A Delaware Corporation 900 East Green StreetBensenville, IL 60106________________________________ Telephone: (847) 295-7000Email: info@rubicontechnology.com________________________________ Federal EIN: 36-4419301SIC Code: 5065 2025 Annual ReportFor the period ended December 31, 2025 ISSUER’S EQUITY SECURITIES COMMON STOCK Common Stock$0.001 Par Value Per Share11,000,000 Shares Authorized9,377,815 and 2,377,815 Shares Outstanding as of December 31, 2025, and December 31, 2024, respectively.OTCID: RBCN Indicate by check mark whether the company is a shell company (as defined in Rule 405 of the Securities Act of1933 and Rule 12b-2 of the Exchange Act of 1934):Yes:No: X Indicate by check mark whether the company’s shell status has changed since the previous reporting period:Yes:No: X Indicate by check mark whether a Change in Control of the company has occurred over this reporting period:Yes: XNo: Rubicon Technology, Inc. is responsible for the content of this Annual Report. The securitiesdescribed in this document are not registered with, and the information contained in this reporthas not been filed with, or approved by, the U.S. Securities and Exchange Commission. TABLE OF CONTENTS PART A.GENERAL COMPANY INFORMATION4 PART B.SHARE STRUCTURE5The Exact Title and Class of Securities Outstanding5Par or Stated Value and Description of the Security5The Number of Shares or Total Amount of the SecuritiesOutstanding for Each Class of Securities Authorized5Issuer Purchases of Equity Securities6 PART D.MANAGEMENT STRUCTURE AND FINANCIAL INFORMATION18Changes in Management Structure During 202518Officers and Directors18Compensation of Officers and Directors19Beneficial Share Ownership of Officers and Directors20Legal/Disciplinary History20Disclosure of Family Relationships20Disclosure of Related Party Transactions20Disclosure of Conflicts of Interest21Beneficial Owners21Financial Reporting21Third Party Advisors22Management’s Discussion and Analysis of Financial Condition andResults of Operations22 PART E.ISSUANCE HISTORY AND FINANCIAL INFORMATION26List of the Securities Offerings and Shares Issued in the Past TwoYears26Financial Reporting26 PART F.EXHIBITS 27 RUBICON TECHNOLOGY, INC. A Delaware Corporation ANNUAL REPORT Cautionary Note Regarding Forward-Looking Statements This Annual Report ("Report") contains certain statements that are, or may be deemed to be, “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of theSecurities Exchange Act of 1934. These forward – looking statements may generally be identified usingthe words “may,” “will,” “intends,” “plans,” projects,” “believes,” “should,” “expects,” “predicts,” “anticipates,”“estimates,” and similar expressions or the negative of these terms or other comparable terminology. Thesestatementsare necessarily estimates reflecting management’s best judgment based upon currentinformation and involve several risks, uncertainties and assumptions. We caution readers not to placeundue reliance on any such forward-looking statements, which speak only as of the date made, and readersare advised that various factors, including, but not limited to, those set forth elsewhere in this Report, couldaffect our financial performance and could cause our actual results for future periods to differ materiallyfrom those anticipated or projected. While it is impossible to identify all such factors, such factors include,but are not limited to, risks related to our strategy of expanding our business through acquisitions of otherbusinesses; potential impairment of acquired assets; failure to realize expected benefits or strategicobjectives of acquisitions; expenditures related to acquisitions that are not consummated; litigation,indemnification claims, and other unforeseen liabilities arising from acquisitions; changes in tax rates, lawsor regulations and our ability to utilize anticipated tax benefits; volatile or changing interest rates; conflictsof interest with minority shareholders; insufficient working capital; loss of customers; changes in U.S. lawsor policies, including tariffs; competition from companies with greater financial resources; dependence onkey employees; impacts from climate change and sustainability requirements; terrorist attacks, acts ofviolence or war; cybersecurity breaches; catastrophic events such as health crises, natural disasters andarmed conflict; adequacy of insurance coverage; compliance with privacy, security and data laws; risksassociated with diverse information systems and platforms; dependence on third-party cargo capacity;claims arising from freight transportation and increased insurance premiums; higher carrier pricing;classification of owner-operators; recessions and economic developments affecting international trade;compliance with governmental permits and regulations; seasonal trends affecting our Logistics business;controlling influence of significant stockholders; the un