FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2026OR (Address of principal executive offices)(zip code) (772) 617-4340 Securities registered pursuant to Section 12(b) of the Act: Indicate by check mark whether the registrant (1) hasfiled all reports required to befiled by Section13 or 15(d) of the SecuritiesExchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required tofile such reports) and (2) hasbeen subject to suchfiling requirements for the past 90 days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuantto Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant wasrequired to submit suchfiles).Yes☒No☐ Indicate by check mark whether the registrant is a large acceleratedfiler, an acceleratedfiler, a non-acceleratedfiler, a smaller reportingcompany or an emerging growth company.See the definitions of "large acceleratedfiler," "acceleratedfiler" "smaller reporting company" and"emerging growth company" in Rule12b-2 of the Exchange Act. Large acceleratedfiler☒Acceleratedfiler☐Non-acceleratedfiler☐Smaller reporting company☐Emerging growth company☐ If an emerging growth company, indicate by a check mark if the registrant has elected not to use the extended transition period forcomplying with any new or revisedfinancial accounting standards provided pursuant to Section 13(a) of the Exchange Act☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Exchange Act).Yes☐No☒ The number of outstanding shares of the Registrant’s common stock as of April21, 2026 was 124,046,116. PART I. Financial Information1Item 1. Financial Statements1Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations26Item 3. Quantitative and Qualitative Disclosures about Market Risk49Item 4. Controls and Procedures53PART II. Other Information54Item 1.Legal Proceedings54Item IA. Risk Factors54Item 2. Unregistered Sales of Equity Securities and Use of Proceeds54Item 3. Defaults Upon Senior Securities54Item 4. Mine Safety Disclosures54Item 5. Other Information54Item 6. Exhibits55Signatures56 See consolidatedfinancial statement notes (unaudited). References to "we," "us," "our," or the "Company" are to ARMOUR Residential REIT, Inc. ("ARMOUR") and its subsidiary. References to"ACM" are to ARMOUR Capital Management LP, a Delaware limited partnership. ARMOUR owns a 10.8% equity interest in BUCKLER Securities LLC("BUCKLER"). BUCKLER is a Delaware limited liability company and a FINRA-regulated broker-dealer. ACM and BUCKLER are under commoncontrol. Refer to the Glossary of Terms for definitions of capitalized terms and abbreviations used in this report. U.S. dollar and share amounts arepresented in thousands, except per share amounts or as otherwise noted. We are an externally managed Maryland corporation incorporated in 2008, managed by ACM, an investment advisor registered with theSecurities and Exchange Commission (the "SEC"), (see Note 8 - Commitments and Contingencies and Note 13 - Related Party Transactions). Wehave elected to be taxed as a real estate investment trust ("REIT") under the Internal Revenue Code of 1986, as amended (the "Code"). Ourqualification as a REIT depends on our ability to meet, on a continuing basis, various complex requirements under the Code relating to, amongother things, the sources of our gross income, the composition and values of our assets, our distribution levels and the concentration ofownership of our capital stock. We believe that we are organized in conformity with the requirements for qualification as a REIT under the Codeand our manner of operations enables us to meet the requirements for taxation as a REIT for federal income tax purposes. As a REIT, we willgenerally not be subject to federal income tax on the REIT taxable income that we currently distribute to our stockholders. If we fail to qualify as aREIT in any taxable year and do not qualify for certain statutory relief provisions, we will be subject to federal income tax at regular corporaterates. Even if we qualify as a REIT for U.S. federal income tax purposes, we may still be subject to some federal, state and local taxes on ourincome. At March 31, 2026 and December 31, 2025, our investments in securities included mortgage backed securities ("MBS"), issued orguaranteed by a United States ("U.S.") Government-sponsored entity ("GSE"), such as the Federal National Mortgage Association ("Fannie Mae"),theFederal Home Loan Mortgage Corporation ("Freddie Mac"), or a government agency such as Government National Mortgage Administration("Ginnie Mae") (collectively, "Agency Securities") and U.S. Treasury Securities. Our charter permits us to invest in M