Update of Show Cause Notice from GST Department.

25th September 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, Plot No. C-1 Dalal Street, Fort G Block, Bandra-Kurla Complex, Bandra(E) Mumbai – 400001 Mumbai -400051 Scrip Code: 543317 Symbol: GRINFRA Subject: Intimation under Regulation 30 of Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“Listing Regulations”) – Update on Receipt of Show Cause Notice from GST Department. Dear Sir, In continuation to our intimation dated 26th August 2026, wherein the Company has informed the stock exchanges regarding the receipt of show cause notice (DRC-01) from “Office of the Joint Commissioner of State Tax, Ratlam Division, Indore, Madhya Pradesh”, under Section 74 of the CGST Act, 2017 & MPGST Act, 2017, we would like to inform that the Company has filed a writ petition before the Hon’ble High Court of Madhya Pradesh, Indore, challenging the said order. The brief details as required under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”) read with SEBI Master Circular dated January 30, 2026, are enclosed herewith as an “Annexure-A”. You are kindly requested to take the same on record. Yours sincerely, For G R Infraprojects Limited Sudhir Mutha Company Secretary ICSI Membership No. ACS18857 Encl: As Above ANNEXURE-A Disclosure of Material Events or Information pursuant to Regulation 30 of Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, read with the SEBI Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated 30th January 2026. S.No. Particulars Description 1 the details of any change in the status The Company has filed a writ petition before and / or any development in relation Hon’ble High Court of Madhya Pradesh, Indore to such proceedings; against the show cause notice dated 25th August 2026 from Office of the Joint Commissioner of State Tax, Ratlam Division, Indore, Madhya Pradesh. 2 in the case of litigation against key Not Applicable management personnel or its promoter or ultimate person in control, regularly provide details of any change in the status and / or any development in relation to such proceedings; 3 in the event of settlement of the Not Applicable proceedings, details of such settlement including - terms of the settlement, compensation/penalty paid (if any) and impact of such settlement on the financial position of the listed entity.