Intimation of closure of Trading Window for the purpose of Declaration of Financial result for the half year ended September 30, 2026

Date: September 25, 2026 The Secretary, Listing Department Bombay Stock Exchange Ltd Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai – 400 001, MH, IN. Sub: Intimation of closure of Trading Window under Insider Trading Regulation Reference: Security ID: KARBON / Security Code: 544511 / ISIN: INE0V8A01016 Dear Sir/Madam, Pursuant to the provisions of the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, as amended (“SEBI PIT Regulations”), we hereby inform you that the trading window for dealing in the equity shares of the Company shall remain closed from Thursday, October 1, 2026, until 48 hours after the date of declaration of unaudited Financial Results of the Company for the half year ended on September 30, 2026. Accordingly, Designated Persons, their Immediate Relatives, and the Connected Persons of the Company as defined under SEBI PIT Regulations, shall also be intimated not to trade in the securities of the Company during the aforesaid period of closure of trading window. The date of the Board Meeting to approve the financial results for the half year ended September 30, 2026, will be communicated separately. The intimation is also available on the website of the Company at www.karbonsteel.com. Kindly take the same on your record. Thanking You. Yours Faithfully, For Karbonsteel Engineering Limited Siddhi Parmar Company Secretary and Compliance Officer ACS 60563