BLACKLINE, INC. — Director's Dealing 2024

Oct 2, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BLACKLINE, INC. (BL)
CIK: 0001666134
Period of Report: 2024-10-01

Reporting Person: Morgan-Prager Karole (CHIEF LEGAL AND ADMINISTRATIVE)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-10-01	Common Stock	M	10000	$14.00	Acquired	123865	Direct
2024-10-01	Common Stock	S	25	$54.71	Disposed	123840	Direct
2024-10-01	Common Stock	S	9975	$54.03	Disposed	113865	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-10-01	Stock Option (Right to Buy)	$14.00	M	10000	Disposed	2026-10-16	Common Stock (10000)	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 8, 2024.

F2: The sale price represents the weighted average price of shares sold ranging from $53.60 to $54.52 per share, and is rounded to the nearest tenth of a cent. 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 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.