About Us

MyDealBook is the leading online resource for real estate networking, area knowledge and a functional work tool for deal collaboration. The inspiration behind MyDealBook was to create a platform where real estate professionals could:

  • focus their online self-marketing efforts on specific professions and locations
  • build online groups and teams to manage projects, professional associations, investment clubs, and other professional organizations
  • meet at cross-industry networking events and follow up with each other after the events
  • share files and deal information in a secure collaboration environment

The MyDealBook team:


Ryan Slack, CEO

Ryan is the former CEO of PropertyShark where he completed 4 years building the company from zero to 60 employees and millions in revenue. At PropertyShark.com, Ryan developed 8 profitable online subscription services, increased users from 4000 to over 300,000, and increased the geographic footprint from 1 million properties in one city to over 30 million properties in over 15 major cities. Ryan is often sought after for commentary and information relating to the real estate and online professional networking markets and has been featured or quoted in/on the New York Times, New York Magazine, New York Post, New York Newsday, New York Daily News, Property Investor Magazine, Broker/Agent Magazine, LA Times, San Jose Mercury News, Seattle Post-Intelligencer, Miami Herald, Washington Times, Crain's Business, Time Magazine, Businessweek, The Real Deal, Inman News, RIS Media, Wall Street Journal, Forbes, Fortune, Fox Business, ABC, CBS, CNBC, BBC, Curbed, Brownstoner, and many other national and regional press outlets. Ryan has an MBA from Stanford Business School and a BS in Civil Engineering from UC Davis.

Mark Schacknies, VP Product Development, Co-Founder

Mark earned his MBA in Real Estate and Urban Development at George Washington University where he was the Oliver T. Carr Fellow – a biannual fellowship awarded to one MBA student who demonstrates promise in urban real estate. After completing this program he went on to become a Principal at Walnut Street Development where he originated and developed over $300 MM of mixed use projects in the DC Metro area. The concept of MyDealBook was born from Mark’s experiences as a developer, while collaborating with project teams. Prior to real estate, Mark focused on e-finance technology at Dealogic (an investment banking deal collaboration platform), FolioFN (a fractional share brokerage trading platform) and MicroStrategy (data-mining analytic software used by Fortune 500 companies to turn data into intelligence). Mark's experience in both real estate and technology paved the way to develop the concept of MyDealBook as a professional tool to turn the challenges of the commercial real estate sector into opportunities.

Nima Negahban, CTO, Co-Founder

Nima has developed enterprise-scale platforms & leading technologies currently being used in a wide spectrum of market sectors ranging from bio-technology to VoIP Telecommunications. Beyond a cutting-edge technical expertise Nima has a proven track record of leveraging his technical prowess to create compelling business strategies. Lead Web Architect - DigitalSports, Director of Web Media - The Real Deal Magazine , Chief Architect - Equipoise Imaging , Senior Architect - LogicTree , Senior Technology Strategy Advisor - Booz Allen Hamilton. Nima holds a BS in computer science from the University of Maryland.


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