GRAT Holdings LLC 3

3 · Sunshine Silver Mining & Refining Co · Filed Jun 3, 2026

Insider Transaction Report

Form 3

Period: 2026-06-03

Sunshine Silver Mining & Refining CoSSMR

Tigris Financial Group Ltd.

10% Owner

Holdings

Common Stock
[F1]
(indirect: By LLC)
75,938,300
Common Stock
[F2]
(indirect: By LLC)
7,365,270
Common Stock
[F3]
(indirect: By Tigris Financial Group Ltd.)
1,266,260
Common Stock
[F4]
(indirect: By LLC)
60,010
Common Stock
[F5]
(indirect: By LLC)
393,230
Warrant (right to buy)
[F1]
(indirect: By LLC)
Exercise: $2.87From: 2022-09-02Exp: 2027-09-02→ Common Stock (2,739,640 underlying)
Warrant (right to buy)
[F1]
(indirect: By LLC)
Exercise: $5.00From: 2025-07-15Exp: 2027-07-15→ Common Stock (4,697,120 underlying)
Warrant (right to buy)
[F1]
(indirect: By LLC)
Exercise: $5.00From: 2025-11-05Exp: 2027-11-05→ Common Stock (1,875,000 underlying)
Warrant (right to buy)
[F1]
(indirect: By LLC)
Exercise: $5.00From: 2025-12-29Exp: 2027-12-29→ Common Stock (1,369,650 underlying)
Warrant (right to buy)
[F2]
(indirect: By LLC)
Exercise: $5.00From: 2025-07-15Exp: 2027-07-15→ Common Stock (927,890 underlying)

Footnotes (5)

[F1]These securities are owned directly by Electrum Silver US LLC ("ESUS"). Electrum Strategic Management LLC ("ESM") is the manager of ESUS. ESM is wholly owned by Electrum Global Holdings L.P. ("Global Holdco"), and TEG Global GP Ltd. ("TEG Global") is the general partner of Global Holdco. The Electrum Group LLC ("TEG") acts as an investment advisor to Global Holdco. Thomas S. Kaplan, Chairman of the Issuer's Board of Directors, is also Chairman, Chief Executive Officer and Chief Investment Officer of TEG. Each of these reporting persons (other than Mr. Kaplan who is a director of the Issuer) may be deemed to be a director by deputization of the Issuer.
[F2]These securities are owned directly by Electrum Silver US II LLC ("ESUS II"). Electrum Strategic Opportunities Fund II L.P. ("ESOF II") owns 99% of ESUS II, and ESM is the manager of ESUS II. ESM is wholly owned by Global Holdco, and TEG Global is the general partner of Global Holdco. The general partner of ESOF II is Electrum Strategic Opportunities Fund II GP L.P. ("ESOF II GP L.P."), and the general partner of ESOF II GP L.P. is ESOF II GP Ltd. ("ESOF II GP"). ESOF II GP is wholly owned by Global Holdco. TEG acts as an investment advisor to ESOF II. Thomas S. Kaplan, Chairman of the Issuer's Board of Directors, is also Chairman, Chief Executive Officer and Chief Investment Officer of TEG. Each of these reporting persons (other than Mr. Kaplan who is a director of the Issuer) may be deemed to be a director by deputization of the Issuer.
[F3]These securities are owned directly by Tigris Financial Group Ltd., which is wholly owned by Thomas S. Kaplan.
[F4]These securities are owned directly by Manul Capital Management LLC. Thomas S. Kaplan serves as managing member of Manul Capital Management LLC.
[F5]These securities are owned directly by GRAT Holdings LLC. Thomas S. Kaplan serves as managing member of GRAT Holdings LLC.

Documents

1 file

3
ownership.xmlPrimary
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