BLACKLINE, INC. — Director's Dealing 2021

Aug 24, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BLACKLINE, INC. (BL)
CIK: 0001666134
Period of Report: 2021-08-20

Reporting Person: Woodhams Mark (Chief Revenue Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-08-20	Common Stock	F	3260	$106.41	Disposed	53257	Direct
2021-08-23	Common Stock	M	23333	$49.04	Acquired	76590	Direct
2021-08-23	Common Stock	S	798	$105.8055	Disposed	75792	Direct
2021-08-23	Common Stock	S	5272	$106.9308	Disposed	70520	Direct
2021-08-23	Common Stock	S	5966	$107.6743	Disposed	64554	Direct
2021-08-23	Common Stock	S	11297	$108.6884	Disposed	53257	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-08-23	Stock Option (right to buy)	$49.04	M	23333	Disposed	2028-08-07	Common Stock (23333)	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 May 21, 2021.

F3: The sale price represents the weighted-average price of shares sold ranging from $105.28 to $106.27 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 $106.29 to $107.24 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 $107.33 to $108.27 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 sale price represents the weighted-average price of shares sold ranging from $108.29 to $109.22 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.

F7: 25% of the shares subject to the option will vest on the one (1) year anniversary of August 20, 2018 (the "Annual Option Vesting Commencement Date"), and 1/16th of the remaining shares subject to the option will vest every three months thereafter on the same day of the month as the Annual Option Vesting Commencement Date, subject to the Reporting Person's continued service through each applicable vesting date.