Therese Tucker - 18 May 2021 Form 4 Insider Report for BLACKLINE, INC. (BL)

Role: Executive Chair, Director
Signature: /s/ Karole Morgan-Prager, Attorney-in-Fact
Issuer symbol: BL
Transactions as of: 18 May 2021
Net transactions value: -$1,039,735
Form type: 4
Filing time: 20 May 2021, 18:08:17 UTC
Next filing: 21 May 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BL	Common Stock	Sale	$71,320	-700	-0.03%	$101.89	2,197,782	18 May 2021	Brian & Therese Tucker Living Trust	F1, F2
transaction	BL	Common Stock	Sale	$72,283	-700	-0.03%	$103.26	2,197,082	18 May 2021	Brian & Therese Tucker Living Trust	F1, F3
transaction	BL	Common Stock	Sale	$416,334	-4,014	-0.18%	$103.72	2,193,068	18 May 2021	Brian & Therese Tucker Living Trust	F1, F4
transaction	BL	Common Stock	Sale	$479,797	-4,586	-0.21%	$104.62	2,188,482	18 May 2021	Brian & Therese Tucker Living Trust	F1, F5
holding	BL	Common Stock						172,379	18 May 2021	Direct
holding	BL	Common Stock						874,128	18 May 2021	Tucker Legacy Trust
holding	BL	Common Stock						577,200	18 May 2021	Isaac Tucker 2012 Irrevocable Trust
holding	BL	Common Stock						577,200	18 May 2021	Roseanna Tucker 2012 Irrevocable Trust
holding	BL	Common Stock						250,916	18 May 2021	Tucker Seimetz Safety Net Trust
holding	BL	Common Stock						54,074	18 May 2021	Claire Seimetz 2015 Trust

* 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 effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 27, 2020.
F2	The sale price represents the weighted-average price of shares sold ranging from $101.39 to $102.31 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 $102.98 to $103.325 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 $103.445 to $104.175 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 $104.435 to $104.81 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.