Matt Blumberg

CEO

2025

Markup AI is the world’s first provider of Content Guardian Agents, API-first solutions that blend AI with deterministic rules that allow companies to instantly scan, score, and rewrite their content at scale against their brand and policy standards. This is the future of AI content. Come grab an AI key and free trial and see our Writer’s Playground and developer recipes at www.markup.ai.

Co-Founder, Chairman

2020

Along with seven of my colleagues from Return Path, I started Bolster as a next-generation AI-driven platform to disrupt the executive search market: - Raised $25mm in venture capital from top-tier investors including Union Square Ventures, Foundry, Costanoa Venture Capital, High Alpha, and SVB - Pivoted from initial marketplace model to AI-copilot model for recruiters - Innovated pricing and service models - Have placed 400+ senior executives in full-time, part-time, and board roles

Chief Executive Officer

2020 - 2024

Board of Directors (Chairman, member of Audit Committee and Nom/Gov Committee)

2021 - 2023

Founder, CEO, Chairman

1999 - 2019

Understanding the disruptive power of email technology along with a number of its limitations from my work at MovieFone, I founded Return Path in 1999 and scaled the business as CEO for 20 years to over $100mm in revenue, profitable, with 500 employees in 12 locations across 7 countries. - Ran business through the ups and downs of the dot-com bubble and collapse, 9/11, 2008 global financial crisis; sold company for $250mm in 2019 - Created groundbreaking email SaaS products with numerous patents based on a proprietary data moat with millions of nodes reporting email metrics from across the internet. Products included change of address, filter monitoring, certification, anti-phishing, and consumer insights - Raised over $100mm in venture capital from top-tier investors including Flatiron Partners/Union Square Ventures, Softbank VC/Foundry, Sutter Hill Ventures/Costanoa Venture Capital, Sapphire, Vista - Scaled and led complex organization across multiple business units and geographies; created and drove extensive management and leadership training programs; won numerous employer-of-choice awards; 12+ former employees have gone on to become CEOs - Acquired a dozen companies over the years, from competitive consolidation to technology tuck-in; completed four spin-outs/divestitures of non-core assets in a rapidly evolving space, including one business unit still intact today within Proofpoint that has scaled to almost $500mm in revenue

Board of Directors

2014 - 2018

Board of Directors (2 years as Chair)

2009 - 2015

Chairman

2004 - 2009

Board of Directors

2006 - 2007

General Manager, VP Marketing/Product

1995 - 1999

MovieFone was a $30mm small cap public company with 175 employees, pioneering interactive movie guides and ticketing services through local phone numbers (e.g. 777-FILM) and on the Internet at moviefone.com. I was hired to put the company’s services on the Internet. By 1999, at least 150 million consumers used our services. - Built and led MovieFone’s Internet business from concept, through five product cycles, as a top-25 property at the dawn of the commercial Internet - Introduced disruptive new products and developed new revenue streams including voice recognition, reserved seating, market research, and email - Had P&L responsibility at division level; managed staff of 30; also had company-wide functional leadership roles running Marketing and Product - Reported to CEO; on deal team which sold company to AOL for $585 mm

Associate

1994 - 1995