Resignation

Eris t Eris Lifesciences Limited EY Entrepreneur FROST & SULLIVAN Business today/YES bank of the year-2013 Best Practices-2013 Excellence Awards-2013 Date: 05 October 2026 To To BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza Dalal Street Bandra Kurla Complex Mumbai- 400001 Bandra (E) Mumbai-400051 Security Code: 540596 Symbol: ERIS SUBJECT: RESIGNATION OF EXECUTIVE DIRECTOR & CHIEF OPERATING OFFICER (COO) REF: INTIMATION DATED SEPTEMBER 11, 2026 Dear Sir/Madam, Pursuant to Regulation 30 read with Para A of Part A of Schedule III of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, and further to our intimation dated September 11, 2026, regarding the resignation of Mr. Krishnakumar Vaidyanathan, Executive Director and Chief Operating Officer (COO) of the Company, with effect from the close of business hours on September 30, 2026, we hereby enclose the resignation letter tendered by Mr. Krishnakumar Vaidyanathan for your information and records. Thanking You, For Eris Lifesciences Limited Milind Talegaonkar Company Secretary & Compliance Officer Membership No: A26493 Encl: As above Registered & Corporate Office: Shivarth Ambit, Plot No. 142/2, Ramdas Road, Off SBR, Near Swati Bungalows, Bodakdev, Ahmedabad — 380054 Phone: +91-79-69661000/1001 • Email: eris@erislifesciences.com • Web Site: www.eris.co.in • CIN: L24232GJ2007PLC049867 Date: 11 September 2026 The Board of Directors Eris Lifesciences Limited Ahmedabad Subject: Resignation from the Position of Executive Director & Chief Operating Officer (COO) I, Krishnakumar Vaidyanathan, hereby tender my resignation from the position of Executive Director & Chief Operating Officer ("COO") of Eris Lifesciences Limited ("Company"), with effect from the close of business hours on September 30, 2026, in order to pursue professional opportunities outside the Company. I would like to express my gratitude to the Directors of the Company for the support and cooperation extended during my tenure. I request you to kindly accept and take my resignation on records, waive the applicable notice period and complete the necessary formalities in this regard. Yours faithfully, Krishnakumar Vaidyanathan Accepted with waiver of notice period. For Eris Lifesciences Limited Milind Talegaonkar Company Secretary & Compliance officer ICSI Mem. No.: A26493