Resignation

26th June 2026 BSE Limited 25th Floor, Phiroze Jeejeebhoy Towers Dalal Street, Fort Stock Code: 513375 Mumbai 400 001 National Stock Exchange of India Ltd. Exchange Plaza, 5th Floor Plot No. C/1, G Block Bandra-Kurla Complex, Bandra (E) Stock Code: CARBORUNIV Mumbai 400 051 Dear Sir/Madam, Sub: Stepping down of Mr. Ajit Kolhe, Head- Information Technology, Senior Management We wish to inform that Mr. Ajit Kolhe, Head- Information Technology who is part of the Senior Management in the Company, would be stepping down today to pursue career prospects outside the Company. A copy of his resignation letter is enclosed. The requisite details with respect to the stepping down of Mr. Ajit Kolhe under Regulation 30 read with Para A (7) of Part A of Schedule III of the Listing Regulations and SEBI Master Circular dated 30th January 2026 are provided in Annexure to this letter. Kindly take the above information on record. Thanking you. Yours faithfully, For Carborundum Universal Limited Rekha Surendhiran Company Secretary Annexure A Details with respect to Change in directors, key managerial personnel (Managing Director, Chief Executive Officer, Chief Financial Officer, Company Secretary etc.), senior management, Auditor and Compliance Officer under Regulation 30(6) read with Para A (7) of Part A of Schedule III of the Listing Regulations and SEBI Master Circular dated 30th January 2026: Particulars a. reason for change viz. appointment, re- Stepping down as Head- Information appointment, resignation, removal, death Technology for career prospects outside or otherwise; the Company. b. date of appointment/re- Effective close of business hours on 26th appointment/cessation (as applicable) & June 2026 term of appointment/re-appointment c. brief profile (in case of appointment); Not applicable d. disclosure of relationships between Not applicable directors (in case of appointment of a director). e. Information as required pursuant to BSE Not applicable Circular with ref. no. LIST/COMP/14/2018- 19 and the National Stock Exchange of India Limited Circular with ref. no. NSE/CML/2018/ 24, both dated 20 June 2018 26th March 2026 Mr. Sridharan Rangarajan Managing Director Carborundum Universal Limited 234, Dare House, NSC Bose Road, Parrys, Chennai-600001 Dear Sir, I wish to step down from the services of the Company as Head- Information Technology to pursue my career opportunities outside the Company. I convey my sincere thanks for your support and guidance during my tenure. Thanking you, Yours sincerely Ajit Kolhe