‹ Costco
Ch 4 · The Operators
Chapter 4 · Management
Costco is run by lifers. That's a feature, not a bug.
Most companies hire flashy outside CEOs. Costco promotes from the warehouse.
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✦ The bottom line
Ron Vachris, the current CEO, started at Costco unloading trucks in 1982. The whole leadership team is internal.
↓ the brief below
The leadership lineage
1983
Co-founders Jim Sinegal and Jeffrey Brotman open the first warehouse with a strict no-markup philosophy.
2012
Sinegal retires. Craig Jelinek (joined 1984) becomes CEO. Continuity over disruption.
2024
Jelinek hands the keys to Ron Vachris — who started at Costco unloading trucks in 1982. 40+ years in the company.
The famous "15% rule"
Costco caps its markup on most items at 15%. Famously, when a supplier offered a price that would have let Costco raise the markup, Sinegal refused. "We pass it back to the member."
↳ The whole strategy lives or dies on the operating discipline of running thin margins on purpose. Lifer leadership protects that culture from short-term pressure.
Source · 10-K · Business — Pricing Strategy (widely reported across financial press) · Updated May 26, 2026
✓
Strong
Lifer-run. The 15% markup rule is sacred.
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Chapter 4 · MANAGEMENT
The Operators
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Chapter 6 · RISK
The Quiet Threat