Due Bill Period
Definition of 'Due Bill Period'
In the context of corporate actions (such as dividends, issuance of rights and warrants, splits, etc.), the period during which remittances to investors are due - once stockholders of record are checked on the record date.
Investopedia explains 'Due Bill Period'
For example, suppose that a stock is going to issue a regular quarterly dividend. The record date is the date at which the list of stockholders of record is prepared - anyone who is on record as owning the stock as of that date will receive the dividend. The ex-date, which usually occurs two days earlier, is the date at which the shares trade on the open market without the right to the dividend (i.e. the time at which a buyer cannot settle his purchase in time to be a holder of record for the dividend).
The period beginning at the record date and usually ending two days later (four days after the earlier ex-date) is when the identities of the holders of record are known and payment is due to them - this is the due bill period.