Armstrong, 53, founded Green Day in 1987 with Mike Dirnt. The band has sold more than 85 million records worldwide and has won four Grammy Awards. Armstrong also won a Grammy for Best Musical Show Album for “American Idiot,” which also featured Green Day.

The privately owned club — it was founded by former head of comedy at Fusion Bryan Carmel and his Oakland boyhood friend and edtech entrepreneur Paul Freedman, with the help of outside investors — offered fans a chance to join a $1.2 million financing round last year. Some 2,200 of them signed up. A $2 million round is planned for this year.

Green Day frontman Billie Joe Armstrong and rapper Too $hort are attempting to keep baseball alive in the Bay Area. The music icons are joining the ownership group of the Oakland Ballers, a new independent team attempting to keep baseball alive in the city.

Billie Joe Armstrong of Green Day and rapper Too $hort are joining the ownership group of the minor league baseball team Oakland Ballers. After the A’s left for Las Vegas, there was a hole to fill in Northern California’s East Bay.

Now the only professional baseball team in the East Bay, the Oakland Ballers also received an investment from Too $hort. Billie Joe Armstrong Buys Stake in Oakland Minor League Baseball Team Eddie Fu