David Hassell

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David Hassell

David Hassell is an American businessperson.[1] He is the founder and CEO of 15Five, an employee feedback system.[2][3]


In 1999, he co-founded AdClip Networks, an online advertising technology company aimed at creating alternatives to the predominant banner ads of the day, starting with online coupons that could be “clipped” off a web page.[4] It was later re-branded as Endai Worldwide and focused more broadly on a variety of online marketing technologies and services.[5]

An avid kitesurfer, Hassell attends an annual gathering of Silicon Valley CEOs and other tech-world entrepreneurs on Maui called MaiTai.[6]

In 2010, Hassell co-founded Strategy Day with former President of the San Francisco chapter of Entrepreneurs' Organization, Rob Wensing, a consulting company that works with CEOs and executive teams to develop focus and accomplish strategic plans.[7] At the same time, Hassell began work on a similar idea for facilitating communication within companies. This idea, 15Five, was launched in 2011.[8]


The idea for 15Five originated with Patagonia founder Yvon Chouinard, who implemented a weekly "5-15 report" to keep track of his employees and business while he enjoyed his adventurous life.[9][10] The idea behind 15Five is employees spend "15 minutes to write the reports and managers spend no more than 5 minutes to read them."[11][12] The goal of the company is to provide fast and easy communication between managers and employees using an interface that Hassell says is based on the design value of "elegant simplicity."[13][14]

In 2013, 15Five received $1 million in seed funding from venture capital firm Richmond Global, 500 Startups, and investments from individuals, including Yammer founder David O. Sacks, Ustream founder John Ham, former editor of Mashable Ben Parr, Ben Ling of Google and Xobni founder Matt Brezina.[3][11][15]


Hassell has served as the President of the San Francisco chapter of Entrepreneurs' Organization, a global non-profit with the stated goal of helping entrepreneurs learn and grow.[16] Inc., and VentureBeat.[1][8][12][17]


  1. ^ a b "Jessica Simon, David Hassell". New York Times. June 11, 2006.
  2. ^ Ha, Anthony (August 16, 2012). "15Five Helps CEOs Stay In The Loop, Leaves Beta Testing". TechCrunch.
  3. ^ a b Brown, Stephen E. F. (January 15, 2013). "15Five raises $1 million in seed funding". San Francisco Business Times.
  4. ^ Bochnak, Robert. "Technological neophyte finds his niche in computer engineering". Tufts Journal.
  5. ^ "Endai Worldwide Profile". Inc.
  6. ^ Way, Hermione (May 23, 2012). "Is MaiTai the beginnings of a new TED?". TheNextWeb.
  7. ^ Novellino, Teresa (January 15, 2013). "What we've got here is ability to communicate; Check 15Five". Upstart.
  8. ^ a b Sprouter (December 3, 2012). "HelloFax, Contently, 15Five, 42Floors". Financial Post.
  9. ^ Carney, Michael (January 15, 2013). "15Five raises $1M for a management tool inspired by Patagonia's founder". PandoDaily.[permanent dead link]
  10. ^ "'i'm Sorry, Yvon's Out Surfing'". Inc.
  11. ^ a b Lunden, Ingrid (January 15, 2013). "15Five Wants Employees To Have A Voice, Raises $1M From Yammer's David Sacks, 500 Startups, Ben Parr And More To Give It". TechCrunch.[permanent dead link]
  12. ^ a b McCorvey, JJ (May 29, 2012). "Must Have: 15Five, Best Way to Keep Track of Employees". Inc.[permanent dead link]
  13. ^ Grant, Rebecca (January 15, 2013). "15Five's feedback platform helps execs work hard, play harder". VentureBeat.[permanent dead link]
  14. ^ Steinberg, Scott (March 22, 2012). "5 New Apps & Tech Tools to Try". Yahoo.
  15. ^ Bury, Erin (January 15, 2013). "15Five Adds $1M from Yammer, Xobni Founders for Weekly Status Update Tool". BetaKit.[permanent dead link]
  16. ^ Setty, Rajesh (April 28, 2008). "EO and Peer Networking – An interview with David Hassell; May 8 event". RajeshSetty.com.[permanent dead link]
  17. ^ Mitroff, Sarah (March 8, 2012). "Two new tools make sure your employees' opinions are heard". VentureBeat.[permanent dead link]

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