The Exchange has received the disclosure under Regulation 29(1) of SEBI (Substantial Acquisition of Shares & Takeovers) Regulations, 2011 for Catalyst Trusteeship Ltd

CTL/SAST/26-27/02390 Date: 24September 2026 (1) National Stock Exchange of India Limited Exchange Plaza, C-1, Block G, Bandra Kurla Complex, Bandra (East), Mumbai,400051 (2) BSELimited Pheroze Jeejeebhoy Towers, Dalal Street, Mumbai, Maharashtra, 400001 (3) Orient Green Power Company Limited Bascon Futura SV, 4th Floor, No.10/1, Venkatanarayana Road, T. Nagar, Chennai, Tamil Nadu, India, 600017 Sub: Disclosure under Regulation 29(1) read with Regulation 29(4) of the Securities and Exchange Board of India (Substantial Acquisition of Shares and Takeovers) Regulations, 2011 (the SEBI SAST Regulations)in relation to pledge of equity shares of Orient Green Power Company Limited. Dear Sir , This letter sets out the disclosure being made by Catalyst Trusteeship Limited, in its capacity of debenture trustee for the benefit of the debenture holders, pursuant to Regulation 29(1) read with Regulation 29(4) of the SEBI SAST Regulations in respect of the extension/continuation of existing pledge over the equity shares of Orient Green Power Company Limited (Target Company) held by Janati Bio Power Private Limited(the original pledge was disclosed by us to the stock exchanges and the Target Company pursuant to the disclosure dated 3 October 2025). We request you to kindly take the above on record and disseminate the same. For Catalyst Trusteeship Limited Authorised Signatory Name: Deesha Srikkanth Designation: Senior Vice President Place: Mumbai Date: 24September2026 Disclosures under Regulation 29(1) of SEBI (Substantial Acquisition of Shares andTakeovers) Regulations, 2011 Part-A-Details of the Acquisition Name of the Target Company (TC) Orient Green Power Company Limited Name(s) of the acquirer and Persons Catalyst Trusteeship Limitedacting in its capacity as the Acting in Concert (PAC) with the acquirer debenture trusteeon behalf of the debenture holders. WhethertheacquirerbelongstoPromoter No. /Promoter group Name(s) of the Stock Exchange(s) where BSE Limited and the National Stock Exchange of India the shares of TC are Listed Limited. Details of the acquisition as follows: Number % w.r.t. total % w.r.t. total share/voting diluted capital wherever share/voting applicable(*) capital of the TC (**) Before the acquisition under consideration, holding of acquirer along with PACs of: a) Shares carrying voting rights - - - b) Shares in the nature of encumbrance 26,59,52,084 22.67% 22.67% (pledge/ lien/ non-disposal undertaking/ others) c) Voting rights (VR) otherwise than - - - by shares 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) e) Total (a+b+c+d) 26,59,52,084 22.67% 22.67% Details of acquisition a) Shares carrying voting rights - - - acquired b) VRs acquired otherwise than by - - - equity shares 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 d) Shares in the nature of encumbrance 26,59,52,084# 22.67% 22.67% (pledge/ lien/ non-disposal undertaking/ others) e) Total(a+b+c+/d) 26,59,52,084# 22.67% 22.67% After the acquisition, holding of acquirer along with PACs of: a) Shares carrying voting rights - - - b) VRs otherwise than by equity shares - - - 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) after acquisition d) Shares in the nature of encumbrance 26,59,52,084# 22.67% 22.67% (pledge/ lien/ non-disposal undertaking/ others) e) Total (a+b+c+d) 26,59,52,084# 22.67% 22.67% Mode of acquisition (e.g. open market / By way of pledge of equity shares of the Target public issue / rights issue / preferential Company in favour of Catalyst Trusteeship Limited allotment / inter-se transfer / encumbrance,etc.) Salient features of the securities acquired Extension/continuation of existing pledge over including time till redemption, ratio at 26,59,52,084 equity shares of the Target Company by which it can be converted into equity Janati Bio Power Private Limited in favour of Catalyst shares, etc. Trusteeship Limited acting in its capacity as the debenture trustee on behalf of the debenture holders. Date of acquisition of / date of receipt of Date of creation of pledge: 22 September 2026 intimation of allotment of shares / VR/ warrants/convertible securities/any other instrument that entitles the acquirer to receive shares in the TC. Equity share capital / total voting capital INR 11,73,03,16,690comprising 1,17,30,31,669equity of the TC before the said acquisition shares of INR 10each. Equity share capital/ total voting capital of INR 11,73,03,16,690comprising 1,17,30,31,669equity the TC after the said acquisition shares of INR 10each. Total diluted share/voting capital of the INR 11,73,03,16,690comprising 1,17,30,31,669equity TC after the said acquisition shares of INR 10each. #The pledge created over shares of the Target Company on 30 September 2025 (and disclosed to the stock exchanges and the Target Company pursuant to the disclosure dated 3 October 2025) is now extended to secure additional debt incurred pursuant to amended and restated debenture trust deed dated September 22, 2026. There are no additional shares being pledged. For Catalyst Trusteeship Limited Authorised Signatory Name: Deesha Srikkanth Designation: Senior Vice President Place: Mumbai Date: 24September2026