The company develops cloud-based software that helps businesses keep track of their information-technology services and manage their costs.

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Bellevue-based Apptio has filed documents to enter the public markets in an initial public offering that could be worth up to $75 million.

An IPO for the cloud-based software company has been the subject of speculation for years, including a report last year that Apptio had made deals with several banks to get ready for the move, which seems to have been planned for a while. Documents made public Friday show Apptio first filed a draft registration in August of 2015.

Apptio has raised at least $136 million from investors since 2007, according to data from CrunchBase. That includes investments from Seattle’s Madrona Venture Group, and Silicon Valley firms Andreessen Horowitz, Greylock Partners and Shasta Ventures. Later rounds added stakes for investment giants T. Rowe Price and Janus.

Apptio was valued at about $900 million after it raised a $45.6 million investment in 2013, according to PitchBook Data.

If Apptio goes public, it would be the second Seattle-area technology firm to do so this year, after a yearlong drought in 2015. Impinj, a Seattle company that develops RFID chips, debuted on the stock market in June. Small biotech PhaseRx also went public earlier this year.

Apptio makes cloud-based software that helps companies keep track of their information-technology services and manage their costs. Its customers include Microsoft, eBay and KeyBank.

The company has reported growing losses in recent years, according to documents filed Friday. It lost $23.7 million in 2013, $32.9 million in 2014 and $41 million in 2015. The losses came as Apptio “focused on growing our business,” it said in a prospectus.

Revenue grew by 75 percent during that span, to $129.3 million in 2015 from $73.8 million in 2013.

That growth might not continue, Apptio warned in its filings.

“We expect that our revenue growth rate will decline over time,” the company wrote.

Hiring enough qualified technical talent is another challenge, the documents indicate, echoing a common refrain from technology companies across the region.

Apptio also faces heavy competition in its market. Tech giants such as VMware offer similar services and, as Apptio points out, bigger companies often can sell those services at cheaper prices to customers they already work with.

But Apptio’s customer count is growing and includes 40 percent of Fortune 100 companies.

Apptio would be one of the first technology companies to go public after a big slowdown in the tech IPO market. The abundance of private funding available to startups began to dry up when nontraditional investors grew concerned that some companies were overvalued.

Apptio’s public move seems to indicate the public markets are warming to new tech entrances, said Greg Beams, a partner at Ernst & Young in Seattle.

“Hopefully what this will mean is that the public investors’ appetite is coming back,” Beams said.

Apptio was founded in 2007 by serial entrepreneur Sunny Gupta, who previously led iConclude and Vigor Technology, and Kurt Shintaffer, who served as chief financial officer at iConclude.

The company has about 700 employees as of June 30, according to the documents.

Apptio has not yet said what it expects the share price to be.