Final answer:
For a dividend with a record date of Tuesday, June 12th, the regular way ex-dividend date would be Monday, June 11th, considering that there are no holidays affecting it and depending upon the rules of the stock exchange.
Step-by-step explanation:
If the record date for a dividend is Tuesday, June 12th, then the regular way ex-dividend date is typically set for one business day prior, which would be Monday, June 11th.
However, because stock exchanges have different rules, and holidays can affect the schedule, it is always wise to check the exchange where the stock is listed to confirm the exact ex-dividend date. It is important to note that investors must purchase the stock before the ex-dividend date to be entitled to the dividend payment.