X0306 4 2020-04-16 0001703956 Concrete Pumping Holdings, Inc. BBCP 0001112508 BROWN DAVID A B C/O CONCRETE PUMPING HOLDINGS, INC. 500 E. 84TH AVENUE, SUITE A-5 DENVER CO 80229 1 Common Stock 2020-04-16 4 P 0 10590 2.02 A 75601 I By David A.B. Brown Pension Plan Common Stock 2020-04-16 4 P 0 7825 2.02 A 83426 I By David A.B. Brown Roth 401K The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.00 to $2.03, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.01 to $2.03, inclusive. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote. /s/ Joel Rubinstein, Attorney-in-Fact 2020-04-16