Results of Operations and Financial Condition. On October 19, 2026, Dynex Capital, Inc. (the "Company") issued a press release announcing its financial results as of and for the quarter ended September 30, 2026. The text of the aforementioned press release is included as Exhibit 99.1 to this Form 8-K and is also available on the Company's website (www.dynexcapital.com under “Investors/News & Market Information”). The press release included the following financial information: Third Quarter 20…

Material Modifications to Rights of Security Holders. As previously disclosed, on September 22, 2026, Dynex Capital, Inc. (the “ Company ”), entered into an underwriting agreement (the “ Underwriting Agreement ”) with Morgan Stanley & Co. LLC, J.P. Morgan Securities LLC, RBC Capital Markets, LLC, UBS Securities LLC, Wells Fargo Securities, LLC, Citigroup Global Markets Inc., Goldman Sachs & Co. LLC and Keefe, Bruyette & Woods, Inc., acting as representatives of the several underwriters listed…

Entry into a Material Definitive Agreement. On September 22, 2026, Dynex Capital, Inc. (the “ Company ”), entered into an underwriting agreement (the “ Underwriting Agreement ”) with Morgan Stanley & Co. LLC, J.P. Morgan Securities LLC, RBC Capital Markets, LLC, UBS Securities LLC, Wells Fargo Securities, LLC, Citigroup Global Markets Inc., Goldman Sachs & Co. LLC and Keefe, Bruyette & Woods, Inc., acting as representatives of the several underwriters listed on Schedule 1 thereto (collectivel…

Entry into a Material Definitive Agreement. On July 28, 2026, Dynex Capital, Inc. (the “Company”), entered into amendment no. 10 (“Amendment No. 10”) to the distribution agreement, dated June 29, 2018, as amended on May 31, 2019, August 3, 2021, June 3, 2022, February 10, 2023, October 29, 2024, May 1, 2025, July 29, 2025, January 27, 2026, and April 28, 2026 (the “Agreement” and, as amended by Amendment No. 10, the “Amended Agreement”), by and among the Company, on the one hand, and BTIG, LL…

Results of Operations and Financial Condition. On July 20, 2026, Dynex Capital, Inc. (the "Company") issued a press release announcing its financial results as of and for the quarter ended June 30, 2026. The text of the aforementioned press release is included as Exhibit 99.1 to this Form 8-K and is also available on the Company's website (www.dynexcapital.com under “Investors/News & Market Information”). The press release included the following financial information: Second Quarter 2026 Fina…

Director — Douglas Neal: Douglas Neal was appointed as an independent director of Dynex Capital, Inc.

The company approved a form of Indemnification Agreement for its directors and executive officers.

Entry into a Material Definitive Agreement. On April 28, 2026, Dynex Capital, Inc. (the “Company”), entered into amendment no. 9 (“Amendment No. 9”) to the distribution agreement, dated June 29, 2018, as amended on May 31, 2019, August 3, 2021, June 3, 2022, February 10, 2023, October 29, 2024, May 1, 2025, July 29, 2025, and January 27, 2026 (the “Agreement” and, as amended by Amendment No. 9, the “Amended Agreement”), by and among the Company, on the one hand, and BTIG, LLC, Citizens JMP Se…

Other Events On April 21, 2026, Dynex Capital, Inc. (the “Company”) announced that its Board of Directors (the “Board”) approved a new share repurchase program (the “Program”) authorizing the repurchase of up to $300 million of its common stock, $0.01 par value per share (the “Common Stock”), and up to $50 million of its preferred stock, $0.01 par value per share, including any series thereof currently or hereafter authorized (the “Preferred Stock”). Under the Program, repurchases may be made…

Results of Operations and Financial Condition. On April 20, 2026, Dynex Capital, Inc. (the "Company") issued a press release announcing its financial results as of and for the quarter ended March 31, 2026. The text of the aforementioned press release is included as Exhibit 99.1 to this Form 8-K and is also available on the Company's website (www.dynexcapital.com under “Investors/News & Market Information”). The press release included the following financial information: • Total economic retur…

Chief Financial Officer — Michael Sartori: Michael Sartori was promoted to Chief Financial Officer, and Robert S. Colligan is departing from the role.

Entry into a Material Definitive Agreement. On January 27, 2026, Dynex Capital, Inc. (the “ Company ”), entered into amendment no. 8 (“ Amendment No. 8 ”) to the distribution agreement, dated June 29, 2018, as amended on May 31, 2019, August 3, 2021, June 3, 2022, February 10, 2023, October 29, 2024, May 1, 2025, and July 29, 2025 (the “ Agreement ” and, as amended by Amendment No. 8, the “ Amended Agreement ”), by and among the Company, on the one hand, and BTIG, LLC, Citizens JMP Securities…

Results of Operations and Financial Condition. On January 26, 2026, Dynex Capital, Inc. (the "Company") issued a press release announcing its financial results as of and for the quarter and year ended December 31, 2025. The text of the aforementioned press release is included as Exhibit 99.1 to this Form 8-K and is also available on the Company's website (www.dynexcapital.com under “Investors/News & Market Information”). The press release included the following financial information: • Total…

Chief Operating Officer — Meakin Bennett: Dynex Capital, Inc. hired Meakin Bennett as the new Chief Operating Officer.

Director — Joy Palmer: Ms. Palmer will not stand for re-election as a member of the Board of Directors.

Other Events Taxation of Our Company As previously disclosed, on July 28, 2025, Dynex Capital, Inc. (the “Company”) filed an automatic shelf registration statement on Form S-3 (File No. 333-289004) (the “Universal Shelf Registration Statement”) with the U.S. Securities and Exchange Commission (the “SEC”). The information included under the heading “Taxation of Our Company” in Exhibit 99.1 hereto is incorporated by reference herein and supersedes and replaces the information contained in the f…

Results of Operations and Financial Condition. On October 20, 2025, Dynex Capital, Inc. (the "Company") issued a press release announcing its financial results as of and for the quarter ended September 30, 2025. The text of the aforementioned press release is included as Exhibit 99.1 to this Form 8-K and is also available on the Company's website (www.dynexcapital.com under “Investors/News & Market Information”). The press release included the following financial information for the quarter:…

Entry into a Material Definitive Agreement. On July 29, 2025, Dynex Capital, Inc. (the “ Company ”), entered into amendment no. 7 (“ Amendment No. 7 ”) to the distribution agreement, dated June 29, 2018, as amended on May 31, 2019, August 3, 2021, June 3, 2022, February 10, 2023, October 29, 2024, and May 1, 2025 (the “ Agreement ” and, as amended by Amendment No. 7, the “ Amended Agreement ”), by and among the Company, on the one hand, and BTIG, LLC, Citizens JMP Securities, LLC, Janney Mont…

Results of Operations and Financial Condition. On July 21, 2025, Dynex Capital, Inc. (the "Company") issued a press release, which is available on its website ( www.dynexcapital.com under “Investor Center/News & Market Information”), reporting its financial condition and financial results as of and for the quarter ended June 30, 2025. A copy of the press release is being filed as Exhibit 99.1 to this report and is incorporated by reference into this

Approval of a new stock and incentive plan.

Entry into a Material Definitive Agreement. On May 1, 2025, Dynex Capital, Inc. (the “ Company ”), entered into amendment no. 6 (“ Amendment No. 6 ”) to the distribution agreement, dated June 29, 2018, as amended on May 31, 2019, August 3, 2021, June 3, 2022, February 10, 2023, and October 29, 2024 (the “ Agreement ” and, as amended by Amendment No. 6, the “ Amended Agreement ”), by and among the Company, on the one hand, and BTIG, LLC, Citizens JMP Securities, LLC, Janney Montgomery Scott LL…

Results of Operations and Financial Condition. On April 21, 2025, Dynex Capital, Inc. (the "Company") issued a press release, which is available on its website ( www.dynexcapital.com under “Investor Center/News & Market Information”), reporting its financial condition and financial results as of and for the quarter ended March 31, 2025. A copy of the press release is being filed as Exhibit 99.1 to this report and is incorporated by reference into this

Results of Operations and Financial Condition. On January 27, 2025, Dynex Capital, Inc. (the "Company") issued a press release, which is available on its website ( www.dynexcapital.com under “Investor Center/News & Market Information”), reporting its financial condition and financial results as of and for the quarter and year ended December 31, 2024. A copy of the press release is being filed as Exhibit 99.1 to this report and is incorporated by reference into this

Changes in Registrant’s Certifying Accountant Dismissal of Independent Registered Public Accounting Firm On December 18, 2024, the Audit Committee (“ Audit Committee ”) of the Board of Directors (“ Board ”) of Dynex Capital, Inc. (the “ Company ”) dismissed BDO USA, P.C. (“ BDO ”) as the Company’s independent registered public accounting firm, effective upon completion by BDO of its audit of the Company’s consolidated financial statements for the fiscal year ending December 31, 2024 and the f…

Entry into a Material Definitive Agreement. On October 29, 2024, Dynex Capital, Inc. (the “ Company ”), entered into amendment no. 5 (“ Amendment No. 5 ”) to the distribution agreement, dated June 29, 2018, as amended on May 31, 2019, August 3, 2021, June 3, 2022 and February 10, 2023 (the “ Agreement ” and, as amended by Amendment No. 5, the “ Amended Agreement ”), by and among the Company, on the one hand, and BTIG, LLC, Citizens JMP Securities, LLC, Janney Montgomery Scott LLC, Keefe, Bruy…