Endeavour Mining PLC — Proxy Solicitation & Information Statement 2021

Jul 30, 2021

Computershare
510 Burrard St, 3rd Floor
Vancouver BC, V6C 3B9
www.computershare.com

Date: July 30, 2021

To: All Canadian Securities Regulatory Authorities

Subject: ENDEAVOUR MINING PLC (the "Issuer")

Dear Sir/Madam:

We advise of the following with respect to the upcoming Meetings of Security Holders for the subject Issuer:

Meeting Type : General Meeting
Record Date for Notice of Meeting : August 04, 2021
Record Date for Voting (if applicable) : August 04, 2021
Beneficial Ownership Determination Date : August 04, 2021
Meeting Date : September 09, 2021
Meeting Location (if available) : Hybrid Meeting
Issuer sending proxy related materials directly to NOBO: No
Issuer paying for delivery to OBO: Yes

Notice and Access (NAA) Requirements:

NAA for Beneficial Holders: No
Beneficial Holders Stratification Criteria: Not Applicable
NAA for Registered Holders: No

Voting Security Details:

Description	CUSIP Number	ISIN
ORDINARY SHARES	G3042J105	GB00BL6K5J42

Note from the Issuer:

The Issuer is planning to hold a General Meeting to seek shareholder approval for a reduction of capital. In the Issuer's prospectus dated 9 June 2021, it set out its intention to undertake a reduction of capital through a cancellation of share premium following admission of shares to listing in the UK. The Issuer now proposes to execute the reduction of capital through a different route. The effect of the revised reduction of capital would be the same as that originally planned, and it has the same goal of creating profits available to support the future payment of dividends (and any potential share repurchases) by the Issuer over the longer term. Further information will follow.

Sincerely,

Computershare

Agent for ENDEAVOUR MINING PLC