Certificate under Regulation 74(5) of SEBI (DP) Regulations, 2018 for the Quarter ended September 30, 2026, is enclosed herewith.

October 08, 2026 BSE Limited Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai – 400 001 Scrip Code – 544205 Sub: Certificate in terms of regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018 Dear Sir / Madam, We refer to Regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018 and enclosed herewith the Certificate received from MUFG Intime India Private Limited, Registrar and Share Transfer Agent of the Company for the quarter ended September 30, 2026. We request you to kindly take the same on record. Thanking you, Yours faithfully, For National Peroxide Limited (Formerly known as NPL Chemicals Limited) Akshay Satasiya Company Secretary Encl: as above Cc: National Securities Depository Limited Trade World, 4th Floor, Kamala Mills Compound, Senapati Bapat Marg, Lower Parel, Mumbai - 400 013. Email address: info@nsdl.com Cc: Central Depository Services (India) Limited Marathon Futurex, A-Wing, 25th Floor, NM Joshi Marg, Lower Parel, Mumbai - 400 013. Email address: helpdesk@cdslindia.com MUFG MUFG Intime India Private Limited (Formerly Link Intime India Private Limited) CIN: U67190MH1999PTC118368 Registered Address: C-101, Embassy 247, L.B.S. Marg, Vikhroli (West), Mumbai - 400083. Tel: +91 22 4918 6000 www.in.mpms.mufg.com Date : 03-10-2026 The Compliance Officer/ Company Secretary NATIONAL PEROXIDE LIMITED NEVILLE HOUSE J N HEREDIA ROAD BALLARD ESTATE MUMBAI MUMBAI PINCODE : 400001 Sub : Confirmation Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018. Dear Sir/Madam, In reference to the above captioned regulation, we hereby confirm that the securities received from the depository participants for dematerialisation during the quarter ended 30th September 2026, were confirmed (accepted/rejected) to the depositories by us and that securities comprised in the said certificates have been listed on the stock exchanges where the earlier issued securities are listed. We hereby also confirm that the security certificates received for dematerialisation have been confirmed/rejected and the security certificates received were mutilated and cancelled after due verification by the depository participant and the name of the depositories have been substituted in the register of members as the registered owner within the prescribed timelines. We request you to kindly take note of the above in your records. Thanking you, Yours faithfully, For MUFG Intime India Private Limited (Formerly Link Intime India Private Limited) Ashok Shetty Sr. Vice President-Corporate Registry MUFG Intime India Private Limited A part of MUFG Corporate Markets, a division of MUFG Pension & Market Services