Addendum to Public Announcement pursuant to Buyback of Equity Shares of the Company

November 9, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, Bandra- Kurla Complex Dalal Street, Mumbai 400 023 Bandra (E), Mumbai 400 051 BSE Code: 532926 Scrip Code: JYOTHYLAB Dear Sir/ Madam, Sub: Addendum to the Public Announcement for the Buyback of Equity Shares of Jyothy Labs Limited (“Company”) Ref: Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended (“Listing Regulations”). This has reference to our letter dated November 6, 2026 wherein the public announcement dated November 5, 2026 (“Public Announcement”) was published on November 6, 2026 in relation to the Buyback of not exceeding 68,37,210 (Sixty-Eight Lakhs Thirty- Seven Thousand Two Hundred and Ten) fully paid-up equity shares of the Company, having a face value of INR 1/- (Indian Rupee One only) (“Equity Shares”), at a price of ₹ 215 (Indian Rupees Two Hundred and Fifteen only) per Equity Share payable in cash for an aggregate amount not exceeding ₹147,00,00,150 (Indian Rupees One Hundred Forty-Seven Crore and One Hundred Fifty only), on a proportionate basis through the tender offer route, in accordance with the Companies Act, 2013, as amended, and rules made thereunder, and the Securities and Exchange Board of India (Buy-Back of Securities) Regulations, 2018, as amended (“Buyback Regulations”) and other applicable laws, was communicated. We further wish to inform you that pursuant to Regulation 5(via) of the Buyback Regulations, the Buyback Committee, at its meeting held on Monday, November 9, 2026 has approved the following: (i) Buyback Price has been increased from ₹ 215 (Indian Rupees Two Hundred and Fifteen only) per Equity Share to ₹ 240 (Indian Rupees Two Hundred and Forty only) per Equity Share; and (ii) Decrease of the maximum number of Equity Shares proposed to be bought back by the Company from 68,37,210 (Sixty-Eight Lakhs Thirty-Seven Thousand Two Hundred and Ten) Equity Shares to 61,25,000 (Sixty-One Lakhs Twenty-Five Thousand) Equity Shares, representing up to 1.67% of the total number of Equity Shares in the paid-up share capital of the Company. In this regard, an addendum to the Public Announcement (“Addendum”) will also be published in all editions of Financial Express (English), all editions of Jansatta (Hindi), and Mumbai 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 edition of Navshakti (Marathi), and will be made available on the website of the Company (https://www.jyothylabs.com/) ; on the website of Manager to the Buyback at (https://www.ey.com/en_in/services/strategy-transactions/merchant-banking-services) and on the website of the Registrar to the Buyback at (www.in.mpms.mufg.com) and is expected to be available on the website of SEBI (www.sebi.gov.in), and on the website of the Stock Exchanges i.e. www.bseindia.com and www.nseindia.com during the period of the Buyback. All capitalized terms used herein shall have the meaning ascribed to them in the Public Announcement. We request you to kindly take the above on record and disseminate the same to all the investors. 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