Gregory C. Sinning - Phoenix, AZ
Attorney at DM Cantor
Estate Planning Lawyers in Phoenix, AZ
40 N Central Ave Suite 2300 Phoenix, AZ 85004
- Free Consultation
- 1 Super Lawyers®
-
6
Years
Experience
Phoenix Estate Planning Lawyer
Updated: 10/26/2026
Areas of Practice
- Estate Planning
Attorney Information
Overview
A believer that hard work and determination can lead to amazing results, Greg has carried that approach through every stage of his career—and now brings it to helping clients plan for the future and protect what matters most.
Greg grew up in Brandon, Mississippi, and graduated from Belhaven University with a Bachelor’s Degree in Accounting. After graduation, Greg worked for a regional moving company as its office manager. However, Greg found his calling for the law when he made a career change, taking a position as a paralegal for a Jackson, Mississippi-based tax law firm. Greg used the skills he learned as a paralegal, working closely with clients, to further his legal career. He then finished his legal education at the University of North Dakota School of Law. During law school, Greg was a member of Law Review and represented his law school at a national appellate moot court competition. He also clerked for a Maricopa County Superior Court Judge, where he gained hands-on experience inside the courtroom.
After earning his Juris Doctorate, Greg began his legal career in employment law, assisting people through tumultuous and uncertain times. There, he honed his skills as a negotiator, helping numerous clients obtain severance packages after unexpected job loss. Greg then transitioned into commercial contract law, where he developed a strong foundation in litigation and advocacy, spending significant time in the courtroom and gaining insight into disputes.
Greg later focused his practice on family law, guiding clients through some of the most personal and emotionally complex challenges they will ever face. This experience sharpened his ability to manage expectations, navigate sensitive family dynamics, and develop practical, forward-looking solutions tailored to each client’s circumstances.
Today, Greg applies that same perspective to estate planning. His background in family law and tax law gives him a unique understanding of how conflict can arise, and how thoughtful planning can prevent it. He works closely with clients to create clear, effective estate plans that protect their families, preserve their assets, and provide peace of mind. Drawing on his experience in negotiation, litigation, and client counseling, Greg approaches estate planning with both precision and empathy, helping clients make informed decisions about their futures to help give them peace of mind.
When Greg is not working with clients to plan and protect their legacies, he enjoys spending time with his family. They enjoy traveling together and exploring Arizona. When he can, Greg can be found teeing it up on one of the valley’s numerous golf courses.
Awards and Honors
Awards
Honors
- Super Lawyers Rising Stars
- CALI Award, Trial advocacy
- Best Oralist, Legal Writing and Advocacy
Other Sources of Feedback About Gregory C. Sinning
Included on the 2027 Southwest Super Lawyers list
Past Lists
- 2026 Southwest Super Lawyers list
- 2025 Southwest Super Lawyers list
Education
Legal Education
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University of North Dakota School of Law, Grand Forks, North Dakota, 2019
Juris Doctorate
Non Legal Education
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Belhaven University, 2010
Major: Accounting
Current Employment Position(s)
-
Attorney
Classes and Seminars
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AAML National Family Law Conference, attendee, 2024, 2025
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AAML BVR National Divorce Conference, attendee, 2022
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Family Law Institute featuring For Better or For Worse, attendee, 2022, 2023
- MCBA Bi-Annual Speed-Networking with Judges Events, attendee, since 2022
Bar Admissions
- Arizona, 2020
Other Affiliations
- State Bar of Arizona, Family Law Section Member, since 2022
- Maricopa County Bar Association, Family Law Section Member, since 2022
Photo
Contact
40 N Central Ave
Suite 2300
Phoenix, AZ 85004
Phone Number: 602-857-9440
Email: Send a message
Hours: Open 24/7
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