Please find attached intimation regarding closure of trading window for dealing in securities of the Company in terms of SEBI (Prohibition of Insider Trading) Regulations, as amended

Date 28/09/2026 BSE Limited Corporate Relationship Department P.J. Towers, Dalal Street, Mumbai – 400001. Scrip Code: 514330/Scrip ID: ONEGLOBAL Subject: Closure of Trading Window for dealing in securities of the Company in terms of the SEBI (Prohibition of Insider Trading) Regulations, 2015, as amended Dear Sir/Madam, In terms of the provisions of the Insider Trading Regulation and the Company’s Code, the trading window for dealing in the securities of the Company shall remain closed for designated persons and their immediate relatives from 1st October, 2026 till 48 hours after the date of Board Meeting wherein, inter- alia, the approval of the Un-Audited financials results of the Company for the quarter and half-year ended 30th September, 2026, would be considered by the Board. The date of the Board meeting to consider and approve the Un-Audited financials results of the Company for the quarter and half year ended 30th September, 2026 shall be intimated in due course. Accordingly, all Designated Persons and their immediate relatives are advised to not involve in any transactions of dealing/ trading in the securities of the Company when the trading window is closed. This is for your information and records. Thanking you Yours faithfully, For ONE GLOBAL SERVICE PROVIDER LIMITED (Formerly known as Overseas Synthetics Limited) Sanjay Upadhyay Managing Director DIN: 07497306 ONE GLOBAL SERVICE PROVIDER LIMITED (Formerly known as Overseas Synthetics Limited) CIN : L74110MH1992PLC367633 Telephone : 8657527323 Website : www.1gsp.in E-mail : 1connect@1gsp.in Registered Address : 6th Floor, 601 E Wing, Trade Link Building, B & C Block, Senapati Bapat Marg, Kamla Mill Compound, Lower Parel (W) Mumbai 400013