Assertion Tickets

Assertion is a Tacoma-born artist project formed in 2019 by William Goldsmith (formerly of Sunny Day Real Estate, The Fire Theft, and Foo Fighters) and Justin Tamminga, with Bryan Gorder on bass. The band blends alternative rock with post-hardcore and post-rock dynamics, delivering dynamic loud/soft contrasts and textures that nod to 90s indie and modern heaviness. Their debut LP Intermission, released in 2021 on Spartan Records, earned praise for its impact and depth, including noted press from major outlets.

On the heels of their 2025 releases, Assertion continues to develop a robust sound across new material like Wounded, Please Wake Up, and Lock and Load, and remains an active presence on social channels connected through Bandcamp and other band-oriented platforms. While 2025 touring schedules aren’t publicly announced, the band previously performed in the Seattle area at venues such as Tractor Tavern and Sunset Tavern between 2021 and 2023. This page covers their biography, discography, and current touring information to help fans secure their seats for upcoming performances.

Biography, discography highlights, and tour information are updated to reflect the latest from Assertion. For fans in the Pacific Northwest and beyond, this page provides background on the band’s formation, influences, and notable releases, along with direct links to official social channels and Bandcamp pages. If you’re looking to stay in the loop on new dates or potential 2025 appearances, keep an eye on our listings and the artist’s official pages for announcements.

Remember: we’ve got you covered when it comes to securing tickets—easy, straightforward, and without fuss. Check back often for updated tour details, venue information, and direct links to purchase.