The companies would also need to disclose the details about any pact, treaty or contract signed with media firms, as also the frauds or defaults by promoters or top executives as part of the new regulations notified by Sebi.
The detailed circular follows Sebi notifying the new Listing Regulations last week, which have replaced the Listing Agreement that the companies earlier required to sign with stock exchanges.
"In order to enable investors to make well-informed investment decisions, timely, adequate and accurate disclosure of information on an ongoing basis is essential. Also, there is a need of uniformity in disclosures made by listed entities to ensure compliance in letter and spirit," Sebi said.
The events that would need to be disclosed by the listed companies include details of merger, acquisitions and restructuring schemes, sale of business units, securities transactions such as issuance, forfeiture and buyback, rating revisions, outcome of board meetings and shareholder meets, joint ventures and family settlements.