Thunder Mountain Gold, Inc. News Releases

Thunder Mountain Gold Strengthens Board with Appointment of Veteran Mining Executive Ron Clayton

Mon, 05 Oct 2026 08:00:00 -0400

Boise, Idaho--(Newsfile Corp. - October 5, 2026) - Thunder Mountain Gold Inc. (OTCQB: THMG) (TSXV: THM) (the "Company") is pleased to announce the appointment of Ron Clayton to its Board of Directors, effective October 1, 2026. Mr. Clayton brings more than 40 years of mining industry experience across underground and open-pit operations, executive leadership, corporate governance, safety, environmental stewardship, sustainability, exploration, development, and production.

Mr. Clayton currently serves as Chairman of the Board of i-80 Gold Corporation and as Chairman of its Technical, Safety, Environmental and Sustainability Committee. He previously served as President, Chief Executive Officer and a director of Tahoe Resources Inc.; President, Chief Executive Officer and a director of 1911 Gold Corporation; and in senior operating leadership roles with Hecla Mining Company, Stillwater Mining Company, and Climax Molybdenum Company. His career spans site operations, project development, corporate management, and public-company board oversight.

"Mr. Clayton's extensive operating experience and record of executive and board leadership will add valuable perspective as Thunder Mountain Gold advances its strategy," said Eric T. Jones, President and CEO Thunder Mountain Gold Inc. "His technical knowledge, governance experience, and commitment to responsible mining will strengthen the Board and support the Company's long-term objectives."

"I am pleased to join the Board of Thunder Mountain Gold and look forward to working with my fellow directors and the management team," said Mr. Clayton. "I welcome the opportunity to contribute my operating and governance experience as the Company pursues its priorities and works to create long-term value for shareholders."

Mr. Clayton holds a Bachelor of Science in Mining Engineering from the Colorado School of Mines and completed the Tuck Executive Education Program at Dartmouth. His career includes leadership responsibilities in Nevada, Idaho, Washington, Colorado, Manitoba, and other mining jurisdictions.

Regarding Thunder Mountain Gold, Inc.
Thunder Mountain Gold Inc., founded in 1935, is a junior exploration company focused on advancing base and precious metals assets in the western United States. The Company's principal asset is the South Mountain Mine, a historic former Anaconda Copper Company development of zinc, silver, gold, lead, and copper located on private land in Owyhee County, Idaho. Thunder Mountain Gold also owns 100% of the Trout Creek Project, a gold exploration asset in Nevada adjacent to and surrounded by Nevada Gold Mines, a Barrick-Newmont joint venture. With a growing land position, established project infrastructure, and exposure to both critical and precious metals, Thunder Mountain Gold offers investors leverage to exploration success in premier U.S. mining jurisdictions. For more information, please visit the Company's website at www.Thundermountaingold.com, www.SEC.gov, and www.sedarplus.ca.

Cautionary Note to Investors
This news release is intended for release in the United States only. Neither the TSX Venture Exchange, the OTCQB, nor either of its Regulation Services Provider accepts responsibility for the adequacy or accuracy of this release.

For further information, please contact:
Thunder Mountain Gold, Inc.
Eric T. Jones
President and Chief Executive Officer
Eric@thundermountaingold.com
Office: (208) 658-1037

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/317323

Thunder Mountain Gold Advances Ag-Au-Cu-Pb-Zn Massive Sulfide Resource Expansion Targets at South Mountain

Thu, 17 Sep 2026 07:00:00 -0400

Confirmed near-resource expansion potential: Four holes tested the previously undrilled up-dip extension of the DMEA massive-sulfide chimney and intersected intense skarn alteration with copper, zinc, and lead sulfides.
Delivered strong initial assay results: Drilling returned broad silver-enriched intervals, including 22.47 meters grading 86 g/t silver, with higher-grade subintervals and associated gold, copper, lead, and zinc values.
Identified new massive sulfide mineralization at the Kentucky target approximately 250m westward of resource area: Three step-out holes demonstrated approximately 80 meters of down-plunge continuity, intersected about 15 meters of intense gossan, and left the mineralized zone open at depth.
Advanced district-scale discovery targets: Drilling at the Bay State to the northwest, and on private claims to the southeast along trend intersected strongly altered, pyrite-rich schist and marble with localized skarn, improving the geological model and supporting additional exploration along the Laxey Marble trend.

Boise, Idaho--(Newsfile Corp. - September 17, 2026) - Thunder Mountain Gold, Inc. (OTCQB: THMG) (TSXV: THM) ("Thunder Mountain Gold" or the "Company") is pleased to report successful results from its 2026 exploration program at the South Mountain Project in southern Idaho, where drilling has successfully advanced multiple high-priority targets across the Company's expanding silver-zinc-gold-copper-lead district.

The Company's 8,500-foot diamond core program was designed to expand the established carbonate replacement deposit (CRD) massive sulfide resource while also testing compelling district-scale copper-gold porphyry targets identified through integrated geological and geophysical work. To date, ten drill holes have intersected mineralogic alteration with associated iron, copper, zinc, and lead sulfide mineralization reinforcing the potential to expand the known CRD system which is strongly associated with the Laxey Marble host rock formation (Figure 1).

Four of these holes tested the up-dip extension of the DMEA massive sulfide "chimney" towards the surface where there was no previous drilling. The holes intercepted intense hedenbergite skarn alteration containing copper-sulfide mineralization with associated zinc and lead sulfides. Assays have been received from three of these holes confirming strong enrichment in silver and gold within the massive sulfides (Table 1). The intercepts represent the first drill tests between the surface and the Laxey drift - a distance of 100 - 150 meters.

Table 1. Initial Assay Results from 2026 Drilling

Hole No.	From (m)	To (m)	Interval (m)	*Est. True width (m)	Ag (g/t)	Au (g/t)	Cu	Pb	Zn
SM26-055	55.69	63.09	7.40	49.56	52	0.299	308 ppm	506 ppm	0.22%
and	98.66	121.13	22.47	20.00	86	0.105	0.36 %	310 ppm	0.52 %
including	98.66	108.81	10.15	9.03	141	0.179	0.74 %	382 ppm	1.00 %
	101.38	108.81	7.43	6.61	124	0.203	1.01 %	385 ppm	1.36
	103.78	108.81	5.03	4.48	133	0.179	1.47 %	318 ppm	1.95 %
SM26-056	125.88	133.50	7.62	5.49	67	0.046	0.39 %	122 ppm	1.95 %
SM26-057	40.23	42.34	2.11	1.98	451	1.510	201 ppm	4.44 %	1.64 %
and	99.79	113.42	13.63	12.81	117	0.086	0.81 %	352 ppm	0.94 %
including	101.19	105.86	4.67	4.39	234	0.196	2.12 %	454 ppm	2.44 %
*Estimated true width based on cross-sectional analysis

Step-out drilling of three holes at the Kentucky Ridge target documents approximately 80 meters of down-plunge continuity from a surface gossan grading 7.6 meters at 125 g/t silver, 1.2% lead, and 1.7% zinc in a channel sample. Visual review of the drill intercepts notes approximately 15 meters of intense gossan and a correlated, but deeper intersection of intensely silicified, pyrrhotite-sphalerite (Zn sulfide) mineralization in a second drillhole. The mineralized zone remains open at depth. Company geologists believe this target may represent a high-level expression of deeper massive sulfide mineralization. Assays are pending.

Three additional holes targeted the important Laxey Marble including one hole testing a historic induced-polarization geophysical anomaly further northwest of the massive sulfide resource area at the Bay State target (Figure 1). Two additional holes, at the southeast end of the trend, tested the Laxey Marble approximately 400 meters to the southeast of the resource area. These holes intersected intensely sericitic, pyrite-rich brecciated schist and marble with localized skarn alteration. Assays are pending.

Table 2. Drillhole Coordinates

Hole No.	Easting	Northing	Azimuth	Inclination	Total Depth (m)
SM26-055	507036	4732144	335.00	-45	133
SM26-056	507036	4732144	335.00	-85	169
SM26-057	507036	4732144	335.00	-64	124
Datum: WGS84 (meters)

"This program accomplishes our goal which is to demonstrate that South Mountain has tremendous near-resource expansion potential while opening the door to larger district-scale discovery opportunities. The breadth of alteration and sulfide mineralization encountered in these first drill holes is a significant technical success for the Company. With most assays pending, and while drilling continues, we believe the 2026 program has greatly improved our understanding of the size and scale of the resource," commented Eric T. Jones, President and Chief Executive Officer of Thunder Mountain Gold.

Big Grass Fire Update

The Company also reports that the Big Grass Fire, which originated in Oregon and moved through Owyhee County and the South Mountain District in late July, resulted in no damage to Company structures or equipment. Apart from temporary evacuation delays, the fire has not had a material impact on the 2026 exploration drilling campaign.

Figure 1. Geologic map of the South Mountain polymetallic massive sulfide deposit resource area showing 2026 drillholes.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/8664/314727_d60ee82fe4d48989_001full.jpg

South Mountain Positioned as a U.S. Critical and Precious Metals Growth Asset

The South Mountain Mine is a polymetallic development project containing high-grade silver, zinc, gold, copper, and lead mineralization on private land approximately 70 miles southwest of Boise, Idaho. The project includes a long history of mining, more than 8,000 feet of historic underground workings, and approximately 4,000 feet of rehabilitated MSHA-compliant underground development.

Thunder Mountain Gold has advanced the project since 2007 and invested approximately US$25 million to date. The Company's expanded land position now totals approximately 13,061 acres, or roughly twenty square miles, following the purchase of 113 acres of private land contiguous with the main historic mine area, the staking of 423 mineral lode claims on adjoining BLM lands totaling approximately 8,200 acres, and a lease covering an additional 1,073 acres of private land in and around the project area.

This growing land package, combined with established infrastructure, historical production, a defined mineral resource, and multiple new exploration targets, positions South Mountain as a compelling U.S.-based critical and precious metals opportunity.

Sampling Methodology, Chain of Custody, Quality Control and Quality Assurance

Cutting and sampling of drill core was directed by Thunder Mountain Gold geologists. The drilling contractors transported the core samples to the Company's secure facility in nearby Jordan Valley, Oregon. An independent contractor delivered these and additional surface samples collected by geologists to MSA Labs for sample preparation in Elko, Nevada. The sample prep process included: dry, crush 1kg to 2mm, split 250 g and pulverize rock material to 85% at -75μm. Quality control was monitored by the insertion of numerous blind certified standard reference materials, duplicates, and blanks into each sample shipment. Drill samples were assayed by MSA Labs for gold by fire assay of a 30-gram charge with an AA finish (code FAS-111). Satisfactory results were achieved for all quality control samples related to the data reported herein. In addition, samples were submitted for multi-element analysis (48 elements) by 0.25g 4-acid digestion and ICP-MS ultra-trace finish (code IMS-230).

Technical Data in this Release
The technical information in this news release was reviewed and approved by Steven A. Osterberg, Ph.D., P.G., Q.P. consulting geologist, and is a "Qualified Person" as defined by the U.S. S-K 1300 regulations and National Instrument 43-101 standards. Dr. Osterberg is not independent of the Company as he is an officer.

Cautionary Note to Investors
This news release is intended for distribution only in the United States. Neither the TSX Venture Exchange, the OTCQB, nor their respective regulation services providers accept responsibility for the adequacy or accuracy of this release.

For further information, please contact:
Thunder Mountain Gold, Inc.
Eric T. Jones
President and Chief Executive Officer
Eric@thundermountaingold.com
Office: (208) 658-1037

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/314727

Thunder Mountain Gold Announces Key Leadership Addition Strengthening Exploration Team

Tue, 08 Sep 2026 08:05:00 -0400

Boise, Idaho--(Newsfile Corp. - September 8, 2026) - Thunder Mountain Gold, Inc. (OTCQB: THMG) (TSXV: THM) (the "Company" or "Thunder Mountain Gold") today announced the appointment of Dr. Steven Osterberg as Senior Vice President of Exploration, effective immediately. The Company also announced that Ron Espell has stepped down as Chief Operating Officer.

Dr. Osterberg will lead Thunder Mountain Gold's exploration strategy, including target generation, technical evaluation, drilling programs, and resource-growth initiatives across the Company's project portfolio. His appointment supports the Company's renewed focus on advancing the South Mountain Project in southern Idaho, an advanced-stage polymetallic asset with silver, zinc, gold, copper, and lead mineralization, as well as evaluating broader district-scale exploration opportunities.

"We are pleased to welcome Steve to his new leadership role," said Eric T. Jones, President and Chief Executive Officer of Thunder Mountain Gold. "Steve's technical experience and exploration background will be important as we continue to advance South Mountain and pursue opportunities to expand the Company's mineral resource base. On behalf of the Board and the Company, I want to thank Ron Espell for his service as Chief Operating Officer. Ron contributed meaningful operational, environmental, and permitting insight during an important period for Thunder Mountain Gold, and we wish him continued success in his future endeavors."

Dr. Osterberg added, "I appreciate the opportunity to join Thunder Mountain in leading the exploration at South Mountain on a truly exciting project. The project is rare and compelling with district-scale potential for both new discoveries of silver-zinc massive sulfide mineralization, and for copper-gold. I look forward to building on the team's strong technical foundation towards discovery."

South Mountain Positioned as a U.S. Critical and Precious Metals Growth Asset

The South Mountain Mine is a polymetallic development project containing high-grade zinc, silver, gold, copper, and lead mineralization on private land approximately 70 miles southwest of Boise, Idaho. The project includes a long history of mining, more than 8,000 feet of historic underground workings, and approximately 4,000 feet of rehabilitated MSHA-compliant underground development.

Technical Data in this Release

The technical information in this news release was reviewed and approved by Steven A. Osterberg, Ph.D., P.G., Q.P. consulting geologist, and is a "Qualified Person" as defined by the U.S. S-K 1300 regulations and National Instrument 43-101 standards.

Regarding Thunder Mountain Gold, Inc.

Thunder Mountain Gold Inc., founded in 1935, is a junior exploration company focused on advancing base and precious metals assets in the western United States. The Company's principal asset is the South Mountain Mine, a historic former Anaconda Copper Company development of zinc, silver, gold, lead, and copper located on private land in Owyhee County, Idaho. Thunder Mountain Gold also owns 100% of the Trout Creek Project, a gold exploration asset in Nevada adjacent to and surrounded by Nevada Gold Mines, a Barrick-Newmont joint venture. With a growing land position, established project infrastructure, and exposure to both critical and precious metals, Thunder Mountain Gold offers investors leverage to exploration success in premier U.S. mining jurisdictions. For more information, please visit the Company's website at www.Thundermountaingold.com, www.SEC.gov, and www.sedarplus.ca.

Cautionary Note to Investors

This news release is intended for release in the United States only. Neither the TSX Venture Exchange, the OTCQB, nor either of its Regulation Services Provider accepts responsibility for the adequacy or accuracy of this release.

For further information, please contact:

Thunder Mountain Gold, Inc.
Eric T. Jones
President and Chief Executive Officer
Eric@thundermountaingold.com
Office: (208) 658-1037

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/313242

Thunder Mountain Gold Announces Closing of Private Placement

Fri, 21 Aug 2026 12:30:00 -0400

Vancouver, British Columbia and Boise, Idaho--(Newsfile Corp. - August 21, 2026) - Thunder Mountain Gold, Inc.(TSXV: THM) (OTCQB: THMG) (the "Company" or "Thunder Mountain") is pleased to announce that, further to its news release dated July 8, 2026, the Company has closed its non-brokered private placement (the "Private Placement") consisting of 8,090,451 units of the Company (each, a "Unit") at a price of US$0.70 (CAD$1.00) per Unit for gross proceeds of US$5,663,316 (CAD$8,090,451).

Each Unit consists of one share of the Company's common stock (each, a "Common Share") and one-half of one common share purchase warrant (each whole warrant, a "Warrant"). Each Warrant entitles the holder to purchase one additional Common Share at a price of US$1.00 (CAD$1.42) for a period of 24 months from the date of issuance.

The proceeds raised pursuant to the Private Placement will be used for advancing the South Mountain Project, including drilling, assaying, and geophysical surveys and general administration to carry out these programs.

In connection with the completion of the Private Placement, the Company paid a cash finder's fee to four Canadian brokers in the aggregate amount of US$66,563 (CAD$94,525) and issued an aggregate of 94,089 non-transferable common share purchase warrants (the "Finder Warrants"). Each Finder Warrant entitles the holder to acquire one Common Share (a "Finder Warrant Share") at a price of US$1.00 (CAD$1.42) per Finder Warrant Share for a period of 24 months from the date of issuance.

The Private Placement remains subject to the final approval of the TSX Venture Exchange (the "TSXV").

This news release is issued pursuant to, and in accordance with, Rule 135c under the United States Securities Act of 1933, as amended (the "U.S. Securities Act"), and shall not constitute an offer to sell or the solicitation of an offer to buy; nor shall there be any sale of these securities in any state or jurisdiction in which the offer, solicitation, or sale would be unlawful.

The securities described herein have not been, and will not be, registered under the U.S. Securities Act, or any state securities laws, and accordingly, may not be offered or sold within the United States or to "U.S. persons", as such term is defined in Regulation S promulgated under the U.S. Securities Act, except in compliance with the registration requirements of the U.S. Securities Act and applicable state securities laws, or pursuant to exemptions therefrom. The securities issued in the Private Placement are "restricted securities" under the U.S. Securities Act. The securities issued in the Private Placement to Canadian subscribers are subject to a four-month hold period in accordance with the policies of the TSXV and applicable Canadian securities legislation.

Forward-Looking Statements

This press release contains forward-looking statements that are based on the beliefs of management and reflect the Company's current expectations. Generally, forward-looking statements can be identified by the use of forward-looking terminology such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", "believes" or variations of such words and phrases or statements that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" or the negative connotation thereof. Forward-looking statements in this press release include, but are not limited to, and statements related to the anticipated use of proceeds from the Private Placement. The forward-looking statements are based on certain assumptions, which could change materially in the future. By their nature, forward-looking information involves known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, investors should not place undue reliance on forward-looking information. Forward-looking information is provided as of the date of this press release, and the Company assumes no obligation to update or revise them to reflect new events or circumstances, except as required in accordance with applicable laws.

Cautionary Note to Investors

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

For further information, please contact:

Thunder Mountain Gold, Inc.
Eric T. Jones
President and Chief Executive Officer
eric@thundermountaingold.com
Office: (208) 658-1037

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/310822

Thunder Mountain Gold Announces Proposed Shares for Debt Settlement

Wed, 08 Jul 2026 17:41:00 -0400

Vancouver, British Columbia and Boise, Idaho--(Newsfile Corp. - July 8, 2026) - Thunder Mountain Gold, Inc. (TSXV: THM) (OTCQB: THMG) (the "Company" or "Thunder Mountain") is pleased to announce that its board of directors has approved the proposed issuance of up to 1,578,036 Common Shares at a deemed price per Common Share of US$0.70 (CAD$1.00) to settle outstanding compensations payable to the President and Chief Executive Officer (the "Insider") and to certain former service providers of the Company, including one former officer, in aggregate debt amount of US$1,104,625 (CAD$1,578,036) (the "Debt Settlement").

The issuance of 670,714 Common Shares to the Insider in satisfaction of US$469,500 constitutes a "related party transaction" as defined in Multilateral Instrument 61-101 - Protection of Minority Securityholders in Special Transactions ("MI 61-101"). The Company is relying on the exemption from valuation requirement and minority approval pursuant to subsections 5.5(a) and 5.7(1)(a) of MI 61-101, respectively, as the participation by the Insider in the Debt Settlement does not represent more than 25% of the fair market value of the Company's market capitalization.

The completion of the Debt Settlement remains subject to the approval of the TSX Venture Exchange.

The Common Shares have not been and will not be registered under the U.S. Securities Act of 1933, as amended (the "Securities Act"), or any U.S. state securities laws. The Debt Settlement will be conducted in the United States pursuant to Section 4(a)(2) of the Securities Act and/or Rule 506(b) of Regulation D promulgated thereunder. The Common Shares will constitute "restricted securities" under the Securities Act and shall bear a U.S. restrictive legend, in addition to such additional legends as shall be required under applicable Canadian securities legislation and the policies of the TSX Venture Exchange.

The Common Shares issued in the Debt Settlement will be subject to a four-month hold period in accordance with the policies of the TSX Venture Exchange and applicable Canadian securities legislation, in addition to such other restrictions as may apply under the Securities Act.

This news release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which the offer, solicitation or sale would be unlawful.

Regarding Thunder Mountain Gold, Inc.

Thunder Mountain Gold Inc., a junior exploration company founded in 1935, owns interests in base and precious metals projects in the western U.S. The Company's principal asset is The South Mountain Mine, a historic former Anaconda Mining development of silver, gold, zinc, copper, and lead, located on private land in Owyhee County Idaho. Thunder Mountain Gold also owns 100% of the Trout Creek Project - a gold exploration project located along the western flank of the Shoshone Mountain Range in the Reese River Valley, adjacent to and surrounded by Nevada Gold Mines, a Barrick and Newmont Gold, Inc. joint venture. For more information on Thunder Mountain Gold, please visit the Company's website at www.Thundermountaingold.com.

The South Mountain Project

The South Mountain Mine is a polymetallic development project containing high-grade zinc, silver, gold, and copper, and is located on private land approximately 70 miles southwest of Boise, Idaho. The Project is on private land, permitting has been, and should remain straightforward. The Project was intermittently mined from the late 1940s to the late 1960s, most notably by Anaconda Copper, with over 8,000 feet of underground developmental workings that that have been rehabilitated, re-engineered, and are MSHA compliant. Thunder Mountain Gold Inc. purchased and advanced the project from 2007 through Present, with expenditures into the project of approximately US$25 million. Historic test mining and processing at the Project has mostly come from high-grade Carbonate Replacement Deposits (CRD) and skarn zones that remain open at depth and along strike. According to historical smelter records, approximately 53,642 tons of mineralized material have been mined and direct shipped to the smelter, with average grades; 14.5% Zn, 10.6 o.p.t. Ag (363.42 g/t Ag), 0.058 o.p.t. Au (1.98 g/t Au), 1.4% Cu, and 2.4% Pb were realized (See SK-1300 Technical Resource Statement, and NI 43-101 Technical Report: Updated Mineral Resource Estimate for the South Mountain Project, dated December 31, 2023, and December 15, 2023, respectively. More details are available on the Thunder Mountain Gold Inc. website and at www.SEC.gov, and www.sedarplus.ca).

Technical Data in this Release

Forward-Looking Statements

This press release contains forward-looking statements that are based on the beliefs of management and reflect the Company's current expectations. Generally, forward-looking statements can be identified by the use of forward-looking terminology such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", "believes" or variations of such words and phrases or statements that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" or the negative connotation thereof. The forward-looking statements are based on certain assumptions, which could change materially in the future. By their nature, forward-looking information involves known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, investors should not place undue reliance on forward-looking information. Forward-looking information is provided as of the date of this press release, and the Company assumes no obligation to update or revise them to reflect new events or circumstances, except as required in accordance with applicable laws.

Cautionary Note to Investors

For further information, please contact:

Thunder Mountain Gold, Inc.
Eric T. Jones
President and Chief Executive Officer
eric@thundermountaingold.com
Office: (208) 658-1037

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/304464

Thunder Mountain Gold Announces Private Placement Financing

Wed, 08 Jul 2026 17:38:00 -0400

Vancouver, British Columbia and Boise, Idaho--(Newsfile Corp. - July 8, 2026) - Thunder Mountain Gold, Inc. (TSXV: THM) (OTCQB: THMG) (the "Company" or "Thunder Mountain") is pleased to announce that its board of directors has approved a non-brokered private placement, as described further below, for an aggregate value of up to approximately US$6.4 million in gross proceeds raised through the issuance of up to 9,143,000 units of the Company (each, a "Unit") at a price of US$0.70 (CAD$1.00) (the "Private Placement"). Each Unit will consist of one share of the Company's common stock (each, a "Common Share") and one-half common share purchase warrant (each whole warrant, a "Warrant"). Each Warrant will entitle the holder to purchase one additional Common Share (each, a "Warrant Share") at a price of US$1.00 (CAD$1.42) for a period of 24 months from the date of issuance. Subject to regulatory approval, the Company may close the Private Placement in one or more tranches.

The proceeds raised pursuant to the Private Placement will be used for advancing the South Mountain Project, including drilling, assaying, geophysical surveys, and general administration to carry out these programs.

The completion of the Private Placement remains subject to the approval of the TSX Venture Exchange.

The Units, the underlying Common Shares and Warrants, and the Warrant Shares issuable upon exercise of the Warrants, have not been and will not be registered under the U.S. Securities Act of 1933, as amended (the "Securities Act"), or any U.S. state securities laws, and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements. The Private Placement will be conducted (i) in the United States pursuant to Section 4(a)(2) of the Securities Act and/or Rule 506(b) of Regulation D promulgated thereunder (the "U.S. Offering"), and (ii) outside the United States pursuant to Regulation S under the Securities Act (the "Regulation S Offering"). The Warrants may not be exercised by or for the account or benefit of a U.S. person or a person in the United States absent an exemption from the registration requirements of the Securities Act and any applicable U.S. state securities laws. The Units, the underlying Common Shares and Warrants, and any Warrant Shares issued upon exercise of the Warrants, will be "restricted securities" under the Securities Act and shall bear a U.S. restrictive legend, in addition to such additional legends as shall be required under applicable Canadian securities legislation and the policies of the TSX Venture Exchange.

Subject to the approval of the TSX Venture Exchange, the Company intends to pay finder's fees to certain finders (collectively, the "Finders") in an amount up to 6% of the gross proceeds raised under the Private Placement and by the issuance of that number of non-transferable common share purchase warrants (the "Finder Warrants"). Each Finder Warrant will entitle the holder to acquire one common share in the capital of the Company (the "Finder Warrant Share") at a price of US$1.00 (CAD$1.42) per Finder Warrant Share for a period of 24 months from the date of issuance. Any Finder that receives compensation in connection with the offer or sale of securities in the United States or to U.S. persons, or otherwise engages in activities that would constitute acting as a "broker" within the meaning of Section 3(a)(4) of the U.S. Securities Exchange Act of 1934, as amended (the "Exchange Act"), must either: (i) be registered as a broker-dealer with the U.S. Securities and Exchange Commission (the "SEC") pursuant to Section 15(a) of the Exchange Act; or (ii) qualify for an applicable exemption from such registration requirement under U.S. federal securities laws.

The securities issued in the Private Placement will be subject to a four-month hold period in accordance with the policies of the TSX Venture Exchange and applicable Canadian securities legislation, in addition to such other restrictions as may apply under the Securities Act.

This press release is being issued pursuant to and in accordance with Rule 135c under the Securities Act.

Regarding Thunder Mountain Gold, Inc.

The South Mountain Project

Technical Data in this Release

Forward-Looking Statements

This press release contains forward-looking statements that are based on the beliefs of management and reflect the Company's current expectations. Generally, forward-looking statements can be identified by the use of forward-looking terminology such as "plans", "expects", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates", "believes" or variations of such words and phrases or statements that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" or the negative connotation thereof. The forward-looking statements are based on certain assumptions, which could change materially in the future. By their nature, forward-looking information involves known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking information. There can be no assurance that forward-looking information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, investors should not place undue reliance on forward-looking information. Forward-looking information is provided as of the date of this press release, and the Company assumes no obligation to update or revise them to reflect new events or circumstances, except as required in accordance with applicable laws.

Cautionary Note to Investors

For further information, please contact:

Thunder Mountain Gold, Inc.
Eric T. Jones
President and Chief Executive Officer
eric@thundermountaingold.com
Office: (208) 658-1037

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/304462

Thunder Mountain Gold Launches 2026 Drill Program at South Mountain

Mon, 22 Jun 2026 09:30:00 -0400

Boise, Idaho--(Newsfile Corp. - June 22, 2026) - Thunder Mountain Gold, Inc. (OTCQB: THMG) (TSXV: THM) ("Thunder Mountain Gold" or the "Company") is pleased to announce the launch of its 2026 exploration drilling campaign at the South Mountain Project in southern Idaho (the "South Mountain" or the "Project"). The Company's initial 10,000-foot program is designed to expand the established carbonate replacement deposit (CRD) silver, zinc, copper, lead and gold massive sulfide resource, while also advancing the first drill tests of compelling district-scale copper-gold targets. This new campaign marks an important step in unlocking the broader value potential of the South Mountain district for shareholders and resource investors worldwide.

Drilling Focus for 2026

Resource Expansion and Step-Out Potential - The initial 10,000-foot program is now underway and is designed to accelerate expansion of the CRD massive sulfide resource along strike, representing approximately twice the surface core drilling completed to date at South Mountain. The program will also test compelling magnetotelluric (MT) and induced polarization (IP) geophysical anomalies that are spatially associated with the known resource and supported by surface geological mapping, highlighting a strong opportunity to expand the mineralized footprint and advance the knowledge across the Project.

Testing New MT and Geological Targets - In 2025, the Company began an ambitious district-wide exploration program aimed at identifying the potential source or sources of the polymetallic massive sulfide mineralization and additional mineralized zones within the Laxey Marble. Integrated modeling of MT and surface geological data outlined several highly prospective anomalies (see Figure 1) including anomalies below the Gold Breccia target, further supported by historic IP data and more recent pulse electromagnetic (PEM) and ground magnetic surveys. Further geophysical work, including airborne magnetics and additional MT surveys, is planned later in the season. These programs are expected to sharpen target definition and could support additional step-out drilling across the district, providing the Company with multiple opportunities to build exploration momentum.

Gold Breccia Target - In 2009, the Company identified a new discovery in the Gold Breccia (See figure 1) which documented a gold-bearing heterolithic breccia of about 1,000 meters in strike length by 800 meters wide (Figure 1). In 2010, reverse circulation drilling returned results including 84 meters grading 0.221 g/t Au and 81 meters grading 0.289 g/t Au (see press release dated September 1, 2010, and October 4, 2010).

Eric Jones, President and CEO of Thunder Mountain Gold Inc. commented, "We are excited to launch this season's drill program with a proven, high-quality contractor in Big Sky Exploration. Their strong reputation for safe, productive core drilling gives us added confidence as we advance South Mountain. We believe this program has the potential to enhance our resource base, improve our understanding of the broader district, and generate meaningful value catalysts for our shareholders."

Big Sky Exploration, based in Eureka, Nevada, has mobilized a Boart Longyear LF™90D heavy-duty track-mounted surface coring drill rig with telescoping dump mast, providing the capability and flexibility to operate efficiently and safely across varying site conditions (Figure 2). The LF 90 has a depth capacity of up to 3,000 feet (~1,000 meters), positioning the Company to test both resource expansion opportunities and deeper district-scale targets with H-size core drilling from surface.

The South Mountain Mine

The South Mountain Mine is a polymetallic development project containing high-grade zinc, silver, gold, and copper (see Table 1), located on private land approximately 70 miles southwest of Boise, Idaho. Historic mining at South Mountain began in the 1860s. Modern mining was done as part of the World War II effort and operated intermittently from the late 1940s through the late 1960s, most notably by Anaconda Copper, and includes more than 8,000 feet of drifts, shafts, raises and stopes. The Company acquired the mine in 2007 and rehabilitated approximately 4,000 feet of underground workings that is MSHA compliant. Underground core drilling along newly developed drift blocked out significant massive sulfide ore associated with the ore chutes. This combination of historic production, established underground access, and attractive metal exposure gives South Mountain a strong foundation as an emerging U.S. critical and precious metals project.

Thunder Mountain Gold has advanced the project since 2007 and invested approximately US$25 million to date. Historic test mining and processing focused primarily on high-grade Carbonate Replacement Deposit (CRD) zones that remain open at depth and along strike. Thunder Mountain's exploration and development drilling at South Mountain has defined a broad silver, zinc, copper and gold footprint with compelling district-scale potential, supporting the Company's ongoing strategy to consolidate and expand its land position. The Company recently announced the purchase of 113 acres of private land contiguous with the main historic mine area. This acquisition includes strategic exploration ground associated with the Gold Breccia target and supports continued advancement of the South Mountain Project. In addition, the Company has staked 423 mineral lode claims on adjoining BLM lands totaling approximately 8,200 acres and secured a lease on an additional 1,073 acres of private land in and around the project area. Including the State of Idaho lease, these transactions have expanded the Company's property position by a total of 13,061 acres, or roughly twenty square miles, significantly enhancing the scale of the exploration opportunity.

According to historical smelter records, approximately 53,642 tons of mineralized material were mined and direct shipped to the smelter at average realized grades of 14.5% Zn, 10.6 o.p.t. Ag (363.42 g/t Ag), 0.058 o.p.t. Au (1.98 g/t Au), 1.4% Cu, and 2.4% Pb (see S-K 1300 Technical Resource Statement and NI 43-101 Technical Report: Updated Mineral Resource Estimate for the South Mountain Project, dated December 31, 2023, and December 15, 2023, respectively). More information is available on the Company's website and at www.SEC.gov and www.sedarplus.ca.

Table 1. South Mountain mineral resource estimate.

		Silver		Gold		Zinc	Copper	Lead
Classification	tons	ounces/ ton	ounces (x 1,000)	ounces/ ton	ounces	%	%	%
Measured	69,000	3.84	264	0.058	4,000	9.18	0.6	0.67
Indicated	154,000	4.47	688	0.06	9,300	8.95	0.66	1.06
Measured + Indicated	223,000	4.27	953	0.059	13,300	9.02	0.64	0.94
Inferred	959,000	5.67	5,438	0.037	35,200	7.56	0.80	1.06

Refer to S-K 1300 Technical Resource Statement and NI 43-101 Technical Report: Updated Mineral Resource Estimate for the South Mountain Project, dated December 31, 2023, and December 15, 2023, respectively.

Figure 1: South Mountain Mine area with Laxey Marble, CRD massive sulfide resource area, Gold Breccia, and planned drill holes.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/8664/302337_figure1.jpg

Figure 2: Priority MT anomalies, Laxey Marble and proposed drill holes.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/8664/302337_figure2.jpg

Technical Data in this Release

Regarding Thunder Mountain Gold, Inc.

Cautionary Note to Investors

This news release is intended for release in the United States only. Neither the TSX Venture Exchange, the OTCQB, nor either of its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

For further information, please contact:

Thunder Mountain Gold, Inc.
Eric T. Jones
President and Chief Executive Officer
Eric@thundermountaingold.com
Office: (208) 658-1037

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/302337

Thunder Mountain Gold Announces Change of Independent Registered Public Accounting Firm

Tue, 09 Jun 2026 11:13:00 -0400

Boise, Idaho--(Newsfile Corp. - June 9, 2026) - Thunder Mountain Gold, Inc. (OTCQB: THMG) (TSXV: THM) ("Thunder Mountain Gold" or the "Company") announced today Assure CPA, LLC ("Assure"), the Company`s long time Independent Registered Public Accounting Firm, has been acquired by Sadler, Gibb & Associates, LLC ("Sadler Gibb"). Consequently, Assure will be resigning its role as the Company`s Independent Registered Public Accounting Firm. This resignation follows the sale of substantially all of Assure's assets to Sadler, Gibb & Associates, LLC ("Sadler Gibb").

As part of the transaction, Assure has ceased its operations as a public accounting firm, and the professionals who have served the Company are continuing in their roles at Sadler Gibb. The Company has filed a Current Report on Form 8-K under Item 4.01 (Changes in Registrant's Certifying Accountant). Additionally, the Company has filed all related documents on SEDAR+ in Canada, along with the issuance of this news release announcing the change in compliance with TSX-V regulations.

About Sadler Gibb and Associates, LLC

Sadler Gibb is a Utah-headquartered, PCAOB-registered public accounting firm with offices in Salt Lake City and Draper. The firm was founded approximately 17 years ago by partners Big Four, Global, and regional practices and wanted to combine that level of technical depth with the responsiveness and senior-partner access of a boutique firm. The firm now serves more than 500 clients across tax, assurance, advisory, and financial services, with particular strength in SEC reporting, M&A , and complex technical accounting. Memberships include the PCAOB, AICPA, UACPA, and CPAB. Core competencies. PCAOB-registered audits of public companies; SEC filings, S-1 registrations and NASDAQ up-listings; complex technical accounting (revenue recognition, stock-based compensation, convertible debt and embedded derivatives, business combinations, goodwill and asset impairment, variable interest entities); M&A and transaction advisory; federal and multi-state tax compliance; IRS problem resolution; advisory and CFO-level services.

Regarding Thunder Mountain Gold, Inc.

Thunder Mountain Gold Inc., founded in 1935, is a junior exploration company with interests in base and precious metals projects in the western United States. It had its start in the Thunder Mountain Mining District in central Idaho. Today, its principal asset is the South Mountain Mine, a historic former Anaconda Copper Company development of zinc, silver, gold, lead, and copper located on private land in Owyhee County, Idaho. The Company also owns 100% of the Trout Creek Project, a gold exploration project in Nevada adjacent to and surrounded by Nevada Gold Mines, a Barrick-Newmont joint venture. For more information, please visit the Company's website at www.Thundermountaingold.com, and at www.SEC.gov and www.sedarplus.ca.

Cautionary Note to Investors

For further information, please contact:

Thunder Mountain Gold, Inc.
Eric T. Jones
President and Chief Executive Officer
Eric@thundermountaingold.com
Office: (208) 658-1037

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/300753

Thunder Mountain Gold Significantly Increases Land Position at The South Mountain Property

Mon, 01 Jun 2026 09:02:00 -0400

Boise, Idaho--(Newsfile Corp. - June 1, 2026) - Thunder Mountain Gold, Inc. (OTCQB: THMG) (TSXV: THM) ("Thunder Mountain Gold" or the "Company") is pleased to announce that it has secured a 20-year mineral lease ("Lease") with the Idaho Department of Lands ("IDL" or the "Lessor"), through its wholly owned subsidiary, South Mountain Mines Inc., covering approximately 3,675 acres of state-owned land adjacent to the Company's South Mountain Mines Property in Owyhee County, Idaho. The Lease expands the Company's district-wide land position at South Mountain and supports continued exploration, development, and potential mining across a highly prospective area.

The Lease has an initial 20-year term, commencing March 1, 2026, and expiring February 28, 2046, with extension rights subject to Idaho law and agreement with the Lessor. The Lease and associated commitments underscore the Company's long-term investment in the project and its contribution to Idaho's critical minerals development. The mineral Lease was approved by the Idaho State Land Board and signed by Governor Brad Little on May 20, 2026.

Eric T. Jones, President and CEO of Thunder Mountain Gold, commented: "This Lease significantly strengthens our South Mountain land position and advances our district-wide exploration strategy. With this expanded footprint, we are better positioned to evaluate the broader mineral potential of the South Mountain Complex and pursue opportunities to enhance long-term project value. We appreciate the State of Idaho's constructive support for responsible resource development."

Thunder Mountain Gold has continuously advanced the South Mountain Mine and surrounding district since 2007. While work through 2024 focused primarily on the underground silver-rich polymetallic resource, the broader surrounding area remained comparatively underexplored. The Company's 2025 exploration work consisting of geophysical surveys, field mapping and sampling has identified encouraging porphyry potential across the broader project area. Follow-up mapping and geophysical work have highlighted multiple trends within the newly consolidated land package, and the Company plans additional geophysical programs to further assess these high-priority targets.

About the Idaho Department of Lands

The Idaho Department of Lands manages over 3.4 million acres of state endowment trust land, with a mandate to maximize revenue for the benefit of public schools and other institutions. Mineral leasing is a key component of this mission, contributing to Idaho's economic development and educational funding.

Additional Land Acquisition

The Company has also purchased 113 acres of private land contiguous with the main mine area. This acquisition includes strategic exploration ground associated with the Gold Breccia target and supports continued advancement of the South Mountain project. In addition, the Company has recently located 423 mineral lode claims on adjoining BLM lands totaling approximately 8,200 acres and secured a lease on an additional 1,073 acres of private land in and around the project area.

With the State of Idaho lease, the above land acquisition and new mining claims, the property position has increased by a total of 13,061 acres or about twenty (20) square miles.

Commitment to Responsible Stewardship

Throughout its 90-year history, the Company has maintained a strong commitment to responsible environmental stewardship across its land holdings in Idaho. In 2005, the Company sold the Thunder Mountain Mine in Valley County, Idaho, to the U.S. Forest Service and donated thousands of acres for conservation through Trust for Public Land, a national nonprofit organization dedicated to expanding access to the outdoors.

The Company remains committed to complying with all regulatory requirements and implementing best practices to ensure environmental stewardship and community engagement through each step in the project.

The South Mountain Project

The South Mountain Mine is a polymetallic development project containing high-grade zinc, silver, gold, and copper, located on private land approximately 70 miles southwest of Boise, Idaho. The project was intermittently mined from the late 1940s through the late 1960s, most notably by Anaconda Copper, and includes more than 4,000 feet of rehabilitated underground development that is MSHA compliant. Thunder Mountain Gold has advanced the project since 2007 and invested approximately US$25 million to date. Historic test mining and processing focused primarily on high-grade Carbonate Replacement Deposit (CRD) and skarn zones that remain open at depth and along strike. According to historical smelter records, approximately 53,642 tons of mineralized material were mined and direct shipped to the smelter at average realized grades of 14.5% Zn, 10.6 o.p.t. Ag (363.42 g/t Ag), 0.058 o.p.t. Au (1.98 g/t Au), 1.4% Cu, and 2.4% Pb (see SK-1300 Technical Resource Statement and NI 43-101 Technical Report: Updated Mineral Resource Estimate for the South Mountain Project, dated December 31, 2023, and December 15, 2023, respectively). More information is available on the Company's website and at www.SEC.gov and www.sedarplus.ca.

Technical Data in this Release

The technical information in this news release was reviewed and approved by Steven A. Osterberg, Ph.D., P.G., Q.P. consulting geologist, and a "Qualified Person" as defined by the U.S. SK-1300 regulations & National Instrument 43-101 (Canada) standards.

Regarding Thunder Mountain Gold, Inc.

Thunder Mountain Gold Inc., founded in 1935, is a junior exploration company with interests in base and precious metals projects in the western United States. It had its start in the Thunder Mountain Mining District in central Idaho; in 2005 the Company sold its patented and unpatented mining claims and interest to the Trust for Public Lands and the US Forest Service. Today, its principal asset is the South Mountain Mine, a historic former Anaconda Copper Company development of zinc, silver, gold, lead, and copper located on private land in Owyhee County, Idaho. The Company also owns 100% of the Trout Creek Project, a gold exploration project in Nevada adjacent to and surrounded by Nevada Gold Mines, a Barrick-Newmont joint venture. For more information, please visit the Company's website at www.Thundermountaingold.com.

Cautionary Note to Investors

For further information, please contact:

Thunder Mountain Gold, Inc.
Eric T. Jones
President and Chief Executive Officer
Eric@thundermountaingold.com
Office: (208) 658-1037

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/299580

Thunder Mountain Gold Announces Bylaw Amendment and AGM Voting Results

Thu, 05 Feb 2026 16:56:00 -0500

Boise, Idaho--(Newsfile Corp. - February 5, 2026) - Thunder Mountain Gold, Inc. (OTCQB: THMG) (TSXV: THM) ("Thunder Mountain Gold" or the "Company").

The Board of Directors (the "Board") of the Company approved an amendment to the Company's Bylaws (the "Bylaws"), effective prior to the Company's annual meeting of shareholders held on January 28, 2026 (the "Annual Meeting"). The sole purpose of the amendment was to amend the quorum requirements of the meetings of shareholders, from a majority of the outstanding shares of the Company entitled to vote, to one-third (1/3) of the outstanding shares of the Company entitled to vote, represented in person or by proxy.

The Annual Meeting was held on January 28, 2026, pursuant to a definitive notice and proxy statement filed with the SEC on December 23, 2025. The Company's shareholders approved the election of all directors, and the appointment of Assure CPA, LLC as the Company's auditor for the ensuing fiscal year. The directors elected to serve on the Board for the ensuing year are Eric T. Jones, Ralph Noyes, Doug Glaspev, and James Sabala.

Regarding Thunder Mountain Gold, Inc.

Thunder Mountain Gold Inc., a junior exploration company founded in 1935, owns interests in base and precious metals projects in the western U.S. The Company's principal asset is The South Mountain Mine, a historic former Anaconda Copper Company development of zinc, silver, gold, lead, and copper, located on private land in Owyhee County Idaho. Thunder Mountain Gold also owns 100% of the Trout Creek Project - a gold exploration project located along the western flank of the Shoshone Mountain Range in the Reese River Valley, adjacent to and surrounded by Nevada Gold Mines, a Barrick and Newmont Gold, Inc. joint venture. For more information on Thunder Mountain Gold, please visit the Company's website at www.Thundermountaingold.com.

Cautionary Note to Investors

For further information, please contact:

Thunder Mountain Gold, Inc.
Eric T. Jones
President and Chief Executive Officer
Eric@thundermountaingold.com
Office: (208) 658-1037

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/282931