Form 4: Tetra Tech President Argus Reports Stock Transactions

Tetra Tech President Roger R. Argus reported multiple transactions involving common stock and restricted stock units, including acquisitions from vesting and shares withheld for tax liabilities.

Summary

• Roger R. Argus, President of Tetra Tech Inc. (TTEK), reported several transactions on November 18, 2025.
• Acquired 2,055 shares of common stock upon the vesting of Restricted Stock Units (RSUs) at a price of $0.
• Acquired 2,535 shares of common stock upon the vesting of Restricted Stock Units (RSUs) at a price of $0.
• Disposed of 2,533 shares of common stock at $35.69 to cover tax liabilities related to the vesting of RSUs.
• Acquired 21,902 shares of common stock from the vesting of performance stock units (PSUs) earned under the 2018 Equity Incentive Plan at a price of $0.
• Disposed of 12,086 shares of common stock at $35.69 to cover tax liabilities related to the vesting of PSUs.
• The amount of securities beneficially owned was updated to reflect that 149 shares of common stock were acquired by the Reporting Person on December 15, 2024, pursuant to the Tetra Tech, Inc. Employee Stock Purchase Plan (ESPP).
• Following these reported transactions, the direct beneficial ownership of common stock is 37,565 shares.
• Following these reported transactions, the beneficial ownership of derivative securities (RSUs) is 0 for the first award and 2,535 for the second award.

Sentiment

Score: 7

Explanation: The filing reflects routine executive compensation events, primarily the vesting of equity awards and subsequent tax-related share withholdings. The net effect is an increase in the reporting person's direct beneficial ownership of common stock, which is generally a positive signal of alignment with shareholder interests.

Positives

• President Roger R. Argus acquired a significant number of shares (26,492 shares) through the vesting of Restricted Stock Units (RSUs) and Performance Stock Units (PSUs), aligning executive interests with shareholder value.
• An additional 149 shares were acquired through the Employee Stock Purchase Plan (ESPP), further increasing insider ownership.

Negatives

• A total of 14,619 shares (2,533 + 12,086) were disposed of to cover tax liabilities associated with the vesting of restricted stock units and performance stock units, which is a routine but still a disposition of shares.

Future Outlook

NA

Industry Context

NA

Related Party Transactions

• Acquisition of common stock through the vesting of Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) as part of executive compensation.
• Acquisition of common stock through the Tetra Tech, Inc. Employee Stock Purchase Plan (ESPP).
• Disposal of common stock to cover tax liabilities related to the vesting of RSUs and PSUs.

Stakeholder Impact

• Shareholders: Increased alignment of executive interests with shareholders due to the vesting of equity awards and participation in the ESPP, leading to higher direct beneficial ownership.
• Employees: The Employee Stock Purchase Plan (ESPP) acquisition highlights the availability and utilization of employee stock ownership programs within the company.

Next Steps

• Remaining Restricted Stock Units (RSUs) from the award dated November 18, 2022, will continue to vest at 25% annually until fully vested.
• Remaining Restricted Stock Units (RSUs) from the award dated November 18, 2023, will continue to vest at 25% annually until fully vested.

Key Dates

Recommendation

This Form 4 details routine executive compensation events, specifically the vesting of restricted stock units and performance stock units, along with associated tax withholdings. While the net effect is an increase in the executive's direct beneficial ownership, these are expected transactions and do not provide new fundamental information to warrant a change in investment recommendation. The transactions reflect standard long-term incentive plans.

Keywords

TTEK, Tetra Tech, Form 4, insider trading, stock transactions, RSU, PSU, executive compensation, Roger R. Argus