Castrol India Limited has been informed of a public announcement dated December 24, 2025, regarding an open offer for its equity shares. UBS Securities India Private Limited, on behalf of Motion JVCo Limited (the "Acquirer"), along with Stonepeak Motion Holdco Limited, Stonepeak Infrastructure Fund V Cayman (AIV I) LP, Stonepeak Infrastructure Fund V (Lux) (AIV I) SCSp, and CPP Investment Board Private Holdings (6) Inc. (collectively, "PACs") as persons acting in concert, has made this offer. The open offer is to acquire up to 25,71,71,820 equity shares, representing 26.00% of the company's equity share capital. The offer price is ₹194.04 per equity share. This open offer is triggered by an indirect acquisition of substantial shares, voting rights, and control over Castrol India Limited by the Acquirer, pursuant to a share purchase agreement (SPA) entered into between BP p.l.c. and the Acquirer on December 23, 2025. The Acquirer will indirectly acquire sole control over Castrol Limited, the promoter of Castrol India Limited, which holds 51.00% of the equity share capital. The total consideration for the open offer, assuming full acceptance, is up to ₹4,990.16 crore. The offer price will be enhanced by 10% per annum from December 23, 2025, to the date of the detailed public statement (DPS). The DPS will be published no later than 5 working days from the completion of the underlying transaction, subject to receipt of required statutory approvals. The Acquirer has confirmed adequate financial resources for the acquisition.