Pinterest Inc, the owner of the image search website known for the food and fashion photos that its users post, filed for an initial public offering with U.S. regulators on Friday, looking to tap into a red-hot market for new stock offerings.

Elon Musk’s lawyers said that the U.S. Securities and Exchange Commission failed to satisfy its heavy burden of showing that the Tesla Inc chief executive should be held in contempt, and the tweet prompting its contempt motion was both proper and “not material.”

U.S. prosecutors on Friday added three new criminal charges to their indictment against British entrepreneur Mike Lynch related to the $11.1 billion sale of his software company Autonomy to Hewlett-Packard in 2011.