Hayden Ryan & Ciullo

About us

Hayden Ryan & Ciullo was founded by three longtime partners who have successfully litigated complex commercial disputes together for years. We built our practices representing sophisticated clients in high-stakes matters where judgment, preparation, and experience determine outcomes. Working side-by-side shaped a shared view of effective advocacy. Results turn on partner-level involvement, disciplined strategy, and accountability. We built this firm around that conviction.

Kent J. Hayden

Partner / Litigation

Brendan E. Ryan

Partner / Litigation

Zachary A. Ciullo

Partner / Litigation

Experience & Trial Readiness

We litigate complex commercial disputes across industries and forums, handling matters from demand letter through appeal. We prepare each case as if it will be tried while strategically developing the most efficient outcome for our clients.

Our trial-focused approach sharpens issues early, informs strategic decisions, and strengthens leverage throughout the case. This discipline guides our approach to motion practice, settlement strategy, and trial preparation alike.

Our Structure

Hayden Ryan & Ciullo is a litigation boutique by design. We built the firm to support how sophisticated disputes are actually won: through experienced lawyers working closely with clients with the flexibility to tailor strategy, staffing, and resources to the matter at hand.

Our structure allows us to assemble teams deliberately, scale thoughtfully, and adapt as cases evolve. This structure aligns us with our clients’ objectives, risk tolerance, and business priorities by allocating resources where they matter most. We efficiently deliver elite advocacy without compromising rigor, judgment, or quality.

Relationships & Counsel

Clients work directly with the partners responsible for their matters. We remain closely involved at every stage of litigation, ensuring continuity, responsiveness, and informed decision-making from start to finish.

We view litigation as a collaborative effort. Our role is not only to advocate, but to advise—bringing candid judgment, commercial perspective, and steady counsel to complex issues. We invest in long-term relationships grounded in trust, honesty, and a deep understanding of our clients’ businesses and priorities.