The Ethics Commission's order, released Tuesday, stated that Greene filed "legally insufficient" reports, failing to list all of his sources of income and debts for 2004 to 2006. It said he failed to even file required financial statements with PHA from 2007 to 2009.
The commission said that it had written twice to Greene at his new home near Atlanta asking him to provide the required financial information. But he did not respond, forcing the commission to impose the fine, the order said.
Greene's attorney, Clifford Haines, said in an e-mail that his client would "rectify this situation."
"We suspect that Mr. Greene, like many in the public domain, has not given full attention to the ethics filings alluded to in the report," Haines said. "That failure does not establish any wrongdoing on his part beyond that fact. We intend to rectify this situation and satisfy the board that its fine is not justified."
He did not respond when asked about Greene's new tax lien.
Ethics Commission Chairman John Contino said his agency issues up to 100 similar fines a year for officials who fail to file the necessary reports.
He said the fines are levied only after two notifications are ignored.
Contino said that as many as 1,000 initial notices are issued in a year, "but most people comply" and no fines are levied.
Aside from this week's action against Greene, Contino's commission has been investigating former Mayor John F. Street's role in helping award millions of dollars of PHA legal work to his son's former law firm, according to documents and interviews.
Contino said he could neither confirm nor deny the existence of any investigation.