EME

Includes shares issuable in respect of restricted stock units.

The shares reported herein as acquired represent shares of common stock issuable in the future with respect to restricted stock units ("RSUs") granted to the reporting person.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future with respect to restricted stock units ("RSUs") granted to the reporting person.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future with respect to restricted stock units ("RSUs") granted to the reporting person.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future with respect to restricted stock units ("RSUs") granted to the reporting person.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future with respect to restricted stock units ("RSUs") granted to the reporting person.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future with respect to restricted stock units ("RSUs") granted to the reporting person.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future with respect to restricted stock units ("RSUs") granted to the reporting person.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future with respect to restricted stock units ("RSUs") granted to the reporting person.

Includes shares issuable in respect of RSUs.

The price reported is the weighted average of all the shares sold on May, 11 2026. The shares were sold at an average price of $925.78, at varying prices in the range of $925.00 to $927.43. The Reporting Person undertakes, upon request by the Staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price.

Includes shares issuable in respect of restricted stock units.

Includes shares issuable in respect of restricted stock units.

Includes shares issuable in respect of restricted stock units.

The price reported is the weighted average of all the shares sold on April, 30 2026. The shares were sold at an average price of $895.19, at varying prices in the range of $892.95 to $896.35. The Reporting Person undertakes, upon request by the Staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price.

Includes shares issuable in respect of restricted stock units.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on April 30, 2026. The RSUs issued on April 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on April 30, 2026. The RSUs issued on April 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on April 30, 2026. The RSUs issued on April 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Includes shares issuable in respect of restricted stock units.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on April 30, 2026. The RSUs issued on April 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Includes shares issuable in respect of restricted stock units.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on April 30, 2026. The RSUs issued on April 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Includes shares issuable in respect of restricted stock units.

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan dated as of December 2, 2025 and effective as of March 5, 2026.

The price reported is the weighted average of all the shares sold on March 5, 2026. The shares were sold at an average price of $729.48, at varying prices in the range of $705.55 to $735.36. The Reporting person undertakes, upon request by the Staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price.

Includes shares issuable in respect of restricted stock units.

Includes shares issuable in respect of restricted stock units.

Includes shares issuable in respect of restricted stock units.

Includes shares issuable in respect of restricted stock units.

Includes shares issuable in respect of restricted stock units.

Includes shares issuable in respect of restricted stock units.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on January 30, 2026. The RSUs issued on January 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on January 30, 2026. The RSUs issued on January 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on January 30, 2026. The RSUs issued on January 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on January 30, 2026. The RSUs issued on January 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on January 30, 2026. The RSUs issued on January 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on January 30, 2026. The RSUs issued on January 30, 2026 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future in respect of restricted stock units ("RSUs") granted pursuant to the EMCOR Group, Inc. Long Term Incentive Plan.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future in respect of restricted stock units ("RSUs") granted pursuant to the EMCOR Group, Inc. Long Term Incentive Plan.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future in respect of RSUs granted pursuant to the EMCOR Group, Inc. Long Term Incentive Plan.

Includes shares issuable in respect of restricted stock units ("RSUs").

The shares reported herein as acquired represent shares of common stock issuable in the future in respect of restricted stock units ("RSUs") granted pursuant to the EMCOR Group, Inc. Long Term Incentive Plan.

Includes shares issuable in respect of RSUs.

This Form 4 is being filed late due to an inadvertent administrative error.

Includes shares issuable in respect of restricted stock units ("RSUs").

This Form 4 is being filed late due to an inadvertent administrative error.

Includes shares issuable in respect of restricted stock units ("RSUs").

The price reported is the weighted average of all the shares sold on November 3, 2025. The shares were sold at an average price of $677.22, at varying prices in the range of $677.085 to $677.89. The reporting person undertakes, upon request by the Staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price.

Includes shares issuable in respect of restricted stock units. Includes shares held in the name of the Robin Walker-lee Living Trust, of which the reporting person is trustee and sole beneficiary.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on October 30, 2025. The RSUs issued on October 30, 2025 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on October 30, 2025. The RSUs issued on October 30, 2025 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on October 30, 2025. The RSUs issued on October 30, 2025 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on October 30, 2025. The RSUs issued on October 30, 2025 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on October 30, 2025. The RSUs issued on October 30, 2025 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

The shares reported herein as acquired represent shares of common stock issuable in the future with respect to restricted stock units ("RSUs") granted to the reporting person.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on July 31, 2025. The RSUs issued on July 31, 2025 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on July 31, 2025. The RSUs issued on July 31, 2025 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.

Represents restricted stock units ("RSUs") issued in respect of already outstanding RSUs as a consequence of a dividend paid on the Company's common stock on July 31, 2025. The RSUs issued on July 31, 2025 are subject to the same vesting and forfeiture provisions as the RSUs in respect of which they have been issued.

Includes shares issuable in respect of RSUs.