X0407 4/A 2023-05-17 2023-05-18 0000055135 KELLY SERVICES INC KELYA 0001368659 Adolph Gerald S 999 W. BIG BEAVER ROAD TROY MI 48084 1 0 Class A Common Stock, Par Value $1 1.00 2023-05-17 4 A 0 6815.7034 18.34 A 2019-05-08 2029-05-08 Class A Common Stock, Par Value $1 6815.7034 36620.533 I by Issuer's Non-Employee Directors Deferred Compensation Plan Class A Common Stock, Par Value $1 1.00 2023-05-18 4 A 0 6162.9153 18.66 A 2019-05-08 2029-05-08 Class A Common Stock, Par Value $1 6162.9153 42783.4483 I by Issuer's Non-Employee Directors Deferred Compensation Plan Shares deferred pursuant to the Kelly Services, Inc. Non-Employee Directors Deferred Compensation Plan. Cash portion of retainer deferred into Class A Common Stock pursuant to the Kelly Services, Inc. Non-Employee Directors Deferred Compensation Plan. Includes shares acquired pursuant to a dividend reinvestment feature of the Kelly Services, Inc. Non-Employee Directors Deferred Compensation Plan. /s/ Cynthia D. Mull, attorney-in-fact for Mr. Adolph 2023-05-18