BRIAN S. POSNER - Corporate Board Profile

ARCH CAPITAL GROUP LTD.

Filing Date	Source Excerpt
2013-03-29	Mr. Posner has been a private investor and president of Point Rider Group LLC, a consulting and advisory services firm within the financial services industry. He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business.
2014-03-27	He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business. Mr. Posner’s qualifications for service on our Board include his strong financial background, investment skills and extensive experience as a leading institutional investment manager and advisor.
2015-03-26	He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business.
2016-03-23	Mr. Posner has been a private investor and President of Point Rider Group LLC, a consulting and advisory services firm within the financial services industry. He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business.
2017-03-24	He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business. Mr. Posner’s qualifications for service on our Board include his strong financial background, investment skills and extensive experience as a leading institutional investment manager and advisor.
2018-03-28	He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business.
2019-03-28	He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business. Mr. Posner’s qualifications for service on our Board include his strong financial background and investment skills.
2020-03-27	He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business.
2021-03-26	He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business.
2022-03-25	Mr. Posner has a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business.
2023-03-23	Mr. Posner has been a private investor since March 2008 and is the President of Point Rider Group LLC, a consulting and advisory services firm focused on financial, technology, bio-pharmaceutical and other services-related companies. From 2005 to March 2008, Mr. Posner served as the President, Chief Executive Officer and Co-Chief Investment Officer of ClearBridge Advisors, LLC, an asset management company and a wholly owned subsidiary of Legg Mason (since acquired by Franklin Resources). Prior to that, in 2000, Mr. Posner co-founded Hygrove Partners LLC, a private investment fund and served as the Managing Member for five years. He served as a portfolio manager and an analyst at Fidelity Investments from 1987 to 1996 and, from 1997 to 1999, at Warburg Pincus Asset Management/Credit Suisse Asset Management where he also served as Co-Chief Investment Officer and director of research. Mr. Posner is Executive Chair of Fika Community Ltd., a private health-tech company domiciled in the UK. He is also a Charter Trustee of Northwestern University and serves on the Advisory Board at Northwestern's Center for the Study of Diversity and Democracy. He previously served on the board of directors of Biogen Inc. and as Chair of the AQR Funds. He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business.
2024-03-28	He holds a B.A. from Northwestern University and an M.B.A. from the University of Chicago Booth School of Business.
2025-03-25	Mr. Posner is the Managing Member of Point Rider Group LLC and President of Point Rider Group (UK) Ltd., providing strategic and financial insights. He holds a B.A. from Northwestern University and an MBA from the University of Chicago Booth School of Business.

BIOGEN INC.

Filing Date	Source Excerpt
2014-04-30	Brian S. Posner Age: 52 Director since: 2008 Committee Memberships: Corporate Governance, Finance and Audit
2015-04-30	Brian S. Posner Age: 53 Committee Memberships: Audit, Corporate Governance, Finance (Chair) Mr. Posner has served as one of our directors since 2008.
2016-04-15	Mr. Posner, 54, has served as one of our directors since 2008. Mr. Posner has been a private investor since March 2008 and is the President of Point Rider Group LLC, a consulting and advisory services firm within the financial services industry. From 2005 to March 2008, Mr. Posner served as the President, Chief Executive Officer and co-Chief Investment Officer of ClearBridge Advisors LLC, an asset management company and a wholly-owned subsidiary of Legg Mason. Prior to that, Mr. Posner co-founded Hygrove Partners LLC, a private investment fund, in 2000 and served as its Managing Partner for five years. He served as a portfolio manager and an analyst at Fidelity Investments, a financial services company, from 1987 to 1996 and, from 1997 to 1999, at Warburg Pincus Asset Management/Credit Suisse Asset Management where he also served as co-Chief Investment Officer and Director of Research. Given his substantial experience as a leading institutional investment manager and advisor, Mr. Posner brings a professional investor's perspective and significant management and financial expertise that is valuable to our Board of Directors as it oversees our strategy for enhancing stockholder value. Biogen Committee Memberships: Finance (Chair), Audit, Corporate Governance. 2015 Director Compensation: $448,508.
2017-04-26	Mr. Posner, 55, has served as one of our directors since 2008. Mr. Posner has been a private investor since March 2008 and is the President of Point Rider Group LLC, a consulting and advisory services firm serving predominantly the financial services industry. Biogen Committee Memberships: Finance (Chair), Audit, Corporate Governance. 2016 Director Compensation: $480,420.
2018-04-27	Mr. Posner, 56, has served as one of our directors since 2008. Mr. Posner has been a private investor since March 2008 and is the President of Point Rider Group LLC, a consulting and advisory services firm serving predominantly the financial services industry, as well as institutional investors seeking to make control investments in that industry. From 2005 to March 2008, Mr. Posner served as the President, Chief Executive Officer and co-Chief Investment Officer of ClearBridge Advisors LLC, an asset management company and a wholly-owned subsidiary of Legg Mason. Prior to that, Mr. Posner co-founded Hygrove Partners LLC, a private investment fund, in 2000 and served as its Managing Partner for five years. He served as a portfolio manager and an analyst at Fidelity Investments, a financial services company, from 1987 to 1996 and, from 1997 to 1999, at Warburg Pincus Asset Management/Credit Suisse Asset Management where he also served as co-Chief Investment Officer and Director of Research. Mr. Posner also serves as a director of AQR Funds and Arch Capital Group Ltd., a specialty insurance and reinsurance provider. Given his substantial experience as a leading institutional investment manager and advisor, Mr. Posner brings a professional investor’s perspective and significant management and financial expertise that are valuable to our Board of Directors as it oversees our strategy for enhancing stockholder value. Biogen Committee Memberships: Finance (Chair), Audit, Corporate Governance. 2017 Director Compensation: $450,479.
2019-04-30	Mr. Posner has been a private investor since March 2008 and is the founder and Managing Partner of Point Rider Group LLC, a boutique consulting and advisory services firm that provides customized solutions to senior executives and boards of financial, bio-pharmaceutical and other services-related companies, as well as strategic investors that make, direct and control investments in those sectors.
2020-04-20	Mr. Posner has been a private investor since March 2008... Biogen Board Committee: Compensation and Management Development... 2019 Director Compensation: Brian S. Posner total $444,643.
2021-04-23	Mr. Posner is a private investor and founder of Point Rider Group LLC... Biogen Board Committee: Compensation and Management Development... 2020 Director Compensation: Brian S. Posner total $434,314.