Atty. John A. Weissenbach

Atty. John A. Weissenbach

John A. Weissenbach is a lawyer practicing business, mergers, acquisitions and divestitures, venture capital and 5 other areas of law.

Los Angeles Los Angeles 46 yrs experience 46 year
Call (213) 823-2495 Book Appointment

Profile Summary

About John A. Weissenbach at a glance

John A. Weissenbach is a Partner based in Los Angeles, California, practicing at Kirkland And Ellis Llp. They have 46+ years of legal experience, licensed to practice since 1980. Their practice focuses on business, m&a, and securities. Admitted to practice in Illinois (1980), Massachusetts (2004), and California (2006). Educated at Harvard University (J.D., 1980) and Princeton University (A.B., 1977). Active member of State Bar of California. Serands clients in Los Angeles, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • John A. Weissenbach is a lawyer practicing business, mergers, acquisitions and divestitures, venture capital and 5 other areas of law
  • John received a A.B. degree from Princeton University in 1977, and has been licensed for 46 years
  • John practices at Kirkland & Ellis LLP in Los Angeles, CA

Practice Areas Explained

John A. Weissenbach's Areas of Practice

Each practice area below reflects the types of cases John A. Weissenbach 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 A. Weissenbach is one of 501,317 business attorneys indexed nationally. Browse business attorneys in California →

Mergers & Acquisitions

John A. Weissenbach is one of 49,731 m&a attorneys indexed nationally. Browse m&a attorneys in California →

Securities Law

John A. Weissenbach is one of 64,529 securities attorneys indexed nationally. Browse securities attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Los Angeles are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California 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 California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in Los Angeles or all attorneys in California.

Frequently Asked

Common questions about John A. Weissenbach

Where is John A. Weissenbach's law office located?
John A. Weissenbach's law practice is located in Los Angeles, California. The firm is Kirkland And Ellis Llp. You can contact the office directly through this profile page.
What practice areas does John A. Weissenbach handle?
John A. Weissenbach focuses on business, m&a, securities. Each practice area listed reflects experience handling cases of that type in California.
How long has John A. Weissenbach practiced law?
John A. Weissenbach has 46+ years of legal experience and has been licensed since 1980.
Where did John A. Weissenbach go to law school?
John A. Weissenbach earned their education at (J.D., 1980); (A.B., 1977).
How can I contact John A. Weissenbach for a consultation?
You can contact John A. Weissenbach 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.
Harvard University
- 1980
A.B.
Princeton University
- 1977

Bar Admissions

Illinois
Admitted: 1980
Massachusetts
Admitted: 2004
California
Admitted: 2006

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