Pre-offer diligence requirements: lead bankers and issuers must submit specified agreements and staged due diligence certifications before listing. Regulation 8 requires lead merchant bankers to submit an agreement with the issuer and prescribed due diligence certificates to the Board when filing the draft offer document, and to furnish subsequent confirmations after Board observations or lapse of the observation period, including statements of incorporation of Board suggestions, due diligence certificates at registration and immediately before opening, and post-opening certificates. Issuers must provide a board resolution for promoters' allotment, a Chartered Accountant's certificate verifying promoters' contribution with contributor details, and, when filing for listing, promoters' Permanent Account Number, bank account number and passport number to the recognised stock exchange.