(October 11, 2023, 12:23 PM EDT) -- SAN FRANCISCO — The Securities and Exchange Commission filed an application in the U.S. District Court for the Northern District of California for an order to compel Elon Musk to testify as part of an SEC investigation into his 2022 purchase of stock in Twitter Inc., saying Musk refused to comply with an administrative subpoena in September after having agreed to testify in May and called the subpoena harassment....