Yes, nonprofit corporations are required to make their financial statements available to the public. Form 990 includes a nonprofit’s figures for revenue, expenses, assets, and liabilities, and all 501(c)(3) nonprofits are required to submit Form 990 to the IRS annually. The form also includes the salaries of the directors, officers, and executives of the corporation.
Nonprofits are required to make this information available to the public during normal business hours, with the idea being that nonprofits are created to serve the public interest and therefore should remain transparent for accountability purposes. This information is also made available to the public by the IRS. Finally, websites like GuideStar and Candid.org also make Form 990 information available.