BLACKLINE, INC. — Director's Dealing 2023

May 2, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BLACKLINE, INC. (BL)
CIK: 0001666134
Period of Report: 2023-05-01

Reporting Person: Partin Mark (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-05-01	Common Stock	M	5000	$14.00	Acquired	204479	Direct
2023-05-01	Common Stock	S	5000	$55.42	Disposed	199479	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-05-01	Stock Option (Right to Buy)	$14.00	M	5000	Disposed	2025-03-29	Common Stock (5000)	Direct

Footnotes

F1: The sale transaction reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2022.

F2: The option is fully vested and immediately exercisable.