Helix Acquisition Corp. II filed SEC Form 8-K: Entry into a Material Definitive Agreement, Completion of Acquisition or Disposition of Assets, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Changes in Registrant's Certifying Accountant, Material Modification to Rights of Security Holders, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Other Events, Changes in Control of Registrant, Leadership Update, Amendments to the Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics, Change in Shell Company Status, Regulation FD