Document:

2012 Unit Option Plan

 Exhibit 10.4 
 GIGAMON LLC 
 2012 UNIT OPTION PLAN 

1. Purposes of the Plan. The purposes of this 2012 Unit Option Plan are to attract and retain the best available
personnel for positions of substantial responsibility, to provide additional incentive to Employees, Members and Consultants and to promote the success of the Company’s business. 

2. Definitions. As used herein, the following definitions will apply: 

(a) “Administrator” means the Board or any Committee as will be administering the Plan, in accordance with
Section 4 hereof. 
 (b) “Applicable Laws” means the requirements relating to the administration of
option plans under U.S. state corporate laws, U.S. federal and state securities laws, the Code, and the applicable laws of any foreign country or jurisdiction where Options are granted under the Plan. 

(c) “Board” means the Company’s Board of Managers. 

(d) “Code” means the Internal Revenue Code of 1986, as amended. 

(e) “Committee” means a committee appointed by the Board in accordance with Section 4 hereof. 

(f) “Company” means Gigamon LLC, a Delaware limited liability company. 

(g) “Consultant” means any person who is engaged by the Company or a Parent or Subsidiary of the Company to render
consulting or advisory services. 
 (h) “Disability” means total and permanent disability as defined in
Section 22(e)(3) of the Code. 
 (i) “Employee” means any person employed by the Company or a Parent or
Subsidiary of the Company. A Service Provider will not cease to be an Employee in the case of any leave of absence approved by the Company or the applicable Subsidiary of the Company. 

(j) “Exchange Act” means the Securities Exchange Act of 1934, as amended. 

(k) “Exchange Program” means a program under which (i) outstanding Options are surrendered or cancelled in
exchange for Options (which may have lower or higher exercise prices and different terms), awards of a different type, and/or cash, (ii) Optionees would have the opportunity to transfer any outstanding Options to a financial institution or
other person or entity selected by the Administrator, and/or (iii) the exercise price of an outstanding Option is reduced or increased. The Administrator will determine the terms and conditions of any Exchange Program in its sole discretion.

 (l) “Fair Market Value” means, as of any date, the value of Units determined in good faith by the
Administrator. 

 (m) “Member” will have the same meaning as such term is defined in the
Operating Agreement. 
 (n) “Operating Agreement” means the Restated Operating Agreement of the Company, as in
effect from time to time. Any reference to (i) a section of the Operating Agreement herein will be a reference to any successor or amended section of the Operating Agreement or (ii) the Operating Agreement will be a reference to any
successor Operating Agreement or the Operating Agreement as it may be further amended or amended and restated. 
 (o)
“Option” means a Unit option granted pursuant to the Plan. 
 (p) “Option Agreement” means a
written or electronic agreement between the Company and an Optionee evidencing the terms and conditions of an individual Option grant. The Option Agreement is subject to the terms and conditions of the Plan. 

(q) “Optionee” means the holder of an outstanding Option granted under the Plan. 

(r) “Parent” means any entity in an unbroken chain of entities ending with the Company, if each of the entities other
than the Company owns units, or ownership interests possessing 50% or more of the total combined voting power of all classes of units or ownership interests in one of the other entities in such chain. 

(s) “Person” means any individual, general partnership, limited partnership, limited liability partnership, limited
liability company, corporation, joint venture, trust, business trust, cooperative or association and the heirs, executors, administrators, legal representatives, successors and assigns of such Person where the context so admits. 

(t) “Plan” means this 2012 Unit Option Plan. 
 (u) “Sale Event” means either: (a) a transaction or series of related transactions in which a Person, or a group of related Persons, acquires from Members, Units representing more
than fifty percent (50%) of the outstanding voting power of the Company, (b) any liquidation, dissolution, or winding up of the Company, (c) any merger or consolidation of the Company into or with another company (except one in which
the Members immediately prior to such merger or consolidation continue to hold at least a majority of the voting power of the capital stock or other equity interests of the surviving entity) or (d) any sale of all or substantially all of the
assets of the Company. 
 (v) “Section 409A” means Section 409A of the Code, and the final regulations
and any other guidance issued thereunder. 
 (w) “Securities Act” means the Securities Act of 1933, as
amended. 
 (x) “Service Provider” means an Employee, Member or Consultant. 

(y) “Subsidiary” means any entity in an unbroken chain of entities beginning with the Company, if each of the entities
other than the last entity in the chain owns units or ownership interests possessing 50% or more of the total combined voting power of all classes of units or ownership interests in one of the other entities in such chain. 

  
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 (z) “Trigger Event” means the consummation of the conversion of the
Company or its business into a corporation. 
 (aa) “Unit” shall mean a common unit of interest in the Company
as defined in the Operating Agreement, or, in the event of a Trigger Event, means a share of common stock of the resulting corporation. 
 3. Units Subject to the Plan. Subject to the provisions of Section 8 of the Plan, the maximum aggregate number of Units that may be subject to Options and sold under the Plan is
5,901,516 Units. The Units may be authorized, but unissued, or reacquired Units. The Company, during the term of this Plan, will at all times reserve and keep available such number of Units as will be sufficient to satisfy the requirements of the
Plan. 
 If an Option expires or becomes unexercisable without having been exercised in full, or is surrendered pursuant to an
Exchange Program, the unpurchased Units which were subject thereto will become available for future grant or sale under the Plan (unless the Plan has terminated); provided, however, that Units that have actually been issued under the Plan
will not be returned to the Plan and will not become available for future distribution under the Plan. 
 4.
Administration of the Plan. 
 (a) Procedure. The Board or a Committee appointed by the Board will
administer the Plan. Any such Committee will be constituted to comply with Applicable Laws and the Operating Agreement. 
 (b)
Powers of the Administrator. Subject to the provisions of the Plan and, in the case of a Committee, the specific duties delegated by the Board to such Committee, and subject to the Operating Agreement and the approval of any
relevant authorities, the Administrator will have the authority, in its discretion: 
 (i) to determine the Fair Market Value;

 (ii) to select the Service Providers and such other individuals to whom Options may from time to time be granted hereunder;

 (iii) to determine the number of Units to be covered by each such Option granted hereunder; 

(iv) to approve forms of Option Agreement for use under the Plan; 

(v) to determine the terms and conditions of any Option granted hereunder. Such terms and conditions include, but are not limited to,
whether an Optionee, if such Optionee exercises such Optionee’s Option Agreement in accordance with the terms thereof (and subject to the terms of the Operating Agreement), will be a non-Member Unit holder or instead be entitled to be admitted
to the Company as a Member, the exercise price, the time or times when Options may be exercised (which may be based on performance criteria), any vesting acceleration or waiver of forfeiture restrictions, and any restriction or limitation regarding
any Option or the Units relating thereto, based in each case on such factors as the Administrator will determine; 

  
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 (vi) to reduce the exercise price of any Option to the then current Fair Market Value if
the Fair Market Value of the Units covered by such Option has declined since the date the Option was granted; 
 (vii) to
institute an Exchange Program; 
 (viii) to prescribe, amend and rescind rules and regulations relating to the Plan, including
rules and regulations relating to sub-plans established for the purpose of satisfying applicable foreign laws; 
 (ix) to
construe and interpret the terms of the Plan and Options granted under the Plan; 
 (x) to modify or amend each Option (subject
to Section 13(c) of the Plan), including the discretionary authority to extend the post-termination exercisability period of Options longer than is otherwise provided for in the Plan; 

(xi) to authorize any person to execute on behalf of the Company any instrument required to effect the grant of an Option previously
granted by the Administrator; and 
 (xii) to make all other determinations deemed necessary or advisable for administering the
Plan. 
 (c) Effect of Administrator’s Decision. All decisions, determinations and interpretations of the
Administrator will be final and binding on all Optionees and will be made in conformity in all respects with the Operating Agreement. 
 5. Eligibility. 
 (a) Options may be granted to Service Providers as the
Administrator may determine. 
 (b) An Option will merely reflect a right to acquire Units and the Plan will be administered,
amended or otherwise interpreted in all cases to ensure that until such time as the Option is exercised the Optionee will not be considered a Member and will have no obligation to reflect the income or losses of the Company. 

6. Options. 
 (a) Term of Option. The term of each Option will be stated in the Option Agreement; provided, however, that the term will be no more than ten (10) years from the date of grant thereof.

 (b) Option Exercise Price and Consideration. 

(i) The Administrator will determine the per Unit exercise price for the Units to be issued pursuant to exercise of an Option, provided,
however, that the per Unit exercise price will be no less than one hundred percent (100%) of the Fair Market Value per Unit on the date of grant. 

  
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 (ii) The Administrator will determine the consideration to be paid for the Units to be
issued upon exercise of an Option, including the method of payment. In making its determination as to the type of consideration to accept, the Administrator will consider if acceptance of such consideration may be reasonably expected to benefit the
Company. 
 (c) Exercise of Option. 
 (i) Procedure for Exercise; Rights as a Member. Any Option granted hereunder will be exercisable according to the terms of the Plan and at such times and under such conditions as
determined by the Administrator and set forth in the Option Agreement. An Option may not be exercised for a fraction of a Unit. 

An Option will be deemed exercised when the Company receives: (i) written or electronic notice of exercise (in accordance with the
Option Agreement) from the person entitled to exercise the Option, and (ii) full payment for the Units with respect to which the Option is exercised (together with any applicable withholding taxes that may arise upon such exercise). Full
payment may consist of any consideration and method of payment authorized by the Administrator and permitted by the Option Agreement and the Plan. Units issued upon exercise of an Option will be issued in the name of the Optionee or, if requested by
the Optionee, in the name of the Optionee and his or her spouse. Until the Units are issued (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company), no right to vote or receive
allocations of profits or losses or any other rights as a Member will exist with respect to the Units, notwithstanding the exercise of the Option. The Company will issue (or cause to be issued) such Units promptly after the Option is exercised. No
adjustment will be made for an allocation of profit or loss or other right for which the record date is prior to the date the Units are issued, except as provided in Section 8 of the Plan. An Optionee will only be entitled to prospective
allocations of profit or loss upon issuance of Units pursuant to an Option exercise. 
 Exercise of an Option in any manner will
result in a decrease in the number of Units thereafter available, both for purposes of the Plan and for sale under the Option, by the number of Units as to which the Option is exercised. 

(ii) Termination of Relationship as a Service Provider. If an Optionee ceases to be a Service Provider, such Optionee may
exercise his or her Option within thirty (30) days of termination, or such longer period of time as specified in the Option Agreement, to the extent that the Option is vested on the date of termination (but in no event later than the expiration
of the term of the Option as set forth in the Option Agreement). Unless the Administrator provides otherwise, if on the date of termination the Optionee is not vested as to his or her entire Option, the Units covered by the unvested portion of the
Option will revert to the Plan. If, after termination, the Optionee does not exercise his or her Option within the time specified by the Administrator, the Option will terminate, and the Units covered by such Option will revert to the Plan.

 (iii) Disability of Optionee. If an Optionee ceases to be a Service Provider as a result of the Optionee’s
Disability, the Optionee may exercise his or her Option within six (6) months of termination, or such longer period of time as specified in the Option Agreement, to the extent the Option is vested on the date of termination (but in no event
later than the expiration of the term of such Option as set forth in the Option Agreement). Unless the Administrator provides 

  
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otherwise, if on the date of termination the Optionee is not vested as to his or her entire Option, the Units covered by the unvested portion of the Option will revert to the Plan. If, after
termination, the Optionee does not exercise his or her Option within the time specified herein, the Option will terminate, and the Units covered by such Option will revert to the Plan. 

(iv) Death of Optionee. If an Optionee dies while a Service Provider, the Option may be exercised within six
(6) months following the Optionee’s death, or such longer period of time as specified in the Option Agreement, to the extent that the Option is vested on the date of death (but in no event later than the expiration of the term of such
Option as set forth in the Option Agreement) by the Optionee’s designated beneficiary, provided such beneficiary has been designated prior to the Optionee’s death in a form acceptable to the Administrator. If no such beneficiary has been
designated by the Optionee, then such Option may be exercised by the personal representative of the Optionee’s estate or by the person(s) to whom the Option is transferred pursuant to the Optionee’s will or in accordance with the laws of
descent and distribution. If, at the time of death, the Optionee is not vested as to his or her entire Option, the Units covered by the unvested portion of the Option will immediately revert to the Plan. If the Option is not so exercised within the
time specified herein, the Option will terminate, and the Units covered by such Option will revert to the Plan. 
 (d)
Limited Transferability of Options. Unless determined otherwise by the Administrator, Options may not be sold, pledged, assigned, hypothecated, transferred, or disposed of in any manner other than by will or the laws of descent and
distribution, and may be exercised during the lifetime of the Optionee, only by the Optionee. If the Administrator in its sole discretion makes an Option transferable, such Option may only be transferred (i) by will, (ii) by the laws of
descent and distribution, (iii) to a revocable trust, or (iv) as permitted by Rule 701 of the Securities Act. 
 (e)
Leaves of Absence/Transfer Between Locations. Unless the Administrator provides otherwise, vesting of Awards granted hereunder will be suspended during any unpaid leave of absence. A Service Provider will not cease to be an Employee in the
case of (i) any leave of absence approved by the Company or (ii) transfers between locations of the Company or between the Company, its Parent, or any Subsidiary. 
 7. Trigger Event. Subject to the provisions of the merger, reorganization or other agreement setting forth the terms of a direct exchange, merger or other reorganization transaction, upon a Trigger
Event, all Options granted under the Plan will be exchanged for or converted into, in such transaction, options to acquire shares of the resulting corporation’s common stock with terms substantially equivalent to the terms of the options, as
the case may be, they are intended to replace. 
 8. Adjustments; Dissolution or Liquidation; Sale Event. 

(a) Adjustments. Subject to any required action by the Members of the Company, in the event of any split, reverse split,
dividend, recapitalization, combination, reclassification, reorganization, merger, consolidation, split-up, spin-off, repurchase, exchange of units or other securities of the Company, other distribution of Units or other securities of the Company
without the receipt of consideration by the Company, or other change in the corporate structure of the Company affecting the Units occurs, the Administrator, in order to prevent diminution or enlargement of the

  
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benefits or potential benefits intended to be made available under the Plan, will adjust the number and class of Units that may be delivered under the Plan and/or the number, class, and price of
Units covered by each outstanding Option; provided, however, that the Administrator will make adjustments to the extent required by applicable state securities laws. Any adjustments to outstanding Units shall be consistent with Section 409A, to
the extent applicable. 
 (b) Dissolution or Liquidation. In the event of the proposed dissolution or liquidation of the
Company, the Administrator will notify each Optionee as soon as practicable prior to the effective date of such proposed transaction. To the extent it has not been previously exercised, an Option will terminate immediately prior to the consummation
of such proposed action. 
 (c) Sale Event. In the event of a Sale Event, each outstanding Option will be treated as the
Administrator determines, without a Participant’s consent, including, without limitation, that (i) Options will be assumed, or substantially equivalent Options will be substituted, by the acquiring or succeeding corporation (or an
affiliate thereof) with appropriate adjustments as to the number and kind of units and prices; (ii) upon written notice to a Participant, that the Participant’s Options will terminate upon or immediately prior to the consummation of such
Sale Event; (iii) outstanding Options will vest and become exercisable, in whole or in part prior to or upon consummation of such Sale Event, and, to the extent the Administrator determines, terminate upon or immediately prior to the
effectiveness of such transaction; (iv) (A) the termination of an Option in exchange for an amount of cash and/or property, if any, equal to the amount that would have been attained upon the exercise of such Option as of the date of the
occurrence of the transaction (and, for the avoidance of doubt, if as of the date of the occurrence of the transaction the Administrator determines in good faith that no amount would have been attained upon the exercise of such Option, then such
Option may be terminated by the Company without payment), or (B) the replacement of such Option with other rights or property selected by the Administrator in its sole discretion; or (v) any combination of the foregoing. In taking any of
the actions permitted under this subsection 8(c), the Administrator will not be obligated to treat all Options or all Options held by a Participant, similarly. 
 For the purposes of this paragraph, the Option will be considered assumed if, following the Sale Event, the option confers the right to purchase, for each Unit subject to the Option immediately prior to
the Sale Event, the consideration (whether stock, cash, or other securities or property) received in the transaction by holders of Units for each Unit held on the effective date of the transaction (and if holders were offered a choice of
consideration, the type of consideration chosen by the holders of a majority of the outstanding Units; provided, however, that if such consideration received in the Sale Event was not solely common stock of the successor corporation or its parent
corporation, the Administrator may, with the consent of the successor corporation, provide for the consideration to be received upon the exercise of the Option for each Unit subject to the Option to be solely common stock of the successor
corporation or its parent corporation equal in fair market value to the per Unit consideration received by holders of Units in the Sale Event. 
 9. Tax Withholding. 
 (a) Withholding Requirements. Prior to the
delivery of any Units pursuant to an Option (or exercise thereof), the Company will have the power and the right to deduct or withhold, or require an Optionee to remit to the Company (or the Optionee’s employer), an amount sufficient

  
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to satisfy federal, state, local, foreign or other taxes (including the Optionee’s FICA obligation) required to be withheld with respect to such Option (or exercise thereof). 

(b) Withholding Arrangements. The Administrator, in its sole discretion and pursuant to such procedures as it may specify from
time to time, may permit an Optionee to satisfy such tax withholding obligation, in whole or in part by (without limitation) (i) paying cash, (ii) electing to have the Company withhold otherwise deliverable Units having a Fair Market Value
equal to the minimum statutory amount required to be withheld, or (iii) delivering to the Company already-owned Units having a Fair Market Value equal to the minimum statutory amount required to be withheld. The Fair Market Value of the Units
to be withheld or delivered will be determined as of the date that the taxes are required to be withheld. 
 10. No Effect on
Employment or Service. Neither the Plan nor any Option will confer upon an Optionee any right with respect to continuing the Optionee’s relationship as a Service Provider, nor interfere in any way with the Optionee’s or the
Company’s right to terminate such relationship at any time, with or without cause, to the extent permitted by Applicable Laws. 
 11. Date of Grant. The date of grant of an Option will, for all purposes, be the date on which the Administrator makes the determination granting such Option, or such later date as the
Administrator may determine. Notice of the determination will be given to each Service Provider to whom an Option is so granted within a reasonable time after the date of such grant. 

12. Term of Plan. The Plan will become effective upon its adoption by the Board. It will continue in effect until
terminated under Section 13 of the Plan. Unless sooner terminated under Section 13, it will continue in effect for a term of ten (10) years from the later of (a) the effective date of the Plan, or (b) the earlier of the most
recent approval by the Board or a Majority-In-Interest of the Members of an increase in the number of Units reserved for issuance under the Plan. 
 13. Amendment and Termination of the Plan. 
 (a)
Amendment and Termination. The Administrator may at any time amend, alter, suspend or terminate the Plan. 
 (b)
Approval by the Members. The Company will obtain approval by Members of any Plan amendment to the extent necessary and desirable to comply with the Operating Agreement and Applicable Laws. 

(c) Effect of Amendment or Termination. No amendment, alteration, suspension or termination of the Plan will
impair the rights of any Optionee, unless mutually agreed otherwise between the Optionee and the Administrator, which agreement must be in writing and signed by the Optionee and the Company. Termination of the Plan will not affect the
Administrator’s ability to exercise the powers granted to it hereunder with respect to Options granted under the Plan prior to the date of such termination. 
 14. Conditions Upon Issuance of Units. 
 (a) Legal
Compliance. Units will not be issued pursuant to the exercise of an Option unless the exercise of such Option and the issuance and delivery of such Units comply with 

  
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Applicable Laws and will be further subject to the approval of counsel for the Company with respect to such compliance. 
 (b) Investment Representations. As a condition to the exercise of an Option, the Administrator may require the person exercising such Option to represent and warrant at the time of any such
exercise that the Units are being purchased only for investment and without any present intention to sell or distribute such Units if, in the opinion of counsel for the Company, such a representation is required. 

15. Inability to Obtain Authority. The inability of the Company to obtain authority from any regulatory body having jurisdiction,
which authority is deemed by the Company’s counsel to be necessary to the lawful issuance and sale of any Units hereunder, will relieve the Company of any liability in respect of the failure to issue or sell such Units as to which such
requisite authority will not have been obtained. 
 16. Approval by Members. The Plan will be subject to approval by the
Members within twelve (12) months after the date the Plan is adopted. Such approval will be obtained in the degree and manner required under Applicable Laws and the Operating Agreement. 

17. Section 409A Compliance. The Plan and the grant of Options hereunder is intended to comply with the requirements of
Section 409A, pursuant to U.S. Treasury Regulation Section 1.409A-1(b)(7) and Internal Revenue Service Notice 2005-1, 2005-2 I.R.B. 274, Q&A 4 and Q&A 7, and Section II.E. of the preamble to the proposed Code Section 409A U.S.
Treasury Regulations (Reg-158680-04) and Section III.G of the preamble to the final Code Section 409A U.S. Treasury Regulations (TD 9321), so that none of the rights to be provided hereunder will be subject to the additional tax imposed under
Section 409A. 

  
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 Exhibit 10.5 
 GIGAMON LLC 
 2012 UNIT OPTION PLAN 

OPTION AGREEMENT 
 Unless otherwise defined herein, the terms defined in the Gigamon LLC 2012 Unit Option Plan (the “Plan”) and the Operating Agreement of Gigamon LLC (the “Operating
Agreement”) shall have the same defined meanings in this Option Agreement. 
  

	I.	NOTICE OF UNIT OPTION GRANT 

 Optionee Name: 
 Address: 

The undersigned Optionee has been granted an Option to purchase Units of the Company, subject to the terms and conditions of the Plan, the
Operating Agreement, and this Option Agreement, as follows: 
  

			
	Date of Grant	  	  

		
	Vesting Commencement Date	  	  

		
	Exercise Price Per Unit	  	  

		
	Total Number of Units Granted	  	  

		
	Total Exercise Price	  	  

		
	Term/Expiration Date	  	  

 Vesting Schedule: 
 This Option shall vest, in whole or in part, according to the following vesting schedule: 
 [Twenty-five percent (25%) of the Units subject to the Option shall vest on the one (1) year anniversary of the Vesting Commencement Date, and one forty-eighth (1/48th) of the Units subject to the Option shall vest each month
thereafter on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month), subject to Optionee continuing to be a Service Provider through each such date.] 

 

	II.	AGREEMENT 

 1.
Grant of Option. The Administrator of the Company hereby grants to the Optionee named in the Notice of Grant (the “Optionee”), an option (the “Option”) to purchase the number of Units set forth
in the Notice of Grant, at the exercise price per Unit set forth in the Notice of Grant (the “Exercise Price”), and subject to the terms and conditions of the Plan, which is incorporated

 
herein by reference. Subject to Section 13(c) of the Plan, in the event of a conflict between the terms and conditions of the Plan and this Option Agreement, the terms and conditions of the
Plan shall prevail. 
 This Option is not intended to qualify as an Incentive Stock Option as defined in Section 422 of the
Code. 
 2. Exercise of Option. 
 (a) Right to Exercise. This Option shall be exercisable in accordance with the Vesting Schedule provisions set out in the Notice of Grant and with the applicable provisions of the Plan and this
Option Agreement. 
 (b) Method of Exercise. This Option shall be exercisable by delivery of an exercise notice in the
form attached as Exhibit A (the “Exercise Notice”) or in a manner and pursuant to such procedures as the Administrator may determine, which shall state the election to exercise the Option, the number of Units with
respect to which the Option is being exercised, and such other representations and agreements as may be required by the Company. The Exercise Notice shall be accompanied by payment of the aggregate Exercise Price as to all exercised Units. This
Option shall be deemed to be exercised upon receipt by the Company of such fully executed Exercise Notice accompanied by the aggregate Exercise Price, together with any applicable tax withholding. 

No Units shall be issued pursuant to the exercise of an Option unless such issuance and such exercise comply with Applicable Laws.
Assuming such compliance, for income tax purposes the Units shall be considered transferred to the Optionee on the date on which the Option is exercised with respect to such Units. 

3. Optionee’s Representations. At the time this Option is exercised, the Optionee shall, if required by the Company,
concurrently with the exercise of all or any portion of this Option, deliver to the Company his or her Investment Representation Statement in the form attached hereto as Exhibit B and execute the counterpart signature page to the
Operating Agreement attached hereto as Exhibit C. 
 4. Lock-Up Period. Optionee hereby agrees that
Optionee will not offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, lend, or otherwise transfer or dispose of, directly or
indirectly, any Unit (or other securities) of the Company or enter into any swap, hedging or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any Unit (or other securities) of the
Company held by Optionee (other than those included in the registration) for a period specified by the representative of the underwriters of Units (or other securities) of the Company not to exceed 180 days following the effective date of any
registration statement of the Company filed under the Securities Act (or such other period as may be requested by the Company or the underwriters to accommodate regulatory restrictions on (i) the publication or other distribution of research
reports and (ii) analyst recommendations and opinions, including, but not limited to, the restrictions contained in NASD Rule 2711(f)(4) or NYSE Rule 472(f)(4), or any successor provisions or amendments thereto). 

  
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 Optionee agrees to execute and deliver such other agreements as may be reasonably requested
by the Company or the underwriter which are consistent with the foregoing or which are necessary to give further effect thereto. In addition, if requested by the Company or the representative of the underwriters of Units (or other securities) of the
Company, Optionee will provide, within ten (10) days of such request, such information as may be required by the Company or such representative in connection with the completion of any public offering of the Company’s securities pursuant
to a registration statement filed under the Securities Act. The obligations described in this Section 4 will not apply to a registration relating solely to employee benefit plans on Form S-1 or Form S-8 or similar forms that may be promulgated
in the future, or a registration relating solely to a Commission Rule 145 transaction on Form S-4 or similar forms that may be promulgated in the future. The Company may impose stop-transfer instructions with respect to the Units (or other
securities) subject to the foregoing restriction until the end of said 180 day (or other) period. Optionee agrees that any transferee of the Option or Units acquired pursuant to the Option will be bound by this Section 4. 

5. Method of Payment. Payment of the aggregate Exercise Price shall be by either of the following, or a combination thereof, at
the election of the Optionee: 
 (a) cash or check; or 
 (b) if the Option is converted into an option covering shares of Company common stock, consideration received by the Company under a formal cashless exercise program adopted by the Company in connection
with the Plan. 
 6. Restrictions on Exercise. This Option may not be exercised if the issuance of Units upon such
exercise would constitute a violation of any Applicable Law or the Operating Agreement. 
 7. Non-Transferability of
Option. This Option may not be transferred in any manner otherwise than by will or by the laws of descent or distribution and may be exercised during the lifetime of Optionee only by Optionee. The terms of the Plan, the Operating Agreement and
this Option Agreement shall be binding upon the executors, administrators, heirs, successors and assigns of the Optionee. 
 8.
Term of Option. This Option may be exercised only within the term set out in the Notice of Grant, and may be exercised during such term only in accordance with the Plan and the terms of this Option. 

9. Tax Obligations. 
 (a) Tax Consequences. The Company makes no representations regarding the tax treatment related to the Option or its exercise. THE OPTIONEE SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING THIS OPTION
OR DISPOSING OF THE UNITS. 
 (b) Tax Withholding. Optionee agrees that Optionee may be subject to income and employment
tax withholding by the Company on the compensation income recognized by the Optionee and that the Company shall not be required to issue Units upon the exercise of the Option unless Optionee adequately provides for the Company to satisfy its
withholding obligations. 

  
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 (c) Code Section 409A. Under Code Section 409A, an Option that was granted
with a per Unit exercise price that is determined by the Internal Revenue Service (the “IRS”) to be less than the Fair Market Value of a Unit on the date of grant (a “discount option”) may be considered
“deferred compensation.” An Option that is a “discount option” may result in (i) income recognition by Optionee prior to the exercise of the Option, (ii) an additional twenty percent (20%) federal income tax, and
(iii) potential penalty and interest charges. The “discount option” may also result in additional state income, penalty and interest tax to the Optionee. Optionee acknowledges that the Company cannot and has not guaranteed that the
IRS will agree that the per Unit exercise price of this Option equals or exceeds the Fair Market Value of a Unit on the date of grant in a later examination. Optionee agrees that if the IRS determines that the Option was granted with a per Unit
exercise price that was less than the Fair Market Value of a Unit on the date of grant, Optionee shall be solely responsible for Optionee’s costs related to such a determination. 

10. Entire Agreement; Governing Law. The Plan and the Operating Agreement are incorporated herein by reference. The Plan, this
Option Agreement, and the Operating Agreement constitute the entire agreement of the parties with respect to the subject matter hereof and supersede in their entirety all prior undertakings and agreements of the Company and Optionee with respect to
the subject matter hereof, and may not be modified adversely to the Optionee’s interest except by means of a writing signed by the Company and Optionee. This Option Agreement is governed by the internal substantive laws but not the choice of
law rules of California. 
 11. No Guarantee of Continued Service. OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF
UNITS PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED ONLY BY CONTINUING AS A SERVICE PROVIDER AT THE WILL OF THE COMPANY (NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED THIS OPTION OR ACQUIRING UNITS HEREUNDER). OPTIONEE FURTHER ACKNOWLEDGES
AND AGREES THAT THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD,
OR AT ALL, AND SHALL NOT INTERFERE IN ANY WAY WITH OPTIONEE’S RIGHT OR THE COMPANY’S RIGHT TO TERMINATE OPTIONEE’S RELATIONSHIP AS A SERVICE PROVIDER AT ANY TIME, WITH OR WITHOUT CAUSE. 

Optionee acknowledges receipt of a copy of the Plan and the Operating Agreement and represents that he or she is familiar with the terms
and provisions thereof, and hereby accepts this Option subject to all of the terms and provisions thereof. Optionee has reviewed the Plan, the Operating Agreement, and this Option in their entirety, has had an opportunity to obtain the advice of
counsel prior to executing this Option and fully understands all provisions of the Option. Optionee hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the Administrator upon any questions arising under the
Plan, the Operating Agreement or this Option. Optionee further agrees to notify the Company upon any change in the residence address indicated below. 
  

					
	OPTIONEE:	 		 	GIGAMON LLC:

  
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	Signature	 		 	By
			
	  
	 		 	  

	Print Name	 		 	Title
			
	  
	 		 	
			
	  
	 		 	
	Residence Address	 		 	

  
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 EXHIBIT A 

GIGAMON LLC 
 2012 UNIT OPTION PLAN 
 EXERCISE NOTICE 

Gigamon LLC 
 [ADDRESS] 

[ADDRESS] 
 Attention:
                     
 1.
Exercise of Option. Effective as of today,             ,     , the undersigned (“Optionee”) hereby elects to exercise Optionee’s
option to purchase              common units (the “Units”) of Gigamon LLC (the “Company”) under and pursuant to the 2012 Unit Option Plan
(the “Plan”) and the Unit Option Agreement dated             ,      (the “Option Agreement”). 

2. Delivery of Payment. Optionee herewith delivers to the Company the full purchase price of the Units, as set forth in the
Agreement, and any and all withholding taxes due in connection with the exercise of the Option. 
 3. Representations of
Optionee. Optionee acknowledges that Optionee has received, read and understood the Plan, the Operating Agreement and the Option Agreement and agrees to abide by and be bound by their terms and conditions. 

4. Rights as Member. Until the issuance of the Units (as evidenced by the appropriate entry on the books of the Company or of a
duly authorized transfer agent of the Company), no right to vote or receive allocations of profits or losses or any other rights as a Member shall exist with respect to the Units, notwithstanding the exercise of the Option. The Units shall be issued
to the Optionee as soon as practicable after the Option is exercised. No adjustment shall be made for a dividend or other right for which the record date is prior to the date of issuance except as provided in Section 11 of the Plan.

 5. Company’s Right of First Refusal. Before any Units held by Optionee or any transferee (either being sometimes
referred to herein as the “Holder”) may be sold or otherwise transferred (including transfer by gift or operation of law), the Company or its assignee(s) shall have a right of first refusal to purchase the Units on the terms
and conditions set forth in this Section (the “Right of First Refusal”). 
 (a) Notice of Proposed
Transfer. The Holder of the Units shall deliver to the Company a written notice (the “Notice”) stating: (i) the Holder’s bona fide intention to sell or otherwise transfer such Units; (ii) the name of each
proposed purchaser or other transferee (“Proposed Transferee”); (iii) the number of Units to be transferred to each Proposed Transferee; and (iv) the bona fide cash price or other consideration for which the Holder
proposes to transfer the 

 
Units (the “Offered Price”), and the Holder shall offer the Units at the Offered Price to the Company or its assignee(s). 

(b) Exercise of Right of First Refusal. At any time within thirty (30) days after receipt of the Notice, the Company and/or
its assignee(s) may, by giving written notice to the Holder, elect to purchase all, but not less than all, of the Units proposed to be transferred to any one or more of the Proposed Transferees, at the purchase price determined in accordance with
subsection (c) below. 
 (c) Purchase Price. The purchase price (“Purchase Price”) for the
Units purchased by the Company or its assignee(s) under this Section 5 shall be the Offered Price. If the Offered Price includes consideration other than cash, the cash equivalent value of the non-cash consideration shall be determined by the
Board of the Company in good faith. 
 (d) Payment. Payment of the Purchase Price shall be made, at the option of the
Company or its assignee(s), in cash (by check), by cancellation of all or a portion of any outstanding indebtedness of the Holder to the Company (or, in the case of repurchase by an assignee, to the assignee), or by any combination thereof within
thirty (30) days after receipt of the Notice or in the manner and at the times set forth in the Notice. 
 (e)
Holder’s Right to Transfer. If all of the Units proposed in the Notice to be transferred to a given Proposed Transferee are not purchased by the Company and/or its assignee(s) as provided in this Section 5, then the Holder may sell
or otherwise transfer such Units to that Proposed Transferee at the Offered Price or at a higher price, provided that such sale or other transfer is consummated within 120 days after the date of the Notice, that any such sale or other transfer is
effected in accordance with any applicable securities laws and that the Proposed Transferee agrees in writing that the provisions of this Section 5 shall continue to apply to the Units in the hands of such Proposed Transferee. If the Units
described in the Notice are not transferred to the Proposed Transferee within such period, a new Notice shall be given to the Company, and the Company and/or its assignees shall again be offered the Right of First Refusal before any Units held by
the Holder may be sold or otherwise transferred. 
 (f) Exception for Certain Family Transfers. Anything to the contrary
contained in this Section 5 notwithstanding, the transfer of any or all of the Units during the Optionee’s lifetime or on the Optionee’s death by will or intestacy to the Optionee’s immediate family or a trust for the benefit of
the Optionee’s immediate family shall be exempt from the provisions of this Section 5. “Immediate Family” as used herein shall mean spouse, lineal descendant or antecedent, father, mother, brother or sister. In such
case, the transferee or other recipient shall receive and hold the Units so transferred subject to the provisions of this Section 5, and there shall be no further transfer of such Units except in accordance with the terms of this
Section 5. 
 (g) Termination of Right of First Refusal. The Right of First Refusal shall terminate as to any Units
upon the earlier of (i) the first sale of Company common stock to the general public pursuant to a registration statement filed with and declared effective by the Securities and Exchange Commission under the Securities Act of 1933, as amended,
(ii) a Change in Control in which the successor corporation has equity securities that are publicly traded, or (iii) such other date as may be provided by the terms of the Operating Agreement. 

  
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 6. Tax Consultation. Optionee understands that Optionee may suffer adverse tax
consequences as a result of Optionee’s purchase or disposition of the Units. Optionee represents that Optionee has consulted with any tax consultants Optionee deems advisable in connection with the purchase or disposition of the Units and that
Optionee is not relying on the Company for any tax advice. 
 7. Restrictive Legends and Stop-Transfer Orders.

 (a) Legends. Optionee understands and agrees that the Company shall cause the legends set forth below or legends
substantially equivalent thereto, to be placed upon any certificate(s) evidencing ownership of the Units together with any other legends that may be required by the Company or by state or federal securities laws: 

THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 (THE “ACT”) AND MAY
NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS AND UNTIL REGISTERED UNDER THE ACT OR, IN THE OPINION OF COMPANY COUNSEL SATISFACTORY TO THE ISSUER OF THESE SECURITIES, SUCH OFFER, SALE OR TRANSFER, PLEDGE OR
HYPOTHECATION IS IN COMPLIANCE THEREWITH. 
 THE UNITS REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN RESTRICTIONS ON
TRANSFER AND A RIGHT OF FIRST REFUSAL HELD BY THE ISSUER OR ITS ASSIGNEE(S) AS SET FORTH IN THE EXERCISE NOTICE BETWEEN THE ISSUER AND THE ORIGINAL HOLDER OF THESE UNITS, A COPY OF WHICH MAY BE OBTAINED AT THE PRINCIPAL OFFICE OF THE ISSUER. SUCH
TRANSFER RESTRICTIONS AND RIGHT OF FIRST REFUSAL ARE BINDING ON TRANSFEREES OF THESE UNITS. 
 THE UNITS REPRESENTED BY THIS
CERTIFICATE ARE SUBJECT TO RESTRICTIONS ON TRANSFER FOR A PERIOD NOT TO EXCEED 180 DAYS FOLLOWING THE EFFECTIVE DATE OF THE UNDERWRITTEN PUBLIC OFFERING OF THE COMPANY’S SECURITIES AND MAY NOT BE SOLD OR OTHERWISE DISPOSED OF BY THE HOLDER
WITHOUT THE CONSENT OF THE COMPANY OR THE MANAGING UNDERWRITER. 
 (b) Stop-Transfer Notices. Optionee agrees that, in
order to ensure compliance with the restrictions referred to herein, the Company may issue appropriate “stop transfer” instructions to its transfer agent, if any, and that, if the Company transfers its own securities, it may make
appropriate notations to the same effect in its own records. 
 (c) Refusal to Transfer. The Company shall not be
required (i) to transfer on its books any Units that have been sold or otherwise transferred in violation of any of the provisions of this Exercise Notice or (ii) to treat as owner of such Units or to accord the right to vote or pay
dividends to any purchaser or other transferee to whom such Units shall have been so transferred. 

  
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 8. Successors and Assigns. The Company may assign any of its rights under this
Exercise Notice to single or multiple assignees, and this Exercise Notice shall inure to the benefit of the successors and assigns of the Company. Subject to the restrictions on transfer herein set forth, this Exercise Notice shall be binding upon
Optionee and his or her heirs, executors, administrators, successors and assigns. 
 9. Interpretation. Any dispute
regarding the interpretation of this Exercise Notice shall be submitted by Optionee or by the Company forthwith to the Administrator which shall review such dispute at its next regular meeting. The resolution of such a dispute by the Administrator
shall be final and binding on all parties. 
 10. Governing Law; Severability. This Exercise Notice is governed by the
internal substantive laws but not the choice of law rules, of California. In the event that any provision hereof becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable or void, this Exercise Notice will continue in
full force and effect. 
 11. Entire Agreement. The Plan, Operating Agreement, and Option Agreement are incorporated
herein by reference. This Exercise Notice, the Plan, the Operating Agreement, the Option Agreement and the Investment Representation Statement constitute the entire agreement of the parties with respect to the subject matter hereof and supersede in
their entirety all prior undertakings and agreements of the Company and Optionee with respect to the subject matter hereof, and may not be modified adversely to the Optionee’s interest except by means of a writing signed by the Company and
Optionee. 
  

					
	Submitted by:	 		 	Accepted by:
	OPTIONEE:	 		 	GIGAMON LLC:
			
	  
	 		 	  

	Signature	 		 	By
			
	  
	 		 	  

	Print Name	 		 	Title
			
	Address:	 		 	Address:
			
	  
	 		 	  

			
	  
	 		 	  

			
	  
	 		 	
			
		 		 	  

		 		 	Date Received

  
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 EXHIBIT B 

INVESTMENT REPRESENTATION STATEMENT 
  

			
	OPTIONEE:	  	
		
	COMPANY:	  	GIGAMON LLC
		
	SECURITY:	  	COMMON UNIT
		
	AMOUNT:	  	
		
	DATE:	  	

 In connection with the purchase of the above-listed Securities, the undersigned Optionee represents to
the Company the following: 
 (a) Optionee is aware of the Company’s business affairs and financial condition and has
acquired sufficient information about the Company to reach an informed and knowledgeable decision to acquire the Securities. Optionee is acquiring these Securities for investment for Optionee’s own account only and not with a view to, or for
resale in connection with, any “distribution” thereof within the meaning of the Securities Act of 1933, as amended (the “Securities Act”). 
 (b) Optionee acknowledges and understands that the Securities constitute “restricted securities” under the Securities Act and have not been registered under the Securities Act in reliance upon a
specific exemption therefrom, which exemption depends upon, among other things, the bona fide nature of Optionee’s investment intent as expressed herein. In this connection, Optionee understands that, in the view of the Securities and Exchange
Commission, the statutory basis for such exemption may be unavailable if Optionee’s representation was predicated solely upon a present intention to hold these Securities for the minimum capital gains period specified under tax statutes, for a
deferred sale, for or until an increase or decrease in the market price of the Securities, or for a period of one year or any other fixed period in the future. Optionee further understands that the Securities must be held indefinitely unless they
are subsequently registered under the Securities Act or an exemption from such registration is available. Optionee further acknowledges and understands that the Company is under no obligation to register the Securities. Optionee understands that the
certificate evidencing the Securities will be imprinted with a legend which prohibits the transfer of the Securities unless they are registered or such registration is not required in the opinion of counsel satisfactory to the Company and any other
legend required under applicable state securities laws. 
 (c) Optionee is familiar with the provisions of Rule 701 and
Rule 144, each promulgated under the Securities Act, which, in substance, permit limited public resale of “restricted securities” acquired, directly or indirectly from the issuer thereof, in a non-public offering subject to the
satisfaction of certain conditions. Rule 701 provides that if the issuer qualifies under Rule 701 at the 

 
time of the grant of the Option to the Optionee, the exercise will be exempt from registration under the Securities Act. In the event the Company becomes subject to the reporting requirements of
Section 13 or 15(d) of the Securities Exchange Act of 1934, ninety (90) days thereafter (or such longer period as any market stand-off agreement may require) the Securities exempt under Rule 701 may be resold, subject to the
satisfaction of the applicable conditions specified by Rule 144, including in the case of affiliates (1) the availability of certain public information about the Company, (2) the amount of Securities being sold during any three
(3) month period not exceeding specified limitations, (3) the resale being made in an unsolicited “broker’s transaction”, transactions directly with a “market maker” or “riskless principal transactions”
(as those terms are defined under the Securities Exchange Act of 1934) and (4) the timely filing of a Form 144, if applicable. 
 In the event that the Company does not qualify under Rule 701 at the time of grant of the Option, then the Securities may be resold in certain limited circumstances subject to the provisions of
Rule 144, which may require (i) the availability of current public information about the Company; (ii) the resale to occur more than a specified period after the purchase and full payment (within the meaning of Rule 144) for the
Securities; and (iii) in the case of the sale of Securities by an affiliate, the satisfaction of the conditions set forth in sections (2), (3) and (4) of the paragraph immediately above. 

(d) Optionee further understands that in the event all of the applicable requirements of Rule 701 or 144 are not satisfied,
registration under the Securities Act, compliance with Regulation A, or some other registration exemption will be required; and that, notwithstanding the fact that Rules 144 and 701 are not exclusive, the Staff of the Securities and Exchange
Commission has expressed its opinion that persons proposing to sell private placement securities other than in a registered offering and otherwise than pursuant to Rules 144 or 701 will have a substantial burden of proof in establishing that an
exemption from registration is available for such offers or sales, and that such persons and their respective brokers who participate in such transactions do so at their own risk. Optionee understands that no assurances can be given that any such
other registration exemption will be available in such event. 
  

	
	Signature of Optionee:
	
	  

	
	Date:                     ,
        

  
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 EXHIBIT C 

COUNTERPART SIGNATURE PAGE 
 GIGAMON LLC 
 OPERATING AGREEMENT 

Instrument of Adherence 
 The undersigned hereby joins in and agrees to be bound by all the terms and provisions of the Operating Agreement, dated [    ], as further amended from time to time, and shall for all
purposes be deemed to be a Member thereunder. 
 Executed on this      day of
                ,         . 
  

			
	  

		
	Name:	 	  

			
		
	Address:	 	  

	
	  

  
 -3-

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