The Giants acquired Baumann from the Mariners on Sunday in exchange for cash considerations, Shayna Rubin of the San Francisco Chronicle reports.
Baumann will move on to his third organization of the season after beginning the campaign in Baltimore before being dealt to Seattle in May. Over his 35 appearances out of the bullpen with the Orioles and Mariners this season, Baumann has produced a 4.41 ERA and 1.38 WHIP with 32 strikeouts over 34.2 innings. Baumann doesn't have any minor-league options remaining and will need to be added to the Giants' 26-man active roster.