A A company is a legal subject with a legal entity that requires a Board of Directors as an organ to manage and represent the company both inside and outside of court. In the course of its business, the company has financing facilities through partnerships with banks to facilitate financial transactions, including working capital and funding for business partners. Banks can facilitate the smooth execution of payment transactions, ensuring smooth and fair cash flow management, which is commonly referred to as the Financial Supply Chain. The President Director of PT Waskita Karya has abused his authority (Ultra Vires) by disbursing supply chain financing using fraudulent supporting documents. The issues to be discussed are: How does the application of the ultra vires doctrine apply to the unlawful act committed by the President Director of PT Waskita Karya regarding the misappropriation of the supply chain financing according to applicable provisions? And what legal consequences can be imposed on the President Director of PT Waskita Karya regarding the misappropriation of the supply chain financing according to applicable provisions? The research method is normative, descriptive, using secondary data, analyzed qualitatively, and concluded using a deductive method. The disbursement of supply chain financing that was used for improper purposes can be called an Ultra Vires act. The President Director, in this case, acted beyond his authority in violation of Article 3 of the Articles of Association of PT Waskita Karya. The responsibility of the board of directors in this case, based on Article 97 Paragraph 3 of Law Number 40 of 2007, is that the directors must be held personally responsible.