RUSSELL INVESTMENT COMPANY AMENDMENT TO SECOND AMENDED AND RESTATED MASTER TRUST AGREEMENT Regarding Designation of Classes of Shares

XXXXXXX INVESTMENT COMPANY

AMENDMENT TO SECOND AMENDED AND RESTATED

MASTER TRUST AGREEMENT

Regarding Designation of Classes of Shares

AMENDMENT NO. 20 to the Second Amended and Restated Master Trust Agreement dated October 1, 2008 (referred to herein as the “Agreement”), done this          day of                     2013, by the Trustees under such Agreement.

WITNESSETH:

WHEREAS, Section 4.1 of the Agreement provides the Trustees shall have exclusive power without the requirement of shareholder approval to establish and designate such separate and distinct Sub-Trusts, and to fix and determine the relative rights and preferences as between the shares of the separate Sub-Trusts;

WHEREAS, Section 4.1 of the Agreement authorizes the Trustees to establish and designate Sub-Trusts and classes thereof;

WHEREAS, Section 4.2 of the Agreement provides that the Trustees may fix and determine certain relative rights and preferences of the shares of the Sub-Trusts in accordance with the provisions of such Section 4.2;

WHEREAS, the Trustees wish to establish and designate classes of shares of interest in certain Sub-Trusts, and fix and determine certain relative rights and obligations of the shares of said classes of such Sub-Trusts; and

WHEREAS, Section 4.1 of the Agreement provides that a Trustee may act for such purpose without shareholder approval.

NOW, THEREFORE, the Trustees hereby authorize the designation of classes of shares.

Section 4.2 Establishment and Designation of Classes.

Without limiting the authority of the Trustees set forth in Section 4.1 of the Agreement to establish and designate any further Sub-Trusts, and without affecting the rights and preferences of any existing Sub-Trust or class of any existing Sub-Trust, the Trustees hereby establish and designate ( (i) Class R4 and Class R5 Shares of the existing Conservative Strategy Fund, Moderate Strategy Fund, Balanced Strategy Fund, Growth Strategy Fund, Equity Growth Strategy Fund, 2015 Strategy Fund, 2020 Strategy Fund, 2025 Strategy Fund, 2030 Strategy Fund, 2035 Strategy Fund, 2040 Strategy Fund, 2045 Strategy Fund, 2050 Strategy Fund, 2055 Strategy Fund and In Retirement Fund.

In furtherance thereof, the Trustees direct that the new Shares of each of the Conservative Strategy Fund, Moderate Strategy Fund, Balanced Strategy Fund, Growth Strategy Fund, Equity Growth Strategy Fund, 2015 Strategy Fund, 2020 Strategy Fund, 2025 Strategy Fund, 2030 Strategy Fund, 2035 Strategy Fund, 2040 Strategy Fund, 2045 Strategy Fund, 2050 Strategy Fund, 2055

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Strategy Fund and In Retirement Fund shall have all the relative rights and preferences set forth in Section 4.2 of the Agreement, shall represent an equal proportionate interest in the underlying assets and liabilities of that Sub-Trust, and shall generally have identical voting, dividend, liquidation and other rights, preferences, powers, restrictions, limitations, obligations, qualifications and terms and conditions as all other Shares of such Sub-Trust, except as set forth in the Agreement.

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IN WITNESS WHEREOF, the undersigned have hereunto set their hands and seals for themselves and their assigns, as of the day and year first above written. This instrument may be executed in one or more counterparts, all of which shall together constitute a single instrument.

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