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Jim Sinegal Age, Career Timeline, and Background

retail-leadership

As of 2025, Jim Sinegal is 83 years old and remains a widely recognized figure in retail for cofounding Costco and shaping its membership warehouse model. Born on Feb. 1, 1942,...

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Jim Sinegal and the Mariners: Relationship, Involvement, and What It Means for the Franchise

Business and Leadership

Jim Sinegal is best known as the founder and former CEO of Costco, not a public-facing role with the Seattle Mariners. There is no evidence of Sinegal holding an operational, ow...

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