Intimation of Closure of Trading Window for the quarter and half year ended September 30, 2026.

September 28, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers, Exchange Plaza, Bandra Kurla Complex, Dalal Street, Mumbai – 400 023 Bandra (East), Mumbai – 400051 Security Code : 532926 Symbol: JYOTHYLAB Subject: Closing of Trading Window for purchase/ sale of shares of the Company Dear Sir / Madam, This is to inform you that pursuant to Clause 5 of the Code of Conduct adopted by the Company for regulating, monitoring and reporting of trading by its designated persons and their immediate relatives, the trading window to deal in the Company’s shares is closed for designated persons from Thursday, October 1, 2026 till the end of forty eight hours of the date of making the financial results (Financial Results of the Company for the second quarter and half year ending September 30, 2026) public. This is for your information and record. Thanking you, Yours faithfully, For Jyothy Labs Limited Shreyas Trivedi Head – Legal & Company Secretary Jyothy Labs Limited CIN: L24240MH1992PLC128651 ‘Ujala House’, Ramkrishna Mandir Road, Kondivita, Andheri (East), Mumbai 400059. Tel: +91 022-6689 2800 | Fax: +91 022-6689 2805 info@jyothy.com | www.jyothylabs.com