Atty. Mark David Werner

Atty. Mark David Werner

Mark David Werner is a lawyer practicing banking, financial markets and services, global finance and 8 other areas of law. Mark received a B.S. degree from University of Illinois in 1999, and has been licensed for 24 years.

Chicago Chicago 24 Years Experience 24 year
Call (412) 397-7278

Profile Summary

About Mark David Werner at a glance

Mark David Werner is a Partner based in Chicago, Illinois, practicing at Sidley Austin LLP. They have 24+ years of legal experience, licensed to practice since 2002. Their practice focuses on business and securities. Admitted to practice in Illinois (2002). Educated at University of Virginia School of Law (J.D., 2002) and University of Illinois (B.S., 1999). Serves clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark David Werner is a lawyer practicing banking, financial markets and services, global finance and 8 other areas of law
  • Mark received a B.S. degree from University of Illinois in 1999, and has been licensed for 24 years
  • Mark practices at Sidley Austin LLP in Chicago, IL

Practice Areas Explained

Mark David Werner's Areas of Practice

Each practice area below reflects the types of cases Mark David Werner 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.

Mark David Werner is one of 452,854 business attorneys indexed nationally. Browse business attorneys in Illinois →

Securities Law

Mark David Werner is one of 58,852 securities attorneys indexed nationally. Browse securities attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

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

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about Mark David Werner

Where is Mark David Werner's law office located?
Mark David Werner's law practice is located in Chicago, Illinois. The firm is Sidley Austin LLP. You can contact the office directly through this profile page.
What practice areas does Mark David Werner handle?
Mark David Werner focuses on business, securities. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Mark David Werner practiced law?
Mark David Werner has 24+ years of legal experience and has been licensed since 2002.
Where did Mark David Werner go to law school?
Mark David Werner earned their education at (J.D., 2002); (B.S., 1999).
How can I contact Mark David Werner for a consultation?
You can contact Mark David Werner 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.

Education

J.D.
University of Virginia School of Law
- 2002
B.S.
University of Illinois
- 1999

Bar Admissions

Illinois
Admitted: 2002

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