Kelley Stephen Douglas 4

What Happened
Kelley Stephen Douglas, President & CEO and a director of Advanced Energy Industries, sold 50,000 shares in multiple open-market transactions on March 10, 2026. The individual trades ranged in price from $305.48 to $321.13 and generated total proceeds of approximately $15,830,829. The filing indicates these sales were made pursuant to a Rule 10b5-1 trading plan adopted on December 5, 2025.

Key Details

• Transaction date: March 10, 2026; Form 4 filed March 12, 2026 (timely filing).
• Total shares sold: 50,000; total proceeds: ~$15.83 million.
• Price range reported: $305.48 to $321.13; several blocks reported as weighted-average prices with per-block ranges (see footnotes F2–F13).
• Footnotes: F1 = sale pursuant to a 10b5-1 plan (adopted Dec 5, 2025). F2–F13 = weighted-average sale prices with ranges; the filer offers to provide per-price breakdown on request.
• Shares owned after transaction: not specified in the provided filing.

Context
Sales under a 10b5-1 plan are prearranged dispositions and are generally treated as routine trading rather than a direct signal of the insider’s current view of the company. For retail investors, purchases are typically given more weight as positive signals; this disclosure documents a significant, pre-planned sale by the CEO. If you need the per-transaction price breakdown within the reported ranges, the filing notes the reporting person will provide those details upon request.