DEERFIELD, Ill., June 30, 2020 (GLOBE NEWSWIRE) — RTI Surgical Holdings, Inc. (Nasdaq: RTIX), a global surgical implant company, today provided a business update in conjunction with releasing financial and operating results for the quarter ended March 31, 2020. Business Update Highlights: Scheduled special meeting of stockholders for July 15, 2020 to vote on sale …