AECOM

Meeting Information

This summary highlights information contained elsewhere in our Proxy Statement and does not contain all of the information

that you should consider. We encourage you to read the entire Proxy Statement carefully before voting. We made this Proxy

Statement first available to stockholders on January 20, 2026.

Stockholder Voting Matters

How to Vote

Your Vote is Important

Whether or not you plan to attend the 2026 Annual Meeting, we request that you vote (a) online, (b) by telephone or (c) by

requesting a printed copy of the proxy materials and using the proxy card or voting instruction card enclosed therein as

promptly as possible in order to ensure your representation at the 2026 Annual Meeting.

You may revoke your proxy at any time before it is exercised by giving our Corporate Secretary written notice of revocation,

submitting a later dated proxy by Internet, telephone or mail or by attending the 2026 Annual Meeting and voting.

Please note, however, that if your shares are held of record by a broker, bank or other nominee and you wish to vote at the

2026 Annual Meeting, you must obtain from the record holder a proxy issued in your name.

Our Current Board of Directors

Delivering Best-in-Class Governance

Direct engagement between AECOM management and the Board with our stockholders creates the greatest degree of

alignment and best in class governance outcomes. As a result, our governance structure includes the following features:

This strong governance structure is intended to safeguard and promote the long-term interests of AECOM and its

stockholders consistent with the Company’s commitment to maximize long-term value.

Corporate Governance Highlights

Executive Compensation Practices

Our executive compensation program provides competitive packages that attract, motivate, reward and retain key talent

critical to achieving long-term financial and strategic objectives, and creating long-term stockholder value.

What We Do:

Pay for Performance — A majority of the compensation opportunity for our NEOs is based on the achievement of key measures that drive value creation, including Adjusted Earnings Before Interest, Taxes, Depreciation, and Amortization (“Adjusted EBITDA”), segment adjusted operating margins, adjusted earnings per share growth, days sales outstanding ("DSO"), Return on Invested Capital (“ROIC”) improvement, and Relative Total Stockholder Return (“TSR”).

Rigorous Goal Setting — We undergo a detailed process of analyzing and reviewing a number of factors including, but not limited to our short and long-term financial plan; investor expectations; industry and peer performance; overall attainability; and impact on stockholder value creation.

Stockholder Engagement — We engage with stockholders throughout the year on proxy and governance matters, including direct outreach to stockholders that represent the ownership of more than 50% of our stock.

Stock Ownership Guidelines — We have stock ownership guidelines that require NEOs and non-employee directors to maintain a specific equity stake in the Company to align their interests with stockholders. The CEO ownership guideline is six times the base salary and the guideline for other NEOs is three times base salary. Non-employee directors must maintain ownership at a multiple of five times the annual retainer by the end of the fiscal year following the fifth anniversary of the director's initial appointment to the Board.

Independent Consultant — We utilize the services of an independent compensation consultant who does not provide any other services to the Company.

Risk Assessment — Our compensation consultant performs an independent risk assessment of compensation programs.

Clawback Policy — We have a clawback policy in compliance with Rule 10D-1 of the Securities Exchange Act of 1934 (“Exchange Act”) and NYSE Listing Standards, which requires us to recoup erroneously awarded incentive-based compensation paid to current and former officers in connection with an accounting restatement.

Market Study Analysis — We annually seek to understand labor market trends pertaining to amount and form of executive pay delivery through comprehensive competitive analyses.

Annual Say-on-Pay Vote — We have a policy to hold an advisory vote to approve the Company’s executive compensation on an annual basis.

Cash Severance Policy — We have a policy prohibiting cash severance benefits to exceed 2.99 times the sum of an executive officer’s base salary and annual target bonus without shareholder approval.

What We Don’t Do:

Dividends and Dividend Equivalents on Unvested Awards — Our stock plan prohibits the payout of dividends or dividend equivalents on unvested long-term incentive equity awards unless and until the underlying award vests.

Stock Option Repricing — Our stock plan prohibits re-pricing underwater stock options or stock appreciation rights without stockholder approval.

Single Trigger Equity Acceleration — We do not maintain plans or agreements that provide for automatic “single trigger” equity acceleration or bonus payments in connection with a change in control (rather, any payment of benefit requires a qualifying termination of employment in connection with a change in control known as “double trigger”).

Tax Gross-Ups — We do not provide tax gross-ups to NEOs.

Hedging and Pledging — We prohibit hedging transactions involving AECOM common stock and do not allow trading in puts, calls, options or other similar transactions. In addition, we prohibit the pledging of AECOM common stock except in certain limited circumstances subject to Company approval and demonstration of the ability to repay the applicable loan without selling such securities.

Environmental, Social and Governance Matters

Our purpose of delivering a better world is at the core of all that we do. As the trusted global infrastructure leader, we are

determined and well-positioned to deliver positive, impactful and Sustainable Legacies for our company, our communities

and our planet. Through our projects and our operations, we have both a significant opportunity and a responsibility to

protect, enhance and restore the world’s natural and social systems. Through strategic nonprofit partnerships, pro bono

work, skills-based volunteering and philanthropy, our corporate responsibility platform is focused on delivering access to safe

and secure infrastructure to those who need it most, creating opportunity for the leaders of tomorrow and protecting our

planet so that our company can fulfill its purpose to deliver a better world. As part of our pro bono program, our technical

experts partnered with nonprofit organizations in their local communities to provide critical design, engineering and

infrastructure solutions.

Driving Sustainability Across Our Operations

We maintain a global sustainability council to coordinate and drive consistent execution of our sustainability and resilience

initiatives across AECOM. The council’s functions include: (i) assessing the impact of the Company’s services and

operations and advising on how the Company may enhance its sustainability performance; (ii) advising on appropriate global

sustainability goals, commitments and targets; (iii) advising on suitable resourcing and investments to fulfill and deliver on

the Company’s Sustainable Legacies commitments; (iv) shaping the Company’s sustainability-related policies and

disclosure; (v) assessing the potential impact of climate change on the Company’s services and operations and providing a

global forum to share ideas on how the Company’s unique offerings and solutions can enable mitigation, adaptation and

resilience to climate change that will develop and support buildings, infrastructure assets and communities; and (vi)

providing a risk framework for evaluating client opportunities to ensure that they align with our Sustainable Legacies

objectives. The council is composed of employees with relevant professional expertise and experience including strategic

and market sector leadership; consulting expertise; operations; procurement, legal, investor relations, treasury, real estate

and facilities management and other corporate functions. Our Board has oversight over sustainability matters. Additional

information regarding our Sustainable Legacies initiatives is located on the investor relations section of our website, at

https://investors.aecom.com/sustainability.

Commitment to Our People (Human Capital Management)

Our principal asset is our employees, the majority of which have technical and professional backgrounds and undergraduate

and/or advanced degrees in their respective areas of expertise. At the end of our fiscal 2025, we employed approximately

51,000 people. We believe that the quality and level of service that our professionals deliver are among the highest in our

industry.

We are committed to enhancing our position as a leading employer in our industry by attracting and retaining some of the

best technical professionals in the world. Critical to our continued success is our ability to offer a compelling employee value

proposition that promises competitive pay and benefits, an environment that supports flexibility and well-being and

encourages collaboration and innovation, and a shared commitment to technical excellence, continuous learning and career

growth. This understanding informs our approach to managing our human capital resources. Our human capital objectives

and initiatives are overseen by our Board as per our Corporate Governance Guidelines.

Additional information on our human capital management initiatives can be found on pages VIII to IX of this document.

Introduction