
Jerold Nathan Siegan, Business Attorney in Chicago, Illinois
Over 54 years of legal practice · focused on Business, M&A, and Securities · 5.0/5 rating from 1 verified client review
PartneratArnstein & Lehr LLP
Chicago, IL
Practicing business in Chicago since 1972.
- 54+
- Years practicing
- 5.0 ★
- 1 client review
- 4
- Bar admissions
Practices in
Are you Jerold Nathan Siegan?
This profile was built from public bar records and is still unclaimed. Claim it free to control your photo, bio, and fees — and get client inquiries sent straight to you.
Quick answer
Jerold Nathan Siegan is a partner based in Chicago, IL. The practice focuses on Business, M&A, and Securities. Jerold has over 54 years of legal experience. Currently practicing at Arnstein & Lehr LLP. Rated 5.0 out of 5 from 1 client review.
- Based in
- Chicago, IL
- Experience
- over 54 years
- Known for
- Business · M&A · Securities
- Handles Business, M&A, and Securities matters from Chicago, IL.
- Over 54 years of practice as a licensed attorney.
- Recognized with AV Preeminent.
About Jerold Nathan Siegan: Jerold Nathan Siegan is a partner based in Chicago, IL. The practice focuses on Business, M&A, and Securities. Jerold has over 54 years of legal experience. Currently practicing at Arnstein & Lehr LLP. Rated 5.0 out of 5 from 1 client review.
Areas of practice
Legal matters Jerold takes on
Jerold concentrates on business, m&a, securities, and consumer. Each area below outlines the kind of case Jerold handles, typical outcomes to expect, and how the intake process starts.
Business
View other Business attorneys
M&A
View other M&A attorneys
Securities
View other Securities attorneys
Consumer
View other Consumer attorneys
Business cases in Chicago, Illinois
Jerold takes business matters in Chicago, Illinois. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jerold agrees to represent you.
M&A cases in Chicago, Illinois
Jerold takes m&a matters in Chicago, Illinois. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jerold agrees to represent you.
Securities cases in Chicago, Illinois
Jerold takes securities matters in Chicago, Illinois. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jerold agrees to represent you.
Consumer cases in Chicago, Illinois
Jerold takes consumer matters in Chicago, Illinois. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jerold agrees to represent you.
Biography
Meet Jerold Nathan Siegan — business lawyer in Chicago
Jerold Nathan Siegan is a partner based in Chicago, IL. The practice focuses on Business, M&A, and Securities. Jerold has over 54 years of legal experience. Currently practicing at Arnstein & Lehr LLP. Rated 5.0 out of 5 from 1 client review.
Jerold Nathan Siegan is a lawyer practicing securities, corporate, business and 2 other areas of law. Jerold received a B.A. degree from University of Illinois in 1968, and has been licensed for 54 years. Jerold practices at Arnstein & Lehr LLP in Chicago, IL.
How Jerold handles business matters
Jerold Nathan Siegan is a lawyer practicing securities, corporate, business and 2 other areas of law. Jerold received a B.A. degree from University of Illinois in 1968, and has been licensed for 54 years. Jerold practices at Arnstein & Lehr LLP in Chicago, IL.
Who Jerold represents
Jerold reviews new inquiries case-by-case for business, m&a, and securities matters in Chicago and the surrounding Illinois area.
Credentials
Education, bar admissions, and languages
DePaul University
J.D. · 1972
University of Illinois
B.A. · 1968
Jurisdictions
Jerold's state bar admissions
District of Columbia
1973 · ACTIVE
Illinois
1972 · ACTIVE
U.S. District Court,
1972 · ACTIVE
U.S. Court of Appeal
1972 · ACTIVE
Jerold studied at J.D. in DePaul University and B.A. in University of Illinois.
Law school and academic background
Jerold completed J.D. in DePaul University and B.A. in University of Illinois. Formal legal training is one signal of substantive knowledge — the day-to-day practice Jerold runs in Illinois is where that training gets applied to real client questions.
Recognition
Recognition and thought leadership
Jerold has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
AV Preeminent
Legal awards and honors
AV Preeminent.
Locations
Jerold Nathan Siegan's office in Chicago
Jerold's primary office is at 120 South Riverside Plaza, Suite 1200, Chicago, IL, 60606-3910. In-person meetings are by appointment; a phone intake usually comes first.
Arnstein & Lehr LLP
120 South Riverside Plaza, Suite 1200
Chicago, IL 60606-3910
Open in Google MapsClient feedback
Client reviews of Jerold Nathan Siegan — 5.0/5 rating from 1 verified client review
Every review below is from a verified client of Jerold. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing business attorneys in Chicago.
5.0
1 client review
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Jerold Nathan Siegan claims this profile.
Read all reviewsHiring guide
How to hire Jerold Nathan Siegan — what to expect in your first consultation
Working with a new business attorney should feel structured. Here's how the first two conversations with Jerold usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Jerold charges for the initial consult. That fee is credited toward representation if you retain Jerold's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Jerold will tell you what matters and what doesn't.
Questions to ask a business attorney in Chicago, Illinois
A short list to run through before you commit: How many business matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Jerold
Jerold discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every business matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Jerold confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Jerold's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many business practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Jerold Nathan Siegan
How much does it cost to hire Jerold for a business case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Jerold walks through the likely range during the consult so there are no surprises.
Does Jerold offer a free consultation?
Jerold charges for the initial consult; that fee is credited toward representation if you retain Jerold's office. Some business attorneys offer free consults — check Jerold's current terms during booking.
How long do business cases in Illinois typically take?
Simple business matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Jerold gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Jerold take my case if I'm outside Chicago?
Jerold is licensed in Illinois. Matters governed by Illinois law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Jerold will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Jerold?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Jerold will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Jerold accepting new business clients right now?
Jerold's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Business attorneys serving Chicago, Springfield and Northbrook in Illinois
Jerold handles business matters throughout Illinois. Each city below is a direct link into the search page for verified business attorneys in that community.
More counsel
Other top-rated business attorneys in Illinois
If Jerold's intake is full or the fit isn't right, these business attorneys in Chicago handle similar matters. Every profile below is verified and open to consultations.





