It's by far the super PAC's most involved fundraising month. And it came as Romney struggled to compete on the airwaves with President Obama's reelection campaign.
It was reported earlier this week that, because of a lack of primary funds, Romney had to take out a $20 million loan. In the meantime, it appears Restore Our Future and other Republican-aligned outside groups teamed up to keep the GOP side competitive in the ad wars.
Candidates are not allowed to use money raised for the general election until they officially accept their party's nomination.
August financial reports are due by midnight Thursday. The Romney and Obama campaigns have yet to file their reports.