Elon Musk, who recently became the single biggest shareholder of Twitter, will be joining the social media company’s board of directors, according to Twitter CEO Parag Agrawal and a regulatory filing. “I’m excited to share that we’re appointing @elonmusk to our board! Through conversations with Elon in recent weeks, it became clear to us that he would bring great value to our Board,” Agrawal said in a tweet on Tuesday. In a regulatory filing with the Securities and Exchange Commission (SEC), it was revealed that Musk will serve as a “Class II” director with a term that expires at its 2024 annual meeting. Under the conditions of Musk’s appointment, he will not own or control more than 14.9 percent of Twitter shares, according to the filing. Musk made headlines on Monday when regulatory filings revealed that he had taken a 9.2 percent stake in Twitter, becoming its biggest individual shareholder. Musk …