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Line 4i  Schedule of Assets (Held At End of Year) as of December 31, 2015 SignaturesIndex to ExhibitsACCOUNTING FIRM December 31,20152014Investments at fair value"Notes receivable from participants Total assetsAccrued administrative expenses!Net assets available for benefitsDecember 31, 2015/Additions to net assets available for benefits:Employer contributionsParticipants' contributionsInterest and dividend income RolloversOther additionsTotal additions2Deductions from net assets available for benefits:Distributions to participants-Net depreciation in fair value of investmentsAsset transfers outAdministrative expensesTotal deductions1Net decrease in net assets available for benefits4Net assets available for benefits, beginning of year.Net assets available for benefits, end of year2Fair Value Measurements at December 31, 2021 Using=Quoted Prices in Active Markets for Identical Assets(Level 1),Significant Other Observable Inputs(Level 2)(Significant Unobservable Inputs(Level 3)Fair Value at December 31, 2015Assets:#Registered investment company funds$ $Pioneer Natural Resources Stock Fund 'Total recurring fair value measurements&VRSTIII measured at contract value (a)NOTES TO FINANCIAL STATEMENTS2Fair Value Measurements at December 31, 2021 UsingFair Value at December 31, 2014December 31, 2014KNet assets available for benefits per the accompanying financial statementsfAdjustment from contract value to fair value for certain fully benefit-responsive investment contracts/Net assets available for benefits per Form 5500[Net decrease in net assets available for benefits per the accompanying financial statements|Adjustment from fair value to contract value for certain fully benefit-responsive investment contracts, at December 31, 2015$Net decrease in assets per Form 5500EIN: 75-2516853(c)(b)#Description of investment including(e)Identity of issuer, borrower,,maturity date, rate of interest, collateral,Current(a)lessor, or similar partypar or maturity valueValue* Vanguard Fiduciary Trust Company'Vanguard PRIMECAP Fund  524,024 shares)Vanguard 500 Index Fund  217,332 shares!Pioneer Natural Resources Company4Pioneer Natural Resources Stock Fund  672,730 units)Vanguard Windsor II Fund  727,079 shares8Vanguard Retirement Saving Trust III - 24,124,321 shares4Vanguard Prime Money Market Fund  22,506,351 sharesGVanguard Total Bond Market Index Institutional Class - 1,984,675 shares@Vanguard Total International Stock Index Fund  1,374,533 shares5Vanguard Target Retirement 2020 Fund  723,486 shares7Vanguard Target Retirement 2025 Fund  1,129,372 shares5Vanguard Target Retirement 2045 Fund  988,945 shares5Vanguard Target Retirement 2030 Fund  625,367 shares7Vanguard Total Stock Market Index Fund  337,806 shares)Vanguard Wellington Fund  461,813 shares5Vanguard Target Retirement 2035 Fund  934,681 shares5Vanguard Target Retirement 2040 Fund  521,611 sharesLoans to participants=Interest rates range from 4.25% to 6% with various maturities5Vanguard Target Retirement 2050 Fund  512,079 sharesAmerican Funds8American Funds Euro Pacific Growth Fund  217,356 shares JP MorganAJP Morgan Disciplined Equity Institutional Class - 433,153 shares5Vanguard Target Retirement 2015 Fund  627,036 sharesEagle Asset Management)Eagle Small Cap Growth I  148,659 shares5Vanguard Target Retirement 2055 Fund  242,880 sharesCVanguard Extended Market Index Institutional Class - 110,978 shares9Vanguard Intermediate-Term Treasury Fund  624,344 sharesT. Rowe Price1T. Rowe Price Mid-Cap Growth Fund  95,228 sharesLVanguard Inflation-Protected Securities Institutional Class - 432,221 sharesPIMCO(PIMCO Total Return Fund - 337,191 shares0Vanguard REIT Index Fund Admiral - 29,335 shares/JP Morgan Small Cap Equity Fund  74,476 sharesLoomis Sayles(Loomis Sayles Bond Fund  246,565 sharesOppenheimer Funds Inc.4Oppenheimer International Small Co I - 84,016 shares9Vanguard Mid-Cap Value Index Fund Admiral - 66,174 sharesFranklin Templeton Investments+Templeton Global Bond Fund  252,113 shares3Oppenheimer Developing Markets Fund  79,708 shares7Vanguard Target Retirement Income Fund  141,599 shares4Vanguard Target Retirement 2060 Fund  39,954 shares;Vanguard Small-Cap Value Index Fund Admiral - 22,613 shares TRP New ERA Fund - 27,448 shares4Vanguard Target Retirement 2010 Fund  29,761 sharesџ y^ cc ЛЬ d-Cыт6?_€%,С*+‚ƒ„&ffffffц?'ffffffц?(ш?)ш?Ё"d,, Ж` Ж`р? 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