Mr. Dan Dickson reports

ENDEAVOUR SILVER CONTINUES TO INTERSECT HIGH-GRADE SILVER-GOLD MINERALIZATION AT THE BOLANITOS OPERATION

Endeavour Silver Corp. has released positive drill results from its exploration program at the Bolanitos mine in Guanajuato state, Mexico. The 2023 program mainly focused on two areas: drilling the El Puertecito and Fortuna veins. At both areas, surface drilling intersected high-grade gold and silver mineralization near historic workings and provide opportunities to increase resources, replace reserves and extend mine life.

Dan Dickson, chief executive officer, commented: "Our track record of exploration success has sustained operations at Bolanitos for over 16 years. Ongoing exploration results demonstrate our commitment to targeted and cost-effective brownfields exploration, which has been successfully extending mine life in this historically rich district. We continue to make progress year over year in understanding the regional mineralization system and remaining prospectivity at Bolanitos."

Highlight drill results from El Puertecito vein structure:

• 8.78 grams per tonne gold (Au) and 86 g/t silver (Ag) for 788 g/t silver equivalent (AgEq) over a 2.09 m ETW (estimated true width), including 25.7 g/t Au and 59 g/t Ag for 2,115 g/t AgEq over 0.57 m in hole GOL-11.
• 4.44 g/t gold and 94 g/t silver for 449 g/t AgEq over a 2.07 m ETW, including 11.35 g/t Au and 258 g/t Ag for 1,166 g/t AgEq over 0.56 m in hole GOL-09.

Highlight drill results from Fortuna vein structure:

• 4.01 g/t Au and 135 g/t Ag for 456 g/t AgEq over a 1.18 m ETW, including 8.04 g/t Au and 280 g/t Ag for 923 g/t AgEq over 0.56 m in hole GOL-42.

Drilling context

At El Puertecito, since the beginning of the year, 32 new holes were completed totalling 5,833 metres. El Puertecito is a new area south of Bolanitos, situated 300 metres northeast from Endeavour Silver's historic Golondrinas mine. Due its proximity to existing infrastructure, minimal development would be required to incorporate El Puertecito into a mine plan. New high-grade vein mineralization has now been delineated over 400 metres in length to a depth of 120 metres. The structure remains open at depth and to the southeast.

At Fortuna, 13 holes were completed totalling 2,922 metres. Fortuna is located south of Bolanitos situated 200 metres from current accesses to the Lana vein of Endeavour Silver's Lucero mine. Two structures have been delineated to define a mineralized zone of 250 metres in length and 100 metres to depth, open to the southeast.

Latest drill results

The Bolanitos drill results are summarized in the tables entitled "El Puertecito vein" and "Fortuna vein."

Qualified person and quality assurance/quality control (QA/QC)

Dale Mah, PGeo, vice-president of corporate development for Endeavour Silver, is the qualified person who reviewed and approved the technical information contained in this news release. A quality control sampling program of reference standards, blanks and duplicates has been instituted to monitor the integrity of all assay results. All samples are split at the local field office and shipped to SGS Labs, where they are dried, crushed, split and 250-gram pulp samples are prepared for analysis. Gold is determined by fire assay with an atomic absorption finish and silver by aqua regia digestion with ICP (inductively coupled plasma) finish, with overlimits by fire assay and gravimetric finish.

About Endeavour Silver Corp.

Endeavour is a mid-tier precious metals mining company that operates two high-grade underground silver-gold mines in Mexico. Endeavour is advancing construction of the Terronera project and exploring its portfolio of exploration projects in Mexico, Chile and the United States to achieve its goal of becoming a premier senior silver producer. The company's philosophy of corporate social integrity creates value for all stakeholders.

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