Endeavour Mining PLC — Proxy Solicitation & Information Statement 2023

Mar 3, 2023

March 03, 2023

Computershare

510 Burrard St, 3rd Floor

Vancouver BC, V6C 3B9

www.computershare.com

To: All Canadian Securities Regulatory Authorities

Subject: ENDEAVOUR MINING PLC

Dear Sir/Madam:

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

Meeting Type : Annual General Meeting
Record Date for Notice of Meeting : March 30, 2023
Record Date for Voting (if applicable) : March 30, 2023
Beneficial Ownership Determination Date : March 30, 2023
Meeting Date : May 11, 2023
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
NAA for Registered Holders No

Voting Security Details:

Description	CUSIP Number	ISIN
ORDINARY SHARES	G3042J105	GB00BL6K5J42

Sincerely,

Computershare

Agent for ENDEAVOUR MINING PLC