Resignation Letter of Senior Management Personnel.

(castrol castrol.co.in 4 November 2026 The BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers, Exchange Plaza, Bandra Kurla Complex, Dalal Street, Bandra East, Mumbai – 400 001 Mumbai – 400 051 Scrip Code: 500870 Scrip Symbol: CASTROLIND Dear Sir/Madam, Sub.: Intimation under Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 - Resignation of Senior Management Personnel of the Company Pursuant to the provisions of Regulation 30 read with sub-para 7C of Para A of Part A of Schedule III of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“Listing Regulations”), we inform you of the resignation of Mr. Jyoti Prakash as Vice President & Head – Supply Chain of the Company (Senior Management Personnel position) to pursue opportunities outside the organization. He will cease to hold office with effect from close of business hours of 14 January 2027. Please find enclosed the resignation letter of Mr. Jyoti Prakash. Kindly take the above information on your record. Thank you. Yours sincerely, For Castrol India Limited Hemangi Ghag Company Secretary & Compliance Officer Encl.: a/a Registered address: Castrol India Limited CIN: L23200MH1979PLC021359 Technopolis Knowledge Park, Mahakali Caves Road, Andheri (East), Mumbai – 400093 Tel: +91 22 7177 7111/ Fax: +91 22 6698 4101 Customer Service Toll Free No: 1800222100 / 18002098100 4 November 2026 Saugata Basuray Managing Director Castrol India Limited Technopolis Knowledge Park, Mahakali Caves Road, Chakala, Andheri (East), Mumbai - 400 093 Dear Saugata, Sub.: Resignation from the services of the Company I hereby tender my resignation as Vice President & Head - Supply Chain of Castrol India Limited to pursue opportunities outside the organization. I will continue in the role till 14 January 2027 (close of business hours) to facilitate management of change. It has been an incredibly fulfilling journey for me, and I am grateful to the organization and the management for their unwavering support throughout my tenure. Thank you, Yours sincerely, Jyoti Prakash Confidential