RTPPF Rio Tinto Plc (PK)

Note 1.       Description of the Plan

The following description of the Kennecott Utah Copper Savings Plan for Represented Employees (the “Plan” or the “KUC Plan”) provides only general information. Participants should refer to the plan document, summary plan description and union agreement for a more complete description of the Plan’s provisions.

General: The Plan is a defined contribution plan covering all hourly employees who are represented by or included in a collective bargaining unit of Kennecott Utah Copper LLC and its affiliates (collectively, the “Company” or the “Employer”), as defined in the plan document. Kennecott Utah Copper LLC is an indirect wholly owned subsidiary of Rio Tinto plc. Eligible employees can participate in the Plan the first day of the calendar month after completing three months of continuous service. New hires will be enrolled automatically in the Plan at a before-tax contribution rate of four percent of eligible compensation. New hires have the option of electing out of the automatic enrollment at any time after they are eligible for the Plan. Any election to opt out of the automatic enrollment after the effective date will not affect any previously made contributions. The automatic enrollment provisions do not apply to eligible employees of Kennecott Barneys Canyon Mining Company.

The Rio Tinto America Inc. Benefits Governance Committee and the Investment Committee decided to transition the custodial and recordkeeping functions from State Street Bank & Trust Company (“State Street” or “Plan Trustee”) and Xerox HR Solutions, respectively, to Prudential Retirement Insurance and Annuity Company. This transition occurred on February 1, 2017. In order to facilitate this transition, a blackout period was established and enforced. For the period from 4:00 PM on January 31, 2017 through February 13, 2017 (the blackout period), participants were unable to direct or diversify investments in their individual accounts, or receive a distribution from the Plan. During the transition, the Rio Tinto America Inc. Savings Plan Trust (the “Master Trust”) was dissolved and the Plan reverted to stand alone trust and plan accounting.

The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”), as amended.

Contributions: Participants may elect, under a salary reduction agreement, to contribute to the Plan an amount not less than one percent and not more than 19 percent of their eligible compensation on a before-tax basis through payroll deductions. Before-tax contributions are limited by the Internal Revenue Code (“IRC”), which established a maximum contribution of $18,000 ($24,000 for participants age 50 or over) for the year ended December 31, 2017.

The Company matches participants’ contributions to the Plan at 50 percent, up to the first six percent of their eligible compensation.

Rollovers: An employee can make rollover contributions from another qualified plan or an individual retirement account (“IRA”) if certain criteria are met as set forth in the plan document.

The Plan does not permit Participants to invest rollover contributions into the common stock of the parent in the form of a unitized fund with American Depository Receipts (“ADRs”) (the “Company Stock Fund” or “Employer Stock Fund” or “Rio Tinto ADR Stock Fund”).

Participant accounts: Each participant’s account is credited with the participant’s contributions, the Company’s matching contributions, an allocation of the Plan earnings (losses), and administrative expenses. Allocations are based on participant earnings (losses), or account balances, as defined. The benefit to which a participant is entitled is the benefit which can be provided from the participant’s vested account. Terminated participants are charged a quarterly fee to offset recordkeeping expenses.

Kennecott Utah Copper Savings Plan for Represented Employees

Note 1.       Description of the Plan (Continued)

Participant-directed options for investments: Participants have the option to allocate plan contributions among various investment options, including the Rio Tinto ADR Stock Fund. All choices vary in types of investments, rates of return and investment risk. Participants may elect to have all or part of their account balances and future contributions invested in one fund, transferred to another fund, or in any combination (except as noted below). Participants also have the option to invest in managed funds that are weighted by asset class, based on the participant’s retirement date. The funds assume participants will retire upon reaching age 65 and invest in various collective trust and mutual funds.

The Plan limits the total amount of participant contributions and the Company matching contributions to the Rio Tinto ADR Stock Fund to a maximum of 20 percent of such contributions. The Plan does not permit participants to transfer funds into the Rio Tinto ADR Stock Fund, including rollover contributions; however, participants are permitted to transfer funds out of the Rio Tinto ADR Stock Fund or to re-allocate their portfolio among all other funds with the exception of the Rio Tinto ADR Stock Fund. See Note 9.

Vesting: Participants are immediately vested in their contributions plus actual earnings (losses) thereon. Vesting in the Company’s matching contribution is based on completed years of service. A participant is 100 percent vested after three completed years of credited service, or at time of death or attainment of age 65.

Payment of benefits: Upon termination, retirement, death or becoming permanently disabled, participants, or their beneficiaries may elect to receive lump-sum or rollover distributions in an amount equal to the value of the participants’ vested interests in their accounts. If a participant terminates employment and the participant’s account balance is less than $1,000, the Plan Administrator will authorize the benefit payment in a single lump sum without the participant’s consent. During employment, participants may withdraw account balances for financial hardship and other in-service withdrawals, as defined.

Transfers: Company employees not represented by a collective bargaining unit (non-represented employees) participate in the Rio Tinto America Inc. 401(k) Savings Plan and Investment Partnership Plan (the “RTAI Plan”). If employees change from represented to non-represented status during the year, their account balances are transferred from the KUC Plan to the RTAI Plan.

Forfeitures: Forfeitures are used to reduce future Company contributions or pay administrative expenses of the Plan. At December 31, 2017 and 2016, forfeited non-vested accounts were approximately $196,000 and $29,000, respectively. Approximately $8,000 in forfeitures were used to pay administrative expenses for the year ended December 31, 2017. No forfeitures were used to pay Company contributions for the year ended December 31, 2017.

If the distribution of a participant’s account is outstanding for five years or more, and reasonable efforts were made to locate the participant, such participant’s benefit may be forfeited. Any forfeitures from the Plan can be utilized to reinstate benefits should a participant or beneficiary make a claim for the forfeited benefit.

Note 2.       Summary of Significant Accounting Policies

Basis of presentation: The financial statements of the Plan reflect transactions on the accrual basis of accounting.

Kennecott Utah Copper Savings Plan for Represented Employees

Note 2.       Summary of Significant Accounting Policies (Continued)

Concentrations, risks and uncertainties: The Plan invests in various investment securities. Investment securities are exposed to various risks, such as interest rate, market, currency exchange rate, and credit risks. Due to the level of risk associated with certain investment securities, it is reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect participants’ account balances and the amounts reported in the statements of net assets available for benefits. The Plan’s investment in the Invesco Stable Value Fund and the SSgA S&P 500 Index Fund represented 19.2 percent and 10.2 percent of the Plan’s total investment balance, respectively, at December 31, 2017. The Plan’s investment in the Invesco Stable Value Fund and the SSgA S&P 500 Index Fund represented 21.3 percent and 10.2 percent of the Plan’s total interest in the Master Trust, respectively, at December 31, 2016. The Rio Tinto America Inc. Savings Plan Investment Committee (“Investment Committee”) monitors investment performance on a quarterly basis.

Investment valuation and income recognition: Investments are reported at fair value. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Plan’s Investment Committee determines the Plan’s valuation policies utilizing information provided by the investment advisors and/or Plan Trustee. See Note 4 for a discussion of fair value measurements.

Interest income is recorded on the accrual basis, and dividends are recorded on the ex-dividend date. Net appreciation (depreciation) includes gains and losses on investments bought and sold as well as held during the year. Realized gains and losses related to sales of investments are recorded on a trade-date basis. Expenses are recorded on the accrual basis.  

Prior to the dissolution of the Master Trust, the investment income (loss) was allocated to the Plan based upon its pro rata share in the net assets of the Master Trust. Expenses were allocated to the Plan based on actual costs incurred and its pro rata share in the net assets of the Master trust and were recorded on the accrual basis. 

Payment of benefits: Benefits are recorded when paid by the Plan.

Contributions: Employee contributions and related matching contributions are recorded when withheld from the participants’ compensation.

Administrative expenses: Certain investment advisor and other administrative fees were paid from the Plan for the year ended December 31, 2017. The Company provides accounting and other services for the Plan at no cost to the Plan. All other expenses related to administering the Plan were paid by the Company, and were excluded from these financial statements.

The Plan (and formerly the Master Trust), has several fund managers that manage the investments held by the Plan. Fees for certain investment fund management services are included as a reduction of the return earned on each fund. These fees, net of expected revenue sharing, range from 0.04 percent to 1.05 percent of investment fund balances. The fees related to transaction costs associated with the purchase or sale of Rio Tinto plc common stock ADRs are paid by the participants.

Certain fees have been withdrawn from participant accounts, and are held in an ERISA account within the Plan until they can be paid out to the service providers.

Subsequent events: The Plan Administrator has evaluated subsequent events through June 22, 2018 , which is the date the financial statements were available to be issued. See Note 9.

Kennecott Utah Copper Savings Plan for Represented Employees

Note 3.       Plan Interest in the Rio Tinto America Inc. Savings Plan Trust

Prior to February 1, 2017, the Plan’s investments were included in the investments of the Master Trust. Each participating retirement plan had a divided interest in the Master Trust (based on the investment direction by plan participants in the various investment options offered through the Master Trust). The value of the Plan’s interest in the Master Trust was based on the beginning of year value of the Plan’s interest in the Master Trust plus actual contributions and allocated investment income (loss) less actual distributions, and allocated administrative expenses. Investment income (loss), investment management fees and other direct expenses relating to the Master Trust were allocated to the individual plans based on the average daily balances. Accrued income, pending trades, and accrued expenses were de minimus at January 31, 2017 and December 31, 2016, and are included in the investment balances below. The Plan’s interest in the Master Trust was 9.2 percent and 9.1 percent at January 31, 2017 and December 31, 2016, respectively.  As of January 31, 2017, the Master Trust also included the investment assets of the following retirement plans:

·          RTAI Plan,

·          U.S. Borax Inc. 401(k) Savings & Retirement Contribution Plan for Represented Employees, and

·          Rio Tinto Alcan 401(k) Savings Plan for Former Employees.

The following is a summary of the Master Trust assets, the Plan’s divided interest in the assets of the Master Trust, and the Plan’s divided interest percentage ownership of the Master Trust assets at January 31, 2017 (prior to the transfer) and December 31, 2016:

Note 4.       Fair Value Measurements

Accounting guidance provides the framework for measuring fair value. The framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described as follows:

Level 1:       Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that the Plan has the ability to access.

Level 2:       Inputs to the valuation methodology include quoted market prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in inactive markets; inputs other than quoted prices that are observable for the asset or liability; and inputs that are derived principally from or corroborated by observable market data by correlation or other means. If the asset or liability has a specified (contractual) term, the Level 2 input must be observable for substantially the full term of the asset or liability.

Level 3:       Inputs to the valuation methodology are unobservable and significant to the fair value measurement.

The asset’s or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques used need to maximize the use of observable inputs and minimize the use of unobservable inputs.

Following is a description of the valuation methodologies used for assets measured at fair value. There have been no significant changes in the methodologies used at December 31, 2017 and 2016.

Kennecott Utah Copper Savings Plan for Represented Employees

Note 4.       Fair Value Measurements (Continued)

Mutual funds: Mutual funds are valued at the daily closing price as reported by the fund. Mutual funds are open-end mutual funds that are registered with the U.S. Securities and Exchange Commission. These funds are required to publish their daily net asset value (“NAV”) and to transact at that price. The mutual funds are deemed to be actively traded.

Stable value fund: collective investment trust: The stable value fund is valued at NAV per unit as a practical expedient, which is calculated based on the fair values of the underlying funds. This practical expedient would not be used if it is determined to be probable that the fund will sell the investment for an amount different from the reported NAV. The underlying funds include synthetic guaranteed investment contracts (“GICs”) and traditional GICs, for which contract value is used as the fair value, since contract value is the amount participants would receive if they were to initiate permitted transactions under the terms of the Plan. Participant transactions (purchases and sales) may occur daily. If the Plan initiates a full redemption of the fund, the issuer reserves the right to require 12 months’ notification in order to ensure that security liquidations will be carried out in an orderly manner.

Collective trust funds: The collective trust funds are valued at the NAV per unit as a practical expedient, which is based on the fair values of the underlying funds using a market approach. This practical expedient would not be used if it is determined to be probable that the fund will sell the investment for an amount different from the reported NAV. Underlying equity investments for which market quotations are readily available are reported at the last reported sale price on their principal exchange, market or system on valuation date, or official close price of certain markets. If no sales are reported for that day, investments are valued at the last published sales price, the mean between the last reported bid and asked prices, or at fair value as determined in good faith by the trustee of the fund. Underlying short-term investments are stated at amortized costs, which approximates fair value. Underlying registered investment companies or collective investment funds are valued at their respective NAV. Underlying fixed income investments are valued based on the basis of valuations furnished by independent pricing services. In the event current market prices or quotations are not readily available or deemed unreliable by the fund trustee, the fair value of the underlying fund will be determined in good faith by the fund trustee using alternative fair valuation methods. Participant transactions (purchases and sales) may occur daily, at NAV per unit. There are no restrictions on redemption.

Rio Tinto plc common stock ADRs: Rio Tinto plc common stock ADRs are valued at the closing price reported on the active market on which individual securities are traded.  At December 31, 2016, the fund included a cash component, which was valued at $1.00 per unit. 

Government short-term investment fund (“STIF”):  Consists of the State Street Global Advisors (“SSgA”) Government STIF which seeks to maximize current income, to the extent consistent with the preservation of capital and liquidity and the maintenance of a stable $1.00 per share NAV, by investing in U.S. dollar-denominated money market securities.

(a)        In accordance with ASC Subtopic 820-10, certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the statements of net assets available for benefits.

The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Plan believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

Kennecott Utah Copper Savings Plan for Represented Employees

Note 4.       Fair Value Measurements (Continued)

The availability of observable market data is monitored to assess the appropriate classification of financial instruments within the fair value hierarchy. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer is reported at the beginning of the reporting period. The Plan (and previously the Master Trust), evaluates the significance of transfers between levels based upon the nature of the financial instrument and size of the transfer relative to total net assets available for benefits. For the year ended December 31, 2017, there were no transfers between levels.

The Plan (and previously the Master Trust), follows guidance on how entities should estimate fair value of certain alternative investments. The fair value of investments within the scope of the guidance can be determined using NAV per share as a practical expedient, when fair value is not readily determinable; unless it is probable the investment will be sold at something other than NAV.

The following table includes categories of investments within the Plan and Master Trust, respectively, where NAV is available as a practical expedient:  

*The fund trustee, in its sole discretion, reserves the right to value any contributions or withdrawals as of the next succeeding valuation date or another date as the fund trustee deems appropriate.

**The redemption notice period relates to Company initiated events only.

There are no unfunded commitments related to the categories of investments where NAV is available as a practical expedient.

Note 5.       Related Party and Parties-in-Interest Transactions

The Master Trust was managed by State Street. Therefore, certain transactions within the Master Trust qualified as party-in-interest transactions. The Plan (and previously the Master Trust) also holds collective trust funds that are managed by SSgA, the investment management division of State Street. Fees paid by the Master Trust or Plan for investment management services to State Street or SSgA were included as a reduction of the return earned on each investment.

Kennecott Utah Copper Savings Plan for Represented Employees

Note 5.       Related Party and Parties-in-Interest Transactions (Continued)

The Plan (and previously the Master Trust) invests in Rio Tinto plc common stock ADRs. The Plan held 89,563 shares of Rio Tinto plc common stock ADRs at December 31, 2017, valued at $52.93. The Master Trust held 628,783 shares of Rio Tinto plc common stock ADRs at December 31, 2016, valued at $38.46. The cash component of this fund was approximately $68,000 at December 31, 2016. This fund did not have a cash balance as of December 31, 2017. During the one-month period ending January 31, 2017, purchases and sales of shares by the Master Trust totaled approximately $28,000 and $295,000, respectively. During the remaining eleven months of the year ended December 31, 2017, purchases and sales of shares by the Plan totaled approximately $298,000 and $864,000, respectively. During the year ended December 31, 2017, the Plan earned approximately $233,000 in dividends on this fund. These transactions qualify as party-in-interest transactions, which are exempt from prohibited transaction rules.

Note 6.       Plan Termination

Although it has not expressed any intent to do so, the Company has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. In the event of termination, all participants would become fully vested in their accounts.

Note 7.       Tax Status

The Internal Revenue Service has determined and informed the Company by a letter dated March 20, 2015, that the Plan and related trust were designed in accordance with the applicable requirements of the IRC. The Plan has been amended since receiving the determination letter; however, the Plan Administrator and the Plan’s legal counsel believe that the Plan is currently designed and being operated in compliance with the applicable requirements of the IRC and therefore believe the Plan and the related trust are tax-exempt.

The Plan Administrator has evaluated the Plan’s tax positions and concluded the Plan had maintained its tax-exempt status and had taken no uncertain tax positions which require adjustment to the financial statements. Therefore, no provision or liability for income taxes has been included in the financial statements. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax years in progress.

Note 8 .       Delinquent Participant Contributions

The Company erroneously failed to remit participant contributions to the Plan on a timely basis totaling approximately $639,000, $251,000, and $651,000 for the years ended December 31, 2013, 2015, and 2016, respectively. During the year ended December 31, 2016, the Company remitted lost earnings on the 2013, 2015, and 2016 delinquent contributions, and filed the correction under the Voluntary Fiduciary Correction Program (“VFCP”). A No Action letter was received from the Department of Labor (“DOL”) with respect to the VFCP application on July 28, 2017.

The Company subsequently determined that it erroneously failed to remit participant contributions totaling approximately $129,000 to the Plan on a timely basis for the year ended December 31, 2016, and erroneously failed to remit participant contributions totaling approximately $272,000 to the Plan on a timely basis for the year ended December 31, 2017. The Company remitted lost earnings on these late contributions and has begun the process of filing under the VFCP. See the accompanying supplemental Schedule of Delinquent Participant Contributions.

Kennecott Utah Copper Savings Plan for Represented Employees

Note 9.       Subsequent Events

Effective January 1, 2018, the Plan was amended to 1) change the plan name to Kennecott Utah Copper 401(k) Savings and Retirement Contribution Plan for Represented Employees; 2) to provide for a six percent non-elective employer contribution (“Retirement Contribution”, as defined), pursuant to the terms of the collective bargaining agreement entered into in March 2017, between the Company and respective unions; 3) add a three year vesting schedule for the Retirement Contributions; 4) to make minor changes to the Plan’s beneficiary designation and spousal consent provisions; and 5) add language with respect to the Company’s parental leave program.

The Plan was further amended, effective April 1, 2018, to close the Company Stock Fund to new contributions of any kind, including transfers into this fund, and any dividends, as of June 29, 2018.

The Company received a letter dated May 9, 2018 notifying the Company that the Rio Tinto America Inc. 401(k) Savings Plan and Investment Partnership Plan has been selected for DOL audit, and in connection with that audit, certain processes related to the Plan are being reviewed. No findings have been reported, and therefore, this has had no impact on the December 31, 2017 or 2016 balances. 

*Represents party-in-interest

See Report of Independent Registered Public Accounting Firm and Notes to Financial Statements.

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