Cessation due to Sudden Demise We deeply regret to inform you about the sad and sudden demise of our Secretarial Auditor, [Late Mr. Ashok Patel, Proprietor of M/s. Ashok Patel and Associates, ....

CORPORATEOFFICE: R-79/83, LAXMI INSURANCE BUILDING, 5TH FLOOR, SIR P.M.ROAD, MUMBAI 400001. PHONE.: 22660300(5LINES)• FAX:22660298 EMAIL: secretarial@boimi.com WEBSITE: www.pragbosimi.com CIN NO.:L17124AS1987PLC002758 August 20, 2026 The Manager, Dept of Corp. Services, Bombay Stock Exchange Limited, P. J. Towers, Dalal Street, Mumbai‐ 400 001. Scrip No: 500192 Dear Sir/Madam, Sub: Intimation under Regulation 30 of SEBI (LODR) Regulations, 2015 — Casual Vacancy and Appointment of Secretarial Auditor Pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“Listing Regulations”) read with Part A of Schedule III of said Regulations, we would like to inform you that based on the recommendation of the Audit Committee, the Board of Directors of the Company at its meeting held on 20th August, 2026 interlia considered: 1. Cessation due to Demise We deeply regret to inform you about the sad and sudden demise of our Secretarial Auditor, [Late Mr. Ashok Patel, Proprietor of M/s. Ashok Patel and Associates, Practicing Company Secretaries Membership No.: F10977, COP No.: 15326), which occurred on 16th August 2026. Consequently, a casual vacancy has arisen in the office of the Secretarial Auditor of the Company. The contributions and professional guidance rendered by Late Mr. Ashok Patel during their association with the Company are deeply acknowledged and appreciated. 2. Filling of Casual Vacancy (Appointment of New Secretarial Auditor) The Board of Directors, based on Audit Committee recommendations, appointed Mrs. Gayatri Vaibhav Phatak of M/s. G.S. Bhide & Associates (Membership No.: A31886, COP No.: 11816) to fill the vacancy, effective from 20th August 2026 until the ensuing AGM and shall be eligible for re-appointment at the Annual General Meeting to be held in the year 2026. The same are also being made available on the Company's website www.pragbosimi.com The meeting of Board commenced at 5.30 PM and concluded at 05.50 PM. Kindly acknowledge the receipt of the same and take the same on your record. Thanking You Yours faithfully, For PRAG BOSIMI SYNTHETICS LIMITED Madhu P. Dharewa Company Secretary ACS 31733 REGISTERED OFFICE: HOUSE NO.19, AMBIKAGIRI NAGAR, MILAN PATH, R. G. BARUA ROAD, GUWAHATI-781024, INDIA CORPORATEOFFICE: R-79/83, LAXMI INSURANCE BUILDING, 5TH FLOOR, SIR P.M.ROAD, MUMBAI 400001. PHONE.: 22660300(5LINES)• FAX:22660298 EMAIL: secretarial@boimi.com WEBSITE: www.pragbosimi.com CIN NO.:L17124AS1987PLC002758 ANNEXURE I Particulars Details Reason for Change viz. appointment Appointment to fill the casual vacancy caused by the unfortunate demise of Mr Ashok Patel of M/s Ashok Patel and Associates. M/s G. S. Bhide and Associates, Company Secretaries in Practice, Certificate of Practice Number 11816 and having Peer Review Number 2016/2022, as Secretarial Auditors of the Company. Date of appointment and term of The Board at its meeting held on August 20, 2026, appointment approved the appointment of M/s G. S. Bhide and Associates as Secretarial Auditors of the Company, for five consecutive years commencing audit period from FY 2026-27 till FY 2030-2031, subject to approval of the shareholders at the ensuing AGM. Brief Profile (in case of appointment) M/s. G. S. Bhide and Associates is a Sole Proprietorship, Peer Reviewed Firm of Company Secretaries in Practice with over 10 years of experience in delivering comprehensive professional services across Corporate Laws, SEBI Regulations and FEMA Regulations. Their expertise includes conducting Secretarial Audits, Due Diligence Audits, Legal Due Diligence, Corporate Governance Audit and Compliance Audits. Disclosure of relationships between directors. Not Applicable. (ln case of Appointment of Director) REGISTERED OFFICE: HOUSE NO.19, AMBIKAGIRI NAGAR, MILAN PATH, R. G. BARUA ROAD, GUWAHATI-781024, INDIA