Intimation of Cyber Security Incident

Windlas Biotech Limited Reg. Off.: 40/1, Mohabewala Industrial Area Dehradun, Uttarakhand 248 110, India Tel.:+91-135-6608000-30, Fax:+91-135-6608199 Corp. Off.: 705-706, Vatika Professional Point, Sector-66, Golf Course Ext. Road, Gurgaon, Haryana 122 001, India Tel.:+91-124-2821030 CIN-L74899UR2001PLC033407 October 30, 2026 To To Listing / Compliance Department Listing / Compliance Department BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, C-1, Block G Dalal Street, Mumbai – 400 001 Bandra Kurla Complex Bandra (E), Mumbai – 400 051 BSE CODE: 543329 NSE SYMBOL: WINDLAS Dear Sir/ Madam, Subject: Disclosure under Regulation 30 of SEBI (LODR) Regulations 2015- Intimation of Cyber Security Incident Pursuant to Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, we hereby inform you that the Company has experienced a cyber security incident on October 30, 2026. We wish to submit that this does not have any material impact on the Company’s core business operations, financial performance or business continuity. A detailed assessment is currently underway and appropriate remedial and preventive measures are being implemented as required. This disclosure is being made as a matter of good governance. This is for your kind information and record. Thanking you, Yours faithfully, For Windlas Biotech Limited Ananta Narayan Panda Company Secretary & Compliance Officer www.windlas.com