Johanna Holthöwer has been the managing director of handwerker promotion e. gmbh, a concert and tour promoter in North Rhine-Westphalia, since mid-2024, alongside founder Fred Handwerker. Previously, she worked as a project manager in the company for 16 years and took on the role of authorized signatory in 2018. Throughout her extensive career, she has led stadium shows for the Rolling Stones and Iron Maiden, as well as arena shows for artists such as Beyoncé, Lady Gaga, Justin Bieber, KISS, Leonard Cohen, Neil Young, Eric Clapton, Aerosmith, and Dolly Parton. Additionally, she has been responsible for numerous shows in clubs and venues of all sizes and managed European tours for Tokio Hotel and Till Lindemann.