Steven Spinner, who remains in the top tier of Obama fundraisers, took part in a conference call in recent weeks devoted to planning the event at the W Hotel. He also has joined other Obama fundraising calls, according to a person familiar with Spinner’s participation who spoke on condition of anonymity because he was not authorized to comment publicly.

An Obama campaign official said Sunday that Spinner did not raise funds for the San Francisco event but is an “active fundraiser for the campaign.” He declined to comment on whether Spinner took part in conference calls about the luncheon…

Emails show Spinner pushed for a prompt decision on the Solyndra loan as his wife’s law firm was representing the company. Administration officials said Spinner recused himself from discussions about the loan guarantee and played no role in the decision.