The Core Bond Fund follows a sustainable investing approach, investing in companies and issuers that the Adviser believes are well positioned to benefit from the transition to a more sustainable global economy, integrating a proprietary issuer resilience (“Issuer Resilience”) (formerly known as “ESG”) analysis that considers governance structures, climate risks, human capital indicators, and controversies (such analysis, “Issuer Resilience Analysis”) into portfolio construction and managing the portfolio within certain risk parameters (e.g., sector and regional exposure) relative to the Fund’s benchmark universe of Bloomberg US Aggregate Bond Index companies.

Under normal market conditions, the Core Bond Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in bonds, which include debt obligations such as mortgage-related securities, securities issued by the United States government or its agencies and instrumentalities, municipal bonds, corporate bonds and high-impact bonds (which provide financing to support solutions to global sustainability challenges) across the spectrum of issuers, each of which is, at the time of purchase, rated at least investment grade (rated BBB- or higher by Standard & Poor’s Ratings Group or Baa3 or higher by Moody’s Investors Service) or unrated and determined by the Adviser to be of comparable quality. The Fund also may have a small allocation of high yield bonds, also commonly known as

“junk bonds” (rated BB+ or lower by Standard & Poor’s Ratings Group or Ba1 or lower by Moody’s Investors Service or unrated and determined by the Adviser to be of comparable quality). Although the Fund is not constrained with respect to duration, it seeks to maintain an average duration within .50 years of the duration of the Bloomberg US Aggregate Bond Index, which had a duration of 5.91 years as of December 31, 2025.

In determining which securities to buy for the Core Bond Fund, the portfolio manager seeks to determine the most attractive asset class and establish if each security’s return is appropriate for its level of risk. In making these determinations, the portfolio manager generally performs a relative value analysis at the asset class level.

The Core Bond Fund may invest up to 45% of its assets in securities of non-US issuers, including emerging market investments.

Under normal market conditions, and as a result of the Adviser’s focus on the risks and opportunities accompanying the transition to a more sustainable economy, the Fund adheres to the Impax Funds’ fossil fuel policy, under which the Fund will not invest in securities of companies that the Adviser determines derive revenues or profits from fossil fuel exploration and production, or derive significant (more than 5%) revenues or profits from fossil fuel refining, processing, storage, transportation and distribution. However, a company that derives significant revenues or profits from fossil fuel refining, processing, storage, transportation and distribution may be included in the Fund’s portfolio if the Adviser determines that such company has credible plans for climate risk mitigation aligned with the transition to net zero.

For additional information on Issuer Resilience criteria, please turn to “Sustainable Investing—Corporate and Issuer Resilience (formerly “ESG”) Criteria” on page 119.