From a story on axios.com by Jacob Knutson and Dan Primack headlined “Elon Musk offers to buy Twitter for $43 billion in cash”:

Elon Musk offered to buy Twitter for $54.20 a share in cash, or about $43 billion, according to documents filed with the Securities and Exchange Commission Wednesday.

Why it matters: The move, which Musk called his “best and final offer,” comes after the billionaire has repeatedly criticized Twitter, disclosed a 9.2% stake in the social media company and backed out of joining its board of directors.