X0306 4 2018-03-19 false 0001688941 Foundation Building Materials, Inc. FBM 0001697573 Welly Peter 2741 WALNUT AVE, SUITE 200 TUSTIN CA 92780 false true false false Chief Operating Officer Restricted Stock Unit 2018-03-19 4 A false 18262.00 0.00 A Common Stock 18262.00 18262.00 D Stock Option (Right to Purchase) 15.40 2018-03-19 4 A false 38369.00 0.00 A 2028-03-19 Common Stock 38369.00 38369.00 D Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of FBM common stock or the cash equivalent based on the date of vesting. The RSUs vest in four equal annual installments on each of March 12, 2019, March 12, 2020, March 12, 2021 and March 12, 2022. The stock options vest in four equal annual installments on each of March 12, 2019, March 12, 2020, March 12, 2021 and March 12, 2022. /s/ Richard Tilley, Attorney-in-Fact 2018-03-20