Axonius has announced a leadership transition as co-founder and CEO Dean Sysman moves into the role of executive chairman. Company President Joe Diamond is assuming the additional role of interim CEO, Axonius said in a LinkedIn post Monday.
“We are perfectly positioned to arm organizations with true Actionability in the age of [artificial intelligence]. The future isn’t just bright, it’s blinding,” Sysman stated. “The board and I are incredibly confident handing the reins to Joe Diamond as President and Interim CEO, to continue his phenomenal impact since becoming President, as we fulfill our long-term leadership vision.”
Under the new structure, Sysman said in a blog post that he will focus on strategic vision. He will also continue working with the executive team and representing Axonius publicly.
Who Is Dean Sysman?
As CEO, Sysman led Axonius through rapid growth to over $100 million in annual recurring revenue. Under his leadership, the Axonius Asset Cloud cybersecurity platform also achieved the Federal Risk and Authorization Management Program moderate authorization.
Prior to Axonius, Sysman co-founded and served as the chief technology officer of the cybersecurity firm Cymmetria, which the private equity firm Stage Fund acquired in 2019.
He is also a prolific investor and venture adviser across technology and cybersecurity startups.
Who Is Joe Diamond?
Joe Diamond is president and interim CEO of Axonius. He joined the company in 2024 as chief marketing officer and was named president in August 2025.
Before Axonius, Diamond was at Okta for over seven years. His most recent role at Okta is as global vice president of demand market.
He also held senior leadership roles at Proofpoint, RiskIQ and Symantec, with experience spanning product strategy, marketing and go-to-market leadership.
