Core Viewpoint - Gold Resource Corporation has resumed mining and processing operations at its Oaxaca mine following the lifting of an illegal blockade that had restricted access [1][2]. Group 1: Blockade Details - The blockade was initiated by approximately 20 employees of four contractors after their agreements were terminated due to a notice from the CTM union [2]. - The situation was resolved without incident, allowing operations to safely resume [1][2]. Group 2: Company Position - Gold Resource Corporation clarified that the dispute was an internal matter between union factions and the contractors, and the Company remained neutral throughout the process [3]. - The Company expressed gratitude to employees, union members, community stakeholders, and governmental partners for their patience and assistance in resolving the blockade [3]. Group 3: Company Overview - Gold Resource Corporation is a gold and silver producer, developer, and explorer, primarily operating at the Don David Gold Mine in Oaxaca, Mexico [4]. - The Company aims to unlock the significant upside potential of its existing infrastructure and large land position surrounding the mine, as well as develop the Back Forty Project in Michigan, USA [4].

Core Viewpoint - Halper Sadeh LLC is investigating several companies for potential violations of federal securities laws and breaches of fiduciary duties to shareholders related to their sales transactions [1][2]. Group 1: Company Investigations - Stellar Bancorp, Inc. is being investigated regarding its sale to Prosperity Bancshares, Inc. for 0.3803 shares of Prosperity common stock and $11.36 in cash for each share of Stellar common stock [1]. - Gold Resource Corporation's sale to Goldgroup Mining Inc. involves an exchange of 1.4476 common shares of Goldgroup for each share of Gold Resource common stock [2]. - SkyWater Technology, Inc. is under scrutiny for its sale to IonQ, which includes $15.00 in cash and $20.00 in shares of IonQ common stock for each share of SkyWater [2]. Group 2: Legal Rights and Options - Halper Sadeh LLC may seek increased consideration for shareholders, additional disclosures, and other relief on behalf of shareholders [3]. - Shareholders are encouraged to contact Halper Sadeh LLC to discuss their legal rights and options at no charge [4].

To learn more about KSF, whose partners include the Former Louisiana Attorney General, visit www.ksfcounsel.com. CONNECT WITH US: Facebook || Instagram || YouTube || TikTok || LinkedIn NEW YORK CITY & NEW ORLEANS--(BUSINESS WIRE)--Former Attorney General of Louisiana Charles C. Foti, Jr., Esq. and the law firm of Kahn Swick & Foti, LLC ("KSF†) are investigating the proposed sale of Gold Resource Corporation (NYSE: GORO) to Goldgroup Mining Inc. (OTC: GGAZF). Under the terms of the proposed transaction, sh ...

Core Viewpoint - Halper Sadeh LLC is investigating the fairness of the sale of Gold Resource Corporation to Goldgroup Mining Inc. for 1.4476 common shares of Goldgroup for each share of Gold Resource common stock [1] Group 1: Investigation Details - The investigation focuses on whether Gold Resource and its board of directors violated federal securities laws and/or breached their fiduciary duties to shareholders [3] - Key concerns include whether the best possible consideration was obtained for shareholders, if Goldgroup is underpaying for Gold Resource, and whether all material information necessary for shareholders to assess the merger consideration was disclosed [3] Group 2: Legal Actions - Halper Sadeh LLC may seek increased consideration for shareholders, additional disclosures, and other relief related to the proposed transaction [4] - The firm operates on a contingent fee basis, meaning shareholders would not be responsible for out-of-pocket legal fees or expenses [4] Group 3: Firm Background - Halper Sadeh LLC represents investors globally who have been victims of securities fraud and corporate misconduct, recovering millions for defrauded investors [5]

Core Viewpoint - Monteverde & Associates PC is investigating the proposed sale of Gold Resource Corporation to Goldgroup Mining, Inc., questioning the fairness of the deal for shareholders [1]. Group 1: Company Overview - Monteverde & Associates PC is recognized as a Top 50 Firm in the 2024 ISS Securities Class Action Services Report and has recovered millions for shareholders [1]. - The firm is headquartered in the Empire State Building, New York City, and specializes in class action securities litigation [2]. Group 2: Transaction Details - Under the proposed transaction, Gold Resource shareholders are expected to have their shares converted into 1.4476 common shares of Goldgroup [1]. - The investigation aims to determine if this conversion represents a fair deal for the shareholders of Gold Resource Corporation [1].

Core Viewpoint - Gold Resource Corporation has entered into a definitive arrangement agreement with Goldgroup Mining Inc. for a merger, where Goldgroup will acquire all outstanding shares of Gold Resource Corporation's common stock, valuing the transaction at approximately US$372 million [1][2][4]. Group 1: Transaction Details - Stockholders of Gold Resource Corporation will receive 1.4476 common shares of Goldgroup for each share of Gold Resource Corporation's common stock, adjusted to 0.3619 shares due to a four-for-one share consolidation by Goldgroup [2][3]. - The exchange ratio represents a value of US$2.25 per share of Gold Resource Corporation's common stock, reflecting a 39% premium based on the closing price on January 23, 2026 [2][4]. - The transaction will be executed through a reverse triangular merger, with Gold Resource Corporation becoming a wholly owned subsidiary of Goldgroup [3][4]. Group 2: Expected Benefits - The merger is expected to enhance production capabilities, particularly through the addition of the San Francisco Mine and Cerro Prieto Mine, which will increase gold exposure and cash generation [5][6]. - The combined company will have a diversified asset portfolio, including Gold Resource Corporation's Don David Gold Mine and Goldgroup's producing mines, which is anticipated to create a multi-mine producer [6]. - The transaction is expected to strengthen the financial position of the combined entity, providing increased financial flexibility for growth projects and exploration initiatives [6]. Group 3: Governance and Management - The transaction has been unanimously approved by the boards of directors of both companies and is expected to close in the second quarter of 2026, pending customary closing conditions [4]. - Upon completion, the board of directors of Goldgroup will include three directors from Goldgroup and two from Gold Resource Corporation, with the latter's executive management team expected to lead the combined company [4].

Core Viewpoint - Gold Resource Corporation is facing an illegal blockade at its mine in Oaxaca, Mexico, which is expected to impact production [1] Group 1: Company Operations - The company received notice from the CTM union that four contractors operating at the mine site are no longer affiliated with the union [1] - In accordance with the CTM union agreement, the company issued termination notices to the four contractors responsible for camp support, security, and ore haulage [1]

Graphic Exhibit 99.1 NEWS - FOR IMMEDIATE RELEASE NYSE American: GORO GOLD RESOURCE CORPORATION ANNOUNCES STRONG PRELIMINARY YEAR-END RESULTS, HIGHLIGHTING OPERATIONAL TURNAROUND Denver, Colorado – January 20, 2026 – Gold Resource Corporation (NYSE American: GORO) (the "Company") is pleased to announce preliminary fourth quarter production results from its Don David Gold Mine that are a significant improvement from previous quarters and represents 45% of the full-year production for 2025. The net result is ...

Core Insights - Gold Resource Corporation reported significant improvements in fourth quarter production results, with the Don David Gold Mine contributing 45% of the full-year production for 2025 [1] - The company achieved a year-end balance sheet of $25 million with no debt, indicating a strong financial position [1] - The production profile has shifted towards silver, which now accounts for approximately 80% of revenue, with record sales of 663,503 ounces of silver [1][2] Production and Sales Performance - In Q4 2025, the company produced and sold 1,785 ounces of gold and 663,503 ounces of silver, compared to 960 ounces of gold and 184,804 ounces of silver in Q4 2024 [3] - The average sale price for silver was $55 per ounce and for gold was $4,234 per ounce, reflecting significant increases from previous periods [2][3] - For the full year ending December 31, 2025, the company sold a total of 23,125 gold equivalent ounces [1][3] Operational Efficiency - The company milled 85,888 tonnes in Q4 2025, an increase from 80,367 tonnes in Q3 2024 [4] - The average gold grade improved to 0.96 g/t in Q4 2025, while the average silver grade reached 298 g/t, indicating enhanced ore quality [5] - The operational turnaround is attributed to increased ore production from the new Three Sisters area, which is expected to contribute 40% of production in 2026 [2] Future Outlook - The company anticipates continued leverage to silver prices, with operational plans and new equipment expected to drive further improvements [2] - The focus remains on unlocking the potential of existing infrastructure and land surrounding the Don David Gold Mine in Oaxaca, Mexico, as well as developing the Back Forty Project in Michigan, USA [7]

Core Insights - Gold Resource Corporation (GRC) reported strong production results from the Don David Gold Mine in Oaxaca, Mexico, particularly from the high-grade Three Sisters area, indicating significant potential for cash flow generation [1][1][1] Production Statistics - From November 8 to 14, 2025, the mine produced 4,357 tonnes and processed 6,769 tonnes with an average Net Smelter Return (NSR) of $1,512 per tonne, which is 129% higher than modeled [1][1] - From November 15 to 21, 2025, the mine produced 6,580 tonnes and processed 6,095 tonnes with an average NSR of $723 per tonne, with tonnes mined being 40% higher and NSR 91% higher than planned [1][1] Back Forty Project Update - The company has decided to resume work on the Back Forty Project in Michigan, engaging consulting firms for a feasibility study and planning to start the permitting process [1][1] - A technical report summary filed in October 2023 indicated that a 50% increase in gold prices to $2,700 could raise the project's net present value by over 100% to approximately $430 million [1][1] Company Overview - Gold Resource Corporation is focused on gold and silver production, development, and exploration, primarily at the Don David Gold Mine in Oaxaca, Mexico, and the Back Forty Project in Michigan, USA [1][1][1]