The Committee shall establish and maintain the Company Stock Fund and such other Investment Funds as are specified from time to time by the Company. In this regard, the Company may choose to offer as Investment Funds any investment vehicles, including without limitation: # securities issued by investment companies advised by affiliates of the Trustee, # guaranteed investment contracts recommended by the Trustee, and # collective investment trusts maintained by the Trustee.

The Trust Fund shall consist of the PACCAR Stock Fund and one or more Investment Options selected by the Company. For purposes of investment, the Trustee may divide any part of the Trust Fund into one or more sub-funds. The Trustee may physically segregate the assets of any sub-fund, invest the assets of such sub-fund separately, and account separately for the income, gains, expenses and losses of such sub-fund.

Deemed Investment Funds. Upon notice to the Committee, Employee shall be permitted to reallocate the Deferred Compensation Account balance among the available Deemed Investment Funds as determined by the Committee. The manner in which such elections shall be made and the frequency with which such elections may be changed and the manner in which such elections shall become effective shall be determined in accordance with the procedures to be adopted by the Committee or its delegate from time to time. Once Employee designates all or a portion of the Deferred Compensation Account to be allocated to one or more Deemed Investment Funds, the Prescribed Rate shall no longer be available with respect to such portion of the Deferred Compensation Account, and such portion of the Employee’s Deferred Compensation Account shall not accrue earnings other than in connection with the Deemed Investment Funds.

As of each Valuation Date, the Trustee shall compute the value of each Investment Fund from which shall be determined the net gain or loss of such Investment Fund since the immediately preceding Valuation Date. The net gain or loss shall include any unrealized and realized profits and losses, and any dividends, interest or other income and any expenses which are due or accrued, but shall not include distributions from such Investment Fund. In determining the value of each Investment Fund, the Trustee shall use the following values: securities listed on any nationally recognized securities exchange shall be valued at the closing price reported on any such exchange on the Valuation Date, or, if there were no sales on the Valuation Date, then at the last quoted bid price on the Valuation Date. Securities not listed on a recognized securities exchange shall be valued at the last quoted closing bid price on the Valuation Date. A unit of participation in a common trust fund maintained by the Trustee or a share in a mutual fund shall be valued at the unit value, or share price respectively, in effect at the close of business on the Valuation Date. Securities with respect to which there were no available sale prices or bid prices on the Valuation Date, and any other investments, shall be valued at prices deemed by the Trustee to represent the fair market value thereof on the Valuation Date.

If any Investment Fund is liquidated or otherwise ceases to exist without a successor, then that portion of each Account balance that previously has been deemed to have been invested in that Investment Fund shall be deemed to have been transferred to an Investment Fund consisting of money market instruments, or, if none, such other Investment Fund selected by the Committee.

Default Deemed Investment Funds. If any portion of a Deferred Compensation Account remains unallocated among the Deemed Investment Funds, such amount shall be allocated to the default Deemed Investment Fund.

Investment of Escrow Funds. So long as the Escrow Agent shall hold any funds in the Escrow Fund, the Escrow Agent shall invest such funds in such Authorized Investments as Seller may designate in writing to the Escrow Agent. For purposes of this Agreement, the term “Authorized Investments” shall mean # direct obligations of the United States of America, # any repurchase agreement or reverse repurchase agreement with any bank which is a member of the Federal Deposit Insurance Corporation (“FDIC”), and that has capital and surplus of not less than $100 million, or with any primary government bond dealer reporting to and trading with the Federal Reserve Bank of New York, provided that such agreement is secured by direct obligations of the United States of America, # shares of the Federated U.S. Government short-term fund, and # fully collateralized Certificates of Deposit of any bank which is a member of the FDIC and which has capital and surplus of not less than $100 million.

Reference Investment Funds Available. The Company and the Recordkeeper will maintain records in respect of the Accounts of each Participant which measure in accordance with the elections made by such Participant in respect of his or her Deferred Amounts the earnings, gains and losses attributable to such Deferred Amounts as though invested in one or more of the Reference Investment Funds within the categories described below, as specifically selected by the Compensation Committee and identified at Annex I to the Plan:

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Changes to Deemed Investment Funds. The Committee shall have the authority to establish and maintain the Deemed Investment Funds and the default Deemed Investment Fund. In the event the Committee changes, adds, or removes any Deemed Investment Fund or any default Deemed Investment Fund, the Committee shall notify Employee, if feasible, no later than thirty (30) days prior to such change, addition, or removal. In the event of any such change, addition, or removal, the Committee shall provide the Employee with information regarding alternative Deemed Investment Funds, the ability for the Employee to make a change to their allocations in the Deemed Investment Funds, or the default course of action that will be taken in the event the Employee does not provide instructions to the Committee.