Meet Invoca

We are big brains and small egos creating amazing technology and making our customers successful.




Gregg Johnson


Gregg is a seasoned digital marketing and SaaS leader, with over fifteen years of extensive experience bringing products to market in emerging categories, leading large teams, and working with the world’s best enterprise brands. Most recently, Gregg led Salesforce Marketing Cloud’s social marketing product line, where he integrated $1 billion of M&A investments into the Salesforce product portfolio. Prior to that he drove product strategy and development for Salesforce Chatter, helping define the nascent category of enterprise social networking and rolling out one of Salesforce's most successful products. Earlier in his career, Gregg was a consultant at Boston Consulting Group and worked in sales, marketing and product roles at several startups. He graduated from Stanford University and holds a Master’s degree from Johns Hopkins School of Advanced International Studies and an MBA from the Wharton School of Business.

Colin Kelley


Prior to founding Invoca and RingRevenue, Colin was the Chief Technology Officer at CallWave, Inc. from 2000 to 2008 where he architected the company’s voice services platform to scale to over 10 million free and paid users. From 1989 – 1999, Colin was staff scientist and lead software architect at Unisys/Pulsepoint Communications, a supplier of highly scalable and reliable voicemail systems to major carriers and corporations such as Pacific Bell, Verizon, Motorola and 3M. Colin earned his BS degree in Electrical Engineering and Computer Science from Villanova University. While there he founded and co-wrote Gnuplot, an open source data visualization tool distributed with the Gnu project that remains widely in use today at universities and research organizations worldwide.

Dave Coburn

SVP Strategy, Operations & Business Development

Dave is a proven product leader with a passion for bringing innovative technology solutions to small business and Fortune 500 customers. He combines 10 years of experience at Microsoft, leading product and technology teams to develop new online services, with more recent experience leading agile development of online RTB advertising exchanges for direct advertisers and agencies at AdECN and MediaTrust. Dave received a bachelor’s degree in Political Science from the University of California, Berkeley and earned his MBA in Finance and Entrepreneurship from University of Washington, Michael G Foster School of Business.

Julia Stead

VP, Marketing

Julia has over a decade of experience driving digital marketing and revenue growth at B2B SaaS companies. During her tenure at Invoca she has been an industry leader of account-based marketing strategy, being named a Top 40 Demand Marketing Game Changer and ABM Superhero. Prior to joining Invoca, she was the Director of Sales and Marketing at IPfolio, a global IP management software platform, where she was responsible for leading the company’s official launch and securing their first enterprise customers. Julia holds an MBA from the University of Montreal and a BA in English from McGill University.

Nathan Ziv

VP, Product Management

Nathan has over 10 years of experience managing enterprise product development for marketing and advertising technology software companies. Prior to joining Invoca, Nathan was Director of Product Management at Adconion Direct, acquired by Amobee / Singapore Telecom in 2014. As an original member of the product team, Nathan helped Adconion Direct grow into a top 10 global advertising network serving Fortune 500 companies in 20+ countries. Nathan earned his BA from Boston College.

Chris Schulz

SVP, Customer Success

Chris has been recognized as a customer advocate in the enterprise software industry for more than 15 years. His teams have enabled SME and global enterprise customers to successfully deliver key transformational and operational initiatives in different industries. Chris has held various executive and management roles in customer success, professional services and support, as well as corporate development at start-up, private and public software companies. Most recently Chris was the VP of global support and transformation at E2open (EOPN). At Invoca, Chris is responsible for all stages of the customer lifecycle, from business advisory to deployment, support, and customer experience. Chris earned a BS and MS in chemical engineering from the Karlsruhe Institute of Technology (KIT) in Karlsruhe, Germany.

Scott Herriman

SVP, Engineering

Scott’s career expertise is in consumer-focused telephony solutions. Prior to joining Invoca and RingRevenue, Scott was Technical Manager of the client team at CallWave, Inc. Early in his tenure at CallWave, Scott was responsible for developing key portions of the telephony service platform. As manager of CallWave’s client team, Scott’s group developed the real-time telephony application installed on millions of Windows desktops. Scott earned his BS degree in Computer Science with a minor in Geology from the University of California at Santa Barbara.

Ben Sullivan

SVP, Sales

Ben is an enterprise sales veteran with over 20 years of experience building and managing sales organizations at high-growth SaaS companies. Prior to Invoca, Ben was the VP of worldwide sales at ON24, where he led and scaled the global sales organization and drove over 70% subscription revenue growth. Prior to that, Ben also served as VP of strategic alliances and business development at ON24. Ben has held various sales and management roles in voice telephony, unified SaaS communications and enterprise SaaS companies including Genesys, Winstar Communications and Verizon. Ben holds a BA in sociology and mass communication and marketing from Saint Anselm College.

Denise Kale

VP, Legal

Denise has been practicing law for over 25 years, the last 20 of which have been with high technology companies. Her experience ranges from mid-stage private companies to large enterprises, often being the first legal resource in the company. She consistently builds proactive and highly responsive legal teams while implementing scalable processes, efficiency and strong cross-departmental relationships. Denise is expert in technology licensing, employer-side employment law, and comprehensive risk analysis and assessment. Prior to Invoca, Denise had leadership positions with (now LinkedIn), Citrix Systems and Openwave Systems. Prior to joining the tech sector, Denise practiced municipal law and insurance defense litigation.

Michael Myhre

VP, Controller

Michael has over 25 years of experience leading accounting and finance teams in multiple high technology companies. His experience ranges from private, early stage companies to mid-market and large enterprises, where he has consistently implemented process and procedural improvements, increasing the efficiency of his teams as well teams throughout those organizations. Prior to joining Invoca, Michael held senior leadership roles with Cepheid, Packeteer and Symantec. Michael began his career in public accounting, including time at both local and international accounting firms. He holds a BS in Accounting from Santa Clara University, is a Certified Public Accountant and belongs to the American Institute of Certified Public Accountants and the California Society of CPAs.

Board Members

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