# AppNexus funding: rounds and investors > AppNexus has raised $404M across 9 rounds since 2007. Investors include First Round Capital, Venrock and Khosla Ventures. Every round with its source. Source: https://millionrounds.com/company/appnexus (Millionrounds; every figure on the page links to its filing or article) United States · [Funded startup](https://millionrounds.com/companies) # Who invested in *AppNexus* 9 rounds we have observed, with the 15 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Martech Funding summary Updated 26 Oct 2026 **$404M** raised across 9 rounds since 2007, from 9 sources **$2.5M** Seed **$8.0M** Series B **$5.0M** Series B **$50M** Series C **$75M** Series D **$60M** Series E **$110M** Series E **$63M** Series F **$31M** Round - **Latest round:** Round, $31M Sept 2016 - **Biggest round:** $110M Series E · Sept 2014 - **Investors:** 15 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2009 2011 2013 2015 **$2.5M** Seed **$8.0M** Series B **$5.0M** Series B **$50M** Series C **$75M** Series D **$60M** Series E **$110M** Series E **$31M** Round - **First round:** Seed, $2.5M - **Biggest round:** $110M - **Usual gap between rounds:** 14 months [**AppNexus** Marketing 1 /? Their pitch deck **AppNexus's pitch deck** Each slide read for what it argues, against the decks that raised at the same stage.](https://millionrounds.com/decks/appnexus) ## The rounds - **Sept 2016** Round **$31M** *2 new* [News Corp.](https://millionrounds.com/fund/news-corp) [Yahoo! Japan](https://millionrounds.com/fund/yahoo-japan) Reported by Businessinsider - **Apr 2015** Series F **$63M** No investor was named in the report. From a historical funding record SEC filing: $63M sold, first sale Apr 2015 - **Sept 2014** Series E **$110M** *1 new* [WPP](https://millionrounds.com/fund/wpp) From a historical funding record SEC filing: $60M sold, first sale Aug 2014 - **Aug 2014** Series E **$60M** No investor was named in the report. From a historical funding record SEC filing: $60M sold, first sale Aug 2014 - **Jan 2013** Series D **$75M** *2 new* *1 returning* [Venrock](https://millionrounds.com/fund/venrock) [TCV](https://millionrounds.com/fund/tcv) [Tribeca Venture Partners](https://millionrounds.com/fund/tribeca-venture-partners) Reported by techcrunch.com SEC filing: $72M sold, first sale Jan 2013 - **Oct 2010** Series C **$50M** *1 new* *2 returning* [First Round Capital](https://millionrounds.com/fund/first-round-capital) [Venrock](https://millionrounds.com/fund/venrock) [Microsoft](https://millionrounds.com/fund/microsoft) Reported by techcrunch.com - **Nov 2009** Series B **$5.0M** *3 returning* [First Round Capital](https://millionrounds.com/fund/first-round-capital) [Venrock](https://millionrounds.com/fund/venrock) [Kodiak Venture Partners](https://millionrounds.com/fund/kodiak-venture-partners) Reported by finsmes.com - **Sept 2008** Series B **$8.0M** *2 new* *2 returning* [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) [First Round Capital](https://millionrounds.com/fund/first-round-capital) [Venrock](https://millionrounds.com/fund/venrock) [Kodiak Venture Partners](https://millionrounds.com/fund/kodiak-venture-partners) Reported by pehub.com - **Dec 2007** Seed **$2.5M** *7 new* [SV Angel](https://millionrounds.com/fund/sv-angel) [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) [First Round Capital](https://millionrounds.com/fund/first-round-capital) [Ron Conway](https://millionrounds.com/fund/ron-conway) [Marc Andreessen](https://millionrounds.com/fund/marc-andreessen) [Ben Horowitz](https://millionrounds.com/fund/ben-horowitz) [Coriolis Ventures](https://millionrounds.com/fund/coriolis-ventures) From a historical funding record ## Founders and team From the SEC filings it signed: 4 on the team. - **Brian O'Kelley** Executive Officer, Director, Promoter i - **Jonathan Hsu** Executive Officer i - **Michael Rubenstein** Executive Officer, Director i - **Nithya Das** Executive Officer i On the board, as filed i *Brian Lesser* *Chip Meakem* *David O'Hara* *David Yuan* *Edwin Gillis* *Elisabeth DeMarse* *Michael Tyrrell* ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Series B** 2008 **Series B** 2009 **Series C** 2010 **Series D** 2013 **Series E** 2014 **Series E** 2014 **Series F** 2015 **Round** 2016 [First Round Capital](https://millionrounds.com/fund/first-round-capital) [Venrock](https://millionrounds.com/fund/venrock) [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) [Kodiak Venture Partners](https://millionrounds.com/fund/kodiak-venture-partners) [SV Angel](https://millionrounds.com/fund/sv-angel) [TCV](https://millionrounds.com/fund/tcv) [Ron Conway](https://millionrounds.com/fund/ron-conway) [Tribeca Venture Partners](https://millionrounds.com/fund/tribeca-venture-partners) [Microsoft](https://millionrounds.com/fund/microsoft) [Marc Andreessen](https://millionrounds.com/fund/marc-andreessen) ## Everyone who backed them [First Round Capital](https://millionrounds.com/fund/first-round-capital) VC firm **4** rounds [Venrock](https://millionrounds.com/fund/venrock) VC firm **4** rounds [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) VC firm **2** rounds [Kodiak Venture Partners](https://millionrounds.com/fund/kodiak-venture-partners) VC firm **2** rounds [SV Angel](https://millionrounds.com/fund/sv-angel) VC firm **1** round [TCV](https://millionrounds.com/fund/tcv) Private equity **1** round [Ron Conway](https://millionrounds.com/fund/ron-conway) Angel **1** round [Tribeca Venture Partners](https://millionrounds.com/fund/tribeca-venture-partners) VC firm **1** round [Microsoft](https://millionrounds.com/fund/microsoft) Corporate VC **1** round [Marc Andreessen](https://millionrounds.com/fund/marc-andreessen) Angel **1** round [WPP](https://millionrounds.com/fund/wpp) Growth equity **1** round [News Corp.](https://millionrounds.com/fund/news-corp) Growth equity **1** round [Ben Horowitz](https://millionrounds.com/fund/ben-horowitz) VC firm **1** round [Coriolis Ventures](https://millionrounds.com/fund/coriolis-ventures) VC firm **1** round [Yahoo! Japan](https://millionrounds.com/fund/yahoo-japan) Corporate VC **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=appnexus). ## Quick answers about AppNexus ### Who invested in AppNexus? AppNexus's investors include First Round Capital, Venrock, Khosla Ventures, Kodiak Venture Partners and SV Angel, and 10 more on record. ### How much has AppNexus raised? AppNexus has raised $404M across 9 rounds since 2007. ### When did AppNexus last raise? AppNexus's most recent round was an Undisclosed round of $31M in Sept 2016. ### What was AppNexus's biggest round? AppNexus's largest round on record is $110M (Series E), in Sept 2014. ### Who backed AppNexus first? AppNexus's first round on record, in Dec 2007, was backed by SV Angel, Khosla Ventures and First Round Capital and 4 others. ### What stage is AppNexus at? AppNexus's latest named round is an Undisclosed round, in Sept 2016. ### Where is AppNexus based? AppNexus is based in the United States. ## Companies like AppNexus In the same sector, and raised in the last eighteen months. [**Gradient** $24M · Oct 2026](https://millionrounds.com/company/gradient)[**Different** $48M · Oct 2026](https://millionrounds.com/company/different)[**OuterSignal** $22M · Sept 2026](https://millionrounds.com/company/outersignal)[**Pipedrive** $90M · Sept 2026](https://millionrounds.com/company/pipedrive)[**Clay** $263M · Sept 2026](https://millionrounds.com/company/clay)[**Blee** $21M · Sept 2026](https://millionrounds.com/company/blee) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app