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Stuart Ethan Casillas, Business Attorney in San Francisco, California

Over 27 years of legal practice · focused on Business, M&A, and Real Estate

PartneratKirkland & Ellis LLP

San Francisco, CA

Practicing business in San Francisco since 1999.

27+
Years practicing
1
Bar admission

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Quick answer

Stuart Ethan Casillas is a partner based in San Francisco, CA. The practice focuses on Business, M&A, and Real Estate. Stuart has over 27 years of legal experience. Currently practicing at Kirkland & Ellis LLP.

Based in
San Francisco, CA
Experience
over 27 years
Known for
Business · M&A · Real Estate
  • Handles Business, M&A, and Real Estate matters from San Francisco, CA.
  • Over 27 years of practice as a licensed attorney.

About Stuart Ethan Casillas: Stuart Ethan Casillas is a partner based in San Francisco, CA. The practice focuses on Business, M&A, and Real Estate. Stuart has over 27 years of legal experience. Currently practicing at Kirkland & Ellis LLP.

Areas of practice

Legal matters Stuart takes on

Stuart concentrates on business, m&a, and real estate. Each area below outlines the kind of case Stuart handles, typical outcomes to expect, and how the intake process starts.

Business cases in San Francisco, California

Stuart takes business matters in San Francisco, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Stuart agrees to represent you.

M&A cases in San Francisco, California

Stuart takes m&a matters in San Francisco, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Stuart agrees to represent you.

Real Estate cases in San Francisco, California

Stuart takes real estate matters in San Francisco, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Stuart agrees to represent you.

Biography

Meet Stuart Ethan Casillas — business lawyer in San Francisco

Stuart Ethan Casillas is a partner based in San Francisco, CA. The practice focuses on Business, M&A, and Real Estate. Stuart has over 27 years of legal experience. Currently practicing at Kirkland & Ellis LLP.

Stuart Ethan Casillas is a lawyer practicing real estate, corporate law, mergers and acquisitions and 1 other area of law. Stuart received a B.A. degree from California State University, Chico in 1996, and has been licensed for 27 years. Stuart practices at Kirkland & Ellis LLP in San Francisco, CA.

Working with Stuart on a business matter

Stuart Ethan Casillas is a lawyer practicing real estate, corporate law, mergers and acquisitions and 1 other area of law. Stuart received a B.A. degree from California State University, Chico in 1996, and has been licensed for 27 years. Stuart practices at Kirkland & Ellis LLP in San Francisco, CA.

Clients Stuart works with

Stuart reviews new inquiries case-by-case for business, m&a, and real estate matters in San Francisco and the surrounding California area.

Credentials

Education, bar admissions, and languages

  • Ohio State University Moritz College of Law

    J.D. · 1999

  • California State University, Chico

    B.A. Economics · 1996

Jurisdictions

Stuart's state bar admissions

  • California

    1999 · ACTIVE

Stuart studied at J.D. in Ohio State University Moritz College of Law and B.A. Economics in California State University, Chico.

Law school and academic background

Stuart completed J.D. in Ohio State University Moritz College of Law and B.A. Economics in California State University, Chico. Formal legal training is one signal of substantive knowledge — the day-to-day practice Stuart runs in California is where that training gets applied to real client questions.

Locations

Stuart Ethan Casillas's office in San Francisco

Stuart's primary office is at 555 California Street, San Francisco, CA, 94104. In-person meetings are by appointment; a phone intake usually comes first.

Main office

Kirkland & Ellis LLP

555 California Street

San Francisco, CA 94104

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Client feedback

Client reviews of Stuart Ethan Casillas

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Hiring guide

How to hire Stuart Ethan Casillas — what to expect in your first consultation

Working with a new business attorney should feel structured. Here's how the first two conversations with Stuart usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Stuart charges for the initial consult. That fee is credited toward representation if you retain Stuart'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; Stuart will tell you what matters and what doesn't.

Questions to ask a business attorney in San Francisco, California

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 Stuart

Stuart 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. Stuart confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Stuart'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 Stuart Ethan Casillas

  • How much does it cost to hire Stuart for a business case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Stuart walks through the likely range during the consult so there are no surprises.

  • Does Stuart offer a free consultation?

    Stuart charges for the initial consult; that fee is credited toward representation if you retain Stuart's office. Some business attorneys offer free consults — check Stuart's current terms during booking.

  • How long do business cases in California 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. Stuart gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Stuart take my case if I'm outside San Francisco?

    Stuart is licensed in California. Matters governed by California law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Stuart 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 Stuart?

    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. Stuart will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Stuart accepting new business clients right now?

    Stuart'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 San Francisco, Los Angeles and San Diego in California

Stuart handles business matters throughout California. Each city below is a direct link into the search page for verified business attorneys in that community.

More counsel

If Stuart's intake is full or the fit isn't right, these business attorneys in San Francisco handle similar matters. Every profile below is verified and open to consultations.