IBKR receives information on mandatory actions from a variety of third party sources and will forward the information as received to our clients. It is possible that the information is incomplete, such as when a stock dividend has been declared but the reinvestment price for the additional shares is not known. This could happen in cases where the reinvestment price is based on an average of closing prices over a period.
Holders should review information available on the company websites or in associated press releases for details surrounding any corporate action.