Document:

EX-10.8

 Exhibit 10.8 

SINGULAR GENOMICS SYSTEMS, INC. 

December 17, 2019 
 Andrew Spaventa 

Dear Drew: 
 SINGULAR GENOMICS SYSTEMS, INC. (the
“Company”) is pleased to confirm the amended terms of your employment with the Company, as follows: 
 1. Position. Your
title will continue to be Chief Executive Officer, President and Chairman of the Board. This is a full-time position. In this position, you will be responsible for setting strategic goals for the Company and leading with the management team toward
the successful achievement of such goals, and for overseeing all operations and business activities of the Company. You acknowledge that you are not currently involved in and during the duration of your employment with the Company, will not become
involved in any outside activities, including any consulting or other business activity (whether full-time or part-time), that would create a conflict of interest with the Company. By signing this letter
agreement, you confirm to the Company that you have no contractual commitments or other legal obligations that prohibit you from performing your duties for the Company. In addition, for the duration of your employment as Chief Executive Officer, you
will serve on the Company’s Board of Directors. 
 2. Cash Compensation. 

(a) Annual Salary. Effective as of January 1, 2020, the Company will increase your base salary to $365,750 per year, payable in
accordance with the Company’s standard payroll schedule. This salary will be subject to further adjustment pursuant to the Company’s employee compensation policies in effect from time to time. 

(b) Annual Bonus. You will be eligible to be considered for an incentive bonus for each fiscal year of the Company. The bonus (if any)
will be awarded based on objective or subjective criteria established by the Board of Directors. Your target bonus will be equal to 35% of your annual base salary. Any bonus for a fiscal year will be paid within
21⁄2 months after the close of that fiscal year, but only if you are still employed by the Company at the time of payment. The determinations of the Board of
Directors with respect to your bonus will be final and binding. 
 3. Employee Benefits. You will remain eligible to participate in a
number of Company-sponsored benefits. We currently offer a flexible vacation policy, which does not limit the amount of vacation time that employees may take, provided that job performance remains acceptable. This policy is subject to change from
time to time at the Company’s discretion. You acknowledge no vacation accrues under the flexible vacation policy, and therefore there is no unused vacation to be paid out upon termination. 

4. Stock Options. Subject to the approval of the Company’s Board of Directors, you will be granted an option to purchase 2,715,000
shares (the “Option Shares”) of the Company’s Common Stock (the “Option”). The exercise price per share shall be equal to the fair market value per share on the date the Option is granted, as determined by the
Company’s Board of Directors. The Option will be subject to the terms and conditions applicable to options granted under the Company’s 2016 Stock 

  
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Plan (the “Plan”) and the applicable Stock Option Agreement. You will vest in 1/48th of the Option Shares for each month of continuous service measured from December 17, 2019,
as described in the applicable Stock Option Agreement. If your employment ends as a result of an Involuntary Termination more than three (3) months prior to a Change in Control, you will immediately vest in the number of Option Shares in which
you would have vested had you provided twelve (12) additional months of continuous service. In addition, you will immediately vest with respect to any remaining unvested Option Shares, upon the effective date of a Change in Control if
(a) you are providing services to the Company at such effective time or (b) your services with the Company ended as a result of an Involuntary Termination on or less than three (3) months prior to the effective date of such Change in
Control. 
 5. Severance. 

(a) General. If you are subject to an Involuntary Termination, then you will be entitled to the benefits described in this
Section 5. However, this Section 5 will not apply unless you (i) have returned all Company property in your possession, (ii) have resigned as a member of the Board of Directors of the Company and all of its subsidiaries, to the
extent applicable, and (iii) have executed a general release of all claims that you may have against the Company or persons affiliated with the Company. You must execute and return the release on or before the date specified by the Company in
the prescribed form (the “Release Deadline”). The Release Deadline will in no event be later than fifty (50) days after your Separation. If you fail to return the release on or before the Release Deadline, or if you revoke the
release, then you will not be entitled to the benefits described in this Section 5. 
 (b) Salary Continuation. If you are
subject to an Involuntary Termination, then the Company will continue to pay your base salary for a period of twelve (12) months after your Separation. Your base salary will be paid at the rate in effect at the time of your Separation and in
accordance with the Company’s standard payroll procedures. The salary continuation payments will commence within sixty (60) days after your Separation and, once they commence, will include any unpaid amounts accrued from the date of your
Separation. However, if the sixty (60)-day period described in the preceding sentence spans two calendar years, then the payments will in any event begin in the second calendar year. 

(c) Prorated Bonus. If you are subject to an Involuntary Termination, then you will be entitled to a prorated portion of your target
bonus, based on the number of days you are employed by the Company during the fiscal year in which you are subject to the Involuntary Termination. The bonus will be paid to you within sixty (60) days after your Separation, however, if the sixty
(60)-day period spans two calendar years, then the payments will in any event begin in the second calendar year. 

(d) COBRA. If you are subject to an Involuntary Termination and you elect to continue your health insurance coverage under the
Consolidated Omnibus Budget Reconciliation Act (“COBRA”) following your Separation, then the Company will pay the same portion of your monthly premium under COBRA as it pays for active employees until the earliest of (i) the close of
the twelve (12)-month period following your Separation, (ii) the expiration of your continuation coverage under COBRA or (iii) the date when you become eligible for substantially equivalent health insurance coverage in connection with new
employment or self-employment. 
 6. Proprietary Information and Inventions Agreement. The Proprietary Information and Inventions
Agreement that you signed on September 6, 2016 will remain in full force and effect. 
 7. Employment Relationship. Employment
with the Company is for no specific period of time. Your employment with the Company will be “at will,” meaning that either you or the 

  
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Company may terminate your employment at any time and for any reason, with or without cause. Any contrary representations that may have been made to you are superseded by this letter agreement.
This is the full and complete agreement between you and the Company on this term. Although your job duties, title, compensation and benefits, as well as the Company’s personnel policies and procedures, may change from time to time, the “at
will” nature of your employment may only be changed in an express written agreement signed by you and a duly authorized officer of the Company (other than you). 

During the term of your employment, you shall devote your business energies, interest, abilities and productive time to the proper and
efficient performance of your duties with the Company; provided, however, that you may continue to serve as partner of Axon Ventures. You may also serve as a director on the Board of Directors of other companies and/or engage in other professional
activities that you disclose in writing in advance to, and are approved by, the Company’s Board of Directors. 
 8. Tax Matters.

 (a) Withholding. All forms of compensation referred to in this letter agreement are subject to reduction to reflect applicable
withholding and payroll taxes and other deductions required by law. 
 (b) Section 409A. For purposes of Section 409A of the
Internal Revenue Code of 1986, as amended (the “Code”), each salary continuation payment under Section 5(b) is hereby designated as a separate payment. If the Company determines that you are a “specified employee” under
Section 409A(a)(2)(B)(i) of the Code at the time of your Separation, then (i) the salary continuation payments under Section 5(b), to the extent that they are subject to Section 409A of the Code, will commence on the first
business day following (A) expiration of the six-month period measured from your Separation or (B) the date of your death and (ii) the installments that otherwise would have been paid prior to
such date will be paid in a lump sum when the salary continuation payments commence 
 (c) Tax Advice. You are encouraged to obtain
your own tax advice regarding your compensation from the Company. You agree that the Company does not have a duty to design its compensation policies in a manner that minimizes your tax liabilities, and you will not make any claim against the
Company or its Board of Directors related to tax liabilities arising from your compensation. 
 9. Interpretation, Amendment and
Enforcement. This letter agreement supersedes and replaces your prior offer letter with the Company, signed on September 6, 2016, and any additional prior agreements, representations or understandings (whether written, oral, implied or
otherwise) between you and the Company and constitutes the complete agreement between you and the Company regarding the subject matter set forth herein. This letter agreement may not be amended or modified, except by an express written agreement
signed by both you and a duly authorized officer of the Company. The terms of this letter agreement and the resolution of any disputes as to the meaning, effect, performance or validity of this letter agreement or arising out of, related to, or in
any way connected with, this letter agreement, your employment with the Company or any other relationship between you and the Company (the “Disputes”) will be governed by California law, excluding laws relating to conflicts or choice of
law. You and the Company submit to the exclusive personal jurisdiction of the federal and state courts located in San Diego, California in connection with any Dispute or any claim related to any Dispute. 

  
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 10. Definitions. The following terms shall have the meaning set forth below wherever
they are used in this letter agreement: 
 “Cause” shall mean any of the following: (a) your commission of any act
that would constitute a felony or a crime involving fraud, dishonesty, or moral turpitude under the laws of the United States or any state thereof; (b) your intentional violation of any federal or state law or regulation applicable to the
Company’s business that results in material harm to the Company or its operations; (c) your material violation of any agreement between you and the Company, any Company policy, or any statutory duty owed to the Company or its stockholders
that results in material harm to the Company or its operations; (d) an act of gross misconduct or of clear and material insubordination that results in material harm to the Company or its operations; or (e) your persistent neglect of job
duties that results in material harm to the Company or its operations. If conduct constituting “Cause” under clause (c), (d) or (e) above is reasonably susceptible of cure as determined by the Board of Directors in good faith, Cause
shall not exist unless you are first given thirty (30) days’ written notice to cure. 
 “Change in Control” means
(a) the consummation of a merger or consolidation of the Company with or into another entity, (b) a sale of all or substantially all of the assets of the Company or (c) the acquisition by a third party in a single transaction or a
series of related transactions of more than fifty percent (50%) of the Company’s outstanding capital stock. The foregoing notwithstanding, a merger or consolidation of the Company does not constitute a “Change in Control” if
immediately after the merger or consolidation a majority of the voting power of the capital stock of the continuing or surviving entity, or any direct or indirect parent corporation of the continuing or surviving entity, will be owned by the persons
who were the Company’s stockholders immediately prior to the merger or consolidation in substantially the same proportions as their ownership of the voting power of the Company’s capital stock immediately prior to the merger or
consolidation. 
 “Involuntary Termination” means either (a) your Termination Without Cause or (b) your
Resignation for Good Reason. 
 “Resignation for Good Reason” means a Separation as a result of your resignation within
twelve (12) months after one of the following conditions has come into existence without your consent: 
 (a) A reduction in your base
salary or target bonus by more than 10%, provided that a reduction of up to 10% shall also be grounds for a Resignation for Good Reason unless the same reduction applies to all of the Company’s then serving executives; 

(b) A material diminution of your titles, authority, duties or responsibilities; or 

(c) A relocation of your principal workplace by more than fifty (50) miles. 

A Resignation for Good Reason will not be deemed to have occurred unless you give the Company written notice of the condition within ninety (90) days
after the condition comes into existence and the Company fails to remedy the condition within thirty (30) days after receiving your written notice. For the avoidance of doubt, an acquisition of the Company without a corresponding change in
authority, duties or responsibilities shall not constitute grounds for a “Resignation for Good Reason” under Section (b) above. 

“Separation” means a “separation from service,” as defined in the regulations under Section 409A of the Code.

  
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 “Termination Without Cause” means a Separation as a result of a termination
of your employment by the Company without Cause, provided you are willing and able to continue performing services within the meaning of Treasury Regulation 1.409A-1(n)(1). 

*    *    *    *    * 

We look forward to continuing our successful employment relationship with you. You may indicate your agreement with these terms by signing and
dating this letter agreement and returning it to Human Resources. 
  

			
	 Very truly yours,

	
	 SINGULAR GENOMICS SYSTEMS, INC.

		
	By:	 	 /s/ Kim Kamdar 

		 	 Kim Kandar

  

			
		
	By:	 	 /s/ Michael Pellini

		 	 Michael Pellini 

 I have read and accept this employment offer: 
  

	
	 /s/ Andrew Spaventa

 Andrew Spaventa 
 Dated:
January 7, 2020 

  
 5EX-10.9

 Exhibit 10.9 

SINGULAR GENOMICS SYSTEMS, INC. 

December 17, 2019 
 Dr. Eli Glezer 

Dear Eli: 
 SINGULAR GENOMICS SYSTEMS, INC. (the
“Company”) is pleased to confirm the amended terms of your employment with the Company, as follows: 
 1. Position.
You will continue to serve as the Company’s Chief Scientific Officer. This is a full-time position. In this position, you will be responsible for leading the Company’s research and product development activities and strategies. You
acknowledge that you are not currently involved in and during the duration of your employment with the Company, will not become involved in any outside activities, including any consulting or other business activity (whether full-time or part-time),
that would create a conflict of interest with the Company. By signing this letter agreement, you confirm to the Company that you have no contractual commitments or other legal obligations that prohibit you from performing your duties for the
Company. You will report directly to the Company’s Chief Executive Officer. 
 2. Cash Compensation. 

(a) Annual Salary. Effective as of January 1, 2020, the Company will increase your base salary to $313,500 per year, payable in
accordance with the Company’s standard payroll schedule. This salary will be subject to further adjustment pursuant to the Company’s employee compensation policies in effect from time to time. 

(b) Annual Bonus. You will be eligible to be considered for an incentive bonus for each fiscal year of the Company. The bonus (if any)
will be awarded based on objective or subjective criteria established by the Board of Directors. Your target bonus will be equal to 25% of your annual base salary. Any bonus for a fiscal year will be paid within 21/2 months after the close of that
fiscal year, but only if you are still employed by the Company at the time of payment. The determinations of the Board of Directors with respect to your bonus will be final and binding. 

3. Employee Benefits. You will remain eligible to participate in a number of Company-sponsored benefits. We currently offer a flexible
vacation policy, which does not limit the amount of vacation time that employees may take, provided that job performance remains acceptable. This policy is subject to change from time to time at the Company’s discretion. You acknowledge no
vacation accrues under the flexible vacation policy, and therefore there is no unused vacation to be paid out upon termination. 
 4.
Stock Options. Subject to the approval of the Company’s Board of Directors, you will be granted an option to purchase 1,210,000 shares (the “Option Shares”) of the Company’s Common Stock (the
“Option”). The exercise price per share shall be equal to the fair market 

 
value per share on the date the Option is granted, as determined by the Company’s Board of Directors. The Option will be subject to the terms and conditions applicable to options granted
under the Company’s 2016 Stock Plan (the “Plan”) and the applicable Stock Option Agreement. You will vest in 1/48th of the Option Shares for each month of continuous service measured from December 17, 2019, as described in
the applicable Stock Option Agreement. If your employment ends a result of an Involuntary Termination more than three (3) months prior to a Change in Control, you will immediately vest in the number of Option Shares in which you would have
vested had you provided six (6) additional months of continuous service. In addition, you will immediately vest with respect to any remaining unvested Option Shares, if your services with the Company or the acquiring company ends as a result of
an Involuntary Termination (I) in connection with or within three (3) months prior to the date of a Change in Control or (II) within eighteen (18) months following the effective date of such Change in Control; provided that if
the successor-in-interest to the Company offers a service relationship to you on terms that would not constitute Resignation for Good Reason hereunder then your
employment shall be deemed to not have terminated in connection with such Change in Control. 
 5. Severance. 

(a) General. If you are subject to an Involuntary Termination, then you will be entitled to the benefits described in this
Section 5. However, this Section 5 will not apply unless you (i) have returned all Company property in your possession, (ii) have resigned as a member of the Board of Directors of the Company and all of its subsidiaries, to the
extent applicable, and (iii) have executed a general release of all claims that you may have against the Company or persons affiliated with the Company. You must execute and return the release on or before the date specified by the Company in
the prescribed form (the “Release Deadline”). The Release Deadline will in no event be later than 50 days after your Separation. If you fail to return the release on or before the Release Deadline, or if you revoke the release, then
you will not be entitled to the benefits described in this Section 5. 
 (b) Salary Continuation. If you are subject to an
Involuntary Termination, then the Company will continue to pay your base salary for a period of six (6) months after your Separation. Your base salary will be paid at the rate in effect at the time of your Separation and in accordance with the
Company’s standard payroll procedures. The salary continuation payments will commence within sixty (60) days after your Separation and, once they commence, will include any unpaid amounts accrued from the date of your Separation. However,
if the sixty (60)-day period described in the preceding sentence spans two calendar years, then the payments will in any event begin in the second calendar year. 

(c) Prorated Bonus. If you are subject to an Involuntary Termination, then you will be entitled to a prorated portion of your target
bonus, based on the number of days you are employed by the Company during the fiscal year in which you are subject to the Involuntary Termination. The bonus will be paid to you within sixty (60) days after your Separation, however, if the sixty
(60)-day period spans two calendar years, then the payments will in any event begin in the second calendar year. 

(d) COBRA. If you are subject to an Involuntary Termination and you elect to continue your health insurance coverage under the
Consolidated Omnibus Budget 
  
  

  
 2 

 
Reconciliation Act (“COBRA”) following your Separation, then the Company will pay the same portion of your monthly premium under COBRA as it pays for active employees until the
earliest of (i) the close of the six (6) month period following your Separation, (ii) the expiration of your continuation coverage under COBRA or (iii) the date when you become eligible for substantially equivalent health
insurance coverage in connection with new employment or self-employment. 
 6. Proprietary Information and Inventions Agreement. The
Proprietary Information and Inventions Agreement that you signed on September 19, 2016 will remain in full force and effect. 
 7.
Employment Relationship. Employment with the Company is for no specific period of time. Your employment with the Company will be “at will,” meaning that either you or the Company may terminate your employment at any time and
for any reason, with or without cause. Any contrary representations that may have been made to you are superseded by this letter agreement. This is the full and complete agreement between you and the Company on this term. Although your job duties,
title, compensation and benefits, as well as the Company’s personnel policies and procedures, may change from time to time, the “at will” nature of your employment may only be changed in an express written agreement signed by
you and a duly authorized officer of the Company (other than you). 
 During the term of your employment, you shall devote your business
energies, interest, abilities and productive time to the proper and efficient performance of your duties with the Company. You may serve as a director on the Board of Directors of other companies and/or engage in other professional activities that
you disclose in writing in advance to, and are approved by, the Company’s Board of Directors. 
 8. Tax Matters. 

(a) Withholding. All forms of compensation referred to in this letter agreement are subject to reduction to reflect applicable
withholding and payroll taxes and other deductions required by law. 
 (b) Section 409A. For purposes of Section 409A of the
Internal Revenue Code of 1986, as amended (the “Code”), each salary continuation payment under Section 5(b) is hereby designated as a separate payment. If the Company determines that you are a “specified
employee” under Section 409A(a)(2)(B)(i) of the Code at the time of your Separation, then (i) the salary continuation payments under Section 5(b), to the extent that they are subject to Section 409A of the Code, will
commence on the first business day following (A) expiration of the six-month period measured from your Separation or (B) the date of your death and (ii) the installments that otherwise would
have been paid prior to such date will be paid in a lump sum when the salary continuation payments commence 
 (c) Tax Advice. You
are encouraged to obtain your own tax advice regarding your compensation from the Company. You agree that the Company does not have a duty to design its compensation policies in a manner that minimizes your tax liabilities, and you will not make any
claim against the Company or its Board of Directors related to tax liabilities arising from your compensation. 
  

 

  
 3 

 9. Interpretation, Amendment and Enforcement. This letter agreement supersedes and
replaces your prior offer letter with the Company, signed on September 19, 2016 and any additional prior agreements, representations or understandings (whether written, oral, implied or otherwise) between you and the Company and constitutes the
complete agreement between you and the Company regarding the subject matter set forth herein. This letter agreement may not be amended or modified, except by an express written agreement signed by both you and a duly authorized officer of the
Company. The terms of this letter agreement and the resolution of any disputes as to the meaning, effect, performance or validity of this letter agreement or arising out of, related to, or in any way connected with, this letter agreement, your
employment with the Company or any other relationship between you and the Company (the “Disputes”) will be governed by California law, excluding laws relating to conflicts or choice of law. You and the Company submit to the
exclusive personal jurisdiction of the federal and state courts located in San Diego, California in connection with any Dispute or any claim related to any Dispute. 

10. Definitions. The following terms shall have the meaning set forth below wherever they are used in this letter agreement: 

“Cause” shall mean any of the following: (i) your commission of any act that would constitute a felony or a crime
involving fraud, dishonesty, or moral turpitude under the laws of the United States or any state thereof; (ii) your intentional violation of any federal or state law or regulation applicable to the Company’s business that results in
material harm to the Company or its operations; (iii) your material violation of any agreement between you and the Company, any Company policy, or any statutory duty owed to the Company or its stockholders that results in material harm to the
Company or its operations; (iv) an act of gross misconduct or of clear and material insubordination that results in material harm to the Company or its operations; or (v) your persistent neglect of job duties that results in material harm
to the Company or its operations. If conduct constituting “Cause” under clause (iii), (iv) or (v) above is reasonably susceptible of cure as determined by the Board of Directors in good faith, Cause shall not exist unless you
are first given thirty (30) days’ written notice to cure. 
 “Change in Control” means (a) the consummation
of a merger or consolidation of the Company with or into another entity, (b) a sale of all or substantially all of the assets of the Company or (c) the acquisition by a third party in a single transaction or a series of related
transactions of more than 50% of the Company’s outstanding capital stock. The foregoing notwithstanding, a merger or consolidation of the Company does not constitute a “Change in Control” if immediately after the merger or
consolidation a majority of the voting power of the capital stock of the continuing or surviving entity, or any direct or indirect parent corporation of the continuing or surviving entity, will be owned by the persons who were the Company’s
stockholders immediately prior to the merger or consolidation in substantially the same proportions as their ownership of the voting power of the Company’s capital stock immediately prior to the merger or consolidation. 

“Involuntary Termination” means either (a) your Termination Without Cause or (b) your Resignation for Good Reason.

  
  

  
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 “Resignation for Good Reason” means a Separation as a result of your
resignation within twelve (12) months after one of the following conditions has come into existence without your consent: 
 (a) A
reduction in your base salary or target bonus by more than 10%, but only if the same reduction applies to all of the Company’s then serving executives; 

(b) A material diminution of your titles, authority, duties or responsibilities; or 

(c) A relocation of your principal workplace by more than fifty (50) miles. 

A Resignation for Good Reason will not be deemed to have occurred unless you give the Company written notice of the condition within ninety
(90) days after the condition comes into existence and the Company fails to remedy the condition within thirty (30) days after receiving your written notice. For the avoidance of doubt, an acquisition of the Company without a corresponding
change in authority, duties or responsibilities shall not constitute grounds for a “Resignation for Good Reason.” 

“Separation” means a “separation from service,” as defined in the regulations under Section 409A of the
Code. 
 “Termination Without Cause” means a Separation as a result of a termination of your employment by the Company
without Cause, provided you are willing and able to continue performing services within the meaning of Treasury Regulation 1.409A-1(n)(1). 

*    *    *    *    * 

We look forward to continuing our successful employment relationship with you. You may indicate your agreement with these terms by signing and
dating this letter agreement and returning it to Human Resources. 
  
  

  
 5 

 
			
	 Very truly yours,

	
	 SINGULAR GENOMICS SYSTEMS, INC.

		
	By:	 	 /s/ Andrew Spaventa

		 	 Andrew Spaventa

		 	 Chief Executive Officer

 I have read and accept this employment offer: 
  

	
	 /s/ Eli Glezer

 Eli Glezer 
 Dated:
1/11/2020

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