EX-99.906CERT
CERTIFICATIONS PURSUANT TO SECTION 906 OF THE
SARBANES-OXLEY ACT OF 2002
David P. Butler and Gerard K. O’Reilly, Co-Principal Executive Officers, and Jan Miller, Principal Financial Officer, of Dimensional Investment Group Inc., a Maryland corporation (the “Registrant”), each certify that:
| 1. | The Registrant’s periodic report on Form N-CSR for the period ended April 30, 2026 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended, as applicable; and | |
| 2. | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant. |
| By: | /s/ David P. Butler | |
| David P. Butler | ||
| Co-Principal Executive Officer | ||
| Dimensional Investment Group Inc. | ||
| Date: | July 7, 2026 |
| By: | /s/ Gerard K. O’Reilly | |
| Gerard K. O’Reilly | ||
| Co-Principal Executive Officer | ||
| Dimensional Investment Group Inc. | ||
| Date: | July 7, 2026 |
| By: | /s/ Jan Miller | |
| Jan Miller | ||
| Principal Financial Officer | ||
| Dimensional Investment Group Inc. | ||
| Date: | July 7, 2026 |