BLACKLINE, INC. — Director's Dealing 2023

Feb 23, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BLACKLINE, INC. (BL)
CIK: 0001666134
Period of Report: 2023-02-17

Reporting Person: Partin Mark (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-17	Common Stock	F	5970	$71.72	Disposed	160343	Direct
2023-02-21	Common Stock	M	15000	$14.00	Acquired	175343	Direct
2023-02-21	Common Stock	S	884	$70.0301	Disposed	174459	Direct
2023-02-21	Common Stock	S	9129	$70.6163	Disposed	165330	Direct
2023-02-21	Common Stock	S	4987	$71.466	Disposed	160343	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-02-21	Stock Option (Right to Buy)	$14.00	M	15000	Disposed	2025-03-29	Common Stock (15000)	Direct

Footnotes

F1: The reported shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units.

F2: 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.

F3: The sale price represents the weighted-average price of shares sold ranging from $69.120 to $70.100 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 sale price represents the weighted-average price of shares sold ranging from $70.12 to $71.115 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.

F5: The sale price represents the weighted-average price of shares sold ranging from $71.15 to $71.82 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.

F6: The option is fully vested and immediately exercisable.