Intimation of change in management.

BOSTON COMMERCE LIMITED (Formerly known as Boston Bio Systems Limited) Registered office: Office No. 11, Krishna Complex, Mahatma Gandhi Bridge, Shreyas Colony, Navrangpura, Ahmedabad, 380009 CIN: L62013GJ1995PLC025476; E-mail: bostonsystem@yahoo.com Website: www.bostonbio.in Date: 12/08/2026 BSE Limited Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai – 400 001 Maharashtra, India Scrip Code: 531458 | ISIN: INE109B01019 Subject: Intimation of Resignation of Mr. Ghanshyam Dhananjay Gavali as Managing Director of the Company under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Madam, Pursuant to Regulation 30 read with Schedule III of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”), and applicable SEBI Circulars, we hereby inform you that Mr. Ghanshyam Dhananjay Gavali (DIN: 03343352) has tendered his resignation from the position of Managing Director and Director of Boston Commerce Limited (“the Company”), with effect from close of business hours on 12th August, 2026, due to personal commitments. The details required pursuant to Regulation 30 of the SEBI Listing Regulations read with the applicable SEBI Circulars are enclosed herewith as Annexure I. A copy of the resignation letter received from Mr. Ghanshyam Dhananjay Gavali is also enclosed herewith. The Company places on record its appreciation for the contribution made by Mr. Ghanshyam Dhananjay Gavali during his tenure with the Company. You are requested to kindly take the above information on record. Thanking you, Yours faithfully, For Boston Commerce Limited GHANSHYAM DHANANJAY GAVALI MANAGING DIRECTOR DIN: 03343352 BOSTON COMMERCE LIMITED (Formerly known as Boston Bio Systems Limited) Registered office: Office No. 11, Krishna Complex, Mahatma Gandhi Bridge, Shreyas Colony, Navrangpura, Ahmedabad, 380009 CIN: L62013GJ1995PLC025476; E-mail: bostonsystem@yahoo.com Website: www.bostonbio.in ANNEXURE I Details required under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with applicable SEBI Circulars Sr. No Disclosure Requirement Details 1. Reason for change viz. resignation Mr. Ghanshyam Dhananjay Gavali (DIN: 03343352) has tendered his resignation from the position of Managing Director and Director of the Company with effect from close of business hours on 12th August 2026 , due to personal commitments. 2. Date of cessation 12th August 2026 3. Names of listed entities in which Not Applicable the resigning director holds directorship, indicating the category of directorship and membership of Board Committees, if any 4. Brief Profile (in case of Not Applicable appointment) 5. Disclosure of relationships Not Applicable between Directors (in case of appointment) 6. Mr. Ghanshyam Dhananjay Gavali has Confirmation that there are no confirmed that there are no other material other material reasons other than reasons for his resignation other than those those provided stated in his resignation letter. 7. Letter of Resignation along with Enclosed herewith detailed reason for resignation BOSTON COMMERCE LIMITED (Formerly known as Boston Bio Systems Limited) Registered office: Office No. 11, Krishna Complex, Mahatma Gandhi Bridge, Shreyas Colony, Navrangpura, Ahmedabad, 380009 CIN: L62013GJ1995PLC025476; E-mail: bostonsystem@yahoo.com Website: www.bostonbio.in Date: 12th August, 2026 BSE Limited Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai – 400 001 Scrip Code: 531458 | ISIN: INE109B01019 Subject: Intimation of Resignation of Mr. Kunjan Nathabhai Rathod as Chief Financial Officer (CFO) of the Company under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Madam, Pursuant to Regulation 30 read with Schedule III of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”) and applicable SEBI Circulars, we hereby inform you that Mr. Kunjan Nathabhai Rathod (DIN: 10964701) has tendered his resignation from the position of Chief Financial Officer (CFO) of Boston Commerce Limited (“the Company”), with effect from the close of business hours on 12th August, 2026, due to his pre-occupation and other personal commitments. The details required pursuant to Regulation 30 of the SEBI Listing Regulations read with the applicable SEBI Circulars are enclosed herewith as Annexure I. A copy of the resignation letter received from Mr. Kunjan Nathabhai Rathod is also enclosed herewith. The Company places on record its appreciation for the contribution made by Mr. Kunjan Nathabhai Rathod during his tenure with the Company. You are requested to kindly take the above information on record. Thanking you, Yours faithfully, For Boston Commerce Limited GHANSHYAM DHANANJAY GAVALI MANAGING DIRECTOR DIN: 03343352 BOSTON COMMERCE LIMITED (Formerly known as Boston Bio Systems Limited) Registered office: Office No. 11, Krishna Complex, Mahatma Gandhi Bridge, Shreyas Colony, Navrangpura, Ahmedabad, 380009 CIN: L62013GJ1995PLC025476; E-mail: bostonsystem@yahoo.com Website: www.bostonbio.in ANNEXURE I Details required under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with applicable SEBI Circulars Sr. No. Disclosure Requirement Details 1. Reason for change viz. Mr. Kunjan Nathabhai Rathod has tendered resignation his resignation from the position of Chief Financial Officer (CFO) of the Company due to his pre-occupation and other personal commitments. 2. Date of cessation Close of business hours on 12th August, 2026 3. Brief Profile (in case of Not Applicable appointment) 4. Disclosure of relationships Not Applicable between Directors (in case of appointment) 5. Mr. Kunjan Nathabhai Rathod has confirmed Confirmation regarding material that there are no other material reasons for reasons for resignation his resignation other than those stated in his resignation letter. 6. Letter of Resignation along with Enclosed herewith detailed reason for resignation