CEO Stephanie Disher sold 25,652 shares of ATMU at $45.25 for $1.2M; stock down 10.3% in 30 days, -25.9% over 90 days.
Stephanie Disher, Chief Executive Officer, sold 25,652 shares at $45.25 on 2026-06-01, reducing her holdings from 388,676 shares to 363,024 shares. The sale occurred against a backdrop of material recent weakness: the stock has declined 10.3% over 30 days and 25.9% over 90 days, trading 29.0% below its 52-week high of $66.50. While the company maintains solid fundamentals—$477.5M in quarterly revenue, $48.4M in net income, and a P/E of 18.31—the timing of the CEO's sale during a significant downtrend raises questions about near-term momentum and confidence in the current valuation relative to recent peaks. The transaction itself represents a meaningful but not exceptional reduction in her stake (6.6% of pre-transaction holdings), warranting monitoring of any follow-up filings to assess whether this signals a broader de-risking or shift in strategic positioning.