In conjunction with Co-CIO, Peter Jankovskis, Janna is responsible for research, stock selection and portfolio construction related to the firm's investment strategies. She is a founding principal of OakBrook, is a significant shareholder, and is a member of the firm's Management Committee.

Prior to launching OakBrook, Janna was VP & Senior Portfolio Manager for ANB Investment Management & Trust Company, a $35B investment manager (now part of Northern Trust). In addition to her active involvement in managing assets for both the Select Equity and Enhanced Index styles, she was responsible for ANB's Balance Plus product line and an actively managed international equity mutual fund. Prior to joining ANB, she was a Research Analyst at Waldner & Co., a research boutique, and taught economics at College of DuPage.

Janna holds a BA in Economics and Political Science from University of Denver and an MA in Economics from Georgia State University. Janna is a CFA charterholder.

In conjunction with Co-CIO, Janna Sampson, Peter is responsible for research, stock selection and portfolio construction related to the firm's investment strategies. He is a founding principal of OakBrook, is a significant shareholder, and is a member of the firm's Management Committee

Prior to launching OakBrook, Peter was Head of Research for ANB Investment Management & Trust Company, a $35B investment manager (now part of Northern Trust). At ANB, Peter was actively involved in the management of the Select Equity style and an actively managed international equity mutual fund, the development of the quantitative model used for enhanced indexing and research in support of other investment strategies. Before joining ANB, Peter taught courses in finance, macroeconomics, microeconomics and industrial organization at University of California, Santa Barbara.

Peter received BS degrees, sum cum laude, in Computer Science and Mathematics, as well as his MA and PhD in Economics from University of California, Santa Barbara. Peter is a CFA charterholder.

Giri is Head Trader and Portfolio Manager. He is responsible for the execution of trades for all of OakBrook's strategies and is a member of the management team for all strategies. He joined OakBrook shortly after its launch and has worked with OakBrook's principals since 1994.

Prior to joining OakBrook in 1998, Giri was Investment Strategist at ANB Investment Management & Trust Company, a $35B investment manager (now part of Northern Trust). At ANB, he helped develop new investment strategies and manage index portfolios. Before joining ANB in 1992, Giri was a Data Analyst at Morningstar.

Giri received a BA in Economics, with Honors, as well as his MBA, from the University of Chicago. Giri is a CFA charterholder.

Mr. Tyler Nichols is a Research Analyst and Trader at OakBrook Investments, LLC. Tyler provides support for OakBrook’s quantitative research program, trading, and client service efforts. Tyler received a B.S. in Economics and Business Management from North Central College and his MBA from Northern Illinois University.

Paula Mikrut is a Quantitative Investment Analyst at OakBrook Investments, LLC. Paula is responsible for quantitative analysis and software development for research projects on current and new investment strategies. She also contributes to the fundamental research effort for Select Equity.

Paula has an MBA from the University of Chicago, an MS in Computational Finance from DePaul University, and an MS in Computer Science from the University of Wisconsin-Madison. She has passed the CFA Level 3 exam.

David Vandergriff is Director of Marketing at OakBrook Investments, LLC. Prior to joining OakBrook in February 2008, David was a Director of Institutional Sales at Allegiant Asset Management Company (AAMC), calling on corporate plan sponsors and nonprofit organizations. David held a similar position with Banc One Investment Advisors, Inc. before joining AAMC. At Banc One his sales responsibilities also included calling on public funds and Taft-Hartley plans. David sold commercial investment grade real estate prior to joining the institutional investment management industry. He earned a B.A. from Wabash College.

Ms Annette Pfoser is a Marketing Associate at OakBrook Investments, LLC. Prior to joining OakBrook, Annette was an Administrative Assistant at AmSouth Bank in Jacksonville, Florida. Annette began her financial career in 1991 and has since held various banking positions throughout the Chicagoland area and Jacksonville, Florida. Annette majored in Business Administration and Marketing at Lewis University.

Ms. Debbie Burak is a Client Administration Manager at OakBrook Investments, LLC. Prior to joining OakBrook in 2005, Debbie was a Portfolio Administrator at Holland Capital Management, LP. Before joining Holland Capital, LP in 2002, Debbie was an Investment Analyst at Mercer Investment Consulting. Debbie received a B.B.A. in Finance from Benedictine University.

Ms. Rebecca Carter is a Client Administrator at OakBrook Investments, LLC. Rebecca holds a B.S. in Economics and Finance from North Central College.

Ms. Shirley Fisher is the Chief Compliance Officer at OakBrook Investments, LLC. Shirley joined OakBrook in 2007. Prior to joining OakBrook, Shirley was the Assistant Treasurer/Controller at Northern Trust Investments, Inc. and was an Investment Officer in charge of Project Coordination at ANB Investment Management and Trust Company (“ANB”). Prior to joining ANB, Shirley held various Banking, Trust, and Investment positions with American National Bank and Trust Company in Chicago. Shirley received a B.S. in mathematics with minor in computer science from Benedictine University and a master’s degree, summa cum laude, in education from National-Louis University.

Wendi Svitak is the Office Manager at OakBrook Investments, LLC. She is responsible for organizing and coordinating office operations as well as assisting in the completion of RFPs. Wendi holds a B.S. in Business Management from Eastern Illinois University. Currently, she is pursuing a Master’s Degree in Business Administration at Elmhurst College and expects to graduate in May 2013.