International Battery Metals Ltd — Proxy Solicitation & Information Statement 2025

Sep 29, 2025

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

Date: September 29, 2025

To: All Canadian Securities Regulatory Authorities

Subject: INTERNATIONAL BATTERY METALS LTD.

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 and Special Meeting
Record Date for Notice of Meeting: October 24, 2025
Record Date for Voting (if applicable): October 24, 2025
Beneficial Ownership Determination Date: October 24, 2025
Meeting Date: December 17, 2025
Meeting Location (if available): Texas, US
Issuer sending proxy related materials directly to NOBO: No
Issuer paying for delivery to OBO: No

Notice and Access (NAA) Requirements:

• NAA for Beneficial Holders: Yes
• Beneficial Holders Stratification Criteria: Not Applicable
• NAA for Registered Holders: Yes
• Registered Holders Stratification Criteria: Not Applicable

Voting Security Details:

Description	CUSIP Number	ISIN
COMMON	459121109	CA4591211095

Sincerely,

Computershare
Agent for INTERNATIONAL BATTERY METALS LTD.