IRB Infrastructure Developers Limited has announced the closure of its trading window for dealing in the company's securities. This closure is in accordance with the Code of Conduct for Regulating, Monitoring and Reporting of Trading by Designated Persons and their Immediate Relatives. The trading window will be effective from January 1, 2026. It will reopen 48 hours after the announcement of the financial results for the quarter and nine months ended December 31, 2025. This measure is a standard procedure to prevent insider trading during sensitive financial reporting periods.