Our Team

Our transatlantic team of specialists stands apart due to our diverse skillset. Our breadth of experience includes backgrounds in law, engineering, risk management, broking, government, and IT.

Our diligent team believes in table-top underwriting and the careful dissection of each risk. Coverage and prices are crafted based on the merits of the client's exposure and are not dedicated by obstinate ratings or automated systems.

Leadership

Tom Nash

Co-President, Head of Professional Liability
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Carl Pursiano

Co-President, Head of Management Liability
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Patrick Mitchell

Chief Underwriting & Operations Officer
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Mallory Harvey

Head of Strategic Initiatives
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Angela Buenning

Media Liability Product Lead
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Darren Racine

Architects & Engineers Product Lead
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Jennifer Mayer

Professional Lines Product Lead
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Ryan Kratz

US Practice Lead, Cyber & Technology
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Simon White

Director of Wholesale Cyber & Technology
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Amit Davè

VP - Head of U.S. Wholesale Distribution
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Mio Rubirosa-Luciano

Underwriting Operations Associate
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Underwriting

Christine Brewington

Senior Underwriter
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Stephanie Castillo

Underwriting Assistant
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Danielle Cordeau

Senior Underwriting Lead
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Travis Klipera

Assistant Vice President
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Nicole Simmons

Assistant Vice President
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About
Our Team
Offerings
Claims
Contact

©2025 Ryan Specialty, LLC | Privacy Notice | Legal

Any carrier ratings contained herein are as of 2/25/25. AM Best ratings are under continual review and subject to change or affirmation. To confirm the current rating, please visit www.ambest.com.

Celerity Risk is a series of RSG Underwriting Managers, LLC, a Delaware limited liability company based in Illinois. RSG Underwriting Managers, LLC is a subsidiary of Ryan Specialty, LLC. Celerity Risk works directly with brokers, agents and insurance carriers, and as such does not solicit insurance from the public. Some products may only be available in certain states, and some products may only be available from surplus lines insurers. In California: RSG Insurance Services, LLC (License #0E50879). ©2025 Ryan Specialty, LLC
Our Team

Our transatlantic team of specialists stands apart due to our diverse skillset. Our breadth of experience includes backgrounds in law, engineering, risk management, broking, government, and IT.

Our diligent team believes in table-top underwriting and the careful dissection of each risk. Coverage and prices are crafted based on the merits of the client's exposure and are not dedicated by obstinate ratings or automated systems.

Leadership

Tom Nash

Co-President, Head of Professional Liability
Read Bio

Carl Pursiano

Co-President, Head of Management Liability
Read Bio

Patrick Mitchell

Chief Underwriting & Operations Officer
Read Bio

Mallory Harvey

Head of Strategic Initiatives
Read Bio

Angela Buenning

Media Liability Product Lead
Read Bio

Darren Racine

Architects & Engineers Product Lead
Read Bio

Jennifer Mayer

Professional Lines Product Lead
Read Bio

Ryan Kratz

US Practice Lead, Cyber & Technology
Read Bio

Simon White

Director of Wholesale Cyber & Technology
Read Bio

Amit Davè

VP - Head of U.S. Wholesale Distribution
Read Bio

Mio Rubirosa-Luciano

Underwriting Operations Associate
Read Bio

Underwriting

Christine Brewington

Senior Underwriter
Read Bio

Stephanie Castillo

Underwriting Assistant
Read Bio

Danielle Cordeau

Senior Underwriting Lead
Read Bio

Travis Klipera

Assistant Vice President
Read Bio

Nicole Simmons

Assistant Vice President
Read Bio
Brooke Tanner, Esq.
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.
Richard Winborn
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.
Patrick Mitchell
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.
Mallory Harvey
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.
Jamie Bouloux
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.