QUANTA SERVICES, INC.

9. EQUITY:

Stock Repurchases

Quanta’s Board of Directors approved a new stock repurchase program, effective as of May 21, 2026, that authorizes Quanta to purchase, from time to time, up to $1.00 billion of its outstanding common stock, and as of September 30, 2026, $1.00 billion remained available under this repurchase program. Quanta’s prior stock repurchase program expired on June 30, 2026.

During the nine months ended September 30, 2026, Quanta didnot repurchase any shares of its common stock under its stock repurchase programs. During the three months ended September 30, 2025, Quanta didnot repurchase any shares of its common stock under its stock repurchase program. During the nine months ended September 30, 2025, Quanta repurchased 538,559 shares of its common stock in the open market under its stock repurchase program for $134.6 million.

Repurchases may be implemented through open market repurchases or privately negotiated transactions, at management’s discretion, based on market and business conditions, applicable contractual and legal requirements and other factors. Quanta is not obligated to acquire any specific amount of common stock, and the repurchase program may be modified or terminated by Quanta’s Board of Directors at any time at its sole discretion and without notice.

Dividends

Quanta declared and paid the following cash dividends and cash dividend equivalents during 2025 and the first nine months of 2026 (in thousands, except per share amounts):