The mailing, IMO, was just to keep up shareholder interest.
From the recent Noble 10K:
" Section 5 - Corporate Governance and Management
5.02 Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers
Thomas E. Barton Chown and Mark A. Kersey tendered their resignations as officers and directors of the Registrant effective at 5pm PDT, March 25, 2010.
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.