Are shareholders eligible for corporate action benefits if the shares are sold on the ex-date/record date?

Yes, shareholders remain eligible for corporate action benefits even if they sell the shares on the ex-date/record date. The key requirement is to have the shares in your demat account on the ex-date/record date to qualify for these benefits. If shares are sold on the ex-date/record date, they will be debited from the demat account on the next day, i.e., T+1 day, and not on the same day.