Ascot Group Limited, a Bermuda-based global specialty insurance company, has announced the appointment of Rosalind Brewer, Martin Flanagan, and Robert Sewell to its Board of Directors, pending regulatory approval. These additions aim to enhance the company’s strategic leadership as it builds on nearly 25 years of operational excellence.
Ascot Group appoints Brewer, Flanagan, Sewell to Board of Directors.
Rosalind Brewer brings retail and healthcare leadership expertise.
Martin Flanagan offers extensive financial and investment experience.
Robert Sewell contributes deep insurance and risk management knowledge.
Appointments to drive Ascot’s global growth and innovation.
Pending regulatory approval, effective June 2025.
The appointment of Rosalind Brewer, Martin Flanagan, and Robert Sewell to Ascot Group’s Board of Directors marks a significant step in fortifying the company’s governance. “We are excited to have these three dynamic executives join our Board of Directors. Roz, Marty and Rob each bring invaluable experiences and a unique set of leadership skills to this organization,” said Kewsong Lee, Chairman of the Board of Ascot Group Limited. These leaders are poised to guide Ascot through its next phase of global expansion.
Rosalind Brewer, currently interim President of Spelman College and a board member of United Airlines Holdings, Inc., previously served as CEO of Walgreens Boots Alliance from 2021 to 2023. During her tenure, she led over 450,000 employees and transformed Walgreens into a healthcare and digital retail leader. Brewer’s prior roles at Starbucks, Walmart, and Kimberly-Clark, along with her extensive board experience, bring strategic and operational expertise to Ascot.
Martin Flanagan, chairman of Engage Ventures, LLC, served as President and CEO of Invesco from 2005 to 2023, overseeing the acquisition of Oppenheimer Funds. A CFA charterholder and certified public accountant, Flanagan’s experience in financial services and governance, including his role on the Investment Company Institute’s board, will support Ascot’s growth in specialty insurance markets.
Robert Sewell, Chairman of Ascot Underwriting Limited (AUL) since June 2024, joined AUL’s board in July 2023 as an Independent Non-executive Director. Previously, he served as CFO of Pension Insurance Corporation from 2008 to 2021 and chaired the Board Audit & Risk Committee at AIG Life Limited. Sewell’s 20-year track record in insurance and risk management strengthens Ascot’s strategic oversight.
“Ascot Group, our colleagues and clients, will all benefit from the strategic expertise, leadership qualities and vast experience that Roz, Marty and Rob bring to our organization,” said Jonathan Zaffino, President and Chief Executive Officer. Sam Blaichman, Managing Director at CPP Investments and Ascot Board Director, added, “We look forward to working with our new directors. The Ascot Group has achieved a tremendous level of success over the past few years, and the new board members’ expertise will be valuable in guiding Ascot through its next stage of growth.” The appointments, announced on June 18, 2025, reflect Ascot’s commitment to leveraging diverse expertise for continued success in the global insurance sector.
Ascot is a leading global insurance, reinsurance, and underwriting services group with over 20 years of consistency and stability, and a diverse insurance product portfolio. US insurance company affiliates within the Ascot Group are rated A (Excellent) by AM Best Company.
Rosalind (Roz) Brewer is currently the interim President of Spelman College, her alma mater, and serves on the board of United Airlines Holdings, Inc. Ms. Brewer was previously CEO of Walgreens Boots Alliance, Inc. from 2021 to 2023. During her time at Walgreens Boots Alliance, Ms. Brewer led more than 450,000 colleagues globally, oversaw multiple acquisitions and helped to transform Walgreens from a well-known pharmacy chain into a destination healthcare company and digital health retailer. She has also held various leadership positions at Starbucks Corporation, Walmart, Inc., and Kimberly-Clark Corporation and has served on multiple boards of directors.
Martin (Marty) Flanagan is currently the chairman of Engage Ventures, LLC, a venture capital investor that enables startups with capital and expertise to thrive in the corporate landscape. Prior to that, Mr. Flanagan served as the President and CEO of Invesco from 2005 to 2023 and Chairman Emeritus of Invesco Ltd. from 2023-2024, where he directed the firm's acquisition of Oppenheimer Funds. Mr. Flanagan is a CFA charter holder and a certified public accountant. He formally served on the board of governors and as a member of the executive committee for the Investment Company Institute.
Robert (Rob) Sewell is currently the Chairman of the Board of Ascot Underwriting Limited (AUL), a UK based subsidiary of the Ascot Group. Mr. Sewell joined the AUL board in July 2023 as an Independent Non-executive Director and assumed the chairman's role in June 2024. Prior to AUL, Mr. Sewell was an Independent non-executive Director, and Chair of the Board Audit & Risk Committee at AIG life limited and served as the chief financial officer for Pension Insurance Corporation from 2008 to 2021. Mr. Sewell has a twenty-year track record of excellence in various board and executive level roles and will continue to serve as Chairman of the Board of AUL.
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