This Amendment, dated and effective as of October 27, 2025 (the “Amendment”), is entered into by and between STATE STREET BANK AND TRUST COMPANY, a Massachusetts trust company (the “Custodian”), and DIMENSIONAL INVESTMENT GROUP INC., a Maryland corporation (the “Fund”).

WHEREAS, the Custodian and the Fund entered into a U.S. Mutual Funds Custodian Agreement dated October 3, 2012 and effective on or about April 1, 2013 (as amended, modified and supplemented, the “Agreement”), whereby the Custodian provides certain custodial services to the Fund and each of its Portfolios set forth on Appendix A thereto; and

WHEREAS, the Fund desires to have certain of its Portfolios offer one or more classes of exchange-traded shares that operate as an exchange-traded fund (each such class, an “ETF Class”); and

WHEREAS, the Fund desires to engage the Custodian to render services as custodian for each ETF Class under the terms of the Agreement; and

WHEREAS, the parties hereto wish to amend the Agreement as set forth below.

NOW THEREFORE, in consideration of the premises and of the mutual covenants and agreements herein set forth, the parties hereto agree as follows:

1.	In accordance with Section 20.6, the Additional Portfolios provision, of the Agreement, the undersigned Fund hereby requests that the Custodian act as Custodian for the new ETF Classes listed below, under the terms of the Agreement:

ETF Class Name

U.S. Large Company Portfolio - ETF Class Shares

For purposes of clarity, Appendix A to the Agreement is hereby deleted in its entirety and replaced with the new Appendix A attached hereto.

2.	The following section is hereby added to the Agreement as Section 21:

SECTION 21.1 Appendix A hereto reflects as an “ETF Class” the share class of each Portfolio identified therein that offers a class of exchange-traded shares that operates as an exchange-traded fund and that will issue and redeem shares only in aggregations of a specified number of shares, each called a “Creation Unit,” generally in exchange for a basket of securities and/or instruments and a specified cash payment, as more fully described in the Portfolio’s currently effective prospectus and statement of additional information (collectively, the “Prospectus”). Capitalized terms used in this Section without definition shall have the meanings given to them in the Prospectus. For the avoidance of doubt, this Section will only apply with respect to each ETF share class of the Portfolio(s) identified as ETF Classes on Appendix A.

SECTION 21.3 ALLOCATION OF DEPOSIT SECURITY SHORTFALLS. Each Portfolio on behalf of its ETF Class acknowledges that the Custodian maintains only one account on the books of the NSCC for the benefit of all exchange traded funds for which the Custodian serves as custodian, including the Portfolio (collectively, the “ETF Custody Clients”). In the event that (a) two or more ETF Custody Clients require delivery of the same Deposit Security in order to purchase a Creation Unit, and (b) the NSCC, pursuant to its Continuous Net Settlement system, delivers to the Custodian’s NSCC account less than the full amount of such Deposit Security necessary to satisfy in full each affected ETF Custody Client’s required amount (a “Common Deposit Security Shortfall”), then, until all Common Deposit Security Shortfalls for a given Deposit Security are satisfied in full, the Custodian will allocate to each affected ETF Custody Client, on a pro rata basis, securities and/or cash received in the Custodian’s NSCC account relating to such shortfall, first to satisfy any prior unsatisfied Common Deposit Security Shortfall, and then to satisfy the current Common Deposit Security Shortfall.

SECTION 21.4 CREATION AND REDEMPTION OF CREATION UNITS.

SECTION 21.4.1 CREATION. The Custodian shall receive and deposit into the Portfolio’s account such payments as are received for ETF Class shares issued or sold in Creation Units. The Custodian will provide timely notification to the Portfolio on behalf of its ETF Class and the Transfer Agent of any receipt of such payments by the Custodian.

SECTION 21.4.2 REDEMPTION. Upon receipt of instructions from the Portfolio’s Transfer Agent, the Custodian shall set aside funds and securities of the Portfolio on behalf of its ETF Class to the extent available for payment to, or in accordance with the instructions of, Authorized Participants who have delivered to the Transfer Agent a request for redemption of their shares, in Creation Units, which shall have been accepted by the Transfer Agent, the applicable Portfolio Securities (or such securities in lieu thereof as may be designated by the investment manager in accordance with the Prospectus) for such Portfolio on behalf of its ETF Class and the Cash Redemption Amount, if applicable, less any applicable Redemption Transaction Fee. The Custodian will transfer the applicable ETF Class Securities to or on the order of the Authorized Participant. Any cash redemption payment (less any applicable Redemption Transaction Fee) due to the Authorized Participant on redemption shall be effected through the DTC system or through wire transfer in the case of redemptions effected outside of the DTC system.

SECTION 21.5 COMMUNICATIONS AUTHORIZATION. The Custodian is hereby authorized to communicate with the Portfolio’s investment adviser, administrator, transfer agent and distributor as may be necessary in connection with the Fund’s business and to maintain compliance with

applicable laws, rules and regulations and with respect to cash balances, securities and securities transaction activity in connection with Creation Unit transactions, including with respect to notifications of anticipated creations or redemptions of Creation Units for any ETF Class.”

3.	The Fund hereby confirms, as of the date set forth above, its representations and warranties set forth in Section 20.7 of the Agreement.

4.	Except as amended hereby, the Agreement shall remain in full force and effect.

5.

This Amendment may be executed in several counterparts, each of which shall be deemed to be an original, and all such counterparts taken together shall constitute one and the same instrument. Counterparts may be executed in either original or electronically transmitted form (e.g., faxes or emailed portable document format (PDF) form), and the parties hereby adopt as original any signatures received via electronically transmitted form.

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DIMENSIONAL INVESTMENT GROUP INC.

By: /s/Ryan Buechner

Name: Ryan Buechner

Title: Vice President

STATE STREET BANK AND TRUST COMPANY

By: /s/Suzanne M. Hinckley

Name: Suzanne M. Hinckley

Title: Senior Vice President

APPENDIX A

TO

CUSTODIAN AGREEMENT (U.S. MUTUAL FUNDS)

Updated as of October 27, 2025

Dimensional Investment Group Inc.

*	U.S. Large Company Portfolio

*	Emerging Markets Portfolio II

*	U.S. Large Cap Value Portfolio III

*	DFA Two-Year Fixed Income Portfolio

*	DFA Two-Year Government Portfolio

*	DFA International Value Portfolio

*	DFA International Value Portfolio III

*	Global Equity Portfolio

*	Global Allocation 60/40 Portfolio

*	Global Allocation 25/75 Portfolio