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Mario M. Rosati
Partner Emeritus
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  • Longstanding Member of the Firm

    Mario was with Wilson Sonsini since 1971, first an associate and, since 1975, as a partner

  • Additional Roles

    Mario was an adjunct professor at the University of California at Berkeley's Haas School of Business, and at the UC Berkeley School of Law (Boalt Hall); has sat as a judge pro-tem in the San Mateo County Superior Court; and participated in the Innovation and Entrepreneurship Task Force to the office of the President Elect, Ronald Reagan.

Mario Rosati was with Wilson Sonsini Goodrich & Rosati since 1971, first as an associate and, since 1975, as a partner before retiring in January 2020. Mario specialized in corporate law, especially as it related to technology companies. He served as the managing partner of WS Investments, an investment partnership composed of the partners and associates of the firm. WS Investments has invested in a number of emerging corporations over the years.

From 1994 to 2010, Mario was an adjunct professor at the University of California at Berkeley's Haas School of Business, where he taught new venture finance. In 2012, he taught the same subject at the UC Berkeley School of Law (Boalt Hall).

Mario has sat as a judge pro-tem in the San Mateo County Superior Court. He also participated in the Innovation and Entrepreneurship Task Force to the office of the President Elect, Ronald Reagan.

In addition to the boards of the public companies mentioned below, Mario has served as a director of several privately held companies.

Experience

Mario Rosati was with Wilson Sonsini Goodrich & Rosati since 1971, first as an associate and, since 1975, as a partner before retiring in January 2020. Mario specialized in corporate law, especially as it related to technology companies. He served as the managing partner of WS Investments, an investment partnership composed of the partners and associates of the firm. WS Investments has invested in a number of emerging corporations over the years.

From 1994 to 2010, Mario was an adjunct professor at the University of California at Berkeley's Haas School of Business, where he taught new venture finance. In 2012, he taught the same subject at the UC Berkeley School of Law (Boalt Hall).

Mario has sat as a judge pro-tem in the San Mateo County Superior Court. He also participated in the Innovation and Entrepreneurship Task Force to the office of the President Elect, Ronald Reagan.

In addition to the boards of the public companies mentioned below, Mario has served as a director of several privately held companies.

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