CERTIFICATIONS PURSUANT TO SECTION 906 EX-99.906CERT CERTIFICATION R. JAY GERKEN, Chief Executive Officer, and RICHARD PETEKA, Chief Financial Officer of Greenwich Street Series Fund - Salomon Brothers Variable All Cap Value Fund (the "Registrant"), each certify to the best of his or her knowledge that: 1. The Registrant's periodic report on Form N-CSR for the period ended June 30, 2003 (the "Form N-CSR") fully complies with the requirements of section 15(d) of the Securities Exchange Act of 1934, as amended; and 2. The information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant. Chief Executive Officer Chief Administrative Officer Greenwich Street Series Fund - Greenwich Street Series Fund - Salomon Brothers Variable Salomon Brothers Variable All Cap Value Fund All Cap Value Fund /s/ R. Jay Gerken /s/ Richard Peteka - ------------------- -------------------- R. Jay Gerken Richard Peteka Date: August 28, 2003 Date: August 28, 2003 This certification is being furnished to the Securities and Exchange Commission solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Form N-CSR with the Commission. CERTIFICATIONS PURSUANT TO SECTION 906 EX-99.906CERT CERTIFICATION R. JAY GERKEN, Chief Executive Officer, and RICHARD PETEKA, Chief Financial Officer of Greenwich Street Series Fund - Diversified Strategic Income Portfolio (the "Registrant"), each certify to the best of his or her knowledge that: 1. The Registrant's periodic report on Form N-CSR for the period ended June 30, 2003 (the "Form N-CSR") fully complies with the requirements of section 15(d) of the Securities Exchange Act of 1934, as amended; and 2. The information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant. Chief Executive Officer Chief Administrative Officer Greenwich Street Series Fund - Greenwich Street Series Fund - Diversified Strategic Income Portfolio Diversified Strategic Income Portfolio /s/ R. Jay Gerken /s/ Richard Peteka - --------------------------- ----------------------------------- R. Jay Gerken Richard Peteka Date: August 28, 2003 Date: August 28, 2003 This certification is being furnished to the Securities and Exchange Commission solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Form N-CSR with the Commission. CERTIFICATIONS PURSUANT TO SECTION 906 EX-99.906CERT CERTIFICATION R. JAY GERKEN, Chief Executive Officer, and RICHARD PETEKA, Chief Financial Officer of Greenwich Street Series Fund - Salomon Brothers Variable Emerging Growth Fund (the "Registrant"), each certify to the best of his or her knowledge that: 1. The Registrant's periodic report on Form N-CSR for the period ended June 30, 2003 (the "Form N-CSR") fully complies with the requirements of section 15(d) of the Securities Exchange Act of 1934, as amended; and 2. The information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant. Chief Executive Officer Chief Administrative Officer Greenwich Street Series Fund Greenwich Street Series Fund Salomon Brothers Variable Salomon Brothers Variable Emerging Growth Fund Emerging Growth Fund /s/ R. Jay Gerken /s/ Richard Peteka - --------------------------- ----------------------------------- R. Jay Gerken Richard Peteka Date: August 28, 2003 Date: August 28, 2003 This certification is being furnished to the Securities and Exchange Commission solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Form N-CSR with the Commission. CERTIFICATIONS PURSUANT TO SECTION 906 EX-99.906CERT CERTIFICATION R. JAY GERKEN, Chief Executive Officer, and LEWIS E. DAIDONE, Chief Administrative Officer of Greenwich Street Series Fund - Equity Index Portfolio (the "Registrant"), each certify to the best of his or her knowledge that: 1. The Registrant's periodic report on Form N-CSR for the period ended June 30, 2003 (the "Form N-CSR") fully complies with the requirements of section 15(d) of the Securities Exchange Act of 1934, as amended; and 2. The information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant. Chief Executive Officer Chief Administrative Officer Greenwich Street Series Fund Greenwich Street Series Fund Equity Index Portfolio Equity Index Portfolio /s/ R. Jay Gerken /s/ Lewis E. Daidone - --------------------------- ----------------------------------- R. Jay Gerken Lewis E. Daidone Date: August 28, 2003 Date: August 28, 2003 This certification is being furnished to the Securities and Exchange Commission solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Form N-CSR with the Commission. CERTIFICATIONS PURSUANT TO SECTION 906 EX-99.906CERT CERTIFICATION R. JAY GERKEN, Chief Executive Officer, and RICHARD PETEKA, Chief Financial Officer of Greenwich Street Series Fund - Salomon Brothers Variable Growth & Income Fund (the "Registrant"), each certify to the best of his or her knowledge that: 1. The Registrant's periodic report on Form N-CSR for the period ended June 30, 2003 (the "Form N-CSR") fully complies with the requirements of section 15(d) of the Securities Exchange Act of 1934, as amended; and 2. The information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant. Chief Executive Officer Chief Administrative Officer Greenwich Street Series Fund Greenwich Street Series Fund Salomon Brothers Variable Salomon Brothers Variable Growth & Income Fund Growth & Income Fund /s/ R. Jay Gerken /s/ Richard Peteka - --------------------------- ------------------------------- R. Jay Gerken Richard Peteka Date: August 28, 2003 Date: August 28, 2003 This certification is being furnished to the Securities and Exchange Commission solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Form N-CSR with the Commission. CERTIFICATIONS PURSUANT TO SECTION 906 EX-99.906CERT CERTIFICATION R. JAY GERKEN, Chief Executive Officer, and RICHARD PETEKA, Chief Financial Officer of Greenwich Street Series Fund - Salomon Brothers Variable International Equity Fund (the "Registrant"), each certify to the best of his or her knowledge that: 1. The Registrant's periodic report on Form N-CSR for the period ended June 30, 2003 (the "Form N-CSR") fully complies with the requirements of section 15(d) of the Securities Exchange Act of 1934, as amended; and 2. The information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant. Chief Executive Officer Chief Administrative Officer Greenwich Street Series Fund Greenwich Street Series Fund Salomon Brothers Variable Salomon Brothers Variable International Equity Fund International Equity Fund /s/ R. Jay Gerken /s/ Richard Peteka - --------------------------- ------------------------------- R. Jay Gerken Richard Peteka Date: August 28, 2003 Date: August 28, 2003 This certification is being furnished to the Securities and Exchange Commission solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Form N-CSR with the Commission. CERTIFICATIONS PURSUANT TO SECTION 906 EX-99.906CERT CERTIFICATION R. JAY GERKEN, Chief Executive Officer, and RICHARD PETEKA, Chief Financial Officer of Greenwich Street Series Fund - Salomon Brothers Variable Money Market Fund (the "Registrant"), each certify to the best of his or her knowledge that: 1. The Registrant's periodic report on Form N-CSR for the period ended June 30, 2003 (the "Form N-CSR") fully complies with the requirements of section 15(d) of the Securities Exchange Act of 1934, as amended; and 2. The information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant. Chief Executive Officer Chief Administrative Officer Greenwich Street Series Fund Greenwich Street Series Fund Salomon Brothers Variable Salomon Brothers Variable Money Market Fund Money Market Fund /s/ R. Jay Gerken /s/ Richard Peteka - --------------------------- ------------------------------- R. Jay Gerken Richard Peteka Date: August 28, 2003 Date: August 28, 2003 This certification is being furnished to the Securities and Exchange Commission solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Form N-CSR with the Commission.