帝国石油公司美股招股说明书(2025-07-24版)

Delaware corporation (the “Company,” “we,” “us” or “our”), as of the close of business, on July 10, 2025 (the “Record Date”),subscription rights to purchase up to 33,766,388 units at $5.30 per unit (the “subscription price”), each unit consisting of 0.0139 shares right entitles the holder of the subscription rights to purchase one unit at the subscription price. We will not issue any fractional unitsor shares of common stock in the rights offering. The subscription rights are not transferable. If you fully exercise your subscriptionright and other stockholders do not fully exercise their subscription rights, you will have an over-subscription right to purchaseadditional units of common stock that remain unsubscribed at the Expiration Date (defined below).This supplement should be read in conjunction with, is not complete without, and may not be delivered or utilized except inconnection with, the prior prospectus supplement dated July 10, 2025 (including the base prospectus dated September 22, 2023),including all supplements thereto and documents incorporated by reference therein. If there is any inconsistency between theinformation in the prospectus supplement and this supplement, you should rely on the information in this supplement. warrant an extension, as we have done with this prospectus supplement, or if we decide that the degree of participation in the rightsoffering by holders of our common stock is less than the level we desire. You should carefully consider whether or not to exercise yoursubscription rights before the Expiration Date. We reserve the right to cancel the rights offering at any time before the Expiration Date,for any reason. outstanding prior to the rights offering. Mulacek has indicated his intent to participate in the rights offering and fully subscribe to theunits corresponding to his subscription rights, as well as his intent to fully exercise his over-subscription rights to purchase his pro ratashare of the underlying securities related to the rights offering that remain unsubscribed at the Expiration Date.There is no minimum number of units that we must sell in order to complete the rights offering. If you exercise yoursubscription rights in full, you will have an over-subscription right to purchase additional units that remain unsubscribed at theExpiration Date, subject to the availability and allocation of units among stockholders exercising their over-subscription rights as on page S-23 of the prospectus supplement dated July 10, 2025 and under similar headings in our filings with the Securitiesand Exchange Commission (the “SEC”), that are incorporated by reference into this prospectus supplement and theaccompanying prospectus. criminal offense.The date of this prospectus supplement is July 24, 2025