The Exchange has received the Disclosures of reasons for encumbrance by promoter of listed companies under Reg. 31(1) read with Regulation 28(3) of SEBI (SAST) Regulations, 2011 on November 10, 2026 for Indo Borax & Chemicals Ltd

INDO BORAX & CHEMICALS LIMITED CIN: L24100MH1980PLC023177 Regd. Office: 506, 5th Floor, Tulsiani Chambers, Free Press Journal Marg, Nariman Point, Mumbai-400021, Tel: 022-35218591, email: info@indoborax.com Corp. Office : 201-A, Vedanta, 779A, Makwana Road, Marol Village, Andheri (E), Mumbai:400 059 Date: November 10, 2026 To, To, To, BSE Limited, National Stock Exchange of Kronox Lab Sciences Corporate Relationship India Limited, Limited Department, Listing Department, Block No. 353, Village Phiroze Jeejeebhoy Exchange Plaza, Ekalbara, Vadodara – Towers, Bandra - Kurla Complex, 391440, Gujarat Dalal Street, Fort, Bandra (East), Mumbai - 400 Mumbai – 400 001 051 Scrip Code: 544187 Scrip Symbol: KRONOX Subject: Revised disclosure under Regulation 31 (1) of the Securities and Exchange Board of India (Substantial Acquisition of Shares and Takeovers) Regulations, 2011 ("Takeover Regulations") Dear Sir/Madam, With continuation to our email dated 5th November, 2026, and as desired by you please find the revised disclosure pursuant to Regulation 31(1) Securities and Exchange Board of India (Substantial Acquisition of Shares and Takeovers) Regulations, 2011, mentioning the name of the lender and trustee. We request you to take the same on record. Thanking you. Yours faithfully, For Indo Borax & Chemicals Limited Pravin Chavan Company Secretary & Compliance Officer Membership No.: A16857 Encl.: As above ANNEXURE – I Disclosure by the Promoter(s) to the Stock Exchanges and to the Target Company for encumbrance of shares, in terms of Regulation 31(1) of the SEBI (Substantial Acquisition of Shares and Takeovers) Regulations, 2011 Particulars Details Name of the Target Company (TC) Kronox Lab Sciences Limited Stock Exchanges where shares of the Target Company are listed BSE Limited and National Stock Exchange of India Limited Date of reporting November 05, 2026 Promoter/PAC on whose shares encumbrance has been Indo Borax & Chemicals Limited created/released/invoked Details of the creation of encumbrance Name of Post-event holding of Promoter holding Promoter holding encumbered shares Promoter in Target Company already encumbered Details of events pertaining to encumbrance (3) creation [(2) +(3)] / / PACs (1) (2) release [(2)-(3)] / with invocation [(1)-(3)]] him* Date of Type of Name of the % of Type of % of total creation/ encumbrance entity in % of total event Number % of share release/ (pledge /lien/ Reasons for whose favor total Number share Number (creation / of shares share Number capital invocation of non-disposal encumbrance** shares share capital release / in event capital encumbrance undertaking/ encumbered capital invocation) others) Indo 2,38,44,000 64.26% Nil Nil Creation November 03, Pledge Pledge has been 51,94,560 14% CTL 51,94,560 14% Borax & 2026 created as security Trusteeship Chemicals in connection with Limited Limited the term loan Lender facility of Poonawalla approximately Rs. Fincorp Ltd 2,25,00,00,000 availed by the Company from Poonawalla Fincorp Ltd (**) The names of all the promoters, their shareholding in the target company and their pledged shareholding as on the reporting date should appear in the table irrespective of whether they are reporting on the date of event or not. (*) Total share 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. Annexure - II Disclosure of reasons for encumbrance (In addition to Annexure - I prescribed by way of circular dated February 16, 2023) Disclosure particulars Details Name of listed company Kronox Lab Sciences Limited Name of Recognised Stock Exchanges where the shares BSE Limited and National Stock Exchange of India Limited of the company are listed Name of promoter(s) / PACs whose shares have been Indo Borax & Chemicals Limited encumbered No. of Shares: 2,38,44,000 Total promoter shareholding in the listed company % of total share capital: 64.26% Encumbered shares as a % of promoter shareholding 21.79% Whether encumbered share is 50% or more of promoter shareholding Whether encumbered share is 20% or more of total share capital Details of all the existing events / agreements pertaining to encumbrance Encumbrance (Date of creation: November Particulars 03, 2026) Type of encumbrance (pledge, lien, negative lien, non-disposal undertaking, or any other Pledge covenant, transaction, condition or arrangement in the nature of encumbrance) No. of shares: 51,94,560 No. and % of shares encumbered % of total share capital: 14% Specific details about the Name of the entity in whose favour shares are encumbered CTL Trusteeship Limited Encumbrance (X) Whether entity X is a scheduled commercial bank, public No, financial institution, NBFC or housing finance company? If Nature of Business: Trusteeship services, No, provide nature of business of entity. including Security Trustee. Names of all other entities in the agreement Not Applicable Whether encumbrance relates to any debt instruments (e.g., debenture, commercial paper, certificate of deposit)? If yes, No provide details including credit rating. Security cover / Asset Value of shares on date of event/agreement (A): Rs. 1,03,52,75,808/- cover Amount involved (against which shares have been For loan of Rs. 2,25,00,00,000 : Pledge of encumbered) (B): 51,94,560 equity shares. Ratio of A / B: 0.46 (a) Personal use by promoters and PACs: No End use of money – (b) For benefit of listed company: Pledge has been created as security in connection with the term loan borrowed amount to be facility of approximately Rs. 2,25,00,00,000 availed by the Company towards financing the acquisition of utilised for what purpose? equity shares of Kronox Lab Sciences Limited. (c) Any other reason (please specify): NA For Indo Borax & Chemicals Limited Pravin Chavan Company Secretary & Compliance Officer Membership No.: A16857