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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 11-K

(Mark One)

OR

Commission file number 1-33447

A.            Full title of the plan and the address of the plan, if different from that of the issuer named below:

AECOM RETIREMENT & SAVINGS PLAN

B.            Name of issuer of the securities held pursuant to the plan and the address to its principal executive office:

AECOM

1999 Avenue of the Stars

Los Angeles, California 90067

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AECOM Retirement & Savings Plan

Financial Statements as of

December 31, 2015 and 2014

and for the Year Ended December 31, 2015,

Supplemental Schedule as of December 31, 2015 and

Reports of Independent Registered Public Accounting Firms

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AECOM RETIREMENT & SAVINGS PLAN

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Report of Independent Registered Public Accounting Firm

To the Americas Benefits Administration Committee

AECOM Retirement & Savings Plan

We have audited the accompanying statement of net assets available for benefits of the AECOM Retirement & Savings Plan (the Plan) as of December 31, 2015 and the related statement of changes in net assets available for benefits for the year then ended. These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on these financial statements based on our audit. The Plan’s financial statements as of and for the year ended December 31, 2014 were audited by other auditors whose report dated June 29, 2015, included an explanatory paragraph on the retrospective application of the recently adopted accounting pronouncement as discussed in Note B.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation.  We believe that our audit provides a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2015, and the changes in net assets available for benefits for the year then ended, in conformity with accounting principles generally accepted in the United States of America.

Our audit was conducted for the purpose of forming an opinion on the financial statements as of and for the year ended December 31, 2015 as a whole.  The supplemental information is presented for the purpose of additional analysis and is not a required part of the financial statements but is supplemental information required by the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. Such information is the responsibility of the Plan’s management and was derived from and relates directly to the underlying accounting and other records used to prepare the financial statements. The information has been subjected to the auditing procedures applied in the audit of the financial statements and certain additional procedures, including comparing and reconciling such information directly to the underlying accounting and other records used to prepare the financial statements or to the financial statements themselves, and other additional procedures in accordance with auditing standards generally accepted in the United States of America. In forming our opinion on the supplemental information in the accompanying schedule, we evaluated whether the supplemental information, including its form and content, is presented in conformity with the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. In our opinion, the supplemental information is fairly stated in all material respects in relation to the financial statements as a whole.

As discussed in Note B to the financial statements, as of and for the year ended December 31, 2015, the Plan implemented Accounting Standards Update No. 2015-12 (ASU 2015-12).  We also have audited the adjustments to the 2014 financial statements to retrospectively apply the implementation of ASU 2015-12, as described in Note B.  In our opinion, such adjustments are appropriate and have been properly applied. We were not engaged to audit, review, or apply any procedures to the 2014 financial statements of the Plan other than with respect to the adjustments and, accordingly, we do not express an opinion or any other form of assurance on the 2014 financial statements taken as a whole.

/s/ Vasquez & Company LLP

Los Angeles, CA

June 28, 2016

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Report of Independent Registered Public Accounting Firm

To the Americas Retirement Plan Investment Committee

AECOM Retirement & Savings Plan

We have audited the accompanying statement of net assets available for benefits of AECOM Retirement & Savings Plan (the Plan) as of December 31, 2014. This financial statement is the responsibility of the Plan’s management. Our responsibility is to express an opinion on this financial statement based on our audit.

Except as discussed in the following paragraph, we conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statement is free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statement. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion.

We were not engaged to audit the retrospective application of the recently adopted accounting pronouncements and related information reflected on the statement of net assets available for benefits as of December 31, 2014 and the related footnote disclosures, as discussed in Note B to the financial statement.

In our opinion, except for effects of such adjustments, if any, as might have been determined to be necessary had we been engaged to audit the Plan’s retroactive application of the recently adopted accounting pronouncements, the financial statement referred to above presents fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2014, in conformity with accounting principles generally accepted in the United States of America.

/s/ RSM US LLP

Los Angeles, California

June 29, 2015

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AECOM RETIREMENT & SAVINGS PLAN

STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS

DECEMBER 31, 2015 AND 2014

See notes to financial statements.

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AECOM RETIREMENT & SAVINGS PLAN

STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS

YEAR ENDED DECEMBER 31, 2015

See notes to financial statements.

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AECOM RETIREMENT & SAVINGS PLAN

NOTES TO FINANCIAL STATEMENTS

A.                           DESCRIPTION OF THE PLAN

The following brief description of AECOM Retirement & Savings Plan (the “Plan”) (formerly the AECOM Technology Corporation Retirement & Savings Plan) is provided for general information purposes only.  Participants should refer to the Plan document and the Summary Plan Description for more complete information.

General — The Plan is a defined contribution plan that was established to provide benefits to eligible employees of AECOM (“AECOM” or the “Company”) and various subsidiaries meeting certain employment requirements.  The Plan is administered by the Americas Benefits Administration Committee as authorized by AECOM.  The Plan is subject to the applicable provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”), as amended.

The Plan is intended to qualify as a defined contribution plan (and an eligible individual account plan, as defined in Section 407(d)(3) of ERISA) which is qualified and exempt from taxation under Section 401(a) and 501(a) of the Internal Revenue Service Code (the “Code”) and is intended to qualify as a profit sharing plan which may invest in shares of stock of the Company which meet the requirements for “qualifying employer securities” under Section 407(d)(5) of ERISA.  Assets of the Plan, except for assets in certain separately managed accounts, are held by Bank of America, N.A., the trustee and record keeper (the “Trustee”), and assets in the separately managed accounts are held by Northern Trust Corporation (the “Custodian”).

Each participant is entitled to exercise voting rights attributable to the Company shares allocated to his or her account and is notified by the Trustee prior to the time that such rights are to be exercised.  The Trustee, at its discretion, is permitted to vote for any share for which instructions have not been given by a participant.

Eligibility — Employees become eligible to participate in the Plan on the first day of the second calendar month of service.  If the employee decides not to participate when they are first eligible, they may begin participating anytime, provided they are an eligible employee of the Company on that date.  “Eligible employee” shall mean a person who is an employee of the Company, excluding (i) any leased employee described in Section 414(n) of the Code, (ii) any employee who is covered by a collective bargaining agreement between employee representatives and the Company unless such bargaining agreement specifically provides otherwise, (iii) any employee who is compensated on an hourly rate or other rate basis if such employee is not included in a designated eligible payroll classification code so designated by the Company, and (iv) any person who is a non-resident alien who receives no earned income (within the meaning of Code Section 911(b)) from sources within the United States.

Employee Contributions:

After-Tax Contributions — Participants may elect to make after-tax contributions in percentages from 0.5% to 50% of compensation.

Tax-Deferred Contributions — Participants may elect to make tax-deferred contributions in percentages from 0.5% to 50% of eligible compensation limited to a maximum annual amount specified by the Code ($18,000 in 2015).

Roth Contributions — Participants may elect to make Roth contributions in percentages from 0.5% to 50% of eligible compensation limited to a maximum annual amount specified by the Code ($18,000 in 2015).

The total of all participant contributions is limited to 50% of employee compensation.

Catch-Up Contributions — Participants who have attained age 50 before the end of the Plan year are eligible to make catch-up contributions (limited to $6,000 in 2015).

Participants may also contribute amounts representing rollovers from other qualified plans.

Participant Accounts — Each participant’s account is credited with the participant’s contributions and rollovers and Company contributions which are directly made to a participant’s account and allocations of Plan investment earnings or losses. Allocations are based on participant earnings or account balances, as defined by the Plan document. Certain administration fees are paid from the participant’s account. The benefit to which a participant is entitled is the benefit that may be provided from the participant’s vested account.

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AECOM RETIREMENT & SAVINGS PLAN

NOTES TO FINANCIAL STATEMENTS

A.                           DESCRIPTION OF THE PLAN (Concluded)

Employer Contributions — The participants’ pre-tax, Roth, and after-tax contributions made to the Plan are matched 50% by the Company up to 6% of eligible compensation.  The Company’s match is allocated 50% to the participant’s selected investment allocations and 50% to Company common stock, which is acquired on the open market.  Participants can transfer their investment in AECOM common stock to other investment options and make withdrawals, subject to certain Plan and legal restrictions, out of the Plan at any time.

Vesting — Participants’ contributions and rollovers, and the earnings thereon, are at all times vested in such participants’ accounts.  A participant is 100% vested in any Company matching contributions after three years of credited service (0% prior to three years) or upon attaining age 65, becoming disabled or deceased while employed at the Company.  Vesting of Company contributions and earnings thereon are based on years of continuous service.  The portion of a participant’s account balance that is not vested upon termination of employment is forfeited at the time the participant receives a distribution or as of the end of the Plan year in which the participant incurs five consecutive breaks in service, as defined in the Plan document, whichever occurs first.  These unvested forfeited Company contributions are accumulated in the forfeiture account and are available to reduce subsequent Company contributions or pay Plan expenses.  The balance in the forfeiture account was $3.6 million and $1.7 million at December 31, 2015 and 2014, respectively.  Forfeitures used to reduce the Company’s contributions or Plan expenses for the year ended December 31, 2015 were not significant.

Notes Receivable from Participants — Active participants may obtain loans from the Plan with the consent of the Plan Administrator.  The minimum loan amount permitted is $1,000; the maximum is the lesser of $50,000 or 50% of the participant’s vested account balance.  The interest rates are no less than 1% over the prime rate as provided by Merrill Lynch Investments.  Notes receivable from participants bear interest at rates that range from 4.25% to 9.50% at December 31, 2015 and 2014.  The repayment period of such loans cannot exceed five years, unless the proceeds are used to buy the participant’s principal residence, in which case longer terms, up to 20 years, are allowed.  These loans are secured by a promissory note from the participant and his or her vested interest in the Plan. The notes are recorded at cost plus accrued interest.

Accounting principles generally accepted in the United States of America require that the participant loans be classified as notes receivable from participants, which are segregated from plan investments.  Notes receivable from participants have been classified as an investment asset for the Form 5500 reporting purposes.

Distributions — Generally, distributions are made upon a participant’s election after a participant terminates employment, becomes disabled, dies, or turns age 59-1/2 (in the event of death, payment shall be made to his or her beneficiary or, if none, to his or her legal representatives).  Distributions are made in one single lump-sum in the form of cash or in-kind distribution.  Installments and annuity distribution options for members of certain acquired companies, provided in previously merged plans, were grandfathered in as a protected benefit.  Certified hardship withdrawals are permitted on vested amounts for certain substantiated financial reasons.  If the participant takes a hardship withdrawal, the participant will be suspended from making further contributions to the Plan for a six-month period.

B.                           SIGNIFICANT ACCOUNTING POLICIES

Basis of Accounting — The accompanying financial statements have been prepared on the accrual basis in accordance with accounting principles generally accepted in the United States of America.

Investment contracts held by a defined contribution plan are required to be reported at fair value, except for fully benefit-responsive investment contracts.  Contract value is the relevant measurement attribute for that portion of the net assets available for benefits of a defined contribution plan attributable to fully benefit-responsive investment contracts because contract value is the amount participants would receive if they were to initiate permitted transactions under the terms of the Plan.  The Plan invests in these investment contracts indirectly through a collective investment trust.

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NOTES TO FINANCIAL STATEMENTS

B.                           SIGNIFICANT ACCOUNTING POLICIES (Continued)

Due to a clarification in application of Topic 946 to employee benefit plan accounting, contract value of indirect investments in fully benefit-responsive contracts is understood to be the fair value.  Therefore, the adjustment from fair value to contract value from the previously presented December 31, 2014 Statement of Net Assets Available for Benefits has been reclassified and presented as part of Investments—at fair value.

Use of Estimates — The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the Plan’s management to make estimates and assumptions that affect certain reported amounts and disclosures.  Accordingly, actual results could differ from those estimates.

Investment Valuation and Income Recognition —Investments held by the Plan are reported at fair value.  Fair value of AECOM common stock and other shares of common stock is based on publicly quoted market prices.  Fair value of mutual funds is based on quoted market prices.  Investments in collective investment trusts are stated at net asset value of the applicable fund as determined by the administrator of the collective trust.  The cost of investments sold or distributed is determined on the basis of average cost for each participant.  Purchases and sales of securities are reflected on the trade date.  Transactions pending clearing with brokers not settled at year-end are recorded as other receivables or payables on the Statements of Net Assets Available for Benefits.  Dividends are recorded on the ex-dividend date.  Interest income is recorded as earned.  Net appreciation or depreciation in fair value of investments includes the Plan’s gains and losses on investments bought and sold as well as held during the year.

Payment of Benefits — Benefits are recorded when paid by the Plan.

Administrative Expenses — The Plan incurs monthly recordkeeping and administrative expenses.  Specific participant transaction expenses are deducted from participant accounts directly.  Plan expenses that cannot be directly charged to a specific participant transaction may be paid, in whole or in part, from revenue sharing payments that the Plan receives from certain participating funds.  For the year ended December 31, 2015, the Plan incurred $2.0 million of recordkeeping and administrative expenses.

Fair Value Measurements — The Plan’s investments, which are stated at fair value are disclosed in accordance with the established framework and disclosure requirements described in the FASB ASC No. 820-10, “Fair Value Measurements and Disclosures” (ASC 820-10), which defines fair value, establishes a framework for measuring fair value under current accounting pronouncements that require or permit fair value measurement and enhances disclosures about fair value measurements.  ASC 820-10 defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction value hierarchy which requires an entity to maximize the use of observable inputs when measuring fair value.

The standard describes three levels of inputs that may be used to measure fair value:

Level 1 — Inputs to the valuation methodology are quoted prices available in active markets for identical investments as of the reporting date;

Level 2 — Inputs to the valuation methodology include:

·            quoted 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;

·           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 inputs in situations where there is little or no market activity for the asset or liability and the reporting entity makes estimates and assumptions related to the pricing of the asset or liability including assumptions regarding risk.

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NOTES TO FINANCIAL STATEMENTS

B.                           SIGNIFICANT ACCOUNTING POLICIES (Continued)

A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

The following is a description of the valuation methodologies used for instruments measured at fair value, including the general classification of such instruments pursuant to the valuation hierarchy.

AECOM Common Stock

AECOM common stock is valued at the closing price reported on the New York Stock Exchange (“NYSE”) Composite Listing and is classified within Level 1 of the valuation hierarchy.

Mutual Funds

A mutual fund is an investment company registered under the Investment Company Act of 1940 that pools the capital of many investors and invests it in stocks, bonds, short-term money market instruments, and/or other securities.  These investments are public investment vehicles valued using the Net Asset Value (“NAV”) provided by the administrator of the fund.  The NAV is based on the value of the underlying assets owned by the fund, minus its liabilities, and then divided by the number of shares outstanding.  The NAV is a quoted price in an active market and classified within Level 1 of the valuation hierarchy.

Collective Investment Trusts

A collective investment trust is a trust for the collective investment and reinvestment of assets contributed from employee benefit plans maintained by more than one plan.  These investments are valued using the NAV provided by the administrator of the collective trust.  The NAV is based on the value of the underlying assets owned by the fund, minus its liabilities, and then divided by the number of shares outstanding.  The NAV is used as a practical expedient to estimate fair value.  The Plan also invests in a Stable Value Collective Investment Trust, which contains fully benefit-responsive investment contracts (“FBRIC”).  These FBRIC’s are valued at contract value. Because the Plan’s investment in FBRIC is an indirect investment through a collective investment trust, the contract value of the indirect investment is understood to be the fair value of the investment.  The collective investment trusts are classified within Level 2 of the valuation hierarchy because the NAV’s unit price is quoted on a private market that is not active.

Separately Managed Accounts

Separately managed accounts are not mutual funds registered under the Investment Company Act of 1940, but instead are individual managed investment accounts managed by an investment adviser.  The underlying investments include investments in publicly traded common stock and bonds, in both domestic and foreign markets, and in money market funds.  The fair values of the underlying assets of the separately managed accounts are priced by the investment advisor using the last quoted sale price listed or regularly traded on a securities exchange or in the over-the-counter market or, for certain markets, the official closing price at the time the valuations are made. Because the underlying assets are valued using quoted prices available in active markets, they are classified within Level 1.

The preceding methods described may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values.  Furthermore, although Plan management 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.

Transfers Between Levels — 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 of 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.  We evaluate the significance of transfers between levels based on the nature of the financial instruments’ size or the transfer relative to total net assets available for benefits.  For the years ended December 31, 2015 and 2014, there were no transfers between levels.

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NOTES TO FINANCIAL STATEMENTS

B.                           SIGNIFICANT ACCOUNTING POLICIES (Concluded)

Recent Accounting Pronouncements — In May 2015, the FASB issued Accounting Standards Update (“ASU”) No. 2015-07, Disclosures for Investment in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) (“ASU 2015-07”).  ASU 2015-07 seeks to eliminate diversity in practice surrounding how investments measured at net asset value under the practical expedient with future redemption dates have been categorized in the fair value hierarchy.  It is effective for annual reporting periods beginning after December 15, 2015.  The Plan’s management is currently in the process of evaluating the impact of the adoption of the new accounting guidance on its Plan financial statements.

In July 2015, the FASB issued ASU No. 2015-12, Plan Accounting:  Defined Benefit Pension Plans (Topic 960), Defined Contribution Pension Plan (Topic 962), Health and Welfare Benefit Plans (Topic 965) :  (Part I) Fully Benefit-Responsive Investment Contracts, (Part II) Plan Investment Disclosures, and (Part III) Measurement Date Practical Expedient (a consensus of the FASB Emerging Issues Task Force ) (“Update”).  The purpose of this Update is to simplify plan accounting.  The amendments in Part I of this update designate contract value as the only required measure for direct investments in fully benefit-responsive investment contracts.  Fully benefit-responsive investment contracts will be presented at the contract value; accordingly, there will no longer be an adjustment from fair value to contract value on the face of the financial statements.  The amendments in Part II of the Update will eliminate the requirements for plans to disclose (1) individual investments that represent 5 percent or more of net assets available for benefits and (2) the net appreciation or depreciation for investments by general type for both participant-directed investments and nonparticipant-directed investments.  The net appreciation or depreciation in investments for the period will still be required to be presented in aggregate.  The amendments in Part III of the Update reduce complexity in employee benefit plan accounting by providing a practical expedient that permits plans to measure investments and investment-related accounts as of a month-end date that is closest to the plan’s fiscal year-end, when the fiscal period does not coincide with month-end.  The Update may be adopted in whole or by part (I, II, and III), as applicable.  The amendments in this Update are effective for fiscal years beginning after December 15, 2015.  The Plan early adopted this Update, and it resulted in the reclassification of $1.4 million from the “Adjustment from fair value to contract value for interest in a collective investment trust relating to fully benefit-responsive investment contracts” to “Investments—at fair value” within the Statement of Net Assets Available for Benefits as of December 31, 2014, as discussed above in Basis of Accounting. Disclosures of individual investments that comprised 5 percent or more of net assets available for benefits, as well as the net appreciation or depreciation of fair value by investment type have been eliminated as a result of the early adoption of this Update.  There were no other significant impacts on the Statements of Net Assets Available for Benefits as of December 31, 2015 and 2014, and the Statement of Changes in Net Assets Available for Benefits for the year ended December 31, 2015 for early adopting this Update.

C.                           FAIR VALUE MEASUREMENTS

Below are the Plan’s investments carried at fair value on a recurring basis by the ASC 820-10 fair value hierarchy levels described in Note B.

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NOTES TO FINANCIAL STATEMENTS

C.                           FAIR VALUE MEASUREMENTS (Concluded)

Net Asset Value per Share — The following tables summarize Level 2 investments measured at fair value based on NAV per share as of December 31, 2015 and 2014, respectively.

(a)              Fund invests primarily in the Fidelity Managed Income Portfolio II, which seeks the preservation of capital and to provide a competitive level of income over time that is consistent with the preservation of capital.

(b)             Fund seeks to provide long-term capital appreciation through investments in stocks of small companies.

(c)              Fund seeks to provide current income and some capital appreciation through investment in five Vanguard index funds.

(d)             Funds invest in a diversified portfolio which seeks to invest in assets of an appropriate risk level for average investors at various stages in their working lives.

(e)              Fund seeks long-term total return in excess of inflation through investments primarily in assets related to real assets and real asset companies.

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NOTES TO FINANCIAL STATEMENTS

D.                           BENEFITS PAYABLE

Net assets available for benefits at December 31, 2015 and 2014 include $2.6 and $2.4 million, respectively, for participants who have withdrawn from the Plan and have requested distribution of benefits, but have not yet been paid.

E.                           RELATED PARTY TRANSACTIONS

Certain Plan investments are shares of common stock of AECOM.  In addition, AECOM charges the Plan for certain administrative labor costs.  The total cost of administrative labor charged to the Plan by AECOM during the year ended December 31, 2015 was $209,000.  AECOM is the Plan sponsor as defined by the Plan and, therefore, these transactions qualify as party-in-interest transactions.  The Plan holds self-directed brokerage accounts and investments managed by Bank of America, N.A. and their affiliates, and these transactions qualify as party-in-interest transactions.  The Plan also holds common stock in Northern Trust Corporation and investments managed by Northern Trust Corporation, and these transactions also qualify as party-in-interest transactions.

F.                            PLAN TERMINATION

Although it has not expressed any intent to do so, AECOM 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 the Plan’s termination, participants will become 100% vested in their accounts.

G.                          TAX STATUS

The Plan received its latest determination letter on February 2, 2016, in which the Internal Revenue Service (“IRS”) indicated that the form of the Plan complies with the applicable requirements of the Internal Revenue Code. The Plan was amended since receiving the determination letter.  The Plan administrator and the Plan’s tax counsel believe that the Plan is designed and is currently being operated in compliance with the applicable requirements of the Code and therefore believe that the Plan continues to be qualified and the related trust is tax-exempt.

Accounting principles generally accepted in the United States of America require plan management to evaluate tax positions taken by the Plan and recognize a tax liability (or asset) if the Plan has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS.  The Plan administrator has analyzed the tax positions taken by the Plan, and has concluded that as of December 31, 2015, there are no uncertain positions taken or expected to be taken that would require recognition of liability (or asset) or disclosure in the financial statements.

H.                          RISKS AND UNCERTAINTIES

The Plan invests in various investment securities.  Investment securities are exposed to various risks such as interest rate, market and credit risks.  Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the value of investment securities will occur in the near term, and that such change could materially affect participant’s account balances and the amounts reported in the financial statements.  The Plan’s exposure to a concentration of risk is limited by the diversification of investments across various participant-directed investment options.  Additionally, the investments within each participant-directed investment option are further diversified into varied financial instruments, with the exception of AECOM common stock, which is a single security.

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NOTES TO FINANCIAL STATEMENTS

I.                               RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500

The following is a reconciliation of net assets available for benefits per the financial statements at December 31, 2015 and 2014 to Form 5500:

The following is a reconciliation of the total net decrease per the financial statement for the year ended December 31, 2015 to Form 5500:

J.                             SUBSEQUENT EVENTS

Certain Plan provisions changed effective January 1, 2016.  The significant changes consisted of:

·                  Eligibility — All employees who meet the eligibility requirements of the Plan, including new hires, are eligible to participate in the Plan with no waiting period. Part-time and temporary employees are also eligible to participate.

·                  Increased employee contribution limits — The combined limit that participants may elect to make after-tax, tax-deferred, and Roth increased from 50% to 75%.   Contribution elections can only be made in whole percentages.

·                  Vesting — Participants will vest in Company matching contributions over a three-year period based on the “elapsed time” method rather than “hours of service.”  A participant continues to be 100% vested in the participant’s contributions, rollovers, and earnings thereon.

·                  Auto enrollment — Newly eligible employees will be automatically enrolled as a participant at a deferral rate of 1% as of the first day of the pay period that is as soon as administratively feasible unless they affirmatively elect a different deferral percentage or elect not to participate in the Plan.

·                  Distribution —Terminated participants may elect to receive distribution of their account balances in monthly, quarterly, semi-annual or annual installments in addition to lump sum distributions.

·                  Company match — Participants must be employed on the last day of the Plan year (or employment discontinued due to death, disability or retirement at or after age 65) for them to receive Company matching contributions.   Participants will also receive the Company matching contribution if they terminate employment during the year with at least 30 years of service or after attainment of age 55 with 10 or more years of service, or due to a reduction in force, project loss, project completion, or participation in an approved voluntary severance program as determined by the Company.

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EIN#: 61-1088522                                          PLAN#: 055

FORM 5500, SCHEDULE H, PART IV, LINE 4i

SCHEDULE OF ASSETS (HELD AT END OF YEAR)

DECEMBER 31, 2015

(Continued)

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AECOM RETIREMENT & SAVINGS PLAN

EIN#: 61-1088522                                          PLAN#: 055

FORM 5500, SCHEDULE H, PART IV, LINE 4i

SCHEDULE OF ASSETS (HELD AT END OF YEAR)

DECEMBER 31, 2015

(Continued)

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EIN#: 61-1088522                                          PLAN#: 055

FORM 5500, SCHEDULE H, PART IV, LINE 4i

SCHEDULE OF ASSETS (HELD AT END OF YEAR)

DECEMBER 31, 2015