Document:

EX-10.1

 Exhibit 10.1   

INOGEN, INC. 

INDEMNIFICATION AGREEMENT 

This Indemnification Agreement (this “Agreement”) is dated as of [insert date] and is between Inogen, 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 fifteen percent (15%) 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, 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, 

  
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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(c), 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 (excluding any “parachute payments” within the meanings of Sections 280G and 4999 of the Internal Revenue Code of 1986, as amended); 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, then, subject to and in accordance with the requirements and process described in Section 10, 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, issuer 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 
 (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. 

  
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 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) [except as
provided in Section 15,] 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) for any reimbursement
of the Company by Indemnitee of any bonus or other incentive-based or equity-based compensation to the extent such reimbursement is required under Section 954 of the Dodd–Frank Wall Street Reform and Consumer Protection Act or any rules
adopted or promulgated thereunder or in connection therewith, but in any case only if Indemnitee is held liable therefor (including pursuant to any settlement arrangements); 

(e) 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 

(f) if prohibited by applicable law. 

8. Advances of Expenses; Audit of Expenses. 

(a) 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 

  
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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. 

(b) The Company shall have the right, from time to time and upon written request, to audit, review and inspect any and all Expenses for which
advancement, reimbursement and/or indemnification is sought (“Expense Audit”). Indemnitee will cooperate with the Company in the performance of any Expense Audit. In addition to other requests it may make in connection with any
Expense Audit, the Company may require that the Indemnitee provide to the Company receipts or other documentation sufficient, in the reasonable determination of this Company, to document and confirm that such Expenses are actual, complete, correct
and subject to the terms of this Agreement. If the Indemnitee fails to provide such documentation in a timely manner, the Company may reject Indemnitee’s request for indemnification, reimbursement and/or advancement of such Expenses. 

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. After 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
separate counsel to the extent (i) the employment of separate counsel by Indemnitee is authorized by the Company, (ii) Independent Counsel 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, or (iii) 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. In the event the Company is obligated to pay the fees and expenses of Indemnitee separate counsel pursuant to subsection
(i) above, the Company’s obligations to advance or indemnify Expenses for such separate counsel will be capped at $3 million unless and until the Board authorizes additional funding for such separate counsel. 

  
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 (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. 
 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 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 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 

  
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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
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) 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. 

(b) 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 (except that this shall not apply to the extent that the Indemnitee participated in the creating of such financial statements or otherwise
certified their completeness and/or veracity), (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(b) 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. 
 (c) 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. 

  
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 12. Remedies of Indemnitee. 

(a) Subject to Section 12(d), 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 (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 an 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 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. 
 (d) 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. [Primary Responsibility. The Company acknowledges that Indemnitee has
certain rights to indemnification and advancement of expenses provided by [insert name of fund] (the “Secondary Indemnitor”). The Company agrees that, as between the Company and the Secondary Indemnitor, the Company is
primarily responsible for amounts required to be indemnified or advanced under the Company’s certificate of incorporation or bylaws or this Agreement and any obligation of the Secondary Indemnitor to provide indemnification or advancement for
the same amounts is secondary to those Company obligations. To the extent not in contravention of any insurance policy or policies providing liability or other insurance for the Company or any director, trustee, general partner, managing member,
officer, employee, agent or fiduciary of the Company or any other Enterprise, the Company waives any right of contribution or subrogation against the Secondary Indemnitor with respect to the liabilities for which the Company is primarily responsible
under this Section 15. In the event of any payment by the Secondary Indemnitor of amounts otherwise required to be indemnified or advanced by the Company under the Company’s certificate of incorporation or bylaws or this Agreement, the
Secondary Indemnitor shall be subrogated to the extent of such payment to all of the rights of recovery of Indemnitee for indemnification or advancement of expenses under the Company’s certificate of incorporation or bylaws or this Agreement
or, to the extent such subrogation is unavailable and contribution is found to be the applicable remedy, shall have a right of contribution with respect to the amounts paid. The Secondary Indemnitor is an express third-party beneficiary of the terms
of this Section 15.] 
 16. No Duplication of Payments. [Except as provided in Section 15, t][T]he 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. 

  
 -10- 

 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. [Except as provided
in Section 15, i] [I]n 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 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 

  
 -11- 

 
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. 

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 326 Bollay Drive Goleta, California 93117, or at such other current address as the Company shall have furnished to Indemnitee, with a copy (which shall not
constitute notice) to Martin J. Waters, Esq., Wilson Sonsini Goodrich & Rosati, P.C., 12235 El Camino Real, Suite 200, San Diego, California 92130. 

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), or
(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. 

  
 -12- 

 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 Service 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, 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. 
  

	
	INOGEN, INC.
	
	  

	(Signature)
	
	  

	(Print name)
	
	  

	(Title)

  

	
	[INSERT INDEMNITEE NAME]
	
	  

	(Signature)
	
	  

	(Print name)
	
	  

	(Street address)
	
	  

	(City, State and ZIP)

 (Signature page to Indemnification Agreement)EX-10.2

 Exhibit 10.2 

INOGEN, INC. 
 2002
STOCK INCENTIVE PLAN 
 (As Amended Through July 25, 2005) 

This 2002 STOCK INCENTIVE PLAN (the “Plan”) is hereby established by Inogen, Inc., a Delaware corporation (the “Company”),
and adopted by its Board of Directors as of the 17th day of May, 2002 and effective as of the filing of the Company’s Amended and Restated Certificate of Incorporation on May 29, 2002 (the “Effective Date”), as amended by the
consent of the Board of Directors and the Company’s stockholders through July 25, 2005 to increase the aggregate number of shares reserved hereunder to 9,411,000 shares. 

ARTICLE 1. 
 PURPOSES OF
THE PLAN 
 1.1 Purposes. The purposes of the Plan are (a) to enhance the Company’s ability to attract and retain the
services of qualified employees, officers and directors (including non-employee officers and directors), and consultants and other service providers upon whose judgment, initiative and efforts the successful conduct and development of the
Company’s business largely depends, and (b) to provide additional incentives to such persons or entities to devote their utmost effort and skill to the advancement and betterment of the Company, by providing them an opportunity to
participate in the ownership of the Company and thereby have an interest in the success and increased value of the Company. 
 ARTICLE 2.

 DEFINITIONS 
 For
purposes of this Plan, the following terms shall have the meanings indicated: 
 2.1 Administrator. “Administrator” means
the Board or, if the Board delegates responsibility for any matter to the Committee, the term Administrator shall mean the Committee. 

2.2 Affiliated Company. “Affiliated Company” means any “parent corporation” or “subsidiary corporation”
of the Company, whether now existing or hereafter created or acquired, as those terms are defined in Sections 424(e) and 424(f) of the Code, respectively. 

2.3 Board. “Board” means the Board of Directors of the Company. 

2.4 Change in Control. “Change in Control” shall mean (i) the acquisition, directly or indirectly, in one transaction or
a series of related transactions, by any person or group (within the meaning of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended) of the beneficial ownership of securities of the Company possessing more than fifty percent
(50%) of the total combined voting power of all outstanding securities of the Company; (ii) a merger or consolidation in which the Company is not the surviving entity, except for a transaction in which the holders of the outstanding voting
securities of the Company immediately prior to such merger or consolidation hold, in the aggregate, securities possessing more than fifty percent (50%) of the total combined voting power of all outstanding voting securities of the surviving
entity immediately after such merger or consolidation; (iii) a reverse merger in which the Company is the surviving entity but in 

 
which securities possessing more than fifty percent (50%) of the total combined voting power of all outstanding voting securities of the Company are transferred to or acquired by a person or
persons different from the persons holding those securities immediately prior to such merger; (iv) the sale, transfer or other disposition (in one transaction or a series of related transactions) of all or substantially all of the assets of the
Company; or (v) the approval by the stockholders of a plan or proposal for the liquidation or dissolution of the Company. 
 2.5
Code. “Code” means the Internal Revenue Code of 1986, as amended from time to time. 
 2.6 Committee.
“Committee” means a committee of two or more members of the Board appointed to administer the Plan, as set forth in Section 7.1 hereof. 

2.7 Common Stock. “Common Stock” means the Common Stock of the Company, subject to adjustment pursuant to Section 4.2
hereof. 
 2.8 Consultant. “Consultant” means any consultant or advisor if: (i) the consultant or advisor renders bona
fide services to the Company or any Affiliated Company; (ii) the services rendered by the consultant or advisor are not in connection with the offer or sale of securities in a capital-raising transaction and do not directly or indirectly
promote or maintain a market for the Company’s securities; and (iii) the consultant or advisor is a natural person who has contracted directly with the Company or any Affiliated Company to render such services. 

2.9 Covered Employee. “Covered Employee” means the chief executive officer of the Company (or the individual acting in such
capacity) and the four (4) other individuals that are the highest compensated officers of the Company for the relevant taxable year for whom total compensation is required to be reported to stockholders under the Exchange Act. Provisions in
this Plan making reference to a Covered Employee shall apply only at such time that the Company is Publicly Held. 
 2.10 Disability.
“Disability” means permanent and total disability as defined in Section 22(e)(3) of the Code. The Administrator’s determination of a Disability or the absence thereof shall be conclusive and binding on all interested parties.

 2.11 Effective Date. “Effective Date” means the date on which the Plan is adopted by the Board, as set forth on the
first page hereof. 
 2.12 Exchange Act. “Exchange Act” means the Securities and Exchange Act of 1934, as amended. 

2.13 Exercise Price. “Exercise Price” means the purchase price per share of Common Stock payable upon exercise of an Option.

 2.14 Fair Market Value. “Fair Market Value” on any given date means the value of one share of Common Stock, determined
as follows: 
 (a) If the Common Stock is then listed or admitted to trading on a NASDAQ market system or a stock exchange which
reports closing sale prices, the Fair Market Value shall be the closing sale price on the date of valuation on such NASDAQ market system or principal stock exchange on which the Common Stock is then listed or admitted to trading, or, if no closing
sale 

  
 2 

 
price is quoted on such day, then the Fair Market Value shall be the closing sale price of the Common Stock on such NASDAQ market system or such exchange on the next preceding day for which a
closing sale price is reported. 
 (b) If the Common Stock is not then listed or admitted to trading on a NASDAQ market system or a
stock exchange which reports closing sale prices, the Fair Market Value shall be the average of the closing bid and asked prices of the Common Stock in the over-the-counter market on the date of valuation. 

(c) If neither (a) nor (b) is applicable as of the date of valuation, then the Fair Market Value shall be determined by the
Administrator in good faith using any reasonable method of evaluation, which determination shall be conclusive and binding on all interested parties. 

2.15 Incentive Option. “Incentive Option” means any Option designated and qualified as an “incentive stock option”
as defined in Section 422 of the Code. 
 2.16 Incentive Option Agreement. “Incentive Option Agreement” means an
Option Agreement with respect to an Incentive Option. 
 2.17 NASD Dealer. “NASD Dealer” means a broker-dealer that is a
member of the National Association of Securities Dealers, Inc. 
 2.18 Nonqualified Option. “Nonqualified Option” means any
Option that is not an Incentive Option. To the extent that any Option designated as an Incentive Option fails in whole or in part to qualify as an Incentive Option, including, without limitation, for failure to meet the limitations applicable to a
10% Stockholder or because it exceeds the annual limit provided for in Section 5.6 below, it shall to that extent constitute a Nonqualified Option. 

2.19 Nonqualified Option Agreement. “Nonqualified Option Agreement” means an Option Agreement with respect to a Nonqualified
Option. 
 2.20 Option. “Option” means any option to purchase Common Stock granted pursuant to the Plan. 

2.21 Option Agreement. “Option Agreement” means the written agreement entered into between the Company and the Optionee with
respect to an Option granted under the Plan. 
 2.22 Optionee. “Optionee” means a Participant who holds an Option. 

2.23 Participant. “Participant” means an individual or entity who holds an Option or Restricted Stock under the Plan. 

2.24 Publicly Held. “Publicly Held” means, with respect to the Company, any point in time in which any class of common equity
securities of the Company are required to be registered under Section 12 of the Exchange Act. 
 2.25 Purchase Price.
“Purchase Price” means the purchase price per share of Restricted Stock. 

  
 3 

 2.26 Restricted Stock. “Restricted Stock” means shares of Common Stock issued
pursuant to Article 6 hereof, subject to any restrictions and conditions as are established pursuant to such Article 6. 
 2.27
Service Provider. “Service Provider” means a Consultant or other natural person the Administrator authorizes to become a Participant in the Plan and who provides services to (i) the Company, (ii) an Affiliated Company, or
(iii) any other business venture designated by the Administrator in which the Company (or any entity that is a successor to the Company) or an Affiliated Company has a significant ownership interest. 

2.28 Stock Purchase Agreement. “Stock Purchase Agreement” means the written agreement entered into between the Company and a
Participant with respect to the purchase of Restricted Stock under the Plan. 
 2.29 10% Stockholder. “10%
Stockholder” means a person who, as of a relevant date, owns or is deemed to own (by reason of the attribution rules applicable under Section 424(d) of the Code) stock possessing more than 10% of the total combined voting power of all
classes of stock of the Company or of an Affiliated Company. 
 ARTICLE 3. 

ELIGIBILITY 
 3.1
Incentive Options. Only employees of the Company or of an Affiliated Company (including officers of the Company and members of the Board if they are employees of the Company or of an Affiliated Company) are eligible to receive Incentive Options
under the Plan. 
 3.2 Nonqualified Options and Restricted Stock. Employees of the Company or of an Affiliated Company,
officers of the Company and members of the Board (whether or not employed by the Company or an Affiliated Company), and Service Providers are eligible to receive Nonqualified Options or acquire Restricted Stock under the Plan. 

3.3 Section 162(m) Limitation. Subject to the provisions of Section 4.2, no employee of the Company or of an Affiliated
Company shall be eligible to be granted Options covering more than 500,000 shares of Common Stock during any calendar year. The foregoing shall not apply, however, until the first date upon which the Company is Publicly Held, and following the date
that the Company is Publicly Held, this Section 3.3 shall not apply until such time as required by Section 162(m) of the Code and the rules and regulations thereunder. 

ARTICLE 4. 
 PLAN SHARES

 4.1 Shares Subject to the Plan. A total of 9,411,000 shares of Common Stock may be issued under the Plan, subject to
adjustment as to the number and kind of shares pursuant to Section 4.2 hereof. For purposes of this limitation, in the event that (a) all or any portion of any Option or Restricted Stock granted or offered under the Plan can no longer
under any circumstances be exercised, or (b) any shares of Common Stock are reacquired by the Company which were initially the subject of an Incentive Option Agreement, Nonqualified Option Agreement or Stock Purchase 

  
 4 

 
Agreement, the shares of Common Stock allocable to the unexercised portion of such Option or such Stock Purchase Agreement, or the shares so reacquired, shall again be available for grant or
issuance under the Plan. 
 4.2 Changes in Capital Structure. In the event that the outstanding shares of Common Stock are hereafter
increased or decreased or changed into or exchanged for a different number or kind of shares or other securities of the Company by reason of a recapitalization, stock split, reverse stock split, combination of shares, reclassification, stock
dividend, or other change in the capital structure of the Company, then appropriate adjustments shall be automatically made to the aggregate number and kind of shares subject to this Plan, the number and kind of shares and the price per share
subject to outstanding Option Agreements and Stock Purchase Agreements and the limit on the number of shares under Section 3.3, all in order to preserve, as nearly as practical, but not to increase, the benefits to Participants. 

ARTICLE 5. 
 OPTIONS

 5.1 Option Agreement. Each Option granted pursuant to this Plan shall be evidenced by an Option Agreement that shall specify
the number of shares subject thereto, the Exercise Price per share, and whether the Option is an Incentive Option or Nonqualified Option. As soon as is practical following the grant of an Option, an Option Agreement shall be duly executed and
delivered by or on behalf of the Company to the Optionee to whom such Option was granted. Each Option Agreement shall be in such form and contain such additional terms and conditions, not inconsistent with the provisions of this Plan, as the
Administrator shall, from time to time, deem desirable, including, without limitation, the imposition of any rights of first refusal and resale obligations upon any shares of Common Stock acquired pursuant to an Option Agreement. Each Option
Agreement may be different from each other Option Agreement. 
 5.2 Exercise Price. The Exercise Price per share of Common
Stock covered by each Option shall be determined by the Administrator, subject to the following: (a) the Exercise Price of an Incentive Option shall not be less than 100% of Fair Market Value on the date the Incentive Option is granted,
(b) the Exercise Price of a Nonqualified Option shall not be less than 85% of Fair Market Value on the date the Nonqualified Option is granted, except for Nonqualified Options granted to Covered Employees where in such case the Exercise Price
shall not be less than 100% of Fair Market Value on such date, and (c) if the person to whom an Option is granted is a 10% Stockholder on the date of grant, the Exercise Price shall not be less than 110% of Fair Market Value on the date the
Option is granted. However, an Option may be granted with an exercise price lower than that set forth in the preceding sentence if such Option is granted pursuant to an assumption or substitution for another option in a manner satisfying the
provisions of Section 424 of the Code. 
 5.3 Payment of Exercise Price. Payment of the Exercise Price shall be made upon
exercise of an Option and may be made, in the discretion of the Administrator, subject to any legal restrictions, by: (a) cash; (b) check; (c) the surrender of shares of Common Stock acquired pursuant to the exercise of an Option
(provided that shares acquired pursuant to the exercise of options granted by the Company must have been held by the Optionee for the requisite period necessary to avoid a charge to the Company’s earnings for financial reporting purposes),
which surrendered shares shall be valued at Fair Market Value as of the date of such exercise; (d) the Optionee’s promissory note in a form and on terms acceptable to the Administrator, provided that an amount equal to at least the 

  
 5 

 
aggregate par value of the shares purchased upon exercise of an Option shall be paid in such other form of consideration permitted under the Delaware General Corporation Law; (e) the
cancellation of indebtedness of the Company to the Optionee; (f) the waiver of compensation due or accrued to the Optionee for services rendered; (g) provided that a public market for the Common Stock exists, a “same day sale”
commitment from the Optionee and an NASD Dealer whereby the Optionee irrevocably elects to exercise the Option and to sell a portion of the shares so purchased to pay for the Exercise Price and whereby the NASD Dealer irrevocably commits upon
receipt of such shares to forward the Exercise Price directly to the Company; (h) provided that a public market for the Common Stock exists, a “margin” commitment from the Optionee and an NASD Dealer whereby the Optionee irrevocably
elects to exercise the Option and to pledge the shares so purchased to the NASD Dealer in a margin account as security for a loan from the NASD Dealer in the amount of the Exercise Price, and whereby the NASD Dealer irrevocably commits upon receipt
of such shares to forward the Exercise Price directly to the Company; or (i) any combination of the foregoing methods of payment or any other consideration or method of payment as shall be permitted by applicable corporate law. 

5.4 Term and Termination of Options. The term and provisions for termination of each Option shall be as fixed by the Administrator, but
no Option may be exercisable more than ten (10) years after the date it is granted. An Incentive Option granted to a person who is a 10% Stockholder on the date of grant shall not be exercisable more than five (5) years after the date it
is granted.  
 5.5 Vesting and Exercise of Options. Each Option shall vest and become exercisable in one or more installments
at such time or times and subject to such conditions, including without limitation the achievement of specified performance goals or objectives, as shall be determined by the Administrator. An Option granted to an employee who is not an officer, a
director or Consultant of the Company must vest at a rate of at least 20% per year over a period of five years from the date of grant, subject to reasonable conditions such as continued employment. Notwithstanding the foregoing, to the extent
required by applicable law, each Option shall provide that the Optionee shall have the right to exercise the vested portion of any Option held at termination for at least 30 days following termination for any reason, and that the Optionee shall have
the right to exercise the Option for at least six months if such termination was due to the death or Disability of the Optionee. 

5.6 Annual Limit on Incentive Options. To the extent required for “incentive stock option” treatment under Section 422
of the Code, the aggregate Fair Market Value (determined as of the time of grant) of the Common Stock shall not, with respect to which Incentive Options granted under this Plan and any other plan of the Company or any Affiliated Company become
exercisable for the first time by an Optionee during any calendar year, exceed $100,000. 
 5.7 Nontransferability of Options.
No Option shall be assignable or transferable except by will or the laws of descent and distribution, and during the life of the Optionee shall be exercisable only by such Optionee. 

5.8 Rights as Stockholder. An Optionee or permitted transferee of an Option shall have no rights or privileges as a stockholder with
respect to any shares covered by an Option until such Option has been duly exercised and certificates representing shares purchased upon such exercise have been issued to such person. 

  
 6 

 5.9 Unvested Shares. The Administrator shall have the discretion to grant Options which
are exercisable for unvested shares of Common Stock. Should the Optionee cease being an employee, a Service Provider, an officer, director or Consultant of the Company while owning such unvested shares, the Company shall have the right to
repurchase, at the exercise price paid per share, any or all of those unvested shares. The terms upon which such repurchase right shall be exercisable (including the period and procedure for exercise and the appropriate vesting schedule for the
purchased shares) shall be established by the Administrator and set forth in the document evidencing such repurchase right. The Administrator may not impose a vesting schedule upon any Option grant or the shares of Common Stock subject to that
Option which is more restrictive than twenty percent (20%) per year vesting, with the initial vesting to occur not later than one (1) year after the Option grant date. However, such limitation shall not be applicable to any Option grants
made to individuals who are officers, directors or Consultants of the Company. 
 ARTICLE 6. 

RESTRICTED STOCK 
 6.1
Issuance and Sale of Restricted Stock. The Administrator shall have the right to issue shares of Common Stock subject to such terms, restrictions and conditions as the Administrator may determine at the time of grant (“Restricted
Stock”). Such conditions may include, but are not limited to, continued employment or the achievement of specified performance goals or objectives. The Purchase Price of Restricted Stock shall be determined by the Administrator, provided that
(a) the Purchase Price shall not be less than 85% of Fair Market Value of the stock on the date the Restricted Stock is granted or at the time the purchase is consummated, or (b) if the person to whom a right to purchase Restricted Stock
is granted is a 10% Stockholder on the date of grant, the Purchase Price shall not be less than 100% of Fair Market Value of the stock on the date the Restricted Stock is granted or at the time the purchase is consummated. 

6.2 Restricted Stock Purchase Agreements. A Participant shall have no rights with respect to the shares of Restricted Stock covered by
a Stock Purchase Agreement until the Participant has paid the full Purchase Price to the Company in the manner set forth in Section 6.3 hereof and has executed and delivered to the Company the Stock Purchase Agreement. Each Stock Purchase
Agreement shall be in such form, and shall set forth the Purchase Price and such other terms, conditions and restrictions of the Restricted Stock, not inconsistent with the provisions of this Plan, as the Administrator shall, from time to time, deem
desirable. Each Stock Purchase Agreement may be different from each other Stock Purchase Agreement. 
 6.3 Payment of Purchase
Price. Subject to any legal restrictions, payment of the Purchase Price may be made, in the discretion of the Administrator, by: (a) cash; (b) check; (c) the surrender of shares of Common Stock owned by the Participant that have
been held by the Participant for the requisite period necessary to avoid a charge to the Company’s earnings for financial reporting purposes, which surrendered shares shall be valued at Fair Market Value as of the date of such acceptance;
(d) the Participant’s promissory note in a form and on terms acceptable to the Administrator, provided that an amount equal to at least the aggregate par value of the shares purchased pursuant to a Stock Purchase Agreement shall be paid in
such other form of consideration permitted under the Delaware General Corporation Law; (e) the cancellation of indebtedness of the Company to the Participant; (f) the waiver of compensation due or accrued to the Participant for services
rendered; or (g) any combination of the foregoing methods of payment or any other consideration or method of payment as shall be permitted by applicable corporate law. 

  
 7 

 6.4 Rights as a Stockholder. Upon complying with the provisions of Section 6.2
hereof, a Participant shall have the rights of a stockholder with respect to the Restricted Stock purchased pursuant to a Stock Purchase Agreement, including voting and dividend rights, subject to the terms, restrictions and conditions as are set
forth in such Stock Purchase Agreement. Unless the Administrator shall determine otherwise, certificates evidencing shares of Restricted Stock shall remain in the possession of the Company until such shares have vested in accordance with the terms
of the Stock Purchase Agreement. 
 6.5 Restrictions. Shares of Restricted Stock may not be sold, assigned, transferred,
pledged or otherwise encumbered or disposed of except as specifically provided in the Stock Purchase Agreement. In the event of termination of a Participant’s employment, service as a director of the Company or Service Provider status for any
reason whatsoever (including death or disability), the Stock Purchase Agreement may provide, in the discretion of the Administrator, that the Company shall have the right, exercisable at the discretion of the Administrator, to repurchase (i) at
the original Purchase Price, any shares of Restricted Stock which have not vested as of the date of termination (provided that the right to repurchase at the original Purchase Price shall lapse at the rate of at least 20% per year over five
(5) years from the date of the Stock Purchase Agreement for Participants other than directors, officers and Consultants of the Company), and (ii) at Fair Market Value, any shares of Restricted Stock which have vested as of such date, on
such terms as may be provided in the Stock Purchase Agreement. 
 In any event, the right to repurchase must be exercised within
sixty (60) days of the termination of Participant’s Continuous Service and may be paid by the Company or its assignee, by cash, check, or cancellation of indebtedness within thirty (30) days of the expiration of the right to exercise.

 6.6 Vesting of Restricted Stock. The Stock Purchase Agreement shall specify the date or dates, the performance goals or objectives
which must be achieved, and any other conditions on which the Restricted Stock may vest. A Stock Purchase Agreement awarded to an employee who is not an officer, director, or Consultant of the Company must vest at a rate of at least 20% per
year over a period of five years from the date of grant, subject to reasonable conditions such as continued employment. 
 6.7
Dividends. If payment for shares of Restricted Stock is made by promissory note, any cash dividends paid with respect to the Restricted Stock may be applied, in the discretion of the Administrator, to repayment of such note. 

ARTICLE 7. 

ADMINISTRATION OF THE PLAN 

7.1 Administrator. Authority to control and manage the operation and administration of the Plan shall be vested in the Board, which may
delegate such responsibilities in whole or in part to a committee consisting of two (2) or more members of the Board (the “Committee”). Members of the Committee may be appointed from time to time by, and shall serve at the pleasure
of, the Board. The Board may limit the composition of the Committee to those persons necessary to comply with the requirements of Section 162(m) of the Code and Section 16 of the Exchange Act. As used herein, the term
“Administrator” means the Board or, with respect to any matter as to which responsibility has been delegated to the Committee, the term Administrator shall mean the Committee. 

  
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 7.2 Powers of the Administrator. In addition to any other powers or authority conferred
upon the Administrator elsewhere in the Plan or by law, the Administrator shall have full power and authority: (a) to determine the persons to whom, and the time or times at which, Incentive Options or Nonqualified Options or rights to purchase
Restricted Stock shall be granted, the number of shares to be represented by each Option and the number of shares of Restricted Stock to be offered, and the consideration to be received by the Company upon the exercise of such Options or sale of
such Restricted Stock; (b) to interpret the Plan; (c) to create, amend or rescind rules and regulations relating to the Plan; (d) to determine the terms, conditions and restrictions contained in, and the form of, Option Agreements and
Stock Purchase Agreements; (e) to determine the identity or capacity of any persons who may be entitled to exercise a Participant’s rights under any Option or Stock Purchase Agreement under the Plan; (f) to correct any defect or
supply any omission or reconcile any inconsistency in the Plan or in any Option Agreement or Stock Purchase Agreement; (g) to accelerate the vesting of any Option or release or waive any repurchase rights of the Company with respect to
Restricted Stock; (h) to extend the exercise date of any Option or acceptance date of any Restricted Stock; (i) to provide for rights of first refusal and/or repurchase rights; (j) to amend outstanding Option Agreements and Stock
Purchase Agreements to provide for, among other things, any change or modification which the Administrator could have included in the original Agreement or in furtherance of the powers provided for herein; and (k) to make all other
determinations necessary or advisable for the administration of the Plan, but only to the extent not contrary to the express provisions of the Plan. Any action, decision, interpretation or determination made in good faith by the Administrator in the
exercise of its authority conferred upon it under the Plan shall be final and binding on the Company and all Participants. 
 7.3
Limitation on Liability. No employee of the Company or member of the Board or Committee shall be subject to any liability with respect to duties under the Plan unless the person acts fraudulently or in bad faith. To the extent permitted by law,
the Company shall indemnify each member of the Board or Committee, and any employee of the Company with duties under the Plan, who was or is a party, or is threatened to be made a party, to any threatened, pending or completed proceeding, whether
civil, criminal, administrative or investigative, by reason of such person’s conduct in the performance of duties under the Plan. 

ARTICLE 8. 
 CHANGE IN
CONTROL 
 8.1 Change in Control. In order to preserve a Participant’s rights in the event of a Change in Control of the
Company: 
 (a) Vesting of all outstanding Options shall accelerate automatically effective as of immediately prior to the
consummation of the Change in Control unless the Options are to be assumed by the acquiring or successor entity (or parent thereof) or new options or New Incentives are to be issued in exchange therefor, as provided in subsection (b) below. 

(b) Vesting of outstanding Options shall not accelerate if and to the extent that: (i) the Options (including the unvested portion
thereof) are to be assumed by the acquiring or successor entity (or parent thereof) or new options of comparable value are to be issued in exchange 

  
 9 

 
therefor pursuant to the terms of the Change in Control transaction, or (ii) the Options (including the unvested portion thereof) are to be replaced by the acquiring or successor entity (or
parent thereof) with other incentives of comparable value under a new incentive program (“New Incentives”) containing such terms and provisions as the Administrator in its discretion may consider equitable. If outstanding Options are
assumed, or if new options of comparable value are issued in exchange therefor, then each such Option or new option shall be appropriately adjusted, concurrently with the Change in Control, to apply to the number and class of securities or other
property that the Participant would have received pursuant to the Change in Control transaction in exchange for the shares issuable upon exercise of the Option had the Option been exercised immediately prior to the Change in Control, and appropriate
adjustment also shall be made to the Exercise Price such that the aggregate Exercise Price of each such Option or new option shall remain the same as nearly as practicable. 

(c) If any Option is assumed by an acquiring or successor entity (or parent thereof) or a new option of comparable value or New
Incentive is issued in exchange therefor pursuant to the terms of a Change in Control transaction, then vesting of the Option, the new option or the New Incentive shall accelerate if and at such time as the Participant’s service as an employee,
director, officer, consultant or other service provider to the acquiring or successor entity (or a parent or subsidiary thereof) is terminated involuntarily or voluntarily under certain circumstances within a specified period following consummation
of the Change in Control, pursuant to such terms and conditions as shall be set forth in the Option Agreement. 
 (d) If outstanding
Options will accelerate pursuant to subsection (a) above, the Administrator in its discretion may provide, in connection with the Change in Control transaction, for the purchase or exchange of each Option for an amount of cash or other property
having a value equal to the difference (or “spread”) between: (x) the value of the cash or other property that the Participant would have received pursuant to the Change in Control transaction in exchange for the shares issuable upon
exercise of the Option had the Option been exercised immediately prior to the Change in Control, and (y) the Exercise Price of the Option. 

(e) In the event of a Change in Control of the Company, all Repurchase Rights shall automatically terminate immediately prior to the
consummation of such Change in Control, and the shares of Common Stock subject to such terminated Repurchase Rights shall immediately vest in full, except to the extent that: (i) in connection with such Change in Control, the acquiring or
successor entity (or parent thereof) provides for the continuance or assumption of Stock Purchase Agreements or the substitution of new agreements of comparable value covering shares of a successor corporation, with appropriate adjustments as to the
number and kind of shares and purchase price, or (ii) such accelerated vesting is precluded by other limitations imposed by the Administrator in the Stock Purchase Agreement at the time the Restricted Stock is issued. 

(f) If, upon a Change in Control, the acquiring or successor entity (or parent thereof) provides for the continuance or assumption of
any Stock Purchase Agreement or the substitution of new agreements of comparable value covering shares of a successor corporation (with appropriate adjustments as to the number and kind of shares and purchase price), then any Repurchase Right
provided for in such Stock Purchase Agreement shall terminate, and the shares of Common Stock subject to the terminated Repurchase Right or any substituted shares shall immediately vest in full, if the Participant’s service as an employee,
director, officer, consultant or other service provider to the acquiring or successor entity (or a parent or subsidiary thereof) is terminated involuntarily or voluntarily under certain circumstances within a specified period following consummation
of a Change in Control pursuant to such terms and conditions as shall be set forth in the Stock Purchase Agreement. 

  
 10 

 (g) The Administrator shall have the discretion to provide in each option Agreement or
Stock Purchase Agreement terms and conditions that relate to (i) vesting of such Option or Restricted Stock in the event of a Change in Control, and (ii) assumption of such Options or Stock Purchase Agreements or issuance of comparable
securities or New Incentives in the event of a Change in Control. The aforementioned terms and conditions may vary in each Option and Stock Purchase Agreement, and may be different from the provisions set forth in Sections 8.1(a) - 8.1(f) above.

 (h) Outstanding Options shall terminate and cease to be exercisable upon consummation of a Change in Control except to the extent
that the Options are assumed by the successor entity (or parent thereof) or new options of comparable value or New Incentives are issued in exchange therefor pursuant to the terms of the Change in Control transaction. 

(i) The Administrator shall cause written notice of a proposed Change in Control transaction to be given to Participants not less than
fifteen (15) days prior to the anticipated effective date of the proposed transaction. 
 ARTICLE 9. 

AMENDMENT AND TERMINATION OF THE PLAN 

9.1 Amendments. The Board may from time to time alter, amend, suspend or terminate the Plan in such respects as the Board may deem
advisable. No such alteration, amendment, suspension or termination shall be made which shall substantially affect or impair the rights of any Participant under an outstanding Option Agreement or Stock Purchase Agreement without such
Participant’s consent. The Board may alter or amend the Plan to comply with requirements under the Code relating to Incentive Options or other types of options which give Optionees more favorable tax treatment than that applicable to Options
granted under this Plan as of the date of its adoption. Upon any such alteration or amendment, any outstanding Option granted hereunder may, if the Administrator so determines and if permitted by applicable law, be subject to the more favorable tax
treatment afforded to an Optionee pursuant to such terms and conditions. 
 9.2 Plan Termination. Unless the Plan shall
theretofore have been terminated, the Plan shall terminate on the tenth (10th) anniversary of the Effective Date and no Options or Restricted Stock may be granted under the Plan thereafter, but Option Agreements and Stock Purchase Agreements
then outstanding shall continue in effect in accordance with their respective terms. 
 ARTICLE 10. 

TAX WITHHOLDING 
 10.1
Withholding. The Company shall have the power to withhold, or require a Participant to remit to the Company, an amount sufficient to satisfy any applicable Federal, state, and local tax withholding requirements with respect to any Options
exercised or Restricted Stock issued under the Plan. To the extent permissible under applicable tax, securities and other laws, the Administrator may, in its sole discretion and upon such terms and conditions as it may deem 

  
 11 

 
appropriate, permit a Participant to satisfy his or her obligation to pay any such tax, in whole or in part, up to an amount determined on the basis of the highest marginal tax rate applicable to
such Participant, by (a) directing the Company to apply shares of Common Stock to which the Participant is entitled as a result of the exercise of an Option or as a result of the purchase of or lapse of restrictions on Restricted Stock or
(b) delivering to the Company shares of Common Stock owned by the Participant. The shares of Common Stock so applied or delivered in satisfaction of the Participant’s tax withholding obligation shall be valued at their Fair Market Value as
of the date of measurement of the amount of income subject to withholding. 
 ARTICLE 11. 

MISCELLANEOUS 
 11.1
Benefits Not Alienable. Other than as provided above, benefits under the Plan may not be assigned or alienated, whether voluntarily or involuntarily. Any unauthorized attempt at assignment, transfer, pledge or other disposition shall be without
effect. 
 11.2 No Enlargement of Employee Rights. This Plan is strictly a voluntary undertaking on the part of the Company
and shall not be deemed to constitute a contract between the Company and any Participant to be consideration for, or an inducement to, or a condition of, the employment of any Participant. Nothing contained in the Plan shall be deemed to give the
right to any Participant to be retained as an employee of the Company or any Affiliated Company or to limit the right of the Company or any Affiliated Company to discharge any Participant at any time. 

11.3 Application of Funds. The proceeds received by the Company from the sale of Common Stock pursuant to Option Agreements and Stock
Purchase Agreements, except as otherwise provided herein, will be used for general corporate purposes. 
 11.4 Annual and Other
Periodic Reports. To the extent required by Section 260.140.46 of Title 10 of the California Code of Regulations, the Company shall provide to each Participant, not less frequently than annually during the period such Participant has one or
more Options or rights to purchase Restricted Stock outstanding, and in the case of an individual who acquires shares pursuant to the Plan, during the period such individual owns such shares, copies of annual financial statements. Notwithstanding
the preceding sentence, the Company shall not be required to provide such statements to key employees whose duties in connection with the Company assure their access to equivalent information. 

11.5 Stockholder Approval. The Company shall obtain stockholder approval of the Plan within twelve (12) months before or after the
adoption of the Plan by the Board of Directors. 

  
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 Amendment No. 1 to the 2002 Stock Incentive Plan 

Section 4.1 of the 2002 STOCK INCENTIVE PLAN of INOGEN, INC., a Delaware corporation, is hereby amended and restated in full as follows:

 “4.1 Shares Subject to the Plan. A total of 3,300,000 shares of Common Stock may be issued under the
Plan, subject to adjustment as to the number and kind of shares pursuant to Section 4.2 hereof. For purposes of this limitation, in the event that (a) all or any portion of any Option or Restricted Stock granted or offered under the Plan
can no longer under any circumstances be exercised, or (b) any shares of Common Stock are reacquired by the Company which were initially the subject of an Incentive Option Agreement, Nonqualified Option Agreement or Stock Purchase Agreement,
the shares of Common Stock allocable to the unexercised portion of such Option or such Stock Purchase Agreement, or the shares so reacquired, shall again be available for grant or issuance under the Plan.” 

Except as stated above, all terms and conditions for the 2002 STOCK INCENTIVE PLAN shall remain in full force and effect. 

 Amendment No. 2 to Amended 2002 Stock Incentive Plan 

Section 4.1 of the AMENDED 2002 STOCK INCENTIVE PLAN of INOGEN, INC., a Delaware corporation, is hereby amended and restated in full as
follows: 
 “4.1 Shares Subject to the Plan. A total of 5,440,000 shares of Common Stock may be issued
under the Plan, subject to adjustment as to the number and kind of shares pursuant to Section 4.2 hereof. For purposes of this limitation, in the event that (a) all or any portion of any Option or Restricted Stock granted or offered under
the Plan can no longer under any circumstances be exercised, or (b) any shares of Common Stock are reacquired by the Company which were initially the subject of an Incentive Option Agreement, Nonqualified Option Agreement or Stock Purchase
Agreement, the shares of Common Stock allocable to the unexercised portion of such Option or such Stock Purchase Agreement, or the shares so reacquired, shall again be available for grant or issuance under the Plan.” 

Except as stated above, all terms and conditions for the AMENDED 2002 STOCK INCENTIVE PLAN shall remain in full force and effect. 

 Amendment No. 3 to the Amended 2002 Stock Incentive Plan 

Section 4.1 of the AMENDED 2002 STOCK INCENTIVE PLAN of INOGEN, INC., a Delaware corporation, is hereby amended and restated in full as
follows: 
 “4.1 Shares Subject to the Plan. A total of 6,940,000 shares of Common Stock may be issued
under the Plan, subject to adjustment as to the number and kind of shares pursuant to Section 4.2 hereof. For purposes of this limitation, in the event that (a) all or any portion of any Option or Restricted Stock granted or offered under
the Plan can no longer under any circumstances be exercised, or (b) any shares of Common Stock are reacquired by the Company which were initially the subject of an Incentive Option Agreement, Nonqualified Option Agreement or Stock Purchase
Agreement, the shares of Common Stock allocable to the unexercised portion of such Option or such Stock Purchase Agreement, or the shares so reacquired, shall again be available for grant or issuance under the Plan.” 

Except as stated above, all terms and conditions for the AMENDED 2002 STOCK INCENTIVE PLAN shall remain in full force and effect. 

 Amendment No. 4 to the Amended 2002 Stock Incentive Plan 

Section 4.1 of the AMENDED 2002 STOCK INCENTIVE PLAN of INOGEN, INC., a Delaware corporation, is hereby amended and restated in full as
follows: 
 “4.1 Shares Subject to the Plan. A total of 9,411,000 shares of Common Stock may be issued
under the Plan, subject to adjustment as to the number and kind of shares pursuant to Section 4.2 hereof. For purposes of this limitation, in the event that (a) all or any portion of any Option or Restricted Stock granted or offered under
the Plan can no longer under any circumstances be exercised, or (b) any shares of Common Stock are reacquired by the Company which were initially the subject of an Incentive Option Agreement, Nonqualified Option Agreement or Stock Purchase
Agreement, the shares of Common Stock allocable to the unexercised portion of such Option or such Stock Purchase Agreement, or the shares so reacquired, shall again be available for grant or issuance under the Plan.” 

Except as stated above, all terms and conditions for the AMENDED 2002 STOCK INCENTIVE PLAN shall remain in full force and effect. 

 Amendment No. 5 to the Amended 2002 Stock Incentive Plan 

Section 4.1 of the AMENDED 2002 STOCK INCENTIVE PLAN (the “Plan”); of INOGEN, INC., a Delaware corporation, is hereby amended
and restated in full as follows: 
 “4.1 Shares Subject to the Plan. A total of 33,478,672 shares of Common Stock
may be issued under the Plan, subject to adjustment as to the number and kind of shares pursuant to Section 4.2 hereof. For purposes of this limitation, in the event that (a) all or any portion of any Option or Restricted Stock granted or
offered under the Plan can no longer under any circumstances be exercised, or (b) any shares of Common Stock are reacquired by the Company which were initially the subject of an Incentive Option Agreement, Nonqualified Option Agreement or Stock
Purchase Agreement under the Plan, the shares of Common Stock allocable to the unexercised portion of such Option or Stock Purchase Agreement, or the shares so reacquired, shall again be available for grant or issuance under the Plan.” 

Except as stated above, all terms and conditions for the AMENDED 2002 STOCK INCENTIVE PLAN shall remain in full force and effect.

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