|                                              |
|----------------------------------------------|
|                                              |  |  |  |  |
| Florida                                      |   | 000-26058 |   | 59-3264661 |
| State or other jurisdiction of incorporation |   | Commission File Number |   | IRS Employer Identification No. |

|        |
|--------|
|        |  |
|  ̈ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |

|        |
|--------|
|        |  |
|  ̈ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |

|        |
|--------|
|        |  |
|  ̈ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |

|        |
|--------|
|        |  |
|  ̈ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
|   |   |

----

|                |
|----------------|
|                |  |
| Item 5.07 | Submission of Matters to a Vote of Security Holders. |

|                                                                                          |
|------------------------------------------------------------------------------------------|
|                                                                                          |  |  |  |  |  |  |  |  |  |
| MATTER                                                                                   |   | FOR |   | WITHHOLD |   | BROKERNON-VOTES |
| (1) Elect four Class III directors to hold office for a three-year term expiring in 2021 |   |   |   |   |   |   |
| David L. Dunkel                                                                          |   | 21,372,423 |  |   | 613,418 |  |   | 1,362,982 |  |
| Mark F. Furlong                                                                          |   | 20,624,264 |  |   | 1,361,577 |  |   | 1,362,982 |  |
| Randall A. Mehl                                                                          |   | 21,053,316 |  |   | 932,525 |  |   | 1,362,982 |  |
| N. John Simmons                                                                          |   | 21,049,270 |  |   | 936,571 |  |   | 1,362,982 |  |

|                                                                                                                              |
|------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                              |  |  |  |  |  |  |  |  |  |  |  |  |
|                                                                                                                         |   | FOR |   | AGAINST |   | ABSTAIN |   | BROKERNON-VOTES |
| (2) Ratify the appointment of Deloitte & Touche LLP as Kforce’s independent registered public accountants for 2018 |   | 23,072,753 |  |   | 271,364 |  |   | 4,706 |  |   | — |  |

|                                                      |
|------------------------------------------------------|
|                                                      |  |  |  |  |  |  |  |  |  |  |  |  |
|                                                 |   | FOR |   | AGAINST |   | ABSTAIN |   | BROKERNON-VOTES |
| (3) Advisory vote on Kforce's executive compensation |   | 21,543,788 |  |   | 434,995 |  |   | 7,058 |  |   | 1,362,982 |  |

----

|                      |
|----------------------|
|                      |  |  |  |  |  |  |
|                 |   |   |   | KFORCE INC. |
|                 |   |   |   | (Registrant)  |
|                 |   |   |   |
| Date: April 26, 2018 |   |   |   | By: |   | /s/    DAVID M. KELLY       |
|                 |   |   |   |   |   | David M. Kelly |
|                 |   |   |   |   |   | Senior Vice President, Chief Financial Officer |
|                 |   |   |   |   |   | (Principal Financial Officer) |
|                 |   |   |   |
| Date: April 26, 2018 |   |   |   | By: |   | /s/    JEFFREY B. HACKMAN         |
|                 |   |   |   |   |   | Jeffrey B. Hackman |
|                 |   |   |   |   |   | Senior Vice President, Finance & Accounting |
|                 |   |   |   |   |   | (Principal Accounting Officer) |