Doc re Preliminary Proxy Statement

Press Release

Company Caterpillar Inc.

ISIN US1491231015

Symbol CAT / CATR

Headline Doc re Preliminary Proxy Statement

11 April 2012

CATERPILLAR INC. FILES PRE 14A

PEORIA, Ill.- 11 April 2012 - Caterpillar Inc. (NYSE: CAT / NYSE Euronext: CATR / LSE: CAT) informs its stockholders that today, Caterpillar's Preliminary Proxy on Form PRE 14A has been filed with the U.S. Securities and Exchange Commission ("SEC"). The Form PRE 14A filed in respect of Caterpillar can be found on the SEC Internet site (www.sec.gov).

Caterpillar files electronically with the SEC required reports on Form 8-K, Form 10-Q, Form 10-K and Form 11-K; proxy materials; ownership reports for insiders as required by Section 16(a) of the U.S. Securities Exchange Act of 1934, as amended; and registration statements on Forms S-3 and S-8, as necessary; and other forms or reports, as required. All of the forms and reports filed electronically with the SEC are available on the SEC Internet site (www.sec.gov).

Caterpillar also maintains an Internet site (www.Caterpillar.com) and copies of its annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and any amendments to these reports filed or furnished with the SEC are available free of charge through Caterpillar's Internet site (www.Caterpillar.com/secfilings) as soon as reasonably practicable after the relevant document has been filed with the SEC.

CONTACT: Jim Dugan, Corporate Public Affairs, Office, +1-309-494-4100, or Mobile, +-1-309-360-7311