Elon Musk announced he had made an offer to buy Twitter for $43 billion.

Twitter announced it had failed to reach an agreement with him about joining its board.

I invested in twitter as i believe in its potential to be the platform for free speech around the globe

Twitter shares closed down 1.68% on Thursday

Musk: My offer is my best and final offer and if it is not accepted

I would need to reconsider my position as a shareholder

Musk first disclosed his stake in the social media giant on April 4th

Parag Agrawal reported told employees in a staff meeting that the company is evaluating the offer