Please find enclosed herewith the intimation regarding closure of trading window for the quarter ended 30th September 2026.

Ref: M/3743/0006/2023 Date: 18/ 04/ 2023 (cid:9) Date: 23.09.2026 To, To, Chief Engineer (O&M-I) BSE Limited National Stock Exchange of India Ltd. WBSETCL, Vidyut Bhavan , Phiroze Jeejeebhoy Towers Exchange Plaza, 5th Floor, Plot No. C/1 Kolkata Dalal Street, G- block, Bandra- Kurla Complex SubM: uOmffbear i-S4h0e0e0t0 f1o.r the repairin g estim ates oBf Manadrrsao (nEs )M, Makuem” b6a3i-04 0k0V0A5,1 3 3/ 0.415 kV Station Service TraSncsfroiprm Ceord Yeo: m51: 72406078 : (sl no: 82078 ) receivSecdr ipa tI Dfa:c MtorAyR pSrOemNiSse s of M/s Marsons Limited on dt. 16.0 2.2023 Sub: Intimation of Closure of Trading Window for the quarter ended September 30, 2026. Ref: Dear Sir/ Madam, 1) LoJ No: Memo No. KAO/TR/Subhasgram (TR-4) DT. 31.01.2023 2) Physical Joint Inspection M/3743/Repair/004/2023 dt. 11.04.2023 Please note that pursuant to SEBI (Prohibition of Insider Trading) Regulations, 2015 read with SEBI (Prohibition of Insider Trading) (Amendment) Regulations, 2018 and in compliance with company’s Dear Sir, Code of Conduct to regulate, monitor and report Insider Trading, the window for dealing in shares of the Company for all Designated Persons and immediate relatives will remain closed from 1st October Referring to the MOM made after the joint inspection along with your officials (M/3743/Repair/004/2023 2026 till the expiry of 48 hours from the announcement of the Unaudited Financial Results dt. 11.04.2023) regarding fault assessment & subsequent repairing of above transformer at our budge bud(gPer owvoisrikosn. aWl)e o af rteh es uCbommitptainngy ofourr tohfef eqru easrtteimr eanted eads 3b0et lh o Swe fpoter myobuerr k2i0n2d6 c. onsideration. Quoted Price The dateS lo. fN mo.e eting in which the fDineasnccriipalt iroensu olfts w woirlkl be approved and considered by the Directors (INR ₹) will be communicated separately. Accordingly, all the Designated Persons and the immediate relatives of the ComUpnalnoya dairneg a dovf itsreadn snfootr tmo etrra, dpeh iyns itchael sinecspureictiteios no fo tfh e Company during the aforesaid 1 5,000.00 accessories , quantity of oil with tank period of closure of trading window. Un-tanking of Transformer for checking of Active 2 10,000.00 Part This is for your information and record. Physical checking of tank/ active part with 3 20,000.00 WBSETCL official Thanking You, Magnetic balance of HV & LV, resistance 4 25,000.00 measurement done for healthiness check Yours Faithfully For Marsons LimiOtevde rall Healthiness Check of Transformer Active 5 15,000.00 Part and all other parts as well 6 Removal of Top yoke of core assembly 7,500.00 (Uttara Sharma) Resetting of 3 LV coils with line & shorting leads Company S7 ecretary 25,000.00 after removing top yoke (M. No. A48464) 8 Resetting of top yoke 10,000.00 9 Overhauling of Tank Body 15,000.00 Supply of new sleeving and Bakelite tubes for HV 10 5,000.00 Tap leads and Line Leads Marsons LImited Marsons House, Budge Budge Trunk Road, Chakmir, Maheshtala, Kolkata 700142, CIN: L31102WB1976PLC030676 Mail: info@marsonsonline.com Website: www.marsonsonline.com Phone: +91 33 22127189