Atty. Peter Constantine Sullivan
Peter Constantine Sullivan is a lawyer practicing business & corporate, health care, mergers & acquisitions and 3 other areas of law. Peter received a B.A. degree from State University of New York at Buffalo in 2008, and has been licensed for 15 years.
Business & Corporate & More Attorney · Serving St. Louis, MO · 15+ Years Experience
Profile Summary
About Peter Constantine Sullivan at a Glance
Peter Constantine Sullivan is a Member based in St. Louis, Missouri, practicing at Lashly & Baer, P.C.. They have 15+ years of legal experience, licensed to practice since 2011. Their practice focuses on formation, business, real estate, m&a, and securities. Admitted to practice in Missouri United States District Court, Eastern District of Missouri United States District Court, Co (2011) and Illinois (2017). Educated at Western Michigan University (J.D. Journal, 2011) and State University of New York at Buffalo (B.A., 2008). Serves clients in St. Louis, MO and the surrounding metropolitan area.
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About Peter Constantine Sullivan
- Peter Constantine Sullivan is a lawyer practicing business & corporate, health care, mergers & acquisitions and 3 other areas of law
- Peter received a B.A. degree from State University of New York at Buffalo in 2008, and has been licensed for 15 years
- Peter practices at Lashly & Baer, P.C. in St. Louis, MO
Practice Areas Explained
Peter Constantine Sullivan's Areas of Legal Practice
Each practice area below reflects the types of cases Peter Constantine Sullivan handles, with a practical overview of what that area of law involves and how it may apply to your situation in St. Louis.
Business Formation in St. Louis
Peter Constantine Sullivan is one of 35,326 formation attorneys indexed nationally. Browse formation attorneys in Missouri →
Business & Corporate Law in St. Louis
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Peter Constantine Sullivan is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Missouri →
Real Estate Law in St. Louis
Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.
Peter Constantine Sullivan is one of 313,729 real estate attorneys indexed nationally. Browse real estate attorneys in Missouri →
Mergers & Acquisitions in St. Louis
Peter Constantine Sullivan is one of 49,430 m&a attorneys indexed nationally. Browse m&a attorneys in Missouri →
Securities Law in St. Louis
Peter Constantine Sullivan is one of 64,075 securities attorneys indexed nationally. Browse securities attorneys in Missouri →
Jurisdictional Context
Why Local Counsel Matters in St. Louis
Practicing law in Missouri. Legal matters in Missouri are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in St. Louis are typically filed in the local municipal court or the appropriate Missouri state district court, depending on subject matter and amount in controversy. An attorney licensed in Missouri 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 Missouri courts without local counsel or pro hac vice admission.
St. Louis Courts and Legal Process
Choosing a St. Louis-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 Missouri attorneys? Browse all attorneys in St. Louis or all attorneys in Missouri.
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Professional Profile
Why Clients in St. Louis Choose Peter Constantine Sullivan
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 Peter Constantine Sullivan's practice in the field of formation, business, real estate, m&a, and securities.
Decade-Tested Legal Experience
Peter Constantine Sullivan brings 15+ 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 Missouri United States District Court, Eastern District of Missouri United States District Court, Co and Illinois, Peter Constantine Sullivan can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Broad Practice Area Coverage
Covering formation, business, and real estate, Peter Constantine Sullivan can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
Local Presence in St. Louis
A St. Louis-based practice means Peter Constantine Sullivan 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 Peter Constantine Sullivan Handles in St. Louis
Below is a representative sample of the types of matters Peter Constantine Sullivan has experience with under Missouri 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 Peter Constantine Sullivan directly to discuss the specifics of your situation.
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How People Find Peter Constantine Sullivan Online
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Peter Constantine Sullivan's Practice Areas & Specializations
Education & Law School Background
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