The Exchange has received the disclosure under Regulation 29(2) of SEBI (Substantial Acquisition of Shares & Takeovers) Regulations, 2011 for General Atlantic Singapore RR Pte Ltd

Date: August 28, 2026 To, To, The Manager, The Manager, Listing Department, Listing Department, BSE Limited, National Stock Exchange of India Limited, Phiroze Jeejeebhoy Towers, Exchange Plaza, 5th floor Plot no. C/1, Block G, Dalal Street – Fort, Bandra Kurla Complex, Bandra (East), Mumbai 400 001, Mumbai - 400 051 Scrip Code: 544578 NSE Symbol: RUBICON ISIN - INE506V01022 Sub.: Disclosure under Regulation 29(2) of SEBI (Substantial Acquisition of Shares and Takeovers) Regulations, 2011 Dear Sir/Madam, With reference to the captioned subject, please find enclosed herewith disclosure under 29(2) of SEBI (Substantial Acquisition of Shares & Takeovers) Regulations, 2011, received from M/s General Atlantic Singapore RR Pte Ltd, Promoter of Rubicon Research Limited (“the Company”), for sale of 1,40,00,000 Equity Shares of the Company. You are requested to kindly acknowledge receipt of the same. Thanking you, Yours faithfully, For Rubicon Research Limited (Formerly known as Rubicon Research Private Limited) Deepashree Tanksale Company Secretary & Compliance Officer M. No. A28132 Rubicon Research Limited (formerly known as Rubicon Research Private Limited) | CIN: L73100MH1999PLC119744 Registered Office: Plot No. B-75, MedOne House, Road No. 33, Wagle Estate, Thane West, PIN – 400 604, Maharashtra, India �� +91-22-61414000 / 50414000 | ����� reachus@rubicon.co.in | � www.rubicon.co.in DISCLOSURES UNDER REGULATION 29(2) OF SEBI (SUBSTANTIAL ACQUISITION OF SHARES AND TAKEOVERS) REGULATIONS, 2011 Name of the Target Company (TC) Rubicon Research Limited Name(s) of the acquirer and Persons Acting in General Atlantic Singapore RR Pte. Ltd. Concert (PAC) with the acquirer Seller Whether the acquirer Seller belongs to Yes, the Seller is the Promoter of the TC Promoter/Promoter group Name(s) of the Stock Exchange(s) where the 1. National Stock Exchange of India Limited (NSE); shares of TC are Listed and 2. BSE Limited (BSE). Details of the acquisition / disposal as follows Number % w.r.t total % w.r.t total share/voting diluted capital share/voting wherever capital of the applicable (*) TC (**) Before the acquisition / disposal under a) 5,92,58,360 a) 35.79% a) 35.45% consideration, holding of: b) NA b) NA b) NA a) Shares carrying voting rights c) NA c) NA c) NA b) Share in the nature of encumbrance d) NA d) NA d) NA (pledge/lien/non-disposal undertaking/others) e) 5,92,58,360 e) 35.79% e) 35.45% c) Voting rights (VR) otherwise than by shares d) Warrants/convertible securities/any other instrument that entitles the acquirer Seller to receive shares carrying voting rights in the TC (specify holding in each category) e) Total (a+b+c+d) Details of acquisition / sale: a) 1,40,00,000 a) 8.45% a) 8.37% a) Shares carrying voting rights b) NA b) NA b) NA acquired/sold c) NA c) NA c) NA b) VRs acquired/sold otherwise than by d) NA d) NA d) NA shares e) 1,40,00,000 e) 8.45% e) 8.37% c) Warrants/convertible securities/any other instrument that entitles the acquirer to receive shares carrying voting rights in the TC (specify holding in each category) acquired/sold d) Shares encumbered/invoked/released by the acquirer Seller e) Total (a+b+c+/-d) After the acquisition/sale, holding of: a) 4,52,58,360 a) 27.34% a) 27.07% a) Shares carrying voting rights b) NA b) NA b) NA b) Shares encumbered with the acquirer c) NA c) NA c) NA Seller d) NA d) NA d) NA c) VRs otherwise than by shares e) 4,52,58,360 e) 27.34% e) 27.07% d) Warrants/convertible securities/any other instrument that entitles the acquirer to receive shares carrying voting rights in the TC (specify holding in each category) after acquisition / disposal e) Total (a+b+c+d) Mode of acquisition / sale (e.g. open market / On market sale off-market / public issue / rights issue / preferential allotment / inter-se transfer etc). Date of acquisition / sale of shares / VR or date 25 August 2026 and 26 August 20261 of receipt of intimation of allotment of shares, whichever is applicable Equity share capital / total voting capital of the INR 16,55,31,908 TC before the said acquisition / sale Equity share capital / total voting capital of the INR 16,55,31,908 TC after the said acquisition / sale Total diluted share/voting capital of the TC INR 16,71,56,286 after the said acquisition / sale (*) Total share capital/ voting capital to be taken as per the latest filing done by the company to the Stock Exchange under Clause 35 of the listing Agreement. (**) Diluted share/voting capital means the total number of shares in the TC assuming full conversion of the outstanding convertible securities/warrants into equity shares of the TC. Signature of the acquirer / seller / Authorised Signatory Date: 26 August 2026 Name: Ong Yu Huat Director 1 1,46,927 equity shares sold on 25 August 2026 and 1,38,53,073 equity shares sold on 26 August 2026.