Sebastian Marquez

Sebastian Marquez, RPLU has extensive experience across lawyers professional liability, management liability, technology E&O, and specialty lines. He brings a strong background in underwriting, sales leadership, and relationship management, with a focus on delivering practical, solution-oriented coverage strategies.

Sebastian has advised and underwritten for law firms and professional service clients nationwide and has held senior roles with leading carriers and brokers, including Wright National Flood Insurance, USI Affinity, AIG, Seneca Insurance Company, Bertholon Rowland, and Travelers Insurance. He has also developed and presented CE-eligible loss control programs at state bar conferences.

He holds a B.S. in Business/E-Business, has maintained the Registered Professional Liability Underwriter (RPLU) designation since 2006, and is licensed in multiple states.

 

Head of Claims

Brooke is responsible for managing the claims process across the entire global MGU, and acts as a conduit between the Lead Underwriters and EmergIn to advise on underwriting intent and represent our position within the claims adjusting process. She joined Emergin in 2022, and has played a critical role in drafting the new ConvergIn Risk Media Solutions Policy, as well as centralizing the management and organization of claims within EmergIn. Additionally, she provides legal and practical oversight and review with respect to coverage determinations, policy language, and application of same within the marketplace.

Prior to joining EmergIn, Brooke practiced insurance law as a general liability litigator, coverage counsel, and data privacy/breach response counsel at various law firms located in New York City. Additionally, she worked as a claims adjuster, claims counsel, and data privacy/intellectual property manager for Rockville Risk Management, a third-party administrator. This provided her with extensive experience in claims adjusting/management, coverage disputes, policy interpretations and wordings, coverage position drafting, and efficient resolution of claims.

Brooke has a B.A. in U.S. History and a J.D. She has been a member of the New York State Bar since 2009.

President

Richard is President of Celerity Risk, joining Ryan Specialty Underwriting Managers in 2024 as part of its acquisition of Innovisk Capital Partners. Richard is a former corporate lawyer who joined the M&A insurance market as a broker in 2008. Since becoming an M&A underwriter in the financial lines division of a global insurer in 2010, Richard has held various senior leadership positions within the insurance market. Partnering with Innovisk, Richard launched Themis in 2019, which he ran successfully for six years prior to joining Ryan Specialty.

Chief Underwriting Officer / Chief Operations Officer

Bringing over 20 years of management and professional liability underwriting expertise, Patrick Mitchell joined Celerity Risk (formerly CorRisk Solutions) in 2024. He began his career at AIG, rising to various leadership positions including managing AIG’s SME Financial Lines team and portfolio in 2014. Patrick became the Management Liability Product Head for Hiscox USA in 2016, developing and launching a new policy form and innovative rate plan. In 2019, he joined Coalition, Inc. as the Executive Risks Lead, securing carrier partnerships and building and launching a best-in-class broker portal and underwriting system.

Head of Strategic Initiatives

Mallory joined Celerity Risk (formerly CorRisk Solutions) in 2024.
Mallory began her career on the broker side in construction, where she managed consolidated wrap-up insurance programs for (inter)national general contractors and project owners. There, she handled multiple lines of coverage including Workers Compensation, General Liability, Auto Liability, Excess/Umbrella Liability, Professional Liability, and Contractor’s Pollution/Environmental Liability.

After her time at Alliant, Mallory transitioned to the carrier side by joining Arch Insurance’s Miscellaneous Professional Liability – Large Business Group. There, she specialized in underwriting Miscellaneous Professional Liability, Cyber Liability, Media Liability, and Technology E&O for entities with $500M-$2B+ in revenue.

Mallory then served as Program Underwriting Manager for Allied World’s North American Programs Division. While managing national multi-line programs and playing a key role in onboarding new programs, Mallory worked with over a dozen P&C lines of business, such as those tailored for auto dealers, security guards, contractors, financial entities, and restaurant franchises.

Since starting in the industry, Mallory has earned her CPCU, RPLU, ARM, ARe, and CRIS.

Chief Executive Officer

At Celerity Risk, Jamie leads the charge on strategy, policy and governance and acts as the capstone underwriter for all risks. Prior to his role within Celerity Risk (formerly CorRisk Solutions), Jamie launched EmergIn Risk London in 2015 after leading various cyber, technology, and media departments across CFC Underwriting and AIG.