PWR · Quanta Services, Inc.

The restricted stock units are settled in shares of common stock on a one-for-one basis.

The restricted stock units were granted on May 22, 2025 and vested and settled on June 1, 2026.

Includes unvested restricted stock units and vested restricted stock units for which settlement has been deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis.

The restricted stock units were granted on May 22, 2025 and vested and settled on June 1, 2026.

The restricted stock units are settled in shares of common stock on a one-for-one basis.

The restricted stock units were granted on May 22, 2025 and vested and settled on June 1, 2026.

Includes unvested restricted stock units and vested restricted stock units for which settlement has been deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

The restricted stock units are settled in shares of common stock on a one-for-one basis.

The restricted stock units were granted on May 22, 2025 and vested and settled on June 1, 2026.

The restricted stock units are settled in shares of common stock on a one-for-one basis.

The restricted stock units were granted on May 22, 2025 and vested and settled on June 1, 2026.

The restricted stock units are settled in shares of common stock on a one-for-one basis.

The restricted stock units were granted on May 22, 2025 and vested and settled on June 1, 2026.

Includes unvested restricted stock units and vested restricted stock units for which settlement has been deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

The restricted stock units were granted on May 22, 2025 and vested and settled on June 1, 2026.

The restricted stock units are settled in shares of common stock on a one-for-one basis.

The restricted stock units vested on May 28, 2016; however, settlement was deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

Includes unvested restricted stock units and vested restricted stock units for which settlement has been deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

Unless otherwise provided in the award agreement, the restricted stock units vest and settle on June 1, 2027. Settlement of all or a portion of the restricted stock units may be deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

Includes unvested restricted stock units and vested restricted stock units for which settlement has been deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis.

The restricted stock units were granted on May 22, 2025 and vested and settled on May 21, 2026.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

Unless otherwise provided in the award agreement, the restricted stock units vest and settle on June 1, 2027. Settlement of all or a portion of the restricted stock units may be deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

Unless otherwise provided in the award agreement, the restricted stock units vest and settle on June 1, 2027. Settlement of all or a portion of the restricted stock units may be deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

Unless otherwise provided in the award agreement, the restricted stock units vest and settle on June 1, 2027. Settlement of all or a portion of the restricted stock units may be deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

Unless otherwise provided in the award agreement, the restricted stock units vest and settle on June 1, 2027. Settlement of all or a portion of the restricted stock units may be deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

Includes unvested restricted stock units and vested restricted stock units for which settlement has been deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

Unless otherwise provided in the award agreement, the restricted stock units vest and settle on June 1, 2027. Settlement of all or a portion of the restricted stock units may be deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

Unless otherwise provided in the award agreement, the restricted stock units vest and settle on June 1, 2027. Settlement of all or a portion of the restricted stock units may be deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

Includes unvested restricted stock units and vested restricted stock units for which settlement has been deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

Unless otherwise provided in the award agreement, the restricted stock units vest and settle on June 1, 2027. Settlement of all or a portion of the restricted stock units may be deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The restricted stock units are settled in shares of common stock on a one-for-one basis, provided that in certain circumstances the reporting person may elect to settle up to 50% of the restricted stock units in cash.

Unless otherwise provided in the award agreement, the restricted stock units vest and settle on June 1, 2027. Settlement of all or a portion of the restricted stock units may be deferred by the reporting person pursuant to the terms of a nonqualified deferred compensation plan maintained by the Company.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $773.10 to $774.065.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $777.38 to $777.855.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $767.05 to $768.035.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $771.08 to $772.06.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $768.06 to $769.055.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $776.25 to $777.138.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $767.09 to $768.085.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $766.043 to $767.04.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $775.25 to $776.235.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $772.12 to $773.105.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $765.00 to $765.997. The reporting person undertakes to provide to Quanta Services, Inc., any security holder of Quanta Services, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this and the following footnotes.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $765.00 to $765.997. The reporting person undertakes to provide to Quanta Services, Inc., any security holder of Quanta Services, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this and the following footnotes.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $773.135 to $774.065.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $769.095 to $770.09.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $774.21 to $775.205.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $772.085 to $773.07.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $770.08 to $771.074.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $768.095 to $769.091.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $771.10 to $772.095.