PREMIER1 LITHIUM LIMITED — Proxy Solicitation & Information Statement 2025

Oct 16, 2025

Dear Shareholder

Annual General Meeting – Notice & Proxy Form

Premier1 Lithium Limited ( ASX: PLC ) (“ Premier1 ” or the “ Company ”) invites you to attend the Annual General Meeting ( “Meeting” ) of shareholders to be held at the offices of Consilium Corporate, Level 2, 22 Mount Street, Perth, Western Australia on Wednesday 19 November 2025, commencing at 9.30am AWST.

In accordance with Part 1.2AA of the Corporations Act, the Company will not be dispatching physical copies of the Notice of Meeting (“ Notice” ). Instead a copy of the Notice will be available to view online and download from the Company’s website at https://premier1lithium.com.au/.

Shareholders will not be sent a hard copy of the Notice unless Shareholders have already notified the Company that they wish to receive documents such as the Notice in hard copy. If you have any difficulty in obtaining a copy of the Notice, please contact the Company on info@premier1lithium.com.au.

Conversely, shareholders who receive their communications electronically will, as they have on previous occasions, receive an email from the Company’s share registry, Computershare, with links directing them to the Notice and the online voting portal.

The Company further advises that voting on all resolutions will be conducted by a poll and encourages those shareholders who cannot attend the Meeting to lodge their proxy forms no later than 48 hours before the meeting. Any proxy voting instructions received after that time will not be valid for the Meeting.

This announcement was authorised for release by the Joint Company Secretary, Simon Acomb.

For further information please contact:

Simon Acomb

Joint Company Secretary T: +61 8 6188 8181 E: info@premier1lithium.com.au