Sheldon Adelson, the casino mogul and staunch GOP donor, contributed $5 million to support President Trump’s inauguration, according to a Tuesday Federal Election Commission filing.

Adelson’s contribution is the highest donation contribution ever given for a president’s inaugural ceremony, according to The New York Times.

Other close allies to the president also provided substantial donations, including the New England Patriots' Robert Kraft, who donated $1 million, and Blackstone CEO Steve Schwarzman, who donated $250,000, the FEC filing shows.

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Trump’s longtime friend Tom Barrack headed the inaugural committee, which raised a record $107 million for the ceremony, almost twice as much as former President Barack Obama Barack Hussein ObamaThe Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon Trump appointees stymie recommendations to boost minority voting: report Obama's first presidential memoir, 'A Promised Land,' set for November release MORE raised for his first inauguration in 2009.

Major corporations also donated large sums of money for the event.

Previous inaugurations capped an individual's contribution at $250,000.

The organizers said they plan to donate the leftover funds to charity, although no further specifics have been provided.