Corporate
Information

Directors

Don Aquilano
Chairman of the Board
Rubicon Technology, Inc.
Managing Director and President
Allos Ventures, a venture capital firm

Donald R. Caldwell
Chairman and Chief Executive Officer
Cross Atlantic Capital Partners, Inc.,
a venture capital fund manager

Michael Mikolajczyk
Managing Director
Catalyst Capital Management LLC
a private equity firm

Raymond J. Spencer
Chairman, South Australia Economic Development Board and former chairman, Financial Services Strategic Business Unit of Capgemini SA, a provider of consulting, technology and outsourcing services

Raja M. Parvez
President and Chief Executive Officer
Rubicon Technology, Inc.

Audit Committee

Mikolajczyk, Aquilano, Spencer

Compensation Committee

Caldwell, Mikolajczyk, Spencer

Nominating and Governance Committee

Spencer, Aquilano, Caldwell

Executive Officers

Raja M. Parvez
President and Chief Executive Officer

William F. Weissman
Chief Financial Officer

Transfer Agent

American Stock Transfer & Trust Company, LLC
6201 15th Avenue
Brooklyn, NY 11219
1-800-937-5449

Independent Registered Public Accounting Firm

Grant Thornton LLP
175 W. Jackson Boulevard
20th Floor
Chicago, IL 60604

To Request an Annual Report or Form 10-K

Additional copies of this Annual Report or the Company’s Form 10-K filed with the Securities and Exchange Commission are available, without charge, upon request by contacting Investor Relations at the address or phone number listed below.

Common Stock Information

The Company’s common stock is listed on the NASDAQ Global Market. Trading of the Company’s common stock began on November 16, 2007 under the symbol RBCN. As of April 29, 2012, there were approximately 28 record holders of the Company’s common stock.

Dividends

The Company has never declared or paid cash dividends on its common stock. The Company intends to retain future earnings to finance the growth and development of its business, and does not anticipate declaring or paying any cash dividends in the foreseeable future.

Common Stock Performance

Fiscal 2010	High	Low
1st Quarter	$22.50	$14.50
2nd Quarter	$34.19	$20.17
3rd Quarter	$35.90	$19.51
4th Quarter	$26.60	$18.05
Fiscal 2011	High	Low
1st Quarter	$27.68	$17.83
2nd Quarter	$28.97	$16.15
3rd Quarter	$17.57	$10.66
4th Quarter	$12.82	$8.23

Executive Offices

900 E. Green Street, Unit A
Bensenville, IL 60106
Phone: 847-295-7000
Fax: 847-233-0177

Annual Meeting

June 15, 2012 | 8:00 a.m. CDT Hyatt Regency O’Hare
9300 W. Bryn Mawr Avenue
Rosemont, IL 60018

Legal Counsel

McGuire Woods LLP
77 West Wacker Drive
Suite 4100
Chicago, IL 60601

Investor Relations

Requests for information should be directed to:
Dee Johnson
Vice President, Investor Relations
Rubicon Technology
900 E. Green Street, Unit A
Bensenville, IL 60106
Phone: 847-457-3426

For More Information

For additional information,
please visit our website at www.rubicon-es2.com