X0609 4 2026-06-05 0002091017 Sunshine Silver Mining & Refining Co SSMR 0002132663 White Heather Eileen false 2209 BIG CREEK RD KELLOGG ID 83837 true true Chief Executive Officer false Common Stock 2026-06-05 4 P 0 2000 13.5 A 2000 D Common Stock 50000 I By White Mining Consulting Inc. The reporting person is the President of White Mining Consulting Inc. and may be deemed to beneficially own securities held by White Mining Consulting Inc. /s/ Michelle Shepston, as attorney-in-fact 2026-06-08