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Business Notebook

Business Notebook

Strategic frameworks, case studies, and playbooks for building and scaling with AI. A living reference for founders, operators, and strategists.

Overview

Notes from primary sources, starting with earnings calls: what companies tell investors, on the record, about AI and how it is changing their business. Each note links to the companies and the people in it, and every line carries its source.

Green marks what a company said about AI and digital.

Earnings calls

Earnings call · Costco · September 24, 2026

Costco's Q4 FY2026 earnings call: what the CFO said about AI search

Costco reported its fourth quarter of fiscal 2026 on September 24, 2026. On the call, CFO Gary Millerchip said traffic from AI search grew triple digits for the second quarter in a row and converts better than any other traffic to costco.com. This note collects every AI and digital statement from the call, highlighted in green, each with its source.

Companies

Costco

Costco Wholesale Corporation runs membership warehouses: 939 of them as of September 2026, with e-commerce sites in nine countries. It began operations in 1983 in Seattle, and its executive offices are in Issaquah, Washington. It trades on Nasdaq as COST.

People

Ron Vachris

President and Chief Executive Officer, Costco

Gary Millerchip

Executive Vice President and Chief Financial Officer, Costco