Gregory Sinning
Gregory Sinning
Estate and Probate Attorney
EDUCATION
- Belhaven University
- Bachelor of Accounting – 2010
- University of North Dakota
- Juris Doctorate – 2019
BAR ADMISSION
- Arizona – 2020
PROFESSIONAL AND LEGAL ASSOCIATIONS
- State Bar of Arizona
- Family Law Section Member, since 2022
- Maricopa County Bar Association
- Family Law Section Member, since 2022
NOTABLE CONFERENCES & SEMINARS
- AAML National Family Law Conference, attendee, 2024, 2025
- AAML BVR National Divorce Conference, attendee, 2022
- Family Law Institute featuring For Better or For Worse, attendee, 2022, 2023
- MCBA Bi-Annual Speed-Networking with Judges Events, attendee, since 2022
HONORS AND AWARDS
- Super Lawyers Rising Stars
- CALI Award, Trial advocacy
- Best Oralist, Legal Writing and Advocacy
ADDITIONAL MENTIONS
- Executive Managing Editor, Law Review
- Executive Publication Editor, Law Review
- Treasurer, Veterans Law Student Association
- Extensive Trial Experience
Gregory Sinning
Estate and Probate Attorney
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.
Client Review
“Amazing work and amazing job! Did everything perfect and the ruling went amazing . I recommend Greg 10/10. Thank you again for the help and constant communication threw out the case.”
EDUCATION
- Belhaven University
- Bachelor of Accounting – 2010
- University of North Dakota
- Juris Doctorate – 2019
BAR ADMISSION
- Arizona – 2020
PROFESSIONAL AND LEGAL ASSOCIATIONS
- State Bar of Arizona
- Family Law Section Member, since 2022
- Maricopa County Bar Association
- Family Law Section Member, since 2022
NOTABLE CONFERENCES & SEMINARS
- AAML National Family Law Conference, attendee, 2024, 2025
- AAML BVR National Divorce Conference, attendee, 2022
- Family Law Institute featuring For Better or For Worse, attendee, 2022, 2023
- MCBA Bi-Annual Speed-Networking with Judges Events, attendee, since 2022
HONORS AND AWARDS
- Super Lawyers Rising Stars
- CALI Award, Trial advocacy
- Best Oralist, Legal Writing and Advocacy
ADDITIONAL MENTIONS
- Executive Managing Editor, Law Review
- Executive Publication Editor, Law Review
- Treasurer, Veterans Law Student Association
- Extensive Trial Experience
EXCELLENT Based on 508 reviews Posted on WendyTrustindex verifies that the original source of the review is Google. Thank you to attorney Caleb McKay for making this transition easy and quick.Posted on cory whalinTrustindex verifies that the original source of the review is Google. Nik and Robin did an amazing job helping a friend of mine through her divorce!!Posted on Josephine JacksonTrustindex verifies that the original source of the review is Google. Most like everyone else I didn’t know who to get to represent me in my divorce. With so many lawyers to choose from how do you know who is right. I just happen to find Cantor Law Group just by searching divorce lawyers and I am so happy I picked them. When I went to my consultation from the time I walked in to the time I left I knew I had made the right decision. From the receptionist to the assistant to meeting and talking with Caleb McKay I felt welcomed and that they are there to help me. Anytime I needed to contact Caleb or his assistant I could and hear back either the same day or the next day. There were times I felt overwhelmed especially in the beginning with all the paperwork but they helped me out tremendous. Caleb and his staff were in constant contact with me and never made me feel lost or left out. They made sure I knew what the next step was and ready for it. I cannot thank them enough for all they have done for me. I highly recommend Cantor Law Group
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