Closed Pfizer biopharma facility in Everett gets a new owner and a mystery tenant
Breakthrough Properties said it bought Seagen’s 270,000 sq ft Everett, Wash. bio-manufacturing campus for $78 million and leased it for 21 years to an unnamed global biopharmaceutical company. Seagen spent about $350 million building it, but Pfizer, after acquiring Seagen for $43 billion in 2023, wound down construction. Breakthrough’s JV with Tishman Speyer and Bellco Capital declined tenant details.






