Dear Sir, Announcement by Sonal Dushyant Patel to sale of her Shareholding of 14600 Equity Shares in Crestchem Limited.

CRESTCHEM LIMITED (CIN NO. L24100GJ1991PLC015530) Corporate Office:303B, Central Business Space, Opp: Fortune Land Mark Hotel, Opp: HDFC Bank, Near Usamanpura Cross Road, Ashram Road, Ahmedabad-380013. Phone: +91-9409119484, WEBSITE: www.crestchemlimited.in Email: info @crestchemlimited.in GST Number : 24AAACC8722C1Z5 Date: 23-06-2026 BSE Limited Phiroze Jeejeebhoy Towers Dalal Street, Mumbai – 400001 Scrip Code: 526269 Company: CRESTCHEM LIMITED Subject: Disclosure under Regulation 7(2) of SEBI (Prohibition of Insider Trading) Regulations, 2015 Dear Sir/Madam, Pursuant to Regulation 7(2) read with Regulation 6(2) of the SEBI (Prohibition of Insider Trading) Regulations, 2015, please find enclosed disclosure in Form C received from Ms. Sonal Dushyant Patel, Member of the Promoter Group (Sister of Promoter), wants to sale of 14,600 Equity Shares of the Company through open market transactions. Kindly take the same on record. For CRESTCHEM LIMITED Nitin Shantilal Shah Compliance Officer / Company Secretary Encl.: Form C Regi. o(cid:8)ice: Sr. No. 550/1, Sub Plot o. 12, Village Indrad, Taluka -Kadi, District- Mehsana, Pin code-382715, Gujarat. CRESTCHEM LIMITED (CIN NO. L24100GJ1991PLC015530) Corporate Office:303B, Central Business Space, Opp: Fortune Land Mark Hotel, Opp: HDFC Bank, Near Usamanpura Cross Road, Ashram Road, Ahmedabad-380013. Phone: +91-9409119484, WEBSITE: www.crestchemlimited.in Email: info @crestchemlimited.in GST Number : 24AAACC8722C1Z5 FORM C SEBI (Prohibition of Insider Trading) Regulations, 2015 [Regulation 7(2) read with Regulation 6(2) – Continual Disclosure] Name of the Company: CRESTCHEM LIMITED ISIN: 293N01016 Date of Securities Securities Name, PAN & Category of Securities Date of Intimation held before held after Mode Address Person Disposed Sale to disposal disposal Company Ms. Sonal Dushyant Patel PAN: ACMPP1906A 6, PRARTHNA Member of Equity VIHAR SOC, Promoter Equity Shares Market B H Group Shares 7795 22/06/2026 23/06/2026 14,600 Sale MANEKBAG (Sister of 6805 (0.48%) HALL, Promoter) AMBAWADI, AHMEDABAD GUJARAT- PIN-380015 Detailed Disclosure Type of No. of Shares Held No. of Shares Value Transaction No. of Shares Held Security Before Sale Sold (₹) Type After Sale Equity 14,600 6805 947379/- Sale 7795 Shares Trading in Derivatives (if any): Nil Name: Ms.Sonal Dushyant Patel PAN: ACMPP1906A SONAL DUSHYANT PATEL Date:23-06-2026 Place: AHMEDABAD_ Regi. o(cid:8)ice: Sr. No. 550/1, Sub Plot o. 12, Village Indrad, Taluka -Kadi, District- Mehsana, Pin code-382715, Gujarat. CRESTCHEM LIMITED (CIN NO. L24100GJ1991PLC015530) Corporate Office:303B, Central Business Space, Opp: Fortune Land Mark Hotel, Opp: HDFC Bank, Near Usamanpura Cross Road, Ashram Road, Ahmedabad-380013. Phone: +91-9409119484, WEBSITE: www.crestchemlimited.in Email: info @crestchemlimited.in GST Number : 24AAACC8722C1Z5 Regi. o(cid:8)ice: Sr. No. 550/1, Sub Plot o. 12, Village Indrad, Taluka -Kadi, District- Mehsana, Pin code-382715, Gujarat.