Change in Substantial Holding for Novonix Limited

Novonix Limited, a foreign private issuer, filed a Form 6-K with the SEC reporting a change in substantial holding. The filing, dated October 20, 2025, includes an ASX Announcement (Exhibit 99.1) detailing the change in interests of substantial holder YA II PN, Ltd. The previous notice was given on October 16, 2025. The total number of votes attached to all voting shares in the company that YA II PN, Ltd. had a relevant interest in decreased from 94,360,338 (11.23% voting power) to 77,347,337 (9.21% voting power). This change occurred due to the disposal of fully paid ordinary shares on October 16 and 17, 2025. The filing provides detailed information on the nature of the changes, the consideration given, and the present relevant interests of the substantial holder.