Form 4 Filing for Blackline, Inc.

Mika Yamamoto, a director at Blackline, Inc., reported a disposition of 3,000 shares of common stock on June 5, 2026. The shares were sold at a price of $28.4752 per share. Following this transaction, Mr. Yamamoto directly owns 16,692 shares of Blackline, Inc. common stock. The filing was signed by Karole Morgan-Prager, acting as attorney-in-fact for Mr. Yamamoto, on June 8, 2026.