BLACKLINE, INC. — Director's Dealing 2025

Apr 4, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BLACKLINE, INC. (BL)
CIK: 0001666134
Period of Report: 2025-04-02

Reporting Person: Tucker Therese (Director, CO-CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-04-02	Common Stock	A	76250	—	Acquired	363819	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	100178	Indirect
Common Stock	1509881	Indirect
Common Stock	54074	Indirect
Common Stock	577200	Indirect
Common Stock	577200	Indirect
Common Stock	79516	Indirect
Common Stock	874128	Indirect
Common Stock	129897	Indirect
Common Stock	250916	Indirect

Footnotes

F1: Each share is represented by a Restricted Stock Unit ("RSU"). 25% of the RSUs will vest on the one (1) year anniversary of February 20, 2025 (the "RSU Vesting Commencement Date"), and 1/16th of the RSUs will vest every three months thereafter on the same day of the month as the RSU Vesting Commencement Date, subject to the reporting person's continued service through each applicable vesting date.

F2: Total number of shares reflects an immaterial change in the number of shares gifted by the reporting person as previously reported.