Alphatec Holdings, Inc. (NASDAQ:ATEC – Get Free Report) General Counsel Tyson Eliot Marshall sold 8,168 shares of the company’s stock in a transaction dated Wednesday, August 5th. Alphatec Price PerformanceShares of Alphatec stock opened at $9.31 on Friday. Vanguard Group Inc. now owns 6,883,626 shares of the medical technology company’s stock worth $144,831,000 after buying an additional 68,568 shares during the last quarter. Morgan Stanley now owns 4,340,936 shares of the medical technology company’s stock worth $91,333,000 after purchasing an additional 784,191 shares in the last quarter. State Street Corp now owns 2,889,240 shares of the medical technology company’s stock valued at $60,790,000 after purchasing an additional 174,287 shares during the last quarter.