GM Tien-Szu Chen sells 530,000 ASE shares (19.1% of holdings) for $247.1M at $466.30 blended avg
Chen Tien-Szu, GM of ASE Inc. Chung-Li Branch, executed 4 separate sales totaling 530,000 shares for $247,136,997.60 on 2026-04-20, reducing his holdings from 2.78M to 2.25M shares. The sales occurred at prices ranging from $465.11 to $471.00 (blended $466.30), while the current market price stands at $29.95—a dramatic valuation gap that appears to reflect a significant corporate action, reverse split, or data reporting anomaly rather than a direct stock performance comparison. The 19.1% reduction in his position size is material, though post-transaction holdings of 2.25M shares indicate he retained a substantial stake. Without visibility into transaction timing flags, market conditions at execution, or the executive's prior trading history, the divestiture registers as a material stock reduction by a senior operating executive.