Peguero was traded from the Angels to the Brewers on Tuesday along with Janson Junk and Adam Seminaris in exchange for Hunter Renfroe.
Peguero has appeared in 16 games for the Angels over the past two seasons but has struggled in his first taste of the majors with 13 earned runs allowed across 17.1 innings. The 25-year-old pitched well at Triple-A last year with a 2.84 ERA and will now attempt to find his footing in a new organization.