AMENDED AND RESTATED EMPLOYMENT AGREEMENT

a.Executive shall bear all expense of, and be solely responsible for, any excise tax imposed by Section 4999 of the Code (such excise tax being the “Excise Tax”); provided, however, that any payment or benefit received or to be received by Executive, whether payable under the terms of this Agreement or any other plan, arrangement or agreement with Company or an affiliate of Company (collectively, the “Payments”) that would constitute a “parachute payment” within the meaning of Section 280G of the Code, shall be reduced to the extent necessary so that no portion thereof shall be subject to the Excise Tax, but only if, by reason of such reduction, the net after-tax benefit Executive receives shall exceed the net after-tax benefit that Executive would receive if no such reduction was made.

b.The “net after-tax benefit” shall mean (i) the Payments which Executive receives or is then entitled to receive from the Company that would constitute “parachute payments” within the meaning of Section 280G of the Code, less (ii) the amount of all federal, state and local income and employment taxes payable by Executive with respect to the foregoing calculated at the highest marginal income tax rate for each year in which the foregoing shall be paid to Executive (based on the rate in effect for such year as set forth in the Code as in effect at the time of the first payment of the foregoing), less (iii) the amount of Excise Tax imposed with respect to the payments and benefits described in (b)(i) above.

c.All determinations under this Section 7 will be made by an accounting firm or law firm (the “280G Firm”) that is mutually agreed to by Executive and the Company prior to a change in ownership or control of a corporation (within the meaning of Treasury regulations under Section 280G of the Code). The 280G Firm shall be required to evaluate the extent to which payments are exempt from Section 280G of the Code as reasonable compensation for services rendered before or after the Change of Control. All fees and expenses of the 280G Firm shall be paid solely by the Company. The Company will direct the 280G Firm to submit any determination it makes under this Section 7 and detailed supporting calculations to both Executive and the Company as soon as reasonably practicable.

d.If the 280G Firm determines that one or more reductions are required under this Section 7, such Payments shall be reduced in the order that would provide Executive with the largest amount of after-tax proceeds (with such order, to the extent permitted by Sections 280G and 409A of the Code, designated by Executive, or otherwise determined by the 280G Firm) to the extent necessary so that no portion thereof shall be subject to the Excise Tax, and the Company shall pay such reduced amount to Executive. Executive shall at any time have the unilateral right to forfeit any equity award in whole or in part.

e.As a result of the uncertainty in the application of Section 280G of the Code at the time that the 280G Firm makes its determinations under this Section 7, it is

possible that amounts will have been paid or distributed to Executive that should not have been paid or distributed (collectively, the “Overpayments”), or that additional amounts should be paid or distributed to Executive (collectively, the “Underpayments”). If the 280G Firm determines, based on either the assertion of a deficiency by the Internal Revenue Service against Executive or the Company, which assertion the 280G Firm believes has a high probability of success or is otherwise based on controlling precedent or substantial authority, that an Overpayment has been made, Executive must repay the Overpayment to the Company, without interest; provided, however, that no loan will be deemed to have been made and no amount will be payable by Executive to the Company unless, and then only to the extent that, the deemed loan and payment would either reduce the amount on which Executive is subject to tax under Section 4999 of the Code or generate a refund of tax imposed under Section 4999 of the Code. If the 280G Firm determines, based upon controlling precedent or substantial authority, that an Underpayment has occurred, the 280G Firm will notify Executive and the Company of that determination, and the Company will promptly pay the amount of that Underpayment to Executive without interest.

f.Executive and the Company will provide the 280G Firm access to and copies of any books, records, and documents in their possession as reasonably requested by the 280G Firm, and otherwise cooperate with the 280G Firm in connection with the preparation and issuance of the determinations and calculations contemplated by this Section 7. For purposes of making the calculations required by this Section 7, the 280G Firm may rely on reasonable, good faith interpretations concerning the application of Sections 280G and 4999 of the Code.

b.. Executive agrees that Executive will not, directly or indirectly, use, make available, sell, disclose or otherwise communicate to any person or entity, other than in the course of Executive’s assigned duties hereunder and for the benefit of the Employer, either while Executive is employed by the Company hereunder or at any time thereafter, any business and technical information or trade secrets, nonpublic, proprietary or confidential information, knowledge or data relating to the Employer whether the foregoing will have been obtained by Executive during Executive’s employment hereunder or otherwise. The foregoing will not apply to information that (i) was known to the public prior to its disclosure to Executive; (ii) becomes generally known to the public or in the Employer’s industry subsequent to disclosure to Executive through no wrongful act by Executive or any of Executive’s representatives; or (iii) Executive is required to disclose by applicable law, regulation or legal process (provided that Executive provides the Company with prior notice of the contemplated disclosure and cooperates at the Company’s cost with the Company in seeking a protective order or other appropriate protection of such information). The Company and Executive acknowledge that, notwithstanding anything to the contrary contained in this Agreement, pursuant to 18 USC § 1833(b), an individual may not be held liable under any criminal or civil federal or state trade secret law for disclosure of a trade secret: (i) made in confidence to a government official, either directly or indirectly, or to an attorney, solely for the purpose of reporting or investigating a suspected violation of law or (ii) in a complaint or other document filed in a lawsuit or other proceeding, if such filing is made under seal. The Company and Executive further acknowledge that an individual suing an employer for retaliation based on the reporting of a suspected violation of law may disclose a trade secret to his attorney and use the trade secret information in the court proceeding, so long as any document containing the trade secret is filed under seal and the individual does not disclose the trade secret except pursuant to court order.

i.The payments and benefits under this Agreement are intended to comply with or be exempt from Section 409A of the Code, and the regulations and guidance promulgated thereunder (collectively, “Section 409A”) and this Agreement shall be interpreted and construed in a manner intended to comply therewith. For purposes of this Agreement, Executive will be considered to have experienced a termination of employment only if Executive has a “separation from service” with the Company and all of its controlled group members within the meaning of Section 409A. Whether Executive has a separation from service will be determined based on all of the facts and circumstances and in accordance with the guidance issued under Section 409A.

ii.Each payment under this Agreement, including each installment payment, shall be considered a separate and distinct payment. For purposes of this Agreement, each payment is intended to be excepted from Section 409A to the maximum extent provided as follows: (i) each payment made within the applicable 2½ month period specified in Treas. Reg. § 1.409A-1(b)(4) is intended to be excepted under the short-term deferral exception; (ii) post-termination medical benefits are intended to be excepted under the medical benefits exception as specified in Treas. Reg. §1.409A-1(b)(9)(v)(B); and (iii) to the extent payments are made as a result of an involuntary separation, each payment that is not otherwise excepted under the short-term deferral exception or medical benefits exception is intended to be excepted under the involuntary pay exception as specified in Treas. Reg. § 1.409A-1(b)(9)(iii). With respect to payments subject to Section 409A (and not excepted therefrom), if any, it is intended that each payment is paid on a permissible distribution event and at a specified time consistent with Section 409A. Neither the Company nor Executive shall have the right to accelerate or defer the delivery of any such payments or benefits except to the extent specifically permitted or required by Section 409A. Executive shall have no right to designate the date or any payment under this Agreement.

iii.If Executive is a “specified employee” (as that term is used in Section 409A and regulations and other guidance issued thereunder) on the date of Executive’s separation from service, any benefits payable under this Agreement that constitute non-qualified deferred compensation subject to Section 409A shall be delayed until the earlier of (i) the first business day following the six-month anniversary of the date of Executive’s separation from service, or (ii) the date of Executive’s death, but only to the extent necessary to avoid the adverse tax consequences and penalties under Section 409A. On the earlier of (x) the first business day following the six-month anniversary of the date of Executive’s separation from service, or (y) Executive’s death, the Company shall pay Executive (or Executive’s estate or beneficiaries) a lump-sum payment equal to all payments delayed pursuant to the preceding sentence.

iv.If any of the reimbursements or in-kind benefits provided for under this Agreement are subject to Section 409A, the following rules shall apply: (i) in no event shall any such reimbursement be paid after the last day of the taxable year

following the taxable year in which the expense was incurred; (ii) the amount of such reimbursable expenses incurred, or the provision of in-kind benefits, in one tax year shall not affect the expenses eligible for reimbursement or the provision of in-kind benefits in any other tax year; and (iii) the right to such reimbursement for expenses or provision of in-kind benefits is not subject to liquidation or exchange for any other benefit.

v.Notwithstanding anything in Section 6(f) hereof to the contrary, in the event that Executive is entitled to the amount set forth in Section 6(f)(i) as a result of a termination of Executive’s employment within three (3) months prior to or eighteen (18) months after the date of the Change of Control, and such Change of Control does not constitute a change in ownership or effective control of the Company, or in the ownership of a substantial portion of the assets of the Company, within the meaning of Section 409A(a)(2)(A)(v) of the Code and its corresponding regulations, and any portion of the severance benefit payable to Executive pursuant to Section 6(e)(i) is deemed to constitute deferred compensation subject to the requirements of Section 409A of the Code at the time of Executive’s termination, then such portion that constitutes deferred compensation shall reduce the amount that is paid in a lump sum as provided in Section 6(f)(i) and such deferred compensation portion shall instead be paid in substantially equal installments over the installment period as described in Section 6(e)(i).

This RELEASE AGREEMENT (“Agreement”) made this [•] day of [•], [•] (the “Effective Date”), between OptiNose US, Inc. (a wholly-owned subsidiary of OptiNose, Inc. and, together with OptiNose, Inc. and each of its and their successors and assigns, the “Company”), and [•] (“Executive”).

1.Release.

a. In consideration of the amounts to be paid by the Company pursuant to the Employment Agreement entered into on March 2, 2022, by and between the Company and Executive (the “Employment Agreement”), Executive, on behalf of himself and on behalf of his spouse, civil union or domestic partner, dependents, heirs, executors, devisees, personal representatives, administrators, agents and assigns, irrevocably and unconditionally forever waives, releases, gives up and discharges the Company, its parent, affiliated and related companies (including but not limited to OptiNose, Inc.), all of its and their employee benefit plans and trustees, fiduciaries, administrators, sponsors and parties-in-interest of those plans, all of its and their past and present employees, managers, directors, officers, administrators, shareholders, members, investors, agents, attorneys, insurers, re-insurers and contractors acting in any capacity whatsoever (whether individually or in an official capacity on behalf of the Company), and all of its and their respective predecessors, heirs, personal representatives, successors and assigns (collectively, the “Released Parties”), from any and all debts, demands, actions, causes of action, accounts, covenants, contracts, agreements, claims, damages, omissions, promises, and any and all claims and liabilities whatsoever, of every name and nature, known or unknown, suspected or unsuspected, accrued or unaccrued, liquidated or contingent, asserted or unasserted, both in law and equity (“Claims”), which Executive ever had, now has, or may hereafter claim to have against the Released Parties by reason of any matter or cause whatsoever based on, related to, or arising from any event that occurred before the date Executive signs this Agreement and based upon, related to or arising out of or in any way concerning Executive’s employment with the Company, the terms, conditions or privileges of Executive’s employment with the Company, Executive’s separation from employment with the Company, and any and all violations and/or alleged violations of federal, state or local human rights laws, fair employment practices and/or other laws by any of the Released Parties for any reason and under any legal theory including, but not limited to, those arising or which may be arising under, as applicable, Title VII of the Civil Rights Act of 1964 (“Title VII”), the Americans with Disabilities Act (“ADA”), the Age Discrimination in Employment Act (“ADEA”), the Older Worker Benefit Protection Act (“OWBPA”), the Employee Retirement Income Security Act of 1974 (“ERISA”), the Employee Polygraph Protection Act, the Worker Adjustment and Retraining Notification Act (“WARN”), the Family and Medical Leave Act (“FMLA”), the Coronavirus Aid, Relief and Economic Security Act (“CARES”), the Families First Coronavirus Relief Act (“FFCRA”), the American Rescue Plan Act, the Fair Labor Standards Act (“FLSA”), the Equal Pay Act of 1963 (“EPA”), the Lilly Ledbetter Fair Pay Act of 2010 (“Fair Pay Act”), the Genetic Information Nondiscrimination Act of 2008 (“GINA”), the Rehabilitation Act, the Employee Polygraph Protection Act, the Electronic Communication Privacy Act, the Computer Fraud & Abuse Act, the Health Insurance Portability & Accountability Act (“HIPAA”), the Consolidated Omnibus Budget Reconciliation Act (“COBRA”), the Occupational Safety and Health Act (“OSHA”), the Sarbanes-Oxley Act of 2002, the Fair Credit Reporting Act (“FCRA”), the National Labor Relations Act (“NLRA”), the Labor Management Relations Act (“LMRA”), the Uniformed Services Employment and Reemployment Rights Act of 1994 (“USERRA”), the Civil Rights Act of 1991, 42 U.S.C. §§ 1981, 1983, 1985, 1986 and 1988), the Pennsylvania Wage Payment & Collection Law, the Pennsylvania Human Relations Act, the Pennsylvania Labor Relations Act, the Pennsylvania

Equal Pay Law, the Pennsylvania Minimum Wage Act, the Pennsylvania Workers’ Compensation Act, any personal gain with respect to any claim arising under the Federal False Claims Act, or any other federal, state or local laws, statutes, regulations, rules, ordinances, or orders, each as amended, or under any policy, agreement, contract, understanding or promise, written or oral, formal or informal, between any of the Released Parties and Executive and shall further apply, without limitation, to any and all Claims for breach of implied or express contract, breach of promise, breach of the covenant of good faith and fair dealing, misrepresentation, tortious interference with contract, civil conspiracy, negligence, fraud, estoppel, defamation, libel, misrepresentation, intentional infliction of emotional distress, violation of public policy, invasion of privacy, wrongful, retaliatory or constructive discharge, assault, battery, false imprisonment, negligence, and all other claims or torts, including any whistleblower claims, arising under any federal, state, or local law, regulation, ordinance or judicial decision, or under the United States and Pennsylvania Constitutions (the “General Release”).

b. For the purpose of implementing a full and complete release, Executive understands and agrees that this Agreement is intended to include all claims, if any, which Executive or his spouse, civil union or domestic partner, dependents, heirs, executors, devisees, personal representatives, administrators, agents and assigns may have and which Executive does not now know or suspect to exist in his favor against the Released Parties, from the beginning of time until the time he signs this Agreement, and this Agreement extinguishes those claims.

c. In consideration of the promises of the Company set forth in the Employment Agreement, Executive hereby releases and discharges the Released Parties from any and all Claims that Executive may have against the Released Parties arising under the Age Discrimination Employment Act of 1967, as amended, and the applicable rules and regulations promulgated thereunder (“ADEA”). Executive acknowledges that he understands that the ADEA is a federal statute that prohibits discrimination on the basis of age in employment, benefits and benefit plans. Executive also understands that, by signing this Agreement, he is waiving all Claims against any and all of the Released Parties.

1.Exclusions from Release of Claims and Covenant Not to Sue.

1.Non-Admission of Liability.

1.No Right or Guarantee to Re-Employment or Reinstatement. Executive agrees that the termination of his employment is permanent and the Released Parties have not in any way guaranteed that he will be recalled, rehired, reinstated or in any way retained by the Company.

1.Reference-Related Communications.

1.Consultation with Attorney; Voluntary Agreement. The Company advises Executive to consult with an attorney of his choosing prior to signing this Agreement. Executive understands and agrees that he has the right and has been given the opportunity to review this Agreement and, specifically, the General Release in Section 1 above, with an attorney. Executive also understands and agrees that he is under no obligation to consent to the General Release set forth in Section 1 above. Executive acknowledges and agrees that the payments to be made to Executive pursuant to the Employment Agreement are sufficient consideration to require him to abide with his obligations under this Agreement, including but not limited to the General Release set forth in Section 1. Executive represents that he has read this Agreement, including the General Release set forth in Section 1, and understands its terms and that he enters into this Agreement freely, voluntarily, and without coercion.

1.Effective Date; Revocation. Executive acknowledges and represents that he has been given forty-five (45) days following the termination of his employment during which to review and consider the provisions of this Agreement and, specifically, the General Release set forth in Section 1 above. Executive further acknowledges and represents that he has been advised by the Company that he has the right to revoke this Agreement for a period of seven (7) days after signing it. Executive acknowledges and agrees that, if he wishes to revoke this Agreement, he must do so in a writing, signed by him and received by the Company no later than 5:00 p.m. Eastern Time on the seventh (7th) day of the revocation period. If no such revocation occurs, the General Release and this Agreement

shall become effective on the eighth (8th) day following his execution of this Agreement and shall be final and binding on Executive.

2.Severability. In the event that any one or more of the provisions of this Agreement shall be held to be invalid, illegal or unenforceable, the validity, legality and enforceability of the remainder of the Agreement shall not in any way be affected or impaired thereby.

3.Governing Law. This Agreement and any other document or instrument delivered pursuant hereto, and all claims or causes of action that may be based upon, arise out of or relate to this Agreement will be governed by, and construed under and in accordance with, the internal laws of the State of Delaware, without reference to rules relating to conflicts of laws.

4.Entire Agreement. This Agreement, the Employment Agreement and the other agreements referred to in the Employment Agreement constitute the entire agreement and understanding of the parties with respect to the subject matter herein and supersedes all prior agreements, arrangements and understandings, written or oral, between the parties. Executive acknowledges and agrees that he is not relying on any representations or promises by any representative of the Company concerning the meaning of any aspect of this Agreement.

5.Amendment. This release shall not be amended, supplemented or otherwise modified in any way except in a writing signed by Executive and the Company.

6.Counterparts. This Agreement may be executed in counterparts, each of which shall be deemed an original but all of which together shall constitute one and the same instrument.

IN WITNESS WHEREOF, intending to be forever legally bound hereby, the parties hereto have executed this Agreement, being seven (7) pages in total length as of the dates set forth below.