Most people on this site are here because they wrote a book, ran a study, or built something that changed how managers work. Sparks is here because he publishes the site [9], and because a few of the tools on it are his own. That is a different kind of entry and should be read as one.
Sparks has started three companies in about a decade and raised more than $20 million across them. The first, LaunchGram, founded November 2011 [11], was acquired in 2013 by Referly, a Y Combinator startup run by Danielle Morrill [1]; Referly then pivoted into Mattermark [2], which Sparks co-founded in May 2013 and served as COO [11]. Mattermark raised more than $17 million from Andreessen Horowitz, NEA, and others [3], and Harvard Business School published a case on it [4]. He left in October 2016 [5][11]; fourteen months later the company sold to FullContact, and common stockholders received nothing [3]. He then co-founded Holloway in November 2016 [11], raised $4.6 million from NEA, South Park Commons, Comcast Ventures and The New York Times [6], published two books and signed eight more authors, and handed the CEO seat to his co-founder Josh Levy in September 2020 [7][11].
That record establishes less than it might appear to. None of the three companies became large or enduring [3], and Sparks has never run an organization past the scale where a founder can still know everyone’s name. He holds no doctorate and has published no research of his own. A reader who wants someone who managed at scale, or who can point to the papers, should look elsewhere on this site: to Grove, or to the researchers whose findings Management Craft cites.
What he has instead is unusual in a different way. Since September 2020 he has coached founders and CEOs full time [12], earning an Executive Coaching Certification from the Hudson Institute of Coaching the following year [12]: 15 to 20 clients at a time, more than 60 founders and over 1,800 hours to date [10]. That is a large sample of one specific passage seen from the inside: the founder who has to become a manager, the company crossing from one person to a hundred. He has also made the mistakes himself, having hired and mis-hired executives and worked through a co-founder split [10]. Having watched that passage go wrong in sixty different ways is a different qualification from having gotten it right, and it is the more useful one for recognizing which failure a given company is currently having.
The throughline is editorial, and it starts before Management Craft. Mattermark built The Mattermark Daily, a newsletter that passed 100,000 subscribers, and Sparks wrote it for a stretch. Holloway’s whole business was turning what experts knew into structured, referenceable guides; he authored one of them [8]. Management Craft is that same craft pointed at management: read the literature, test it against the coaching practice, publish what survives, and attach the receipts. So his word carries weight on the founder-to-manager transition, on which ideas from the literature hold up inside a small company, and on the texture of scaling from one to one hundred, the terrain behind The Terrain Test and The Competency Stack. It carries none on empirical findings, which is why Management Craft cites researchers rather than him, and none on managing at enterprise scale, which he has not done.