Intimation of Resignation of Company Secretary and Compliance Officer

BOSTON COMMERCE LIMITED (Formerly known as Boston Bio Systems Limited) Registered office: A.828, Sun West Bank, Ashram Road P.O, Ahmedabad, City Taluka, Gujarat, India, 380009 CIN: L62013GJ1995PLC025476; E-mail: bostonsystem@yahoo.com Website: www.bostonbio.in Date: 01.08.2026 BSE Limited P.J. Towers, Dalal Street, Mumbai — 400001 Scrip code: 531458 Subject: Intimation of Resignation of Ms. Nisha Yadav as Company Secretary and Compliance Officer of the company Dear Sir/Madam, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, read with Schedule III thereto, we wish to inform you that the Company had received the resignation letter of Ms. Nisha Yadav, Company Secretary and Compliance Officer of the Company, on July 14, 2026. The Board of Directors has taken note of and accepted her resignation. She has resigned from the position of Company Secretary and Compliance Officer and she shall be relieved from her duties with effect from the close of business hours on July 14, 2026. The details required under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with the applicable SEBI Circular are enclosed as Annexure A. The resignation letter submitted by Ms. Nisha Yadav is enclosed herewith. Kindly take the above information on your records. Thanking You. For and on behalf of Boston Commerce Limited Ghanshyam Dhananjay Gavali Managing Director DIN : 03343352 BOSTON COMMERCE LIMITED (Formerly known as Boston Bio Systems Limited) Registered office: A.828, Sun West Bank, Ashram Road P.O, Ahmedabad, City Taluka, Gujarat, India, 380009 CIN: L62013GJ1995PLC025476; E-mail: bostonsystem@yahoo.com Website: www.bostonbio.in ANNEXURE A The details with respect to the Resignation of Company Secretary required under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with The SEBI Master Circular No. SEBI/HO/CFD/PoD2/CIR/P/0155 dated November 11, 2024. S.No. Particulars Disclosures 1 Name of the Company Secretary CS NISHA YADAV 2 Reason for resignation CS NISHA YADAV has tendered her resignation from the post of Company Secretary to pursue carrier opportunity outside the company . 3 Date of cessation From close of working hours of 14.07.2026 4 Brief profile NOT APPLICABLE 5 Relation with directors of company NOT APPLICABLE (in case of appointment) 6 Shareholding, if any in the company NIL