Rambus Inc. filed a Form 8-K on September 4, 2026, disclosing the retirement of Chief Accounting Officer John Allen and the appointment of William Taulbee as his successor, both effective September 8, 2026.

Key Highlights

  • Retirement: John Allen, Vice President, Accounting and Chief Accounting Officer, provided notice of retirement on August 31, 2026, effective September 8, 2026, with employment continuing through September 30, 2026 for transition support.
  • No disagreement: The filing states Allen's retirement "does not involve any disagreement with the Company related to its operations, policies or practices."
  • New appointment: William Taulbee, age 50, was appointed Vice President and Chief Accounting Officer, serving as Principal Accounting Officer, effective September 8, 2026.
  • Base salary: Taulbee's annual base salary is $355,000, with a target annual bonus of $142,000.
  • Sign-on bonus: Taulbee will receive a sign-on bonus of $175,000 to be paid over two years.
  • Equity grant: A restricted stock unit grant valued at $700,000 vesting annually over four years was awarded to Taulbee.
  • Prior experience: Taulbee previously held roles including Chief Audit Executive at Western Digital from December 2019 to August 2025, and most recently served as an Executive Partner at Gartner, Inc.

Rambus Accounting Leadership Transition: Allen Retires, Taulbee Steps In

According to the filing, John Allen notified Rambus Inc. on August 31, 2026, of his decision to retire from his position as Vice President, Accounting and Chief Accounting Officer, as well as his role as Principal Accounting Officer, effective September 8, 2026. The company disclosed that Allen will remain employed through September 30, 2026 to assist with the transition. The filing explicitly states that his departure does not involve any disagreement with the company regarding its operations, policies, or practices.

The company's board of directors appointed William Taulbee on August 31, 2026, to succeed Allen. According to the filing, Taulbee, age 50, has served as the company's Vice President, Accounting since August 2026. Prior to joining Rambus, he held several senior roles at Western Digital, a data storage company, from December 2019 to August 2025, including Vice President, Strategy and Transformation, Vice President Finance Strategy, and Chief Audit Executive. He also served as an Executive Partner at Gartner, Inc., advising Chief Audit Executives. Taulbee earned a BA in Business Administration from Western Michigan University in 1998.

The filing details Taulbee's compensation package as including a base salary of $355,000, a target annual bonus of $142,000, a sign-on bonus of $175,000 payable over two years, and a restricted stock unit grant of $700,000 vesting annually over four years. The company also disclosed that it will enter into its standard form of indemnification agreement with Taulbee, and that he will be eligible to participate in benefit plans applicable to other executive officers. The filing notes no arrangement with any other person related to his appointment, no family relationships with any director or executive officer, and no material interest in any transaction requiring disclosure under Item 404(a) of Regulation S-K. Rambus is listed on NASDAQ:RMBS.

What Was Disclosed

Rambus disclosed the retirement of its Chief Accounting Officer John Allen and the appointment of William Taulbee to that role, both effective September 8, 2026, along with Taulbee's full compensation package and professional background.