BLACKLINE, INC. — Director's Dealing 2021

Nov 9, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BLACKLINE, INC. (BL)
CIK: 0001666134
Period of Report: 2021-11-05

Reporting Person: HIRSCH PETER (Chief Technology Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-11-05	Common Stock	M	9912	$52.54	Acquired	44821	Direct
2021-11-05	Common Stock	S	3142	$130.8183	Disposed	41679	Direct
2021-11-05	Common Stock	S	3920	$131.6046	Disposed	37759	Direct
2021-11-05	Common Stock	S	1300	$132.6119	Disposed	36459	Direct
2021-11-05	Common Stock	S	850	$133.4647	Disposed	35609	Direct
2021-11-05	Common Stock	S	700	$134.4243	Disposed	34909	Direct
2021-11-08	Common Stock	M	4970	$52.54	Acquired	39879	Direct
2021-11-08	Common Stock	S	4770	$130.3992	Disposed	35109	Direct
2021-11-08	Common Stock	S	200	$131.055	Disposed	34909	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-11-05	Stock Option (right to buy)	$52.54	M	9912	Disposed	2029-02-25	Common Stock (9912)	Direct
2021-11-08	Stock Option (right to buy)	$52.54	M	4970	Disposed	2029-02-25	Common Stock (4970)	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 November 11, 2020, amended on March 12, 2021.

F2: The sale price represents the weighted-average price of shares sold ranging from $130.17 to $131.11 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 $131.20 to $132.15 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 $132.21 to $132.99 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 $133.23 to $133.815 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 $134.26 to $134.665 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: The sale price represents the weighted-average price of shares sold ranging from $130.00 to $130.99 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.

F8: The sale price represents the weighted-average price of shares sold ranging from $131.05 to $131.06 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.

F9: 25% of the options vested on February 20, 2020 and 1/16th of the remaining shares subject to the option will vest every three months thereafter, subject to the Reporting Person's continued service through the applicable vesting date.