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Unauthorized attempts to upload information and/or change information on any portion of this site are strictly prohibited and are subject to prosecution under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act of 1996 (see Title 18 U.S.C. §§ 1001 and 1030).

To ensure our website performs well for all users, the SEC monitors the frequency of requests for SEC.gov content to ensure automated searches do not impact the ability of others to access SEC.gov content. We reserve the right to block IP addresses that submit excessive requests. Current guidelines limit users to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests.

If a user or application submits more than 10 requests per second, further requests from the IP address(es) may be limited for a brief period. Once the rate of requests has dropped below the threshold for 10 minutes, the user may resume accessing content on SEC.gov. This SEC practice is designed to limit excessive automated searches on SEC.gov and is not intended or expected to impact individuals browsing the SEC.gov website.

Note that this policy may change as the SEC manages SEC.gov to ensure that the website performs efficiently and remains available to all users.

Note: We do not offer technical support for developing or debugging scripted downloading processes.

GOLD RESOURCE CORPORATION_January 20, 2026 0001160791false00011607912026-01-202026-01-20 ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 ​ ​

FORM 8-K

​

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported): January 20, 2026 ​

GOLD RESOURCE CORPORATION

(Exact name of registrant as specified in its charter) ​

​

​

Colorado ​ 001-34857 ​ 84-1473173

(State or other jurisdiction of incorporation) ​ (Commission File Number) ​ (I.R.S. Employer Identification Number)

​

7900 E. Union Ave, Suite 320 Denver, Colorado ​ 80237

(Address of principal executive offices) ​ (Zip Code)

​ Registrant’s telephone number, including area code: (303) 320-7708 ​ (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

​

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

​

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

​

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

​ Securities registered pursuant to Section 12(b) of the Act:

​

​

Title of each class ​ Trading Symbol(s) ​ Name of each exchange on which registered

Common stock ​

GORO

​ NYSE American

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ◻ ​ ​ ​

1.01 ​ ​ ​ Item 2.02  Results of Operations and Financial Condition. ​ On January 20, 2026, Gold Resource Corporation (the “Company”) issued a press release reporting its preliminary production results for the three and twelve months ended December 31, 2025 (the “Press Release”). A copy of the Press Release is attached as Exhibit 99.1 to this report. ​ In accordance with General Instruction B.2 of Form 8-K, the information in this Item 2.02, including Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any of the Company’s filings or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing. ​ ​ Item 9.01    Financial Statements and Exhibits ​ ​ ​ (d)  Exhibits. The following exhibits are furnished with this report: ​ ​

​ ​

99.1 ​ News Release dated January 20, 2026

104 ​ Cover Page Interactive Data File (embedded within the Inline XBRL document)

​ ​

2

SIGNATURES

​ Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​

​ ​ ​

​ ​

GOLD RESOURCE CORPORATION

​ ​ ​ ​

Date: January 21, 2026 By: /s/ Allen Palmiere

Name: Allen Palmiere

Title: Chief Executive Officer and President

​ ​ ​ ​ ​

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