The Company and its wholly owned material subsidiary RHI Magnesita India Refractories Limited have received letter today from its statutory auditors.

RHI MAGNESITA INDIA LTD. 19th & 20th Floor, DLF Square, M-Block, Phase II, Jacaranda Marg, DLF City, Gurugram, Haryana 122002 T +91 124 4299000 E corporate.india@rhimagnesita.com www.rhimagnesitaindia.com 9 August 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, Plot No. C/1, G Block, Bandra Kurla Complex, Dalal Street Bandra (East) Mumbai – 400 001, India Mumbai – 400 051, India BSE Scrip Code: 534076 NSE Symbol: RHIM Total number of pages including covering: 1 Sub: Disclosure under Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/ Ma’am, Pursuant to Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“Listing Regulations”), we wish to inform you that the Company and its Wholly-Owned material subsidiary, RHI Magnesita India Refractories Limited (“RHIMIRL”) have received letters today i.e. 9 August 2026 from its statutory auditors Price Waterhouse Chartered Accountant LLP intending to resign as statutory auditor of the Company and RHIMIRL on 14 August 2026. Detailed disclosures as required under Listing Regulations and circulars made there under will be submitted in due timelines once the Company receive the signed resignation letters from Statutory Auditor. This intimation is also being uploaded on the Company’s website i.e. https://www.rhimagnesitaindia.com/ . The Exchange is requested to take the same on record. You are requested to kindly take note of above and oblige. Yours Faithfully, For RHI Magnesita India Limited Sanjay Kumar Company Secretary (ICSI Membership No. -17021) Registered Office: Unit No.705, 7th Floor, Lodha Supremus, Kanjurmarg Village Road, Kanjurmarg (East), Mumbai-400042, T +91 22 49851200 CIN: L28113MH2010PLC312871