Nathan Rosenbaum Essay

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Biographical and Family Information
Nathan Samuel Rosenbaum is a commercial real estate investor and President of Manta Holdings, LLC, which owns several apartment buildings throughout Washington State. His professional background includes positions with, where he was Senior Relationship Manager for Amazon's portable e-reader Kindle and Senior Account Manager, External Payment Services, and at Microsoft Corporation, where he had positions in business development, account operations and credit services.

Nathan Rosenbaum was also Vice President of Corporate Finance at Canadian National Bank, where he managed capital markets transactions and developed and expanded credit relationships with a number of large companies, including
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Pangea, (formerly known as World Venture Partners), is a giving circle that supports grassroots organizations in developing countries, working to improve the quality of life in their communities. Pangea works with countries throughout Southeast Asia, East Africa and Latin American America including Cambodia, Kenya, Guatemala, Mexico, Tanzania, Burundi and Myanmar.

He has a B.A. from Cornell University, an M.B.A. from the University of Chicago and a Commercial Real Estate Certificate from the University of Washington. He is a Tournament bridge player, scuba diver and sings with BlueStreet Voices, a Seattle-based jazz choir.

Nathan is married to Sabrina Seward, Director of Client Relations at Kimball Creek Partners, an investment and financial services firm and the Principal of Rosetree Wealth LLC, which she established in 2013. She has over thirty years of experience in financial services as both a banker and investment advisor and has served on the boards of the Seattle Reparatory Theater, Pontiac Bay Symphony Orchestra, Coyote Central and Providence Hospice of Seattle.

Nathan and Sabrina have one daughter, Julianna, who is about twelve years
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They have at least one Donor Advised Fund (The Sabrina K. Seward and Nathan S. Rosenbaum Charitable Gift Fund at Fidelity Charitable), which they be using for charitable giving purposes. They’ve They’ve made known gifts of $1,000-$9,999 to the Seattle Repertory Theatre and the World Affairs Council and gifts of unknown sizes to the Jewish Federation of Greater Seattle, Hopelink, Seattle Girls School (2017-2018 tuition is $26,400), Cornell University, Temple De Hirsch Sinai and the Girl Scouts of Western Washington. However, given the list of non-profit boards they’ve served on, particularly Nathan’s involvement with Pangea, which exists solely to support non-profits, it seems highly likely they’ve made at least some anonymous (or unpublished) gifts. More information is
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