Holding Russia Accountable for Malign Activities Act of 2021 This bill directs the President to impose visa- and asset-blocking sanctions on any current or former official of Russia's government involved in the August 20, 2020, poisoning of Russian opposition leader Alexei Navalny or the subsequent cover-up of the poisoning. An individual or entity that violates, attempts to violate, conspires to violate, or causes a violation of such sanctions shall be subject to civil and criminal penalties. In addition, the President shall report to Congress on the personal wealth of Russian President Vladimir Putin and his family members. The Department of State shall report to Congress on the circumstances of the February 27, 2015, assassination of Russian opposition leader Boris Nemtsov.