Sidney Sosin, Business Attorney in Chicago, Illinois
Over 76 years of legal practice · focused on Business and Securities
Chicago, IL
Practicing business in Chicago since 1950.
- 76+
- Years practicing
- 1
- Bar admission
Practices in
Are you Sidney Sosin?
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
Sidney Sosin is an attorney based in Chicago, IL. The practice focuses on Business and Securities. Sidney has over 76 years of legal experience.
- Based in
- Chicago, IL
- Experience
- over 76 years
- Known for
- Business · Securities
- Handles Business and Securities matters from Chicago, IL.
- Over 76 years of practice as a licensed attorney.
About Sidney Sosin: Sidney Sosin is an attorney based in Chicago, IL. The practice focuses on Business and Securities. Sidney has over 76 years of legal experience.
Areas of practice
Sidney's practice areas in Chicago
Sidney concentrates on business and securities. Each area below outlines the kind of case Sidney handles, typical outcomes to expect, and how the intake process starts.
Business cases in Chicago, Illinois
Sidney 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 Sidney agrees to represent you.
Securities cases in Chicago, Illinois
Sidney 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 Sidney agrees to represent you.
Biography
Sidney Sosin, business attorney serving Chicago
Sidney Sosin is an attorney based in Chicago, IL. The practice focuses on Business and Securities. Sidney has over 76 years of legal experience. Sidney works from Chicago, Illinois and takes on business matters across the region.
Sidney Sosin is a lawyer practicing securities regulation law, corporate financing law, corporate law. Sidney received a B.S. degree from University of Illinois in 1949, and has been licensed for 76 years. Sidney practices in Chicago, IL.
Sidney's approach to business cases
Sidney Sosin is a lawyer practicing securities regulation law, corporate financing law, corporate law. Sidney received a B.S. degree from University of Illinois in 1949, and has been licensed for 76 years. Sidney practices in Chicago, IL.
The kind of cases Sidney takes
Sidney reviews new inquiries case-by-case for business and securities matters in Chicago and the surrounding Illinois area.
Credentials
Credentials — where Sidney studied and practices
University of Illinois
LL.B. · 1950
University of Illinois
B.S. · 1949
Jurisdictions
Sidney's state bar admissions
Illinois
1950 · ACTIVE
Sidney studied at LL.B. in University of Illinois and B.S. in University of Illinois.
Law school and academic background
Sidney completed LL.B. in University of Illinois and B.S. in University of Illinois. Formal legal training is one signal of substantive knowledge — the day-to-day practice Sidney runs in Illinois is where that training gets applied to real client questions.
Locations
Sidney Sosin's office in Chicago
Sidney's primary office is at 180 N. La Salle St., Chicago, IL, 60601. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Sidney Sosin
Sidney has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
No reviews yet
Only verified clients who have consulted with Sidney Sosin can leave a review.
Schedule your consultationHiring guide
How to hire Sidney Sosin — what to expect in your first consultation
Working with a new business attorney should feel structured. Here's how the first two conversations with Sidney usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Sidney charges for the initial consult. That fee is credited toward representation if you retain Sidney'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; Sidney 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 Sidney
Sidney 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. Sidney confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Sidney'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 Sidney Sosin
How much does it cost to hire Sidney for a business case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Sidney walks through the likely range during the consult so there are no surprises.
Does Sidney offer a free consultation?
Sidney charges for the initial consult; that fee is credited toward representation if you retain Sidney's office. Some business attorneys offer free consults — check Sidney'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. Sidney gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Sidney take my case if I'm outside Chicago?
Sidney 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 — Sidney 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 Sidney?
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. Sidney will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Sidney accepting new business clients right now?
Sidney'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
Sidney 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 Sidney'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.





