X0306 4 2016-06-07 0001156041 HOUSTON AMERICAN ENERGY CORP HUSA 0001553571 Grimes R. Keith 801 TRAVIS STREET, SUITE 1425 HOUSTON TX 77002 true Stock Option (Right to Buy) 1.18 2013-01-02 2022-07-02 Common Stock 25000 25000 D Stock Option (Right to Buy) 0.3075 2013-12-11 2023-06-11 Common Stock 25000 25000 D Stock Option (Right to Buy) 0.415 2014-12-10 2024-06-10 Common Stock 50000 50000 D Stock Option (Right to Buy) 0.2028 2015-12-09 2025-06-09 Common Stock 50000 50000 D Stock Option (Right to Buy) 0.2201 2016-06-07 4 A 0 50000 0 A 2016-12-07 2026-06-07 Common Stock 50000 50000 D Stock Option (Right to Buy) 0.2201 2016-06-07 4 A 0 150000 0 A 2017-06-07 2026-06-07 Common Stock 150000 150000 D The options were granted on June 7, 2016 and are exercisable six months from the date of grant, subject to vesting. The options vest 20% on the date of grant and 80% nine months from the grant date. The options were granted on June 7, 2016 and are exercisable six months from the date of grant, subject to vesting. The options vest (a) 50% on the earlier of (i) June 7, 2017, or (ii) the day prior to the next annual shareholders' meeting, and (b) 50% on the earlier of (ii) June 7, 2018, or (ii) the day prior to the second annual shareholders' meeting following the grant date; provided that (c) all unvested options will vest upon completion of a transaction(s) involving the issuance of equity securities providing not less than $2 million of additional shareholders' equity. /s/ R. Keith Grimes 2016-06-09