James D.
Popularity
#10247 Most Popular
#10247 Overall #248 in Business People
Score: 81
Boosts: 0
Popularity is based on reader activity and boosts.
Breakthrough:Co-founded Costco Wholesale and served as its long-time CEO in 1983
10 Quick Facts About James D. Sinegal
- Full Name: James D. Sinegal
- Nationality: American
- Profession: Businessperson
- Date of Birth: January 1, 1936
- Age: 90 years old
- Place of Birth: Pittsburgh, Pennsylvania
- Marital Status: Married
- Spouse / Partner: Janet Sinegal
- Popular As: Jim Sinegal
- Net Worth: $113,000-$16,969,000 (Estimated range)
James D. Sinegal Age
James D. Sinegal is about 90 years old as of 2026. James D. Sinegal was born in 1936.
Education
He attended San Diego City College, where he earned an AA.
- San Diego City College
- Qualification: AA
- Period: 1955
Career & Work
James D. Sinegal's career includes business leadership roles with Costco Wholesale Corporation.
Organization: Costco Wholesale Corporation
Role: Co-founder, President and CEO
Period: 1983–2011
Details: Co-founded Costco with Jeff Brotman; known for hands-on leadership, employee-focused policies, and building the warehouse club into a major retailer
James D. Sinegal Family & Relationships
James D. Sinegal is married to Janet Sinegal.
Personal Information
- Full Name: James D. Sinegal
- Popular As: Jim Sinegal
- Gender: Male
- Occupation: Businessperson
- Nationality: American
- Living Status: Alive
Birth & Background
- Date of Birth: January 1, 1936
- Age: 90
- Birthday: January 1
- Zodiac Sign: Capricorn
- Place of Birth: Pittsburgh, Pennsylvania
Family & Relationships
- Marital Status: Married
- Spouse / Partner: Janet Sinegal
Net Worth & Income
- Salary: $83,000–$688,000 (Estimated range)
- Net Worth: $113,000–$16,969,000 (Estimated range)
- Source of Income: Employment or business activity; ownership requires separate evidence
