Belgian brewing major Anheuser-Busch has agreed to acquire US-based Elysian Brewing.

The acquisition covers Seattle Airport Way brewery, as well as four Seattle brewpubs, Elysian Capitol Hill, Elysian Tangletown, Elysian Fields and Elysian BAR.

This transaction is expected to be completed by the end of the first quarter of 2015.

The financial terms of the transaction are not disclosed.

Anheuser-Busch Craft CEO Andy Goeler said: "Elysian’s story includes everything we look for in a partner.

"The team has spent their careers brewing distinctive beers in the thriving West Coast beer community and building unique venues that celebrate beer. As the fastest growing brewer in Washington, their recipe is working.

"Elysian’s brands are an important addition to our high-end beer portfolio, and we look forward to working together."

Elysian sold over 50,000 barrels of beer in 2014, with Immortal IPA accounting for more than a quarter of Elysian’s total volume.

Elysian co-founder and Head Brewer Dick Cantwell, added, "Throughout our journey we’ve been focused on brewing a portfolio of both classic and groundbreaking beers and supporting innovation and camaraderie in the beer industry through collaboration and experimentation.

"By joining with Anheuser-Busch we’ll be able to take the next steps to bring that energy and commitment to a larger audience."