Exhibit 99.1

Investor ID Number

THE TERMS AND CONDITIONS OF THE RIGHTS OFFERING ARE SET FORTH IN PACIFIC CAPITAL BANCORP’S PROSPECTUS DATED [•], 2010 (THE “PROSPECTUS”)

AND ARE INCORPORATED HEREIN BY REFERENCE. COPIES OF THE PROSPECTUS ARE AVAILABLE UPON REQUEST FROM BNY MELLON SHAREOWNER

SERVICES (BY CALLING, IF YOU ARE LOCATED WITHIN THE U.S., CANADA OR PUERTO RICO, (866) 339-6260 (TOLL FREE) OR IF YOU ARE LOCATED OUTSIDE THE

U.S., (201) 680-6579 (COLLECT)).

Pacific Capital Bancorp (the “Company”) is offering (the “Rights Offering”) to its shareholders of record as of 4:01 p.m., New York City time, on August 30, 2010 (the “Record Date”)

non-transferable rights (each, a “Subscription Right”) to purchase up to an aggregate of 726,975,565 shares of the Company’s common stock, no par value (the “Common Stock”), at

a subscription price of $0.20 per share (the “Subscription Price”). Each shareholder of record as of the Record Date will receive, at no charge, 15.335 Subscription Rights for each

share of Common Stock owned on the Record Date. Each Subscription Right will allow the holder thereof to subscribe to purchase one share of Common Stock at the Subscription

Price. Subscription Rights may only be exercised in whole numbers; the Company will not issue fractional Subscription Rights and will round all of the Subscription Rights down to

the nearest whole number. (See the reverse side for further instructions)

Signature of Stockholder Date Daytime Telephone #

Signature of Stockholder Date Daytime Telephone #

X

X

SHARES TO SUBSCRIBE

SEE INSTRUCTIONS ON THE REVERSE SIDE

Signature: This form must be signed by the registered holder(s) exactly as their name(s) appears on the certificate(s)

or by person(s) authorized to sign on behalf of the registered holder(s) by documents transmitted herewith.

ENCLOSED IS MY CHECK FOR $             

PACIFIC CAPITAL BANCORP

EXERCISE OF SUBSCRIPTION RIGHTS

A. Number of shares of Common Stock subscribed for through the exercise of Subscription Rights:             Shares of Common Stock

B. Total Subscription Price (Line A multiplied by $0.20): $             

C. Method of Payment, check (1) or (2):

(1) Certified or cashier’s check, bank draft drawn upon a U.S. bank, payable to “BNY Mellon Shareowner Services (acting on behalf of The Bank of

New York Mellon, N.A., the Subscription Agent)” or

(2) Uncertified check payable to “BNY Mellon Shareowner Services”, received no later than [•], 2010. If your funds do not clear your bank

before 5:00 p.m., New York City time, Day [•], 2010, your exercise of your Subscription Rights will not be accepted.

SUBSCRIPTION CERTIFICATE NUMBER

SHARES TO SUBSCRIBE

CUSIP NUMBER

SUBSCRIPTION RIGHTS RECORD DATE SHARES

WHERE TO FORWARD YOUR SUBSCRIPTION RIGHTS MATERIALS

By Mail: By Overnight Courier or By Hand:

BNY Mellon Shareowner Services BNY Mellon Shareowner Services

Attn: Corporate Action Dept. Attn: Corporate Action Dept., 27th Floor

P.O. Box 3301 480 Washington Boulevard

South Hackensack, NJ 07606 Jersey City, NJ 07310

HOW TO CONTACT BNY MELLON SHAREOWNER SERVICES

By Telephone – 9 a.m. to 6 p.m. New York Time, Monday through Friday, except for bank holidays:

From within the U.S., Canada or Puerto Rico

1-866-339-6260 (Toll Free)

From outside the U.S.

1-201-680-6579 (Collect)

PLEASE CERTIFY YOUR TAXPAYER IDENTIFICATION NUMBER (TIN) BY COMPLETING THE

INFORMATION IN BOX NUMBER D ON THE REVERSE SIDE.

PACIFIC CAPITAL BANCORP NON-TRANSFERABLE SUBSCRIPTION RIGHTS CERTIFICATE AND ELECTION FORM

THIS RIGHTS OFFERING EXPIRES AT 5:00 P.M., NEW YORK CITY TIME, ON [•], 2010 AND THIS SUBSCRIPTION RIGHTS CERTIFICATE AND

ELECTION FORM IS VOID THEREAFTER.

WHOLE SHARES

5264 Pacific Capital LT_08 9/30/10 11:54 AM Page 1

4 S]UBSTITUTE FORM Internal W- Revenue 9 – Department Service of the Treasury,

Payer’s Request for Taxpayer Identification Number (TIN)

Pa rt 1 – PLEAS E PRO VI DE Y OU R TAX PAYE R

I D ENT F I ICATIO N NUMB ER (“TIN”) IN THE BOX AT TH E

RI GHT AND CER TIF Y BYS I G NING AND DATING BELOW

Under penalties of perjury. I certify that:

1. The number shown on this form is my correct taxpayer identification numb er (or I am wait ing for a number to be issued to me), and

2. I am not subject to backu p wit hholding because: (a )I am exempt from backup withholding, or (b )I have not been notified by the Internal Revenue Service (IRS) that I am subject to backup withholding as a result of a fa ilu re to report all inte rest or dividends, o r (c) th e I RS has notified me t hat I am no longer subject to backup withholding, and

3.I am a U.S. citizen or other U.S. person (including a U.S. r e sident alien).

Signature

Date

(In st ructions continued from the reverse side)

You h ave been granted the number of Subscription Rights indicated on the reverse side, which entitles you to subscribe for an equal number of shares of Common Stock. The number of Subscription Rights was determined by multiplying the number of shares you owned on the Record Date by 15.335 and, if th ere was a fraction re maining, rounding down to the nearest whole number.

The Rights Ofering expir es at 5:00 p.m. , New York City time, on [ ],2 010 (the “Expiration Date”) unless the Company decides, in its sole discretion, to extend the Expiration Date orc ancelt he Rights Offering earlier.

For a more complete description of the terms and condit ions of the Rights Offering,pleaserefer to the Prospectus, which you should read care fully in its entirety. Please also read carefully accompanyingi nstructio ns which has been provided to you with this Subscription Rights Certificate and Election Form.

Bye xecuting this Subscrip tio n Rights Certif icate and Election Form on th e re verse side, the undersigned hereby acknowledges and agrees to the fo llowing terms and conditions:

(1 ) at th e ti me of submitting this Subscription Rights Certifi cate and Election Form, th e undersigned agrees to deliver the full purchase price for all shares of Common Stock, (2) book entry shares in lieu of certific ates representing shares of Common Stock duly subscribed and paid for will be issued as soon as practicable after the te rmination of the Rights Offering in accordance with the terms of the Prospectus and (3) the undersigned agrees to all terms and conditions of the Prospectus,which is incorporated herein by reference, and of this Subscription Rights Certificate and Ele ction Form.

INSTRUCTIONS FOR COMPLETING THE SUBSCRIPTION RIGHTS CERTIFICATE AND ELECTION FORM

1 Sign and date Box 1and include your day time phonen umber.

2 If you wish to irrevocably exercise all or any of the Subscripti on Rights in the Rights Offering, ple ase check this box and in dic ate h t e number of Subscrip it on Rights that you wish to irrevocably exercise.

3 Fail ure to include the fullp urchase price wil l result inB NY Mel onS hareowner Services applying such payment to exercise the Subscrip it on Rights to the fulle st extent possible based on the amount of payment received, subject to the eliminatio n of fractio nal shares. The purchase price must be paid as directed n i the Prospectus and accompanying instructio ns. The Subscription Rights Certificate and Election Form, or Notice of Guarante ed Delivery, and ful payment of h t e total subscription amount o f r al shares of Common Stock subscribed in the Rights Offering, in cluding if nal clearance of any uncertified personal checks, must be received by BNY Melon Shareowner Serv ices before 5:00 p.m., New York City time, on the Expiration Date.

Once you have exercised any Subscription Rights, such exercise may not be cancelled, revoked or oth erwise amended. Subscription Rights that are not exercised prior to 5:00p m . ., New York Cit y time, on the Expiration Date will expire.

4 PLEASE SIGN INB OX 4 TO CERTIFY YOUR TAXPAYER ID OR SOCIA L SECURITY NUMBER if you are a U.S. Taxpayer. If the Taxpayer ID or Social Securit y Number is n i correct or blank, write the corrected number in Box 4 and sign to certify.

Please note that BNY Mellon ShareownerS ervices may withhold 28% of your proceeds as required by the IRS if the Taxpayer ID or Social Security Number is not certi fi ed on our records. If you are a non—U.S. Taxpayer, please complete and return form W-8BEN.

THIS RIGHTS OFFERING EXPIRES AT 5:00 P.M., NEW YORK CITY TIME, ON [•], 2010 AND THIS SUBSCRIPTION RIG HTS CERTIFICATE AND ELECTIO N FORM IS VOIDT HEREAFTER.