Michelle D. Stalick - 20 Feb 2026 Form 4 Insider Report for BLACKLINE, INC. (BL)

Role: Chief Accounting Officer
Signature: /s/ Karole Morgan-Prager, Attorney-in-Fact
Issuer symbol: BL
Transactions as of: 20 Feb 2026
Net transactions value: -$54,044
Form type: 4
Filing time: 24 Feb 2026, 17:45:43 UTC
Previous filing: 24 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Stalick Michelle D	Chief Accounting Officer	21300 VICTORY BLVD., 12TH FLOOR, WOODLAND HILLS	/s/ Karole Morgan-Prager, Attorney-in-Fact	24 Feb 2026	0001603300

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BL	Common Stock	Options Exercise	$48,694	+1,347	+5.8%	$36.15	24,436	20 Feb 2026	Direct	F1
transaction	BL	Common Stock	Tax liability	$102,738	-2,842	-12%	$36.15	21,594	20 Feb 2026	Direct	F2

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

Explanation of Responses:

Id	Content
F1	The reported shares relate to the portion of a Performance Based Restricted Stock Unit ("PRSU") granted on April 2, 2025 that has vested based on the Issuer's achievement of certain fiscal 2025 performance targets that were set by the Compensation Committee at the time of grant.
F2	The reported shares were withheld to cover the reporting person's tax liability in connection with the vesting of PRSUs and restricted stock units.