Excellon Announces Availability of Meeting Materials, Alternative Voting Procedures and Adoption of Amended Share Incentive Plan

Toronto, Ontario--(Newsfile Corp. - October 17, 2025) - Excellon Resources Inc. (TSXV: EXN) (OTC Pink: EXNRF) (FSE: E4X2) ("Excellon" or the "Company") announces that its upcoming annual and special meeting (the "Meeting") of shareholders (the "Shareholders") of the Company will be held virtually through the platform of AGM Connect at www.agmcmeeting.com on Tuesday, November 18, 2025 at 10:00 a.m. (Toronto time).

The Company has sent the proxy-related materials (the "Meeting Materials") by mail; however, due to the recent disruption of Canada Post's services as a result of labour action by the Canadian Union of Postal Workers, there is no assurance that the Meeting Materials will be received by the Shareholders prior to the Meeting.

Shareholders are encouraged to access the Meeting Materials directly through the Company's website at www.excellonresources.com, under the Company's profile on the SEDAR+ website at www.sedarplus.ca or through AGM Connect's website at www.agmconnect.com/current-meetings, and to vote before the proxy deadline of 10:00 a.m. (Toronto time) on Friday, November 14, 2025.

How Registered Shareholders Can Vote

Registered shareholders are shareholders who hold their shares in the Company directly and not through a broker, depository company or other intermediary. Registered shareholders experiencing a delay in receiving the Meeting Materials can call AGM Connect at 416-222-4202 or toll-free at 1-855-839-3715 to request their individual 12-digit control number and further instructions on how to vote.

Registered shareholders are strongly encouraged to vote via internet or telephone at:

Internet: www.agmcvote.com
Telephone: [phone]

Alternatively, registered shareholders may submit their votes by completing, signing and dating the form of proxy available through the above-mentioned websites and sending it to AGM Connect at [e-mail]. Completed and signed proxies must be received by AGM Connect by 10:00 a.m. (Toronto time) on November 14, 2025.

How Non-Registered Shareholders Can Vote

Non-registered shareholders are shareholders who hold their shares through a broker, depository company or other intermediary. There are two types of non-registered shareholders: (i) those who do not object to their identity being made known to the issuers of securities which they own ("NOBOs") and (ii) those who object to their identity being made known to the issuers of securities which they own ("OBOs").