X0306 4 2020-08-06 0 0000927003 ADVANCED ENERGY INDUSTRIES INC AEIS 0001416894 WASSERMAN YUVAL 1595 WYNKOOP STREET, SUITE 800 DENVER CO 80202 1 1 0 0 CEO Common Stock 2020-08-06 4 S 0 1971 75.559 D 167977 D Common Stock 2020-08-06 4 S 0 2829 76.418 D 165148 D Common Stock 2020-08-06 4 S 0 200 77.64 D 164948 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 20, 2020. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.92 to $75.92, inclusive. The reporting person undertakes to provide to Advanced Energy Industries, Inc., any security holder of Advanced Energy Industries, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.95 to $76.83, inclusive. The reporting person undertakes to provide to Advanced Energy Industries, Inc., any security holder of Advanced Energy Industries, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $77.18 to $78.10, inclusive. The reporting person undertakes to provide to Advanced Energy Industries, Inc., any security holder of Advanced Energy Industries, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the preceding sentence. Represents 52,313 shares of unvested restricted stock units and 112,635 shares of common stock. /s/ Thomas O. McGimpsey - Attorney-in-Fact 2020-08-10