X0306 4 2020-05-06 0 0001666134 BLACKLINE, INC. BL 0001688099 Babcoke Jason C/O SILVER LAKE SUMERU 2020 PIONEER COURT SAN MATEO CA 94403 1 0 0 0 Common Stock 2020-05-06 4 A 0 3008 0.00 A 4841 D Reflects automatic annual restricted stock unit ("RSU") awards pursuant to the Issuer's Outside Director Compensation Policy. The reported securities awarded on May 6, 2020 (the "Award Date") represent RSUs which vest in full upon the earlier of the one (1) year anniversary of the Award Date or the day prior to the Issuer's next annual meeting of the stockholders and in each case subject to the Reporting Person's continued service on the Issuer's board of directors through the vesting date. /s/ Jason Babcoke 2020-05-08