The moves, highlighted by Vancouver's release of former U.S. international Lee Nguyen are listed below.
- The Vancouver Whitecaps announced that English-born Matt Watson received his U.S. green card and is now considered a domestic player by MLS. The club also announced that it has waived Lee Nguyen.
- The Columbus Crew signed two of it's 2012 SuperDraft and Supplemental draft selections in Aubrey Perry (SuperDraft, 26th overall) Kirk Urso (Supplemental Draft, 10th overall). Terms of the deals were not disclosed.
- Real Salt Lake added eight players to its roster among which one was a Homegrown Player, four were draft choices and three were trialists. Those signed were Emiliano Bonfigli (Supplemental Draft, 17th overall), Leone Cruz (trialist), Diogo de Almeida (SuperDraft, 24th overall), Lalo Fernandez (Homegrown Player), Enzo Martinez (SuperDraft, 17th overall), Jonny Steele (trialist), Terukaza Tanaka (trialist), Sebastian Velasquez (SuperDraft, 36th overall).
- The Seattle Sounders signed two SuperDraft picks. Andrew Duran (15th overall) and Babayele Sodade (34th overall), both defenders, signed professional contracts with the club.
- Montreal announced it had signed defender Callum Mallace (Super Draft, 20th overall), forward Evan James (Supplemental Draft, first overall), and defender Giener Garcia (Supplemental Draft, second overall, from Vancouver).