ESS Tech, Inc. 8-K

What Happened ESS Tech, Inc. (filed 8-K on June 18, 2026) announced that director Rich Hossfeld resigned from the company’s board of directors and its Audit Committee effective June 12, 2026. The company stated the resignation was not due to any disagreement with ESS Tech on operations, policies, or practices. Raffi Garabedian was named to replace Mr. Hossfeld on the Audit Committee effective June 12, 2026.

Key Details

• Resignation effective date: June 12, 2026 (Rich Hossfeld).
• Audit Committee replacement: Raffi Garabedian, effective June 12, 2026.
• Filing: Form 8-K submitted June 18, 2026 (Item 5.02 disclosure).
• Company statement: Resignation not due to any disagreement; company thanked Mr. Hossfeld for his service.

Why It Matters This is a governance update affecting the board and the Audit Committee, which oversees financial reporting and controls. Because the company confirmed the departure was not due to any disagreement and promptly named a replacement, the change is a routine board-level adjustment rather than a sign of internal conflict. Investors tracking corporate governance or audit oversight should note the committee membership change and the effective date.