Carissa K. Seidl

Shareholder David Villadolid is the senior partner in the firm’s Employment Law section and is recognized as an AV® Preeminent™* 5.0 out of 5 peer review rated attorney in Martindale-Hubbell. With more than 37 years of legal practice, David successfully advises companies, executives, and management on a broad spectrum of business and employment issues including compliance with state and federal laws and regulations. Clients express confidence in David’s ability to provid...

Amanda J. Taylor is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Litigation - Insurance. Amanda J., who practices law in Phoenix, Arizona, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Amanda J. is held by other top lawyers in the same geographic and legal practice area.

Andrea S. Tazioli is an experienced litigator and trial attorney practicing in the areas of White Collar Crime/Criminal Defense, Commercial Litigation, Government and Internal Investigations. Andrea is skilled in all aspects of litigation, including law and motion practice, mediation, arbitration, trial, and appellate practice. Andrea has tried numerous cases (civil and criminal) in both state and federal court. Andrea regularly defends individuals and corporations charged with white collar a...

Education: University of Arizona College of Law, Tucson, Arizona J.D. - 05/1979 Arizona State University, College of Business, Tempe, Arizona B.S. - 12/1975 Bar Admissions: Arizona, 1979 U.S. District Court District of Arizona, 1979 Professional Associations: Arizona Supreme Court, Commission on Technology, Commissioner, 2015 to 2020 State Bar of Arizona, Real Property Section, Member West Maricopa County Bar Association, Director, 1990 to Present Southwest Valley Chamber of Commerce, Governm...

John K. Wittwer is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law, Insurance Law and Litigation - Insurance. John K., who practices law in Phoenix, Arizona, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John K. is held by other top lawyers in the same geographic and legal practice area.

Robert S. Kant has represented numerous large and small issuers of equity and debt securities in hundreds of securities transactions involving the sale of more than $20 billion of securities through virtually every major investment banking firm in the United States. He regularly represents national, regional and local investment banking firms, as well as a variety of investment banking, private equity and venture funds. He also serves as a director or member of advisory boards to public and p...

Katherine M. Corcoran is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Malpractice Law - Defendants. Katherine M., who practices law in Phoenix, Arizona, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Katherine M. is held by other top lawyers in the same geographic and legal practice area.

JIM O'SULLIVAN represents closely-held businesses, including law firms and other service professionals. Serving as general counsel and primary contact for businesses and their owners, Jim focuses on the ongoing legal needs of these clients, as well as strategic planning for growth and ownership succession opportunities. Jim leverages his considerable planning, negotiation and contract drafting experience to counsel clients through key events such as business formation, joint ventures, mergers...

For over 40 years, Otto has helped individuals, business owners, and employers comply with and plan for laws and regulations related to federal and state taxation, employee benefits, and executive compensation. He assists clients with audits, investigations, and regulatory disputes related to these areas, and advises businesses and their owners regarding business transactions and long-term business succession and estate planning. Otto also has significant experience in federal procurement reg...

Gary Gotto's diverse experience helps him meet his clients' diverse needs. Gary is a member of Keller Rohrback's nationally recognized Complex Litigation Group. He has a broad range of practice experience and interests, including all aspects of corporate and real estate transactional work, securities issuance and compliance, Chapter 11 bankruptcy and workout matters, and general commercial and ERISA litigation. Gary speaks and teaches regularly on a number of topics, including an annual real ...