Please find attached Intimation regarding dispatch of letters to those shareholders whose email addresses are not registered with Company/ RTA / DPs

Date: 06/09/2026 BSE Limited Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai – 400 001 Scrip Code: 514330/Scrip ID: ONEGLOBAL Subject: Intimation Regulation 30 and 36 of Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Madam, This is to inform you that in accordance with Regulation 36(1)(b) of the Securities and Exchange Board of India (Listing Obligations & Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”), the Company has sent a letter to those Shareholders whose e-mail addresses are not registered with Company/Registrar & Transfer Agent/Depository Participants, providing the weblink of Company’s website from where the Notice and Annual Report for FY 2025-26 can be accessed. A copy of the letter is enclosed for your records. The same may please be taken on record and suitably disseminated to all concerned. Thanking you, Yours faithfully, For ONE GLOBAL SERVICE PROVIDER LIMITED (Formerly known as Overseas Synthetics Limited) Sanjay Lalbhadur Upadhaya Managing Director DIN: 07497305 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 INLAND LETTER CARD अंतद(cid:566)शीयप(cid:287)काड(cid:91) Name: Address: Sender’s Name and Address OPEN TEAR HERE OPEN TEAR HERE OPEN TEAR HERE OPEN TEAR HERE MCS Share Transfer Agent Limited Unit: One Global Service Provider Limited) 3B3, 3rd Floor, B-Wing, Gundecha Onclave Premises Co-op. Society Limited, Kherani Road, Saki Naka, Andheri (East), Mumbai-400 072 Tel Nos.: 022-28516021/ 6022/ 46049717 Email: helpdeskmum@mcsregistrars.com Website: https://www.mcsregistrars.com Folio Number / DP ID & Client ID: Date: 5th September, 2026 Dear Subject: Notice of 34th Annual General Meeting of the Members of One Global Service Provider Limited and Annual Report for FY 2025-26 We are pleased to inform you that the 34th Annual General Meeting (“AGM”) of One Global Service Provider Limited (“the Company”) is scheduled to be held on Tuesday, 29th September, 2026 at 02:00 P.M. (IST) through Video Conference facility/ Other-Audio Visual Means (“VC/OAVM”), in accordance with the applicable circulars issued by the Ministry of Corporate Affairs (“MCA”) and Securities and Exchange Board of India (“SEBI”). Pursuant to Regulation 34(1) and 36(1) of SEBI (Listing Obligations and Disclosure requirements), 2015, (“SEBI Listing Regulations”), electronic copies of the Notice of the AGM along with Annual Report for Financial Year 2025-26 was sent to all the Members whose e-mail addresses were registered with the Company/ RTA/ Depository Participant(s). We wish to inform you that on scrutiny of the Member’s database, we found that your e-mail address is not registered against your demat account/Folio number. On account of this, we are unable to send the Annual Report electronically to you. Hence, in accordance with Regulation 36(1)(b) of the SEBI Listing Regulations, this letter is sent by the Company to inform you that the Annual Report and AGM Notice can be access and download by using the following options: Weblink for 34th AGM Notice Weblink for Annual Report (2025-26) https://www.1gsp.in/reports https://www.1gsp.in/reports Alternatively, the Annual Report can also be accessed by scanning the QR Code provided below: The Annual Report of the Company is also available on the websites of National Securities Depository Limited (“NSDL”) at www.evoting.nsdl.com and the website of BSE Limited (“BSE”) at www.bseindia.com Key Details of AGM are as follows: Final Dividend for FY 2025-26 Rate of Dividend Re. 1/- per equity share Record Date Tuesday, 22nd September, 2026 Dividend payout date, if approved by the Members On or before Wednesday, 28th October, 2026 E-Voting Details Time and Date of AGM Tuesday, 29th September, 2026 at 02:00 P.M. Cut-off date for e-Voting Tuesday, 22nd September, 2026 E-voting start date and time Friday, 25th September, 2026 at 09:00 A.M. IST E-voting start date and time Monday, 28th September, 2026 at 05:00 P.M. IST For more details, please refer to the ‘Notes’ section to the Notice of AGM. We also remind you to kindly ensure that your KYC details are updated with the Company’s Registrar & Transfer Agent (RTA)/DPs to avoid any disruption in services. If you wish to update your email address and other KYC details, please approach your DP in case you hold shares in electronic form and for shareholders holding shares in physical form, please approach RTA of the Company at the below address: Name & Address Contact Details MCS Share Transfer Agent Limited Tel Nos.: 022-28516021/ 6022/ 46049717 (Unit: One Global Service Provider Limited) Any service request may be raised through: 3B3, 3rd Floor, B-Wing, Gundecha Onclave Premises Co- Email: helpdeskmum@mcsregistrars.com op. Society Limited, Kherani Road, Saki Naka, Andheri Website: https://www.mcsregistrars.com (East), Mumbai-400 072 In case of any queries, Members may send an email to the Company’s Registrar and Transfer Agent, MCS Share Transfer Agent Limited (“RTA”) at helpdeskmum@mcsregistrars.com or visit https://www.mcsregistrars.com and submit the Grievance form. Alternatively, Member may email the Company directly at 1connect@1gsp.in We request you to support our commitment to environmental protection by choosing to receive the Company’s communication through e-mail, and dividend in digital mode. Assuring you of our best services. Warm Regards, For One Global Service Provider Limited Sd/- Sanjay Upadhaya Managing Director ONE GLOBAL SERVICE PROVIDER 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, Kamala Mill Compound, Lower Parel (W) Delisle Road, Mumbai, Maharashtra - 400013