This excerpt taken from the C DEF 14A filed Jun 18, 2009.
Q: If I am a holder of common stock, how do I vote on the Public Preferred Stock Amendments?
If you are a record holder of common stock, you will be able to use the enclosed proxy card to grant your proxy to consent to, withhold consent on or abstain on each Public Preferred Stock Amendment for every share that you held on the Record Date. You may grant your proxy for such shares you owned as of the Record Date that you held directly in your name as the stockholder of record.
To submit your proxy as a holder of common stock, you must:
If you hold shares of common stock as of the Record Date and the shares are held by a bank, broker, custodian or other nominee, you are considered the beneficial owner of the shares, and these proxy materials, together with a voting instruction form, are being forwarded to you by your bank, broker, custodian or other nominee. As a beneficial owner, you must instruct your bank, broker, custodian or other nominee how to vote. Your bank, broker, custodian or other nominee cannot vote your shares on your behalf without your instructions. Depending upon your bank, broker, custodian or other nominee, you may be able to vote either by toll-free telephone or Internet. Please refer to the enclosed voting form sent by your nominee for instructions on how to vote by Internet. You may also vote by signing, dating and returning any voting instruction form or other method of voting made available by your bank, broker, custodian or other nominee.
Citigroup employees may receive their proxy cards separately.