Management Team

Sherman Hsieh

Founder and CEO

Sherman Hsieh is founder and CEO of Gate58 Marketing. Prior to founding Gate58 Marketing, Sherman was a marketing executive with Siebel Systems. During his nine year tenure he oversaw the web marketing strategy, execution, and operations as well as online lead generation. His group's online lead generation programs delivered over $3 Billion in sales pipeline during Sherman's tenure at Siebel. Sherman was named the Top Lead Generator at Siebel and a member of the Siebel Founder's Circle (highest professional distinction at Siebel). He has also held marketing and engineering positions with Oracle Corporation and Intelsat. Sherman attended UC Berkeley where he studied computer science and economics.

Anthony Castellino

Vice President, Business Development

Anthony Castellino has 15 years of experience in global technology sales, marketing and sales management with publicly traded enterprise software companies. As vice president of business development at Gate58, Anthony is responsible for the company's world-wide sales efforts, strategic planning and customer satisfaction.

A seasoned sales and marketing executive, Anthony spent seven years with Siebel Systems where he ran the company's $500M global maintenance renewals division. As an executive in demand generation, Anthony built and managed the inbound and outbound sales development call centers globally. Generating over a billion dollars in sales pipeline revenue, Anthony was awarded the CEO Circle and President’s Circle awards. Prior to Siebel, Anthony managed Oracle's direct response/lead generation division. Anthony holds a Bachelor of Science Degree in Biology from Colby Sawyer College.

Pamela Swingley

Vice President, Marketing & Publishing

Pamela Swingley is a seasoned marketing executive with more than 24 years of marketing communications experience in the enterprise software market. At Gate58 Marketing she is responsible for the company's worldwide marketing, advertising, and publishing operations. Prior to joining Gate58 Marketing, Pamela founded Savvy Internet Marketing, a search marketing consulting firm.Pamela has held senior management positions in marketing with Siebel Systems, OnLink Technologies, Varsity Logistics and ADP. Pamela received an MBA from Saint Mary's College, and a B.S. degree in Human Development from UC Davis.