https://apnews.com/92fe6980cbcfdedea43637ac336c367a > Elon Musk is offering to buy Twitter, just days after the Tesla CEO said he would no longer be joining the social media company’s board of directors. > Twitter Inc. said in a regulatory filing on Thursday that Musk, who currently owns slightly more than 9% of its stock and is the company's biggest shareholder, provided a letter to the company on Wednesday that contained a proposal to buy the remaining shares of Twitter that he doesn't already own. Musk offered $54.20 per share of Twitter's stock.