Toronto, Ontario – July 2, 2021 – Excellon Resources Inc. (TSX:EXN, EXN.WT; NYSE:EXN; FRA:E4X2) (“Excellon” or the “Company”) is providing an update on the legal action in Mexico disclosed on December 5, 2019 in respect of the La Antigua mineral concession (“La Antigua”) that is part of the Evolución Property in Zacatecas. La Antigua was included in Excellon’s acquisition of Silver Eagle Mines Inc. (“Silver Eagle”) in 2009 and includes a portion of the Evolución mineral resource at Miguel Auza. The concession is subject to an exploration and exploitation agreement with purchase option (the “Agreement”) dated December 3, 2006 between San Pedro Resources SA de CV (“San Pedro”, now a subsidiary of Excellon) and the owner (the “Plaintiff”) that provides, among other things, for a minimum payment of US$2,500 plus value added tax per month (the “Advance Royalty”) and the payment of a 3% net smelter return (“NSR”) royalty. San Pedro has the right to purchase absolute title to La Antigua including the NSR royalty upon payment of US$500,000. San Pedro has accrued the Advanced Royalty on an ongoing basis and the Agreement currently remains in force.