Appointment of Shri Megha Nidhi Dahal, IAS (Din No. 09767989) in place of Shri Hivare Nisarg Gautam as Chairman and Nominee Director as per Direction of Govt Of Assam

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 Date: 11.08.2026 Department of Corporate Services, Bombay Stock Exchange Limited, P.J. Towers, Dalal Street, Mumbai 400 001. Dear Sirs, Ref.: Scrip Code: 500192: PRAGBOS Sub: Corporate Announcement filed under Regulation 30 of SEBI (LODR) Regulations, 2015 – Intimation of Change in Chairman Respected Sir or Madam, Change of Chairman and Nominee Director – This is to inform you that pursuant to the direction of Govt. of Assam, vide their Notification no. ECF no. 780232/23 dated 16th July 2026, received on 10st August 2026, the appointment of Shri Megha Nidhi Dahal, IAS (Managing Director, AIDC) - (Din no. 09767989) in place of Shri Shri Hivare Nisarg Gautam as Chairman & Nominee Director w.e.f 10/08/2026. The other brief details of the Chairman will be shared once received from the Govt of Assam. This is for the information and updation. Kindly take the same on record. Thanking You Yours faithfully, For PRAG BOSIMI SYNTHETICS LTD. Madhu Dharewa Company Secretary 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 Brief Profile of newly appointed Director Shri Megha Nidhi Dalal Name of the Director Shri Megha Nidhi Dalal Date of Birth 02nd October 1968 Date of appointment w.e.f.10th August 2026 Qualification I.A.S Expertise in specific Shri Megha Nidhi Dahal is an IAS office functional area of 2015 batch. He is Managing Director of Assam Industrial Development Corporation Limited and Director in other two companies. He is currently Commissioner in Guwahati Municipal Corporation for the current period. IAS officer Megha Nidhi Dahal from Sikkim has also been appointed as the Transport Commissioner of Government of Assam. Dahal has held various significant positions throughout his career, contributing to public administration and governance. List of Outside Eight (8) Cos (Ltd, Private Limited, Directorships held Foundations) Chairman or members of the 2 Committee of the Board of Directors of other Companies* Number of shares in the None Company Inter se Relationship with other Not Any Directors & KMP REGISTERED OFFICE: HOUSE NO.19, AMBIKAGIRI NAGAR, MILAN PATH, R.G.BARUA ROAD, GUWAHATI-781024, INDIA.