Fruman, 56, pleaded guilty to solicitation of a contribution by a foreign national. He faces up to five years in prison.
His plea didn’t include an agreement to cooperate with the government.
In September 2020, prosecutors filed additional charges that appeared designed to increase pressure on the defendants to cooperate. Fruman and Parnas pleaded not guilty to those charges as well.
Parnas is set to go to trial in October.
The two once had a close working relationship with Giuliani when he was former President Donald Trump’s personal attorney. In 2019, Parnas and Fruman aided Giuliani’s attempt to gather damaging information in Ukraine about then-presidential contender Joe Biden’s son Hunter Biden, who was on the board of the Ukrainian energy company Burisma.
While Parnas and Fruman had touted their proximity to Trump prior to facing federal charges, they have since distanced themselves from his orbit and he has claimed little knowledge of them.
Giuliani has denied wrongdoing.