Atty. David Mark Katz
David Mark Katz is a lawyer practicing investment funds, advisers and derivatives, securities and futures regulatory, broker-dealer and 8 other areas of law. David Mark received a M.A. degree from Columbia University in 2002, and has been licensed for 42 years.
Broker Dealer & More Attorney · Serving New York, NY · 42+ Years Experience
Profile Summary
About David Mark Katz at a Glance
David Mark Katz is a Partner based in New York, New York, practicing at Sidley Austin LLP. They have 42+ years of legal experience, licensed to practice since 1984. Their practice focuses on employment, business, and securities. Admitted to practice in New York (1984), New Jersey (1984), District of Columbia (1984), and U.S. District Court, District of New Jersey and U.S. District Court, Southern and Eastern Districts (1984). Educated at Columbia University (M.A. Lehigh, 2002) and New York Law School (J.D., 1983). Serves clients in New York, NY and the surrounding metropolitan area.
Get Legal Help from David Mark Katz in New York
Sign up free and choose one of the two methods below.
Have a legal question? Sign up free, submit it through the Ask the Attorney module and receive a focused answer from a specialist.
- Free to ask a question
- Answers from specialist attorneys
- Optional private / anonymous question
Request an online video meeting or an in-person consultation at the attorney's office. Pick a time that works for you and share the details securely.
- Online video meeting
- In-person at the attorney's office
- Secure messaging and payment
About David Mark Katz
- David Mark Katz is a lawyer practicing investment funds, advisers and derivatives, securities and futures regulatory, broker-dealer and 8 other areas of law
- David Mark received a M.A. degree from Columbia University in 2002, and has been licensed for 42 years
- David Mark practices at Sidley Austin LLP in New York, NY
Practice Areas Explained
David Mark Katz's Areas of Legal Practice
Each practice area below reflects the types of cases David Mark Katz handles, with a practical overview of what that area of law involves and how it may apply to your situation in New York.
Employment Law in New York
Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.
David Mark Katz is one of 167,770 employment attorneys indexed nationally. Browse employment attorneys in New York →
Business & Corporate Law in New York
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
David Mark Katz is one of 497,491 business attorneys indexed nationally. Browse business attorneys in New York →
Securities Law in New York
David Mark Katz is one of 64,075 securities attorneys indexed nationally. Browse securities attorneys in New York →
Jurisdictional Context
Why Local Counsel Matters in New York
Practicing law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in New York are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York 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 New York courts without local counsel or pro hac vice admission.
New York Courts and Legal Process
Choosing a New York-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.
Looking for additional New York attorneys? Browse all attorneys in New York or all attorneys in New York.
Frequently Asked
Common Questions About David Mark Katz
Where is David Mark Katz's law office located?
What practice areas does David Mark Katz handle?
How long has David Mark Katz practiced law?
Where did David Mark Katz go to law school?
How can I contact David Mark Katz for a consultation?
Professional Profile
Why Clients in New York Choose David Mark Katz
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish David Mark Katz's practice in the field of employment, business, and securities.
Decade-Tested Legal Experience
David Mark Katz brings 42+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in New York, New Jersey, and District of Columbia, David Mark Katz can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering employment, business, and securities, David Mark Katz can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in New York
A New York-based practice means David Mark Katz attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.
Case Types
Common Legal Issues David Mark Katz Handles in New York
Below is a representative sample of the types of matters David Mark Katz has experience with under New York law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.
This list is illustrative, not exhaustive. Contact David Mark Katz directly to discuss the specifics of your situation.
Search Reference
How People Find David Mark Katz Online
Prospective clients searching for legal help in New York commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like David Mark Katz.
If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with David Mark Katz directly.
David Mark Katz's Practice Areas & Specializations
Education & Law School Background
Bar Admissions & Licensed Jurisdictions
Client Reviews & Ratings — David Mark Katz
No reviews yet.