SCHEDULE 13D/A 0002084285 XXXXXXXX LIVE 6 Common Stock, no par value 11/12/2025 false 0000889609 210502100 CONSUMER PORTFOLIO SERVICES, INC.

3800 Howard Hughes Parkway Suite 1400 Las Vegas NV 89169

Matthew Kane (203) 552-0888 2187 Atlantic Street 9th Floor Stamford CT 06902 0002084285 Black Diamond Capital Management I, LLLP OO VI 0 5127165 0 5127165 5127165 N 23.2 IA PN 0001486844 Deckoff Stephen H OO X1 0 5127165 0 5127165 5127165 N 23.2 IN HC Common Stock, no par value CONSUMER PORTFOLIO SERVICES, INC. 3800 Howard Hughes Parkway Suite 1400 Las Vegas NV 89169 This Amendment No. 6 to Schedule 13D ("Amendment No. 6") amends and supplements the information set forth in the Schedule 13D filed by the Reporting Persons with the U.S. Securities and Exchange Commission (the "SEC") on December 9, 2021 (the "Original Schedule 13D"), as amended by Amendment No. 1, filed with the SEC on February 8, 2022 ("Amendment No. 1"), Amendment No. 2, filed with the SEC on February 15, 2022 ("Amendment No. 2"), Amendment No. 3, filed with the SEC on March 14, 2022 ("Amendment No. 3"), Amendment No. 4, filed with the SEC on June 28, 2022 ("Amendment No. 4"), and Amendment No. 5, filed with the SEC on August 26, 2025 ("Amendment No. 5" and, together with the Original Schedule 13D, Amendment No. 1, Amendment No. 2, Amendment No. 3, Amendment No. 4, and Amendment No. 5, the "Schedule 13D"), with respect to the Common Stock, no par value (the "Shares"), of Consumer Portfolio Services, Inc. (the "Issuer" or the "Company"), whose principal executive offices are located at 3800 Howard Hughes Parkway, Suite 1400, Las Vegas, Nevada 89169. Each of the Original Schedule 13D and Amendment Nos. 1 - 5 were filed under BDCM CT, L.L.C. (CIK 0001282197). Starting with this Amendment No. 6, the Schedule 13D will be filed under Black Diamond Capital Management I, LLLP (CIK 0002084285). All capitalized terms contained herein but not otherwise defined shall have the meanings ascribed to such terms in the Schedule 13D. Except as specifically provided herein, this Amendment No. 6 does not modify any of the information previously reported in the Schedule 13D. Item 2 of the Schedule 13D is hereby supplemented as follows: Since the filing of Amendment No. 5, Black Diamond Holdings, LLLP changed its name to Black Diamond Capital Management I, LLLP ("Black Diamond"). In addition, because, effective August 22, 2025, Black Diamond replaced BDCM CT, L.L.C. as the primary registered investment adviser that exercises investment discretion on behalf of investment advisory affiliates that serve as investment advisers to Black Diamond investment vehicles for whose accounts the Shares reported herein are held, BDCM CT, L.L.C. is no longer a Reporting Person on this Schedule 13D. Item 4 of the Schedule 13D is hereby amended and supplemented as follows: On November 12, 2025, the Reporting Persons issued a press release (the "Press Release") announcing their intent to vote against the Company's proposal to approve its 2025 Equity Incentive Plan (Proposal #4) at the Company's upcoming annual meeting of stockholders, scheduled to be held on November 19, 2025. A copy of the Press Release is attached hereto as Exhibit I. The foregoing description of the Press Release does not purport to be complete and is qualified in its entirety by reference to the Press Release, a copy of which is filed as an exhibit hereto and is incorporated by reference herein. Item 5 of the Schedule 13D is hereby amended and supplemented as follows: As of the date hereof, the Reporting Persons may be deemed to beneficially own 5,127,165 Shares, or approximately 23.2% of the Shares outstanding. This figure is based upon information in the Company's quarterly report on Form 10-Q, filed November 10, 2025, indicating that, as of October 23 2025, there were 22,071,046 Shares outstanding. Item 6 of the Schedule 13D is hereby amended and supplemented as follows: The response to Item 4 of this Amendment No. 6 is incorporated by reference herein. Item 7 of the Schedule 13D is hereby amended and supplemented as follows: Exhibit Description Exhibit H: Joint Filing Agreement, dated November 13, 2025 Exhibit I: Press Release, dated November 12, 2025 Black Diamond Capital Management I, LLLP /s/ Stephen H. Deckoff 11/13/2025 Deckoff Stephen H /s/ Stephen H. Deckoff 11/13/2025