SEBI directs depositories to implement an operational framework for a new ISIN-level freeze mechanism covering promoter and promoter group shareholdings during share buybacks, effective from buyback approval through offer closure. In a circular issued to depositories, the regulator asks them to put in place the required systems and operational guidelines by August 1. The framework includes procedures for listed companies to provide instructions to freeze promoter holdings at the ISIN level, along with details on how promoters can participate by tendering shares in buybacks conducted through the tender offer route.

SEBI’s instructions also address how pre-existing encumbrances are handled. The regulator states that encumbrances created before the start of the buyback period may be invoked or released, but the ISIN-level freeze continues to apply to the affected shares or other specified securities. The directive follows SEBI’s July 1 notification amending the SEBI (Buy-back of Securities) Regulations, 2018, under which promoter and promoter group holdings (including holdings by associates) remain frozen from the date the board or shareholders approve the buyback proposal until the buyback offer closes.