Samuel Zales, CarGurus' Chief Operating Officer and President, sold 10,000 shares at $34.62 per share on September 15, 2026, netting $346,200 from the transaction. While the sale was executed through a Rule 10b5-1 trading plan—a mechanism designed to protect insiders from insider trading accusations—the timing raises questions about confidence in the company's trajectory, especially given what came next.
Just days after Zales' disposal, CarGurus reported third-quarter 2026 results that decisively beat Wall Street expectations. The company posted revenue of $258 million, surpassing the forecasted $256.37 million, while delivering non-GAAP earnings per diluted share of $0.70, representing a robust 17% increase year-over-year. Revenue growth of 12% from the prior year period, combined with guidance that places results at the higher end of management's own projections, paints a picture of a company firing on all cylinders.
The financial strength is underpinned by impressive fundamentals. CarGurus maintains gross profit margins of 92%—a figure that underscores the efficiency of its business model. With the stock trading near $34.81 and a market capitalization of $3.11 billion, the company's P/E ratio of 22 appears reasonable for a business demonstrating this kind of operational excellence and growth trajectory. InvestingPro's assessment that the stock appears undervalued at current levels adds credibility to this view.
The catalyst for CarGurus' outperformance is particularly noteworthy: stronger adoption of new dealer products. This suggests the company isn't merely coasting on past success but actively innovating and gaining traction with its customer base. For an insider like Zales, this momentum should theoretically be compelling.
After the sale, Zales retains direct beneficial ownership of 455,349 shares, so he maintains substantial skin in the game. However, the irony is unavoidable. He sold at $34.62 per share just as the company was about to demonstrate the kind of operational excellence that typically drives stock appreciation. While Rule 10b5-1 plans are legitimate tools for avoiding impropriety, they can also obscure whether insiders are genuinely confident in near-term prospects.
For shareholders, the takeaway is straightforward: focus on the fundamentals, not the insider trading calendar. CarGurus' 92% gross margins, 17% earnings growth, and revenue beat suggest the company deserves investor attention. Zales may have sold too early, but that's his loss—and potentially your gain if you're willing to bet on the company's demonstrated momentum.