FSS

The option vested in three equal installments on May 05, 2017, 2018, and 2019. The option was set to expire on May 05, 2026. The reporting person used 29,680 shares of the option to satisfy the exercise price and taxes related to the option and will hold the remaining option shares.

828.7732 shares were acquired through the dividend reinvestment plan.

This transaction was executed in multiple trades at prices ranging from $110.61 to $110.78; the price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC, Federal Signal Corporation, or a security holder of Federal Signal Corporation.

The shares were disposed of in connection with a bona fide gift by the Reporting Person.

This represents a restricted stock award. All 2,577 shares vest on 02/27/2029.

Options become exercisable as to 1,408 shares on 02/27/2027, 1,408 shares on 02/27/2028 and the remaining 1,408 shares on 02/27/2029.

This represents a restricted stock award. All 11,810 shares vest on 02/27/2029.

Options become exercisable as to 2,599 shares on 02/27/2027, 2,598 shares on 02/27/2028 and the remaining 2,599 shares on 02/27/2029.

This represents a restricted stock award. All 590 shares vest on 02/27/2029.

Options become exercisable as to 596 shares on 02/27/2027, 595 shares on 02/27/2028 and the remaining 596 shares on 02/27/2029.

Options become exercisable as to 2,436 shares on 02/27/2027, 2,437 shares on 02/27/2028 and the remaining 2,436 shares on 02/27/2029.

Options become exercisable as to 11,914 shares on 02/27/2027, 11,914 shares on 02/27/2028 and the remaining 11,914 shares on 02/27/2029.

This represents a restricted stock award. All 2,416 shares vest on 02/27/2029.

This represents a restricted stock award. All 1,396 shares vest on 02/27/2029.

The shares were disposed of in connection with a bona fide gift by the Reporting Person to the University of Michigan.

2,152.0834 shares were acquired through the dividend reinvestment plan.

The shares were disposed of in connection with a bona fide gift by the Reporting Person.

This transaction was executed in multiple trades at prices ranging from $111.25 to $112.20; the price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC, Federal Signal Corporation, or a security holder of Federal Signal Corporation.

The option vested as to 6,594 shares on 05/04/2023, 6,593 shares on 05/04/2024 and 6,593 shares on 05/04/2025.

The option vested as to 5,735 shares on 05/04/2024 and 5,735 shares on 05/04/2025. The remaining 5,734 options will vest on 05/04/2026.

This transaction was executed in multiple trades at prices ranging from $110.71 to $110.78; the price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC, Federal Signal Corporation, or a security holder of Federal Signal Corporation.

This transaction was executed in multiple trades at prices ranging from $112.46 to $112.69; the price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC, Federal Signal Corporation, or a security holder of Federal Signal Corporation.