ABT has sold 77% of its original (Jan 2015) MYL holding—and now owns 25.8M shares (a 4.8% stake): https://www.sec.gov/Archives/edgar/data/1800/000110465917018990/a17-9815_1sc13da.htm Since ABT’s stake in MYL is now <5%, no further reports on Form 13D will need to be filed.