X0306 4 2021-06-04 0 0001644406 Hostess Brands, Inc. TWNK 0001688074 Jacobs Andrew Wilson C/O HOSTESS BRANDS, INC. 7905 QUIVIRA ROAD LENEXA KS 66215 0 1 0 0 See Remarks Class A Common Stock, par value $0.0001 per share 2021-06-04 4 M 0 15000 13.95 A 103250 D Class A Common Stock, par value $0.0001 per share 2021-06-04 4 M 0 78749 15.78 A 181999 D Class A Common Stock, par value $0.0001 per share 2021-06-04 4 M 0 70201 11.35 A 252200 D Class A Common Stock, par value $0.0001 per share 2021-06-04 4 M 0 19163 13.90 A 271363 D Class A Common Stock, par value $0.0001 per share 2021-06-04 4 S 0 166797 15.9638 D 104566 D Restricted Stock Units 72755 D Stock Options 13.95 2021-06-04 4 M 0 15000 0.00 D 2027-12-06 Class A Common Stock 15000 5000 D Stock Options 15.78 2021-06-04 4 M 0 78749 0.00 D 2027-03-22 Class A Common Stock 78749 0 D Stock Options 11.35 2021-06-04 4 M 0 70201 0.00 D 2029-01-10 Class A Common Stock 70201 35101 D Stock Options 13.90 2021-06-04 4 M 0 19163 0.00 D 2030-01-20 Class A Common Stock 19163 38328 D Reflects the weighted average price of sales on June 4, 2021. The shares were sold in multiple transactions at prices ranging from $15.90 to $16.12, inclusive. The reporting person undertakes to provide to Hostess Brands, Inc., any security holder of Hostess Brands, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range. Consists of previously disclosed restricted stock units that remain subject to time-based vesting criteria. Such options vested in equal or nearly equal installments on December 6 of each of 2018, 2019, and 2020 and became exercisable upon vesting. The remaining stock options will vest on December 6, 2021. All of such options vested in equal or nearly equal installments on November 4, 2017, 2018, 2019 and 2020 and became exercisable upon vesting. Such options vested in equal or nearly equal installments on January 11 of each of 2020 and 2021 and became exercisable upon vesting. The remaining stock options will vest on January 11, 2022. Such options vested and became exercisable on January 21, 2021. The remaining stock options will vest in equal or nearly equal installments on January 11 of each of 2022 and 2023. Executive Vice President, Chief Customer & Experience Officer /s/ Jolyn J. Sebree, Attorney-in-Fact 2021-06-08