X0306 4 2022-08-11 0 0001389002 MARIN SOFTWARE INC MRIN 0001796238 Bertz Robert C/O MARIN SOFTWARE INCORPORATED 123 MISSION ST, 27TH FLOOR SAN FRANCISCO CA 94105 0 1 0 0 CFO Common Stock 2022-08-11 4 M 0 27500 0.00 A 42248 D Common Stock 2022-08-11 4 F 0 11270 1.8601 D 30978 D Restricted Stock Units (RSU) 2022-08-11 4 M 0 27500 0.00 D Common Stock 27500 27500 D Exempt transaction pursuant to Section 16b-3(e) - payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. The shares reported as disposed of were relinquished by the Reporting Person and cancelled by the Issuer in exchange for the Issuer's agreement to pay federal and state tax withholding obligations of the Reporting Person resulting from the vesting of restricted stock units ("RSUs"). The Reporting Person did not sell or otherwise dispose of any of the shares reported on this Form 4 for any reason other than to cover required taxes. Each RSU represents a contingent right to receive one (1) share of the Issuer's common stock upon settlement. 50% of the RSUs vest on each of August 11, 2022 and August 11, 2023, subject to the continuing employment of the Reporting Person on each vesting date. Shares of the Issuer's common stock will be delivered to the Reporting Person upon vesting. /s/ Robert Bertz 2022-08-15