Document:

exv10w1

Exhibit 10.1

VOTING AGREEMENT

          This VOTING AGREEMENT (this “Agreement”), dated as of September 29, 2010, is by and
among Danaher Corporation, a Delaware corporation (the “Parent”), Aegean Acquisition Corp.,
an Ohio corporation and an indirect wholly-owned subsidiary of the Parent (the “Merger
Sub”), and Keithley Investment Co. Limited Partnership, an Ohio limited partnership (the
“Stockholder”).

          WHEREAS, the Parent, the Merger Sub and Keithley Instruments, Inc. (the “Company”)
propose to enter into an Agreement and Plan of Merger dated as of the date hereof (as the same may
be amended or supplemented pursuant to the terms thereof, the “Merger Agreement”) providing
for the merger of the Company with and into Merger Sub (the “Merger”), upon the terms and
subject to the conditions set forth in the Merger Agreement;

          WHEREAS, as of the date hereof, the Stockholder beneficially owns the number of Class B Common
Shares set forth opposite the name of the Stockholder on Schedule A hereto (together with
any Common Shares, Class B Common Shares and any other voting securities of the Company that the
Stockholder acquires beneficial ownership of after the date hereof, the “Owned Shares”);

          WHEREAS, as an inducement and a condition to entering into the Merger Agreement, the Parent
has required that the Stockholder agree, and the Stockholder has agreed, to enter into this
Agreement;

          WHEREAS, the Stockholder and the Parent desire to set forth their agreement with respect to
the voting of certain Class B Common Shares upon the terms and subject to the conditions set forth
herein; and

          WHEREAS, capitalized terms used but not defined herein shall have the meanings set forth in
the Merger Agreement.

          NOW, THEREFORE, in consideration of the foregoing and the respective representations,
warranties, covenants and agreements set forth below, the parties agree as follows:

     1. Voting; Proxies; Etc.

          (a) Agreement to Vote. The Stockholder hereby agrees that, from and after the date
hereof and until this Agreement shall have been terminated in accordance with Section 6:

 

 

               (i) At any meeting of the stockholders of the Company called for purposes that include
approval of the Merger and adoption of the Merger Agreement, however called, or at any adjournment
or postponement thereof, or in connection with any written consent of the stockholders of the
Company or in any other circumstances in which the stockholders of the Company are entitled to
vote, consent or give any other approval with respect to the Merger and adoption of the Merger
Agreement, the Stockholder shall (a) appear at such meeting or otherwise cause its Covered Shares
(as defined below) to be counted as present thereat for purposes of calculating a quorum, and
respond to each request by the Company for written consent, if any, and (b) vote or cause to be
voted (including by written consent, if applicable) such number of Owned Shares beneficially owned
as of the relevant time that shall equal 19.99% of the voting power (as such term is used in
Chapter 1701 of the Ohio Revised Code) of the Company (the “Covered Shares”), in each case
to the extent such Covered Shares are entitled to be voted and are not so voted pursuant to the
proxy granted in Section 1(b), in favor of adoption of the Merger Agreement and the approval of the
terms thereof and each of the other actions contemplated by the Merger Agreement and this
Agreement. It is understood and agreed that in no event shall Parent or Merger Sub acquire,
directly or indirectly, voting power (as such term is used in Chapter 1701 of the Ohio Revised
Code) of the Company’s Common Shares and Class B Common Shares that, in aggregate, will entitle
Parent and Merger Sub, collectively, to exercise or direct the exercise of the voting power of the
Company in the election of the directors equaling more than 19.99% of such voting power. Nothing
herein shall restrict the right of the Stockholder to vote, consent or give any other approval for
any Owned Shares that are not Covered Shares with respect to any matter in which the Stockholder is
entitled to vote.

               (ii) At any meeting of the stockholders of the Company, however called, or at any adjournment
or postponement thereof, or in connection with any written consent of the stockholders of the
Company, or in any other circumstances in which the Stockholder is entitled to vote, consent or
give any other approval, the Stockholder shall vote or cause to be voted (including by written
consent, if applicable) the Covered Shares against the following actions:

     (1) any proposal that would result in a breach by the Company of the Merger Agreement
or by the Stockholder hereunder; or

     (2) any action or agreement that is intended to, or would be reasonably likely to,
impede, interfere with, delay, postpone or attempt to discourage the Merger, including, but
not limited to: (A) the adoption or approval by the Company of any Company Takeover
Proposal; (B) any amendment of the Company’s articles of incorporation or code of
regulations; (C) any material change in the present capitalization or dividend policy of the
Company; or (D) any other material change in the Company’s corporate structure or business.

          (b) Proxies. As security for the agreements of the Stockholder provided for herein,
the Stockholder hereby grants, in accordance with Section 1701.48 of the Ohio Revised Code, to the
Merger Sub a proxy for the term of this Agreement to vote the Covered Shares as

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indicated in Section 1(a) above. The Stockholder agrees that this proxy shall be irrevocable
during the term of this Agreement and coupled with an interest and each of the Stockholder and the
Merger Sub will take such further action or execute such other instruments as may be necessary to
effectuate the intent of this proxy and the Stockholder hereby revokes any proxy previously granted
by the Stockholder with respect to the Covered Shares. The irrevocable proxy granted hereunder
shall automatically terminate upon the termination of this Agreement.

          (c) Transfer Restrictions. The Stockholder agrees not to directly or indirectly (i)
sell, transfer, grant, pledge, encumber, assign or otherwise dispose of or hypothecate (including
by gift or by contribution or distribution to any trust or similar instrument (collectively,
“Transfer”)), or enter into any contract, option or other arrangement or understanding
(including any profit sharing arrangement) with respect to the Transfer of, any of the Owned Shares
other than pursuant to the terms hereof and the Merger Agreement, (ii) enter into any voting
arrangement or understanding with respect to the Owned Shares (other than this Agreement), whether
by proxy, voting agreement or otherwise, (iii) convert the Stockholder’s Class B Common Shares into
Common Shares or (iv) take any action that would reasonably be expected to make any of its
representations or warranties contained herein untrue or incorrect in any material respect or would
have the effect of preventing or disabling the Stockholder from performing any of its obligations
hereunder. Any action attempted to be taken in violation of the preceding sentence will be null and
void.

          (d) Appraisal Rights. The Stockholder hereby irrevocably waives any and all rights
which he or she may have as to appraisal, dissent or any similar or related matter with respect to
the Merger.

          (e) No Solicitation. The Stockholder acknowledges and agrees that it will be deemed a
Company Representative for purposes of Section 4.2(a) of the Merger Agreement and agrees to be
bound by and to comply with the provisions of Section 4.2(a) of the Merger Agreement as if the
Stockholder was a party to the Merger Agreement. Nothing in this Agreement shall restrict the
activities of Joseph P. Keithley in his capacity as a director of the Company.

          (f) Recommendation Change. The Stockholder acknowledges and agrees that, during the
term of this Agreement, the obligations of the Stockholder specified in this Section 1 shall not be
affected by any withdrawal, qualification or modification of the recommendation by the Company or
its board of directors relating to the Merger.

     2. Representations and Warranties of the Stockholder. The Stockholder hereby
represents and warrants to the Parent and the Merger Sub as of the date hereof as follows:

          (a) Authorization; Validity of Agreement; Necessary Action. The Stockholder has all
necessary power and authority to execute and deliver this Agreement, to

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perform the Stockholder’s obligations hereunder and to consummate the transactions
contemplated hereby. This Agreement has been duly and validly executed and delivered by the
Stockholder, and constitutes the legal, valid and binding obligation of the Stockholder,
enforceable against the Stockholder in accordance with its terms, except as the enforcement thereof
may be limited by applicable bankruptcy, insolvency, reorganization, moratorium or similar Laws
affecting the rights of creditors generally and subject to general equity principles.

          (b) No Violations; Consents and Approvals.

               (i) Except for filings, permits, authorizations, consents and approvals as may be required
under, and other applicable requirements of, any applicable Antitrust Laws and Sections 13(d) and
16 of the Exchange Act, neither the execution, delivery or performance of this Agreement by the
Stockholder nor the consummation by the Stockholder of the transactions contemplated hereby nor
compliance by the Stockholder with any of the provisions hereof will directly or indirectly (with
or without notice or lapse of time or both): (A) contravene, conflict with, or result in a
violation of, or give any Governmental Entity or other Person the right to exercise any remedy or
obtain any relief under, any governmental regulation or any order, injunction, writ or decree to
which the Stockholder, or any of the Stockholder’s assets, may be subject, or (B) require a
consent, approval, ratification, permission, order or authorization from any Person; except, in the
case of clauses (A) and (B), for any such conflicts, violations, breaches, defaults or other
occurrences that would not prevent or impair the ability of the Stockholder from consummating the
transactions contemplated hereby in any material respect, or otherwise prevent the Parent or the
Merger Sub from exercising their respective rights under this Agreement in any material respect.

               (ii) The execution and delivery of this Agreement by the Stockholder does not, and the
performance of this Agreement and the consummation of the transactions contemplated hereby will
not, require any consent, approval, license, permit, order, declaration or authorization of, or
registration or filing with or notification to, any Governmental Entity, except (A) for the
pre-merger notification requirements of applicable Antitrust Laws and applicable filings under
Sections 13(d) and 16 of the Exchange Act, and (B) where failure to obtain such consent, approval,
license, permit, order, declaration, authorization or registration, or to make such filings or
notifications, would not prevent or impair the ability of the Stockholder from consummating the
transactions contemplated hereby in any material respect, or otherwise prevent the Parent or the
Merger Sub from exercising their respective rights under this Agreement in any material respect.

          (c) Shares. The Owned Shares are owned of record by the Stockholder. Except as set
forth on Schedule A, the Stockholder does not own, of record or beneficially, any warrants,
options or other rights to acquire any other voting securities of the Company. The Stockholder has
and will continue to have during the term hereof, sole voting power, sole power of disposition,
sole power to issue instructions with respect to the matters set forth in Section 1 hereof, sole
power of conversion, sole power to demand appraisal rights and sole power to agree to all of the
matters set forth in this Agreement, in each case with respect to all of the Owned

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Shares with no limitations, qualifications or restrictions on such rights, subject to
applicable federal securities laws and the terms of this Agreement. The Stockholder has good and
valid title to the Owned Shares and at all times during the term hereof and on the Closing Date
will have good and valid title to the Covered Shares, free and clear of all liens, claims, security
interests or other charges or encumbrances.

          (d) No Broker’s Fees. Except as disclosed in the Merger Agreement, no broker, finder,
investment banker or other Person is entitled to any broker’s, finder’s or other fee or commission
in connection with the transactions contemplated hereby based upon arrangements made by or on
behalf of the Stockholder.

          (e) Reliance. The Stockholder acknowledges and agrees that each of the Parent and the
Merger Sub are entering into the Merger Agreement and the transactions contemplated therein in
reliance upon the Stockholder’s execution and delivery of this Agreement.

     3. Representations and Warranties of Parent and Merger Sub. The Parent and the Merger
Sub, jointly and severally, hereby represent and warrant to the Stockholder as of the date hereof
as follows:

          (a) Organization. Each of the Parent and the Merger Sub is a corporation duly
organized, validly existing and in good standing under the laws of the jurisdiction of its
incorporation.

          (b) Corporate Authorization; Validity of Agreement; Necessary Action. Each of the
Parent and the Merger Sub has all necessary corporate power and authority to execute and deliver
this Agreement, to perform its obligations hereunder and to consummate the transactions
contemplated hereby. The execution, delivery and performance by each of the Parent and the Merger
Sub of this Agreement and the consummation by them of the transactions contemplated hereby have
been duly and validly authorized by all necessary corporate action and no other corporate
proceedings on the part of the Parent or the Merger Sub are necessary to authorize the execution
and delivery by them of this Agreement and the consummation by them of the transactions
contemplated hereby. This Agreement has been duly and validly executed and delivered by the Parent
and the Merger Sub, and constitutes the legal, valid and binding obligation of the Parent and
Merger Sub, enforceable against each of them in accordance with its terms, except as the
enforcement thereof may be limited by applicable bankruptcy, insolvency, reorganization, moratorium
or similar Laws affecting the rights of creditors generally and subject to general equity
principles.

          (c) No Violations; Consents and Approvals.

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               (i) Except for filings, permits, authorizations, consents and approvals as may be required
under, and other applicable requirements of, any applicable Antitrust Laws, neither the execution,
delivery or performance of this Agreement by the Parent or the Merger Sub nor the consummation by
them of the transactions contemplated hereby nor compliance by them with any of the provisions
hereof will directly or indirectly (with or without notice or lapse of time or both): (i)
contravene, conflict with or result in a violation of (A) any provision of the charter, by-laws or
other organizational document of the Parent or the Merger Sub, or (B) any resolution adopted by the
board of directors or the stockholders of the Parent or the Merger Sub; (ii) contravene, conflict
with, or result in a violation of, or give any Governmental Entity or other Person the right to
exercise any remedy or obtain any relief under, any governmental regulation or any order,
injunction, writ or decree to which the Parent or the Merger Sub, or any of the respective assets
owned or used by each of them, may be subject, or (iii) require a consent, approval, ratification,
permission, order or authorization from any Person; except, in the case of clauses (ii) and (iii),
for any such conflicts, violations, breaches, defaults or other occurrences that would not prevent
or impair the ability of the Parent or the Merger Sub from consummating the transactions
contemplated hereby in any material respect, or otherwise prevent the Parent or the Merger Sub from
exercising their respective rights under this Agreement in any material respect.

               (ii) The execution and delivery of this Agreement by the Parent and the Merger Sub does not,
and the performance of this Agreement and the consummation of the transactions contemplated hereby
will not, require any consent, approval, license, permit, order, declaration or authorization of,
or registration or filing with or notification to, any Governmental Entity, except (i) for the
pre-merger notification requirements of applicable Antitrust Laws, and (ii) where failure to obtain
such consent, approval, license, permit, order, declaration, authorization or registration, or to
make such filings or notifications, would not prevent or impair the ability of the Parent or the
Merger Sub from consummating the transactions contemplated hereby in any material respect, or
otherwise prevent the Parent or the Merger Sub from exercising their respective rights under this
Agreement in any material respect.

     4. Further Agreement of the Stockholders. The Stockholder hereby authorizes and
requests the Company’s counsel to notify the Company’s transfer agent that there is a stop transfer
order with respect to all of the Covered Shares (and that this Agreement places limits on the
voting of the Covered Shares). The Stockholder agrees with, and covenants to, the Parent that the
Stockholder shall not request that the Company register the transfer (book-entry or otherwise) of
any certificate or uncertificated interest representing any of the Covered Shares, unless such
transfer is made in compliance with this Agreement. In the event of a stock dividend or
distribution, or any change in any of the Covered Shares by reason of any stock dividend or
distribution, or any change in any of the Covered Shares by reason of any stock dividend, split-up,
recapitalization, combination, exchange of shares or the like, the term “Covered Shares” shall be
deemed to refer to and include the Covered Shares as well as all such stock dividends and
distributions and any shares into which or for which any or all of the Covered Shares may be
changed or exchanged; provided, however, that in no event shall the Covered Shares, as adjusted by
reason of any stock dividend, distribution, split-up, recapitalization, combination, exchange of

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shares or the like, exceed 19.99% of the voting power (as such term is used in Chapter 1701 of
the Ohio Revised Code) of the Company.

     5. Further Assurances. From time to time prior to the Closing, at any other party’s
request and without further consideration, each party hereto shall execute and deliver such
additional documents and take all such further lawful action as may be necessary or desirable to
consummate and make effective, in the most expeditious manner practicable, the transactions
contemplated by this Agreement. Without limiting the generality of the foregoing, each party
hereto shall cooperate with the other parties hereto in preparing and filing any notifications
required under any applicable Antitrust Laws in connection with the transactions contemplated
hereby.

     6. Termination. The obligations of the parties under this Agreement shall terminate
upon the earliest to occur of (a) the Effective Time, (b) the termination of the Merger Agreement
in accordance with its terms and (c) at the option of the Stockholder, the execution or granting of
any amendment, modification, change or waiver with respect to the Merger Agreement subsequent to
the date of this Agreement that results in any decrease in the price to be paid per share for the
Common Shares and/or Class B Common Shares or any changes in the form of consideration to be
received by the holders of such shares in the Merger or is otherwise adverse to the stockholders of
the Company. Nothing in this Section 6 shall relieve any party of liability for failure to perform
its covenants under this Agreement.

     7. Costs and Expenses. All costs and expenses incurred in connection with this
Agreement and the consummation of the transactions contemplated hereby shall be paid by the party
incurring such expenses.

     8. Amendment and Modification. This Agreement may be amended, modified and
supplemented in any and all respects only by written agreement of the parties hereto.

     9. Notices. All notices and other communications hereunder shall be in writing and
shall be deemed given if delivered personally, telecopied (which is confirmed) or sent by an
overnight courier service (providing proof of delivery) to the parties at the following addresses
(or at such other address for a party as it may specify by like notice):

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            (i) if to the Parent or the Merger Sub, to:

Danaher Corporation

2099 Pennsylvania Avenue, 12th Floor

Washington, DC 20006-1813

Attention: Chief Counsel, Mergers & Acquisitions

Facsimile: (202) 828-0860

with a copy to:

Skadden, Arps, Slate, Meagher & Flom LLP

Four Times Square

New York, NY 10036

Attn: Joseph A. Coco, Esq.

Thomas W. Greenberg, Esq.

Facsimile: (212) 735-2000

            (ii) if to the Stockholder, to the address(es) set forth on Schedule A hereto.

     10. Interpretation. When a reference is made in this Agreement to Sections, such
reference shall be to a Section of this Agreement unless otherwise indicated. Whenever the words
“include,” “includes” or “including” are used in this Agreement they shall be deemed to be followed
by the words “without limitation.” The phrases “the date of this Agreement,” “the date hereof,”
and terms of similar import, unless the context otherwise requires, shall be deemed to refer to
September 29, 2010.

     11. Counterparts. This Agreement may be executed in two or more counterparts, all of
which shall be considered one and the same agreement and shall become effective when two or more
counterparts have been signed by each of the parties and delivered to the other parties, it being
understood that all parties need not sign the same counterpart.

     12. Entire Agreement; No Third Party Beneficiaries. This Agreement constitutes the
entire agreement and supersedes all prior agreements and understandings, both written and oral,
among the parties with respect to the subject matter hereof, and is not intended to confer upon any
person other than the parties hereto any rights or remedies hereunder.

     13. Severability. If any term or other provision of this Agreement is invalid,
illegal or incapable of being enforced by any rule of law, or public policy, all other conditions
and provisions of this Agreement shall nevertheless remain in full force and effect so long as the
economic or legal substance of the transactions contemplated hereby is not affected in any manner
materially adverse to any party.

          All rights, powers and remedies provided under this Agreement or otherwise available in
respect hereof at law or in equity shall be cumulative and not alternative, and the

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exercise of any thereof by any party shall not preclude the simultaneous or later exercise of
any other such right, power or remedy by such party.

     14. Governing Law. This Agreement shall be governed and construed in accordance with
the laws of the State of Ohio without giving effect to the principles of conflicts of law thereof.

     15. Assignment. Neither this Agreement nor any of the rights, interests or
obligations hereunder shall be assigned by any of the parties hereto (whether by operation of law
or otherwise) without the prior written consent of the other parties, except that the Parent and
the Merger Sub may assign, in the Parent’s sole discretion, any or all of their respective rights,
interests and obligations hereunder to any direct or indirect wholly owned Subsidiary of the
Parent; provided, however, that no such assignment shall relieve the Parent from any of its
obligations hereunder. Subject to the preceding sentence, this Agreement will be binding upon,
inure to the benefit of and be enforceable by the parties and their respective successors
(including the Company as successor to the Merger Sub pursuant to the Merger), heirs, agents,
representatives, trust beneficiaries, attorneys, affiliates and associates and all of their
respective predecessors, successors, permitted assigns, heirs, executors and administrators.

     16. Consent to Jurisdiction; Waiver of Jury Trial; Specific Performance.

          (a) In any action or proceeding between any of the parties arising out of or relating to this
Agreement or any of the transactions contemplated by this Agreement, each of the parties: (a)
irrevocably and unconditionally consents and submits to the exclusive jurisdiction and venue of the
federal or state courts located in Cleveland, Ohio, and (b) agrees that all claims in respect of
such action or proceeding may be heard and determined exclusively in such courts.

          (b) EACH PARTY HERETO HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES TRIAL BY JURY IN ANY LEGAL
ACTION OR PROCEEDING IN RELATION TO THIS AGREEMENT AND FOR ANY COUNTERCLAIM THEREIN.

          (c) The parties acknowledge and agree that the Parent, the Merger Sub and the Stockholder
would be irreparably damaged if any of the provisions of this Agreement are not performed in
accordance with their specific terms and that any breach of this Agreement could not be adequately
compensated in all cases by monetary damages alone. Accordingly, in addition to any other right or
remedy to which the Parent, the Merger Sub or the Stockholder may be entitled, at law or in equity,
it shall be entitled to enforce any provision of this Agreement by a decree of specific performance
and temporary, preliminary and permanent injunctive relief to prevent breaches or threatened
breaches of any of the provisions of this Agreement, without posting any bond or other undertaking.

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[Remainder of Page Intentionally Left Blank]

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          IN WITNESS WHEREOF, the Parent, the Merger Sub and the Stockholder have caused this Agreement
to be signed by their respective officers or other authorized person thereunto duly authorized as
of the date first written above.

	 	 	 	 	 
	 	KEITHLEY INVESTMENT CO. LIMITED PARTNERSHIP

 
	 	By:  	/s/ Joseph P. Keithley
 	 
	 	 	Name:  	Joseph P. Keithley 	 
	 	 	Title:  	General Partner 	 
	 
	 	DANAHER CORPORATION

 	 
	 	By:  	/s/ Daniel A. Raskas
 	 
	 	 	Name:  	Daniel A. Raskas 	 
	 	 	Title:  	Senior Vice President — Corporate Development 
	 
	 	AEGEAN ACQUISITION CORP.

 	 
	 	By:  	/s/ Daniel A. Raskas
 	 
	 	 	Name:  	Daniel A. Raskas 	 
	 	 	Title:  	Vice President	 
	 

 

Schedule A

Number of Owned Shares: 0 Common Shares; 1,954,816 Class B Common Shares.

Description of any warrants, options or other rights to purchase voting securities of the Company:

None

Address(es) for notices and other communications pursuant to Section 9 of the Agreement

Keithley Investment Co. Limited Partnership

28775 Aurora Road

Solon, OH 44139

Attention:       Joseph P. Keithley, General Partner

Facsimile:       (440) 542-8007

with a copy to:

Jones Day

North Point

901 Lakeside Avenue

Cleveland, Ohio 44114

Attention: James P. Dougherty

Facsimile: 216-579-0212exv10w2

Exhibit 10.2

AMENDED AND RESTATED

EMPLOYMENT AGREEMENT

     This AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this “Agreement”) is entered into on this 29th
day of September, 2010 (the “Effective Date”) by and between Keithley Instruments, Inc., an Ohio
corporation (the “Company”), and Mark J. Plush (the “Employee”).

RECITALS

     WHEREAS, the Company and the Employee are party to that certain Employment Agreement dated
April 7, 1994 (the “Original Employment Agreement”), which was amended by the Amendment to
Employment Agreement dated December 31, 2008 (the “Amendment” and, as amended the “Amended
Agreement”); and

     WHEREAS, the Company and the Employee desire to further amend the Amended Agreement to provide
for certain additional terms and to restate the Amended Agreement to incorporate the Amendment and
these additional terms;

     NOW, THEREFORE, the Amended Agreement is hereby amended and restated in its entirety as set
forth below, effective as of the date hereof:

I. Term of Agreement

     A. General

          The term of this Agreement commenced on April 7, 1994 and shall continue through and including
April 7, 2011, unless sooner terminated pursuant to Section VI or XIV hereof. After the original
term, the Agreement is renewable automatically for successive one

 

year terms unless either party gives the other party written notice of non-renewal at least
thirty (30) days before the end of the term of the Agreement.

     B. Change of Control

In the event that Joseph P. Keithley and/or trusts or partnerships of which Mr. Keithley is a
trustee or partner cease to have more than fifty percent (50%) of the voting power of the Company’s
voting stock (“Change of Control”) during the term of this Agreement, as set forth above, the term
of this Agreement shall be extended so that the term shall not end prior to thirty-six (36) months
following the date of the Change of Control.

II. Responsibility

          It is agreed that the Employee is hereby employed by the Company with responsibility to
perform such duties, consistent with his position, as shall be assigned to him by the Chief
Executive Officer or Board of Directors of the Company.

III. Accountability

          It is agreed that in exercising his responsibilities, the Employee will be accountable to the
Company’s Board of Directors and its Chief Executive Officer. The Employee agrees to: (i) devote
his business time and efforts full-time to the affairs of the Company and its affiliates, and (ii)
use his best efforts to promote the interests of the Company and its affiliates.

IV. Remuneration

     A. Base Salary

          The Employee will be employed beginning on the Effective Date and during the term of this
Agreement continuing thereafter at an annual base salary of not less than $255,000, paid on a
monthly basis. This base salary may be increased, but not decreased, without the

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Employee’s consent, at the discretion of the Compensation Committee of the Board of Directors
of the Company.

     B. Additional Compensation

          The Employee shall be eligible to participate in incentive, stock option, profit-sharing,
annual cash bonus, deferred compensation and similar plans maintained by the Company for the
benefit of its executives.

V. Other Employee Fringe Benefits

          The Employee shall be included to the extent eligible thereunder (at the expense of the
Company, if provided at Company expense for other executives of the Company with a comparable level
of responsibility) under any and all existing plans or arrangements (and any plans or arrangements
which may be adopted) providing benefits for its employees, including but not limited to group life
insurance, hospitalization, medical, pension, automobile, financial services and any and all other
similar or comparable benefits as may be in effect for other executives of the Company with a
comparable level of responsibility from time to time during the term of this Agreement. Additional
or improved fringe benefits are to be calculated for and awarded to the Employee in at least as
beneficial a manner as they are calculated for and awarded to such other executives.

          Nothing in this Agreement shall adversely affect the rights of the Employee or his
beneficiaries under the present or any future retirement, profit-sharing, insurance, or other
fringe benefit or compensation plans or arrangements which the Company now has or may adopt for its
employees, and no rights of the Employee thereunder shall be forfeited by any action set forth in
this Agreement unless so provided in such plans or arrangements.

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VI. Termination of Employment

     A. Death

          If the Employee shall die during the term of this Agreement, the duties of the Company and the
Employee, one to the other, under this Agreement shall terminate as of the date of the Employee’s
death. Notwithstanding the sentence immediately preceding, the death of the Employee shall not
adversely affect the rights of his beneficiaries to any benefits under the Company’s employee
benefit plans or arrangements in which he may be a participant, in accordance with the terms
thereof, including but not limited to those referred to in Section VI(F) hereof.

     B. Disability

          If the Employee shall become disabled for purposes of the Company’s long-term disability
program during the term of this Agreement the duties of the Company and the Employee, one to the
other, under this Agreement shall terminate as of the date the Employee is determined to be
disabled. Notwithstanding the sentence immediately preceding, the disability of the Employee shall
not adversely affect his rights to any benefits under the Company’s employee benefit plans or
arrangements in which he may be a participant, in accordance with the provisions thereof, including
but not limited to those referred to in Section VI(F) hereof.

     C. Resignation

          i. If the Employee voluntarily leaves the employ of the Company during the term of this
Agreement for any reason, other than Good Reason (as defined below) at the effective time of or
following a Change of Control, the duties of the Company and the Employee, one to the other, under
this Agreement shall terminate as of the date of the Employee’s termination of employment.
Notwithstanding the sentence immediately preceding, such voluntary termination of employment by the
Employee shall not adversely affect his rights to any

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benefits under the Company’s employee benefit plans or arrangements in which he may be a
participant, in accordance with the provisions thereof, including but not limited to those referred
to in Section VI(F) hereof.

          ii. If the Employee voluntarily leaves the employ of the Company for Good Reason at the
effective time of or following a Change of Control, the Company shall provide the Employee with the
benefits hereinafter specified in accordance with the terms hereof. Notwithstanding the sentence
immediately preceding, such voluntary termination of employment by the Employee shall not adversely
affect his rights to any benefits under the Company’s employee benefit plans or arrangements in
which he may be a participant, in accordance with the provisions thereof, including but not limited
to those referred to in Section VI(F) hereof.

          As used herein the words “Good Reason” shall be deemed to mean the Employee’s termination of
his employment from the Company upon or within six months after one or more of the following occurs
without the consent of the Employee (which consent the Employee shall be under no obligation to
give):

               (a) a significant diminution in the Employee’s responsibilities, power or authority in
comparison with the responsibilities, power or authority the Employee had at or about the time of
the Change of Control, other than any diminution in the Employee’s responsibilities solely as a
result of the fact that the entity for which the Employee is providing services no longer has
securities that are listed or publicly traded (such as the elimination of any responsibility for
Securities and Exchange Commission reporting or investor relations activities);

               (b) the assignment of the Employee to duties that are inconsistent with the duties assigned to
the Employee on the date on which the Change of Control occurred, and

5

 

which duties the Company persists in assigning to the Employee for a period of fifteen days
following the prompt written objection of the Employee;

               (c) (I) a material reduction in the Employee’s base salary or incentive or bonus opportunity
as a percentage of base salary, (II) a material reduction in the aggregate value of equity grants
under the Company’s equity-based award plans or any substitute therefor (using the same methodology
for valuing equity grants as the Compensation and Human Resources Committee of the Company’s Board
of Directors used for the equity grants most recently awarded to the Employee as of the date of the
Change in Control), (III) a material reduction in group health, life, disability or other insurance
programs (including any such benefits provided to the Employee’s family) or pension, retirement or
profit-sharing plan benefits (other than pursuant to a general amendment or modification affecting
all plan-covered employees), (IV) the establishment of criteria or factors to be achieved for the
payment of incentive or bonus compensation that are substantially more difficult than the criteria
or factors established for other similar executive officers or key employees of the Company, (V)
the failure to promptly pay the Employee any incentive or bonus compensation to which the Employee
is entitled through the achievement of the criteria or factors established for the payment of such
incentive or bonus compensation, (VI) the exclusion of the Employee from any plan, program or
arrangement in which similarly situated executives or key employees of the Company are included, or
(VII) a material breach by the Company of the terms of this Agreement or any other material written
agreement between the Company and the Employee, except to the extent that the nature of such breach
is covered in another section of this “Good Reason” definition;

               (d) the Company requires the Employee to be based at or generally work from any location more
than fifty (50) miles from the Company’s headquarters in Solon,

6

 

Ohio or the Company, over the course of any calendar month, requires the Employee to be away
from the Company’s headquarters in Solon, Ohio for more than 50% of the business days during that
month; or

               (e) the failure of any successor to the Company to expressly adopt this Agreement.

     D. Termination by Company

          The Company may terminate the Employee’s employment at any time, without cause, subject to
providing the benefits hereinafter specified in accordance with the terms hereof. The Company may
terminate the Employee’s employment at any time “For Cause”. In the event the Company shall
terminate the Employee’s employment For Cause, the duties of the Company and the Employee, one to
the other, under this Agreement shall terminate as of the date of the Employee’s termination of
employment. Notwithstanding the sentence immediately preceding, such termination of employment of
the Employee by the Company For Cause shall not adversely affect his rights to any benefits under
the Company’s employee benefit plans or arrangements in which he may be a participant, in
accordance with the provisions thereof, including but not limited to those referred to in Section
VI(F) hereof.

          As used herein the words “For Cause” shall be deemed to mean and include (i) the Employee’s
conviction of either a felony involving moral turpitude or any crime in connection with his
employment by the Company which causes the Company or any affiliated company a substantial
detriment; or (ii) the Employee’s refusal to submit to a medical examination if directed to do so
by the Board to determine whether the Employee is disabled under subsection VI(B) hereof; or (iii)
the Employee’s willful failure to take actions permitted by law and necessary to implement policies
of the Board which the Board has communicated to him in writing, provided that minutes of a Board
meeting attended in its entirety by the Employee

7

 

shall be deemed communicated to the Employee; or (iv) the Employee’s continued failure to
perform his duties as an executive officer of the Company as set forth in the attached job
description (provided that the Employee’s competence in such performance shall be irrelevant); or
(v) any condition which either resulted from the Employee’s habitual drunkenness or addiction to
narcotics, or resulted from any intentionally self-inflicted injury; or (vi) acting in breach or
contravention of any material obligation, covenant or agreement of the Employee contained in this
Agreement, expressly including without limitation, the non-competition and non-solicitation
covenants set forth in Section X hereof or the provisions of the “Employee Agreement” or any
similar agreement regarding confidentiality.

     E. Notice of Termination

          Any termination of the Employee’s employment by the Company or by the Employee shall be
communicated by written Notice of Termination to the other party hereto which notice shall set
forth the effective date of such termination which shall not be earlier than the date of mailing,
or delivery by other means, of the notice.

     F. Continuation of Employee Benefits

          The death, disability or termination of employment of the Employee, whether or not voluntary
and whether or not For Cause or Good Reason shall not result in the loss by the Employee or his
beneficiaries of any benefits under any life insurance, death benefit, pension, profit sharing,
stock option, medical, deferred compensation or other employee benefit plan or arrangement except
as provided for in such plan or arrangement.

VII. Compensation Upon Involuntary Termination Other Than For Cause

          Except as provided in Section VIII hereof, if the Employee’s employment with the Company shall
be terminated, during the term of this Agreement, by the Company other than For Cause, then the
Employee shall be entitled to the benefits provided below:

8

 

	 	i.	 	the Company shall pay the Employee, on a monthly basis, his
full monthly base salary determined as of the date of his termination of
employment, for six months following his termination of employment, or one
month following his termination of employment for each full year of his service
with the Company, whichever is greater, up to a maximum of eighteen (18)
months;
	 
	 	ii.	 	full participation in the annual Extra Compensation Plan if his
termination of employment is on or subsequent to June 30 of the respective
fiscal year;
	 
	 	iii.	 	full participation in any performance award if the performance
measuring period ends within six months following his termination of
employment;
	 
	 	iv.	 	the choice of exercising all vested stock options up to thirty
days after his termination of employment, provided this provision shall not
extend the term of his options beyond their terms as initially granted, and the
Company agrees to request the Compensation Committee of its Board of Directors
to permit such exercise pursuant to Section 6(g) of the Keithley Instruments,
Inc. 1984 Stock Option Plan or the comparable provision of any future plan;
	 
	 	v.	 	the Employee shall be deemed to have vested in his stock, if
any, acquired under the Company’s restricted stock plan at a rate of 20% per
year of service subsequent to the date of sale of such stock to the Employee;
	 
	 	vi.	 	the Company shall maintain in full force and effect, following
the termination of the Employee’s employment for six-months following such
termination of employment or for one month following his termination of
employment for each full year of his service with the Company, whichever is
greater, up to a maximum of eighteen (18) months, all employee fringe benefit
plans and arrangements in which he was entitled to participate immediately
prior to the date of the Notice of Termination, provided that if such continued
coverage would jeopardize the tax qualified status of such plan or arrangement
with respect to any other employee or the Company the Company may elect to
provide the said benefit on an individual basis or provide cash compensation
equivalent to the benefit which otherwise would have been provided so that the
Employee shall suffer no financial loss whatsoever due to such substitution;
	 
	 	vii.	 	in addition to the retirement benefits to which the Employee is
entitled under the Company’s Employees’ Pension Plan, as amended from time to
time (the “Pension Plan”), the Company shall pay a supplemental retirement
benefit hereunder, which benefit (except as provided below) shall be determined
in accordance with, and payable in the same form and at the same times provided
in, the Pension Plan. Such benefit shall equal (a) minus (b) below where:

9

 

	 	(a)	 	equals the benefit to which the Employee would
be entitled under the Pension Plan if:

	 	(I)	 	he were fully vested;
	 
	 	(II)	 	his “compensation”, as that word
is defined in the Pension Plan, were, at all times while he was
a participant in said Pension Plan, equal to the annual amount
of such compensation for that Company fiscal year from among the
final three (3) Company fiscal years ending prior to his
termination of employment for which said compensation was the
highest;
	 
	 	(III)	 	his “1977 monthly compensation”,
“1983 monthly compensation” and any similar updated monthly
compensation were calculated by dividing his “compensation”, as
defined in Section VII, (vii), (a), (II) above, by twelve (12);
and
	 
	 	(IV)	 	he was credited with his actual
years of “credited service” as determined under the Pension
Plan; and

	 	(b)	 	equals the Employee’s actual benefit payable
under the Pension Plan; and

	 	viii.	 	reimbursement of fees for outplacement services actually used
to the extent approved by the Chief Executive Officer in his sole discretion,
but not in excess of $10,000.

	VIII.	 	Compensation Upon Involuntary Termination Other Than For Cause or Voluntary Termination
for Good Reason following a Change of Control

               If at the effective time of or following a Change of Control, the Employee’s employment with
the Company shall be terminated (a “Triggering Event”) (a) by the Company other than For Cause, or
(b) by the Employee for Good Reason, then the Employee shall be entitled to the benefits provided
below, and to the extent such benefits call for a lump sum cash payment, the payment of such
benefits shall be made in one lump sum cash payment on or about the ninetieth (90th) day after the
Triggering Event, subject, however, to Section IX:

	 	i.	 	the Company shall pay the Employee an amount equal to 1.5 times
Employee’s Annual Salary in equal monthly installments over a period of
twenty-four (24) months; “Employee’s Annual Salary” means the

10

 

	 	 	 	Employee’s annual base salary at the time of a Triggering Event or at the
time of the Change of Control, whichever is higher;

	 	ii.	 	full participation in the annual Extra Compensation Plan if his
termination of employment is on or subsequent to June 30 of the respective
fiscal year;
	 
	 	iii.	 	except as provided in subsection (iv) below, the awards granted
to the Employee under the Company’s 1992 Stock Incentive Plan and 2002 Stock
Incentive Plan, as amended (collectively, the “Plans” and each, a “Plan”) shall
be treated in the manner provided in the applicable Plan and award agreements
thereunder, including with respect to those awards outstanding immediately
prior to a “Change of Control” as defined in the applicable Plan, becoming
fully vested and, in the case of stock options, fully exercisable, upon such
Change of Control (as defined in the applicable Plan);
	 
	 	iv.	 	the number of common shares of the Company that the Employee
shall be entitled to receive under the performance award units granted to the
Employee under the Plans and the fiscal years 2010 through 2012 award program
that are outstanding immediately prior to the Change of Control (as defined in
the applicable Plan) that occurs prior to the Vesting Date (as defined in the
applicable Performance Award Agreement) shall be determined based on the
greater of (i) the Initial Award set forth in the Performance Award Agreement
or (ii) the number of shares that the Employee would be entitled to receive if
the Company’s actual performance through the date of a Change of Control (as
defined in the applicable Plan) event was deemed to have occurred at the
Vesting Date, but not in excess of 1.5 times the Initial Award level;
	 
	 	v.	 	the Company shall maintain in full force and effect, following
the Triggering Event for eighteen (18) months, all employee fringe benefit
plans and arrangements other than life, medical, hospitalization, vision,
dental/health plans (which are addressed in subsection (vi) below) in which he
was entitled to participate immediately prior to the date of the Notice of
Termination, provided that if such continued coverage would jeopardize the tax
qualified status of such plan or arrangement with respect to any other employee
or the Company the Company may elect to provide the said benefit on an
individual basis or provide cash compensation equivalent to the benefit which
otherwise would have been provided so that the Employee shall suffer no
financial loss whatsoever due to such substitution;
	 
	 	vi.	 	the Company shall, at its expense, provide for the Employee,
and the Employee’s family, to participate in the life, medical,
hospitalization, vision, and dental/health plans and programs that the Company
or its successor maintains during the Term (the “Company Health and Welfare
Benefits”) on the same basis as other full-time salaried employees of the

11

 

	 	 	 	Company or its successor who participate in such benefit plans and programs
and providing for coverage in an amount not less than that provided on the
date on which the Change in Control occurred, until the earlier of (i) in
the event that the Employee shall become employed by another employer after
a Triggering Event, the date on which the Employee shall be eligible to
receive benefits from such employer which are substantially equivalent to or
greater than the benefits the Employee and the Employee’s family received
from the Company or (ii) the twenty-four (24) month anniversary of the
Triggering Event (such period, the “Benefits Continuation Period”);
provided, however, that if the Employee’s continuation in some or all of the
Company Health and Welfare Benefits is not available, then the Company shall
make monthly payments to the Employee for each month during the Benefits
Continuation Period for which such Company Health and Welfare Benefits are
not available equal to the actual cost to the Employee on a pre-tax basis,
of the coverage for such Employee, with respect to those benefits among the
Company Health and Welfare Benefits not available. To the extent permitted
by law and the applicable benefit plan, the Company’s health insurance
continuation obligation otherwise available under the COBRA rules will begin
to run at the expiration of the period for which the Company Health and
Welfare Benefits are provided to the Employee under this subsection (vi).

	 	vii.	 	In addition to the retirement benefits to which the Employee is
entitled under the Company’s Employees’ Pension Plan, as amended from time to
time (the “Pension Plan”), the Company shall pay a supplemental retirement
benefit hereunder, which benefit (except as provided below) shall be determined
in accordance with, and payable in the same form and at the same times provided
in, the Pension Plan. Such benefit shall equal (a) minus (b) below where:

	 	(a)	 	equals the benefit to which the Employee would
be entitled under the Pension Plan if:

	 	(I)	 	he were fully vested;
	 
	 	(II)	 	his “compensation”, as that word
is defined in the Pension Plan, were, at all times while he was
a participant in said Pension Plan, equal to the annual amount
of such compensation for that Company fiscal year from among the
final three (3) Company fiscal years ending prior to his
termination of employment for which said compensation was the
highest;
	 
	 	(III)	 	his “1977 monthly compensation”,
“1983 monthly compensation” and any similar updated monthly
compensation were calculated by dividing his

12

 

	 	 	 	“compensation”, as defined in Section VII, (vii), (a), (II)
above, by twelve (12); and

	 	(IV)	 	he was credited with his actual
years of “credited service” as determined under the Pension
Plan; and

	 	(b)	 	equals the Employee’s actual benefit payable
under the Pension Plan; and

	 	viii.	 	reimbursement of fees for outplacement services actually used
to the extent approved by the Chief Executive Officer in his sole discretion,
but not in excess of $10,000.

IX. Certain Payment Restrictions, To Comply With Section 409A.

          Notwithstanding the provisions of Section VII or VIII hereof, the following restrictions shall
be imposed upon certain of the payment and reimbursement rights creating or arising thereunder to
conform such payment and reimbursement rights to the requirements imposed by Section 409A the
Internal Revenue Code of 1986, as amended (the “Code”), and related rulings and regulations (“Code
Section 409A”):

	 	i.	 	A termination of employment by the Company or the Employee
shall entitle the Employee to receive the payment(s) and rights identified in
Section VII and Section VIII hereof (as modified by the provisions of this
Section IX) only if and when such termination of employment also constitutes a
“Separation from Service” (as defined under Code Section 409A and related
regulations) from the Company and all those corporations which are part of the
controlled group of corporations of which the Company is a member (within the
meaning of Code Section 414(b) and related regulations), and all those
non-corporate entities which are under common control with the Company (within
the meaning of Code Section 414(c) and related regulations) (collectively, the
“Related Companies”).
	 
	 	ii.	 	In the event the Employee qualifies as a “Specified Employee”
(as herein defined) on the date such Employee’s Separation from Service occurs,
any payment otherwise scheduled to be paid to the Employee under Section VII or
Section VIII hereof prior to the expiration of six (6) months following the
date of such Employee’s Separation from Service from the Company and all
Related Companies (as defined in this Section IX) shall be held by the Company,
and paid to the Employee (or in the event of his intervening death, to his
estate) in a single sum on the first business day following the expiration of
such six (6) month period, except as set forth in Section (IX)(iv) below.

13

 

	 	 	 	For this purpose, an employee qualifies as a “Specified Employee” if, as of
the date of his Separation from Service, he is a “key employee” of the
Company or any Related Company and the Company’s stock (or the stock of any
Related Company) is publicly traded on an established securities market. An
employee is a key employee if he or she meets the requirements of Code
Section 416(i)(1)(A)(i), (ii), or (iii) (applied in accordance with the
regulations thereunder and disregarding Section 416(i)(5)) at any time
during a given 12-month period commencing on January 1st and
ending on the ensuing December 31st. In the event the employee
qualifies as a key employee during such calendar year period, he shall
qualify as a Specified Employee throughout the 12-month period commencing on
the April 1st next following the close of such calendar year
period and ending on the ensuing March 31st. For this purpose,
the Employee’s compensation (used to determine whether he is a “key
employee”) shall be determined using the definition of compensation provided
under Treasury Regulation Section 1.415(c)-2(a).

	 	iii.	 	Any reimbursement for fringe benefits and arrangements or
Company Health and Welfare Benefits that needs to be made to the Employee in
accordance with subsection VII(vi), subsection VIII(v) and subsection VIII(vi)
hereof, shall be made on or before the last day of the Employee’s taxable year
following the taxable year in which such expense was incurred; any cash
compensation becoming due and payable to the Employee in accordance with
subsection VII(vi), subsection VIII(v) and subsection VIII(vi) hereof shall be
made on or before the last day of the Employee’s taxable year in which the
Employee acquires the right to receive such cash compensation. Any such
reimbursement or compensation shall be paid to the Employee (or in the event of
his intervening death, to his estate).
	 
	 	iv.	 	Payment to the Employee of the supplemental retirement benefit
described in subsection VII(vii) or subsection VIII(vii) hereof shall take the
form of a single life annuity, commencing on the later of (I) the first day of
the first calendar month next following such Employee’s Separation from Service
from the Company and all Related Companies, or (II) the first day of the first
calendar month following the Employee’s sixty-fifth (65th) birthday;
provided, that if the Employee is a Specified Employee on the date his
Separation from Service occurs (as herein defined), any monthly payments
otherwise payable to such Employee during the six (6) month period commencing
on the date of such Employee’s Separation from Service shall be withheld by the
Company and paid to the Employee (or in the event of his intervening death, to
his estate) on the on the first business day following the expiration of such
six (6) month period following the date of his Separation from Service. Any
adjustments in the timing or the form of payment, needed to conform the
Employee’s supplemental retirement benefit described in subsection VII(vii) or
subsection VIII(vii) hereof to the preceding sentence, shall employ the
actuarial factors used

14

 

	 	 	 	under the Pension Plan to pay different types of annuities (determined as of
the date the Employee’s Pension Plan benefits commence).

	 	v.	 	Any Company reimbursement of the Employee’s outplacement
expenses in accordance with subsection VII(viii) or subsection VIII(viii)
hereof shall be made on or before the last day of the Employee’s taxable year
following the taxable year in which such expenses were incurred. Any such
reimbursement shall be paid to the Employee (or in the event of his intervening
death, to his estate).
	 
	 	vi.	 	For purposes of Code Section 409A Code, each payment of
compensation under the Agreement shall be treated as a separate payment of
compensation. Any amounts payable solely on account of an involuntary
termination shall be excludible from the requirements of Code Section 409A,
either as separation pay or as short-term deferrals, or both, to the maximum
possible extent. To the extent that the amount of payments set forth in
Section VII(i), after application of the foregoing, would constitute deferred
compensation subject to the requirements of Code Section 409A that, because of
the provisions of Section VIII hereof, would violate one or more provisions of
Code Section 409A, the amount of such payments shall be reduced to the maximum
amount that can be paid without causing such payments to become subject to Code
Section 409A.

          Nothing in this Agreement shall be construed as amending any compensation or fringe benefit
plan or arrangement of the Company. All rights of the Employee under any such plan or arrangement
upon his termination of employment must be determined under the terms of such plans or arrangements
at the time of the Employee’s termination of employment.

X. Covenant Not To Compete

          The Employee agrees that during his employment with the Company, and after his termination of
employment for as long as payments hereunder are made by the Company, the Employee shall remain in
full compliance with the following conditions:

	 	i.	 	He must not accept employment either directly or indirectly,
with any competitor of the Company.
	 
	 	ii.	 	He must not allow the use of his name by or in any competitive
business.
	 
	 	iii.	 	He must not employ for himself the services of any other
employee of the Company without the written permission of the Company.

15

 

	 	iv.	 	He must keep himself at all times reasonably available for
consultation by the officers and directors of the Company; provided that no
such consultation shall be required after the Employee attains age sixty-five
(65). In the event he is called upon to render any such substantial consulting
services, he shall receive additional compensation in a reasonable amount, and
any travel or other expenses which may be required in connection with such
services shall be paid by the Company.

          The Company shall make payments under this Agreement only so long as the Employee complies
with the above conditions except to the extent expressly waived in writing by the Board of
Directors. In the event that the Employee shall be determined to be guilty of violation of any of
the foregoing conditions by agreement or by the reasonable determination of the Board of Directors
and the Employee does not correct such violation within a reasonable time, as determined by the
Board after notice to him in writing, the Company may thereafter suspend or terminate in whole or
in part any further payments under this Agreement.

          This Agreement shall not be deemed to modify in any way any agreement between the Company and
the Employee concerning the protection of Company secrets.

XI. Dissolution, Merger or Consolidation

          If the Company shall at any time be merged or consolidated into or with any other corporation
or corporations or if substantially all the assets of the Company are sold or otherwise transferred
to another corporation or party, the provisions of this Agreement shall be binding upon and inure
to the benefit of the corporation surviving or resulting from such merger or consolidation or to
which such assets shall be sold or transferred, and this provision shall apply in the event of any
subsequent sale, merger, consolidation or transfer.

XII. Non-Assignability

          This Agreement shall be binding upon and inure to the benefit of the Parties hereto and to
their successors. The Employee may not assign, pledge or otherwise encumber any

16

 

rights or interests hereunder without the written consent of the Company. The Company may not
assign this Agreement other than as set forth in Section XI above.

XIII. Entire Agreement of the Parties

          This Agreement expresses the entire agreement of the parties, and all promises,
representations, understandings, arrangements and prior agreements are merged herein and superseded
hereby.

XIV. Amendments, Termination

          Except as herein provided, this Agreement cannot be terminated by unilateral action of either
party. However, this Agreement can be changed, modified or terminated by mutual written agreement.
No person, other than pursuant to a resolution of the Board of Directors of the Company (or the
Compensation and Human Resources Committee thereof), shall have any authority on behalf of the
Company to agree to modify, change or terminate this Agreement or anything in reference thereto,
and any such modification, change or termination must be in writing and signed by both parties.

XV. Laws Governing

          This Agreement has been entered into in the State of Ohio, and shall be construed, interpreted
and governed in accordance with the laws of the State of Ohio.

XVI. Code Section 409A Compliance

          This Agreement is intended to comply with the provisions of Code Section 409A and related
rulings and regulations (the “Section 409A Rules”). In the event that any provision of this
Agreement fails to satisfy the Section 409A Rules, such provision shall be modified so as to comply
with the Section 409A Rules while preserving as closely as possible the substantive rights of the
Company and the Employee hereunder. The Company, acting in its discretion, will identify any
further Agreement provisions that need to be modified to conform this Agreement to

17

 

the requirements imposed by the Section 409A Rules and notify the Employee of such
modifications and seek his consent thereto. However, the Company is not acting (and will not be
held to have acted) as a guarantor of the federal tax consequences of this Agreement, and in the
event that the Company determines that it is not feasible to modify a provision of this Agreement
to conform such provision to the Section 409A Rules, such provision shall be apply as theretofore
written without regard to the Section 409A Rules.

18

 

          IN WITNESS WHEREOF, the Company has caused this Agreement to be executed by its officers
thereunto duly authorized, and the Employee has hereunto set his hand, as of the day and year first
above written.

	 	 	 	 	 
	 	KEITHLEY INSTRUMENTS, INC.

 	 
	 	By:  	/s/ Joseph P. Keithley 	 
	 	 	Joseph P. Keithley 	 
	 	 	Chairman, Board of Directors and Chief
Executive Officer 

	 	 	 	 	 
	 	EMPLOYEE:
 	 
	 	/s/ Mark J. Plush 	 
	 	Mark J. Plush 	 
	 	 	 
	 

19

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