Thomas Unterman - 01 Sep 2021 Form 4 Insider Report for BLACKLINE, INC. (BL)

Role: Director
Signature: /s/ Karole Morgan-Prager, Attorney-in-Fact
Issuer symbol: BL
Transactions as of: 01 Sep 2021
Net transactions value: -$53,446
Form type: 4
Filing time: 02 Sep 2021, 19:02:20 UTC
Previous filing: 04 Aug 2021
Next filing: 24 Feb 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BL	Common Stock	Options Exercise	$5,000	+1,000	+2.3%	$5.00	44,467	01 Sep 2021	Direct	F1
transaction	BL	Common Stock	Tax liability	$5,027	-46	-0.1%	$109.28	44,421	01 Sep 2021	Direct	F1, F2
transaction	BL	Common Stock	Sale	$53,419	-477	-1.1%	$111.99	43,944	02 Sep 2021	Direct	F1
holding	BL	Common Stock						50,000	01 Sep 2021	ETU Rustic Canyon Trust

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BL	Stock Option (Right to Buy)	Options Exercise	$0	-1,000	-9.5%	$0.000000	9,500	01 Sep 2021	Common Stock	1,000	$5.00	Direct	F1, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The sale transaction reported on this Form 4 was effectuated pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 12, 2021.
F2	Represents shares withheld to pay the exercise price of the Reporting Person's option.
F3	The option is fully vested and immediately exercisable.