STOCK TITAN

Sunshine Silver (SSMR) CEO discloses common stock, warrants and options in Form 3

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

Rhea-AI Filing Summary

Sunshine Silver Mining & Refining Co director and Chief Executive Officer White Heather Eileen filed an initial Form 3 reporting existing equity interests, with no new purchases or sales. She may be deemed to beneficially own 50,000 shares of common stock and 25,000 warrants held indirectly through White Mining Consulting Inc. The filing also shows 1,463,000 stock options to buy common stock held directly, granted on July 15, 2025, vesting in three equal annual installments and exercisable at $4.00 per share, and warrants exercisable at $5.00 per share until September 30, 2027.

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Insider White Heather Eileen
Role Chief Executive Officer
Type Security Shares Price Value
holding Stock Option (Right to Buy) -- -- --
holding Warrants -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Stock Option (Right to Buy) — 1,463,000 shares (Direct, null); Warrants — 25,000 shares (Indirect, By White Mining Consulting Inc.); Common Stock — 50,000 shares (Indirect, By White Mining Consulting Inc.)
Footnotes (1)
  1. 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. These stock options were granted on July 15, 2025 and vest in three equal annual installments on the first three anniversaries of the grant date, subject to the reporting person's continuous service. Each warrant is exercisable for one share of common stock until the later of two years from the date of purchase or six months after the completion of the Issuer's initial public offering.
Indirect common stock holdings 50,000 shares Common Stock held indirectly via White Mining Consulting Inc.
Indirect warrants 25,000 warrants Warrants exercisable into common stock held indirectly
Warrant exercise price $5.00 per share Exercise price for warrants into common stock
Warrant expiration September 30, 2027 Warrants exercisable until this date
Stock options underlying shares 1,463,000 shares Underlying common stock for stock options held directly
Stock option exercise price $4.00 per share Exercise price for stock options granted July 15, 2025
Stock option expiration July 15, 2035 Expiration date for stock options, subject to vesting
beneficially own financial
"may be deemed to beneficially own securities held by White Mining Consulting Inc."
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
stock options financial
"These stock options were granted on July 15, 2025 and vest in three equal annual installments"
Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.
warrants financial
"Each warrant is exercisable for one share of common stock until the later of two years from the date of purchase"
Warrants are special documents that give you the right to buy a company's stock at a set price before a certain date. They are often used as a way for companies to attract investors or raise money, and their value can increase if the company's stock price goes up.
initial public offering financial
"six months after the completion of the Issuer's initial public offering"
An initial public offering (IPO) is when a private company first sells its shares to the public and becomes a stock-listed company. It matters because it allows the company to raise money from a wide range of investors, helping it grow, while giving early shareholders a way to sell some of their ownership.
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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*
White Heather Eileen

(Last)(First)(Middle)
2209 BIG CREEK RD

(Street)
KELLOGG IDAHO 83837

(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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Executive Officer
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form 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 Stock50,000IBy White Mining Consulting Inc.(1)
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
Stock Option (Right to Buy) (2)07/15/2035Common Stock1,463,000$4D
Warrants (3)09/30/2027Common Stock25,000$5IBy White Mining Consulting Inc.(1)
Explanation of Responses:
1. 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.
2. These stock options were granted on July 15, 2025 and vest in three equal annual installments on the first three anniversaries of the grant date, subject to the reporting person's continuous service.
3. Each warrant is exercisable for one share of common stock until the later of two years from the date of purchase or six months after the completion of the Issuer's initial public offering.
Remarks:
Exhibit 24 - Power of Attorney.
/s/ Michelle Shepston, as attorney-in-fact06/03/2026
** 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 does Sunshine Silver Mining (SSMR) CEO report on this Form 3?

The CEO reports existing holdings, not new trades. She may be deemed to beneficially own 50,000 common shares, 25,000 warrants via White Mining Consulting Inc., and 1,463,000 stock options to buy common stock.

How many Sunshine Silver Mining (SSMR) shares does the CEO indirectly hold?

The CEO may be deemed to indirectly hold 50,000 common shares. These shares are owned by White Mining Consulting Inc., where she serves as President, and are disclosed as indirectly owned beneficial interests.

What derivative securities for SSMR does the CEO hold according to the Form 3?

She holds 25,000 warrants and 1,463,000 stock options. The warrants are exercisable into common stock, while the stock options provide a right to buy common shares at a fixed exercise price.

What are the exercise prices and expirations of the CEO’s SSMR derivatives?

The warrants are exercisable at $5.00 per share until September 30, 2027. The stock options are exercisable at $4.00 per share and expire on July 15, 2035, subject to vesting conditions.

Are there any buy or sell transactions in this Sunshine Silver (SSMR) Form 3?

No buy or sell transactions are reported. The filing lists existing holdings of common stock, warrants, and stock options as of the reporting date, without recording new purchases, sales, or exercises.