EX-10.9

On behalf of NewAmsterdam Pharma Corporation, I am pleased to offer you (“you” or “Executive”) employment with the Company as its Chief Financial Officer. NewAmsterdam Pharma Corporation (the “U.S. Subsidiary”) is an indirect wholly owned subsidiary of NewAmsterdam Pharma Company N.V. (“Parent”). The

U.S. Subsidiary, Parent, and their respective subsidiaries and other affiliates are collectively referred to herein as the “Company,” and the duties of the Company set forth herein may be discharged by any entity within that definition. The initial terms and conditions of your employment, should you accept this offer, are set forth below in this letter agreement (the “Agreement”). Certain capitalized terms used in this Agreement are defined in the attached Exhibit A.

Position. As Chief Financial Officer, you will report to the Chief Executive Officer. This is a full- time employment position. It is understood and agreed that, while you render services to the Company, you will not engage in any other employment, consulting or other business activities (whether full-time or part-time) that, as reasonably determined by the Chief Executive Officer, will detract from, or interfere with, the fulfillment of your responsibilities or duties under this Agreement, except as expressly authorized in writing by the Chief Executive Officer. Notwithstanding the foregoing, you may engage in religious, charitable and other community activities, and manage your personal investments and affairs, so long as such activities do not interfere or conflict with your obligations to the Company.

Bonus. You will be eligible to receive an annual performance bonus targeted at 45% of your Base Salary. Any bonus awarded for the calendar year in which your employment commences will be prorated based on the Effective Date. The actual bonus amount, whether a bonus is paid, and the amount of any bonus, are discretionary except to the extent otherwise set forth in a bonus policy or procedure then in effect or as otherwise established by the Company for its U.S.-based executives. Unless otherwise explicitly provided in this Agreement or an applicable bonus policy or agreement, to earn an annual bonus, you must be employed by the Company as of the payment date of such bonus. Any annual bonus will be paid in cash no later than March 15th of the calendar year following the calendar year to which such bonus relates.

that you submit appropriate supporting documentation within fifteen (15) days following the Effective Date (the “Attorney Fees”). The Attorney Fees will paid directly to your counsel no later than thirty (30) days after submission of appropriate supporting documentation.

Benefits/Paid Time Off. You will be eligible, subject to the terms of the applicable plans and programs, to participate in the employee benefits and insurance programs generally made available to the Company’s full-time U.S.-based executives. Details of such benefits programs will be made available to you before you commence employment. You will be entitled to paid time off consistent with the terms of the Company’s paid time off policy for U.S.-based executives, as in effect from time to time. The Company reserves the right to modify, amend or cancel any of its benefits plans or programs at any time.

Equity Incentives. Subject to approval by Parent’s Board of Directors (or the applicable committee thereof), you will receive a grant of 824,697 stock options to purchase Parent ordinary shares under Parent’s long-term incentive plan. Except as may be provided in the governing documents, vesting in this equity grant will be subject to your continued service as follows: 25% of the stock options subject to the equity grant, rounded up to the nearest whole number, shall vest on the first anniversary of the Effective Date and, thereafter, 1/36 of the remaining stock options subject to the equity grant shall vest each month for the next 36 months (in equal instalments, rounded up to the nearest whole number for the first 35 months, and the remaining for the 36th month). Any such option will be governed by the terms and conditions of the applicable award agreement(s) and long-term incentive plan rules.

Your last day of employment for any reason is referred to herein as the “Date of Termination.” In the event that you elect to end your employment other than for Good Reason, the Company requires that you provide at least 14 days’ advance written notice to the Company. The Company may unilaterally accelerate the Date of Termination, and such acceleration shall not be deemed a termination by the Company.

To the extent applicable, you shall be deemed to have resigned from all officer, board and committee positions that you hold with the Company or any of its respective subsidiaries and affiliates upon the termination of your employment for any reason. You shall execute any documents in reasonable form as may be requested to confirm or effectuate any such resignations.

Accrued Obligations. In the event of the ending of your employment for any reason, the Company shall pay you (i) your Base Salary through the Date of Termination, (ii) to the extent provided in the applicable Company vacation policy, accrued but unused vacation days through the Date of Termination, (iii) any vested benefits due under the Company’s employee benefit plans upon a termination of employment, (iv) the amount of any documented expenses properly incurred by you on behalf of the Company prior to any such termination and not yet reimbursed, and (v) any other consideration due to you under the applicable terms of any agreement with the Company that survive your termination of employment (together, the “Accrued Obligations”).

(i) you signing a Separation Agreement (as defined below, which shall include, without limitation, a general release of claims against the Company and all related persons and entities and a reaffirmation of the Continuing Obligations as defined below) that is provided by the Company no later than 30 days after your Date of Termination; (ii) an agreement to extend your Non-Competition Period, as defined in your Restrictive Covenants Agreement (defined below), through the twelve (12) month anniversary of your Date of Termination, which may, for convenience, be included in your Separation Agreement; (iii) your not being in material (and, if curable, uncured) breach of the Continuing Obligations (which breach shall cause all severance payments and benefits to immediately cease); and (iii) the Separation Agreement becoming irrevocable (following a seven-business-day revocation period), all within 60 days after the Date of Termination:

The Company shall pay (i) Executive any bonus otherwise earned or payable (but for the cessation of Executive’s employment) with respect to a bonus year ended prior to the cessation of Executive’s employment and (ii) a prorated bonus for the calendar year of your Date of Termination, calculated as the bonus Executive would have received in such year based on actual performance (and treating Executive’s performance to be at target) multiplied by a fraction, the numerator of which is the number of days during the calendar year of the Date of Termination that Executive was employed and the denominator of which is the total number of days during the calendar year of the Date of Termination, each paid at the time such bonuses are paid to other participants, or if earlier, by March 15 of the year following the year of your Date of Termination;

Subject to your payment of premium amounts at the applicable active employees’ rate and your proper election to receive benefits under the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”), the Company shall pay to the group health plan provider(s) or the COBRA provider a monthly payment equal to the monthly employer contribution that the Company would have made to provide health (including dental, if applicable) insurance to you if you had remained employed by the Company until the earliest of (A) the twelve (12) month anniversary of the Date of Termination; (B) your eligibility for group health plan benefits under any other employer’s group health plan; or (C) the cessation of your continuation rights under COBRA; provided, however, that if the Company reasonably determines that it cannot pay such amounts to the group health plan provider(s) or the COBRA provider (if applicable) without violating applicable law (including, without limitation, Section 2716 of the Public Health Service Act), then the Company shall convert such payments to payroll payments directly to you for the time period specified above. Such payments, if to you, shall be subject to tax-related deductions and withholdings and paid on the Company’s regular payroll dates.

Except with respect to bonus payments described in Section 8(b), amounts payable under this Section 8, to the extent taxable, shall be paid out in substantially equal installments in accordance with the Company’s payroll practice over twelve (12) months commencing within 60 days after the Date of Termination; provided, however, that if the 60-day period begins in one calendar year and ends in a second calendar year, such amounts, to the extent they qualify as “non-qualified deferred compensation” within the meaning of Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), shall begin to be paid in the second calendar year by the last day of such 60-day period; provided, further, that the initial payment shall include a catch-up payment to cover amounts retroactive to the day immediately following the Date of Termination.

If your employment ends for any reason other than a termination by the Company without Cause or a termination by you for Good Reason, you will be entitled to the Accrued Obligations and will not be entitled to any further compensation from the Company; provided, however, if your employment ends due to your death or disability, you will receive the Accrued Obligations and the bonus payments described in Sections 8(b), but you will not be eligible for other severance pay and benefits, whether pursuant to this Section 8 or otherwise.

For purposes of this Agreement, the “Separation Agreement” shall a be a form of separation and release

that: (i) includes a general release of all claims which could be brought against the Company and all related persons and entities (other than with respect to the Accrued Obligations) and a reaffirmation of the Continuing Obligations (as defined below); and (ii) except as expressly otherwise provided in Section 8, does not include any post-employment restrictions that are more restrictive to you than those provided in the Continuing Obligations.

Qualifying Change in Control Termination. In the event of a Qualifying Change in Control Termination, then, subject to the Separation Agreement requirement described in Section 8 above, Executive will receive the severance payments and benefits described in Section 8 above and, notwithstanding anything to the contrary in any applicable option agreement or stock-based award agreement or equity plan, (A) all time-based stock options and other time-based equity awards of Executive shall accelerate and become fully exercisable or nonforfeitable as of the Date of Termination, and (B) the exercise period with respect to the Executive’s vested stock options shall extend until the earlier of (i) the original final expiration date for such vested stock options as provided in the applicable equity documents, or (ii) the 24-month anniversary of the Date of Termination (or, if later, the date specified in the applicable equity documents) (the “Extended Exercise Period”). The Executive is advised to consult the Executive’s tax advisor with respect to the tax implications of the Extended Exercise Period.

Restrictive Covenants Agreement. As a condition of your employment, you are required to enter into the Confidentiality and Assignment of Inventions Agreement enclosed with this Agreement (the “Restrictive Covenants Agreement”), with respect to which you have the right to consult counsel prior to signing. For purposes of this Agreement, the obligations in this Section 10 and those that arise in the Restrictive Covenants Agreement and any other agreement relating to confidentiality, assignment of inventions, or other restrictive covenants shall collectively be referred to as the “Continuing Obligations.” By signing this Agreement, you hereby confirm that the Restrictive Covenant Agreement was provided to you with the first version of this Agreement and at least ten business days prior to the Effective Date and that the payments and benefits hereunder, including your severance rights and equity grant eligibility, are mutually agreed consideration for your obligations under the Restrictive Covenants Agreement. If you materially breach any of the Continuing Obligations, the Company will not be obligated to commence or continue to pay the Severance Amount or the bonuses described in Section 8, to provide the COBRA benefit, or to provide the vesting acceleration or Extended Exercise Period in Section 9. However, if such breach is curable, the Company will provide you written notice detailing such breach and if you cure such period within 30 days after your receipt of such notice, your rights to such payments and benefits will be restored.

Third Party Agreements and Rights. You hereby confirm that you are not bound by the terms of any agreement with any previous employer or other party that restricts in any way your engagement in any business (including with respect to solicitation or hiring of the previous employer’s or other party’s employees). You represent to the Company that your execution of this Agreement, your employment with the Company and the performance of your proposed duties for the Company will not violate any obligations you may have to any previous employer or other party. In your work for the Company, you will not disclose or make use of any information in violation of any agreements with or rights of any previous employer or other party, and you will not bring to the premises of the Company any copies or other tangible embodiments of non-public information belonging to or obtained from any previous employment or other party.

Litigation and Regulatory Cooperation. During and after your employment, you shall cooperate fully with the Company with respect to (i) the defense or prosecution of any claims or actions now in existence or which may be brought in the future against or on behalf of the Company which relate to events or occurrences that transpired while you were employed by the Company, and (ii) the investigation, whether internal or external, of any matters about which the Company believes you may have knowledge or information. Your full cooperation in connection with such claims, actions or investigations shall include, but not be limited to, being available to meet with counsel to answer questions or to prepare for discovery or trial and to act as a witness on behalf of the Company at mutually convenient times. During and after your employment, you also shall cooperate fully

with the Company in connection with any investigation or review of any federal, state or local regulatory authority as any such investigation or review relates to events or occurrences that transpired while you were employed by the Company. The Company shall reimburse you for any reasonable out-of-pocket expenses incurred in connection with your performance of obligations pursuant to this Section 10(c). You will not be required to expend unreasonable amounts of time or effort in the course of such cooperation, taking into consideration your then other professional and personal obligations.

Relief. You agree that it would be difficult to measure any damages caused to the Company which might result from your breach of any of the Continuing Obligations, and that in any event money damages would be an inadequate remedy for any such breach. Accordingly, you agree that if you breach, or propose to breach, any portion of the Continuing Obligations, the Company shall be entitled, in addition to all other remedies that it may have, to an injunction or other appropriate equitable relief to restrain any such breach without showing or proving any actual damage to the Company.

11.

Indemnification. The Company agrees that if you are made a party, or are threatened to be made a party, to any action, suit or proceeding, whether civil, criminal, administrative or investigative (each, a “Proceeding”), by reason of the fact that you are or were a director, officer or employee of the Company or are or were serving at the request of the Company as a director, officer, member, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans, whether or not the basis of such Proceeding is your alleged action in an official capacity while serving as a director, officer, member, employee or agent, you shall be indemnified and held harmless by the Company to the fullest extent permitted or authorized by applicable law, against all cost, expense, liability and loss reasonably incurred or suffered by you in connection therewith, and such indemnification shall continue as to you even if you have ceased to be a director, member, employee or agent of the Company or other entity and shall inure to the benefit of your heirs, executors and administrators. In connection with such indemnification, the Company shall advance to you all reasonable and documented out of pocket costs and expenses incurred by you in connection with the foregoing; provided that if it is determined that you were not eligible for indemnification, you shall repay any such advanced amounts. The Company agrees to maintain a directors’ and officers’ liability insurance policy covering you to the extent the Company provides such coverage for its other directors or executive officers. Nothing herein shall limit any right that you may have in respect of indemnification, advancement or liability insurance coverage under any other Company policy, plan, contract or arrangement or under applicable law.

Anything in this Agreement to the contrary notwithstanding, if at the time of your separation from service within the meaning of Section 409A of the Code, the Company determines that you are a “specified employee” within the meaning of Section 409A(a)(2)(B)(i) of the Code, then to the extent any payment or benefit that you become entitled to under this Agreement or otherwise on account of your separation from service would be considered deferred compensation otherwise subject to the twenty percent additional tax imposed pursuant to Section 409A(a) of the Code as a result of the application of Section 409A(a)(2)(B)(i) of the Code, such payment shall not be payable and such benefit shall not be provided until the date that is the earlier of (A) six months and one day after your separation from service, or (B) your death. If any such delayed cash payment is otherwise payable on an installment basis, the first payment shall include a catch-up payment covering amounts that would otherwise have been paid during the six-month period but for the application of this provision, and the balance of the installments shall be payable in accordance with their original schedule.

amount of in-kind benefits provided or reimbursable expenses incurred in one taxable year shall not affect the in- kind benefits to be provided or the expenses eligible for reimbursement in any other taxable year (except for any lifetime or other aggregate limitation applicable to medical expenses). Such right to reimbursement or in-kind benefits is not subject to liquidation or exchange for another benefit.

The parties intend that any amounts payable under this Agreement shall be exempt from and avoid the imputation of any tax, penalty or interest under Section 409A of the Code and the regulations and other guidance thereunder to the fullest extent permissible under applicable law; provided that if any such amount is or becomes subject to the requirements of Section 409A of the Code, it is intended that those amounts shall comply with such requirements. Each payment pursuant to this Agreement is intended to constitute a separate payment for purposes of Treasury Regulation Section 1.409A-2(b)(2). The parties agree that this Agreement may be amended, as reasonably requested by either party, and as may be necessary to fully comply with Section 409A of the Code and all related rules and regulations in order to preserve the payments and benefits provided hereunder without additional cost to either party.

13.

Section 280G. Anything in this Agreement to the contrary notwithstanding, in the event that the amount of any compensation, payment or distribution by the Company to or for the benefit of the Executive, whether paid or payable or distributed or distributable pursuant to the terms of this Agreement or otherwise, calculated in a manner consistent with Section 280G of the Internal Revenue Code of 1986, as amended (the “Code”) and the applicable regulations thereunder (the “Aggregate Payments”), would be subject to the excise tax imposed by Section 4999 of the Code, then the Aggregate Payments shall be reduced (but not below zero) so that the sum of all of the Aggregate Payments shall be $1.00 less than the amount at which the Executive becomes subject to the excise tax imposed by Section 4999 of the Code; provided that such reduction shall only occur if it would result in the Executive receiving a higher After Tax Amount (as defined below) than the Executive would receive if the Aggregate Payments were not subject to such reduction. In such event, the Aggregate Payments shall be reduced in the following order, in each case, in reverse chronological order beginning with the Aggregate Payments that are to be paid the furthest in time from consummation of the transaction that is subject to Section 280G of the Code: (1) cash payments not subject to Section 409A of the Code; (2) cash payments subject to Section 409A of the Code; (3) equity- based payments and acceleration; and (4) non-cash forms of benefits; provided that in the case of all the foregoing Aggregate Payments all amounts or payments that are not subject to calculation under Treas. Reg. §1.280G-1, Q&A-24(b) or (c) shall be reduced before any amounts that are subject to calculation under Treas. Reg. §1.280G-1, Q&A- 24(b) or (c). For purposes of this Section 13, the “After Tax Amount” means the amount of the Aggregate Payments less all federal, state, and local income, excise and employment taxes imposed on the Executive as a result of the Executive’s receipt of the Aggregate Payments. For purposes of determining the After Tax Amount, the Executive shall be deemed to pay federal income taxes at the highest marginal rate of federal income taxation applicable to individuals for the calendar year in which the determination is to be made, and state and local income taxes at the highest marginal rates of individual taxation in each applicable state and locality, net of the maximum reduction in federal income taxes which could be obtained from deduction of such state and local taxes. The determinations under this Section 13 shall be made by a nationally recognized accounting firm selected by the Company (the “Accounting Firm”), which shall provide detailed supporting calculations both to the Company and the Executive within 15 business days of the Date of

Termination, if applicable, or at such earlier time as is reasonably requested by the Company or the Executive. The Executive shall cooperate with the Company and the Accounting Firm with respect to such determinations and calculations. Any determination by the Accounting Firm shall be binding upon the Company and the Executive.

17.

Assignment; Successors and Assigns. Neither you nor the Company may make any assignment of this Agreement or any interest in it, by operation of law or otherwise, without the prior written consent of the other; provided, however, that the Company will require any successor (whether direct or indirect, by purchase, merger, consolidation, transfer or otherwise) to all or substantially all of the business, assets or property of the Company, to expressly assume and agree to perform the obligations of the Company under this Agreement in the same manner and to the same extent that the Company is required to perform hereunder. This Agreement shall inure to the benefit of and be binding upon you and the Company, and each of your and its respective successors, executors, administrators, heirs and permitted assigns.

18.

Waiver; Amendment. No waiver of any provision hereof shall be effective unless made in a writing that expressly incorporates the provision being waived and is signed by the waiving party. The failure of any party to require the performance of any term or obligation of this Agreement, or the waiver by any party of any breach of this Agreement, shall not prevent any subsequent enforcement of such term or obligation or be deemed a waiver of any subsequent breach. This Agreement may be amended or modified only by a written instrument signed by you and by a duly authorized representative of the Company that expressly incorporates the provision being amended or modified.

19.

Enforceability. If any portion or provision of this Agreement (including, without limitation, any portion or provision of any section of this Agreement) shall to any extent be declared illegal or unenforceable by a court of competent jurisdiction, then the remainder of this Agreement, or the application of such portion or provision in circumstances other than those as to which it is so declared illegal or unenforceable, shall not be affected thereby, and each portion and provision of this Agreement shall be valid and enforceable to the fullest extent permitted by law.

20.

Other Terms. The provisions of this Agreement shall survive the termination of this Agreement and/or the termination of your employment to the extent necessary to effectuate the terms contained herein. The headings and other captions in this Agreement are for convenience and reference only and shall not be used in interpreting, construing or enforcing any of the provisions of this Agreement. This Agreement may be executed in separate counterparts. When both counterparts are signed, they shall be treated together as one and the same document. PDF copies of signed counterparts shall be equally effective as originals.

We are excited about the prospect of having you join the Company. Very truly yours,

“Cause” shall mean a reasonable and good faith determination by the Board of Directors of the Company that any of the following events have occurred: (i) your dishonest statements or acts, which are not corrected within 30 days after written demand for cure from the Company, with respect to the Company or any affiliate of the Company, or any current or prospective customers, suppliers vendors or other third parties with which such entity does business that results in or is reasonably anticipated to result in material harm to the Company; (ii) your conviction of (A) a felony or (B) any misdemeanor involving moral turpitude, deceit, dishonesty or fraud; (iii) your intentional or willful failure to perform your assigned duties and responsibilities (other than as a result of physical or mental illness, accident or injury), which failure is not corrected within 30 days after written demand for cure from the Company; (iv) your gross negligence, willful misconduct or insubordination that results in or is reasonably anticipated to result in material harm to the Company; or (v) your material violation of any material provision of any agreement(s) between you and the Company or any Company policies including, without limitation, agreements relating to noncompetition, non-solicitation, nondisclosure and/or assignment of inventions or policies related to ethics or workplace conduct, which violation is not corrected within 30 days after written demand for cure from the Company. If you cure the Cause condition under clause (i), (iii) or (v) during the applicable cure period, Cause shall not be deemed to have occurred.

“Good Reason” shall mean that you have complied with the “Good Reason Process” (hereinafter defined) following the occurrence of any of the following events without your prior written consent: (i) any material adverse change in your title or any material diminution in your authority or responsibilities taken as a whole; (ii) any material reduction of your Base Salary or annual bonus target, other than pursuant to an across-the-board reduction in the compensation of all senior management of the Company, provided that such reduction is proportionately equal among all such members of senior management; or (iii) any material breach by the Company of its obligations under this Agreement or any other material agreement with you. For the avoidance of doubt, this Agreement would not be breached in the event of an across-the-board reduction in the compensation of all senior management of the Company, provided that such reduction is proportionately equal among all such members of senior management.

“Good Reason Process” shall mean that (i) you reasonably determine in good faith that a “Good Reason” condition has occurred; (ii) you notify the Company in writing of the first occurrence of the Good Reason condition within 60 days of becoming aware of the first occurrence of such condition; (iii) you cooperate in good faith with the Company’s efforts, for a period not less than 30 days following such notice (the “Good Reason Cure Period”), to remedy the condition; (iv) notwithstanding such efforts, the Good Reason condition continues to exist; and (v) you terminate your employment within 60 days after the end of the Good Reason Cure Period. If the Company cures the Good Reason condition during the Good Reason Cure Period, Good Reason shall be deemed not to have occurred.

“Qualifying Change in Control Termination” shall mean, following successful completion of the Initial Period in good standing, either (i) Executive’s employment is terminated by the Company without Cause, at the request of a party (other than the Company) involved in a Change in Control, within three (3) months prior to the Change in Control (or, if longer, during the period from the date of the signing of the applicable transaction agreement(s) through the Change in Control), or (ii) Executive’s employment by the Company ceases due to a termination by the Company without Cause or a resignation by Executive for Good Reason during the twelve

(12) month period following a Change in Control. In the event of a Qualifying Change in Control Termination

under clause (i), the changes to Executive’s equity awards shall be effective as of the Change in Control, subject to the other terms and conditions herein.