Credit Rating

Date: June 29, 2026 Ref. No.: KDL/SE/020/2026-27 To, To, BSE Limited National Stock Exchange of India Limited Corporate Relationship Department Exchange Plaza, Plot No. C-1, Block G, 25th Floor, Phiroze Jeejeebhoy Towers Bandra Kurla Complex, Bandra (East) Dalal Street, Mumbai- 400001 Mumbai – 400051 Scrip Code: 543328 NSE Symbol: KRSNAA Dear Sir/Madam, Subject: Intimation under Regulation 30 of SEBI (LODR) Regulations, 2015 - Intimation of Credit Rating. Pursuant to Regulation 30 of SEBI (Listing Obligation and Disclosure Requirements) Regulations, 2015, we would like to inform you that ICRA Limited, has reaffirmed a long-term rating of ICRA A (Stable) (pronounced ICRA A) for INR 166.60 Crore and a short-term rating of ICRA A1 (pronounced ICRA A One) for INR 137.55 Crore Bank Loan Facilities. The Outlook on the long-term rating is Stable. The issuer rating letter and the detailed Rating rational by ICRA Limited is annexed herewith for your ready reference. The same is being made available on the website of the Company. You are requested to take the above information on your record. For Krsnaa Diagnostics Limited Sujoy Sudipta Bose Company Secretary and Compliance Officer ICRA Limited ICRA/Krsnaa Diagnostics Limited/29062026/1 Date: June 29, 2026 Mr. Chandra Prakash Singh Interim Chief Financial Officer Krsnaa Diagnostics Limited S.No.243, No. 6/6 CTS No.4519, Near Mayur Trade Center, Chinchwad, Pune- 411 019, Maharashtra, India Dear Sir, Re: ICRA's Credit Rating for below mentioned Instruments of Krsnaa Diagnostics Limited As per the Rating Agreement/Statement of Work executed with ICRA Limited, ICRA’s Rating Committee has taken the following rating actions for the mentioned instruments of your company. Rated Amount (Rs. Instrument Rating Action[1] Crore) Short-term - Non-fund based - Bank 137.55 [ICRA]A1 ; Reaffirmed/Assigned for enhanced amount guarantee [ICRA]A(Stable); Reaffirmed/Assigned for enhanced Long-term - Fund-based - Term loan 62.15 amount Long-term - Fund-based - Cash credit 104.45 [ICRA]A(Stable); Reaffirmed Total 304.15 The aforesaid rating(s) will become due for surveillance within one year from the date of rating communication letter. However, ICRA reserves the right to review and/or, revise the above rating(s) at any time based on new information becoming available, or the required information not being available, or other circumstances that ICRA believes could have an impact on the rating(s). Therefore, request the lenders and investors to visit ICRA website at www.icra.in for latest rating(s) of the company. The rating(s) are specific to the terms and conditions of the instruments as indicated to us by you, and any change in the terms or size of the same would require a review of the rating(s) by us. In case there is any change in the terms and conditions or the size of the rated instrument, the same must be brought to our notice before the instrument is used by you. In the event such changes occur after the rating(s) have been assigned by us and their use has been confirmed by you, the rating(s) would be subject to our review, following which there could be a change in the rating(s) previously assigned. Notwithstanding the foregoing, any change in the over-all limit of the instrument from that specified in [1]Complete definitions of the ratings assigned are available at www.icra.in. Sensitivity Label : Restricted this letter, would constitute an enhancement that would not be covered by or under the said Rating Agreement. The rating(s) assigned must be understood solely as an opinion and should not be treated, or cause to be treated, as recommendation to buy, sell, or hold the rated instrument availed/issued by your company. You are also requested to forthwith inform us about any default or delay in repayment of interest or principal amount of the instrument rated, as above, or any other debt instruments/ borrowing and keep us informed of any other developments which may have a direct or indirect impact on the debt servicing capability of the company including any proposal for re-schedulement or postponement of the repayment programmes of the dues/ debts of the company with any lender(s) / investor(s), or occurrence of any significant development that could impact the ability of the company to raise funds such as restriction imposed by any authority from raising funds through issuance of debt securities through electronic bidding system. Further, you are requested to inform us immediately as and when the borrowing limit for the instrument rated, as above, or as prescribed by the regulatory authority(ies) is exceeded. We look forward to your communication and assure you of our best services. With kind regards Yours sincerely For ICRA Limited Anupama Reddy Vice President & Co-Group Head – Corporate Ratings anupama.reddy@icraindia.com Sensitivity Label : Restricted Annexure Details of Bank Limits Amount Rating Rating Assigned On Rated by ICRA (Rated on (Rs. crore) Long-Term Scale) HDFC Bank Limited – Term 29.34 Loan Yes Bank Limited – Term 18.50 Loan Kotak Mahindra Bank 14.31 Limited – Term Loan IndusInd Bank Limited – 64.45 Cash Credit [ICRA]A(Stable) June 23, 2026 HDFC Bank Limited – Cash 14.00 Credit HDFC Bank Limited – Cash 21.00 Credit / Working Capital Demand Loan Kotak Mahindra Bank 5.00 Limited – Demand Loan / Overdraft Total 166.60 Details of Bank Limits Amount Rating Rating Assigned On Rated by ICRA (Rated on (Rs. crore) Short-Term Scale) IndusInd Bank Limited – Bank Guarantee 102.55 [ICRA]A1 June 23, 2026 HDFC Bank Limited – Bank Guarantee 35.00 Total 137.55 Sensitivity Label : Restricted