The Securities and Exchange Commission said Monday it plans next month to finalize controversial rules requiring companies to disclose payments they make to foreign governments and whether their items contain "conflict materials" from war-torn nations in Africa.

In an open-meeting statement posted on its website, the SEC said the commission will consider on Aug. 22 whether to adopt rules on the long-delayed proposals, both of which come from provisions in the Dodd-Frank Act that were statutorily required to be finished last...