Douglas B. Sieg | Biographies | Lord Abbett
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Douglas B. Sieg

Douglas B. Sieg
Douglas B. Sieg
Managing Partner

Doug Sieg is the Managing Partner of Lord, Abbett & Co. LLC and serves as President and Chief Executive Officer of the Lord Abbett Family of Funds. As Lord Abbett’s 10th Managing Partner, Mr. Sieg is responsible for leading the firm in delivering on our mission: Securing a sustainable future for our clients, our people, and our world. In this role, he oversees the firm’s efforts in drawing on the strength of its people, delivering relevant and superior investment strategies, cultivating meaningful relationships, and ensuring organizational stability. Mr. Sieg oversees the Executive Committee and Investment Committee, which are focused on managing and operating the firm.

Since joining Lord Abbett in 1994, Mr. Sieg has worked with virtually every area of the organization, including distribution, investments, human capital management, finance, digital, and corporate services. Prior to assuming his role as Managing Partner, he was in charge of Client Services, where he led a successful international expansion of the organization. He has worked in the financial services industry since 1992.

Mr. Sieg earned a BS in business from The Pennsylvania State University. He lives in Summit, New Jersey with his wife and four daughters. Mr. Sieg is on the board of Kent Place School, which has provided a superior education to young women from diverse backgrounds for more than 100 years. In addition, he serves on the board of directors of the Investment Company Institute, the board of fellows of Weill Cornell Medicine, the Fast Company Impact Council, and as an advisor to Just Capital.

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