| Date Filed | Type | Description |
| 12/15/2010 |
10-K
| Annual Report for the period ended September 30, 2010 |
| 12/09/2010 |
SC 13D/A
| DANAHER CORP has filed a Schedule 13D for KEITHLEY INSTRUMENTS, INC. |
| 12/09/2010 |
25-NSE
| Form 25-NSE - Notification filed by national security exchange to report the removal from listing and registration of matured, redeemed or retired securities |
| 12/09/2010 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 12/09/2010 |
SC 13D/A
| KEITHLEY JOSEPH P reports a 0% stake in Keithley Instruments, Inc. |
| 12/08/2010 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 12/08/2010 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 12/08/2010 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 12/08/2010 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 12/08/2010 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 12/08/2010 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 12/08/2010 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 12/08/2010 |
S-8 POS
| Form S-8 POS - Securities to be offered to employees in employee benefit plans, post-effective amendments |
| 12/08/2010 |
8-K
| Quarterly results |
| 11/19/2010 |
8-K
| Submission of Matters to a Vote of Security Holders, Financial Statements and Exhibits |
| 11/16/2010 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 11/15/2010 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 11/04/2010 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material |
| 11/04/2010 |
8-K
| Quarterly results |
| 10/28/2010 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material |
| 10/27/2010 |
BW
| The Law Office of Abe Shainberg Launches an Investigation into the Possible Breaches of Fiduciary Duty by the Board of Keithley Instruments, Inc. in Connection with the Sale of the Company to Danaher Corporation - KEI |
| 10/25/2010 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material |
| 10/25/2010 |
DEFM14A
| Form DEFM14A - Definitive proxy statement relating to merger or acquisition |
| 10/21/2010 |
BW
| Free Keithley Web-Based Seminar Reveals How To Conquer Challenging High Brightness LEDs Measurements |
| 10/15/2010 |
8-K
| Form 8-K - Current report |
| 10/13/2010 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 10/08/2010 |
PREM14A
| Form PREM14A - Preliminary proxy statements relating to merger or acquisition |
| 10/08/2010 |
SC 13D
| Form SC 13D - General statement of acquisition of beneficial ownership: |
| 10/07/2010 |
SC 13D
| DANAHER CORP has filed a Schedule 13D for KEITHLEY INSTRUMENTS, INC. |
| 10/05/2010 |
SC 13D/A
| KEITHLEY JOSEPH P reports a 16.8% stake in Keithley Instruments, Inc. |
| 09/29/2010 |
BW
| Law Offices of Howard G. Smith Announces Investigation on Behalf of Shareholders Keithley Instruments, Inc. in Connection with the Proposed Acquisition of the Company by Danaher Corporation |
| 09/29/2010 |
BW
| Levetown & Jenkins, LLP Announces Investigation into Acquisition of Keithley Instruments Inc. by Danaher Corporation |
| 09/29/2010 |
8-K
| Amended existing or entered into new employment agreement with an officer |
| 09/29/2010 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material |
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