STOCK TITAN

Sunshine Silver Mining (SSMR) insiders report large indirect share and warrant stakes

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Sunshine Silver Mining & Refining Co insiders are reporting their existing ownership rather than new trades. Entities affiliated with the Electrum group and Thomas S. Kaplan disclose indirect holdings of Common Stock, including 75,938,300 shares held by Electrum Silver US LLC and 7,365,270 shares held by Electrum Silver US II LLC.

They also report several warrant positions over Common Stock, with exercise prices of $5.00 and $2.87 per share and expirations in 2027. These holdings are owned through LLCs and funds for which Electrum entities act as managers, general partners, or investment advisors.

Positive

  • None.

Negative

  • None.
Insider KAPLAN THOMAS SCOTT, Electrum Silver US LLC, Electrum Strategic Management LLC, ELECTRUM GLOBAL HOLDINGS L.P., TEG Global GP Ltd., Electrum Group LLC, Electrum Silver US II LLC, Electrum Strategic Opportunities Fund II L.P., Electrum Strategic Opportunities Fund II GP L.P., ESOF II GP Ltd.
Role null | null | null | null | null | null | null | null | null | null
Type Security Shares Price Value
holding Warrant (right to buy) -- -- --
holding Warrant (right to buy) -- -- --
holding Warrant (right to buy) -- -- --
holding Warrant (right to buy) -- -- --
holding Warrant (right to buy) -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Warrant (right to buy) — 2,739,640 shares (Indirect, By Electrum Silver US LLC); Common Stock — 75,938,300 shares (Indirect, By Electrum Silver US LLC)
Footnotes (1)
  1. 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. 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. These securities are owned directly by Tigris Financial Group Ltd., which is wholly owned by Thomas S. Kaplan. These securities are owned directly by Manul Capital Management LLC. Thomas S. Kaplan serves as managing member of Manul Capital Management LLC. These securities are owned directly by GRAT Holdings LLC. Thomas S. Kaplan serves as managing member of GRAT Holdings LLC.
Electrum Silver US LLC common shares 75,938,300 shares Indirect Common Stock holding as of 2026-06-03
Electrum Silver US II LLC common shares 7,365,270 shares Indirect Common Stock holding as of 2026-06-03
Tigris Financial Group Ltd. common shares 1,266,260 shares Indirect Common Stock holding as of 2026-06-03
GRAT Holdings LLC common shares 393,230 shares Indirect Common Stock holding as of 2026-06-03
Electrum US II warrant position 927,890 underlying shares at $5.00 Warrant over Common Stock expiring 2027-07-15
Electrum US LLC warrant position 4,697,120 underlying shares at $5.00 Warrant over Common Stock expiring 2027-07-15
Electrum US LLC lower-price warrant 2,739,640 underlying shares at $2.87 Warrant over Common Stock expiring 2027-09-02
Warrant (right to buy) financial
"security_title: "Warrant (right to buy)""
indirect financial
"ownership_type: "indirect" and ownership_code: "I""
exercise price financial
"conversion_or_exercise_price: "5.0000" and "2.8700""
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
investment advisor financial
"The Electrum Group LLC ("TEG") acts as an investment advisor to Global Holdco."
An investment advisor is a person or firm that provides personalized guidance on buying, selling and managing investments and often oversees client portfolios for a fee. For investors this matters because the advisor shapes risk, costs and long-term returns, and is typically required by law to act in the client’s best interests — think of them as a financial coach or GPS that helps navigate choices and avoid costly detours.
director by deputization regulatory
"may be deemed to be a director by deputization of the Issuer."
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SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
KAPLAN THOMAS SCOTT

(Last)(First)(Middle)
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
06/03/2026
3. Issuer Name and Ticker or Trading Symbol
Sunshine Silver Mining & Refining Co [ SSMR ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirectorX10% Owner
Officer (give title below)Other (specify below)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock75,938,300IBy Electrum Silver US LLC(1)
Common Stock7,365,270IBy Electrum Silver US II LLC(2)
Common Stock1,266,260IBy Tigris Financial Group Ltd.(3)
Common Stock60,010IBy Manul Capital Management LLC(4)
Common Stock393,230IBy GRAT Holdings LLC(5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Warrant (right to buy)09/02/202209/02/2027Common Stock2,739,640$2.87IBy Electrum Silver US LLC(1)
Warrant (right to buy)07/15/202507/15/2027Common Stock4,697,120$5IBy Electrum Silver US LLC(1)
Warrant (right to buy)11/05/202511/05/2027Common Stock1,875,000$5IBy Electrum Silver US LLC(1)
Warrant (right to buy)12/29/202512/29/2027Common Stock1,369,650$5IBy Electrum Silver US LLC(1)
Warrant (right to buy)07/15/202507/15/2027Common Stock927,890$5IBy Electrum Silver US II LLC(2)
1. Name and Address of Reporting Person*
KAPLAN THOMAS SCOTT

(Last)(First)(Middle)
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Electrum Silver US LLC

(Last)(First)(Middle)
C/O THE ELECTRUM GROUP LLC
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Electrum Strategic Management LLC

(Last)(First)(Middle)
C/O THE ELECTRUM GROUP LLC
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
ELECTRUM GLOBAL HOLDINGS L.P.

(Last)(First)(Middle)
C/O THE ELECTRUM GROUP LLC
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
TEG Global GP Ltd.

(Last)(First)(Middle)
C/O THE ELECTRUM GROUP LLC
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Electrum Group LLC

(Last)(First)(Middle)
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Electrum Silver US II LLC

(Last)(First)(Middle)
C/O THE ELECTRUM GROUP LLC
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Electrum Strategic Opportunities Fund II L.P.

(Last)(First)(Middle)
C/O THE ELECTRUM GROUP LLC
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Electrum Strategic Opportunities Fund II GP L.P.

(Last)(First)(Middle)
C/O THE ELECTRUM GROUP LLC
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
ESOF II GP Ltd.

(Last)(First)(Middle)
C/O THE ELECTRUM GROUP LLC
600 FIFTH AVENUE, 24TH FLOOR

(Street)
NEW YORK NEW YORK 10020

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. 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.
2. 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.
3. These securities are owned directly by Tigris Financial Group Ltd., which is wholly owned by Thomas S. Kaplan.
4. These securities are owned directly by Manul Capital Management LLC. Thomas S. Kaplan serves as managing member of Manul Capital Management LLC.
5. These securities are owned directly by GRAT Holdings LLC. Thomas S. Kaplan serves as managing member of GRAT Holdings LLC.
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 3 through the Securities and Exchange Commission's EDGAR system, certain affiliates of the reporting persons have filed a separate Form 3.
/s/ Thomas S. Kaplan06/03/2026
Electrum Silver US LLC, By: Electrum Strategic Management, its Manager, By: /s/ Andrew M. Shapiro, Managing Director06/03/2026
Electrum Strategic Management LLC, By: /s/ Andrew M. Shapiro, Managing Director06/03/2026
Electrum Global Holdings L.P., By: TEG Global GP Ltd., its general partner, By: /s/ Andrew M. Shapiro, Director06/03/2026
TEG Global GP Ltd., By: /s/ Andrew M. Shapiro, Director06/03/2026
The Electrum Group LLC, By: /s/ Michael H. Williams, Senior Managing Director06/03/2026
Electrum Silver US II LLC, By: Electrum Strategic Management, its Manager By: /s/ Andrew M. Shapiro, Managing Director06/03/2026
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, Director06/03/2026
Electrum Strategic Opportunities Fund II GP L.P., By: ESOF II GP Ltd., its general partner, By: /s/ Michael H. Williams, Director06/03/2026
ESOF II GP Ltd., By: /s/ Michael H. Williams, Director06/03/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What insider holdings in SSMR are disclosed by Electrum Silver US LLC?

Electrum Silver US LLC reports indirect ownership of 75,938,300 shares of Sunshine Silver Mining & Refining Co Common Stock. These shares are part of a broader group structure where Electrum entities manage or advise investment vehicles connected to the issuer.

What SSMR shares does Electrum Silver US II LLC report owning?

Electrum Silver US II LLC reports indirect holdings of 7,365,270 shares of Sunshine Silver Mining & Refining Co Common Stock. The entity is 99% owned by Electrum Strategic Opportunities Fund II L.P., with management and advisory roles held by related Electrum group entities.

What warrant positions over SSMR stock do Electrum entities report?

Electrum-related entities disclose multiple warrants over SSMR Common Stock, including positions for 4,697,120 and 2,739,640 underlying shares. Exercise prices are $5.00 and $2.87 per share, with expirations between September 2027 and December 2027.

How is Thomas S. Kaplan connected to the SSMR insider holdings?

Thomas S. Kaplan is Chairman of Sunshine Silver Mining’s Board and leads several Electrum entities. He is also managing member of Tigris Financial Group Ltd., Manul Capital Management LLC, and GRAT Holdings LLC, which directly hold certain reported SSMR securities.

What indirect ownership structures are used for these SSMR holdings?

The holdings use LLCs, limited partnerships, and advisory entities. Electrum Strategic Management LLC, Electrum Global Holdings L.P., TEG Global GP Ltd., and The Electrum Group LLC play roles as managers, general partners, or investment advisors to the entities owning SSMR securities.

Do the reported SSMR insider positions indicate recent buying or selling?

The disclosure lists holdings rather than transactions, with no buy or sell codes and all entries marked as holdings. This suggests the document is an initial statement of beneficial ownership, not a record of recent market trades in SSMR shares.