| Dolly Varden Silver Increases Scope of 2025 Kitsault Valley Drill Program to 55,000 Meters, Adds Fifth Drill 
 newsfilecorp.com
 
 July 24, 2025 8:00 AM EDT | Source:  Dolly Varden Silver Corporation
 
 Vancouver, British Columbia--(Newsfile Corp. - July 24, 2025) - Dolly  Varden Silver Corporation (TSXV: DV) (NYSE American: DVS) (FSE: DVQ)  (the "Company" or "Dolly Varden") has increased the  previously announced 35,000 meter, drill program to 55,000 meters.  Drilling will prioritize the Wolf vein extension, where the Company  continues to intersect mineralization on step outs and infill drilling  as well as testing multiple silver, gold and copper exploration targets  at the Kitsault Valley and Big Bulk Projects.
 
 "With the strong  support of our shareholders in the recently completed financing, Dolly  Varden is well positioned to significantly expand its exploration  drilling based on a strong start to the season, enabling us to test key  exploration targets and continue expanding the high-grade silver zone at  the Wolf Vein," states Shawn Khunkhun, president and CEO of Dolly  Varden Silver.
 
 The company is well into the drilling program  with approximately 17,000 meters already completed, with testing  priority exploration targets at the Moose, Chance and Red Point  Prospects.  Additionally, systematic step-outs at the Wolf Vein, where  alteration and structural studies suggest that vein mineralization at  Wolf is becoming increasingly robust with a higher temperature  alteration signature towards the southwest, as it approaches the  projection of the Central Valley/Moose Lamb, basin bounding fault system  that connects through from the Torbrit Silver Deposit.
 
 A fifth  drill rig has been mobilized to the Project, drilling at the Big Bulk  copper-gold porphyry system located 10 kilometers east of the Torbrit  silver deposit. Two drills remain on Wolf vein directional drilling,  testing down plunge and stepping out in search of the mid-valley  structural intercept. The other two drills are currently at the  Homestake Silver deposit after completing several exploration holes at  Red Point, Chance and the Moose Vein.
 
 In addition to the drilling  increase, our geological team has been able to intensify geological  field work including mapping and sampling of underexplored areas on the  recently consolidated claim packages, now totaling 100,000 Ha of  prospective Hazelton formation rocks. This work will develop drill  targets for late 2025 and 2026 exploration programs.
 
 
  
 Figure 1.   Dolly Varden Silver's Kitsault Valley Project and Big Bulk Project including target areas for the 2025 drill program.
 
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 Directional Drilling
 
 By  shifting the focus from total meterage to strategically placed  intercepts, Dolly Varden is executing a more precise and sustainable  drilling strategy. The directional drilling has allowed the Company to  decrease total meters drilled by utilizing the same mother hole numerous  times. The 55,000 meters is estimated using the total length of each  drill hole as if each hole started from surface. Since the total  meterage estimate includes those "re-drilled" mother hole lengths actual  meters of new core will be in the order of 41,000 meters, thus  achieving the same number of mineralized intercepts while drilling  significantly fewer meters at Wolf and Homestake Silver.
 
 Qualified Person
 
 Rob  van Egmond, P.Geo., Vice-President Exploration for Dolly Varden, the  "Qualified Person" as defined by NI 43-101 has reviewed and approved the  scientific and technical information contained in this news release.   Rob van Egmond, P.Geo. is not independent of the Company in accordance  with NI 43-101.
 
 About Dolly Varden Silver Corporation
 
 Dolly  Varden Silver Corporation is a mineral exploration company focused on  advancing its 100% held Kitsault Valley Project (which combines the  Dolly Varden Project and the Homestake Ridge Project) located in the  Golden Triangle of British Columbia, Canada, 25kms by road to tide  water. Including the Kitsault Valley Project, the Company has  consolidated approximately 100,000Ha of prospective tenure in the Golden  Triangle with 5 past producing high-grade silver mines including Dolly  Varden, Torbrit, Porter Idaho, Mountain Boy and Esperanza historic  mines. The 163 sq. km. Kitsault Valley Project hosts the high-grade  silver and gold resources of Dolly Varden and Homestake Ridge along with  the past producing Dolly Varden and Torbrit silver mines. It is  considered to be prospective for hosting further precious metal  deposits, being on the same structural and stratigraphic belts that host  numerous other, on-trend, high-grade deposits, such as Eskay Creek and  Brucejack. The Kitsault Valley Project also contains the Big Bulk  property which is prospective for porphyry and skarn style copper and  gold mineralization, similar to other such deposits in the region (Red  Mountain, KSM, Red Chris).
 
 Forward Looking Statements
 
 This  release may contain forward-looking statements or forward-looking  information under applicable securities legislation that may not be  based on historical fact, including, without limitation, statements  containing the words "believe", "may", "plan", "will", "estimate",  "continue", "anticipate", "intend", "expect", "potential", "prospective"  and similar expressions. Forward-Looking statements involve known and  unknown risks, uncertainties, and other factors which may cause the  actual results, performance, or achievements of Dolly Varden to be  materially different from any future results, performance, or  achievements expressed or implied by the forward-looking statements,  including, without limitation, risks associated with the speculative  nature of exploration and development of minerals; the anticipates  substantial future capital expenditures associated with the exploration  and development of its assets and there can be no assurance that debt or  equity financing will be available; inherent competition in the mining  industry; risks associate with volatility in mineral prices; risks  inherent in the estimation of mineral resources; environmental risks  associated with the exploration and development of mineral properties;  the Company is reliant on key personnel; risks associated with working  in remote regions; risks associated with maintaining positive community  relations; and the other risks disclosed in the Company's annual  information form ("AIF") dated April 30, 2025 for the year ended December 31, 2024, which is available on SEDAR+ at  www.sedarplus.ca,  and in the Company's Form 40-F registration statement as filed with the  U.S. Securities and Exchange Commission, which is available on EDGAR at  www.sec.gov. The risk factors identified in the Company's public  filings are not intended to represent a complete list of factors that  could affect the Company. Forward-looking statements are based on  management's current expectations and beliefs and assume, among other  things, the ability of the Company to satisfy the requirements of  listing and registration, and to successfully pursue its current  development plans, that future sources of funding will be available to  the Company, that relevant commodity prices will remain at levels that  are economically viable for the Company and that the Company will  receive relevant permits in a timely manner in order to enable its  operations, but given the uncertainties, assumptions and risks, readers  are cautioned not to place undue reliance on such forward-looking  statements or information. The Company disclaims any obligation to  update, or to publicly announce, any such statements, events or  developments except as required by law.
 
 Neither the TSX  Venture Exchange nor its Regulation Services Provider (as that term is  defined in the policies of the TSX-V) accepts responsibility for the  adequacy or accuracy of this news release.
 
 For further information: Shawn Khunkhun, CEO & Director, 1-604-609-5137,  www.dollyvardensilver.com.
 
 
  SOURCE:  Dolly Varden Silver Corporation |