The organization must list all of its current officers, directors, and trustees, as those terms are defined in the Glossary contained in the instructions. Investments – Other Securities.Let's see a complete instruction guide on how to fill out Form 990. If the organization's answer to any of the following questions is "Yes," then complete Schedule D, Parts VI,. VII, VIII, IX, or X as applicable. Complete if the organization is a section 501(c)(3) organization or a section 4947(a)(1) nonexempt charitable trust. Attach to Form 990 or Form 990-EZ. Complete if the organization is a section 501 (c)(3) organization or a section. 4947(a)(1) nonexempt charitable trust. Complete if the organization is a section 501(c)(3) organization or a section.