1 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549-1004 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED): AUGUST 6, 2001 PROBUSINESS SERVICES, INC. (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) DELAWARE 001-13325-89 94-2976066 (STATE OR OTHER JURISDICTION OF COMMISSION FILE NO. (I.R.S. EMPLOYER INCORPORATION OR ORGANIZATION) IDENTIFICATION NUMBER) 4125 Hopyard Rd. Pleasanton, California 94588 (Address of principal executive offices) (925) 737-3500 (Registrant's telephone number, including area code) 2 ITEM 5. OTHER EVENTS On August 6, 2001, ProBusiness Services, Inc. issued a press release announcing that the Board of Directors of ProBusiness Services, Inc. approved the adoption of a Preferred Stock Rights Agreement. The press release is attached as Exhibit 99 to this Form 8-K. ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS (c) Exhibits. Exhibit 99 ProBusiness Services, Inc. Press Release issued August 6, 2001. 3 SIGNATURE Pursuant to the requirements of the Securities Exchange Act or 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ProBusiness Services, Inc. (Registrant) Date: August 6, 2001 By: /s/ Steven Klei --------------------------------- Steven Klei Executive Vice President, Finance, Chief Financial Officer and Secretary 4 EXHIBIT INDEX Exhibit Number - ------- 99 ProBusiness Services, Inc. Press Release issued August 6, 2001.