Vermont Sen. Bernie Sanders almost giddily hit Hillary Clinton for giving paid speeches to Wall Street during the Democratic primary, but yet he never filed a personal financial disclosure form of his own.

The non-profit Center for Public Integrity discovered that Sanders, amid a tough primary campaign, asked for an extension twice and then never provided the documents to the Federal Election Commission as his presidential campaign wound down.

Meanwhile both Clinton and Republican nominee Donald Trump filed their forms by the mid-May deadline.

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BUSTED: Sen. Bernie Sanders never filed his personal financial disclosure form to the Federal Election Commission while running for president, the Center for Public Integrity discovered

Sen. Bernie Sanders will eventually release more details about his 2016 finances to the public, as a sitting member of the U.S. Senate - but he didn't as a presidential candidate

Federal candidates, like those running for the White House, are required to file annual reports disclosing their personal finances.

But on April 24, Sanders' lawyer Brad Deutsch wrote the FEC and asked for a 45-day extension beyond the May 15, 2016 deadline to file the forms.

'There is good cause for this extension due to Senator Sanders' current campaign schedule,' Deutsch argued.

The extension was then granted.

Then on June 30, after the Democratic primaries had concluded, but Sanders had yet to drop out, Deutsch wrote the FEC and asked for a second 45-day extension citing Sanders' 'current campaign schedule and officeholder duties.'

That request was also granted.

Now, the Center for Public Integrity confirmed, the Sanders camp doesn't plan to file the forms at all.

'We were told that since the senator no longer is a candidate there was not requirement to file,' Sanders spokesman Michael Briggs told the outlet.

FEC spokesman Christian Hilland verified to the Center for Public Integrity that Sanders hadn't submitted the disclosure form, nor did he need to now, since he was no longer seeking the office.

Sanders' working of the system allowed him to simultaneously bash his opponent for making money off of paid speeches that she booked because of her influence while not letting the public pry into how he was making his own cash.

As a sitting senator, Sanders had already disclosed his 2015 finances to the public, which showed that his main source of wealth came from his wife Jane's mutual funds. Beyond that, he received a small pension from the city of Burlington, Vermont, as the town's former mayor.

Then he held two mortgages, with outstanding debt topping at $1 million.

Sanders stated that he was also in credit card debt between $15,0001 and $50,000, as the documents only ask lawmakers to disclose by range.

The public will eventually get to see what Sanders' finances looked like through 2016, as he'll have to submit a financial disclosure form next year because he remains a member of the U.S. Senate.

But as of now, there's no paper trail indicating whether Sanders 'revolution' put additional money into his personal coffers, or if the campaign made Sanders, generally one of the poorest members of the Senate, even worse off.

One indicator that it might be the former is that Sanders just closed on a third property, a lake front home in North Hero, Vermont.