The firm.
The practice.
The approach.
Why KSA Law Exists
A practice built around your business, not just your legal matters.
"Most legal problems are business problems first. We built KSA Law around that premise."
KSA LAW was founded on a straightforward observation: legal risk doesn’t arrive in discrete, isolated events. It builds across the life of a business — through the agreements you sign, the relationships you establish, the coverage structures you rely on, and the disputes that emerge when any of those break down.
Most businesses engage outside counsel reactively — matter by matter, attorney by attorney — without a consistent advisor who understands the full exposure picture. By the time a problem reaches a lawyer, leverage has often already been lost, terms have already been signed, and options have already narrowed.
KSA LAW is built to be a different kind of legal partner. We are present across transactions, operations, and disputes — with the institutional knowledge to connect the dots that specialist counsel often misses and the business orientation to keep legal strategy aligned with your actual objectives.
We bring the discipline and depth of large-firm practice to the work that matters most — without the overhead, the billing inefficiency, or the distance that often separates large-firm counsel from the businesses they serve. Our clients are our partners. Their goals are our objectives.
Principal & Founder
Kelly Sullivan Angles
Principal · KSA Law LLC
Kelly Sullivan Angles is the founder of KSA Law LLC and a transactional attorney whose practice spans business transactions, fractional general counsel services, and insurance matters. She founded KSA Law to deliver the depth and discipline of large-firm practice in a structure built for the way growth-stage businesses actually operate — with direct access to senior counsel, clear deliverables, and legal strategy oriented toward business outcomes.
Across every engagement, Kelly’s approach is consistent: begin with the client’s business objective, identify the real risk and leverage dynamics, and structure legal strategy to serve the outcome — not the other way around.
Kelly brings extensive experience advising businesses across the full transactional lifecycle:
- Organizational formation and governance
- Commercial contracting
- Strategic acquisitions
- Exit
Her background includes significant representation of insurance industry participants:
- Insurers
- Reinsurers
- Insurance agencies
- Captive arrangements
Her transactional experience includes:
- Complex M&A transactions, including a $48 million merger involving a NYSE-listed acquirer
- Multi-jurisdictional insurance company formations and acquisitions
- Barbados captive reinsurance arrangements for institutional investors
Kelly’s insurance regulatory background includes advisory work with the Missouri Department of Commerce and Insurance on:
- Insurer financial condition matters
- Insolvency matters
This reflects a depth of regulatory knowledge few transactional practitioners carry. Her practice has been recognized by Chambers USA at Band 2 in Missouri Insurance for five consecutive years — a distinction reflecting consistent peer and client recognition at the highest level of the state’s insurance law bar.
Chambers USA · Band 2
Missouri — Insurance · 2020–2024
Women's Justice Award
Missouri Lawyers Media · Transactional Practitioner
Areas of Practice
Business Transactions & Commercial Contracts
Mergers & Acquisitions
Corporate Formation & Governance
Fractional General Counsel
Insurance Regulatory & Transactions
Reinsurance & Alternative Risk
Securities Law Considerations
Professional Affiliations
Missouri Bar Association
Kansas Bar Association
Kansas City Metropolitan Bar Association
Catholic Bar Association
Association of Governmental Risk Pools
Education
J.D., University of Missouri–Kansas City
M.A., Samuel Merritt University
B.S., University of Kansas
Licensure
Missouri
Kansas
Hunter Roberts
Associate · KSA Law LLC
Hunter Roberts is a junior associate attorney with KSA Law, where he supports the firm’s corporate, transactional, and regulatory practice areas. He works with businesses and individuals to navigate complex legal matters, providing practical, solutions-oriented counsel across a range of industries.
Hunter’s practice focuses on business transactions & commercial contracts, mergers & acquisitions, corporate formation & governance, and fractional general counsel. He has experience supporting multi-state operations, including entity formation, licensing, and risk management.
Prior to joining KSA Law, Hunter served as Associate General Counsel for a multi-state company, where he advised on corporate, transactional, and regulatory matters.
Hunter earned his Juris Doctor from the University of Missouri–Kansas City School of Law, where he was a staff member of the UMKC Law Review and focused his studies in business and entrepreneurial law. He received his undergraduate degree from Baker University.
Areas of Practice
Business Transactions & Commercial Contracts
Mergers & Acquisitions
Corporate Formation & Governance
Insurance Regulatory & Transactions
Reinsurance & Alternative Risk
Securities Law Considerations
Education
J.D., University of Missouri–Kansas City
B.A., Baker University
Licensure
Missouri
Kansas
Brian Boos
Senior Counsel · KSA Law LLC
Brian Boos is a trial attorney and Senior Counsel at KSA Law LLC with nearly four decades of experience in insurance law and complex civil litigation. He brings a deep bench of institutional knowledge and trial expertise to the firm’s insurance and professional liability practices.
Across every engagement, Brian’s approach is consistent: thoroughly understand the client’s business objectives and risk landscape, develop a clear and practical strategy, and deliver persistent, results-oriented advocacy — whether in the courtroom or at the negotiating table.
Brian brings extensive trial and litigation experience, including:
- More than 100 jury trials tried to verdict as lead counsel
- High-stakes insurance coverage, professional liability, and commercial disputes
- Significant trial and appellate work in transportation, healthcare, and product liability matters
His background includes:
- 17 years at a prominent regional defense firm
- In-house insurance industry experience that informs how carriers and claimants evaluate risk
- Deep knowledge of insurance rules, regulations, and the evolving insurance marketplace
Brian has been repeatedly recognized for his trial skills and professionalism, including:
- Selected for inclusion in The Best Lawyers in America® in seven practice areas: Commercial Litigation, Litigation – Insurance, Insurance Law, Medical Malpractice Law – Defendants, Personal Injury Litigation – Defendants, Product Liability Litigation – Defendants, and Professional Malpractice Law – Defendants
- Fellow of the Litigation Counsel of America (invitation-only, limited to 3,500 lawyers nationwide)
- Member of the American Board of Trial Advocates (ABOTA), one of only 90 members in the Missouri and Kansas Chapter
- AV Preeminent® Rating from Martindale-Hubbell, the highest peer rating for professional excellence and ethical standards
This depth of courtroom experience and strategic insight allows Brian to provide senior-level guidance that aligns with KSA Law’s core philosophy: delivering logical, persistent, and no-nonsense legal strategy that serves the client’s broader business objectives. He earned his Juris Doctor from Washburn University School of Law.
Areas of Practice
Insurance Law & Litigation
Professional Liability
Transportation & Trucking
Healthcare Litigation
Commercial Disputes
Education
J.D., Washburn University School of Law
B.A., Missouri Western State University
Licensure
Missouri
Kansas
Christal Tamargo
Litigation Specialist
Emma Sansom
Executive Assistant
How the Firm Is Built
Boutique by design.
Not by limitation.
01
Direct Access to Senior Counsel
Every engagement is led by Kelly directly. There are no junior attorneys running your matter while a partner’s name appears on the letterhead. You work with the lawyer you hired, from kickoff to close.
02
Engagement Models That Fit Your Business
KSA Law offers project-based, retainer, and fractional general counsel engagements — structured to match the way your business actually uses legal services, not around a billable hour model designed for a different era.
03
Integrated Practice, Not Siloed Specialists
Because KSA Law advises across transactions, ongoing operations, and insurance matters, we carry context across the full arc of your business. The deal we close with you today informs the counsel we give you tomorrow.
What Sets KSA Law Apart
Four reasons clients choose a practice built this way.
These aren’t marketing points. They’re the structural decisions we made when building the firm — and the reasons our clients engage us as a long-term partner, not a one-time vendor.
01
Business-first advice grounded in risk and leverage
We begin every engagement by understanding your business objective — not by categorizing your legal problem. Risk allocation and leverage preservation are the lens through which we evaluate every contract, every structure, and every strategy.
02
Large-firm depth without large-firm overhead
The experience behind KSA Law’s practice was built handling sophisticated transactions and regulatory matters at the highest level of the Missouri insurance and corporate bar. That depth doesn’t go away because the firm is smaller — it’s just delivered more efficiently.
03
Both sides of the coverage table
Significant experience on the insurer and defense side gives KSA Law an uncommon perspective on insurance matters — we understand how claims are evaluated, how reserves are set, and where the real leverage lies. That knowledge changes the strategy.
04
Present across the full business lifecycle
From organizational formation through commercial operations, growth transactions, and dispute resolution — KSA Law is built to be a consistent legal partner across every stage, not a specialist you call once and don’t hear from again.
Professional Involvement
Active in the communities she serves.
Co-Founder, Leadership in Focus Together (LIFT KC)
Kansas City Tomorrow — The Civic Council of Greater Kansas City
Civic Council State Advocacy Leadership Group
Plaza Area Council, Board Member
Women's Public Service Network
Kelly’s professional involvement reflects the same orientation that defines her practice: an active role in the business, civic, and legal communities where her clients operate. Civic leadership isn’t separate from the work — it deepens the context that makes legal advice genuinely useful.
Understanding the regulatory landscape, the capital environment, and the professional networks that shape how businesses grow is part of what it means to be a trusted advisor. That perspective doesn’t come from reading about an industry — it comes from being part of it.
Work With Us
Ready to talk about your business?
Every engagement starts with a conversation about where your business is, where it’s going, and what’s standing in the way. No forms. No intake questionnaires. Just a direct conversation.
