** Shares of cancer therapy developer 2seventy bio TSVT.O
rise ~7.7% to $2.31
** Activist investor Engine Capital has urged a board
refresh at TSVT and elevating its chief operating officer Chip
Baird as CEO
** Engine Capital, which owns about a 3% stake in 2seventy
bio, says the company should exclusively focus on its blood
cancer therapy Abecma
** The push from the shareholder comes after TSVT in
September disclosed CEO Nick Leschly's intention to step down
and transition to the role of chairman
** Including session's move, stock down 75% YTD
(Reporting by Christy Santhosh)
((Christy.Santhosh@thomsonreuters.com))