A filing with the U.S. Securities and Exchange Commission has finally offered a way to figure out how many Lumia smartphones Microsoft sold in its last fiscal quarter, from April to June 2016.

Lumia 950

For the past couple of years, Microsoft mentioned just how many Lumia devices it had sold during its regular quarterly financial results. However, it did not offer any specifics on that part of its business when it reported its fourth quarter 2016 fiscal year results last week.

Today's filing with the SEC did give a clue to that number, however:

Phone revenue decreased $4.2 billion or 56%, as we sold 13.8 million Microsoft Lumia ("Lumia") phones and 75.5 million other phones in fiscal year 2016, compared with 36.8 million and 126.8 million sold, respectively, in fiscal year 2015

We know from past reports that Microsoft sold 5.8 million Lumia phones in the first quarter of its 2016 fiscal year, followed by 4.5 million in the second quarter and just 2.3 million in the third quarter. Through simple subtraction, it appears Microsoft sold approximately 1.2 million Lumia phones in its final quarter of its 2016 fiscal year (which is the second quarter of the regular calendar year).

Obviously, that's the lowest quarterly number we have seen yet from that division but it's also not much of a surprise as Microsoft has done little to promote its latest Lumia smartphones with Windows 10 Mobile. That number will likely continue to drop while the company retrenches on the mobile hardware side.