This is to inform you that a meeting of the Board of Directors of the Company is scheduled to be held on 21 September 2026 inter-alia to consider and approve the proposed Scheme of Arrangement between Dalmia Bharat Refractories Limited ("DBRL") and Himadri Speciality Chemical Ltd and their respective shareholders and creditors pursuant to Section 230 to 232 of the Companies Act, 2013 for demerger of Tyre Business of DBRL

Ref. No: HSCL / Stock-Ex/2026-27/58 Date: 18/09/2026 E-mail: monika@himadri.com Ref: Listing Code: 500184 Ref: Listing Code: HSCL BSE Limited National Stock Exchange of India Ltd Department of Corporate Services Exchange Plaza, C-1, Block-G P. J. Towers, 25th Floor, Bandra Kurla Complex, Dalal Street, Bandra (E) Mumbai- 400 001 Mumbai- 400 051 Sub: Notice of Board Meeting Dear Sir/Madam, This is to inform you that a meeting of the Board of Directors (“Board”) of Himadri Speciality Chemical Ltd (“Company’) is scheduled to be held on Monday, 21 September 2026 inter-alia to consider and approve the proposed Scheme of Arrangement between Dalmia Bharat Refractories Limited (“DBRL”) and Himadri Speciality Chemical Ltd (“HSCL” or “Company”) and their respective shareholders and creditors pursuant to Section 230 to 232 read with other applicable provisions of the Companies Act, 2013 and the rules framed thereunder for demerger of the Tyre Business of DBRL. Further, pursuant to the Code of Conduct to Regulate, Monitor and Report Trading by Designated Persons and their immediate relatives under SEBI (Prohibition of Insider Trading) Regulations, 2015, the trading window for dealing in securities of the Company shall remain closed from the intimation of this notice up to 48 hours from the time of disclosure of outcome of the above meeting to the Stock Exchanges. This is for your information and record. Thanking you, Yours faithfully, For Himadri Speciality Chemical Ltd Monika Saraswat Company Secretary & Compliance Officer ACS: 29322