Rick R. Heitzmann

Proletariat, Inc. is a holding company, which engages in the development of computer games. The company was founded by Seth Sivak, William Daniel Ogles, Jesse Kurlancheek, Joe Mukai, and Damon Iannuzzelli in 2012 and is headquartered in Boston, MA.

Knozen, Inc. provides internet related services. It creates the personality platform for the internet a personality model and API that will create and enable an entire class of human-understanding technologies. The firm applies hard computer science to the soft stuff of personality in order to discover, explore, and display the world's personalities. The company was founded by Marc Cenedella and Thibault Le Conte in 2013 and is headquartered in New York, NY.

Unidad Editorial SA publishes newspapers and magazines. It publishes the second-largest national newspaper of Spain, El Mundo. It also publishes books through its unit, La Esfera de Los Libros, besides providing digital radio, television and online newspaper services. The company has partnered with Nortel to make 'El Mundo' content available over wireless devices. Unidad Editorial was founded in 1989 and is located in Madrid, Spain.

Orchard Technologies, Inc. simplifies the process of buying a new home with their Move First and Offer Boost real estate services. The company is based in New York, NY and was founded by Courtland B. Cunningham, Phil DeGisi, and Court Cunningham, with Courtland B. Cunningham, Courtland B. Cunningham, and Court Cunningham serving as CEOs since incorporation. These services allow customers to purchase a new home with cash offers before selling their old ones, making the process simple and stress-free.

FirstMark Capital LLC (FirstMark Capital) is venture capital firm founded by Rick Heitzmann and Amish Jani in 1996. The firm is headquartered in New York.

Emergent Payments, Inc. provides online payment services. The company was founded by Brent de Jong, Mitchell Davis and Andrew Schneider in 2007 and is headquartered in Santa Clara, CA.

Riot Games, Inc. develops and publishes video games. It offers competitive, PvP multiplayer online battle arena, and online games. The company was founded by Brandon Beck and Marc Merrill in 2006 and is headquartered in Los Angeles, CA.

Tapad, Inc. provides mobile advertising network services. The firm offers The device graph which allow marketers to understand, monetize, and measure their audience in a unified way across all connected devices. It also provides advertising solutions, creative showcase, data solutions, programmatic advertising, and cross-device attribution. The company was founded by Dag Liodden and Are H. Traasdahl in 2010 and is headquartered in New York, NY.

Turiya Media, Inc. provided predictive analytics to the social gaming industry. The company was founded by Chethan Ramachandran, John Cheng and Dick Tsur in 2009 and was headquartered in San Francisco, CA.

Dashlane, Inc. engages in the provision of password manager and digital wallet applications. It offers form auto fill, password generator, and password changer. The company was founded by Bernard Liautaud, Alexis Fogel, Jean Guillou, and Guillaume Maron in 2009 and is headquartered in New York, NY.

DraftKings, Inc. provides online daily and weekly fantasy sports contests for cash prizes. The firm's games are structured under salary cap format and new contests are offered every day with instantaneous payouts. Its sports competitions are held across baseball, football, basketball, and hockey. The company was founded by Jason Robins, Paul Liberman, and Matthew Kalish in 2011 and is headquartered in Boston, MA.

HopSkipDrive, Inc. engages in the provision of ridesharing services for students. The company was founded by Carolyn Yashari Becher, Janelle McGlothlin, and Joanna McFarland on November 16, 2014 and is headquartered in Los Angeles, CA.

Roman Health Ventures, Inc. engages in the provision and development of technology platform for the healthcare industry. Its product enables customers to connect with a doctor and get treatment when and where they need it. The company was founded by Zachariah Reitano, Saman Rahmanian, and Robert Schutz in 2017 and is headquartered in New York, NY.

ReWoven, Inc. engages in the provision of disposable underwear that offers leak-free protection. Its product provides modern fit, ultra absorbent, and fresh and clean protection. The company was founded by William Herlands and is headquartered in New York, NY.

FirstMark Horizon Acquisition Corp. operates as a blank check company. Its business purpose is to effect a merger, capital stock exchange, asset acquisition, stock purchase, and reorganization. The company was founded on August 13, 2020 and is headquartered in New York, NY.

FirstMark Acquisition Corp. II operates as a blank check company. The company was founded on February 8, 2021 and is headquartered in New York, NY.

FirstMark Acquisition Corp. III is a blank check company formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses. The company was founded in February 18, 2021 and is headquartered in New York, NY.

Omaze, Inc. engages in operation of an online fundraising platform to raise money and awareness for causes. It provides cars, entertainment, and travels. The company was founded by Matt Pohlson and Ryan Cummins in 2012 and is headquartered in Culver City, CA.