Atty. John D. Robertson

Atty. John D. Robertson

John D. Robertson is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Mergers and Acquisitions Law and Securities / Capital Markets Law.

Oklahoma City Oklahoma City 40 yrs experience 40 year
Call (405) 235-7000 Book Appointment

Profile Summary

About John D. Robertson at a glance

John D. Robertson is a business, m&a, and securities attorney based in Oklahoma City, Oklahoma, practicing at Hartzog Conger Cason. They have 40+ years of legal experience, licensed to practice since 1986. Admitted to practice in Oklahoma (1986). Educated at University of Oklahoma (J.D., 1986). Recognitions include Best Lawyers in America — Corporate Law (2026), Best Lawyers in America — Mergers and Acquisitions Law (2026), and Best Lawyers in America — Securities / Capital Markets Law (2026). Serands clients in Oklahoma City, OK and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John D. Robertson is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Mergers and Acquisitions Law and Securities / Capital Markets Law
  • John D., who practices law in Oklahoma City, Oklahoma, has been recognized since 2007
  • This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John D. is held by other top lawyers in the same geographic and legal practice area

Practice Areas Explained

John D. Robertson's Areas of Practice

Each practice area below reflects the types of cases John D. Robertson handles, with a brief overview of what that area of law covers.

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

John D. Robertson is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Oklahoma →

Mergers & Acquisitions

John D. Robertson is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in Oklahoma →

Securities Law

John D. Robertson is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in Oklahoma →

Jurisdictional Context

Why local counsel matters in Oklahoma

Practicing law in Oklahoma. Legal matters in Oklahoma are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Oklahoma City are typically filed in the local municipal court or the appropriate Oklahoma state district court, depending on subject matter and amount in controversy. An attorney licensed in Oklahoma brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Oklahoma courts without local counsel or pro hac vice admission.

Looking for additional Oklahoma attorneys? Browse all attorneys in Oklahoma City or all attorneys in Oklahoma.

Frequently Asked

Common questions about John D. Robertson

Where is John D. Robertson's law office located?
John D. Robertson's law practice is located in Oklahoma City, Oklahoma. The firm is Hartzog Conger Cason. You can contact the office directly through this profile page.
What practice areas does John D. Robertson handle?
John D. Robertson focuses on business, m&a, securities. Each practice area listed reflects experience handling cases of that type in Oklahoma.
How long has John D. Robertson practiced law?
John D. Robertson has 40+ years of legal experience and has been licensed since 1986.
Where did John D. Robertson go to law school?
John D. Robertson earned their education at (J.D., 1986).
How can I contact John D. Robertson for a consultation?
You can contact John D. Robertson directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has John D. Robertson received?
John D. Robertson's notable recognition includes: Best Lawyers in America — Corporate Law; Best Lawyers in America — Mergers and Acquisitions Law; Best Lawyers in America — Securities / Capital Markets Law; Best Lawyers in America — Special Focus:; Best Lawyers in America — General Corporate.

Education

J.D.
University of Oklahoma
- 1986

Awards

Best Lawyers in America — Corporate Law
- 2026
Best Lawyers in America — Mergers and Acquisitions Law
- 2026
Best Lawyers in America — Securities / Capital Markets Law
- 2026
Best Lawyers in America — Special Focus:
- 2026
Best Lawyers in America — General Corporate
- 2026
Best Lawyers in America — Mergers & Acquisitions
- 2026
Best Lawyers in America — Securities
- 2026
Best Lawyers in America — Transactions
- 2026
Lawyer of the Year — Securities / Capital Markets Law (Oklahoma City)
- 2023
Lawyer of the Year — Securities / Capital Markets Law (Oklahoma City)
- 2020
Lawyer of the Year — Corporate Law (Oklahoma City)
- 2018
Lawyer of the Year — Securities / Capital Markets Law (Oklahoma City)
- 2017
Lawyer of the Year — Securities / Capital Markets Law (Oklahoma City)
- 2015
Lawyer of the Year — Mergers and Acquisitions Law (Oklahoma City)
- 2014

Bar Admissions

Oklahoma
Admitted: 1986

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