24842328.00 0.00 24842328.00 24842328.00 N 17.3 OO (1) The percentage set forth in row 11 is calculated based upon 143,726,603 shares of the common stock of the Issuer outstanding as of immediately following the closing of the Issuer's initial public offering on June 5, 2026, as set forth in the Final Prospectus. (2) The number of shares reported in the table above includes options to purchase up to 250,000 shares of the common stock of the Issuer, which vest and become exercisable in three equal annual installments beginning on July 15, 2026. Ospraie Management, LLC DE 0.00 24842328.00 0.00 24842328.00 24842328.00 N 17.3 OO (1) The percentage set forth in row 11 is calculated based upon 143,726,603 shares of the common stock of the Issuer outstanding as of immediately following the closing of the Issuer's initial public offering on June 5, 2026, as set forth in the Final Prospectus. (2) The number of shares reported in the table above includes options \warrants to purchase up to 250,000 shares of the common stock of the Issuer, which vest and become exercisable in three equal annual installments beginning on July 15, 2026. Ospraie Holding I, L.P. DE 0.00 24842328.00 0.00 24842328.00 24842328.00 N 17.3 PN (1) The percentage set forth in row 11 is calculated based upon 143,726,603 shares of the common stock of the Issuer outstanding as of immediately following the closing of the Issuer's initial public offering on June 5, 2026, as set forth in the Final Prospectus. (2) The number of shares reported in the table above includes options to purchase up to 250,000 shares of the common stock of the Issuer, which vest and become exercisable in three equal annual installments beginning on July 15, 2026. Ospraie Management Inc. DE 0.00 24842328.00 0.00 24842328.00 24842328.00 N 17.3 CO (1) The percentage set forth in row 11 is calculated based upon 143,726,603 shares of the common stock of the Issuer outstanding as of immediately following the closing of the Issuer's initial public offering on June 5, 2026, as set forth in the Final Prospectus. (2) The number of shares reported in the table above includes options to purchase up to 250,000 shares of the common stock of the Issuer, which vest and become exercisable in three equal annual installments beginning on July 15, 2026. Dwight Anderson X1 0.00 24842328.00 0.00 24842328.00 24842328.00 N 17.3 IN (1) The percentage set forth in row 11 is calculated based upon 143,726,603 shares of the common stock of the Issuer outstanding as of immediately following the closing of the Issuer's initial public offering on June 5, 2026, as set forth in the Final Prospectus. (2) The number of shares reported in the table above includes options to purchase up to 250,000 shares of the common stock of the Issuer, which vest and become exercisable in three equal annual installments beginning on July 15, 2026. Sunshine Silver Mining & Refining Co 2209 Big Creek Road, Kellogg, Idaho 83837 (i) Ospraie Real Assets Fund LP ("ORA Fund") (ii) Ospraie Real Assets GP LLC, the general partner of ORA Fund (iii) Ospraie Management, LLC, the investment manager of ORA Fund (iv) Ospraie Holding I, L.P., the managing member of Ospraie Management, LLC (v) Ospraie Management, Inc., the general partner of Ospraie Holding I, L.P. (vi) Dwight Anderson, the managing member of Ospraie Real Assets GP LLC and the sole owner of Ospraie Management Inc. The foregoing persons are sometimes collectively referred to herein as the "Reporting Persons." Neither the filing of this Schedule 13G nor any of its contents shall be deemed to constitute an admission that any of Ospraie Real Assets GP LLC, Ospraie Management, LLC, Ospraie Holding I, L.P., Ospraie Management, Inc. or Dwight Anderson is the beneficial owner of any of the securities of the Issuer referred to herein that are held directly by ORA Fund for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, except to the extent of his or its respective pecuniary interest therein, if any, and such beneficial ownership is expressly disclaimed. Ospraie Real Assets Fund LP, 411 Theodore Fremd Avenue, Suite 240, Rye, NY 10580 Ospraie Real Assets GP LLC, 411 Theodore Fremd Avenue, Suite 240, Rye, NY 10580 Ospraie Management, LLC, 411 Theodore Fremd Avenue, Suite 240, Rye, NY 10580 Ospraie Holding I, L.P., 411 Theodore Fremd Avenue, Suite 240, Rye, NY 10580 Ospraie Management, Inc., 411 Theodore Fremd Avenue, Suite 240, Rye, NY 10580 Dwight Anderson, 411 Theodore Fremd Avenue, Suite 240, Rye, NY 10580 Ospraie Real Assets Fund LP - Delaware Ospraie Real Assets GP LLC - Delaware Ospraie Management, LLC - Delaware Ospraie Holding I, L.P. - Delaware Ospraie Management, Inc. - Delaware Dwight Anderson - United States Y The information in rows 5 through 9 and 11 on the cover pages to this Schedule 13G, including the footnotes thereto, is hereby incorporated by reference. 24,842,328 17.3% 0 24,842,328 0 24,842,328 Y Y Y Y Y Y Exhibit 99.A - Joint Filing Agreement Ospraie Real Assets Fund LP /s/ Dwight Anderson 08/10/2026 Ospraie Real Assets GP LLC /s/ Dwight Anderson 08/10/2026 Ospraie Management, LLC /s/ Dwight Anderson 08/10/2026 Ospraie Holding I, L.P. /s/ Dwight Anderson 08/10/2026 Ospraie Management Inc. /s/ Dwight Anderson 08/10/2026 Dwight Anderson /s/ Dwight Anderson 08/10/2026