Ryan P. Mattson

Charley joined the firm in 1985. His practice focuses on representation of closely held businesses in a wide variety of business transactions, including significant work in real estate ownership, development and construction. Specialized areas include business start-up, shareholder and employment agreements and representing clients in the sale or transition of their businesses. In addition to his transaction work, he represents clients in complex business litigation.

Sarah Crooks, a partner in the firm's Commercial Litigation group, focuses her practice on navigating clients through complex business litigation, class action lawsuits and attorney general investigations across a variety of industry sectors, including the telecommunications, food and restaurant, childcare and education and real estate sectors. Sarah also has extensive experience representing clients in the areas of consumer protection, securities litigation, fraudulent transfer litigation an...

Sonia Montalbano is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration, Commercial Litigation, Employment Law - Individuals, Employment Law - Management, Litigation - Labor and Employment, Litigation - Real Estate, Nonprofit / Charities Law and Personal Injury Litigation - Plaintiffs. Sonia, who practices law in Portland, Oregon, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Soni...

Kristin Asai is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Kristin, who practices law in Portland, Oregon, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kristin is held by other top lawyers in the same geographic and legal practice area.

Frank X. Curci is a Shareholder in Buchalter’s Portland and Scottsdale offices and a member of the Firm’s Corporate Practice Group and Intellectual Property Group. His practice focuses on the representation of high-tech companies (ranging from emerging growth companies to global companies), bioscience industry companies, universities/research institutions, global technology consortia, technology accelerators, and other technology-based companies.

Robert R. Calo is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Robert R., who practices law in Lake Oswego, Oregon, has been recognized since 2011. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Robert R. is held by other top lawyers in the same geographic and legal practice area.

Matthew Kalmanson is an accomplished appellate attorney and partner at Hart Wagner LLP in Portland, Oregon. He regularly serves as lead appellate counsel in cases before state and federal appellate courts in the Pacific Northwest. As a former federal and state appellate clerk, and an experienced appellate practitioner, Matt knows how to use the appellate process to his clients’ advantage. He is often hired to assist attorneys already in litigation, and brief and argue complex legal and ...

Steve D. Osborne is a top attorney recognized by Best Lawyers in the practice area(s) of Native American Law. Steve D., who practices law in Portland, Oregon, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Steve D. is held by other top lawyers in the same geographic and legal practice area.

Kirsten Day is a Shareholder in Buchalter’s Portland office and a member of the Firm’s Real Estate practice group. Ms. Day brings over 20 years of experience to her national practice in leasing, acquisition/disposition, development and financing of regional shopping centers and other retail properties, Class A office buildings and industrial properties.

Tara's practice emphasizes bankruptcy, creditors' rights, and commercial litigation. She represents all types of parties in all types of bankruptcy matters including unsecured creditors' committees, business debtors in reorganization proceedings, creditors including banks and other financial service providers, bankruptcy trustees and receivers. She protects clients' interests and represents them on a national level in multiple bankruptcy jurisdictions. Tara is certified by the American Board ...