Company: CIMO
Filing Date: 2025-06-13
Form Type: 8-K/A
Source: 0001193125-25-140306
Chunk: 0

Company: CHIMERA INVESTMENT CORP
Filing Date: 2025-06-13
Form: 8-K/A
Chunk 0
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of report (Date of earliest event reported): June 11, 2025 CHIMERA INVESTMENT CORPORATION (Exact name of registrant as specified in its charter)

| Maryland                                       |     | 001-33796               |     | 26-0630461                             |
| (State or other jurisdiction of incorporation) |     | -Commission File Number |     | -I.R.S. Employer Identification Number |

| 630 Fifth Avenue, Suite 2400 New York, New York |     |     10111 |
| (Address of principal executive offices)        |     | -Zip code |

Registrant’s telephone number, including area code: (888) 895-6557 Not Applicable (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-Kfiling is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |

| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |

| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |

| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |

Securities registered pursuant to Section 12(b) of the Act:

| Title of each class                                                         |     | Trading Symbol(s) |     | Name of each exchange on which registered |
| Common Stock, par value $0.01 per share                                     |     | CIM               |     | New York Stock Exchange                   |
| 8.00% Series A Cumulative Redeemable Preferred Stock                        |     | CIM PRA           |     | New York Stock Exchange                   |
| 8.00% Series B Cumulative Fixed-to-Floating Rate Redeemable Preferred Stock |     | CIM PRB           |     | New York Stock Exchange                   |
|