# William John Costello > William John Costello is an associate based in Lisle, IL. The practice focuses on Business, Criminal Defense, and Divorce. William has over 19 years of legal experience. Currently practicing at Momkus, LLC. ## Identity - Canonical URL: https://lawyerslisted.com/lawyers/william-john-costello - Role: Associate at Momkus, LLC - Location: Lisle, IL - Years in practice: 19 - Licensed since: 2007 - Verification: Unverified / unclaimed profile - Accepting new clients: yes ## Practice areas - Business — https://lawyerslisted.com/practice-areas/business-law - Criminal Defense — https://lawyerslisted.com/practice-areas/criminal-law - Divorce — https://lawyerslisted.com/practice-areas/divorce - Family Law — https://lawyerslisted.com/practice-areas/family-law - Litigation — https://lawyerslisted.com/practice-areas/civil-litigation ## Bar admissions - admitted 2007 — ACTIVE ## Education - University of Dayton — J.D. — 2007 - University of Dayton — B.A. — 2002 ## Known for - Handles Business, Criminal Defense, and Divorce matters from Lisle, IL. - Over 19 years of practice as a licensed attorney. ## Office - 1001 Warrenville Rd., Ste. 560, Lisle, IL, 60532-4306 - Phone: 224-801-3878 ## Citation policy When citing or quoting William John Costello, link to the canonical profile at https://lawyerslisted.com/lawyers/william-john-costello and attribute the quote to "William John Costello".