A “lawyer’s lawyer,” Aaron focuses his practice primarily on representing and advising lawyers and law firms in Minnesota on matters of legal ethics and law practice management. Aaron previously worked for the firm for three years before transitioning to the public sector where he worked as an attorney at the Minnesota Office of Lawyers Professional Responsibility, investigating and prosecuting matters involving attorney misconduct. Aaron rejoined the firm in July 2019. In addition to his ethics practice, Aaron manages the firm’s associate attorneys, litigation and transactional matters, and the firm's staff.
Aaron attended Mitchell Hamline School of Law, formerly William Mitchell College of Law, where he received a CALI award, earned Dean’s List honors, and served on the editorial board of the Mitchell Hamline Law Review Volume 42. Aaron also worked as an Adjunct Professor of Law at his alma mater from 2018 to 2023. Before law school, Aaron worked for more than four years in retail banking and consumer deposit compliance.
In his free time, Aaron enjoys golfing, four-wheeling, downhill skiing, and spending time with his family and friends. He is also an avid fan of the Minnesota Twins, Vikings, Wild, and Timberwolves.
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Practice Area
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Chat withState: Minnesota
Acquired: 2016
No misconduct found
305 North Fifth Avenue, Suite 375, Minneapolis, MN, 55401
Not Yet Reviewed
Ethics and professional responsibility lawyer | Jun 07
Relationship: Fellow lawyer in community
"Aaron is straightforward with his analysis and always willing to help work through a problem."
"Aaron is an exceptional attorney. When other attorneys need to work through a problem he's their guy. Diligent beyond belief and an expert in his field, Aaron is a great choice for anyone looking to get the most bang for their buck."
Criminal defense lawyer
Unknown lawyer
2025
Rising Star, Super Lawyers
2025
North Star Lawyer, Minnesota State Bar Association
2024
Rising Star, Super Lawyers
2024
North Star Lawyer, Minnesota State Bar Association
2023
Rising Star, Super Lawyers
2023
North Star Lawyer, Minnesota State Bar Association
2022
Rising Star, Super Lawyers
2021
Rising Star, Super Lawyers
2016
Dean’s List, Mitchell Hamline School of Law
2016
CALI Excellence for the Future Award, Mitchell Hamline School of Law
2014
Burton Award for Best Legal Writing - Nominee, William Mitchell College of Law
2013
William Mitchell Merit Scholarship, William Mitchell College of Law
2024 - Present
Managing Attorney and Shareholder, Christensen Sampsel PLLC
2019 - 2023
Senior Associate Attorney, Christensen Sampsel, PLLC
2018 - 2023
Adjunct Professor, Mitchell Hamline School of Law
2018 - 2019
Assistant Director, Office Of Lawyers Professional Responsibility
2016 - 2018
Associate Attorney, Christensen Sampsel, PLLC
2015 - 2016
Law Clerk, Christensen Sampsel, PLLC
2014 - 2016
Research Assistant, William Mitchell College Of Law
2016 - Present
Association of Professional Responsibility LawyersMember
2016 - Present
Federal Bar Association (Minnesota chapter)Member
2016 - Present
Minnesota State Bar AssociationMember
2016 - Present
Hennepin County Bar AssociationMember
2018 - 2019
National Organization of Bar CounselMember
2017 - 2018
Hennepin County Bar Association, District Ethics CommitteeMember
2016 - 2018
American Intellectual Property Law AssociationMember
Denying Defendants’ motions for summary judgment, in part, and allowing Plaintiffs’ claims for declaratory judgment and quiet title to proceed to trial.
Granting summary judgment in favor of Defendant on Plaintiff’s claims for trademark infringement, false advertising, declaratory relief, and trademark cancellation.
Successfully overcame Section 2(e) descriptiveness refusal and USPTO request to disclaim the word “JAGER.”
Granting temporary injunction enjoining association from conducting a foreclosure sale.
Denying Defendant's motion to dismiss claims for breach of contract, breach of fiduciary duty, tortious interference, and malicious prosecution; also granting Plaintiff's motion to amend pleadings to include FDCPA claims.
Obtaining default judgment against Defendant in contract action.
Affirming district court’s grant of summary judgment in favor of Defendant related to Plaintiff’s claims of civil theft and conversion.
Obtaining dismissal of tortious interference and breach of fiduciary duty claims in the absence of independently tortious conduct and in the absence of a fiduciary duty.
At a bench trial, finding Defendant agreed to indemnify Co-Defendant against loss incurred by Defendant’s failure to convey title in real property free and clear of all encumbrances, and granting $350,000 judgment plus attorney fees.
2016
JD - Juris Doctor
2025
A Year in Review: Update on Attorney Discipline Matters in 2024
2025
A Year in Review: Update on Attorney Discipline Matters in 2024
2024
A Year in Review: Update on Attorney Discipline Matters in 2023
2023
Ethical Issues Involved in Representing Student Athletes and Athletic Organizations
2023
Ethics for the Public Lawyer: Duty of Candor
2023
Ethics Year in Review: 2022
2022
Ethics, a Year in Review: 2021
2021
Ethics Developments in 2020: A Year in Review
2020
2019 in Hindsight: Ethics Case Law Update
2019
Ethics and the Duty to Report
2019
Your First Ethics Complaint: What Not to Do
2019
Tips & Tricks for DEC Chairs in Ethics Investigations
2019
Major Ethics Developments in 2018
2018
Ethics: Lessons Learned from the Mistakes of Others - A Synposis of Recent Minnesota Lawyer Discipline Cases
2018
Ethics & Fee Agreements - Practice Management Pointers
2018
Major Ethics Developments in 2017
2018
The Ethics Refresher for Family Law Practitioners
2018
Ethics Update for Family Law Attorneys
2018
Top 20 Things All Probate & Trust Lawyers Should Remember About Ethics
2018
Top 20 Things All Criminal Law Attorneys Should Remember About Ethics
2018
Disciplinary Update: A Synopsis of Recent Discipline Cases
2025
2023
2019
English