Lauren Hirsch and Mike Isaac

The move may make it tougher for Mr. Musk, who has said he is not getting enough information from the company, to end the $44...

Mr. Musk’s lawyers said Twitter was “actively resisting” his requests.

It’s highly unusual to move from a “poison pill” to a $44 billion deal in under two weeks. But Twitter’s board ran out of options.

Twitter’s 11-member board met on Sunday morning to discuss Mr. Musk’s offer to buy the company and take it private.