SCHEDULE 13D/A 0001104659-21-108946 0001480561 XXXXXXXX LIVE 20 Common Stock, $0.001 par value per share 07/08/2025 false 0001841514 000000000 COMMONWEALTH CREDIT PARTNERS BDC I, INC.

360 S. Rosemary Avenue, Suite 1700 West Palm Beach FL 33401

Garon Meikle, Chief Financial (313) 324-5900 UAW Retiree Medical Benefits Trust 1155 Brewery Park Blvd., Suite 400 Detroit MI 48207 0001480561 N UAW Retiree Medical Benefits Trust a WC N XX 0.00 612960.52 0.00 612960.52 612960.52 N 99.0 EP 0001795057 N UAW Chrysler Retirees Medical Benefits Plan a WC N XX 0.00 119527.30 0.00 119527.30 119527.30 N 19.3 EP 0001795052 N UAW Ford Retirees Medical Benefits Plan a WC N XX 0.00 186340.00 0.00 186340.00 186340.00 N 30.1 EP 0001795050 N UAW GM Retirees Medical Benefits Plan a WC N XX 0.00 307093.22 0.00 307093.22 307093.22 N 49.6 EP 0001794997 N Hershel Harper a AF N X1 0.00 612960.52 0.00 612960.52 612960.52 N 99.0 IN Common Stock, $0.001 par value per share COMMONWEALTH CREDIT PARTNERS BDC I, INC. 360 S. Rosemary Avenue, Suite 1700 West Palm Beach FL 33401 This Item 4 is hereby amended to include the following: On July 8, 2025, pursuant to drawdown notices delivered in accordance with the Subscription Agreements: (i) UAW Chrysler Retirees Medical Benefits Plan purchased from the Issuer, and the Issuer issued to UAW Chrysler Retirees Medical Benefits Plan, 6,253.390 Shares; (ii) UAW Ford Retirees Medical Benefits Plan purchased from the Issuer, and the Issuer issued to UAW Ford Retirees Medical Benefits Plan, 9,748.880 Shares; and (iii) UAW GM Retirees Medical Benefits Plan purchased from the Issuer, and the Issuer issued to UAW GM Retirees Medical Benefits Plan, 16,066.410 Shares. The price per Share was $926.13. The aggregate number of Shares to which this Amendment No. 20 relates is 612,960.52. Such aggregate number of Shares represents 99.0% of the common stock of the Issuer. The percentage reported in this Amendment No. 20 is calculated based upon 619,156.81 Shares outstanding as of July 8, 2025 as indicated by the Issuer. The UAW Chrysler Retirees Medical Benefits Plan beneficially owns and has shared voting and dispositive power of 119,527.30 Shares. Such Shares represent 19.3% of the Shares outstanding. The UAW Ford Retirees Medical Benefits Plan beneficially owns and has shared voting and dispositive power of 186,340.00 Shares. Such Shares represent 30.1% of the Shares outstanding. The UAW GM Retirees Medical Benefits Plan beneficially owns and has shared voting and dispositive power of 307,093.22 Shares. Such Shares represent 49.6% of the Shares outstanding. UAW RMBT is the trust under which the Plans are established and, pursuant to Rule 13d-3, may be deemed to beneficially own the 612,960.52 Shares held by the Plans. Such Shares represent 99.0% of the Shares outstanding. UAW RMBT is an indirect beneficial owner of these Shares. Hershel Harper is the chief investment officer of UAW RMBT, the trust under which the Plans are established, and, pursuant to Rule 13d-3 may be deemed to beneficially own the 612,960.52 Shares held by the Plans. Such Shares represent 99.0% of the Shares outstanding. Hershel Harper is an indirect beneficial owner of these Shares. Except as disclosed in Item 4, no transactions in the Shares were effected during the past sixty days by the Reporting Persons. Not applicable. Not applicable. UAW Retiree Medical Benefits Trust /s/ Garon Meikle 07/10/2025 UAW Chrysler Retirees Medical Benefits Plan /s/ Garon Meikle 07/10/2025 UAW Ford Retirees Medical Benefits Plan /s/ Garon Meikle 07/10/2025 UAW GM Retirees Medical Benefits Plan /s/ Garon Meikle 07/10/2025 Hershel Harper /s/ Hershel Harper 07/10/2025