Board of Trustees
Volunteers fill all Catlin Gabel board positions. Trustees are carefully selected based on demonstrated service and clear commitment to the school's goals and philosophies.
Potential trustees are nominated by the committee on trustees and elected by the board. The elected board of trustees and several ex-officio board members set policy for the school and review the school's implementation of its policies.
Catlin Gabel School conducts an annual audit of its financials by an outside firm. We also share information on our annual operating budget every year with parents and guardians. Audited financials and the operation budget are on file in the school’s business office and are available for review and discussion by school community members. Please contact the Business Office if you are interested.
2025-26 Board of Trustees
Mark Holliday
CHAIR of the Board of TRustees, Board member since 2015-16
Mark graduated from Northwestern University with a degree in economics. He is the President of the investment fund Goshawk Capital. He has Director, Audit, and Finance committee experience from his current and past involvement with ten corporate boards, including Washington Mutual, Primus Telecommunications, and YRC Worldwide. For Catlin Gabel, he has served on the Creative Arts Center, Finance, and Advancement committees. He is the parent of two Catlin Gabel graduates.
NITESH SHARAN
VICE CHAIR, board member SINCE 2021-22
A board member since 2021, Nitesh holds a bachelor’s degree from Case Western Reserve University and an MBA from the Kellogg School at Northwestern University. He is currently Chief Financial Officer at SoundHound AI, where his responsibilities include Strategy, Global Finance, Legal, and Intellectual Property; he successfully took the company public in 2022. Previously he was Vice President and CFO for Nike’s Global Operations & Technology function. Nitesh is a Board Member of the Alzheimer’s Association Oregon and SW Washington chapter. He is a parent of two students at Catlin Gabel.
Marc Hill
TREASURER, BOARD MEMBER SINCE 2024-25
Marc graduated from the University of Oregon with a double major in marketing and management. He was the CEO of The United States Playing Card, The Coleman Company, and recently Stella and Chewy’s; he retired in February of 2024. Marc has lived all over the world, privately and professionally, and is fluent in German. He has vast experience in public and private equity-backed companies as a CEO and board member. Marc is a member of YPO, mentors young professionals, and is the parent of a fifth grader at Catlin Gabel.
Kate Warren Hall ’93
SECRETARY, board member since 2018-19
Kate received a BA in economics and an Executive MBA at the Babson College F. W. Olin Graduate School of Business, and her degrees were earned while she was also working for Cascade Corporation. She joined ESCO in 2014 to work in Mergers and Acquisitions, and joined their board in 2016. Kate is an alumna, with two children currently attending Catlin Gabel.
lisa ericksen
BOARD MEMBER SINCE 2024-25
Lisa worked in finance as a regulatory compliance officer, retiring after 25 years, and is currently managing her family’s charitable foundation. She has served the school as PFA President and Vice President, and in other volunteer capacities; the Ericksen family connection to Catlin Gabel goes back to Miss Catlin’s School. Lisa and her husband are the parents of a senior and lifer, who they are raising to understand the importance of philanthropy, being active in one’s community, and honoring their Indigenous American heritage.
JOhn Gilleland
board member SINCE 2019-20
John graduated from Oregon State University with degrees in accounting and finance and a minor in computer science. He is the Chief Executive Officer and Chairman of Campbell Global, an investment advisor specializing in natural resource and forest investments, and is the Chairman of OneFortyOne Plantations, Pty, Ltd. in Australia. John served as a trustee at Catlin Gabel from 2000 to 2013, and during this period held the positions of Treasurer, Vice-chair, and Chair. John is a parent of two Catlin Gabel “lifer” graduates.
SUSIE GREENEBAUM ’05
Board member since 2023-24
Susie is Vice President of Client Services at Sprinklr, a B2B SaaS company based in New York City. She spent six years at Nike where she led the Consumer Digital Technology Communications and Engagement team. Susie is a Catlin Gabel lifer who earned a bachelor’s degree in International Studies from the University of Oregon. She has served as Catlin Gabel Alumni Board President and a board member of Friends of the Columbia Gorge. Susie is a parent of two Beginning School students at Catlin Gabel.
JULIET HILLMAN ’09
Board member since 2023-24
Juliet is a Catlin Gabel lifer who serves on the boards of Oregon Ballet Theatre and Converge 45, and is the Board Chair of the Hillman Family Foundations, which includes the Juliet Ashby Hillman Foundation. The Foundation is committed to partnering with organizations that help mitigate the many risk factors that may impact a young person's ability to reach their full potential, and works to cultivate a healthier, more culturally vibrant, environmentally sustainable, and economically stable future for the Portland region.
ROBERT D. KELLY, PH.D.
Board member since 2023-24
Rob is the 21st President of the University of Portland, and the first layperson and first person of color to lead that institution. He has held senior administrative and teaching positions at Loyola University Maryland, Loyola University Chicago, Seattle University, and Union College, among other institutions. Rob holds a Ph.D. in philosophy, education policy, planning and administration from the University of Maryland; a master’s degree in Higher Education and Student Affairs Administration from the University of Vermont; and a bachelor’s degree in political science from Loyola University Maryland. Rob is a parent of two children, one of whom is a Catlin Gabel student.
gretchen keys
BOARD MEMBER SINCE 2024-25
Gretchen completed her Doctor of Dental Surgery at Baylor College of Dentistry, and relocated to Portland in 1995. She now collaborates with her husband to develop design concepts for multi-family housing projects. Her philanthropic work includes co-founding Fortify Families, a non-profit focused on housing at-risk families. She has also been a board member of the Classic Wines Auction and chaired the American Cancer Society’s annual gala. Gretchen is the parent of a Catlin Gabel graduate and a current Upper School student.
JUNE KIM
Board member since 2023-24
June earned a bachelor’s degree from Williams College and a master’s degree in Journalism from Columbia University. She has worked as a business journalist at BusinessWeek and SmartMoney, and has had work published at various news outlets including the New York Post, and Newark Star-Ledger. June has served on the PFA in various roles. She has three children, one of whom is currently enrolled at Catlin Gabel.
Deepthi Madhava
New Board Member
Deepthi holds an MBA from the Indian School of Business and a bachelor’s degree in computer science engineering. She is a Partner at Oregon Venture Fund (OVF), a venture capital firm backing startups across Oregon and Southern Washington, where she plays a key role in sourcing, evaluating, and supporting early-stage investments. Prior to joining OVF, Deepthi spent over a decade in global leadership and consulting roles at Deloitte, where she advised internal teams and Fortune 1000 companies. She is a parent of a Middle School student at Catlin Gabel.
Henry “Harry” Miller ’05
New Board Member
Henry is a Catlin Gabel lifer and attended The College of William and Mary, graduating in 2010 with a degree in history. He is a Partner at Fore Property Company, a vertically integrated real estate organization that is one of the country’s largest multifamily developers; with Fore, Harry has built over 2,500 apartment units in the Portland Metro area. He has three children, two of whom are current Catlin Gabel students in the Beehive and Lower School.
Angela Patrick
NEW board member
Angela holds bachelor’s degrees in history and accounting from Southern Methodist University and a Master of Science in management from the Stanford University Graduate School of Business. She is a CPA and has held senior finance and accounting positions at Nike in the U.S. and Europe. She began her career at the accounting firm Arthur Andersen in Dallas and Chicago. Angela has volunteered in multiple PFA roles and at Portland-area organizations. She and her husband, Marc, have three children, one of whom is a current student at Catlin Gabel.
CHris park ’14
board member since 2024-25
Chris is vice president of Westhood, Inc., an investment company whose portfolio includes The Reserve Vineyards and Golf Club. As a student at Catlin Gabel he served on the Board of Trustees as Student Association President; he went on to attend Princeton University and graduated with a degree in public and international affairs. Chris began his development career at Nike where he was the owner’s rep and lead project manager for the LeBron James building at World Headquarters. Chris enjoys traveling and spending time with family.
KIA SELLEY
board member since 2023-24
Kia has a B.S. in Landscape Architecture from the University of California, Davis. She is Director of the North Clackamas Parks & Recreation District and has previously held executive leadership roles at Portland Parks, city of Gresham and Prosper Portland. She has dedicated her public service career to enhancing livability and health through access to parks, nature, and recreation. She is currently a board member of the Portland Parks Foundation and a Governor-appointed member of the Oregon State Landscape Architect Board. Her past service includes the Lan Su Classical Chinese Garden Board and the Oversight Committee for the Portland Japanese Garden’s Cultural Crossing project. Kia is a parent of a Catlin Gabel Upper School student.
Tyler Silver
board member since 2018-19
Tyler graduated with a B.A. from DePauw University and received his M.A. in Counseling Psychology from Lewis and Clark College. He currently serves as Distribution Trustee for his family's foundation, the Silver Family Foundation, which focuses on transitional youth development programs that offer in-depth, long-term investments, mentoring, and opportunities for motivated, low-income youth. Tyler is the parent of one graduate and has three children currently attending Catlin Gabel.
LAURA TREMBLAY, M.D.
board member SINCE 2020-21
Laura received her undergraduate degree from Princeton University and her medical degree from the University of Texas Southwestern. She completed her residency in Internal Medicine at Stanford University Hospitals. Laura practiced as a primary care physician and also worked as a medical safety officer at Sanofi Genzyme, monitoring drugs on the market and in clinical trials. She has four children; one is a graduate and two children currently attend Catlin Gabel.
Jacob Winkler ’05
New Board Member
A Catlin Gabel lifer, Jacob studied political science at Brown University. His career has focused on building companies from early to growth stages, most recently as CMO of Brandlive, a SaaS platform for video streaming. Previously, he led growth marketing and product management at Nike’s internal startup incubator. Jacob was an early employee of Range Networks, a company bringing cellular access to disconnected geographies. He is now an independent investor and consultant. He and his wife, Edith, have two daughters at Catlin Gabel.
Jason Zidell '97
NEW board member
Jason is a fourth-generation Portlander with a family tradition of philanthropy and community involvement. He attended Catlin Gabel from third grade through high school. He is the immediate past president of Portland Jewish Academy and Mittleman Jewish Community Center, as well as the board chair of the Jason E. Zidell Foundation. Jason is also the founder and president of the Argonaut Group, a real estate investment company based in Portland.
Ex Officio Board Members
Tim Bazemore
Head of School
Tim earned his B.A. in history from Middlebury College and a master's degree in history from the University of Pennsylvania. He started his career teaching humanities at Chestnut Hill Academy, a boys K-12 school in Philadelphia, and served as admissions director and head of the middle school. He then became head of school at New Canaan Country School in New Canaan, Connecticut, a position he held for 14 years. He and his wife Lisa have two sons.
Kymberly Herbst
Employee Forum President
Kymberly received her BFA in Acting from the University of Southern California. Prior to arriving at Catlin Gabel in 2016, she was on the founding board of two theater companies, and she acted, directed, and taught children’s theater classes for both companies for 10 years. Kym was an interim Middle School and then Upper School theater teacher at Catlin Gabel before stepping into the role of Registrar, where she works with and supports students through the college process. She is the parent of two Catlin Gabel graduates.
robin Janssen
Parent Faculty Association President
Approaching her 11th year as a Catlin Gabel parent, Robin has participated in a variety of Catlin Gabel volunteering roles, including co-chairing the Gala, Art Auction lead, serving on the PFA Executive Council, and co-leading the Neurodiversity Affinity and Discussion Group. Robin has found volunteering over the years to be very fulfilling experience; she partners with openness and curiosity.
ERIC MANDEL '99
Catlin Gabel ALUMNI ASSOCIATION PREsident
Eric holds a bachelor’s degree from The University of Pennsylvania in international relations and a master’s degree in urban planning from Columbia University. He worked for The Community Preservation Corporation in New York City, a nonprofit affordable housing and community revitalization finance and development company. He returned to Portland in 2019 and currently works at the real estate development company Killian Pacific. Eric is a parent of a Lower School student.
Diana Manternach ’26
Catlin Gabel Student Association President
Diana has attended Catlin Gabel since sixth grade and has made meaningful connections with the community over the years. As a captain on the cross-country team and the former student government treasurer, she has experience with leadership. She also leads the Middle Eastern Affinity and Appreciation Club, as well as playing the tenor saxophone in the Jazz Band. During summer Diana enjoys refereeing lacrosse and gardening.
Don Vollum ’84
Returning Board Member
Don is a Managing Partner of Vista Ridge Capital, a private equity investment firm based in Portland. He and his wife, Marian ’82, are the parents of two Catlin Gabel alumni, David ’16 and Lily ’19. He previously served on the Catlin Gabel board from 2008-2011, and again from 2021-2022 as the Endowment Committee Chair. Don has served on the Endowment Committee since 2012 and has also served on or led endowment committees for Providence St. Vincent Foundation, Columbia River Maritime Museum, and the Sisters of St. Mary of Oregon.