CHANGZHOU, China – November 03, 2026 -- Nasdaq-listed STAK Inc. (Nasdaq: STAK) replaced its Chief Financial Officer effective November 1, 2026, appointing Xiaofei Han, a former U.S.-listed company auditor with about 20 years of experience, while its Chief Technology Officer also stepped down.

STAK appoints Han, a Deloitte and Marcum alumnus, as CFO effective November 1

Han spent July 2007 to January 2011 as a Senior Auditor at the Guangzhou Branch of Deloitte Touche Tohmatsu Certified Public Accountants LLP. He then worked at Marcum Bernstein & Pinchuk LLP from February 2011 to June 2017 as an Audit Manager and Senior Manager.

At Marcum, he handled audit services for U.S.-listed companies and IPO audits for companies preparing to go public. Since 2017, he has advised Chinese companies seeking U.S. capital markets listings. He founded Guangzhou Jingtian Enterprise Consulting Co., Ltd. in August 2019.

Han holds a Bachelor of Management from Sun Yat-sen University and is a member of the Chinese Institute of Certified Public Accountants (CICPA).

CFO Diana Li and CTO Ke Dennis Xu resign effective October 31, 2026

Diana Li left the CFO role on October 31, 2026, one day before Han's start date. Ke Dennis Xu resigned as Chief Technology Officer on the same date.

STAK stated that the resignations were not the result of any disagreement with the Company. The announcement named no successor for the CTO position.

STAK sells specialized oilfield vehicles built on third-party chassis

STAK designs and manufactures oilfield-specialized production and maintenance equipment. It works with qualified specialized vehicle manufacturers to integrate that equipment onto vehicle chassis, producing specialized oilfield vehicles for sale. The Company also sells equipment components and related products and provides automation solutions.