EX-10.22



 Exhibit 10.22 
 LIMELIGHT NETWORKS, INC. 
 GEORGE VONDERHAAR EMPLOYMENT AGREEMENT

 This Employment Agreement (the “Agreement”) is entered into as of January 22, 2013 (the “Signing
Date”), by and between Limelight Networks, Inc. (the “Company”) and George Vonderhaar (“Executive”). 

1. Duties and Scope of Employment. 
 (a) Positions and Duties. No later than February 28. 2013, Executive will commence service as the Company’s Chief Sales Officer (“CSO”). Executive will report to the
Company’s Chief Executive Officer (the “CEO”). The date on which Executive actually commences such service as the Company’s CSO shall be the “Effective Date.” As of the Effective Date, Executive will render such
business and professional services in the performance of his duties, consistent with Executive’s position within the Company, as will reasonably be assigned to him by the CEO. Without limiting the foregoing, Executive will be responsible for
managing all aspects of the global sales operations. Immediate goals include aligning the sales organization and personnel and designing and implementing sales plans, programs and initiatives that will demonstrably and measurably improve sales
growth and efficiency and reduce customer churn and dissatisfaction. The period Executive is employed by the Company under this Agreement is referred to herein as the “Employment Term.” In the event that Executive fails to begin full-time
employment with the Company by February 28, 2013, this Agreement and any equity awards to be granted pursuant to the terms hereof shall be null and void upon the date of such failure. Executive will maintain a home office in Cincinnati, Ohio,
but will spend such time in the Company’s San Francisco, California, Tempe, Arizona, Mountain View, California and San Diego, California offices, and will travel on Company business to such other locations and for such periods, as may be
necessary or appropriate to carry out his responsibilities or as may be directed by the Company’s CEO. It is anticipated that Executive will be present in the Company’s offices or at customer visits a significant portion of each business
week. 
 (b) Obligations. During the Employment Term, Executive, except as provided in this Agreement, will devote
Executive’s full business efforts and time to the Company and will use good faith efforts to discharge Executive’s obligations under this Agreement to the best of Executive’s ability and in accordance with each of the Company’s
written corporate guidance and ethics guidelines, conflict of interests policies, code of conduct and other policies and procedures as the Company may adopt from time to time. For the duration of the Employment Term, Executive agrees not to actively
engage in any other employment, occupation, or consulting activity for any direct or indirect remuneration without the prior approval of the CEO (which approval will not be unreasonably withheld); provided, however, that Executive may, without the
approval of the CEO, serve in any capacity with any civic, educational, professional, industry or charitable organization, provided such services do not interfere with Executive’s performance of his obligations to Company, are disclosed in
writing to the Company and are otherwise consistent with the Company’s policies. Subject to prior approval of the CEO and in appropriate cases (as determined by the Company) 

  
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approval of the Audit Committee of the Company’s board (which approval will not be unreasonably withheld) Executive may also serve on the board(s) of for-profit business associations
provided such participation does not interfere with Executive’s performance of his obligations to the Company, are disclosed in writing to the Company, are consistent with the terms of Executive’s employment with the Company (including
without limitation the restrictive covenants in the Confidential Information Agreement, as defined in Section 12 below) and are consistent with the Company’s policies (including without limitation the Company’s Code of Business
Conduct). 
 (i) Executive hereby represents, warrants and covenants to the Company that as of the Effective Time, Executive
will not be a party to any contract, understanding, agreement or policy, written or otherwise, that will be breached by Executive’s entering into, or performing services under, this Agreement. Executive further represents that he has disclosed
to the Company in writing all threatened, pending, or actual claims that are unresolved and still outstanding as of the Signing Date, in each case, against Executive of which he is aware, if any, as a result of his employment with any previous
employer or his membership on any boards of directors. 
 (c) Other Entities. Executive agrees to serve if appointed,
without additional compensation, as an officer and director for each of the Company’s subsidiaries, partnerships, joint ventures, limited liability companies and other affiliates, including entities in which the Company has a significant
investment as determined by the Company. As used in this Agreement, the term “affiliates” will mean any entity controlled by, controlling, or under common control of the Company. 

2. At-Will Employment. Executive and the Company agree that Executive’s employment with the Company constitutes
“at-will” employment. Executive and the Company acknowledge that this employment relationship may be terminated at any time, upon written notice to the other party, with or without good cause or for any or no cause, at the option either of
the Company or Executive. However, as described in this Agreement, Executive may be entitled to severance benefits depending upon the circumstances of Executive’s termination of employment. 

3. Compensation. 
 (a) Base Salary. Commencing with the Effective Date, the Company will pay Executive an annual salary of $275,000 as compensation for his services (such annual salary, as is then effective, to be
referred to herein as “Base Salary”). Executive’s Base Salary will be subject to annual review. The Base Salary will be paid periodically in accordance with the Company’s normal payroll practices and will be subject to the usual,
required withholdings. 
 (b) Annual Incentive. Executive will be eligible to receive annual cash incentives payable for
the achievement of performance goals established by the Board of Directors of the Company (the “Board”) or by the Compensation Committee of the Board (the “Committee”). During calendar year 2013, Executive’s target annual
incentive (“Target Annual Incentive”) will be $200,000. The Target Annual Incentive for 2013 shall be prorated for the portion of calendar year 2013 during which Executive is an employee of the Company. The actual earned annual cash
incentive, if any, payable to Executive for any performance period will depend upon the extent to which the applicable performance goal(s) specified by the Committee are achieved. Any annual cash


  
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incentives earned pursuant to this Section 3(b) will be paid to Executive as soon as reasonably practicable following the date on which such annual cash incentives are earned, but in no
event will be paid later than March 15 of the year following the year in which such annual cash incentives are earned. 

(c) Equity Awards. 
 (i) Subject to Committee approval, on the grant date set by the Committee, the Company will issue to Executive 200,000 Restricted Stock Units (“RSUs”) pursuant the Company’s 2007 Equity
Incentive Plan (the “Plan). The RSUs will be granted under and subject to the terms, definitions and provisions of the Plan. One-sixteenth (1/16th) will vest on June 1, 2013 and an additional one-sixteenth (1/16th) will vest on the first day of each September, December, March
and June thereafter, provided Executive continues to be a Service Provider through each such vesting date. 
 (ii) Subject to
Committee approval, on the grant date set by the Committee, the Company will issue to Executive an option to purchase 250,000 shares of the Company’s common stock (the “Options”) pursuant to the Plan. The Options will be granted under
and subject to the terms, definitions and provisions of the Plan. Twenty-five percent (25%) of the Options will vest on December 3, 2013, and the remaining seventy-five percent (75%) will vest in thirty-six (36) equal monthly
installments beginning January 3, 2014 and on the third day of each month thereafter for thirty-five (35) consecutive months, provided Executive continues to be a Service Provider through each such vesting date. 

(iii) Executive may from time to time be issued stock options, RSUs or other equity awards under the Plan or a successor plan. Such
awards together with the equity awards issued pursuant to this Agreement may be referred to in this Agreement as Equity Awards. 
 (iv) In the event that the Company consummates a Change of Control transaction, 50% of Executive’s then outstanding unvested Equity Awards will vest immediately. In the event Executive’s
employment is terminated in connection with a Change of Control, the balance of Executive’s then outstanding Equity Awards may vest as provided in Section 7(b) below. 

4. Employee Benefits. 
 (a) Generally. Executive will be eligible to participate in accordance with the terms of all Company employee benefit plans, policies and arrangements that are applicable to other officers of the
Company, as such plans, policies and arrangements may exist from time to time. 
 (b) Vacation. Executive will be
entitled to receive paid annual vacation in accordance with Company policy for other vice president level officers, but with vacation accrual of not less than five (5) weeks per year. 

5. Expenses. The Company will reimburse Executive for reasonable travel, entertainment and other business expenses, including
professional association fees, incurred by Executive in the furtherance of the performance of Executive’s duties hereunder. Executive is expected to travel frequently to the Company’s San Francisco, California, and Tempe, Arizona


  
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offices. All reimbursements to Executive by the Company pursuant to this Section 5 shall be in accordance with the Company’s expense reimbursement policy as in effect from time to time.
The Company will reimburse Executive up to $2,500 for legal fees incurred by Executive for reviewing this Agreement and advising Executive prior to signing this Agreement. 
 6. Termination of Employment. In the event Executive’s employment with the Company terminates for any reason, Executive will be entitled to any (a) unpaid Base Salary accrued up to the
effective date of termination; (b) unpaid, but earned and accrued annual incentive for any completed fiscal year as of his termination of employment; (c) pay for accrued but unused vacation; (d) benefits or compensation as provided
under the terms of any employee benefit and compensation agreements or plans applicable to Executive; (e) unreimbursed business expenses required to be reimbursed to Executive; and (f) rights to indemnification Executive may have under the
Company’s Certificate of Incorporation, Bylaws and this Agreement as applicable. In the event Executive’s employment with the Company terminates for any reason (other than Cause), Executive will be entitled to exercise any outstanding
vested stock options until the first to occur of: (i) the date that is six (6) months following the later of such termination of employment or the date upon which Executive ceases to be a Service Provider (as defined in the Plan),
(ii) the applicable scheduled expiration date of such award (in the absence of any termination of employment) as set forth in the award agreement, or (iii) the ten (10) year anniversary of the award’s original date of grant. For
purposes of clarity, the term “expiration date” shall be the scheduled expiration of the option agreement and not the period that Executive shall be entitled to exercise such option. In addition, if the termination is by the Company
without Cause, Executive will be entitled to the amounts and benefits specified in Section 7. 
 7. Severance.

 (a) Termination Without Cause or Resignation for Good Reason other than in Connection with a Change of Control. If
Executive’s employment is terminated by the Company without Cause or Executive terminates voluntarily for Good Reason and such termination is not in Connection with a Change of Control, then, subject to Section 8 and except as provided in
Section 7(e) below, Executive will receive: (i) continued payment of Executive’s Base Salary (subject to applicable tax withholdings) for twelve (12) months, such amounts to be paid in accordance with the Company’s normal
payroll policies; (ii) the payment in an amount equal to 100% of Executive’s Target Annual Incentive for the year in which the termination occurs (subject to applicable tax withholdings), such amounts to be paid in accordance with the
Company’s normal payroll policies over the course of twelve (12) months, and (iii) reimbursement for premiums paid for continued health benefits for Executive (and any eligible dependents) under the Company’s health plans until
the earlier of (A) twelve (12) months, payable when such premiums are due (provided Executive validly elects to continue coverage under the Consolidated Omnibus Budget Reconciliation Act (“COBRA”)), or (B) the date upon
which Executive and Executive’s eligible dependents become covered under similar plans. 
 (b) Termination Without Cause
or Resignation for Good Reason in Connection with a Change of Control. If Executive’s employment is terminated by the Company without Cause or Executive terminates voluntarily for Good Reason and the termination is in Connection with a
Change of Control, then, subject to Section 8, Executive will receive: (i) continued payment of 

  
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Executive’s Base Salary for the year in which the termination occurs (subject to applicable tax withholdings), for twelve (12) months, such amounts to be paid in accordance with the
Company’s normal payroll policies; (ii) the payment in an amount equal to 100% of Executive’s Target Annual Incentive for the year in which the termination occurs (subject to applicable tax withholdings), such amounts to be paid in
accordance with the Company’s normal payroll policies over the course of twelve (12) months; (iii) the actual earned cash incentive, if any, payable to Executive for the current year, pro-rated to the date of termination; (iv)100% of
Executive’s then outstanding unvested Equity Awards will vest, and (v) reimbursement for premiums paid for continued health benefits for Executive (and any eligible dependents) under the Company’s health plans until the earlier of
(A) twelve (12) months, payable when such premiums are due (provided Executive validly elects to continue coverage under COBRA), or (B) the date upon which Executive and Executive’s eligible dependents become covered under
similar plans. The amount of the cash incentive actually earned and payable under subsection (iii) will be determined by multiplying the Target Annual Incentive by (A) the percentage of the then current (as of the first day of the month
immediately preceding the date of termination) attainment of cash incentive metrics as a percentage of the then current target cash incentive metrics set in the applicable cash incentive plan for the current year (measured in the same manner as used
to calculate bonus accrual for financial accounting purposes), the product of which is then (B) multiplied by a fraction with a numerator equal to the number of days inclusive between the start of the current calendar year and the date of
termination and a denominator equal to 365. For purposes of clarity, the Compensation Committee of the Board of Directors shall determine, in good faith, the extent to which any cash incentive under subsection (iii) has been earned by Executive
and its decision will be conclusive. 
 (c) Voluntary Termination without Good Reason or Termination for Cause. If
Executive’s employment is terminated voluntarily without Good Reason or is terminated for Cause by the Company, then, except as provided in Section 6, (i) all further vesting of Executive’s outstanding Equity Awards will
terminate immediately and stock options shall be exercisable as provided in Section 6; (ii) all payments of compensation by the Company to Executive hereunder will terminate immediately, and (iii) Executive will be eligible for
severance benefits only in accordance with the Company’s then established plans. In the event that Executive’s employment is terminated due to death or Disability, twenty-five percent (25%) of Executive’s then unvested Equity
Awards shall vest. 
 (d) Resignation for Material Corporate Change. If within six (6) months following the
Effective Date Executive voluntarily resigns because of a Material Corporate Change then, subject to the terms of this Agreement including without limitation the conditions in Section 8, Executive will be entitled as a severance benefit to
continued payment of Executive’s Base Salary (subject to applicable tax withholdings) for twelve (12) months, such amounts to be paid in accordance with the Company’s normal payroll policies. This Section 7(d) expires on the
earlier of (i) six (6) months following the Effective Date, or (ii) the date on which the board approves the person currently serving as Interim CEO as the permanent CEO. For purposes of this Section 7(d) Material Corporate
Change means the selection of a person as permanent CEO other than the person currently serving as interim CEO coupled with a significant, material reduction of Executive’s duties, position, or responsibilities relative to Executive’s
duties, position, or responsibilities as of the Effective Date. A sale, separation or spin-off of a portion of the Company’s business operations provided the Company remains a going concern and provided Executive’s duties, position and
responsibilities with respect 

  
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to the remaining business operations are not materially reduced will also not be considered a Material Corporate Change. Executive will not resign for a Material Corporate Change without first
providing the Company with written notice within thirty (30) days of the event that Executive believes constitutes a Material Corporate Change specifically identifying the acts or omissions constituting the grounds for resignation under this
Section 7(d) and a reasonable cure period of not less than thirty (30) days. 
 (e) Resignation for Required
Relocation. If the Company requires Executive to re-locate his permanent residence to a location other than Cincinnati, Ohio, and such requirement is not in connection with a Change of Control, and Executive resign for Good Reason (under
Section 10(f)(iii) of this Agreement) then, subject to the terms of this Agreement including without limitation the conditions in Section 8, Executive, in lieu of the severance benefits listed in Section 7(a) above, will be entitled
as a severance benefit to the following: (i) continued payment of Executive’s Base Salary (subject to applicable tax withholdings) for twelve (12) months, such amounts to be paid in accordance with the Company’s normal payroll
policies; (ii) reimbursement for premiums paid for continued health benefits for Executive (and any eligible dependents) under the Company’s health plans until the earlier of (A) twelve (12) months, payable when such premiums are
due (provided Executive validly elects to continue coverage under the Consolidated Omnibus Budget Reconciliation Act (“COBRA”)), or (B) the date upon which Executive and Executive’s eligible dependents become covered under
similar plans. Executive will not resign for a required relocation under this Section 7(e) without first providing the Company with written notice of his resignation under this Section 7(e) within thirty (30) days of the event that
Executive believes constitutes a required relocation under this Section 7(e) and a reasonable cure period of not less than thirty (30) days. 
 8. Conditions to Receipt of Severance: No Duty to Mitigate. 
 (a) Separation Agreement and Release of Claims. The receipt of any severance or other benefits pursuant to Section 7 will be subject to Executive signing and not revoking a separation
agreement and release of claims in a form acceptable to the Company and provided that such release of claims becomes effective and irrevocable no later than sixty (60) days following the termination date (such deadline, the “Release
Deadline”). The Company shall deliver such form to Executive within five (5) business days after the date of termination. No severance or other benefits pursuant to Section 7 will be paid or provided until the separation agreement and
release of claims becomes effective and irrevocable. If the separation agreement and release of claims does not become effective by the Release Deadline, Executive will forfeit any rights to severance or benefits under this Agreement. Any severance
payments or benefits under this Agreement that would be considered Deferred Compensation Severance Benefits (as defined in Section 24), will be paid on, or, in the case of installments, will not commence until, the sixtieth (60th) day following Executive’s “separation from
service”, or, if later, such time as required by Section 24. Any installment payments that would have been made to Executive during the sixty (60) day period immediately following Executive’s “separation from service”
but for the preceding sentence will be paid to Executive on the sixtieth (60th) day following Executive’s “separation from service” and the remaining payments will be made as provided in this Agreement. If Executive should die before all of the severance amounts
have been paid, such unpaid amounts will be paid in a lump-sum payment promptly following such event to Executive’s designated beneficiary, if living, or otherwise to the personal representative of Executive’s estate. 

  
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 (b) Non-solicitation and Non-competition. The receipt of any severance or other
benefits pursuant to Section 7 is subject to Executive agreeing that during the Employment Term and for twelve (12) months thereafter, Executive will comply with all of the restrictive covenants contained in the Confidential Information
Agreement (as defined in Section 12 below), including without limitation, the non-compete, non-solicitation of employees and non-solicitation of customers covenants contained in Section 5 of the Confidential Information Agreement.

 (c) Nondisparagement. During the Employment Term and for twelve (12) months thereafter, Executive and the Company
in its official communications will not knowingly and materially disparage, criticize, or otherwise make any derogatory statements regarding the other. The Company will instruct its officers and directors to not knowingly and materially disparage,
criticize, or otherwise make any derogatory statements regarding Executive. Notwithstanding the foregoing, nothing contained in this agreement will be deemed to restrict Executive, the Company or any of the Company’s current or former officers
and/or directors from providing factual information to any governmental or regulatory agency (or in any way limit the content of any such information) to the extent they are requested or required to provide such information pursuant to applicable
order, subpoena, law or regulation. 
 (d) Other Requirements. Executive’s receipt of continued severance payments
pursuant to Section 7 will be subject to Executive continuing to comply with the terms of the Confidential Information Agreement and the provisions of this Section 8. 

(e) No Duty to Mitigate. Executive will not be required to mitigate the amount of any payment contemplated by this Agreement, nor
will any earnings that Executive may receive from any other source reduce any such payment. 
 9. Excise Tax. In the
event that the benefits provided for in this Agreement constitute “parachute payments” within the meaning of Section 280G of the Internal Revenue Code of 1986, as amended (the “Code”) and will be subject to the excise tax
imposed by Section 4999 of the Code (the “Excise Tax”), then Executive’s severance benefits payable under the terms of this Agreement will be either (a) delivered in full, or (b) delivered as to such lesser extent which
would result in no portion of such severance benefits being subject to the Excise Tax, whichever of the foregoing amounts, taking into account the applicable federal, state and local income taxes and the Excise Tax, results in the receipt by
Executive on an after-tax basis, of the greatest amount of severance benefits. Any reduction in payments and/or benefits required by this Section 9 will occur in the following order: (1) reduction of cash payments; (2) reduction
of vesting acceleration of equity awards; and (3) reduction of other benefits paid or provided to Executive. In the event that acceleration of vesting of equity awards is to be reduced, such acceleration of vesting will be cancelled in the
reverse order of the date of grant for Executive’s equity awards. If two or more equity awards are granted on the same date, each award will be reduced on a pro-rata basis. 

  
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 10. Definitions. 

(a) Cause. For purposes of this Agreement, “Cause” will mean: 

(i) Acts or omissions constituting gross negligence, recklessness or willful misconduct on the part of Executive with respect to
Executive’s obligations under this Agreement or otherwise relating to the business of the Company, repeated instances of neglect of Executive’s duties after notice of such neglect, or failure or refusal to carry out lawful directions from
the CEO with respect to Executive’s obligations under this Agreement or otherwise relating to the business of the Company; 
 (ii) Any act of personal dishonesty taken by Executive in connection with his responsibilities as an employee of the Company with the intention or reasonable expectation that such action may result in the
substantial personal enrichment of Executive; 
 (iii) Executive’s conviction of, or plea of nolo contendere to, a felony
that the Board reasonably believes has had or will have a material detrimental effect on the Company’s reputation or business; 
 (iv) A breach of any fiduciary duty owed to the Company by Executive that has a material detrimental effect on the Company’s reputation or business; 

(v) Executive being found liable in any Securities and Exchange Commission or other civil or criminal securities law action or entering
any cease and desist order with respect to such action (regardless of whether or not Executive admits or denies liability); 

(vi) Executive (A) obstructing or impeding; (B) endeavoring to obstruct, impede or improperly influence, or (C) failing
to materially cooperate with, any investigation authorized by the Board or any governmental or self-regulatory entity (an “Investigation”). However, Executive’s failure to waive attorney-client privilege relating to communications
with Executive’s own attorney in connection with an Investigation will not constitute “Cause”; 
 (vii)
Executive’s disqualification or bar by any governmental or self-regulatory authority from serving in the capacity contemplated by this Agreement or Executive’s loss of any governmental or self-regulatory license that is reasonably
necessary for Executive to perform his responsibilities to the Company under this Agreement, if (A) the disqualification, bar or loss continues for more than thirty (30) days, and (B) during that period the Company uses its good faith
efforts to cause the disqualification or bar to be lifted or the license replaced. While any disqualification, bar or loss continues during Executive’s employment, Executive will serve in the capacity contemplated by this Agreement to whatever
extent legally permissible and, if Executive’s employment is not permissible, Executive will be placed on leave (which will be paid to the extent legally permissible); or 
 (b) Change of Control. For purposes of this Agreement, “Change of Control” will mean the occurrence of any of the following events: 

(i) The consummation by the Company of a merger or consolidation of the Company with any other corporation, other than a merger or
consolidation which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) more than
50% of the total voting power represented by the voting securities of the Company or such surviving entity outstanding immediately after such merger or consolidation; 

  
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 (ii) The approval by the stockholders of the Company, or if stockholder approval is not
required, approval by the Board, of a plan of complete liquidation of the Company or an agreement for the sale or disposition by the Company of all or substantially all of the Company’s assets; or 

(iii) Any “person” (as such term is used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, as amended),
other than Goldman Sachs and its related funds and entities, becoming the “beneficial owner” (as defined in Rule 13d-3 under said Act), directly or indirectly, of securities of the Company representing 50% or more of the total voting power
represented by the Company’s then outstanding voting securities. 
 (c) Continuance Period. For purposes of this
Agreement, “Continuance Period” will mean the period of time beginning on the date of the termination of Executive’s employment and ending on the date on which Executive is no longer receiving Base Salary payments under
Section 7. 
 (d) Disability. For purposes of this Agreement, “Disability” will mean Executive’s
absence from his responsibilities with the Company on a full-time basis for 120 calendar days in any consecutive twelve (12) month period as a result of Executive’s mental or physical illness or injury. 

(e) In Connection with a Change of Control. For purposes of this Agreement, a termination of Executive’s employment with the
Company is “in Connection with a Change of Control” if Executive’s employment is terminated within three (3) months prior to the execution of an agreement that results in a Change of Control or twelve (12) months following a
Change of Control. 
 (f) Good Reason. For purposes of this Agreement, “Good Reason” means Executive’s
voluntary resignation of employment because of the existence of any of the following reasons and which reason(s) continue following the expiration of any cure period (as discussed below), without Executive’s written consent: 

(i) A significant, material reduction of Executive’s duties, position, or responsibilities, relative to Executive’s duties,
position, or responsibilities in effect immediately prior to the reduction of such duties, position or responsibilities that Executive asserts constitutes the basis for resignation for Good Reason. A change of title alone is not Good Reason;

 (ii) A material reduction in Executive’s cash compensation (either Base Salary, or Base Salary and Annual Incentive
Target combined) as in effect immediately prior to such 

  
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reduction. Notwithstanding the foregoing, a one-time reduction that also is applied to other similarly situated executive officers of the Company and which one-time reduction reduces the cash
compensation by a percentage reduction of 10% or less in the aggregate will not be deemed material and will not constitute “Good Reason”; 
 (iii) A material change in the geographic location from which Executive must perform services (that is, a requirement that Executive re-locate his permanent residence to a location other than Cincinnati,
Ohio), it being recognized that Executive will be required to travel extensively and be present in the Company’s San Francisco, CA and Tempe, AZ offices consistently in performance of his business duties; or 

(iv) A material breach by the Company (or its successor) of any material contractual obligation owed Executive pursuant to this
Agreement (including, without limitation, the failure of the Company to obtain the assumption of this Agreement by a successor). 
 Executive will not resign for Good Reason without first providing the Company with written notice within thirty (30) days of the event that Executive believes constitutes “Good Reason”
specifically identifying the acts or omissions constituting the grounds for Good Reason and a reasonable cure period of not less than thirty (30) days. 
 11. Indemnification. Subject to applicable law, Executive will be provided indemnification to the maximum extent permitted by the Company’s Certificate of Incorporation or Bylaws, including,
if applicable, any directors and officers insurance policies, with such indemnification to be on terms determined by the Board or any of its committees, but on terms no less favorable than provided to any other Company executive officer or director
and subject to the terms of any separate written indemnification agreement. 
 12. Confidential Information. Executive
will execute the form of At-Will Employment, Confidential Information, Inventions Assignment and Arbitration Agreement, appended hereto as Exhibit A (the “Confidential Information Agreement”). In the event of any inconsistency
between the terms of this Agreement and the terms of the Confidential Information Agreement, this Agreement will prevail. 
 13.
Assignment. This Agreement will be binding upon and inure to the benefit of (a) the heirs, executors and legal representatives of Executive upon Executive’s death, and (b) any successor of the Company. Any such successor of the
Company will be deemed substituted for the Company under the terms of this Agreement for all purposes. For this purpose, “successor” means any person, firm, corporation, or other business entity which at any time, whether by purchase,
merger, or otherwise, directly or indirectly acquires all or substantially all of the assets or business of the Company. None of the rights of Executive to receive any form of compensation payable pursuant to this Agreement may be assigned or
transferred except by will or the laws of descent and distribution. Any other attempted assignment, transfer, conveyance, or other disposition of Executive’s right to compensation or other benefits will be null and void. This Section 13
will not prevent Executive from transferring any vested property he owns. 

  
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 14. Notices. All notices, requests, demands and other communications called for
hereunder will be in writing and will be deemed given (a) on the date of delivery if delivered personally; (b) one (1) day after being sent overnight by a well-established commercial overnight service, or (c) four (4) days
after being mailed by registered or certified mail, return receipt requested, prepaid and addressed to the parties or their successors at the following addresses, or at such other addresses as the parties may later designate in writing: 

If to the Company: 
 222 South Mill Ave., Suite 800 
 Tempe, Arizona 85281 

Attn: Senior Director of Human Resources 
 With Copy to: 
 222 South Mill Ave., Suite 800 

Tempe, Arizona 85281 
 Attn: Chief Legal Officer 
 If to Executive: 

at the last residential address known by the Company. 
 15. Severability. If any provision hereof becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable, or void, this Agreement will continue in full force and effect
without said provision. 
 16. Arbitration. The parties agree that any and all disputes arising out of the terms of this
Agreement, Executive’s employment by the Company, Executive’s service as an officer or director of the Company, or Executive’s compensation and benefits, their interpretation and any of the matters herein released, will be subject to
binding arbitration in accordance with the terms of section 12 of the Confidential Information Agreement. The Parties further agree that the prevailing party in any arbitration will be entitled to injunctive relief in any court of competent
jurisdiction to enforce the arbitration award. The parties hereby agree to waive their right to have any dispute between them resolved in a court of law by a judge or jury. This paragraph will not prevent either party from seeking injunctive
relief (or any other provisional remedy) from any court having jurisdiction over the Parties and the subject matter of their dispute relating to Executive’s obligations under this Agreement and the Confidential Information Agreement.

 17. Integration. This Agreement, together with the Confidential Information Agreement and the forms of equity award
agreements that describe Executive’s outstanding Equity Awards, represents the entire agreement and understanding between the parties as to the subject matter herein and supersedes all prior or contemporaneous agreements whether written or
oral. No waiver, alteration, or modification of any of the provisions of this Agreement will be binding unless in a writing and signed by duly authorized representatives of the parties hereto. In entering into this Agreement, no party has relied on
or made any representation, warranty, inducement, promise, or 

  
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understanding that is not in this Agreement. To the extent that any provisions of this Agreement conflict with those of any other agreement to be signed upon Executive’s hire, the terms in
this Agreement will prevail. 
 18. Waiver of Breach. The waiver of a breach of any term or provision of this Agreement,
which must be in writing, will not operate as or be construed to be a waiver of any other previous or subsequent breach of this Agreement. 
 19. Survival. The Confidential Information Agreement and the Company’s and Executive’s responsibilities under Sections 6, 7, 8, and 11 will survive the termination of this Agreement.

 20. Headings. All captions and Section headings used in this Agreement are for convenient reference only and do
not form a part of this Agreement. 
 21. Tax Withholding. All payments made pursuant to this Agreement will be subject
to withholding of applicable taxes. 
 22. Governing Law. This Agreement will be governed by the laws of the state of
Arizona without regard to its conflict of laws provisions. 
 23. Acknowledgment. Executive acknowledges that he has had
the opportunity to discuss this matter with and obtain advice from his private attorney, has had sufficient time to, and has carefully read and fully understands all the provisions of this Agreement, and is knowingly and voluntarily entering into
this Agreement. 
 24. Code Section 409A. 
 (a) Notwithstanding anything to the contrary in this Agreement, no severance payable to Executive, if any, pursuant to this Agreement, when considered together with any other severance payments or
separation benefits that are considered deferred compensation under Section 409A of the Code and the final regulations and any guidance promulgated thereunder (“Section 409A”) (together, the “Deferred Compensation Separation
Benefits”) will be payable until Executive has a “separation from service” within the meaning of Section 409A. 
 (b) Notwithstanding anything to the contrary in this Agreement, if Executive is a “specified employee” within the meaning of Section 409A at the time of Executive’s termination (other
than due to death), then the Deferred Compensation Separation Benefits that are payable within the first six (6) months following Executive’s separation from service, will become payable on the first payroll date that occurs on or after
the date six (6) months and one (1) day following the date of Executive’s separation from service. All subsequent Deferred Compensation Separation Benefits, if any, will be payable in accordance with the payment schedule applicable to
each payment or benefit. Notwithstanding anything herein to the contrary, if Executive dies following Executive’s separation from service but prior to the six (6) month anniversary of the separation, then any payments delayed in accordance
with this paragraph will be payable in a lump sum as soon as administratively practicable after the date of Executive’s death and all other Deferred Compensation Separation Benefits will be payable in accordance with the payment schedule


  
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applicable to each payment or benefit. Each payment and benefit payable under this Agreement is intended to constitute separate payments for purposes of Section 1.409A-2(b)(2) of the
Treasury Regulations. 
 (c) Any amount paid under this Agreement that satisfies the requirements of the “short-term
deferral” rule set forth in Section 1.409A-1(b)(4) of the Treasury Regulations will not constitute Deferred Compensation Separation Benefits for purposes of clause (i) above. 

(d) Any amount paid under this Agreement that qualifies as a payment made as a result of an involuntary separation from service pursuant
to Section 1.409A-1(b)(9)(iii) of the Treasury Regulations that do not exceed the Section 409A Limit will not constitute Deferred Compensation Separation Benefits for purposes of clause (i) above. For purposes of this Agreement,
“Section 409A Limit” will mean the lesser of two (2) times: (i) Executive’s annualized compensation based upon the annual rate of pay paid to Executive during the Company’s taxable year preceding the Company’s
taxable year of Executive’s termination of employment as determined under Treasury Regulation 1.409A-1(b)(9)(iii)(A)(1) and any Internal Revenue Service guidance issued with respect thereto; or (ii) the maximum amount that may be taken
into account under a qualified plan pursuant to Section 401(a)(17) of the Code for the year in which Executive’s employment is terminated. 
 (e) The foregoing provisions are intended to comply with the requirements of Section 409A so that none of the severance payments and benefits to be provided hereunder will be subject to the
additional tax imposed under Section 409A, and any ambiguities herein will be interpreted to so comply. The Company and Executive agree to work together in good faith to consider amendments to this Agreement and to take such reasonable actions
which are necessary, appropriate or desirable to avoid imposition of any additional tax or income recognition prior to actual payment to Executive under Section 409A.” 

25. Counterparts. This Agreement may be executed in counterparts, and each counterpart will have the same force and effect as an
original and will constitute an effective, binding agreement on the part of each of the undersigned. 

  
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 IN WITNESS WHEREOF, each of the parties has executed this Agreement, in the case of the
Company by a duly authorized officer, as of the day and year written below. 
  

					
	COMPANY:	 		 	
			
	LIMELIGHT NETWORKS, INC.	 		 	
			
	 /s/ Robert A. Lento
	 		 	Date: January 22, 2013
	Robert A. Lento, Chief Executive Officer	 		 	
			
	EXECUTIVE:	 		 	
			
	 /s/ George Vonderhaar
	 		 	Date: January 22, 2013
	George Vonderhaar	 		 	

 [SIGNATURE PAGE TO VONDERHAAR EMPLOYMENT AGREEMENT] 

  
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 Exhibit A 

FORM OF CONFIDENTIAL INFORMATION AGREEMENT 

  
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