This https://putinism.wordpress.com/2018/03/02/wagner/ is a long article about Wagner (In Russian)
Today, the U.S. Department of the Treasury’s Office of Foreign Assets Control (OFAC) designated five entities and 19 individuals under the Countering America’s Adversaries Through Sanctions Act (CAATSA) as well as Executive Order (E.O.) 13694, “Blocking the Property of Certain Persons Engaging in Significant Malicious Cyber-Enabled Activities,” as amended, and codified pursuant to CAATSA.
“The Administration is confronting and countering malign Russian cyber activity, including their attempted interference in U.S. elections, destructive cyber-attacks, and intrusions targeting critical infrastructure,” said Treasury Secretary Steven T. Mnuchin. “These targeted sanctions are a part of a broader effort to address the ongoing nefarious attacks emanating from Russia. Treasury intends to impose additional CAATSA sanctions, informed by our intelligence community, to hold Russian government officials and oligarchs accountable for their destabilizing activities by severing their access to the U.S. financial system.”
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Yevgeniy Viktorovich Prigozhin (Prigozhin) provided material assistance to the IRA. Specifically, Prigozhin funded the operations of the IRA. OFAC previously designated Prigozhin under E.O. 13661, “Blocking Property of Additional Persons Contributing to the Situation in Ukraine,” on December 20, 2016.
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https://home.treasury.gov/news/press-releases/sm0312
as well as “owner” of the Wagner Group