Inkling, a US-based interactive digital book publisher, has raised $16m series C funds, according to a regulatory filing. Investors have not been disclosed yet, but investors in previous rounds include UK-based publisher Pearson and US-based publisher McGraw-Hill, and so far Inkling has raised at least $32m.
Previously, Inkling raised $17m in a series B round announced in August 2011, led by venture capital firm Tenaya Capital and supported by Pearson Education (a unit of Pearson), Jafco Ventures and Sequoia Capital, In March 2011, Inkling said it had raised undisclosed funds from Pearson and McGraw-Hill. In August 2010, a year after its launch in 2009, Inkling raised its series A round from venture capital firms Sequoia Capital, Kapor Capital, Felicis Ventures and Sherpalo Ventures – the amount was undisclosed.