Company: CGABL
Filing Date: 2025-09-17
Form Type: 424B5
Source: 0001193125-25-206326
Chunk: 1

Company: Carlyle Group Inc.
Filing Date: 2025-09-17
Form: 424B5
Chunk 1
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) rank senior in right of payment to all of their existing and future subordinated indebtedness, (c) be effectively subordinated in right of payment to all of their respective existing and future secured indebtedness, to the extent of the value of the assets securing that indebtedness and (d) be structurally subordinated in right of payment to all existing and future indebtedness, liabilities and other obligations of each subsidiary of the Issuer or the relevant Guarantor that is not a Guarantor. See “Description of the Notes—Ranking.” The notes will be issued in book-entry form in minimum denominations of $2,000 and in integral multiples of $1,000 in excess thereof. We do not intend to list the notes on any securities exchange. For a more detailed description of the notes, see “Description of the Notes.” Investing in the notes involves significant risks. See “ Risk Factors” beginning on page S-11herein and in the documents we have incorporated by reference for more information. None of the Securities and Exchange Commission (the “SEC”), any state securities commission nor any other regulatory body has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

|                                  |     | Per Note |        |   |     | Total |             |
|:---------------------------------|:----|:---------|-------:|:--|:----|:------|------------:|
| Price to public(1)               |     |          | 99.767 | % |     | $     | 798,136,000 |
| Underwriting discount            |     |          |  0.650 | % |     | $     |   5,200,000 |
| Proceeds, before expenses, to us |     |          | 99.117 | % |     | $     | 792,936,000 |

| (1) | Plus accrued interest, if any, from September 19, 2025 to the date of delivery. |

The underwriters expect to deliver the notes to purchasers through the book-entry delivery system of The Depository Trust Company (“DTC”) for the accounts of its participants, which may include Clearstream Banking S.A., or Euroclear Bank SA/NV, on or about September 19, 2025, against payment in immediately available funds. Joint Book-Running Managers

| Citigroup |     | Goldman Sachs & Co. LLC