FormFactor (FORM) is trading lower as the market reacts to a fresh set of insider-selling disclosures and a broader reassessment of valuation after a strong multi-month run. A Form 4 filing shows CEO Mike Slessor sold 10,227 shares on March 18, 2026 across multiple transactions in the mid-$90s, reinforcing a near-term “sell-the-news” dynamic for a stock that had been priced for continued upside. (stocktitan.net)

The selling pressure lands at a time when FORM’s valuation has become a focal point for bears. A short call earlier this year explicitly highlighted the stock’s steep run from cycle lows and argued the shares were pricing in little margin for error, which can amplify drawdowns on down days even without a single headline catalyst. (intellectia.ai)

FormFactor recently reported Q4 2025 results that beat expectations and issued Q1 FY2026 guidance around $225 million (±$5 million) of revenue and non-GAAP EPS around $0.45 (±$0.04), helping drive the prior rally. But with the next earnings date not until May 6, 2026, incremental trading has been more sensitive to positioning, insider activity, and valuation narratives rather than new operating updates. (investing.com)

Traders will be watching for any follow-on insider transactions, updates on margin improvement efforts and tariff-related gross-margin headwinds discussed around the company’s recent guidance, and any signs of demand volatility in probe cards tied to AI/HBM ramps. The next major catalyst is FormFactor’s earnings report scheduled for May 6, 2026, when management can refresh the revenue/margin trajectory that the stock’s premium multiple depends on. (tipranks.com)