Keithley Instruments (KEI)

Item 9.01.     Financial Statements and Exhibits

(d)       Exhibits.

            99.1      Press Release, dated December 11, 2009.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

EXHIBIT INDEX

Exhibit 99.1                  Press Release, dated December 11, 2009.

Item 9.01.   Financial Statements and Exhibits

 (d)   Exhibits.

2.01     Purchase and Sale Agreement, dated November 19, 2009, by and between Keithley Instruments, Inc. and Agilent Technologies, Inc.

99.1     Press Release dated November 19, 2009.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01     Financial Statements and Exhibits.

(c) Exhibits.
 99. Press Release Dated February 23, 2009

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01.     Financial Statements and Exhibits.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

3

Item 9.01 Financial Statements and Exhibits

(c) Exhibits.

 99. Press Release Dated November 3, 2008

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01     Financial Statements and Exhibits.

(c) Exhibits.

 99. Press Release Dated July 24, 2008

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated April 24, 2008

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated January 24, 2008

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated November 5, 2007

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated July 26, 2007

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.

10.1 Form of Indemnification Agreement entered into by the Company and Thomas A. Saponas, as a member of the Company's Board of Directors, on May 11, 2007. (Reference is made to Exhibit 10.1 of the Company's Current Report on Form 8-K dated December 2, 2004 (File No. 001-09965), which Exhibit is incorporated herein by reference.)

10.2 Form of Indemnification Agreement entered into by the Company and Suzanne Schulze Taylor, as an executive officer of the Company, on May 11, 2007. (Reference is made to Exhibit 10.2 of the Company's Current Report on Form 8-K dated December 2, 2004 (File No. 001-09965), which Exhibit is incorporated herein by reference.)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated April 26, 2007

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated January 25, 2007

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

Exhibits.
99.1 Earnings release dated December 29, 2006
99.2 Press release dated December 29, 2006 reporting results of Special Committee of Keithley Instruments, Inc. Board of Directors

The information contained herein and in the accompanying exhibits shall not be incorporated by reference into any filing of the Registrant, whether made before or after the date hereof. The information in this report, including the exhibits hereto, shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section of Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated July 27, 2006

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated April 26, 2006

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits:

16.1 Letter from PricewaterhouseCoopers LLP dated January 27, 2006, to the Securities and Exchange Commission.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated January 25, 2006

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated November 4, 2005

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01 Financial Statements and Exhibits.

(c) Exhibits.
99. Press Release Dated July 22, 2005

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index

Item 9.01. Financial Statements and Exhibits.

(c) Exhibits.

10.1 Form of Indemnification Agreement entered into by the Company and Brian J. Jackman, as a member of the Company's Board of Directors on May 5, 2005. (Reference is made to Exhibit 10.1 of the Company's Current Report on Form 8-K dated December 2, 2004 (File No. 001-09965), which Exhibit is incorporated herein by reference.)

99.1 Press Release Dated May 5, 2005

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit Index