Update on Litigations of Nagaur Mukundgarh Highways Private Limited, a subsidiary of the Company.

18th August 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: Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“Listing Regulations”) - Update on litigations. Dear Sir, In accordance with submissions of quarterly ‘Integrated Filing – Governance’ regarding disclosure of continuing event or information (i.e. ongoing litigations) of the Company and its subsidiaries, and its relevant developments pursuant to Regulation 30 and Part B of Para A of Schedule III of the Listing Regulations read with SEBI Master Circular No. HO/49/14/14(7)2025-CFD- POD2/I/3762/2026 dated 30th January 2026, we hereby submit the development in one of the ongoing litigations, in the prescribed format: The details of any change in the status and/ or Nagaur Mukundgarh Highways Private Limited a any development in relation to such subsidiary of the Company had filed writ proceedings; petitions before the Hon’ble High Court of Judicature for Rajasthan at Jodhpur, inter alia, challenging the applicability of CBIC Circular No. 150/06/2021-GST dated June 17, 2021 and levy of GST on annuity payments received under its concession agreement(s). The Hon’ble High Court, vide judgment dated August 17, 2026, received by the Company on August 18, 2026, has dismissed the writ petitions. The Company is evaluating the judgment and appropriate legal remedies available in consultation with its legal advisors. The aggregate amount involved in the aforesaid litigation is approximately Rs. 69.79 crore. 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; In the event of settlement of the proceedings, Not Applicable 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. This is for your information and record. Yours sincerely, For G R Infraprojects Limited Sudhir Mutha Company Secretary ICSI Membership No. ACS18857