May 5 (Reuters) - ** Shares of cryptocurrency exchange Bullish BLSH.N fall 8.7% to $37.16 in premarket
** BLSH is set to acquire global transfer agent Equiniti from private equity firm Siris in an all-stock transaction valued at $4.2 billion
** The transaction includes about $1.85 billion of assumed debt and roughly $2.35 billion in Bullish stock, the company said
** Equiniti processes about $500 billion in annual payments and supports over 20 million verified shareholders
** The deal is expected to close in January 2027
(Reporting by Pragyan Kalita in Bengaluru)
((Pragyan.Kalita@thomsonreuters.com;))