X0609 4 2026-06-11 0001703956 Concrete Pumping Holdings, Inc. BBCP 0001760635 Humphries Iain false C/O CONCRETE PUMPING HOLDINGS, INC. 500 E. 84TH AVENUE, SUITE A-5 DENVER CO 80229 1 1 CFO and Secretary 0 Common Stock 2026-06-11 4 S 0 96955 10.7915 D 377812 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.5000 to $11.1400, 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 sold at each separate price within the ranges set forth in this footnote. /s/ Iain Humpries 2026-06-12