X0306 4 2016-08-08 0 0001093082 HUTTIG BUILDING PRODUCTS INC HBP 0001240554 VRABELY JON P C/O HUTTIG BUILDING PRODUCTS, INC. 555 MARYVILLE UNIVERSITY DR. SUITE 400 ST. LOUIS MO 63141 1 1 0 0 President & CEO Common Stock 2016-08-08 2016-08-08 4 D 0 42804 6.337 D 1076895 D Common Stock 2016-08-09 2016-08-09 4 D 0 28587 6.472 D 1048308 D Common Stock 8936.79 I By 401 (K) Trustee The price reported reflects the weighted average share price. The shares were sold in multiple transactions ranging from $6.13 to $6.47, inclusive. The reporting person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. The price reported reflects the weighted average share price. The shares were sold in multiple transactions ranging from $6.381 to $6.652, inclusive. The reporting person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. /s/ Rebecca L Kujawa, by Power of Attorney 2016-08-10