John M. Welch

Known for his extensive work in corporate and business law, Michael Aguirre excels at helping organizations of all sizes and maturities address complex legal and business challenges. Michael has wide-ranging experience in corporate finance, mergers and acquisitions, and general business transactions, as well as counseling executive teams and boards on corporate governance and various corporate matters. He has also advised clients in complex state, federal, and local regulatory environments, i...

DANIEL P. QUIGLEY is a CDQ partner and the Vice President of the firm. He has been practicing law in Arizona since 1984. Since joining CDQ in 1997, Dan has practiced in all areas of commercial litigation, including cases raising antitrust and intellectual property issues. Dan has lectured at the State Bar of Arizona’s Professionalism courses and been an instructor at the National Institute for Trial Advocacy’s Arizona Deposition Skills Program. He is a member of the Xavier College...

Todd Hall Professional Experience Mr. Hall has extensive experience representing clients in the acquisition, finance, development, leasing and disposition of commercial. Mr. Hall’s recent engagements include general acquisition, financing, disposition and leasing of office, retail, industrial, mixed-use development projects and master-planned community development projects; representation of REITs with respect to acquisition and disposition of properties across the United States; and re...

Chris Welker is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Personal Injury Litigation - Defendants. Chris, who practices law in Phoenix, Arizona, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Chris is held by other top lawyers in the same geographic and legal practice area.

Throughout his career, Andy has developed a reputation as a skilled negotiator and trusted advisor for complex businesses. His experience representing buyers, sellers, startup entrepreneurs, and investors has enriched his expertise in understanding transactions from multiple angles. The bulk of Andy’s practice revolves around sophisticated business transactions as well as serving as outside general counsel to private businesses and nonprofits working alongside Boards of Directors, CEOs,...

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...

Steve Jackson, the firm's president, has been selected by The Best Lawyers in America® as the 2019 Phoenix "Lawyer of the Year" in Construction Litigation. His practice is concentrated in the areas of construction law, real estate law and commercial litigation, and he represents a broad range of individuals and businesses in the construction and real estate development industries. In addition to client representation, Steve has served as a mediator, arbitrator and expert witness in a numb...

Bob has substantial experience in complex commercial litigation matters, focusing particularly on intellectual property and securities related litigation, arbitration and enforcement proceedings, contract, trade secret, business tort and shareholder litigation. He regularly represents clients in matters and investigations before the United States Securities and Exchange Commission, the Financial Industry Regulatory Authority (FINRA) and the Arizona Corporation Commission. Due to his wide rang...

Jon is a partner at O'Steen & Harrison, PLC. He joined the firm in 2005 and practices in the areas of personal injury, car accidents, contaminated food, legal malpractice, insurance bad faith, defective products and commercial litigation. He graduated from Occidental College in 2002 (B.A., Economics and Political Science) and the Arizona State University College of Law in 2005 (J.D., cum laude). He served as Senior Articles Editor of the Arizona State Law Journal and was a Willard H. Pedr...

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...