Thomas S. Kaplan - 05 Jun 2026 Form 4 Insider Report for Sunshine Silver Mining & Refining Co (SSMR)

Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
4
Accepted by SEC
08 Jun 2026, 18:00:06 UTC
Prior SEC filing
03 Jun 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Thomas S. Kaplan

Key filing fact

Thomas S. Kaplan filed Form 4 for Sunshine Silver Mining & Refining Co (SSMR) on 08 Jun 2026.

Key facts

  • This page summarizes Thomas S. Kaplan's Form 4 filing for Sunshine Silver Mining & Refining Co (SSMR).
  • 4 reported transactions and 10 derivative rows are listed below.
  • Accepted by SEC: 08 Jun 2026, 18:00.

Change

  • Previous filing in this sequence was filed on 03 Jun 2026.
  • Current net transaction value: $0.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (10)

CIK 0001124803 Primary reporting owner

KAPLAN THOMAS SCOTT

Relationship
Director, 10%+ Owner
Address
600 FIFTH AVENUE, 24TH FLOOR, NEW YORK
Signature
/s/ Thomas S. Kaplan
Signature date
08 Jun 2026
CIK 0001830153

Electrum Silver US LLC

Relationship
Director, 10%+ Owner
Address
C/O THE ELECTRUM GROUP LLC, 600 FIFTH AVENUE, 24TH FLOOR, NEW YORK
Signature
Electrum Silver US LLC, By: Electrum Strategic Management, its Manager, By: /s/ Andrew M. Shapiro, Managing Director
Signature date
08 Jun 2026
CIK 0001829059

Electrum Strategic Management LLC

Relationship
Director, 10%+ Owner
Address
C/O THE ELECTRUM GROUP LLC, 600 FIFTH AVENUE, 24TH FLOOR, NEW YORK
Signature
Electrum Strategic Management LLC, By: /s/ Andrew M. Shapiro, Managing Director
Signature date
08 Jun 2026
CIK 0001564994

ELECTRUM GLOBAL HOLDINGS L.P.

Relationship
Director, 10%+ Owner
Address
C/O THE ELECTRUM GROUP LLC, 600 FIFTH AVENUE, 24TH FLOOR, NEW YORK
Signature
Electrum Global Holdings L.P., By: TEG Global GP Ltd., its general partner, By: /s/ Andrew M. Shapiro, Director
Signature date
08 Jun 2026
CIK 0001565709

TEG Global GP Ltd.

Relationship
Director, 10%+ Owner
Address
C/O THE ELECTRUM GROUP LLC, 600 FIFTH AVENUE, 24TH FLOOR, NEW YORK
Signature
TEG Global GP Ltd., By: /s/ Andrew M. Shapiro, Director
Signature date
08 Jun 2026
CIK 0001565641

Electrum Group LLC

Relationship
Director, 10%+ Owner
Address
600 FIFTH AVENUE, 24TH FLOOR, NEW YORK
Signature
The Electrum Group LLC, By: /s/ Michael H. Williams, Senior Managing Director
Signature date
08 Jun 2026
CIK 0001829058

Electrum Silver US II LLC

Relationship
Director, 10%+ Owner
Address
C/O THE ELECTRUM GROUP LLC, 600 FIFTH AVENUE, 24TH FLOOR, NEW YORK
Signature
Electrum Silver US II LLC, By: Electrum Strategic Management, its Manager By: /s/ Andrew M. Shapiro, Managing Director
Signature date
08 Jun 2026
CIK 0001699437

Electrum Strategic Opportunities Fund II L.P.

Relationship
Director, 10%+ Owner
Address
C/O THE ELECTRUM GROUP LLC, 600 FIFTH AVENUE, 24TH FLOOR, NEW YORK
Signature
Electrum Strategic Opportunities Fund II L.P., By: Electrum Strategic Opportunities Fund II GP L.P., its general partner, By: ESOF II GP Ltd., its general partner, By: /s/ Michael H. Williams, Director
Signature date
08 Jun 2026
CIK 0001734758

Electrum Strategic Opportunities Fund II GP L.P.

Relationship
Director, 10%+ Owner
Address
C/O THE ELECTRUM GROUP LLC, 600 FIFTH AVENUE, 24TH FLOOR, NEW YORK
Signature
Electrum Strategic Opportunities Fund II GP L.P., By: ESOF II GP Ltd., its general partner, By: /s/ Michael H. Williams, Director
Signature date
08 Jun 2026
CIK 0001734759

ESOF II GP Ltd.

Relationship
Director, 10%+ Owner
Address
C/O THE ELECTRUM GROUP LLC, 600 FIFTH AVENUE, 24TH FLOOR, NEW YORK
Signature
ESOF II GP Ltd., By: /s/ Michael H. Williams, Director
Signature date
08 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SSMR transaction

Common Stock

Award

Transaction value
Shares
+8,929
Change %
Price
$0.000000*
Shares after
8,929
Date
05 Jun 2026
Ownership
Direct
Footnotes
F1
SSMR transaction

Common Stock

Award

Transaction value
Shares
+8,929
Change %
Price
$0.000000*
Shares after
8,929
Date
05 Jun 2026
Ownership
Direct
Footnotes
F1
SSMR transaction

Common Stock

Award

Transaction value
Shares
+8,929
Change %
Price
$0.000000*
Shares after
8,929
Date
05 Jun 2026
Ownership
Direct
Footnotes
F1
SSMR transaction

Common Stock

Award

Transaction value
Shares
+8,929
Change %
Price
$0.000000*
Shares after
8,929
Date
05 Jun 2026
Ownership
Direct
Footnotes
F1
SSMR transaction

Common Stock

Award

Transaction value
Shares
+8,929
Change %
Price
$0.000000*
Shares after
8,929
Date
05 Jun 2026
Ownership
Direct
Footnotes
F1
SSMR transaction

Common Stock

Award

Transaction value
Shares
+8,929
Change %
Price
$0.000000*
Shares after
8,929
Date
05 Jun 2026
Ownership
Direct
Footnotes
F1
SSMR transaction

Common Stock

Award

Transaction value
Shares
+8,929
Change %
Price
$0.000000*
Shares after
8,929
Date
05 Jun 2026
Ownership
Direct
Footnotes
F1
SSMR transaction

Common Stock

Award

Transaction value
Shares
+8,929
Change %
Price
$0.000000*
Shares after
8,929
Date
05 Jun 2026
Ownership
Direct
Footnotes
F1
SSMR transaction

Common Stock

Award

Transaction value
Shares
+8,929
Change %
Price
$0.000000*
Shares after
8,929
Date
05 Jun 2026
Ownership
Direct
Footnotes
F1
SSMR transaction

Common Stock

Award

Transaction value
Shares
+8,929
Change %
Price
$0.000000*
Shares after
8,929
Date
05 Jun 2026
Ownership
Direct
Footnotes
F1
SSMR transaction

Common Stock

Options Exercise

Transaction value
Shares
+2,739,640
Change %
+3.6%
Price
$2.87*
Shares after
78,677,940
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Options Exercise

Transaction value
Shares
+2,739,640
Change %
+3.6%
Price
$2.87*
Shares after
78,677,940
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Options Exercise

Transaction value
Shares
+2,739,640
Change %
+3.6%
Price
$2.87*
Shares after
78,677,940
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Options Exercise

Transaction value
Shares
+2,739,640
Change %
+3.6%
Price
$2.87*
Shares after
78,677,940
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Options Exercise

Transaction value
Shares
+2,739,640
Change %
+3.6%
Price
$2.87*
Shares after
78,677,940
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Options Exercise

Transaction value
Shares
+2,739,640
Change %
+3.6%
Price
$2.87*
Shares after
78,677,940
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Options Exercise

Transaction value
Shares
+2,739,640
Change %
+3.6%
Price
$2.87*
Shares after
78,677,940
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Options Exercise

Transaction value
Shares
+2,739,640
Change %
+3.6%
Price
$2.87*
Shares after
78,677,940
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Options Exercise

Transaction value
Shares
+2,739,640
Change %
+3.6%
Price
$2.87*
Shares after
78,677,940
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Options Exercise

Transaction value
Shares
+2,739,640
Change %
+3.6%
Price
$2.87*
Shares after
78,677,940
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Tax liability

Transaction value
Shares
-582,022
Change %
-0.74%
Price
$13.50*
Shares after
78,095,918
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Tax liability

Transaction value
Shares
-582,022
Change %
-0.74%
Price
$13.50*
Shares after
78,095,918
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Tax liability

Transaction value
Shares
-582,022
Change %
-0.74%
Price
$13.50*
Shares after
78,095,918
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Tax liability

Transaction value
Shares
-582,022
Change %
-0.74%
Price
$13.50*
Shares after
78,095,918
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Tax liability

Transaction value
Shares
-582,022
Change %
-0.74%
Price
$13.50*
Shares after
78,095,918
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Tax liability

Transaction value
Shares
-582,022
Change %
-0.74%
Price
$13.50*
Shares after
78,095,918
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Tax liability

Transaction value
Shares
-582,022
Change %
-0.74%
Price
$13.50*
Shares after
78,095,918
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Tax liability

Transaction value
Shares
-582,022
Change %
-0.74%
Price
$13.50*
Shares after
78,095,918
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Tax liability

Transaction value
Shares
-582,022
Change %
-0.74%
Price
$13.50*
Shares after
78,095,918
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR transaction

Common Stock

Tax liability

Transaction value
Shares
-582,022
Change %
-0.74%
Price
$13.50*
Shares after
78,095,918
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Footnotes
F2, F3
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,365,270
Date
05 Jun 2026
Ownership
By Electrum Silver US II LLC
Footnotes
F4
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,365,270
Date
05 Jun 2026
Ownership
By Electrum Silver US II LLC
Footnotes
F4
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,365,270
Date
05 Jun 2026
Ownership
By Electrum Silver US II LLC
Footnotes
F4
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,365,270
Date
05 Jun 2026
Ownership
By Electrum Silver US II LLC
Footnotes
F4
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,365,270
Date
05 Jun 2026
Ownership
By Electrum Silver US II LLC
Footnotes
F4
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,365,270
Date
05 Jun 2026
Ownership
By Electrum Silver US II LLC
Footnotes
F4
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,365,270
Date
05 Jun 2026
Ownership
By Electrum Silver US II LLC
Footnotes
F4
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,365,270
Date
05 Jun 2026
Ownership
By Electrum Silver US II LLC
Footnotes
F4
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,365,270
Date
05 Jun 2026
Ownership
By Electrum Silver US II LLC
Footnotes
F4
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
7,365,270
Date
05 Jun 2026
Ownership
By Electrum Silver US II LLC
Footnotes
F4
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,266,260
Date
05 Jun 2026
Ownership
By Tigris Financial Group Ltd.
Footnotes
F5
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,266,260
Date
05 Jun 2026
Ownership
By Tigris Financial Group Ltd.
Footnotes
F5
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,266,260
Date
05 Jun 2026
Ownership
By Tigris Financial Group Ltd.
Footnotes
F5
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,266,260
Date
05 Jun 2026
Ownership
By Tigris Financial Group Ltd.
Footnotes
F5
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,266,260
Date
05 Jun 2026
Ownership
By Tigris Financial Group Ltd.
Footnotes
F5
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,266,260
Date
05 Jun 2026
Ownership
By Tigris Financial Group Ltd.
Footnotes
F5
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,266,260
Date
05 Jun 2026
Ownership
By Tigris Financial Group Ltd.
Footnotes
F5
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,266,260
Date
05 Jun 2026
Ownership
By Tigris Financial Group Ltd.
Footnotes
F5
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,266,260
Date
05 Jun 2026
Ownership
By Tigris Financial Group Ltd.
Footnotes
F5
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,266,260
Date
05 Jun 2026
Ownership
By Tigris Financial Group Ltd.
Footnotes
F5
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
60,010
Date
05 Jun 2026
Ownership
By Manul Capital Management LLC
Footnotes
F6
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
60,010
Date
05 Jun 2026
Ownership
By Manul Capital Management LLC
Footnotes
F6
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
60,010
Date
05 Jun 2026
Ownership
By Manul Capital Management LLC
Footnotes
F6
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
60,010
Date
05 Jun 2026
Ownership
By Manul Capital Management LLC
Footnotes
F6
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
60,010
Date
05 Jun 2026
Ownership
By Manul Capital Management LLC
Footnotes
F6
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
60,010
Date
05 Jun 2026
Ownership
By Manul Capital Management LLC
Footnotes
F6
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
60,010
Date
05 Jun 2026
Ownership
By Manul Capital Management LLC
Footnotes
F6
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
60,010
Date
05 Jun 2026
Ownership
By Manul Capital Management LLC
Footnotes
F6
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
60,010
Date
05 Jun 2026
Ownership
By Manul Capital Management LLC
Footnotes
F6
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
60,010
Date
05 Jun 2026
Ownership
By Manul Capital Management LLC
Footnotes
F6
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
393,230
Date
05 Jun 2026
Ownership
By GRAT Holdings LLC
Footnotes
F7
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
393,230
Date
05 Jun 2026
Ownership
By GRAT Holdings LLC
Footnotes
F7
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
393,230
Date
05 Jun 2026
Ownership
By GRAT Holdings LLC
Footnotes
F7
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
393,230
Date
05 Jun 2026
Ownership
By GRAT Holdings LLC
Footnotes
F7
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
393,230
Date
05 Jun 2026
Ownership
By GRAT Holdings LLC
Footnotes
F7
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
393,230
Date
05 Jun 2026
Ownership
By GRAT Holdings LLC
Footnotes
F7
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
393,230
Date
05 Jun 2026
Ownership
By GRAT Holdings LLC
Footnotes
F7
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
393,230
Date
05 Jun 2026
Ownership
By GRAT Holdings LLC
Footnotes
F7
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
393,230
Date
05 Jun 2026
Ownership
By GRAT Holdings LLC
Footnotes
F7
SSMR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
393,230
Date
05 Jun 2026
Ownership
By GRAT Holdings LLC
Footnotes
F7

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SSMR transaction Derivative

Warrant (right to buy)

Options Exercise

Transaction value
Shares
-2,739,640
Change %
-100%
Price
$0.000000*
Shares after
0
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Underlying class
Common Stock
Underlying amount
2,739,640
Exercise price
$2.87
Footnotes
F2, F3
SSMR transaction Derivative

Warrant (right to buy)

Options Exercise

Transaction value
Shares
-2,739,640
Change %
-100%
Price
$0.000000*
Shares after
0
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Underlying class
Common Stock
Underlying amount
2,739,640
Exercise price
$2.87
Footnotes
F2, F3
SSMR transaction Derivative

Warrant (right to buy)

Options Exercise

Transaction value
Shares
-2,739,640
Change %
-100%
Price
$0.000000*
Shares after
0
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Underlying class
Common Stock
Underlying amount
2,739,640
Exercise price
$2.87
Footnotes
F2, F3
SSMR transaction Derivative

Warrant (right to buy)

Options Exercise

Transaction value
Shares
-2,739,640
Change %
-100%
Price
$0.000000*
Shares after
0
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Underlying class
Common Stock
Underlying amount
2,739,640
Exercise price
$2.87
Footnotes
F2, F3
SSMR transaction Derivative

Warrant (right to buy)

Options Exercise

Transaction value
Shares
-2,739,640
Change %
-100%
Price
$0.000000*
Shares after
0
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Underlying class
Common Stock
Underlying amount
2,739,640
Exercise price
$2.87
Footnotes
F2, F3
SSMR transaction Derivative

Warrant (right to buy)

Options Exercise

Transaction value
Shares
-2,739,640
Change %
-100%
Price
$0.000000*
Shares after
0
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Underlying class
Common Stock
Underlying amount
2,739,640
Exercise price
$2.87
Footnotes
F2, F3
SSMR transaction Derivative

Warrant (right to buy)

Options Exercise

Transaction value
Shares
-2,739,640
Change %
-100%
Price
$0.000000*
Shares after
0
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Underlying class
Common Stock
Underlying amount
2,739,640
Exercise price
$2.87
Footnotes
F2, F3
SSMR transaction Derivative

Warrant (right to buy)

Options Exercise

Transaction value
Shares
-2,739,640
Change %
-100%
Price
$0.000000*
Shares after
0
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Underlying class
Common Stock
Underlying amount
2,739,640
Exercise price
$2.87
Footnotes
F2, F3
SSMR transaction Derivative

Warrant (right to buy)

Options Exercise

Transaction value
Shares
-2,739,640
Change %
-100%
Price
$0.000000*
Shares after
0
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Underlying class
Common Stock
Underlying amount
2,739,640
Exercise price
$2.87
Footnotes
F2, F3
SSMR transaction Derivative

Warrant (right to buy)

Options Exercise

Transaction value
Shares
-2,739,640
Change %
-100%
Price
$0.000000*
Shares after
0
Date
05 Jun 2026
Ownership
By Electrum Silver US LLC
Underlying class
Common Stock
Underlying amount
2,739,640
Exercise price
$2.87
Footnotes
F2, F3
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 7 footnotes

Footnote F1

Represents restricted stock units ("RSUs") granted to Thomas S. Kaplan. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs vest in full on the earlier of (i) the first anniversary of the grant date or (ii) the day immediately proceeding the date of the Issuer's 2027 Annual Meeting of Stockholders, subject to Mr. Kaplan's continued service as a member of the Issuer's Board of Directors through such date.

Footnote F2

This transaction relates to the net exercise of warrants to purchase 2,739,640 shares of the Issuer's common stock immediately prior to the completion of the initial public offering of the Issuer's common stock, in accordance with the terms of the warrants.

Footnote F3

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.

Footnote F4

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.

Footnote F5

These securities are owned directly by Tigris Financial Group Ltd., which is wholly owned by Thomas S. Kaplan.

Footnote F6

These securities are owned directly by Manul Capital Management LLC. Thomas S. Kaplan serves as managing member of Manul Capital Management LLC.

Footnote F7

These securities are owned directly by GRAT Holdings LLC. Thomas S. Kaplan serves as managing member of GRAT Holdings LLC.

SEC remarks

The reporting persons may be deemed to be members of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding common stock. The filing of this report shall not be deemed to be an admission that the reporting persons are members of such a group. Each reporting person disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest, if any, and this report shall not be deemed to be an admission that any such reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. Because no more than 10 reporting persons can file any one Form 4 through the Securities and Exchange Commission's EDGAR system, certain affiliates of the reporting persons have filed a separate Form 4.

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