Change in Substantial Holding for Novonix Limited

Novonix Limited, a foreign private issuer, filed a Form 6-K with the SEC on October 27, 2025, reporting a change in substantial holding. The filing 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 20, 2025, and the change occurred on October 22, 2025. YA II PN, Ltd. disposed of a total of 10,908,754 fully paid ordinary shares, reducing its voting power from 9.213% to 7.91%. The consideration for these disposals amounted to $11,242,318. The filing provides detailed information on the changes in relevant interests and the present relevant interests of YA II PN, Ltd. in Novonix Limited.