Form 4 Filing for Blackline, Inc.

This filing details transactions by Karole Morgan-Prager, Chief Legal and Administrative officer of Blackline, Inc. On February 20, 2026, Morgan-Prager acquired a total of 15,678 shares of Common Stock through the vesting of performance-based restricted stock units (PRSUs). These PRSUs vested based on the achievement of certain performance targets for fiscal years 2023, 2024, and 2025. The reported shares were acquired at a price of $36.15 per share. Additionally, 15,103 shares were withheld to cover tax liabilities in connection with the vesting of PRSUs and restricted stock units. Following these transactions, the post-transaction shares owned by Morgan-Prager are reported as 119,149.