Tenable Holdings, Inc. announced on October 5, 2026, that its Board of Directors approved an increase in the size of the board from 10 to 11 members and appointed Charles Bell to serve as a director, effective immediately.
Bell will serve as a Class III director, with his term expiring at the 2027 Annual Meeting of Stockholders. He has been appointed to the company's Cybersecurity Risk Management Committee.
According to the filing, Bell is currently Executive Vice President, Engineer at Microsoft Corporation, a position he has held since February 2026. Prior to this, he served as Executive Vice President, Security, Compliance, Identity, and Management at Microsoft from September 2021 to February 2026. Before joining Microsoft, Bell spent over two decades at Amazon.com, Inc., including serving as Senior Vice President of Amazon Web Services (AWS). He also previously worked at The Boeing Company and Oracle Corporation.
The Board granted Bell 10,386 restricted stock units upon the commencement of his service. These RSUs will vest in three equal annual installments on each anniversary of the grant date, subject to his continued service. Additionally, the Board approved compensation for 2026, including a Board Service Retainer of $35,000 and a Cybersecurity Committee Member Service Retainer of $5,000.
