BLACKLINE, INC. — Director's Dealing 2020

May 13, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BLACKLINE, INC. (BL)
CIK: 0001666134
Period of Report: 2020-05-11

Reporting Person: THOMPSON KEVIN B (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-05-11	Common Stock	M	3633	$34.12	Acquired	14104	Direct
2020-05-11	Common Stock	S	7239	$64.6007	Disposed	6865	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-05-11	Stock Option (right to buy)	$34.12	M	3633	Disposed	2027-09-30	Common Stock (3633)	Direct

Footnotes

F1: The sale price represents the weighted-average price of shares sold ranging from $64.47 to $64.73 per share. Upon request by the Securities and Exchange Commission (the Commission) staff, the Issuer or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

F2: 100% of the shares subject to the option will vest upon the earlier of October 1, 2018 or the day prior to the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service through the applicable vesting date.