X0306 4 2016-05-19 0 0001140310 EnSync, Inc. ESNC 0001271449 KOEPPE PAUL F N93 W14475 WHITTAKER WAY MENOMONEE FALLS WI 53051 1 0 0 0 Common Stock 2016-05-19 4 P 0 20000 0.3726 A 817154 D Common Stock 2016-05-20 4 P 0 10000 0.365 A 827154 D The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $0.3651 to $0.38, inclusive. The reporting person undertakes to provide to EnSync, Inc., any security holder of EnSync, 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 this footnote (1) to this Form 4. /s/ Paul F. Koeppe by Mark R. Busch, attorney-in-fact 2016-05-23