Document:

EX-10.1

 Exhibit 10.1 
 BARRACUDA NETWORKS, INC. 
 INDEMNIFICATION AGREEMENT 

This Indemnification Agreement (this “Agreement”) is dated as of
[            ], 2013, and is between Barracuda Networks, Inc., a Delaware corporation (the “Company”), and [insert name of indemnitee]
(“Indemnitee”). 
 RECITALS 

A. Indemnitee’s service to the Company substantially benefits the Company. 

B. Individuals are reluctant to serve as directors or officers of corporations or in certain other capacities unless they are provided
with adequate protection through insurance or indemnification against the risks of claims and actions against them arising out of such service. 
 C. Indemnitee does not regard the protection currently provided by applicable law, the Company’s governing documents and any insurance as adequate under the present circumstances, and Indemnitee may
not be willing to serve as a director or officer without additional protection. 
 D. In order to induce Indemnitee to continue
to provide services to the Company, it is reasonable, prudent and necessary for the Company to contractually obligate itself to indemnify, and to advance expenses on behalf of, Indemnitee as permitted by applicable law. 

E. This Agreement is a supplement to and in furtherance of the indemnification provided in the Company’s certificate of
incorporation and bylaws, and any resolutions adopted pursuant thereto, and this Agreement shall not be deemed a substitute therefor, nor shall this Agreement be deemed to limit, diminish or abrogate any rights of Indemnitee thereunder. 

The parties therefore agree as follows: 
 1. Definitions. 
 (a) A “Change in Control” shall be
deemed to occur upon the earliest to occur after the date of this Agreement of any of the following events: 
 (i)
Acquisition of Stock by Third Party. Any Person (as defined below) is or becomes the Beneficial Owner (as defined below), directly or indirectly, of securities of the Company representing twenty percent (20%) or more of the combined
voting power of the Company’s then outstanding securities; 
 (ii) Change in Board Composition. During any period of
two consecutive years (not including any period prior to the execution of this Agreement), individuals who at the beginning of such period constitute the Company’s board of directors, and any new directors (other than a director designated by a
person who has entered into an agreement with the Company to effect a transaction described in Sections 1(a)(i), 1(a)(iii) or 1(a)(iv)) whose election by the board of directors or nomination for election by the Company’s stockholders was
approved by a vote of at least two-thirds of the directors then still in office who either were directors at the beginning of the period or whose election or nomination for election was previously so approved, cease for any reason to constitute at
least a majority of the members of the Company’s board of directors; 

 (iii) Corporate Transactions. The effective date of a merger or consolidation of the
Company with any other entity, other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior to such merger or consolidation continuing to represent (either by remaining outstanding or
by being converted into voting securities of the surviving entity) more than 50% of the combined voting power of the voting securities of the surviving entity outstanding immediately after such merger or consolidation and with the power to elect at
least a majority of the board of directors or other governing body of such surviving entity; 
 (iv) Liquidation. The
approval by the stockholders of the Company of a 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; and 

(v) Other Events. Any other event of a nature that would be required to be reported in response to Item 6(e) of Schedule 14A
of Regulation 14A (or in response to any similar item on any similar schedule or form) promulgated under the Securities Exchange Act of 1934, as amended, whether or not the Company is then subject to such reporting requirement. 

For purposes of this Section 1(a), the following terms shall have the following meanings: 

(1) “Person” shall have the meaning as set forth in Sections 13(d) and 14(d) of the Securities Exchange Act
of 1934, as amended; provided, however, that “Person” shall exclude (i) the Company, (ii) any trustee or other fiduciary holding securities under an employee benefit plan of the Company, and (iii) any
corporation owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their ownership of stock of the Company. 
 (2) “Beneficial Owner” shall have the meaning given to such term in Rule 13d-3 under the Securities Exchange Act of 1934, as amended; provided, however, that
“Beneficial Owner” shall exclude any Person otherwise becoming a Beneficial Owner by reason of (i) the stockholders of the Company approving a merger of the Company with another entity or (ii) the Company’s
board of directors approving a sale of securities by the Company to such Person. 
 (b) “Corporate
Status” describes the status of a person who is or was a director, trustee, general partner, managing member, officer, employee, agent or fiduciary of the Company or any other Enterprise. 

(c) “DGCL” means the General Corporation Law of the State of Delaware. 

(d) “Disinterested Director” means a director of the Company who is not and was not a party to the Proceeding in
respect of which indemnification is sought by Indemnitee. 
 (e) “Enterprise” means the Company and any
other corporation, partnership, limited liability company, joint venture, trust, employee benefit plan or other enterprise of which Indemnitee is or was serving at the request of the Company as a director, trustee, general partner, managing member,
officer, employee, agent or fiduciary. 
 (f) “Expenses” include all reasonable attorneys’ fees,
retainers, court costs, transcript costs, fees and costs of experts, witness fees, travel expenses, duplicating costs, printing and binding costs, 

  
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telephone charges, postage, delivery service fees, and all other disbursements or expenses of the types customarily incurred in connection with prosecuting, defending, preparing to prosecute or
defend, investigating, being or preparing to be a witness in, or otherwise participating in, a Proceeding. Expenses also include (i) Expenses incurred in connection with any appeal resulting from any Proceeding, including without limitation the
premium, security for, and other costs relating to any cost bond, supersedeas bond or other appeal bond or their equivalent, and (ii) for purposes of Section 12(d), Expenses incurred by Indemnitee in connection with the interpretation,
enforcement or defense of Indemnitee’s rights under this Agreement or under any directors’ and officers’ liability insurance policies maintained by the Company. Expenses, however, shall not include amounts paid in settlement by
Indemnitee or the amount of judgments or fines against Indemnitee. 
 (g) “Independent Counsel” means a
law firm, or a partner or member of a law firm, that is experienced in matters of corporation law and neither presently is, nor in the past five years has been, retained to represent (i) the Company or Indemnitee in any matter material to
either such party (other than as Independent Counsel with respect to matters concerning Indemnitee under this Agreement, or other indemnitees under similar indemnification agreements), or (ii) any other party to the Proceeding giving rise to a
claim for indemnification hereunder. Notwithstanding the foregoing, the term “Independent Counsel” shall not include any person who, under the applicable standards of professional conduct then prevailing, would have a
conflict of interest in representing either the Company or Indemnitee in an action to determine Indemnitee’s rights under this Agreement. 
 (h) “Proceeding” means any threatened, pending or completed action, suit, arbitration, mediation, alternate dispute resolution mechanism, investigation, inquiry, administrative
hearing or proceeding, whether brought in the right of the Company or otherwise and whether of a civil, criminal, administrative or investigative nature, including any appeal therefrom and including without limitation any such Proceeding pending as
of the date of this Agreement, in which Indemnitee was, is or will be involved as a party, a potential party, a non-party witness or otherwise by reason of (i) the fact that Indemnitee is or was a director or officer of the Company,
(ii) any action taken by Indemnitee or any action or inaction on Indemnitee’s part while acting as a director or officer of the Company, or (iii) the fact that he or she is or was serving at the request of the Company as a director,
trustee, general partner, managing member, officer, employee, agent or fiduciary of the Company or any other Enterprise, in each case whether or not serving in such capacity at the time any liability or Expense is incurred for which indemnification
or advancement of expenses can be provided under this Agreement. 
 (i) Reference to “other enterprises”
shall include employee benefit plans; references to “fines” shall include any excise taxes assessed on a person with respect to any employee benefit plan; references to “serving at the request of the
Company” shall include any service as a director, officer, employee or agent of the Company which imposes duties on, or involves services by, such director, officer, employee or agent with respect to an employee benefit plan, its
participants or beneficiaries; and a person who acted in good faith and in a manner he or she reasonably believed to be in the best interests of the participants and beneficiaries of an employee benefit plan shall be deemed to have acted in a manner
“not opposed to the best interests of the Company” as referred to in this Agreement. 
 2. Indemnity
in Third-Party Proceedings. The Company shall indemnify Indemnitee in accordance with the provisions of this Section 2 if Indemnitee is, or is threatened to be made, a party to or a participant in any Proceeding, other than a Proceeding by
or in the right of the Company to procure a judgment in its favor. Pursuant to this Section 2, Indemnitee shall be indemnified to the fullest extent permitted by applicable law against all Expenses, judgments, fines and amounts paid in
settlement actually and reasonably incurred by Indemnitee or on his or her behalf in connection with such Proceeding or any claim, issue or matter therein, if Indemnitee acted in good faith and in a manner he or she reasonably believed to be in or
not opposed to the best interests of the Company and, with respect to any criminal action or proceeding, had no reasonable cause to believe that his or her conduct was unlawful. 

  
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 3. Indemnity in Proceedings by or in the Right of the Company. The Company shall
indemnify Indemnitee in accordance with the provisions of this Section 3 if Indemnitee is, or is threatened to be made, a party to or a participant in any Proceeding by or in the right of the Company to procure a judgment in its favor. Pursuant
to this Section 3, Indemnitee shall be indemnified to the fullest extent permitted by applicable law against all Expenses actually and reasonably incurred by Indemnitee or on Indemnitee’s behalf in connection with such Proceeding or any
claim, issue or matter therein, if Indemnitee acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the Company. No indemnification for Expenses shall be made under this Section 3 in
respect of any claim, issue or matter as to which Indemnitee shall have been adjudged by a court of competent jurisdiction to be liable to the Company, unless and only to the extent that the Delaware Court of Chancery or any court in which the
Proceeding was brought shall determine upon application that, despite the adjudication of liability but in view of all the circumstances of the case, Indemnitee is fairly and reasonably entitled to indemnification for such expenses as the Delaware
Court of Chancery or such other court shall deem proper. 
 4. Indemnification for Expenses of a Party Who is Wholly or
Partly Successful. To the extent that Indemnitee is a party to or a participant in and is successful (on the merits or otherwise) in defense of any Proceeding or any claim, issue or matter therein, the Company shall indemnify Indemnitee against
all Expenses actually and reasonably incurred by Indemnitee or on Indemnitee’s behalf in connection therewith. To the extent permitted by applicable law, if Indemnitee is not wholly successful in such Proceeding but is successful, on the merits
or otherwise, in defense of one or more but less than all claims, issues or matters in such Proceeding, the Company shall indemnify Indemnitee against all Expenses actually and reasonably incurred by Indemnitee or on Indemnitee’s behalf in
connection with (a) each successfully resolved claim, issue or matter and (b) any claim, issue or matter related to any such successfully resolved claim, issue or matter. For purposes of this section, the termination of any claim, issue or
matter in such a Proceeding by dismissal, with or without prejudice, shall be deemed to be a successful result as to such claim, issue or matter. 
 5. Indemnification for Expenses of a Witness. To the extent that Indemnitee is, by reason of his or her Corporate Status, a witness in any Proceeding to which Indemnitee is not a party, Indemnitee
shall be indemnified to the extent permitted by applicable law against all Expenses actually and reasonably incurred by Indemnitee or on Indemnitee’s behalf in connection therewith. 

6. Additional Indemnification. 
 (a) Notwithstanding any limitation in Sections 2, 3 or 4, the Company shall indemnify Indemnitee to the fullest extent permitted by applicable law if Indemnitee is, or is threatened to be made, a
party to or a participant in any Proceeding (including a Proceeding by or in the right of the Company to procure a judgment in its favor) against all Expenses, judgments, fines and amounts paid in settlement actually and reasonably incurred by
Indemnitee or on his or her behalf in connection with the Proceeding or any claim, issue or matter therein. 
 (b) For purposes
of Section 6(a), the meaning of the phrase “to the fullest extent permitted by applicable law” shall include, but not be limited to: 
 (i) the fullest extent permitted by the provision of the DGCL that authorizes or contemplates additional indemnification by agreement, or the corresponding provision of any amendment to or replacement of
the DGCL; and 

  
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 (ii) the fullest extent authorized or permitted by any amendments to or replacements of the
DGCL adopted after the date of this Agreement that increase the extent to which a corporation may indemnify its officers and directors. 
 7. Exclusions. Notwithstanding any provision in this Agreement, the Company shall not be obligated under this Agreement to make any indemnity in connection with any Proceeding (or any part of any
Proceeding): 
 (a) for which payment has actually been made to or on behalf of Indemnitee under any statute, insurance policy,
indemnity provision, vote or otherwise, except with respect to any excess beyond the amount paid; 
 (b) for an accounting or
disgorgement of profits pursuant to Section 16(b) of the Securities Exchange Act of 1934, as amended, or similar provisions of federal, state or local statutory law or common law, if Indemnitee is held liable therefor (including pursuant to any
settlement arrangements); 
 (c) for any reimbursement of the Company by Indemnitee of any bonus or other incentive-based or
equity-based compensation or of any profits realized by Indemnitee from the sale of securities of the Company, as required in each case under the Securities Exchange Act of 1934, as amended (including any such reimbursements that arise from an
accounting restatement of the Company pursuant to Section 304 of the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”), or the payment to the Company of profits arising from the purchase and sale by Indemnitee of
securities in violation of Section 306 of the Sarbanes-Oxley Act), if Indemnitee is held liable therefor (including pursuant to any settlement arrangements); 
 (d) initiated by Indemnitee, including any Proceeding (or any part of any Proceeding) initiated by Indemnitee against the Company or its directors, officers, employees, agents or other indemnitees, unless
(i) the Company’s board of directors authorized the Proceeding (or the relevant part of the Proceeding) prior to its initiation, (ii) the Company provides the indemnification, in its sole discretion, pursuant to the powers vested in
the Company under applicable law, (iii) otherwise authorized in Section 12(d) or (iv) otherwise required by applicable law; or 
 (e) if prohibited by applicable law. 
 8. Advances of Expenses. The Company
shall advance the Expenses incurred by Indemnitee in connection with any Proceeding, and such advancement shall be made as soon as reasonably practicable, but in any event no later than 60 days, after the receipt by the Company of a written
statement or statements requesting such advances from time to time (which shall include invoices received by Indemnitee in connection with such Expenses but, in the case of invoices in connection with legal services, any references to legal work
performed or to expenditure made that would cause Indemnitee to waive any privilege accorded by applicable law shall not be included with the invoice). Advances shall be unsecured and interest free and made without regard to Indemnitee’s
ability to repay such advances. Indemnitee hereby undertakes to repay any advance to the extent that it is ultimately determined that Indemnitee is not entitled to be indemnified by the Company. This Section 8 shall not apply to the extent
advancement is prohibited by law and shall not apply to any Proceeding for which indemnity is not permitted under this Agreement, but shall apply to any Proceeding referenced in Section 7(b) or 7(c) prior to a determination that Indemnitee is
not entitled to be indemnified by the Company. 

  
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 9. Procedures for Notification and Defense of Claim. 

(a) Indemnitee shall notify the Company in writing of any matter with respect to which Indemnitee intends to seek indemnification or
advancement of Expenses as soon as reasonably practicable following the receipt by Indemnitee of notice thereof. The written notification to the Company shall include, in reasonable detail, a description of the nature of the Proceeding and the facts
underlying the Proceeding. The failure by Indemnitee to notify the Company will not relieve the Company from any liability which it may have to Indemnitee hereunder or otherwise than under this Agreement, and any delay in so notifying the Company
shall not constitute a waiver by Indemnitee of any rights, except to the extent that such failure or delay materially prejudices the Company. 
 (b) If, at the time of the receipt of a notice of a Proceeding pursuant to the terms hereof, the Company has directors’ and officers’ liability insurance in effect, the Company shall give prompt
notice of the commencement of the Proceeding to the insurers in accordance with the procedures set forth in the applicable policies. The Company shall thereafter take all commercially-reasonable action to cause such insurers to pay, on behalf of
Indemnitee, all amounts payable as a result of such Proceeding in accordance with the terms of such policies. 
 (c) In the event
the Company may be obligated to make any indemnity in connection with a Proceeding, the Company shall be entitled to assume the defense of such Proceeding with counsel approved by Indemnitee, which approval shall not be unreasonably withheld, upon
the delivery to Indemnitee of written notice of its election to do so. After delivery of such notice, approval of such counsel by Indemnitee and the retention of such counsel by the Company, the Company will not be liable to Indemnitee for any fees
or expenses of counsel subsequently incurred by Indemnitee with respect to the same Proceeding. Notwithstanding the Company’s assumption of the defense of any such Proceeding, the Company shall be obligated to pay the fees and expenses of
Indemnitee’s counsel to the extent (i) the employment of counsel by Indemnitee is authorized by the Company, (ii) counsel for the Company or Indemnitee shall have reasonably concluded that there is a conflict of interest between the
Company and Indemnitee in the conduct of any such defense such that Indemnitee needs to be separately represented, (iii) the fees and expenses are non-duplicative and reasonably incurred in connection with Indemnitee’s role in the
Proceeding despite the Company’s assumption of the defense, (iv) the Company is not financially or legally able to perform its indemnification obligations or (v) the Company shall not have retained, or shall not continue to retain,
such counsel to defend such Proceeding. The Company shall have the right to conduct such defense as it sees fit in its sole discretion. Regardless of any provision in this Agreement, Indemnitee shall have the right to employ counsel in any
Proceeding at Indemnitee’s personal expense. The Company shall not be entitled, without the consent of Indemnitee, to assume the defense of any claim brought by or in the right of the Company. 

(d) Indemnitee shall give the Company such information and cooperation in connection with the Proceeding as may be reasonably appropriate.

 (e) The Company shall not be liable to indemnify Indemnitee for any settlement of any Proceeding (or any part thereof) without
the Company’s prior written consent, which shall not be unreasonably withheld. 
 (f) The Company shall have the right to
settle any Proceeding (or any part thereof) without the consent of Indemnitee. 

  
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 10. Procedures upon Application for Indemnification. 

(a) To obtain indemnification, Indemnitee shall submit to the Company a written request, including therein or therewith such
documentation and information as is reasonably available to Indemnitee and as is reasonably necessary to determine whether and to what extent Indemnitee is entitled to indemnification following the final disposition of the Proceeding. The Company
shall, as soon as reasonably practicable after receipt of such a request for indemnification, advise the board of directors that Indemnitee has requested indemnification. Any delay in providing the request will not relieve the Company from its
obligations under this Agreement, except to the extent such failure is prejudicial. 
 (b) Upon written request by Indemnitee
for indemnification pursuant to Section 10(a), a determination, if required by applicable law, with respect to Indemnitee’s entitlement thereto shall be made in the specific case (i) if a Change in Control shall have occurred, by
Independent Counsel in a written opinion to the Company’s board of directors, a copy of which shall be delivered to Indemnitee or (ii) if a Change in Control shall not have occurred, (A) by a majority vote of the Disinterested
Directors, even though less than a quorum of the Company’s board of directors, (B) by a committee of Disinterested Directors designated by a majority vote of the Disinterested Directors, even though less than a quorum of the Company’s
board of directors, (C) if there are no such Disinterested Directors or, if such Disinterested Directors so direct, by Independent Counsel in a written opinion to the Company’s board of directors, a copy of which shall be delivered to
Indemnitee or (D) if so directed by the Company’s board of directors, by the stockholders of the Company. If it is so determined that Indemnitee is entitled to indemnification, payment to Indemnitee shall be made within ten days after such
determination. Indemnitee shall cooperate with the person, persons or entity making the determination with respect to Indemnitee’s entitlement to indemnification, including providing to such person, persons or entity upon reasonable advance
request any documentation or information that is not privileged or otherwise protected from disclosure and that is reasonably available to Indemnitee and reasonably necessary to such determination. Any costs or expenses (including attorneys’
fees and disbursements) reasonably incurred by Indemnitee in so cooperating with the person, persons or entity making such determination shall be borne by the Company, to the extent permitted by applicable law. 

(c) In the event the determination of entitlement to indemnification is to be made by Independent Counsel pursuant to Section 10(b),
the Independent Counsel shall be selected as provided in this Section 10(c). If a Change in Control shall not have occurred, the Independent Counsel shall be selected by the Company’s board of directors, and the Company shall give written
notice to Indemnitee advising him or her of the identity of the Independent Counsel so selected. If a Change in Control shall have occurred, the Independent Counsel shall be selected by Indemnitee (unless Indemnitee shall request that such selection
be made by the Company’s board of directors, in which event the preceding sentence shall apply), and Indemnitee shall give written notice to the Company advising it of the identity of the Independent Counsel so selected. In either event,
Indemnitee or the Company, as the case may be, may, within ten days after such written notice of selection shall have been given, deliver to the Company or to Indemnitee, as the case may be, a written objection to such selection; provided,
however, that such objection may be asserted only on the ground that the Independent Counsel so selected does not meet the requirements of “Independent Counsel” as defined in Section 1 of this Agreement, and the objection shall
set forth with particularity the factual basis of such assertion. Absent a proper and timely objection, the person so selected shall act as Independent Counsel. If such written objection is so made and substantiated, the Independent Counsel so
selected may not serve as Independent Counsel unless and until such objection is withdrawn or a court has determined that such objection is without merit. If, within 20 days after the later of (i) submission by Indemnitee of a written request
for indemnification pursuant to Section 10(a) hereof and (ii) the final disposition of the Proceeding, the parties have not agreed upon an Independent Counsel, either the Company or Indemnitee may petition a court of competent jurisdiction
for resolution of any objection which shall have been made by the Company or Indemnitee to the other’s selection of Independent Counsel and for the appointment as Independent Counsel of 

  
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a person selected by the court or by such other person as the court shall designate, and the person with respect to whom all objections are so resolved or the person so appointed shall act as
Independent Counsel under Section 10(b) hereof. Upon the due commencement of any judicial proceeding or arbitration pursuant to Section 12(a) of this Agreement, the Independent Counsel shall be discharged and relieved of any further
responsibility in such capacity (subject to the applicable standards of professional conduct then prevailing). 
 (d) The Company
agrees to pay the reasonable fees and expenses of any Independent Counsel and to fully indemnify such counsel against any and all Expenses, claims, liabilities and damages arising out of or relating to this Agreement or its engagement pursuant
hereto. 
 11. Presumptions and Effect of Certain Proceedings. 

(a) In making a determination with respect to entitlement to indemnification hereunder, the person, persons or entity making such
determination shall, to the fullest extent not prohibited by law, presume that Indemnitee is entitled to indemnification under this Agreement if Indemnitee has submitted a request for indemnification in accordance with Section 10(a) of this
Agreement, and the Company shall, to the fullest extent not prohibited by law, have the burden of proof to overcome that presumption in connection with the making by such person, persons or entity of any determination contrary to that presumption.

 (b) The termination of any Proceeding or of any claim, issue or matter therein, by judgment, order, settlement or conviction,
or upon a plea of nolo contendere or its equivalent, shall not (except as otherwise expressly provided in this Agreement) of itself adversely affect the right of Indemnitee to indemnification or create a presumption that Indemnitee did not
act in good faith and in a manner which he or she reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal Proceeding, that Indemnitee had reasonable cause to believe that his or her conduct
was unlawful. 
 (c) For purposes of any determination of good faith, Indemnitee shall be deemed to have acted in good faith to
the extent Indemnitee relied in good faith on (i) the records or books of account of the Enterprise, including financial statements, (ii) information supplied to Indemnitee by the officers of the Enterprise in the course of their duties,
(iii) the advice of legal counsel for the Enterprise or its board of directors or counsel selected by any committee of the board of directors or (iv) information or records given or reports made to the Enterprise by an independent
certified public accountant, an appraiser, investment banker or other expert selected with reasonable care by the Enterprise or its board of directors or any committee of the board of directors. The provisions of this Section 11(c) shall not be
deemed to be exclusive or to limit in any way the other circumstances in which Indemnitee may be deemed to have met the applicable standard of conduct set forth in this Agreement. 

(d) Neither the knowledge, actions nor failure to act of any other director, officer, agent or employee of the Enterprise shall be imputed
to Indemnitee for purposes of determining the right to indemnification under this Agreement. 
 12. Remedies of
Indemnitee. 
 (a) Subject to Section 12(e), in the event that (i) a determination is made pursuant to
Section 10 of this Agreement that Indemnitee is not entitled to indemnification under this Agreement, (ii) advancement of Expenses is not timely made pursuant to Section 8 or 12(d) of this Agreement, (iii) no determination of
entitlement to indemnification shall have been made pursuant to Section 10 of this Agreement within 90 days after the later of the receipt by the Company of the request for indemnification or the final disposition of the Proceeding,
(iv) payment of indemnification pursuant to this Agreement is not made (A) within ten days after a determination has been made that Indemnitee is entitled to indemnification or 

  
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(B) with respect to indemnification pursuant to Sections 4, 5 and 12(d) of this Agreement, within 30 days after receipt by the Company of a written request therefor, or (v) the
Company or any other person or entity takes or threatens to take any action to declare this Agreement void or unenforceable, or institutes any litigation or other action or proceeding designed to deny, or to recover from, Indemnitee the benefits
provided or intended to be provided to Indemnitee hereunder, Indemnitee shall be entitled to an adjudication by a court of competent jurisdiction of his or her entitlement to such indemnification or advancement of Expenses. Alternatively,
Indemnitee, at his or her option, may seek an award in arbitration with respect to his or her entitlement to such indemnification or advancement of Expenses, to be conducted by a single arbitrator pursuant to the Commercial Arbitration Rules of the
American Arbitration Association. Indemnitee shall commence such proceeding seeking an adjudication or an award in arbitration within 180 days following the date on which Indemnitee first has the right to commence such proceeding pursuant to this
Section 12(a); provided, however, that the foregoing clause shall not apply in respect of a proceeding brought by Indemnitee to enforce his or her rights under Section 4 of this Agreement. The Company shall not oppose
Indemnitee’s right to seek any such adjudication or award in arbitration in accordance with this Agreement. 
 (b) Neither
(i) the failure of the Company, its board of directors, any committee or subgroup of the board of directors, Independent Counsel or stockholders to have made a determination that indemnification of Indemnitee is proper in the circumstances
because Indemnitee has met the applicable standard of conduct, nor (ii) an actual determination by the Company, its board of directors, any committee or subgroup of the board of directors, Independent Counsel or stockholders that Indemnitee has
not met the applicable standard of conduct, shall be a defense to the action or create a presumption that Indemnitee has or has not met the applicable standard of conduct. In the event that a determination shall have been made pursuant to
Section 10 of this Agreement that Indemnitee is not entitled to indemnification, any judicial proceeding or arbitration commenced pursuant to this Section 12 shall be conducted in all respects as a de novo trial, or arbitration, on
the merits, and Indemnitee shall not be prejudiced by reason of that adverse determination. In any judicial proceeding or arbitration commenced pursuant to this Section 12, the Company shall, to the fullest extent not prohibited by law, have
the burden of proving Indemnitee is not entitled to indemnification or advancement of Expenses, as the case may be. 
 (c) To the
fullest extent not prohibited by law, the Company shall be precluded from asserting in any judicial proceeding or arbitration commenced pursuant to this Section 12 that the procedures and presumptions of this Agreement are not valid, binding
and enforceable and shall stipulate in any such court or before any such arbitrator that the Company is bound by all the provisions of this Agreement. If a determination shall have been made pursuant to Section 10 of this Agreement that
Indemnitee is entitled to indemnification, the Company shall be bound by such determination in any judicial proceeding or arbitration commenced pursuant to this Section 12, absent (i) a misstatement by Indemnitee of a material fact, or an
omission of a material fact necessary to make Indemnitee’s statements not materially misleading, in connection with the request for indemnification, or (ii) a prohibition of such indemnification under applicable law. 

(d) To the extent not prohibited by law, the Company shall indemnify Indemnitee against all Expenses that are incurred by Indemnitee in
connection with any action for indemnification or advancement of Expenses from the Company under this Agreement or under any directors’ and officers’ liability insurance policies maintained by the Company to the extent Indemnitee is
successful in such action, and, if requested by Indemnitee, shall (as soon as reasonably practicable, but in any event no later than 60 days, after receipt by the Company of a written request therefor) advance such Expenses to Indemnitee, subject to
the provisions of Section 8. 
 (e) Notwithstanding anything in this Agreement to the contrary, no determination as to
entitlement to indemnification shall be required to be made prior to the final disposition of the Proceeding. 

  
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 13. Contribution. To the fullest extent permissible under applicable law, if the
indemnification provided for in this Agreement is unavailable to Indemnitee, the Company, in lieu of indemnifying Indemnitee, shall contribute to the amounts incurred by Indemnitee, whether for Expenses, judgments, fines or amounts paid or to be
paid in settlement, in connection with any claim relating to an indemnifiable event under this Agreement, in such proportion as is deemed fair and reasonable in light of all of the circumstances of such Proceeding in order to reflect (i) the
relative benefits received by the Company and Indemnitee as a result of the events and transactions giving rise to such Proceeding; and (ii) the relative fault of Indemnitee and the Company (and its other directors, officers, employees and
agents) in connection with such events and transactions. 
 14. Non-exclusivity. The rights of indemnification and to
receive advancement of Expenses as provided by this Agreement shall not be deemed exclusive of any other rights to which Indemnitee may at any time be entitled under applicable law, the Company’s certificate of incorporation or bylaws, any
agreement, a vote of stockholders or a resolution of directors, or otherwise. To the extent that a change in Delaware law, whether by statute or judicial decision, permits greater indemnification or advancement of Expenses than would be afforded
currently under the Company’s certificate of incorporation and bylaws and this Agreement, it is the intent of the parties hereto that Indemnitee shall enjoy by this Agreement the greater benefits so afforded by such change, subject to the
restrictions expressly set forth herein or therein. Except as expressly set forth herein, no right or remedy herein conferred is intended to be exclusive of any other right or remedy, and every other right and remedy shall be cumulative and in
addition to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. Except as expressly set forth herein, the assertion or employment of any right or remedy hereunder, or otherwise, shall not
prevent the concurrent assertion or employment of any other right or remedy. 
 15. Reserved. 

16. No Duplication of Payments. The Company shall not be liable under this Agreement to make any payment of amounts otherwise
indemnifiable hereunder (or for which advancement is provided hereunder) if and to the extent that Indemnitee has otherwise actually received payment for such amounts under any insurance policy, contract, agreement or otherwise. 

17. Insurance. To the extent that the Company maintains an insurance policy or policies providing liability insurance for
directors, trustees, general partners, managing members, officers, employees, agents or fiduciaries of the Company or any other Enterprise, Indemnitee shall be covered by such policy or policies to the same extent as the most favorably-insured
persons under such policy or policies in a comparable position. 
 18. Subrogation. In the event of any payment under
this Agreement, the Company shall be subrogated to the extent of such payment to all of the rights of recovery of Indemnitee, who shall execute all papers required and take all action necessary to secure such rights, including execution of such
documents as are necessary to enable the Company to bring suit to enforce such rights. 
 19. Services to the Company.
Indemnitee agrees to serve as a director or officer of the Company or, at the request of the Company, as a director, trustee, general partner, managing member, officer, employee, agent or fiduciary of another Enterprise, for so long as Indemnitee is
duly elected or appointed or until Indemnitee tenders his or her resignation or is removed from such position. Indemnitee may at any time and for any reason resign from such position (subject to any other contractual obligation or any obligation
imposed by operation of law), in which event the Company shall have no obligation under this Agreement to continue Indemnitee in such position. This Agreement shall not be deemed an employment contract between the Company (or any of its subsidiaries
or any Enterprise) and Indemnitee. Indemnitee specifically acknowledges 

  
 -10-

 
that any employment with the Company (or any of its subsidiaries or any Enterprise) is at will, and Indemnitee may be discharged at any time for any reason, with or without cause, with or without
notice, except as may be otherwise expressly provided in any executed, written employment contract between Indemnitee and the Company (or any of its subsidiaries or any Enterprise), any existing formal severance policies adopted by the
Company’s board of directors or, with respect to service as a director or officer of the Company, the Company’s certificate of incorporation or bylaws or the DGCL. No such document shall be subject to any oral modification thereof.

 20. Duration. This Agreement shall continue until and terminate upon the later of (a) ten years after the date
that Indemnitee shall have ceased to serve as a director or officer of the Company or as a director, trustee, general partner, managing member, officer, employee, agent or fiduciary of any other Enterprise, as applicable; or (b) one year after
the final termination of any Proceeding, including any appeal, then pending in respect of which Indemnitee is granted rights of indemnification or advancement of Expenses hereunder and of any proceeding commenced by Indemnitee pursuant to
Section 12 of this Agreement relating thereto. 
 21. Successors. This Agreement shall be binding upon the Company
and its successors and assigns, including any direct or indirect successor by purchase, merger, consolidation or otherwise to all or substantially all of the business or assets of the Company, and shall inure to the benefit of Indemnitee and
Indemnitee’s heirs, executors and administrators. The Company shall require and cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all or substantially all of the business or assets of the
Company, by written agreement, expressly to assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform if no such succession had taken place. 

22. Severability. Nothing in this Agreement is intended to require or shall be construed as requiring the Company to do or fail to
do any act in violation of applicable law. The Company’s inability, pursuant to court order or other applicable law, to perform its obligations under this Agreement shall not constitute a breach of this Agreement. If any provision or provisions
of this Agreement shall be held to be invalid, illegal or unenforceable for any reason whatsoever: (i) the validity, legality and enforceability of the remaining provisions of this Agreement (including without limitation, each portion of any
section of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall not in any way be affected or impaired thereby and shall remain enforceable to the
fullest extent permitted by law; (ii) such provision or provisions shall be deemed reformed to the extent necessary to conform to applicable law and to give the maximum effect to the intent of the parties hereto; and (iii) to the fullest
extent possible, the provisions of this Agreement (including, without limitation, each portion of any section of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or
unenforceable) shall be construed so as to give effect to the intent manifested thereby. 
 23. Enforcement. The Company
expressly confirms and agrees that it has entered into this Agreement and assumed the obligations imposed on it hereby in order to induce Indemnitee to serve as a director or officer of the Company, and the Company acknowledges that Indemnitee is
relying upon this Agreement in serving as a director or officer of the Company. 
 24. Entire Agreement. This Agreement
constitutes the entire agreement between the parties hereto with respect to the subject matter hereof and supersedes all prior agreements and understandings, oral, written and implied, between the parties hereto with respect to the subject matter
hereof; provided, however, that this Agreement is a supplement to and in furtherance of the Company’s certificate of incorporation and bylaws and applicable law. 

  
 -11-

 25. Modification and Waiver. No supplement, modification or amendment to this
Agreement shall be binding unless executed in writing by the parties hereto. No amendment, alteration or repeal of this Agreement shall adversely affect any right of Indemnitee under this Agreement in respect of any action taken or omitted by such
Indemnitee in his or her Corporate Status prior to such amendment, alteration or repeal. No waiver of any of the provisions of this Agreement shall constitute or be deemed a waiver of any other provision of this Agreement nor shall any waiver
constitute a continuing waiver. 
 26. Notices. All notices and other communications required or permitted hereunder
shall be in writing and shall be mailed by registered or certified mail, postage prepaid, sent by facsimile or electronic mail or otherwise delivered by hand, messenger or courier service addressed: 

(a) if to Indemnitee, to Indemnitee’s address, facsimile number or electronic mail address as shown on the signature page of this
Agreement or in the Company’s records, as may be updated in accordance with the provisions hereof; or 
 (b) if to the
Company, to the attention of the Chief Executive Officer or Chief Financial Officer of the Company at 3175 Winchester Blvd, Campbell, California 95008, or at such other current address as the Company shall have furnished to Indemnitee, with a copy
(which shall not constitute notice) to Jeffrey D. Saper, Esq., Wilson Sonsini Goodrich & Rosati, P.C., 650 Page Mill Road, Palo Alto, California 94304. 
 Each such notice or other communication shall for all purposes of this Agreement be treated as effective or having been given (i) if delivered by hand, messenger or courier service, when delivered
(or if sent via a nationally-recognized overnight courier service, freight prepaid, specifying next-business-day delivery, one business day after deposit with the courier), (ii) if sent via mail, at the earlier of its receipt or
five days after the same has been deposited in a regularly-maintained receptacle for the deposit of the United States mail, addressed and mailed as aforesaid, or (iii) if sent via facsimile, upon confirmation of facsimile transfer or, if
sent via electronic mail, upon confirmation of delivery when directed to the relevant electronic mail address, if sent during normal business hours of the recipient, or if not sent during normal business hours of the recipient, then on the
recipient’s next business day. 
 27. Applicable Law and Consent to Jurisdiction. This Agreement and the legal
relations among the parties shall be governed by, and construed and enforced in accordance with, the laws of the State of Delaware, without regard to its conflict of laws rules. Except with respect to any arbitration commenced by Indemnitee pursuant
to Section 12(a) of this Agreement, the Company and Indemnitee hereby irrevocably and unconditionally (i) agree that any action or proceeding arising out of or in connection with this Agreement shall be brought only in the Delaware Court
of Chancery, and not in any other state or federal court in the United States of America or any court in any other country, (ii) consent to submit to the exclusive jurisdiction of the Delaware Court of Chancery for purposes of any action or
proceeding arising out of or in connection with this Agreement, (iii) appoint, to the extent such party is not otherwise subject to service of process in the State of Delaware, The Corporation Trust Company, Wilmington, Delaware as its agent in
the State of Delaware as such party’s agent for acceptance of legal process in connection with any such action or proceeding against such party with the same legal force and validity as if served upon such party personally within the State of
Delaware, (iv) waive any objection to the laying of venue of any such action or proceeding in the Delaware Court of Chancery, and (v) waive, and agree not to plead or to make, any claim that any such action or proceeding brought in the
Delaware Court of Chancery has been brought in an improper or inconvenient forum. 
 28. Counterparts. This Agreement may
be executed in one or more counterparts, each of which shall for all purposes be deemed to be an original but all of which together shall constitute one and the same Agreement. This Agreement may also be executed and delivered by facsimile signature
and in counterparts, 

  
 -12-

 
each of which shall for all purposes be deemed to be an original but all of which together shall constitute one and the same Agreement. Only one such counterpart signed by the party against whom
enforceability is sought needs to be produced to evidence the existence of this Agreement. 
 29. Captions. The headings
of the paragraphs of this Agreement are inserted for convenience only and shall not be deemed to constitute part of this Agreement or to affect the construction thereof. 
 (signature page follows) 

  
 -13-

 The parties are signing this Indemnification Agreement as of the date stated in the
introductory sentence. 
  

	
	
	BARRACUDA NETWORKS, INC.
	
	  

(Signature)

	
	  
 (Print
name)

	
	  

(Title)

	
	[INSERT INDEMNITEE NAME]
	
	  

(Signature)

	
	  
 (Print
name)

	
	  
 (Street
address)

	
	  
 (City, State
and ZIP)EX-10.6

 Exhibit 10.6 
 June 7, 2013 
 William. “BJ” Jenkins 

Dear BJ: 
 The purpose of this
letter agreement is to confirm the current terms and conditions of your employment with Barracuda Networks, Inc. (the “Company”) as its Chief Executive Officer reporting to the. Company’s board of directors (the
“Board”). 
 You will receive an annual salary of $350,000 (the “Base Salary”), subject to the
usual, required withholdings, and payable semi-monthly in accordance with the Company’s normal payroll procedures. As a Company employee, you are also eligible to participate in the employee benefit plans currently and hereafter maintained by
the Company of general applicability to other executives of the Company, and will receive four (4) weeks of paid vacation each year. You should note that the Company may modify salaries and benefits from time to time as it deems necessary.

 You also will be eligible to participate in the Company’s annual executive bonus program, and be eligible for a target
bonus of up to 100% of your Base Salary, subject to the usual, required withholdings, upon achievement of performance objectives to be determined by the Board in its sole discretion (the “Bonus”). The Bonus, or any portion thereof,
will be paid as soon as practicable after the Board determines that the Bonus has been earned, but in no event shall the Bonus be paid after the later of the fifteenth (15th) day of the third (3rd) month, following the close of the
Company’s fiscal year in which the Bonus is earned. The Board will establish bonus achievement criteria for you for the fiscal year ending February 2014 and for fiscal years going forward. 

You will be eligible to receive awards of stock options, restricted stock or other equity awards pursuant to any plans or arrangements
the Company may have in effect from time to time. The Board or its committee will determine in its discretion whether you will be granted any such equity awards and the terms of any such award in accordance with the terms of any applicable plan or
arrangement that may be in effect from time to time. 
 It was recommended at the first meeting of the Board following your
start date that the Company grant you an option to purchase 2,760,000 shares of the Company’s common, stock at a price per share equal to the fair market value on the date of grant (the “Option”). Subject to the accelerated
vesting provisions set forth herein, the Option would vest as to 1/16th of the shares subject to the Option on each three (3) month anniversary of your start date (and if there is no corresponding day, the last day of the month), so that the
Option would be fully vested and exercisable four (4) years from your start date, subject to you continuing to provide services to the Company through the relevant vesting dates. The Option would be subject to the terms and conditions of the
Company’s 2012 Equity Incentive Plan (the “Stock Plan”) and the stock option agreement by and between you and the Company. 

  
 -1-

 In addition, it was recommended at the first meeting of the Board following your start date
that the Company grant you a restricted stock award of 2,760,000 shares of the Company’s common stock (the “Restricted Stock Award”). Subject to the accelerated vesting provisions set forth herein, the Restricted Stock Award
would vest as to 1/16th of the shares subject to the Restricted Stock Award on each three (3) month anniversary of your start date (and if there is no corresponding day, the last day of the month), so that the Restricted Stock Award would be
fully vested four (4) years from your start date, subject to you continuing to provide services to the Company through the relevant vesting dates. The Restricted Stock Award would be subject to the terms and conditions of the Company’s
Stock Plan and the restricted stock agreement by and between you and the Company. 
 A “Change in Control” means the
occurrence of any of the following events: 
 (i) Change in Ownership of the Company. A change in the ownership of the
Company which occurs on the date that any one person, or more than one person acting as a group (“Person”), acquires ownership of the stock of the Company that, together with the stock held by such Person, constitutes more than 50%
of the total voting power of the stock of the Company, except that any change in the ownership of the stock of the Company as a result of a private financing of the Company that is approved by the Board will not be considered a Change in Control; or

 (ii) Change in Effective Control of the Company. If the Company has a class of securities registered pursuant to
Section 12 of the Exchange Act, a change in the effective control of the Company which occurs on the date that a majority of members of the Board is replaced during any twelve (12) month period by Directors whose appointment or election is
not endorsed by a majority of the members of the Board prior to the date of the appointment or election. For purposes of this clause (ii), if any Person is considered to be in effective control of the Company, the acquisition of additional
control of the Company by the same Person will not be considered a Change in Control; or 
 (iii) Change in Ownership of a
Substantial Portion of the Company’s Assets. A change in the ownership of a substantial portion of the Company’s assets which occurs on the date that any Person acquires (or has acquired during the twelve (12) month period ending
on the date of the most recent acquisition by such person or persons) assets from the Company that have a total gross fair market value equal to or more than 50% of the total gross fair market value of all of the assets of the Company immediately
prior to such acquisition or acquisitions. For purposes of this subsection (iii), gross fair market value means the value of the assets of the Company, or the value of the assets being disposed of, determined without regard to any liabilities
associated with such assets. 
 For purposes of a Change in Control, persons will be considered to be acting as a group if they
are owners of a corporation that enters into a merger, consolidation, purchase or acquisition of stock, or similar business transaction with the Company. 
 Notwithstanding the foregoing, a transaction will not be deemed a Change in Control unless the transaction qualifies as a change in control event -within the meaning of Code Section 409A, as it has
been and may be amended from time to time, and any proposed or final Treasury Regulations and Internal Revenue Service guidance that has been promulgated or may be promulgated thereunder from time to time. 

  
 -2-

 Further and for the avoidance of doubt, a transaction will not constitute a Change in
Control if (i) its sole purpose is to change the jurisdiction of the Company’s incorporation, or (ii) its sole purpose is to create a holding company that will be owned in substantially the same proportions by the persons who held the
Company’s securities immediately before such transaction. 
 Should a Change in Control occur, you will be entitled to the
following, provided you remain, an employee of the Company through the date of such Change in Control: (i) the Company will pay you an amount equal to the Base Salary and Bonus paid to you over the twelve (12) months immediately preceding
the date of the Change in Control (the “Change in Control Bonus”), and such Change in Control Bonus will be paid in accordance with the Company’s regular payroll procedures and the terms of this letter, but no later than the
sixty-first (61st) day after the payment trigger; and (ii) any then-outstanding unvested shares subject to your options and the Restricted Stock Award will accelerate and fully vest as of the date of the Change in Control. 

If the Company terminates your employment other than for Cause (as defined below), death or disability, then, provided you sign and do
not revoke a general release of claims (a “Release”) in a form reasonably acceptable to the Company and in a manner that is otherwise consistent with the terms of this letter, you will be entitled to (1) receive continuing
payments of severance pay at a rate equal to your Base Salary, as then in effect, for twelve (12) months from the date of such termination, which will be paid in accordance with the Company’s regular payroll procedures; (2) receive
continuing payments of the premiums required under the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”) for a period of up to twelve (12) months following the termination of your employment with the
Company, if you and/or your covered dependents elect to continue the group health insurance coverage under the Company’s group health insurance plan(s); and (3) accelerated vesting as of the date you terminate your employment with the
Company in an amount equal to the number of shares subject to your then outstanding equity awards that you would have vested in had you remained employed with the Company for an additional six (6) months. 

If your employment with the Company is terminated voluntarily by you for any reason, for Cause by the Company, or due to your death or
disability, then (1) all vesting will terminate immediately with respect to your then outstanding equity awards; and (2) all payments of compensation by the Company to you hereunder will terminate immediately (except as to amounts already
earned). 
 In the event of your termination of employment with the Company, the preceding paragraphs are intended to be and are
exclusive and in lieu of any other rights or remedies to which you or the Company may otherwise be entitled, whether at law, tort or contract, in equity, or under this letter. 
 The receipt of any severance or other benefits pursuant to this letter will be subject to you signing and not revoking a Release; provided that such Release is effective within sixty (60) days
following your termination of employment or such shorter period specified in the Release (the 

  
 -3-

 
“Release Deadline”). No severance will be paid or provided until the Release becomes effective. If the Release is not effective by the Release Deadline, you forfeit your right to
any severance or any other benefits under this letter. If the Release becomes effective by the Release Deadline, payment of severance or other benefits under this letter will commence on the Company’s next regular payroll period following the
60-day anniversary of the date of your termination, subject to Appendix A. Except as required by Appendix A, any payments delayed from the date you terminate employment through the Release Deadline will be payable in a lump
sum without interest on the Company’s next regular payroll period following the 60-day anniversary of the date of your termination, and all other amounts will be payable in accordance with the payment schedule applicable to each payment or
benefit for the remainder of the 12-month period following the date of your termination. 
 For purposes of this letter,
“Cause” is defined as: (1) an act of dishonesty made by you in connection with your responsibilities as an employee, (2) your conviction of, or plea of nolo contendere to, a felony or any crime involving fraud,
embezzlement or any other act of moral turpitude, (3) your gross misconduct, (4) your unauthorized use or disclosure of any proprietary information or trade secrets of the Company or any other party to whom you owe an obligation of
nondisclosure as a result of your relationship with the Company; (5) your willful breach of any obligations under any written agreement or covenant with the Company; or (6) your continued failure to perform your employment duties after you
have received a written demand of performance from the Company which specifically sets forth the factual basis for the Company’s belief that you have not substantially performed your duties and have failed to cure such non-performance to the
Company’s satisfaction within ten (10) business days after receiving such notice. 
 In the event that EMC Corporation
(“EMC”) requires you to repay the relocation loan it previously extended to you (the “Relocation Loan”), the Company will pay you a lump sum bonus equal to your cash costs associated with your repayment of the
Relocation Loan (the “Relocation Bonus”), provided that you remain an employee of the Company through the date that EMC requests repayment of the Relocation Loan and you submit a request to the Company within one hundred twenty
(120) days of the date EMC requests repayment (along with supporting documentation). The Relocation Bonus will be paid as soon as practicable after the Board determines that EMC has requested the repayment of the Relocation Loan, but in no
event shall the Relocation Bonus be paid after the later of (i) the fifteenth (15th) day of the third (3rd) month following the close of the Company’s fiscal year in which the Board determines the Relocation Bonus is earned.

 You should be aware that your employment with the Company is for no specified period and constitutes at-will employment. As a
result, you are free to resign at any time, for any reason or for no reason. Similarly, the Company is free to conclude its employment relationship with you at any time, with or without cause, and with or without notice. 

The Company reserves the right to conduct background investigations and/or reference checks on all of its potential employees. Your
employment, therefore, is contingent upon a clearance of such a background investigation and/or reference check, if any. 
 For
purposes of federal immigration law, you were required to provide to the Company documentary evidence of your identity and eligibility for employment in the United States. Such documentation must have been provided to us within three
(3) business days of your date of hire, or our employment relationship with you may be terminated. 

  
 -4-

 You agree that, during the term of your employment with the Company, you will not engage in
any other employment, occupation, consulting or other business activity directly related to the business in which the Company is now involved or becomes involved during the term of your employment, nor will you engage in any other activities that
conflict with your obligations to the Company. You agree to consult with the Board before accepting any membership in another organization’s board of directors. 
 As a Company employee, you will be expected to abide by company rules and regulations. You have signed an acknowledgment that you have read and understand the company rules of conduct included in the
Company’s handbook. You have also signed and agree to continue to comply with the Company’s proprietary rights and confidentiality agreement which, among other provisions, provides for the assignment of patent rights to any invention made
during your employment at the Company and non-disclosure of proprietary information. 
 You and the Company agree that any
dispute regarding this employment letter will be resolved by binding arbitration. This employment letter replaces and supersedes, in its entirely, any prior agreement between you and the Company related to your employment. 

To confirm the terms of your employment, please sign and date this letter in the space provided below and return it to me. A duplicate
original is enclosed for your records. This letter, along with the agreement relating to proprietary rights between you and the Company, set forth the terms of your employment with the Company and supersede any prior representations or agreements,
whether written or oral. This letter may not be modified or amended except by a written agreement, signed by an officer of the Company and by you. 
 We look forward to working with you at Barracuda Networks, Inc. 
  

	
	Sincerely,
	
	BARRACUDA NETWORKS, INC.
	
	 /s/ David R. Golob

	David R. Golob
	Member of Board of Directors

  

			
	ACCEPTED AND AGREED TO this      day of May, 2013.
	
	 /s/ William Jenkins

	William Jenkins
		
	Enclosures:	 	Duplicate Original Letter
		 	Proprietary Rights Agreement
		 	Non-disclosure Agreement

  
 -5-

 Appendix A 
 Section 409A 
 ii. Notwithstanding anything to the contrary in
this letter, no severance pay or benefits to be paid or provided to you, if any, pursuant to this letter that, when considered together with any other severance payments or separation benefits, are considered deferred compensation under
Section 409A of the Internal Revenue Code of 1986, as amended, and the final regulations and any guidance promulgated thereunder (“Section 409A”) (together, the “Deferred Payments”) will be paid or
otherwise provided until you have a “separation from service” within the meaning of Section 409A. Similarly, no severance payable to you, if any, pursuant to this letter that otherwise would be exempt from Section 409A pursuant
to Treasury Regulation Section 1.409A-1(b)(9) will be payable until you haves a “separation from service” within the meaning of Section 409A. 
 iii. Notwithstanding anything to the contrary in this letter, if you are a “specified employee” within the meaning of Section 409A at the time of your termination (other than due to death),
then the Deferred Payments that are payable within the first six (6) months following your 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 your separation from service. All subsequent Deferred Payments, if any, will be payable in accordance with the payment schedule applicable to each payment or benefit. Notwithstanding anything herein to the contrary, if you die
following your separation from service, but prior to the six (6) month anniversary of the separation from service, 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 your death and all other Deferred Payments will be payable in accordance with the payment schedule applicable to each payment or benefit. Each payment and benefit payable under this letter is intended to constitute a separate
payment for purposes of Section 1.409A-2(b)(2) of the Treasury Regulations. 
 iv. Any amount paid under this letter 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 Payments for purposes of clause (i) above. 

v. Any amount paid under this letter 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 does not exceed the Section 409A Limit will not constitute Deferred Payments for purposes of clause (i) above, “Section 409A Limit” will mean two
(2) times the lesser of: (a) your annualized compensation based upon the annual rate of pay paid to you during your taxable year preceding your taxable year of your separation from service as determined under Treasury Regulation
Section 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 Internal
Revenue Code for the year in which your separation from service occurred. 
 vi. 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 

  
 -6-

 
subject to the additional tax imposed under Section 409A, and any ambiguities herein will be interpreted to so comply. The Company and you agree to work together in good faith to consider
amendments to this letter 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 you under Section 409A. 

  
 -7-

 Enclosure 1 
 Duplicate Original Letter 

  
 -8-

 William “BJ” Jenkins 

CONFIDENTIAL OFFER OF EMPLOYMENT 
 Mr. William “BJ” Jenkins 
 Dear BJ, 

On behalf of the board of directors of Barracuda Networks, I am pleased to hereby formally document below the board’s offer to you to join Barracuda
Networks as its Chief Executive Officer, reporting to the Board of Directors. We are eager for you to start work at your earliest convenience and are standing by ready to clarify any element of this offer. 

To indicate your acceptance of our offer, please sign and date this letter in the space provided below and return it to us. A duplicate original is
enclosed for your records. This letter may not be modified or amended except by a written agreement, signed by an officer of the Company and by you. 
 We look forward to working with you. 
  

			
	Base Salary	  	$350,000
		
	Performance Bonus	  	100% Target Bonus ($350,000). The company will pay 100% of your prorated (for duration of employment) target bonus for the fiscal year ending February 2013. The compensation
committee of the board will establish more detailed bonus achievement criteria for you for the fiscal year ending February 2014. Your expectation should be that you will receive 100% of your target bonus if Barracuda is performing consistently with
its financial plan and if the board is generally satisfied with your performance as CEO.
		
	Total Cash Compensation	  	$700,000 target total annual cash compensation
		
	Indemnity	  	Barracuda wll fully indemnify you against any litigation initiated by EMC in connection with your acceptance of employment by Barracuda.
		
	Stock Options	  	 Option grant to purchase 2,760,000 Barracuda Networks’ common stock, at a strike price of $5.62 per share. This represents 1.75% o
the company’s fully diluted shares outstanding.
  
 These options will
vest based on time in position, over four years, in equal quarterly installments for each o the first four years of your employment.
  

In the event of a chane in control, all options will immediately vest.

		
	Restricted Stock Grant	  	Restricted stock grant award of 2,760,000 shares of Barracuda Networks’ common stock. This represents 1.75% of the
company’s

			
		  	 fully diluted shares outstanding. This grant will vest based on time in position, over four years, in equal quarterly installments for
each of the first four years of your employment.
  
 In the event of a change
in control, this grant will immediately vest.

		
	Benefits	  	Standard executive benefits
		
	Vacation	  	4 weeks per year or as otherwise agreed
		
	Special Bonus	  	In the event that EMC forces repayment of the relocation loan which it has extended to you, Barracuda will pay you a special bonus which will compensate you for the cash costs
incurred by you in conjunction with repayment of this loan. This bonus will be subject to a claw back provision which will expire after one year of employment and which will not apply should the company terminate your employment without cause during
that first year of employment
		
	Proprietary Invention Agreement; etc.	  	We will expect you to execute Barracuda’s customary documentation regarding intellectual property, etc.
		
	Severance Benefits	  	 If Barracuda Networks terminates your employment without cause, you will receive:

 

•      Continuation of salary and benefits for 12 months

 
 •      6
months’ forward vesting of all options and restricted stock
  
 A change
in control event will result in a lump sum payment equal to the last 12 months’ actual salary and bonus paid.

		
	Board Directorships	  	You agree to consult with the board of directors of Barracuda before accepting any outside board memberships.
		
	Acceptance & Start Date	  	Start date TBD, but expected to be no later than October, 31, 2012.

  

	
	Sincerely,
	
	BARRACUDA NETWORKS, INC.
	
	 /s/ David R. Golob

	David R. Golob
	Member of the Board of Directors

  

			
	ACCEPTED AND AGREED TO this 5th day of October, 2012.
	
	 /w/ William Jenkins

	William Jenkins
		
	Enclosures:	 	Duplicate Original Letter

 Enclosure 2 
 Barracuda Networks, Inc. 
 PROPRIETARY INFORMATION AGREEMENT

 As a condition of my employment or contract with Barracuda Networks, Inc., its subsidiaries, affiliates, successors or
assigns (together the “Company”), and in consideration of my employment or contract with the Company and my receipt of the compensation now and hereafter paid to me by Company, I agree to the following: 

1. At-Will Employment. I understand and acknowledge that my employment or contract with the Company is for an unspecified duration
and constitutes “at-will” employment. I acknowledge that this employment relationship may be terminated at any time, with or without good cause or for any or no cause, at the option either of the Company or myself, with or without notice.

 2. Confidential Information. 
 a. Company Information. I agree at all times during the term of my employment and thereafter, to hold in strictest confidence, and not to use, except for the benefit of the Company, or to disclose
to any person, firm or corporation any Confidential Information of the Company. I understand that “Confidential Information” means any Company proprietary information, technical data, trade secrets or know-how, including, but not
limited to, research, development, product plans, products, services, customer lists and customers (including, but not limited to, customers of the Company on whom I called or with whom I became acquainted during the term of my employment), markets,
software, inventions, processes, formulas, structures, technology, materials, designs, drawings, engineering, hardware configuration information, marketing, finances, other business information, and information about the Company’s employees
and/or consultants (including without limitation, the compensation, job responsibility and job performance of such employees and/or consultants) disclosed to me by the Company either directly or indirectly in writing, orally or by drawings or
observation of components, equipment, or experiments, or learned by me in the course of my employment. Without limiting the generality of the foregoing, I understand that Confidential Information shall include any materials or information stamped
with the words “CONFIDENTIAL INFORMATION OF BARRACUDA NETWORKS, INC.” I further understand that Confidential Information does not include any of the foregoing items which has become publicly known and made generally available through no
wrongful act of mine or of others who were under confidentiality obligations as to the item or items involved. 
 b. Former
Employer Information. I represent that my performance of all the terms of this Agreement and as an employee of the Company does not and will not breach any agreement to keep in confidence confidential or proprietary information, knowledge, or
data acquired by me in confidence or in trust prior to my employment with the Company, and I will not disclose to the Company, or induce the Company to use, any confidential or proprietary information or trade secrets or material belonging to any
previous or concurrent employers or others. I will not bring onto the premises of the Company any unpublished document or proprietary information 

  
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belonging to any such employer, person or entity unless consented to in writing by such employer, person or entity. I agree not to enter into any agreement either written or oral in conflict
herewith. I agree to indemnify and hold harmless the Company with respect to any claim or loss attributable to any violation by me of any provision of this Section 2(b). 
 c. Third Party Information. I recognize that the Company has received and in the future will receive from third parties their confidential or proprietary information subject to a duty on the
Company’s part to maintain the confidentiality of such information and to use it only for certain limited purposes. I agree that I owe the Company and such third parties, during the term of my employment and thereafter, a duty to hold all such
confidential or proprietary information in the strictest confidence and not to disclose it to any person, firm or corporation (except as necessary in carrying out my work for the Company consistent with the Company’s agreement with such third
party) or to use it for the benefit of anyone other than for the Company or such third party (consistent with the Company’s agreement with such third party). 
 3. Inventions. 
 a. Inventions Retained and Licensed. I have
attached hereto, as Exhibit A, a list describing all inventions, original works of authorship, developments, improvements, and trade secrets which were made by me prior to my employment with the Company (collectively referred to as
“Prior Inventions”), which belong to me, which relate to the Company’s proposed business, products or research and development, and which are not assigned to the Company hereunder; or, if no such list is attached, I represent
that there are no such Prior Inventions. I agree to notify the Company in writing before I make any disclosure or perform any work on behalf of the Company that appears to threaten or conflict with proprietary rights I claim in any Invention or
idea. In the event of my failure to give such notice, I agree that I will make no claim against the Company with respect to any such Invention or idea. If in the course of my employment with the Company, I incorporate into a Company product, process
or machine a Prior Invention owned by me or in which I have an interest, the Company is hereby granted and shall have a nonexclusive, royalty-free, irrevocable, perpetual, worldwide license to make, have made, modify, use and sell such Prior
Invention as part of or in connection with such product, process or machine. 
 b. Assignment of Inventions. I agree that I will
promptly make full written disclosure to the Company, will hold in trust for the sole right and benefit of the Company, and hereby assign to the Company, or its designee, all my right, title, and interest in and to any and all inventions, original
works of authorship, developments, concepts, improvements or trade secrets, whether or not patentable or registrable under copyright or similar laws, which I may solely or jointly make, conceive, develop or reduce to practice, or cause to be made,
conceived, developed or reduced to practice, during the period of time I am in the employ of the Company (collectively referred to as “Inventions”), except as provided in Section 3(f) below. I shall promptly disclose such
Invention in writing to my immediate supervisor at the Company on the Invention Notification attached hereto as Exhibit B (which shall be received in confidence by the Company), with a copy to the President, in order to permit the
Company to claim rights to which it may be entitled under this Agreement. I further acknowledge that all original works of authorship which are made by me (solely or jointly with others) within the scope of and during the period of my employment
with the Company and which are protectible by copyright are “works made for hire,” as that term is defined in the United States Copyright Act (17 USCA, Section 101). 

  
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 c. Inventions Assigned to the United States. I agree to assign to the United States
government all my right, title, and interest in and to any and all inventions, original works of authorship, developments, improvements or trade secrets whenever such full title is required to be in the United States by a contract between the
Company and the United States or any of its agencies. 
 d. Maintenance of Records. I agree to keep and maintain adequate
and current written records of all Inventions made by me (solely or jointly with others) during the term of my employment with the Company. The records will be in the form of notes, sketches, drawings, and any other format that may be specified by
the Company. The records will be available to and remain the sole property of the Company at all times. 
 e. Patent and
Copyright Registrations. I agree to promptly notify the Company, in order to permit it to exercise its rights hereunder, of the occurrence of any application for, office action in connection with or grant of any patent, trademark, service mark,
copyright or mask work registration in connection with any Invention or any license, sale or other disposition of any rights whatsoever to any Invention, including without limitation any manufacturing, distribution or other rights. Any such license,
sale or disposition in contravention of this Agreement or effected without written notice as provided hereunder shall be void. I further agree to assist the Company, or its designee, at the Company’s expense, in every proper way to secure the
Company’s rights in the Inventions and any copyrights, patents, mask work rights or other intellectual property rights relating thereto in any and all countries, including the disclosure to the Company of all pertinent information and data with
respect thereto, the execution of all applications, specifications, oaths, assignments and all other instruments which the Company shall deem necessary in order to apply for and obtain such rights and in order to assign and convey to the Company,
its successors, assigns and nominees the sole and exclusive rights, title and interest in and to such Inventions, and any copyrights, patents, mask work rights or other intellectual property rights relating thereto. I further agree to execute,
acknowledge and deliver to the Company or its nominee upon request and at the Company’s expense all such documents, including applications for patents, copyrights and other intellectual property rights (and registrations thereof) and
assignments of inventions, patents, copyrights and other intellectual property rights with respect thereto, as the Company may determine necessary or desirable to apply for and obtain patents, copyrights and other intellectual property rights on
such Assignable Inventions in any and all countries and/or to protect the interest of the Company or its nominee in such inventions, patents, copyrights and other intellectual property rights and to vest title thereto in the Company or its nominee.
I further agree that my obligation to execute or cause to be executed, when it is in my power to do so, any such instrument or papers shall continue after the termination of this Agreement. If the Company is unable because of my mental or physical
incapacity or for any other reason to secure my signature to apply for or to pursue any application for any United States or foreign patents or copyright registrations covering Inventions or original works of authorship assigned to the Company as
above, then I hereby irrevocably designate and appoint the Company and its duly authorized officers and agents as my agent and attorney in fact, to act for and in my behalf and stead to execute and file any such applications and to do all other
lawfully permitted acts to further the prosecution and issuance of letters patent or copyright registrations thereon with the same legal force and effect as if executed by me. I hereby waive and quitclaim to

  
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the Company any and all claims, of any nature whatsoever, which I now or may hereafter have for infringement of any patents or copyrights, resulting from any such application for letters patent
or copyright registration assigned hereunder to the Company. 
 f. Exception to Assignments. I understand that the
provisions of this Agreement requiring assignment of Inventions to the Company do not apply to any invention which qualifies fully under the provisions of California Labor Code Section 2870 (attached hereto as Exhibit C). In the
event that I believe that I am entitled to ownership of an Invention not disclosed on Exhibit A pursuant to this Section 3(f), I shall notify the Company of such belief on the Invention Notification attached hereto as
Exhibit B. If the Company agrees that I am entitled to such ownership, the President of the Company shall sign the Invention Notification in the space provided. Except in such cases as the President of the Company signs the Invention
Notification as provided above, I agree that all Inventions are the sole property of the Company. 
 4. Returning Company
Documents. I agree that, at the time of leaving the employ of the Company, I will deliver to the Company (and will not keep in my possession or deliver to anyone else) any and all devices, records, data, notes, reports, proposals, lists,
correspondence, specifications, drawings, blueprints, sketches, materials, equipment, other documents or property, or reproductions of any aforementioned items belonging to the Company, its successors or assigns. In the event of the termination of
my employment, I agree to sign and deliver the “Termination Certification” attached hereto as Exhibit D. I also agree that I will not remove any Confidential Information or aforementioned materials and items from the premises
where the work of the Company is being carried on without the Company’s prior written consent. I further agree that I will in all events return these materials and items to the Company promptly following the Company’s request for their
return. 
 5. Non-Competition. 
 a. Non-Competition. I agree that, during the term of my employment with the Company, I shall not, without the Company’s prior written consent, directly or indirectly, as a principal, employee,
consultant, partner, or stockholder of, or in any other capacity with, any business enterprise (other than in my capacity as a holder of not more than 5% of the combined voting power of the outstanding stock of a publicly held company)
(a) engage in direct or indirect competition with the Company, (b) conduct a business related to that of the Company (the “Business”) or (c) develop products or services competitive with those of the Company. However,
the Company agrees that I may accept employment in an academic position, government laboratory or other non-profit organization under this Agreement 
 b. General non-solicitation. I agree that during my employment with the Company and for a period of twelve months after the termination or cessation of such employment for any reason, I shall not
solicit, divert or take away, or attempt to divert or take away, the business or patronage of any of the clients, customers or accounts, or prospective clients, customers or accounts, of the Company which were contacted, solicited or served by me
while employed by the Company. The Company agrees that I may approach existing clients or customers with respect to technology unrelated to the Company’s Business as defined in Section 5(a) above. 

  
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 c. Non-solicitation of Employees. I agree that during my employment and for a period
of twelve months after the termination or cessation of my employment for any reason, I shall not directly or indirectly recruit or solicit any employee of the Company, or induce or attempt to induce any employee of the Company to discontinue his or
her employment relationship with the Company. 
 6. Subsequent Employment. 

a. Notification to New Employer. In the event that I leave the employ of the Company, I hereby grant consent to notification by
the Company to my new employer about my rights and obligations under this Agreement. 
 b. Notice of Subsequent
Employment. I shall, for a period of twelve months after the termination or cessation of my employment with the Company, notify the Company of any change of address, and of any subsequent employment (stating the name and address of the employer
and the nature of the position) or any other business activity, provided that the Company has not terminated this Agreement prior to such time. 
 7. Conflict of Interest Guidelines. I agree to diligently adhere to the Conflict of Interest Guidelines attached as Exhibit E hereto. 

8. Representations. I agree to execute any proper oath or verify any proper document required to carry out the terms of this
Agreement. I represent that my performance of all the terms of this Agreement will not breach any agreement to keep in confidence proprietary information acquired by me in confidence or in trust prior to my employment by the Company. I have not
entered into, and I agree I will not enter into, any oral or written agreement in conflict herewith. 
 9. Arbitration and
Equitable Relief. 
 a. Arbitration. In the event of any dispute or claim relating to or arising out of the
relationship between the Company and me that cannot be settled amicably by agreement of the parties, the Company and I agree that all such disputes or claims shall be fully and finally resolved by binding arbitration conducted by the American
Arbitration Association (AAAA@) in Santa Clara, California. Arbitration shall be conducted by three (3) arbitrators, one of whom shall be selected by each party, and the third by the other two (2) arbitrators, all within the time limits
established by the then existing rules of the AAA. The provisions of California Code of Civil Procedure Section 1283.05 (Right to Discovery) shall be applicable in any such arbitration. It is agreed that in any such arbitration, the duly
appointed arbitrators may consider and award relief on any and all remedies available at law to either of the parties thereto. The decision of the arbitrators shall be final and without appeal, and may be enforced in any court having jurisdiction
over the parties or their current assets. Any dispute arising out of or in connection with this Agreement shall be finally settled without recourse to the courts. 
 b. Equitable Relief. I agree that it would be impossible or inadequate to measure and calculate the Company’s damages from any breach of the covenants set forth in Sections 2, 3, and 4 herein.
Accordingly, I agree that if I breach any of such Sections, the Company will have 

  
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available, in addition to any other right or remedy available, the right to obtain an injunction from a court of competent jurisdiction restraining such breach or threatened breach and to
specific performance of any such provision of this Agreement. I further agree that no bond or other security shall be required in obtaining such equitable relief and I hereby consent to the issuance of such injunction and to the ordering of specific
performance. 
 c. Attorneys’ Fees. In the event either party shall bring any action or legal proceeding of an
alleged breach of any provision of this Agreement or to enforce, protect or establish any term or covenant of this Agreement or right of either party under this Agreement, the prevailing party shall be entitled to recover as part of such action or
proceeding, or in a separate action brought for that purpose, reasonable attorneys’ fees and costs as may be fixed by the AAA. 
 10. General Provisions. 
 a. Governing Law; Consent to Personal
Jurisdiction. This Agreement will be governed by the laws of the State of California. The federal (Northern District of California) and state (Santa Clara County) courts within the State of California shall have exclusive jurisdiction to
adjudicate any dispute arising out of this Agreement. I hereby expressly consent to the personal jurisdiction of these state and federal courts located in the State of California for any lawsuit filed there against me by the Company arising from or
relating to this Agreement. 
 b. Entire Agreement. I acknowledge receipt of this Agreement, and agree that, with respect
to the subject matter thereof, it is my entire agreement with the Company, superseding any previous oral or written communications, representations, understandings, or agreements with the Company or any officer or representative thereof; provided,
however, that this Agreement will not be deemed to release me from the provisions of any prior written agreement between me and the Company pursuant to which I entered into covenants not to compete with the Company. 

c. Modification. This Agreement may not be changed, modified, released, discharged, abandoned, or otherwise amended, in whole or
in part, except by an instrument in writing, signed by me and the Company. I agree that any subsequent change or changes in my duties, salary or compensation shall not affect the validity or scope of this Agreement. 

d. Severability. In the event that any one or more of the provisions contained herein shall, for any reason, be held to be
invalid, illegal, or unenforceable in any respect, such invalidity, illegality, or unenforceability shall not affect any other provisions of this Agreement, and all other provisions shall remain in full force and effect. If any of the provisions of
this Agreement is held to be excessively broad, it shall be reformed and construed by limiting and reducing it so as to be enforceable to the maximum extent permitted by law. 
 e. Waiver. No delay or omission by the Company in exercising any right under this Agreement will operate as a waiver of that or any other right. A waiver or consent given by the Company on any
occasion is effective only in that instance and will not be construed as a bar to or waiver of any right on any other occasion. 

  
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 f. Successors and Assigns. This Agreement will be binding upon my heirs, executors,
administrators and other legal representatives and will be for the benefit of the Company, its successors, and its assigns. 

11. No Employment Agreement. 
 I understand that nothing in this Agreement or any other agreement or communication, written or oral, shall constitute an employment agreement, and my employment may be terminated by the Company or me
at any time, with or without cause and for any or no reason, without liability of either party by reason of such termination, unless there shall be a written agreement signed by the Company and by me explicitly providing otherwise. 

I HAVE READ ALL OF THE PROVISIONS OF THIS AGREEMENT AND I UNDERSTAND, AND AGREE TO, EACH OF SUCH PROVISIONS. I UNDERSTAND THAT THIS
AGREEMENT MAY AFFECT MY RIGHT TO ACCEPT EMPLOYMENT WITH OTHER COMPANIES SUBSEQUENT TO MY EMPLOYMENT WITH THE COMPANY. 

Dated             ,         .

  

			
	By:	 	  

		 	(Signature)
		
		 	  

		 	(Print Name)

  

			
	Witness:	 	  

  
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 EXHIBIT A 
 LIST OF PRIOR INVENTIONS 
 AND ORIGINAL WORKS OF AUTHORSHIP

  

					
	 Title
	 	 Date
	 	 Identifying Number or 
Brief Description

		 		 	
		 		 	
		 		 	

              No inventions or improvements 

             Additional Sheets Attached 

 

			
	Signature of Employee:	 	  

 

			
	Print Name of Employee:	 	  

  

			
	Date:	 	  

  
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 EXHIBIT B 
 INVENTION NOTIFICATION 
 This is to notify you that I have made or
conceived an Invention (as defined in my Proprietary Information Agreement between Barracuda Networks, Inc., together with all of its subsidiaries (collectively, the “Company”) and me (the “Agreement”)). A brief
description of the Invention is attached. 
  ̈ If I believe that I am entitled
to ownership of the Invention or any part thereof, I have checked the box at the beginning of this paragraph and have attached a brief description of the development of the Invention, specifically including information with respect to whether and to
what extent the Invention (i) relates in any manner to the demonstrably anticipated business, work or research and development of the Company and its subsidiaries, (ii) was developed in whole or in part on the Company’s time or using
the Company’s equipment, supplies, facilities or Confidential Information (as defined in the Agreement), or (iii) results from or was suggested by any task assigned to me or work performed by me for or on behalf of the Company or its
subsidiaries. 
 I understand that, if the President of the Company countersigns this letter to indicate his agreement that the
Company does not own the Invention, he does so on the basis of, and conditioned upon the accuracy and completeness of both the above-mentioned brief description of the Invention and the above-mentioned brief description of the development of the
Invention. 
  

							
	Date:	 	  
	  		  	

  

	
	(Employee’s Signature)
	
	  

	
	(Type/Print Employee’s Name)

 By my signature, I agree on behalf of the Company that, subject to the conditions described above,
the Company does not claim ownership of the Invention to which this Invention Notification relates. 
 SIGN ONLY IF THE
COMPANY DOES NOT CLAIM 
 OWNERSHIP OF THE INVENTION 

 

							
	Date:	 	  
	  		  	
		 		  		  	

  

					
	  
	 	,	 	President*

  

	*	Valid only if signed by the President of the Company. 

 EXHIBIT C 
 CALIFORNIA LABOR CODE SECTION 2870 
 EMPLOYMENT AGREEMENTS; ASSIGNMENT OF
RIGHTS 
 (A) Any provision in an employment agreement which provides that an employee shall assign, or offer to assign, any
of his or her rights in an invention to his or her employer shall not apply to an invention that the employee developed entirely on his or her own time without using the employer’s equipment, supplies, facilities, or trade secret information
except for those inventions that either: 
 (1) Relate at the time of conception or reduction to practice of the invention to
the employer’s business, or actual or demonstrably anticipated research or development of the employer. 
 (2) Result from
any work performed by the employee for the employer. 
 (B) To the extent a provision in an employment agreement purports to
require an employee to assign an invention otherwise excluded from being required to be assigned under subdivision {a), the provision is against the public policy of this state and is unenforceable. 

 EXHIBIT D 
 BARRACUDA NETWORKS, INC. 
 TERMINATION CERTIFICATION 

This is to certify that I do not have in my possession, nor have I failed to return, any devices, records, data, notes, reports,
proposals, lists, correspondence, specifications, drawings, blueprints, sketches, materials, equipment, other documents or property, or reproductions of any aforementioned items belonging to Barracuda Networks, Inc., its subsidiaries, affiliates,
successors or assigns (together, the “Company”). 
 I further certify that I have complied with all the terms
of the Company’s Proprietary Information Agreement signed by me, including the reporting of any inventions and original works of authorship (as defined therein), conceived or made by me (solely or jointly with others) covered by that agreement.

 I further agree that, in compliance with the Proprietary Information. Agreement, I will preserve as confidential all trade
secrets, confidential knowledge, data or other proprietary information relating to products, processes, know-how, designs, formulas, developmental or experimental work, computer programs, databases, other original works of authorship, customer
lists, business plans, financial information or other subject matter pertaining to any business of the Company or any of its employees, clients, consultants or licensees. 
 I further agree that for a period of twelve (12) months immediately following the termination of my relationship with the Company for any reason, whether with or without cause, I shall not either
directly or indirectly: (i) solicit, induce, recruit or encourage any of the Company’s employees or exclusive consultants to leave their employment or attempt to solicit, induce, recruit, encourage employees or exclusive consultants of the
Company to leave their employment, either for myself or for any other person or entity; or (ii) solicit, induce, recruit, or encourage any customer of the Company or potential customer who the Company has identified during the term of my
employment of the Company to terminate its business relationship with the Company, or solicit, induce, recruit, divert or take away any such customer’s business or patronage with the Company, either for myself or for any other person or entity.

  

							
	Date:	 	  
	  		  	

  

	
	  

	(Employee’s Signature)
	
	  

	(Type/Print Employee’s Name)

 EXHIBIT E 
 BARRACUDA NETWORKS, INC. 
 CONFLICT OF INTEREST GUIDELINES

 It is the policy of Barracuda Networks, Inc. to conduct its affairs in strict compliance with the letter and spirit of
the law and to adhere to the highest principles of business ethics. Accordingly, all officers, employees and independent contractors must avoid activities which are in conflict, or give the appearance of being in conflict, with these principles and
with the interests of the Company. The following are potentially compromising situations which must be avoided. Any exceptions must be reported to the President and written approval for continuation must be obtained. 

1. Revealing confidential information to outsiders or misusing confidential information. Unauthorized divulging of information is a
violation of this policy whether or not for personal gain and whether or not harm to the Company is intended. (The Employment, Confidential Information and Invention Assignment Agreement elaborates on this principle and is a binding agreement.)

 2. Accepting or offering substantial gifts, excessive entertainment, favors or payments which may be deemed to constitute
undue influence or otherwise be improper or embarrassing to the Company. 
 3. Participating in civic or professional
organizations that might involve divulging confidential information of the Company. 
 4. Initiating or approving personnel
actions affecting reward or punishment of employees or applicants where there is a family relationship or is or appears to be a personal or social involvement. 
 5. Initiating or approving any form of personal or social harassment of employees. 

6. Investing or holding outside directorships in suppliers, customers or competing companies, including financial speculation, where such
investment or directorship might influence in any manner a decision or course of action of the Company. 
 7. Borrowing from or
lending to employees, customers or suppliers. 
 8. Acquiring real estate of interest to the Company. 

9. Improperly using or disclosing to the Company any proprietary information or trade secrets of any former or concurrent employer or
other person or entity with whom obligations of confidentiality exist. 
 10. Unlawfully discussing prices, costs, customers,
sales or markets with competing companies or their employees. 

 11. Making any unlawful agreements with distributors with respect to prices. 

12. Improperly using or authorizing the use of any inventions which are the subject of patent claims of any other person or entity.

 13. Engaging in any conduct which is not in the best interest of the Company. 

Each officer, employee and independent contractor must take every necessary action to ensure compliance with these guidelines and to
bring problem areas to the attention of higher management for review. Violations of this conflict of interest policy may result in discharge without warning. 

 Enclosure 2 
 Barracuda Networks, Inc. 
 NONDISCLOSURE AGREEMENT 

THIS AGREEMENT is made on
                     (“Effective Date”) by and between Barracuda Networks, Inc., (“Discloser”) having its principal
place of business at 3175 South Winchester Blvd, Campbell, CA 95008 and
                                        
(“Employee”). 
 1. Purpose. The Discloser has agreed to make available to the Employee certain
Confidential Information (as defined below) of the Discloser as part of an interview process or employment relationship with the Discloser. 
 2. Definition. “Confidential Information” means any information, technical data, or know-how, whether tangible or intangible, including, but not limited to, that which relates to
techniques, discoveries, research, product plans, products, services, customers, markets, software, developments, inventions, processes, designs, drawings, engineering, hardware configuration information, marketing or finances, which Confidential
Information is either designated in writing to be confidential or proprietary, or should reasonably be understood by the Employee to be confidential or proprietary. Confidential Information does not include information which: (i) is in the
possession of the Employee at the time of disclosure as shown by the Employee’s files and records immediately prior to the time of disclosure; (ii) prior or after the time of disclosure becomes part of the public knowledge or literature,
not as a result of any inaction or action of the Employee; (iii) is approved for release by the Discloser in writing. 
 3.
Non-Use and Non-Disclosure of Confidential Information. The Employee agrees not to use the Confidential Information for any purpose other than that set forth in Section 1 of this Agreement. The Employee will not disclose any
Confidential Information to third parties. Employee agrees that it will take all reasonable measures to protect the secrecy of and avoid disclosure or use of Confidential Information in order to prevent it from falling into the public domain or the
possession of persons other than those persons authorized hereunder to have any such information. Employee agrees to notify the Discloser in writing of any misuse, misappropriation or disclosure of such Confidential Information which may come to its
attention. Employee shall reproduce and include in all copies of Confidential Information prepared by Employee any copyright notices and proprietary legends of the Company, and shall not remove any such notice or legend from any Confidential
Information. 
 4. Mandatory Disclosure. In the event that the Employee or its directors, officers, employees,
consultants or agents are required by a valid order issued by a court or governmental agency of competent jurisdiction to disclose any of the Confidential Information, the Employee shall give (a) prompt notice to Discloser so that Discloser may
seek a protective order or other appropriate relief; and (b) reasonable assistance, at the Discloser’s sole cost and expense, in opposing such disclosure or seeking a protective order or other limitations on disclosure. In the event that
such protective order is not obtained, the Employee shall disclose only that portion of the Confidential 

 
Information which its counsel advises it is legally required to disclose and, upon the Discloser’s request, shall use commercially reasonable efforts to obtain assurances from the applicable
court or agency that such Confidential Information will be afforded confidential treatment. Any Confidential Information disclosed pursuant to this Section 4 shall otherwise remain confidential and subject to the protections and obligations of
this Agreement. 
 5. Return of Materials. Any materials or documents which have been furnished by the Discloser
to the Employee will be promptly returned, accompanied by all copies of such documentation, after the purpose set forth in Section 1 of this Agreement has been concluded and Employee shall destroy all internal materials that in any manner
embody the Confidential Information. Upon the Discloser’s request, Employee shall certify such destruction. 
 6. No
License Granted. Discloser hereby retains its entire right, title and interest, including all intellectual property rights, in and to all of its Confidential Information and nothing in this Agreement is intended to grant any rights, whether
express or implied, to Employee under any patent, copyright, trade secret or other intellectual property right nor shall this Agreement grant Employee any rights in or to Discloser’s Confidential Information, except the limited right to review
such Confidential Information solely for the purpose set forth in Section 1 of this Agreement. None of the Confidential Information or the disclosure thereof shall constitute any representation, warranty, assurance, guarantee or inducement by
Discloser to Employee of any kind, and, in particular, with respect to the non-infringement of trademarks, patents, copyrights, mask work protection rights or any other intellectual property rights, or other rights of third persons or of Discloser.

 7. Term. The term of this Agreement shall commence on the Effective Date, and shall continue until either
party’s provision of written notice of termination to the other party. Employee’s obligations with respect to the Confidential Information shall survive any termination of this Agreement. 

8. Governing Law and Jurisdiction. This Agreement shall be governed by and construed and enforced in accordance with the
internal laws of the State of California, and shall be binding upon the parties hereto in the United States and worldwide. The federal and state courts within the State of California shall have exclusive jurisdiction to adjudicate any dispute
arising out of this Agreement, and the parties hereby agree to venue in the Northern District of California for all matters concerning this Agreement and arising therefrom. 
 9. Remedies. Employee agrees that its obligations hereunder are necessary and reasonable in order to protect the Discloser and its business, and expressly agrees that monetary damages would
be inadequate to compensate the Discloser for any breach of any covenants and agreements set forth herein. Accordingly, Employee agrees and acknowledges that any such violation or threatened violation will cause irreparable injury to the Discloser
and that, in addition to any other remedies that may be available, in law, in equity or otherwise, the Discloser shall be entitled to obtain injunctive relief against the threatened breach of this Agreement or the continuation of any such breach,
without the necessity of posting a bond or proving actual damages. 

 10. Export Regulation. Employee acknowledges that any materials and any
technical information provided under this Agreement are subject to the export regulations of the United States, and any use of such materials and technical information must be authorized under those regulations. Employee agrees that it shall not use
or transmit the materials or technical information, or any products utilizing any such materials or technical information, to any country in violation of any applicable export laws or regulations. If requested by the Discloser, Employee shall sign
written assurances and other export-related documents as may be required under the U.S. export regulations. Employee agrees to indemnify and hold the Discloser harmless from and against all claim, loss, liability or damage suffered or incurred by
the Discloser resulting from or related to Employee’s failure to comply with all export or import regulations. 
 11.
No Warranty. CONFIDENTIAL INFORMATION IS PROVIDED SOLELY ON AN “AS IS” BASIS, AND NEITHER DISCLOSER NOR ANY OF ITS REPRESENTATIVES MAKE ANY REPRESENTATION OR WARRANTY, EXPRESSED OR IMPLIED, AS TO THE ACCURACY OR COMPLETENESS
OF THE CONFIDENTIAL INFORMATION DISCLOSED TO EMPLOYEE HEREUNDER. NEITHER DISCLOSER NOR ANY OF ITS REPRESENTATIVES SHALL BE LIABLE TO EMPLOYEE OR ANY OF ITS REPRESENTATIVES RELATING TO OR RESULTING FROM THE EMPLOYEE’S USE OF ANY OF THE
CONFIDENTIAL INFORMATION OR ANY ERRORS THEREIN OR OMISSIONS THEREFROM. 
 12. Miscellaneous. This Agreement shall
be binding upon and for the benefit of the undersigned parties, their successors and assigns, provided that this Agreement nor any rights or obligations under this Agreement, in whole or in part, shall be assignable or otherwise transferable by
Employee without the prior written consent of the Discloser. All notices, requests, consents, claims, demands, waivers and other communications hereunder shall be in writing and shall be deemed to have been given: (a) when delivered by hand
(with written confirmation of receipt); (b) when received by the addressee if sent by a nationally recognized overnight courier (receipt requested); (c) on the date sent by facsimile (with confirmation of transmission) if sent during
normal business hours, and on the next business day if sent after normal business hours; or (d) on the third day after the date mailed, by certified or registered mail, return receipt requested, postage prepaid. Failure to enforce any provision
of this Agreement shall not constitute a waiver of any term hereof nor shall any single or partial exercise of any right, remedy, power or privilege hereunder preclude any other or further exercise thereof or the exercise of any other right, remedy,
power or privilege. In the event that any of the provisions of this Agreement shall be held by a court or other tribunal of competent jurisdiction to be illegal, invalid or unenforceable, such provisions shall be limited or eliminated to the minimum
extent necessary so that this Agreement shall otherwise remain in full force and effect and such invalidity, illegality or unenforceability shall not invalidate Or render unenforceable such term or provision in any other jurisdiction. This Agreement
constitutes the sole and entire understanding between the Parties hereto regarding the Confidential Information and supersedes all prior and contemporaneous discussions, understandings, agreements, representations and warranties, both written and
oral, with respect to such subject matter. No amendment or modification of this Agreement shall be valid or binding on the parties unless made in writing and signed on behalf of each of the parties by the respective duly authorized officers or
representatives. 

 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date first
written above. 
 Barracuda Networks, Inc. 
  

			
	Signed:	 	  

		
	Name:	 	  

		
	Title:	 	  

	
	EMPLOYEE
		
	Signed:	 	  

		
	Name:	 	  

		
	Title:

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