SPMB Recruits CFO for OffSec
December 8, 2025 – Steven Popper of SPMB Executive Search has placed Ian Charles as the new CFO of OffSec in New York City. “Ian brings the strategic and operational depth to support OffSec, a global leader in cybersecurity education and hands-on training, as it enters its next phase of growth,” SPMB said in a LinkedIn post. “He is also highly experienced in catalyzing growth for emerging, category-creating companies; scaling financial operations; and serving as a trusted strategic partner to CEOs and cross-functional leadership.”
Mr. Charles is a seasoned finance leader who has held chief financial officer roles across a range of high-growth technology and platform businesses and continues to serve in board and advisory capacities. He currently sits on the board of Equihome Capital and The Glimpse Group, where he contributes to oversight and governance, including audit leadership. Earlier in his career, he guided financial operations for companies such as Filevine, Scoop Technologies, and Planful, and worked as a CFO partner with The Brenner Group supporting venture-backed firms. He also helped found and lead Unison in its early buildout and previously oversaw corporate development at UNX, giving him a track record that spans operating leadership, public-company board work, and company building in both software and real-estate–linked ventures.
OffSec is a cybersecurity education company that provides hands-on training and industry-recognized certifications for security practitioners and organizations. The company is widely known for developing and maintaining Kali Linux, and its learning platform focuses on practical, real-world offensive security and penetration-testing scenarios delivered through courses, labs, and structured certification paths. OffSec’s stated mission is to help individuals and teams build the capabilities needed to understand and defend against modern cyber threats, serving a global community of professionals across the public and private sectors.
For over 40 years, SPMB Executive Search has worked alongside its clients to build executive teams that ensure venture capital and private equity-backed game-changers achieve scale, and position multi-billion-dollar public companies to unlock innovation. Specializing in technology and innovation, SPMB recruits upper management and board members to growth-oriented companies in tech, consumer, and sustainability industries. SPMB has also placed dozens of senior executives at the portfolio companies of leading private equity firm partners including Blackstone, KKR, and TPG.
Related: SPMB Recruits CFO for Emergence Capital
Mr. Popper joined SPMB in 2007 from Howard Fischer Associates and has since become an integral part of the leadership team. The same year he joined SPMB, Mr. Popper founded its CFO practice which recruits accomplished, company-shaping financial executives to public, VC-backed, and PE-funded companies in software, fintech, biotech, consumer technology, and sustainability. Since inception, the CFO practice has completed over 200 searches across all segments. Mr. Popper’s clients include the portfolio companies of IVP, Accel Partners, Sequoia Capital, Warburg Pincus, a16z, Spectrum Equity, KPCB, and many more.
Go1 Search
SPMB and Mr. Popper also recently placed Caitlin Haberberger as the new CFO of Go1. “On behalf of Steven Popper and our financial officer practice, SPMB Executive Search is thrilled to congratulate our client Go1 on welcoming Caitlin Haberberger to the executive team as chief financial officer,” the firm said in a LinkedIn post. “Caitlin’s proven track record of scaling high-growth SaaS companies, combined with her expertise in strategic finance leadership and M&A, makes her an exciting addition to Go1’s world-class team as they continue to transform corporate learning and development globally. Wishing Go1 continued success in the new year with the addition of Caitlin to its leadership team.”
SPMB Completes CFO Searches for Contentsquare and Dragos
SPMB Executive Search has recruited Marcela Martin as CFO of Contentsquare in New York City and Mark Matheos as CFO of Dragos in Washington, D.C. Both assignments were led by partner Steven Popper. “I am delighted to welcome Marcela Martin as chief financial officer,” said Jonathan Cherki, founder and CEO of Contentsquare. “With over three decades of leadership experience, she has a proven track record of scaling major global companies. Her expertise in guiding companies to key corporate milestones will be invaluable as we continue on our journey of growth and innovation.”
Ms. Haberberger is a seasoned CFO with a track record of driving growth and value in high-growth, venture backed tech companies. Ms. Haberberger most recently served as CFO of Mezmo. She was brought on as the first CFO after Series C financing to build finance, accounting, IT, legal, and general business operations at this $40 million ARR venture backed data observability company.
Go1 is the world’s content expert and largest learning ecosystem powering the pursuit of potential. With expertly curated content spanning more than 80,000 courses from hundreds of industry-leading providers, Go1 delivers a seamless experience for both L&D leaders and employees in a single, easy-to-use platform. The company has raised over $400 million in funding from investors AirTree Ventures, Blue Cloud Ventures, Five Sigma, Insight Partners, Madrona, Salesforce Ventures, SEEK Investments, SoftBank Vision Fund 2 and Y Combinator.
Related: SPMB Completes Search for NewView Capital
Contributed by Scott A. Scanlon, Editor-in-Chief and Dale M. Zupsansky, Executive Editor – Hunt Scanlon Media
