One of our priorities is listening to the views of our stockholders and considering them as we make decisions in the boardroom. Through management, we engage with stockholders during an annual outreach cycle and, based on this engagement, we made significant enhancements to the Company's governance and compensation programs over the last few years.

Chief Executive Compensation

Our stockholders continue to tell us that a fundamental principle underlying any compensation program is that it should pay for performance. We agree, and our feedback from stockholders continues to contribute to our compensation decisions. Our Compensation Committee regularly assesses the Company's compensation programs, and the enhancements are designed to further align our business and talent strategies with the long-term interests of our stockholders.

Board Refreshment and Diversity

The issue of Board refreshment has emerged as an important area of focus for stockholders. We agree that new perspectives and new ideas are critical to a forward-looking and strategic Board. At the same time, it is also important to benefit from the valuable experience and insight that longer-serving Directors bring to the boardroom.

Ensuring diverse perspectives, including a mix of skills, experience and backgrounds, is key to effectively representing the long-term interests of our stockholders. Doing so is a top priority of the Board. In the last four years, three new Directors were elected and one long-term Director retired. As a result, the average tenure for our Directors has been reduced and our Board's gender diversity is currently one third women. Further, the Board determined that the role of Presiding Director would rotate to ensure independence,

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and the term of the Presiding Director would be limited to four years. We remain committed to ensuring that your Board is composed of a highly capable and diverse group of Directors, well-equipped to oversee the success of the business and effectively represent the interests of our stockholders.

Board Risk Oversight

The Board oversees the Company's risk profile and monitors the management of risks within the Company. The Strategic Planning and Enterprise Risk Committee has been tasked with coordinating the Board's risk oversight function. This Committee oversees our enterprise risk management policies and procedures, particularly in the areas of strategic, operational and compliance risk. Each of our other three Committees also oversees specific areas of risk management.

Cybersecurity is also a critical priority for the entire Company. The Strategic Planning and Enterprise Risk Committee receives reports from the Chief Information Officer regarding the Company's information technology systems, and dedicates time in its agenda for a discussion of cybersecurity and other important risk issues.

Board Accountability

As we conduct the activities of this Board, we consider accountability to stockholders as not only a mark of good governance, but a key to the long-term success of our Company. We remain accountable through a variety of governance practices, including:

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The annual election of all Directors;



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A majority vote bylaw in uncontested Director elections;



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An independent Presiding Director who presides over executive sessions of all independent directors;



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An annual Board evaluation process;



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The right of stockholders to call a special meeting;



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An annual advisory vote on executive compensation; and



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Proactive stockholder engagement.

Communicating with the Board

Finally, we value your input and encourage you to share your thoughts or concerns with us. To facilitate communication by stockholders, please address communications to the Tetra Tech Board of Directors in care of the Corporate Secretary, Tetra Tech, Inc., 3475 E. Foothill Boulevard, Pasadena, California 91107 or by email toasktheboard@tetratech.com.

As always, thank you for the trust you have placed in us.