COMFORT SYSTEMS USA INC Earnings Per Share Disclosure

14. Stockholders’ Equity

Stock Incentive Plans

In May 2017, our stockholders approved our 2017 Omnibus Incentive Plan (the “2017 Plan”), which provides for the granting of incentive or non-qualified stock options, stock appreciation rights, restricted or deferred stock, dividend equivalents or other incentive awards to directors, employees, or consultants. The number of shares authorized and reserved for issuance under the 2017 Plan is 2.9 million shares. As of December 31, 2025, there were 1.4 million shares available for issuance under this plan. The 2017 Plan will expire in May 2027.

Share Repurchase Program

On March 29, 2007, our Board of Directors (the “Board”) approved a stock repurchase program to acquire up to 1.0 million shares of our outstanding common stock. Subsequently, the Board has from time to time increased the number of shares that may be acquired under the program and approved extensions of the program. On May 16, 2025, the Board approved an extension to the program by increasing the shares authorized for repurchase by 0.4 million shares. Since the inception of the repurchase program, the Board has approved 11.8 million shares to be repurchased. As of December 31, 2025, we have repurchased a cumulative total of 10.9 million shares at an average price of $50.15 per share under the repurchase program.

The share repurchases will be made from time to time at our discretion in the open market or privately negotiated transactions, including pursuant to Rule 10b5-1 share repurchase plans, as permitted by securities laws and other legal requirements, and subject to market conditions and other factors. The Board may modify, suspend, extend or terminate the program at any time. During the year ended December 31, 2025, we repurchased 0.4 million shares for approximately $217.9 million, inclusive of the applicable excise tax, at an average price of $489.40 per share.

Earnings Per Share

Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of shares of common stock outstanding during the year. Diluted EPS is computed considering the dilutive effect of stock options, restricted stock, restricted stock units and performance stock units. The vesting of contingently issuable performance stock units is based on the achievement of certain EPS targets and total shareholder return. These shares are considered contingently issuable shares for purposes of calculating diluted EPS. These shares are not included in the diluted EPS denominator until the performance criteria are met, if it is assumed that the end of the reporting period was the end of the contingency period.

Unvested restricted stock, restricted stock units and performance stock units are included in diluted EPS, weighted outstanding until the shares and units vest. Upon vesting, the vested restricted stock, restricted stock units and performance stock units are included in basic EPS weighted outstanding from the vesting date.

The number of anti-dilutive stock-based awards excluded from the calculation of diluted EPS was less than 0.1 million for the years ended December 31, 2025, 2024 and 2023.

The following table reconciles the number of shares outstanding with the number of shares used in computing basic and diluted EPS for each of the periods presented (in thousands):

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