Trading Window Closure for the purpose of Q2FY2027 financial results

DIAMOND POWER INFRASTRUCTURE LIMITED September 28, 2026 Corporate Relations Department Listing Department BSE Limited National Stock Exchange of India Limited 2nd Floor, P.J. Towers Exchange Plaza, Plot No. C/1, G- Block, Dalal Street, Bandra Kurla Complex, Bandra (E), Mumbai – 400 001 Mumbai – 400 051 Scrip Code: 522163 NSE: DIACABS Sub: Intimation of Closure of Trading window Re: ISIN-INE989C01038 Dear Sir/Madam, Pursuant to the SEBI (Prohibition of Insider Trading) Regulations, 2015, as amended, we would like to inform you that the Trading Window for dealing in the Securities of the Company shall remain closed for all Insiders including Directors / Designated Persons / Connected Persons covered under the Code of Conduct of the Company adopted under SEBI (Prohibition of Insider Trading) Regulations, 2015, as amended, from Thursday, October 1, 2026, till completion of 48 hours after the declaration of Unaudited Financial Results of the Company for the quarter half year ending September 30, 2026 and the trading window shall re-open thereafter. The date of the Board Meeting for consideration and approval of the Unaudited Financial Results for the quarter ending September 30, 2026, shall be intimated to the Stock Exchanges separately and will also be made available on the website of the Company. Accordingly, all Directors / Designated Persons / Connected Persons under the Code have been advised not to trade in the securities of the Company during the aforesaid period of closure of Trading Window. Thanking you, Yours sincerely, For Diamond Power Infrastructure Limited Jayesh Patel Company Secretary ICSI M. No.: A14898 Regd. Office & Factory: Vadadala, Phase – II Savli, Vadodara, Gujarat, India-391520 CIN: L31300GJ1992PLC018198 Email: cs@dicabs.com, Website: www.dicabs.com Tel No.- 02667-251354/251516 Fax No.-02267-251202