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AECOM Technology Corporation Employee Stock Purchase Plan ServicesUnited States

Updated January 2011

This brochure provides a general description of Merrill Lynch’s ESPP services. Your ESPP participation is subject to the terms of your company’s plan, any agreement between you and your company covering the plan, and the prospectus provided to you by your company. Any transactions in connection with your plan in your Merrill Lynch brokerage account are subject to the terms and conditions of that account. This brochure does not constitute an offer or invitation to buy any securities. Any offer to buy securities from your company would be made only by a prospectus in accordance with the Securities Act of 1933 as amended. Refer to the accompanying materials for information provided by your company about your specific program.

Merrill Lynch Wealth Management makes available products and services offered by Merrill Lynch, Pierce, Fenner & Smith Incorporated (“MLPF&S”) and other subsidiaries of Bank of America Corporation (“BAC”). MLPF&S is a registered broker-dealer, Member SIPC and a wholly owned subsidiary of BAC.

Investment Products:

Are Not FDIC Insured Are Not Bank Guaranteed May Lose Value

An important benefit for you

Through the AECOM Technology Corporation Employee Stock Purchase Plan (ESPP), you can purchase shares of AECOM common stock at a discount.

This brochure summarizes some of the features of the ESPP, as well as services provided by Merrill Lynch. You should review the prospectus and plan documents carefully for more detailed information about the ESPP’s operation. In the event of a conflict with this brochure, the prospectus and plan documents will govern. AECOM has informed Merrill Lynch that the plan prospectus is available on myAECOM in the North America/Human Resources/Retirement Benefits section.

Merrill Lynch is the service provider for the ESPP. During any enrollment period, you can get started by visiting the Merrill Lynch website at www.benefits.ml.com.

Your Merrill Lynch brokerage accountOpening a Merrill Lynch brokerage account, called a Limited Individual Investor Account (LIIA), enables you to receive AECOM shares through the ESPP in such an account, and

What’s Inside Page How to participate in the ESPP ................................................................................................................1

ESPP timeline ..........................................................................................................................................2

Plan features ...........................................................................................................................................3

Merrill Lynch services .............................................................................................................................4

To enroll online .........................................................................................................................................6

Making changes to your elections ............................................................................................................9

Selling shares online ..............................................................................................................................10

Accessing plan documents ....................................................................................................................11

Service fees ...........................................................................................................................................12

to sell those shares, if you choose. You must have an LIIA in order for shares to be deposited into your account. For more information about opening your LIIA, see page 5. Please be aware that enrolling in the ESPP and opening your brokerage account are two separate transactions, but they can both be completed in a single online session.

If you are a control person, Section 16 Insider, or an individual subject to a pre-clearance policy (e.g., executive officer or director), you must contact AECOM’s Legal Department at 1 (213) 593-8038 before conducting any transactions. If you are subject to AECOM’s Insider Trading windows, you will have full inquiry access to Benefits OnLine®, but will need to contact Merrill Lynch by telephone as described on page 5 to enroll in the ESPP or open your LIIA. Further, AECOM has instructed Merrill Lynch not to accept enrollment requests during closed trading windows. Please consult AECOM’s Insider Trading Policy, and call AECOM’s Legal Department at 1 (213) 593-8038 or send an e-mail to [email protected] if you have any questions.

1AECOM ESPP

Participating in the ESPP involves four steps:

Step 1. AECOM makes an offer to eligible employees, through a prospectus, to purchase shares through the ESPP.

Step 2. Generally, there are six enrollment periods during the calendar year, each lasting approximately two months. When you enroll, you will make your contribution rate election. The date of your enrollment will determine the offering period to which your contributions will be credited. Once enrolled, you do not need to re-enroll during future enrollment periods. Your participation will continue automatically until you elect to change your contributions or cancel your participation within an offering period.

Step 3. Once enrolled, you contribute a percentage of your eligible compensation to the ESPP through after-tax payroll deductions during an offering period, which generally lasts approximately two months. Eligible compensation includes base salary or base wages, plus all overtime pay received from the company, but excludes any bonus compensation. Your total contributions during the offering period will be tracked on your paystub, not on the Merrill Lynch website.

Step 4. At the end of each offering period, AECOM uses your accumulated contributions to purchase shares of AECOM common stock at a discount from the fair market value on behalf of you as a participating employee. This occurs automatically. Fair market value is defined as the closing price on the New York Stock Exchange on the last trading day of the offering period.

Enrollment and Offering PeriodsThe enrollment period is a period of time during which you can enroll for the upcoming offering period.

The offering period occurs every two months, during which your ESPP contributions are made through payroll. Your total contribution amount will be tracked on your paystub. At the end of the offering period, your total contributions will be used to purchase AECOM common stock at a discount from the fair market value.

How to participate in the ESPP

2 AECOM ESPP

ESPP timeline

Enrollment Period Purchase DateOffering Period Shares deposited in your Merrill Lynch brokerage account> > >

To participate in the ESPP, please take note of the following timeline and your role in making an election:

Feature Description

Enrollment period Period for making your contribution election, or to reduce or increase your contribution rate

Offering period Period during which contributions are deducted from payroll

Making changes during the offering period Period for reducing or canceling your contributions

Purchase date Date on which shares will be purchased on your behalf; occurs on or around the last day of an offering period

Receiving your purchased AECOM shares Approximate date when shares will be deposited in your Merrill Lynch brokerage account; generally, during the first week after the end of the offering period

See page 6 for information about enrolling in the ESPP online.

3AECOM ESPP

Plan features

This page summarizes certain features of the AECOM ESPP as they relate to Merrill Lynch’s services. These features are more fully described in the plan prospectus and other plan documents.

EligibilityYou are eligible to participate in the ESPP if you work at least 20 hours a week and are 18 years of age or older. Contract, temporary, part-time variable employees and intern staff are not eligible to participate in the plan.

ContributionsContributions can be made only during an offering period. You may contribute a percentage of your eligible compensation to the ESPP, up to plan and IRS limits. Your eligible compensation includes base salary or base wages, plus all overtime pay received from the company. Bonus compensation is not considered eligible compensation. No interest is earned on contributions. Your contributions are subject to the annual IRS contribution limit of $25,000.

Contribution rate changesYour contributions will continue during each subsequent offering period unless you make an alternative election through Merrill Lynch, as described on page 9. During an offering period, you can reduce or discontinue your contribution, but you cannot increase it. Increasing your contribution rate can only be done for the next offering period.

Stock purchaseBased on the stock price on the last trading day of an offering period, AECOM will purchase shares of AECOM common stock on your behalf with your contributions, within two limits: the plan limit of 1,300 shares per offering period, and the IRS limit of $25,000 worth of stock per year. The annual $25,000 limit is determined based on the fair market value of the stock on the first day of the offering period.

Your shares will then be deposited in your Limited Individual Investor Account as soon as administratively possible. (For more information about the Limited Individual Investor Account, see page 5.) This will include whole shares and any partial share that is purchased with your contributions.

If your contributions exceed $25,000 worth of stock or could purchase more than 1,300 shares per offering period, then only the amount of stock that does not exceed these limits will be purchased on your behalf, and any residual cash will be returned to you through payroll as soon as administratively possible.

AECOM makes available a certain number of shares for purchase through the ESPP. If the total number of shares of common stock to be purchased through the plan exceeds the number of shares available for purchase, the available shares will be allocated on a pro-rata basis and any residual cash will be returned to you through payroll as soon as administratively possible.

Canceling your contributions prior to stock purchaseCanceling contributions to the ESPP is allowed prior to the end of the offering period. In this case, deductions will end as soon as administratively possible. For contributions already made, you can elect to have these returned to you through payroll or used to purchase shares at the end of the current offering period. No interest is earned on contributions. If you cancel contributions, you cannot re-enroll for the same offering period. If you wish to resume contributions, you will have to re-enroll for a future offering period.

Tax liabilityBecause the ESPP is a tax-qualified plan under Section 423 of the Internal Revenue Code, you are responsible for any taxes due on the sale of your AECOM shares when you sell them. You are advised to consult a tax advisor prior to selling shares. In general, depending on when you sell your shares, the tax implications vary. Please refer to the Frequently Asked Questions document provided by AECOM for more information about tax liability.

4 AECOM ESPP

Three options for your purchased shares

Once shares have been purchased and deposited in your Limited Individual Investor Account (LIIA), you may:

− Retain some or all of the shares in your LIIA, − Sell some or all of the shares, or − Transfer them to another account of your choice.

Selling sharesYou can sell your shares at any time and receive the proceeds in the form of a check or wire transfer. However, if you previously have been notified that you are an individual subject to pre-clearance procedures under the AECOM Insider Trading Policy, you must contact AECOM’s Legal Department as you normally would before selling your shares. Contact AECOM’s Legal Department at 1 (213) 593-8038, or send an e-mail to [email protected], if you have any questions.

Prior to placing a sale order, you must decide if you wish to place a Market Order or a Limit Order. Merrill Lynch will execute all sale orders subject to market conditions.

A Market Order lets you sell shares of stock at the first available sale price as soon as market conditions allow.

A Limit Order lets you set the price at which you want to sell the shares of stock and the sale will not occur until that price is available. If the stock price reaches or exceeds the price you set while the order is in effect, your sale is completed subject to market conditions. If the price is not met, your order will be cancelled.

− A Day Limit Order remains in effect for the current trading day only.

− A Good ’til Cancelled Limit Order remains in effect for 30 calendar days following the date of entry. If your order is entered after market hours, but prior to 9 p.m. (PT), the 30-day count begins two business days after the order is entered.

For more information about selling your shares online, see page 10.

Enrolling and managing your ESPP account online and on the telephoneYou can enroll, view account balances and modify your election online or on the telephone:

− Online – Log on to the Merrill Lynch website at www.benefits.ml.com.

− Telephone – From the U.S., Puerto Rico and Canada, dial (877) MER-4ACM [637-4226]. From other countries, use the AT&T country code plus 1 (877) MER-4ACM [637-4226], or dial direct: 1 (609) 818-8894. Select “1” for the ESPP when prompted, and you will be transferred to a representative.

The website and telephone support are available 24 hours a day, seven days a week.* See pages 6 through 11 for information about enrolling and managing your account online.

* Subject to occasional downtime for system maintenance.

Merrill Lynch services

5AECOM ESPP

Your Merrill Lynch brokerage accountBefore you can receive AECOM shares through the ESPP in a Merrill Lynch brokerage account, you will need to establish a Limited Individual Investor Account (LIIA). The LIIA is a self-directed, non-interest bearing brokerage account primarily used to receive shares acquired through the ESPP, and to hold and sell AECOM stock. It is separate from any other Merrill Lynch brokerage account you may have. You must open your LIIA – AECOM cannot do this for you – in order for shares to be deposited into your account.

Please note: If you have an LIIA for a different AECOM plan (such as AECOM’s Stock Option Awards) with Merrill Lynch, you must open a separate LIIA for the ESPP. You cannot use the same account for both plans. Once you open your LIIA, it will be listed under the Employee Stock Purchase Plan on the Benefits OnLine home page to distinguish the account from any other LIIA or additional brokerage account you may have.

It’s easy to open your LIIA on Benefits OnLine at www.benefits.ml.comYou can open your LIIA in five easy steps. Just complete the information in each step, and then submit your account information. Keep in mind that it can take up to 72 hours for your account to be opened once your application has been received. See page 8 for more information about opening your LIIA online.

Participants will be prompted to complete a Form W-9 or Form W-8BEN, as applicable, as part of the LIIA opening process. Failure to do so may result in mandatory additional U.S. backup withholding tax on your transactions. If you have previously submitted a W-9 or W-8BEN for a different account with Merrill Lynch, you still must submit a new form for your ESPP LIIA.

Once you open your account, you can hold and sell your AECOM shares. Any shares held in your account can be transferred to the broker of your choice at no cost to you through a broker-to-broker transfer at any time. Or, you may maintain these shares in your LIIA.

Already have a different Merrill Lynch brokerage account? You’ll still need to establish an LIIA for your ESPP shares. You can, however, link all of your other Merrill Lynch accounts with your LIIA so that you can manage them all together online. Call (800) 637-7455, virtually 24 hours a day, seven days a week, and please have your account numbers available.

Employees subject to pre-clearanceIf you are a control person, Section 16 Insider, or an individual subject to a pre-clearance policy (e.g., executive officer or director), you must contact AECOM’s Legal Department at 1 (213) 593-8038 before conducting any transactions. If you are subject to AECOM’s Insider Trading windows, you will have full inquiry access to Benefits OnLine, but will need to contact Merrill Lynch by telephone as described below to enroll in the ESPP or open your LIIA. Further, AECOM has instructed Merrill Lynch not to accept enrollment requests during closed trading windows. Please consult AECOM’s Insider Trading Policy, and call AECOM’s Legal Department at 1 (213) 593-8038 or send an e-mail to [email protected] if you have any questions.

Merrill Lynch’s Global Corporate and Institutional Advisory Services (GCIAS) group is designated to serve the specific needs of individuals subject to pre-clearance procedures under the AECOM Insider Trading Policy. While these individuals will have full inquiry access to Benefits OnLine, they must contact GCIAS to open a Merrill Lynch brokerage account (LIIA) and conduct transactions. In addition, your GCIAS Corporate Wealth Advisor is available to assist in Rule 144 filing obligation and provide 10b5-1 services. GCIAS professionals will work with you and AECOM’s Executive Compensation and Legal Departments to provide the assistance you need.

GCIAS can be reached Monday through Friday, from 5 a.m. to 3 p.m. U.S. Pacific Time, on days the New York Stock Exchange is open. From the U.S., Puerto Rico and Canada, dial (877) MER-4ACM [637-4226]. From other countries, use the AT&T country code plus (877) MER-4ACM [637-4226], or dial direct: (609) 818-8894. If you prefer, you can send an e-mail to [email protected].

6 AECOM ESPP

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AECOM EMPLOYEE STOCK PURCHASE PLAN (ESPP)

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To enroll onlineYou can enroll in the ESPP and manage your account easily through the Merrill Lynch website. The first time you visit the site, you will need a personal identification number (PIN), which you will receive from Merrill Lynch by mail under separate cover. Then follow the steps below to get started.

Note: If you have already created a User ID and Password for a different AECOM plan with Merrill Lynch, you may use those to log in to the site for the ESPP.

Once enrolled, you do not need to re-enroll during future enrollment periods. Your participation will continue automatically until you cancel it.

Step 1: Log in

Visit www.benefits.ml.com and enter your User ID and Password.

If this is your first time visiting the site, you can create your User ID and Password by following the prompts from the “Create User ID” link. To create a User ID and Password, you will need your PIN and your Social Security number. If you need assistance logging in, view the “Need help logging in?” demo.

Step 2: Select “Enroll Now”

Once you are logged in, you will come to the Home Page. Select “Enroll Now” next to “AECOM Employee Stock Purchase Plan” in the middle of the screen to begin the enrollment process.

The screen shots shown in this communication are intended to illustrate the functionality and services available to participants through the Merrill Lynch website. They are not meant as exact representations of the screens available through your plan.

To enroll online

Select your preferred language

The Benefits OnLine website can be viewed in different languages. If you would like to use the site in a language other than English, follow these instructions:

1. Go to www.benefits.ml.com.

2. Select the “Benefits OnLine International” link at the top of the screen.

3. Enter the AECOM trading symbol: ACM.

4. From the dropdown menu, select your language preference and click the “Go” button.

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To access the interactive Voice Response System, you will need to use your Social Security/Account Number and your six to twelve character Password.If you need to bookmark this page, please make sure to save the generic address, http://benefits.ml.com. Numbers appearing in the address should not be saved.Merrill Lynch, Pierce, Fenner & Smith Incorporated is a registered broker-dealer and a wholly-owned subsidiary of Bank of America Corporation.

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7AECOM ESPP

Enroll in Your Employee Stock Purchase Plan

Set Contribution Amount (You may contribute 1 to 10% of your compensation each period)

Enrollment

If you participate in the Employee Stock Purchase Plan, your payroll contributions are accumulated and held in a non-interest bearing account. On the purchase date (the last day of each two-month offering period), the money in your account will be used to purchase Company common stock on your behalf at a discounted rate of 12%.

Percent 10%

E-Consent AgreementBy enrolling in the employee stock purchase plan (ESPP), I also authorize and permit Merrill Lynch, Pierce, Fenner & Smith Incorporated (Merrill Lynch) to share with and transmit to the plan sponsor and its plan service provider information obtained from a brokerage account relationship at Merrill Lynch that is applicable to my participation in the ESPP, such as stock sale and transfer information.

Print Agreement

BackContinue

Step 3: Select “Get Started Now”

You will come to the screen shown here. Click “Get Started Now” to continue.

Step 4: Make your contribution election

On the next screen, you will make your contribution election. Under “Set Contribution Amount,” enter the percentage of your eligible compensation that you wish to contribute to the ESPP. Your election must be a whole percentage. Once you have made your election, click “Continue.”

Step 5: Review your election

You will receive a confirmation of your election, shown here, under “Contribution Election Saved!” If you want to change your election, select “Edit Contribution Elections” at the bottom of the screen. Otherwise, select “Open A Brokerage Account” to continue.

Enroll in Your Employee Stock Purchase Plan

1. Select your Contribution Election

2. Confirm your Contribution Election

3. Open your Brokerage Account

5 minutes is all it takes

Enrollment

p y g

Get Started Now

Enrollment

Contribution Election Saved!

Your election details are listed below. Please print out a copy of this confirmation. You can change the contributionamount by clicking on the Edit Contribution Amount button.

For each pay period: 10%

ESPP Contribution

Open A Brokerage AccountOpeOpeEdit Contribution Elections

8 AECOM ESPP

Enrollment

Open Your Brokerage Account

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Primary Account Owner

Mailing Address Residential or Alternate Address(If the account mailing address is different from theIndividual’s residence, please enter the ResidentialAddress.)

Single CLIENT

Salutation

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SuffixFirst Name Middle Name/Initial Last Name

Address Line 1

Address Line 2 (optional)

Address Line 1 (No P.O. Boxes Allowed)

Address Line 2 (optional)

City

Own or Rent Residence?

Zip CodeState

Email Address (Official Communication address for this account)

City Zip CodeState

Evening Phone NumberExt:

Daytime Phone Number

Years at Current Residence

Ext:

You may obtain information about the Securities Investor Protection Corporation (SIPC), including the SIPC Brochure, via the SIPC’s website at http://www.sipc.org or by calling SIPC at (202) 371-8300.

Rent

Personal InformationSTEP 2 OF 5

Help

John

123 Main Street

Anytown NJ 08534

M Sample

Step 6: Open your Merrill Lynch brokerage account

Before you can receive AECOM shares through the ESPP in a Merrill Lynch brokerage account, you will need to establish a Limited Individual Investor Account (LIIA). The LIIA is a self-directed, non-interest bearing brokerage account primarily used to receive shares acquired through the ESPP and to hold and sell AECOM stock. It is separate from any other Merrill Lynch brokerage account you may have.

Participants will be prompted to complete a Form W-9 or Form W-8BEN, as applicable, as part of the LIIA opening process. Failure to do so may result in mandatory additional U.S. backup withholding tax on your transactions. If you have previously submitted a W-9 or W-8BEN for a different account with Merrill Lynch, you still must submit a new form for your ESPP LIIA.

Please note: If you have an LIIA for a different AECOM plan with Merrill Lynch, you must open a separate LIIA for the ESPP. You cannot use the same account for both plans.

To open your brokerage account − Once you confirm your contribution election, you will be taken directly to the screen shown here. The site will guide you through the brokerage account opening process.

− Or, if you have already enrolled in the Plan but have not yet opened an LIIA, you will be prompted on the Home Page to open your account. Click “Continue” in the pop-up window (not displayed here) to proceed to the account opening page.

9AECOM ESPP


Offering Summary Purchase History Holdings Brokerage Plan Information Beneficiary

Offering Summary

New Enrollments Your Information

January 2011

Name ElectionOffering End Date

02/28/2011

There are no new enrollments available at this time.Name: John Sample

Address: 123 Main StreetAnytown, NJ33556USA

Brokerage Account: 123FG236

Email: [email protected]

Note: If any of the above information is incorrect,please contact your Human ResourceDepartment.

In Progress10% Actions

— Select Quick Links — (Edit) Plan Selector: AECOM EMPLOYEE STOCK PURCHASE PLAN

Print

> Offering Summary

Status

Amend

Suspend

Cancel



Offering History

To change or cancel your contributions During an offering period, you can reduce or cancel your ESPP elections. Increasing your contributions is only permitted during the enrollment period. No increases are permitted during the offering period in which you are making contributions.

To start this process, select the “ESPP” tab, followed by “Offering Summary.” In the middle of the screen, next to the appropriate offering period, click “Actions,” followed by either “Amend” (to change contributions) or “Cancel” (to cancel contributions).

To change your contribution rate If you select “Amend” on the “Offering Summary” page, a pop-up window will appear, prompting you to enter a new contribution amount. Enter the rate you want, and then click “Confirm.”

During an offering period, you can reduce or cancel your ESPP elections. Increasing your contributions is only permitted during an enrollment period. No increases are permitted during the offering period in which you are making contributions; you will receive an error message on screen if you attempt to do so.

To cancel your contributions If you select “Cancel” on the “Offering Summary” page, a pop-up window will appear, prompting you to make one of two choices.

− If you select “Refund my contributions,” your contributions will end as soon as administratively possible, and any contributions made to date will be returned to you through payroll.

− If you select “Use my contributions to purchase stock on the next purchase date,” your contributions will end as soon as administratively possible, and any contributions made to date will be used to purchase shares at the end of the offering period.

Once you have made your election, click “Confirm.”

Making changes to your elections



Offering Summary

New Enrollments

Offering History

Your Information

January 2011


05/06/2011







— Select Quick Links — (Edit) Plan Selector:

Print

ESPP > Offering Summary

Status

AECOM EMPLOYEE STOCK PURCHASE PLAN



Amend your ESPP Contribution Close X

No Thanksanks Confirm

Note: This is to confirm you are changing your election and any changes made will be reflected immediately to your currentselection.

Percent 10%

Set Contribution Amount (You may contribute 1 to 10% of your compensation each period)



Offering Summary

New Enrollments

Offering History

Your Information

January 2011


05/06/2011








Print

ESPP > Offering Summary

Status




Cancel Your Election Close X

Cancelancel Confirm

If you cancel your participation, your contributions will be stopped. You may either have your contribution balance refunded or use it to purchase stock on the next purchase date.

Refund my contributions.Use my contributions to purchase stock on the next purchase date.

10 AECOM ESPP

Selling shares online Remember that you must open your LIIA before you are able to sell shares acquired through the ESPP or transfer shares to an account at another financial institution of your choice.

To sell shares online, select the “ESPP” tab, followed by “Brokerage” and “Sell Shares.” Then click “AECOM Technology Corp.” in the middle of the screen to continue.

You will come to the page shown here. Enter the requested information—number of shares to be sold, order type (see page 4) and distribution method. Click “Review Order.”

On the next screen, you will need to re-enter your Password and click “Submit Order.”

Selling shares online



Sell Shares


Print

ESPP > Brokerage > Sell Shares

Please place your equity order

Review Order

Market

Order Type

Note: Timeframe for receipt of check or wire transfer is approximately 7-10 business days from trade date.

Note: Not all currencies are available for all distribution methods.

In some circumstances orders entered near the market close may not reach the market in time for execution.

Sale Order Information

Distribution Method

Duration

Proceeds to remain in brokerage account (US Dollar Only)

Limit

Check

US Bank Wire Instructions

Please Select Currency

Cancel

Wire Transfer

Currency

Day

Good Until Cancelled

Available Shares

Security

Brokerage Account

QuantityShares subject to disqualifying disposition: 0Other: 5,000

123WY123

AECOM






Sell Shares

Symbol Description

Click on the symbol below to sell shares.

Price Share Amount Share Value

5,000 $120,700.00$24.14ACM AECOM Technology Corp.

5,000 $120,700.00Total


Print

ESPP > Brokerage > Sell Shares




11AECOM ESPP

To review plan documentsYou can access important documents on the website:*

− FAQ

− AECOM Technology Corporation Employee Stock Purchase Plan Services

Select the “ESPP” tab, followed by “Plan Information” and “Communications Library.”

AECOM has informed Merrill Lynch that the prospectus for the ESPP is posted on myAECOM in the North America/Human Resources/Retirement Benefits section.

* The plan documents posted in the Benefits OnLine Communications Library are prepared and made available to you by AECOM, not Merrill Lynch.



Plan Documents/Forms


Print

ESPP > Plan Information > Communications Library

• FAQ• AECOM Technology Corporation Employee Stock Purchase Plan Services

To download and view the documents provided by this site, you must have the Adobe Acrobat Reader. Click to download the Adobe Acrobat Reader from Adobe's site.

Please refer to the provisions in your individual award agreement, if applicable, and/or the official stock plan document, which govern the terms of your award. The provisions in the award agreement, if applicable, and stock plan document supersede any information, including conflicting information, reflected on the website.




Accessing plan documents

Neither AECOM nor Merrill Lynch, Pierce, Fenner & Smith Incorporated (including its representatives) provides tax, accounting or legal advice. Any tax statements contained herein were not intended or written to be used, and cannot be used, for the purpose of avoiding U.S. federal, state or local tax penalties. Please consult your own independent advisor as to any tax, accounting or legal statements made herein.

Access and Support 24 Hours a Day, Seven Days a Week … Online or by Phone**

– Online: www.benefits.ml.com

– By Phone: (877) MER-4ACM [637-4226]

– Outside the U.S., Puerto Rico or Canada: Use the AT&T country code plus 1 (877) MER-4ACM [637-4226], or dial direct: 1 (609) 818-8894.

** Subject to occasional downtime for system maintenance.

12 AECOM ESPP

Commission ratesMerrill Lynch charges participants in the AECOM ESPP discounted commissions for shares sold in connection with the ESPP, as follows:

Service Channel Transaction Cost Postage & Handling

Online $0.03 per share, subject to $24.95 minimum $5.35

Participant service representative or the Global Corporate and Institutional Advisory Services (GCIAS) Group

• 0 – 24,999 shares: $0.06 per share, subject to $29.95 minimum

• 25,000 – 49,999 shares: $0.05 per share• 50,000 – 99,999 shares: $0.04 per share• 100,000+ shares: $0.03 per share

$5.35

Service fees

13AECOM ESPP

Service Cost

Wire Transfer $7.50 (if requested through the AwardChoice® system, which may be accessed through Benefits OnLine, or by contacting a participant service representative or Merrill Lynch Financial Advisor). Wires may not be available in all currencies. Requests made outside of these service channels are subject to retail brokerage wire transfer fees.

Non-U.S. Currency Checks

$15.00 (if requested through the AwardChoice system, which may be accessed through Benefits OnLine, a participant service representative or a Merrill Lynch Financial Advisor). Checks may not be available in all currencies. Requests made outside of these channels are subject to retail brokerage check fees.

Stock Certificate/DRS Statement Requests

Please contact a participant service representative for fees associated with these requests. Fees vary depending on your company’s participation in the Direct Registration System (DRS) at the Depository Trust Company.

SEC Transaction Fee Fee assessed and paid to the Securities and Exchange Commission (SEC) on each stock sale. As of January 21, 2011, the fee is $0.0192 for each $1,000.00 or fraction thereof. This fee is subject to change by the SEC.

Brokerage Account Transfer

As an active participant in the AECOM ESPP, you will not be charged a fee to transfer assets to another broker via a Depository Trust Company (DTC) transfer.

Limited Individual Investor Account (LIIA)

As an active participant in the AECOM ESPP, you are not charged an account fee to maintain company stock holdings. Active participants include active employees and employees who have been terminated for less than two years after their last transaction. If you are no longer an active participant and you maintain a balance (cash or securities), you are subject to an annual account fee of $65 (and a low balance fee of $15 per quarter if the balance of the account is below $25,000). Speak with a participant service representative for more information.

Commissions and account fees for transactions and services unrelated to the AECOM ESPP are subject to standard Merrill Lynch rates. Please speak with a Merrill Lynch representative for further information.

* You will be subject to the applicable fees, terms and conditions associated with the retail brokerage account established in connection with your ESPP. All brokerage account fees are subject to change upon notification to you.

Other fees*