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An Experienced Leadership Team

Ashish Gupta

Chief Executive Officer

Casey Ellis

Chairman, Founder, and CTO

David Castignola

Chief Revenue Officer

Sammie Walker

Chief Marketing Officer

Dave Gerry

Chief Operating Officer

Mark Milani

Global Head of Product and Engineering

Nicholas McKenzie

Chief Information and Security Officer

Cecilia Parisi

Vice President of People and Places

Grant McCracken

Vice President of Operations

Chris Nadan

VP and General Counsel

Ashish Gupta

Chief Executive Officer

Ashish brings more than 25 years of general management experience and has had leadership roles in marketing, sales, business development, and products. Prior to Bugcrowd, Ashish was Infoblox’s EVP and Chief Marketing Officer responsible for worldwide strategy and operations for global corporate and product marketing at Infoblox, including brand awareness, go-to-market programs, and demand generation initiatives.

Ashish specializes in creating new markets and categories, positioning companies for growth, and developing differentiated business strategies in highly competitive industries. He has held leadership positions with other venture-backed and publicly traded technology companies including Microsoft, Telera (acquired by Alcatel/Genesys), Vidyo, Deloitte Consulting, and Hewlett-Packard. Ashish lives in the Bay Area and spends most of his weekends with his family playing soccer, skiing, or sailing.

Casey Ellis

Chairman, Founder, and CTO

Casey is the Founder, Chairman, and CTO of Bugcrowd. He is an 18-year veteran of information security, servicing clients ranging from startups to multinational corporations as a pentester, security and risk consultant and solutions architect, then most recently as a career entrepreneur. Casey pioneered the Crowdsourced Security as a Service model launching the first bug bounty programs on the Bugcrowd platform in 2012, and co-founded the disclose.io vulnerability disclosure standardization project in 2016.

A proud ex-pat of Sydney Australia, Casey lives with his wife and two kids in the San Francisco Bay Area. He is happy as long as he’s passionately pursuing potential.

David Castignola

Chief Revenue Officer

David has more than 25 years of sales leadership experience in the cybersecurity security space. Most recently, David served as Chief Operating Officer for Cylance, where he helped lead the sale of the company to BlackBerry in February 2019. Prior to Cylance, he was named the first Chief Revenue Officer at Optiv, a $2.5 billion security systems integrator and before that at RSA for 16 years where he served as the Senior Vice President of World Wide Sales, a security division of EMC, with $1+ billion in sales revenues and recognized as one of the world’s most prestigious cyber security companies.

David is a proud graduate of Michigan State and lives with his wife of 26 years and 3 kids in Phoenix, Arizona. In his spare time, David enjoys reading, cycling, and traveling in his RV!

Sammie Walker

Chief Marketing Officer

Sammie has more than 20 years of industry marketing experience in defining, launching and growing companies in the Networking, Analytics, Security, Digital Advertising, Telecom, and Collaboration markets. Prior to Bugcrowd, Sammie served as EVP and CMO for Infoblox, a leader in networking and security as-a-service. Previously, Sammie held senior management roles at Aerospike, Actian, Vidyo, Zenprise, and Transera Communications.

Sammie holds an MBA from the School of Economics & Business Administration from St. Mary’s College.

Dave Gerry

Chief Operating Officer

Dave Gerry most recently served as Chief Revenue Officer and Head of Global Operations (COO) at WhiteHat Security, where he oversaw global revenue growth, service delivery and customer-facing operations. Dave joined the company in 2017 and helped to lead WhiteHat through the sale to NTT in 2019 and, most recently, the sale to Synopsys in 2022.

Dave has been in the AppSec market for nearly a decade and has held key leadership positions within several cybersecurity companies such as WhiteHat Security, Veracode, Sumo Logic and The Herjavec Group. Dave is passionate about building programs that are repeatable, scalable and predictable, helping to drive customer business outcomes and technical value.

He holds an MBA from Suffolk University and a BA from Merrimack College, and he lives with his wife, Jaclyn, and two daughters, Caroline (5) and Addison (2), in Southern NH.

Mark Milani

Global Head of Product and Engineering

Mark is a technology executive with over 25 years of experience in leading global software engineering and product management teams. Mark brings a wealth of experience across a number of technology areas to his role of Head of Engineering at Bugcrowd, from developing solutions deep in the technology stack, to applications and cloud solutions for end users and service organizations.

Prior to Bugcrowd, Mark was SVP Product Engineering at Actian Corporation, and held multiple leadership positions at Oracle Corporation and Cross Access (acquired by IBM).

Nicholas McKenzie

Chief Information and Security Officer

Nick joins us most recently from National Australia Bank (NAB), one of Australia’s four largest financial institutions where he served as Executive General Manager-Chief Security Officer. At NAB, he was responsible for overseeing the enterprise security portfolio, which included cyber, physical security, investigations, and operational fraud capabilities to protect customers and employees, support business growth, and enable an operationally resilient bank.

Nick currently serves as an advisory board member for Google, Amazon Web Services, and Digital Shadows. Prior to NAB, Nick held IT risk and cybersecurity leadership roles at Standard Chartered Bank, J.P. Morgan, and UBS.

Cecilia Parisi

Vice President of People and Places

Cecilia brings more than 20 years of people leadership experience to Bugcrowd. She’s an experienced HR leader and an expert in building teams and cultivating innovative talent practices. Most recently, she served as VP of Human Resources at CREDO Mobile, a mobile virtual network operator, where she was retained to see the company through its acquisition, and Savvius, which helps network and security professionals improve their network security and performance. Prior to that, she was a Senior Regional Human Resources Manager at Verizon Business.

Cecilia taught several human resources courses at Golden Gate University where she received her  Masters of Science degree in Human Resources. A Bay Area native, she enjoys spending time with family and friends, getting into the next home project, and cooking, and traveling.

Grant McCracken

Vice President of Operations

A long time veteran of Bugcrowd, Grant joined the organization as an Application Security Engineer in 2014. Since then, he has overseen the creation and maintenance of hundreds of crowdsourced security programs as a Solutions Architect, as well as led the Researcher Success, Support, and Security Operations groups. He has been hacking for nearly a decade and is an Offensive Security Certified Professional (OSCP).

In his free time Grant enjoys writing and performing music, as well as staying active on running or hiking trails.

Chris Nadan

VP and General Counsel

Chris Nadan is VP, General Counsel & Corporate Secretary, responsible for all legal affairs for Bugcrowd. Chris has over 20 years’ legal experience at global technology companies, including most recently SVP & General Counsel at Actian Corporation, where he executed a successful sale of the company (staying on to help lead the company into its new incarnation), and Deputy General Counsel for Sun Microsystems, where he won Sun’s Chairman’s Award for Innovation. Chris was also an adjunct professor of law at U.C. Berkeley Boalt Hall School of Law. Chris received his undergraduate degree from Stanford and his J.D. from Berkeley, and lives in the Bay Area with his family.

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