DocuSign, Inc. is an American company headquartered in San Francisco, California, that allows organizations to manage electronic agreements. As part of the DocuSign Agreement Cloud, DocuSign offers eSignature, a way to sign electronically on different devices. DocuSign has over 1 million customers and hundreds of millions of users in more than 180 countries. Signatures processed by DocuSign are compliant with the US ESIGN Act and the European Union's eIDAS regulation, including EU Advanced and EU, Qualified Signatures. In April 2018, DocuSign filed for an initial public offering. At the time of the IPO, the largest shareholders were venture investment firms Sigma Partners, Ignition Partners, Frazier Technology Ventures, and former CEO Keith Krach was the largest individual shareholder. None of the original founders are major shareholders. The company went public on the NASDAQ on April 27, 2018. History DocuSign was founded in 2003 by Court Lorenzini, Tom Gonser, and Eric Ranft. Tom Gonser came up with the idea when he was at NetUpdate, a company he founded in 1998, and where he served as CEO. Through its history, NetUpdate had acquired several companies, including an e-signature start-up in Seattle called DocuTouch that had been funded by Timberline Venture Partners, Bill Kallman and Jeff Tung with $4M. Timberline invested another $1 M in the merger into Netupdate. DocuTouch held patents on Web-based digital signatures and collaboration. With internal support from Gonser, Lorenzini negotiated the purchase of certain DocuTouch assets from NetUpdate and started DocuSign. Gonser then left the NetUpdate Board to focus on DocuSign full-time. The firm began sales in 2005 when zipForm, now zipLogix, integrated DocuSign into its virtual real estate forms. Mock trials featuring licensed attorneys and real judges highlighted the admissibility of DocuSign contracts in court based on encrypted audit logs of signature events, as well as the impossibility of changing contracts. In January 2007, Court Lorenzini stepped down as CEO and Chairman of the Board and took on the role of Executive Vice President of Business Development. He was replaced as CEO by Matthew Schiltz, who served in that role until January 2010. Steven King replaced Schultz as CEO and moved the corporate headquarters from Seattle to San Francisco. Keith Krach became DocuSign's chairman of the board in January 2010 and its CEO in August 2011. In June 2010, DocuSign added support for iPhone, iPad and phone-based user authentication. DocuSign also began referring to its service as “eSignature