Why are index ventures not listed as a shareholder on Dropbox’s S-1, even though they lead their series B and advertise themselves as Dropbox investors on their website? by Jason Lemkin | Fundraising, Leadership, Q&A, Scale Because only investors that own > 5% are required to be listed per SEC regulations. It looks like they own just a bit less than that. View original question on quora Related Posts Why is Dropbox valued so high given that Google Drive is such a strong competitor? Who uses Dropbox anyway? Does Dropbox have any USP that makes them so valuable? Why didn't Dropbox try to sell Mailbox? As of August 2016, is Dropbox dying?