BLACKLINE, INC. 8-K

What Happened
BlackLine, Inc. (BL) announced that on December 19, 2025 Thomas Unterman informed the board he will not stand for re-election at the company’s 2026 annual meeting of stockholders. Mr. Unterman will continue to serve as a director and as a member of the Board’s Compensation Committee and Nominating and Corporate Governance Committee until his term ends. The company said his decision is not the result of any disagreement with BlackLine.

Key Details

• Date of notice: December 19, 2025; 8-K filed December 22, 2025.
• Director: Thomas Unterman; will remain in his board and committee roles through the end of his term.
• Board size: The Board expects to reduce from 12 directors to 11 immediately following the 2026 election of directors.
• No disagreement with the company was reported as the reason for his decision.

Why It Matters
This filing documents a forthcoming change in BlackLine’s board composition that investors should note for corporate governance and proxy-season watchlists. Because Mr. Unterman will remain in place until his term expires and the company states no disagreement precipitated his decision, the change appears orderly. Investors may want to review upcoming proxy materials and the slate of director nominees for the 2026 annual meeting to see who, if anyone, will fill the vacancy or whether the Board will permanently reduce its size.