President Trump has been granted a second 45-day extension to file his personal financial disclosure forms, which will give the American public its only detailed look at the president’s private business interests, according to a letter released by the White House.

The forms are supposed to detail Trump’s income, debt, stock holdings and outstanding loans for 2019. They were originally due May 15, but Trump got an extension until the end of June.

On June 29, Scott Gast, deputy counsel to the president, granted Trump a second extension, until Aug. 13, according to the letter. Federal law allows only two such extensions.

Gast’s letter said that the extension was given for “good cause,” but did not specify what that cause was. A White House spokesperson said Trump “has a complicated report, and he’s been focused on addressing the coronavirus and other matters.”

Trump appears to be the only president since 2001 to need an extension for his financial disclosure filing. Presidents George W. Bush and Barack Obama filed all of theirs on time, according to archived documents.

“Past presidents moved heaven and Earth to release their reports on the May 15 deadline, partly because they wanted to send a message that government ethics matters,” said Walter Shaub, a former head of the Office of Government Ethics, which reviews the financial disclosures.

Shaub resigned his post in July 2017, after criticizing Trump’s approach to ethics rules. A frequent Trump critic on social media, he is now a senior adviser at Citizens for Responsibility and Ethics in Washington, a nonprofit watchdog organization.

Because Trump still owns hundreds of private businesses, even while in office, his financial forms are unusually complicated. His 2019 filing was 88 pages. Obama’s last filing, in 2016, was eight pages.

For the public, Trump’s filings have provided a valuable — and rare — insight into the president’s ongoing partnerships, loans and income streams. Trump still owns the Trump Organization, although he says he has given day-to-day control to his eldest sons.

In 2018, for instance, Trump’s disclosure forms showed he had repaid his former lawyer Michael Cohen more than $100,000 for “expenses” the previous year. That was an apparent reference to Cohen’s payment of $130,000 in hush money to adult-film actress Stormy Daniels — who claimed she had an affair with Trump — just before the 2016 election. Trump had previously said he was unaware of the payments.

Last year, Trump’s disclosure forms showed that his Mar-a-Lago Club in Florida had lost 10 percent of its revenue. That seemed to signal how much Trump’s divisive rhetoric had hurt his bottom line — after his remarks about white-supremacist marchers in Charlottesville caused big-spending clients to pull their galas from the venue.

Trump’s next disclosure forms, whenever they appear, will not contain any data for 2020. So they will not provide new details about how the president’s businesses have been affected by the coronavirus pandemic.

But they should show whether Trump’s businesses rose in 2019, despite the drag caused by the president’s political brand. On June 12, Trump’s son Eric Trump — now the day-to-day leader of his father’s businesses — had promised the news would be good.

The Trump Organization “had one of the BEST years in the HISTORY of the Organization in 2019 . . . (which they will soon see in our upcoming financial disclosures),” Eric Trump wrote on Twitter.

Two weeks after that tweet, President Trump got his second extension to file the documents. Eric Trump declined to comment about the second extension.