BLACKLINE, INC. — Director's Dealing 2021

Sep 10, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BLACKLINE, INC. (BL)
CIK: 0001666134
Period of Report: 2021-09-10

Reporting Person: Partin Mark (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-09-10	Common Stock	M	5000	$14.00	Acquired	99149	Direct
2021-09-10	Common Stock	S	2977	$120.2421	Disposed	96172	Direct
2021-09-10	Common Stock	S	2023	$121.0006	Disposed	94149	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-09-10	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 March 12, 2021.

F2: The sale price represents the weighted-average price of shares sold ranging from $119.66 to $120.62 per share. Upon request by the Securities and Exchange 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.

F3: The sale price represents the weighted-average price of shares sold ranging from $120.69 to $121.44 per share. Upon request by the Securities and Exchange 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.

F4: The shares subject to the option vest in 4 equal, annual installments beginning on the one year anniversary of January 20, 2015.