Costco EVP Sells $732K in Shares Amid Legal Overhang

Claudine Adamo reduces stake by 10.66% as retailer faces customer lawsuits over tariff charges

Mar. 12, 2026 at 2:04pm

Got story updates? Submit your updates here. ›

Costco Wholesale Corporation (NASDAQ:COST) Executive Vice President Claudine Adamo sold 730 shares of the company's stock on March 9th at an average price of $1,003.02, reducing her stake by 10.66% to 6,121 shares valued at around $6.14 million. The sale comes as Costco faces legal challenges from customers seeking refunds of tariff-related charges following a Supreme Court decision, creating potential liabilities and PR risk for the retailer.

Why it matters

Insider selling activity can signal a shift in sentiment, even if the transaction size is relatively small. In this case, the legal overhang from the customer lawsuits adds uncertainty around Costco's potential liabilities and margins, which could impact the stock price despite the company's strong operational performance and growth outlook.

The details

Adamo's sale of 730 Costco shares, representing a 10.66% reduction in her position, comes after the company reported better-than-expected Q2 results with revenue and earnings per share beating estimates. Costco highlighted membership growth and increased traffic as key drivers of its performance. However, the retailer is now facing multiple lawsuits from customers seeking refunds of tariff-related charges following a Supreme Court decision striking down certain Trump-era tariffs. The plaintiffs are seeking class-action status and demanding refunds if Costco receives government reimbursements, creating uncertainty around potential liabilities, PR risks, and administrative costs.

  • Adamo sold the 730 Costco shares on March 9, 2026.

The players

Claudine Adamo

An executive vice president at Costco Wholesale Corporation.

Costco Wholesale Corporation

An American membership-only warehouse club that provides a wide selection of merchandise and offers a range of ancillary services.

Got photos? Submit your photos here. ›

What they’re saying

“We must not let individuals continue to damage private property in San Francisco.”

— Robert Jenkins, San Francisco resident

What’s next

The judge in the case will decide on Tuesday whether or not to allow Walker Reed Quinn out on bail.

The takeaway

This case highlights growing concerns in the community about repeat offenders released on bail, raising questions about bail reform, public safety on SF streets, and if any special laws to govern autonomous vehicles in residential and commercial areas.