Exhibit 99.906
Certification Pursuant to 18 U.S.C. Section 1350, as Adopted
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
In conjunction with the Annual Report to Shareholders on Form N-CSR of Pacific Funds Series Trust (the “Fund”) for the fiscal year ended March 31, 2018 as filed with the Securities and Exchange Commission (the “Report”), Adrian Griggs as Chief Executive Officer of the Fund and Trevor Smith, as Treasurer (Principal Financial and Accounting Officer) of the Fund, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operation of the Fund.
Date: May 23, 2018
/s/ Adrian Griggs
Adrian Griggs
Chief Executive Officer, Pacific Funds Series Trust
/s/ Trevor Smith
Trevor Smith
Treasurer (Principal Financial and Accounting Officer), Pacific Funds Series Trust