About
Shelley Detwiller DiGiacomo is a highly skilled business and corporate attorney in Phoenix, Arizona, with over 22 years of experience. She co-founded Detwiller DiGiacomo & Pisaruk PLLC, providing expert legal counsel in business, corporate, and securities law. Her clients range from startups and entrepreneurs to large private companies, and she specializes in guiding them through securities transactions and various business matters.
Shelley began her legal career at Cleary, Gottlieb, Steen & Hamilton in New York, where she gained invaluable experience in international mergers and acquisitions and sophisticated financing transactions. She also worked in their London office before returning to Phoenix in 2004. After years with major law firms, she founded her own practice in 2011, driven by the entrepreneurial spirit she gained from working with her startup clients.
Shelley earned her J.D. from Cornell Law School, graduating summa cum laude. She was an Articles Editor for the Cornell Law Review and was inducted into the Order of the Coif. Before law school, she obtained an M.A. from New York University, where she was a McCracken Fellow. Shelley also holds a B.S. from Arizona State University, where she graduated magna cum laude and was a Flinn Scholar.
Throughout her career, Shelley has helped clients navigate complex legal matters, from commercial contracts and licensing agreements to selling and acquiring assets and companies. She is an active member of professional organizations such as the State Bar of Arizona and the American Bar Association. U.S. News and World Report has recognized Shelley as one of the Best Lawyers in America in corporate law.
Law Office Affiliations
- Partner, DDP Legal, PLLC
- Member, State Bar of Arizona
- Member, American Bar Association
Licensed State
- Arizona
Education
- Cornell Law School
Juris Doctor (JD) - New York University
Master of Science (MS) - Arizona State University
Bachelor of Science (BS)
Awards & Badges



- Contracts And Agreements
- Corporate And Incorporation
- Licensing
- Mergers And Acquisitions
- Securities Offerings