X0306 4 2017-09-08 0 0001691433 BlackRock 2022 Global Income Opportunity Trust BGIO 0001326138 Castellano Michael J 55 EAST 52ND STREET NEW YORK NY 10055 1 0 0 0 Common Stock 2017-09-08 4 P 0 1000 10.0065 A 1000 D This transaction was executed in multiple trades at prices ranging from $9.995 to $10.01; the price reported reflects the weighted average price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC staff, the issuer, or a security holder of the issuer. /s/ Eugene Drozdetski as Attorney-in-Fact 2017-09-08