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MediaMath, which offers tools for ad-buying, data management, and other aspects of digital marketing, announced today that it has raised more than $175 million in additional funding, including a $73.5 million Series C and a $105 million debt facility.

That’s a pretty big step up from the $14 million Series B that MediaMath raised in 2011. The new equity funding was led by Spring Lake Equity Partners, with participation from Akamai Technologies, Safeguard Scientifics, Catalyst Investors, and Observatory Capital.

“We have been looking to back a leader in the digital marketing space for quite some time,” said Spring Lake partner Dan MacKeigan in the funding release. “MediaMath’s leading industry position, buoyed by their remarkable triple-digit year-over-year growth and best-in-class marketing platform, presented us with an opportunity that we could not pass up.”