Resignation

September 23, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers, Exchange Plaza, C-1, Block G, Dalal Street, Bandra-Kurla Complex, Mumbai 400 001 Bandra (East), Mumbai 400 051 Scrip Code: 544184 Symbol: BOROSCI Dear Sirs, Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”) This is to inform that Mr. Kailash Motwani, Head - Operations, Pune & Goel Scientific Glass Works Limited (material subsidiary of the Company), designated as Senior Management Personnel of the Company, has tendered his resignation due to personal reasons, effective today i.e. September 23, 2026. The details, as required under Regulation 30 of the SEBI Listing Regulations, read with the SEBI Master Circular updated as on January 30, 2026, are provided in Annexure-A. A copy of his resignation letter is enclosed as Annexure-B. You are requested to take the same on record. Yours faithfully, For Borosil Scientific Limited Ramavtar Sharma Company Secretary & Compliance Officer Encl : As above Annexure-A Particulars Details Mr. Kailash Motwani, Head - Operations, Pune & Goel Scientific Glass Works Limited Reason for change viz. (material subsidiary of the Company), resignation designated as Senior Management Personnel of the Company, has tendered his resignation. 2. Date of cessation September 23, 2026 3. Brief Profile Not Applicable Disclosure of relationships 4. Not Applicable between directors Annexure - B