Complex sentence: In 1987, RBC sold the bank to an investment group headed by Lord Ashcroft as Belize Holdings, Inc., then Carlisle Holdings, then Belize Bank Holdings; the new owners renamed the bank, "Belize Bank".
Split into simpler sentences: In 1987, RBC sold the bank to an investment group, Belize Holdings, Inc., then Carlisle Holdings, now Belize Bank Holdings. The new owners renamed the bank, "Belize Bank".