BLACKLINE, INC. — Director's Dealing 2024

Sep 30, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BLACKLINE, INC. (BL)
CIK: 0001666134
Period of Report: 2024-09-27

Reporting Person: Partin Mark (CHIEF FINANCIAL OFFICER)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-09-27	Common Stock	M	3033	$14.00	Acquired	229877	Direct
2024-09-27	Common Stock	S	3033	$53.00	Disposed	226844	Direct
2024-09-27	Common Stock	M	2615	$14.00	Acquired	229459	Direct
2024-09-27	Common Stock	S	2615	$53.00	Disposed	226844	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-09-27	Stock Option (Right to Buy)	$14.00	M	3033	Disposed	2025-03-29	Common Stock (3033)	Direct
2024-09-27	Stock Option (Right to Buy)	$14.00	M	2615	Disposed	2026-10-16	Common Stock (2615)	Direct

Footnotes

F1: The transaction reported on this Form 4 was effectuated pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2024.

F2: The options became exercisable based on the following vesting schedule: The shares subject to the option vested in 4 equal, annual installments beginning on the one-year anniversary of the grant date, subject to the reporting person's continued service through each applicable vesting date.