Document:

EX-10.4

 Exhibit 10.4 

TALIS BIOMEDICAL CORPORATION 

2021 EMPLOYEE STOCK PURCHASE PLAN 

ADOPTED BY THE BOARD OF DIRECTORS: [__________],
2021 
 APPROVED BY THE STOCKHOLDERS: [__________], 2021 

IPO DATE: [__________], 2021 

1. GENERAL; PURPOSE. 

(a) The Plan provides a means by which Eligible Employees of the Company and certain designated Related Corporations may be given an
opportunity to purchase shares of Common Stock. The Plan permits the Company to grant a series of Purchase Rights to Eligible Employees under an Employee Stock Purchase Plan. In addition, the Plan permits the Company to grant a series of Purchase
Rights to Eligible Employees that do not meet the requirements of an Employee Stock Purchase Plan. 
 (b) The Plan includes two
components: a 423 Component and a Non-423 Component. The Company intends (but makes no undertaking or representation to maintain) the 423 Component to qualify as an Employee Stock Purchase Plan. The provisions
of the 423 Component, accordingly, will be construed in a manner that is consistent with the requirements of Section 423 of the Code. Except as otherwise provided in the Plan or determined by the Board, the
Non-423 Component will operate and be administered in the same manner as the 423 Component. 
 (c)
The Company, by means of the Plan, seeks to retain the services of such Employees, to secure and retain the services of new Employees and to provide incentives for such persons to exert maximum efforts for the success of the Company and its
Related Corporations. 
 2. ADMINISTRATION. 

(a) The Board or the Committee will administer the Plan. References herein to the Board shall be deemed to refer to the Committee except
where context dictates otherwise. 
 (b) The Board will have the power, subject to, and within the limitations of, the express
provisions of the Plan: 
 (i) To determine how and when Purchase Rights will be granted and the provisions of each Offering (which
need not be identical). 
 (ii) To designate from time to time (A) which Related Corporations of the Company will be eligible to
participate in the Plan, (B) whether such Related Corporations will participate in the 423 Component or the Non-423 Component, and (C) to the extent that the Company makes separate Offerings under
the 423 Component, in which Offering the Related Corporations in the 423 Component will participate. 
 (iii) To construe and
interpret the Plan and Purchase Rights, and to establish, amend and revoke rules and regulations for its administration. The Board, in the exercise of this power, may correct any defect, omission or inconsistency in the Plan, in a manner and to the
extent it deems necessary or expedient to make the Plan fully effective. 

  
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 (iv) To settle all controversies regarding the Plan and Purchase Rights granted under
the Plan. 
 (v) To suspend or terminate the Plan at any time as provided in Section 12. 

(vi) To amend the Plan at any time as provided in Section 12. 

(vii) Generally, to exercise such powers and to perform such acts as it deems necessary or expedient to promote the best interests of
the Company and its Related Corporations and to carry out the intent that the Plan be treated as an Employee Stock Purchase Plan with respect to the 423 Component. 

(viii) To adopt such rules, procedures and sub-plans as are necessary or appropriate to permit
or facilitate participation in the Plan by Employees who are foreign nationals or employed or located outside the United States. Without limiting the generality of, and consistent with, the foregoing, the Board specifically is authorized to adopt
rules, procedures, and sub-plans regarding, without limitation, eligibility to participate in the Plan, the definition of eligible “earnings,” handling and making of Contributions, establishment of
bank or trust accounts to hold Contributions, payment of interest, conversion of local currency, obligations to pay payroll tax, determination of beneficiary designation requirements, withholding procedures and handling of share issuances, any of
which may vary according to applicable requirements, and which, if applicable to a Related Corporation designated for participation in the Non-423 Component, do not have to comply with the requirements of
Section 423 of the Code. 
 (c) The Board may delegate some or all of the administration of the Plan to a Committee or
Committees. If administration is delegated to a Committee, the Committee will have, in connection with the administration of the Plan, the powers theretofore possessed by the Board that have been delegated to the Committee, including the power to
delegate to a subcommittee any of the administrative powers the Committee is authorized to exercise (and references in this Plan and any Offering Document to the Board will thereafter be to the Committee or subcommittee), subject, however, to such
resolutions, not inconsistent with the provisions of the Plan, as may be adopted from time to time by the Board. The Board may retain the authority to concurrently administer the Plan with the Committee and may, at any time, revest in the Board some
or all of the powers previously delegated. Whether or not the Board has delegated administration of the Plan to a Committee, the Board will have the final power to determine all questions of policy and expediency that may arise in the administration
of the Plan. 
 (d) All determinations, interpretations and constructions made by the Board in good faith will not be subject to
review by any person and will be final, binding and conclusive on all persons. 
 3. SHARES OF COMMON
STOCK SUBJECT TO THE PLAN. 
 (a) Subject to the
provisions of Section 11(a) relating to Capitalization Adjustments, the maximum number of shares of Common Stock that may be issued under the Plan will not exceed 550,000 shares of Common Stock, plus the number of shares of Common Stock that
are automatically added on January 1st of each year for a period of up to ten years, commencing on the first January 1 following the year in which the IPO Date occurs and ending on (and
including) January 1, 2031, in an amount equal to the lesser of (i) 1% of the total number of shares of Common Stock outstanding on December 31st of the preceding calendar year, and (ii)
1,550,000 shares of Common Stock. Notwithstanding the foregoing, the Board may act prior to the first day of any calendar year to provide that there will be no January 1st increase in the share
reserve for such calendar year or that the increase in the share reserve for such calendar year will be a lesser number of shares of Common Stock than would otherwise occur pursuant to the preceding sentence. For the avoidance of doubt, up to the
maximum number of shares of Common Stock reserved under this Section 3(a) may be used to satisfy purchases of Common Stock under the 423 Component and any remaining portion of such maximum number of shares may be used to satisfy purchases of
Common Stock under the Non-423 Component. 

  
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 (b) If any Purchase Right granted under the Plan terminates without having been
exercised in full, the shares of Common Stock not purchased under such Purchase Right will again become available for issuance under the Plan. 

(c) The stock purchasable under the Plan will be shares of authorized but unissued or reacquired Common Stock, including shares
repurchased by the Company on the open market. 
 4. GRANT OF PURCHASE RIGHTS;
OFFERING. 
 (a) The Board may from time to time grant or provide for the grant of Purchase Rights to Eligible
Employees under an Offering (consisting of one or more Purchase Periods) on an Offering Date or Offering Dates selected by the Board. Each Offering will be in such form and will contain such terms and conditions as the Board will deem appropriate,
and, with respect to the 423 Component, will comply with the requirement of Section 423(b)(5) of the Code that all Employees granted Purchase Rights will have the same rights and privileges. The terms and conditions of an Offering shall be
incorporated by reference into the Plan and treated as part of the Plan. The provisions of separate Offerings need not be identical, but each Offering will include (through incorporation of the provisions of this Plan by reference in the document
comprising the Offering or otherwise) the period during which the Offering will be effective, which period will not exceed 27 months beginning with the Offering Date, and the substance of the provisions contained in Sections 5 through 8, inclusive.

 (b) If a Participant has more than one Purchase Right outstanding under the Plan, unless he or she otherwise indicates in forms
delivered to the Company: (i) each form will apply to all of his or her Purchase Rights under the Plan, and (ii) a Purchase Right with a lower exercise price (or an earlier-granted Purchase Right, if different Purchase Rights have
identical exercise prices) will be exercised to the fullest possible extent before a Purchase Right with a higher exercise price (or a later-granted Purchase Right if different Purchase Rights have identical exercise prices) will be exercised. 

(c) The Board will have the discretion to structure an Offering so that if the Fair Market Value of a share of Common Stock on the first
Trading Day of a new Purchase Period within that Offering is less than or equal to the Fair Market Value of a share of Common Stock on the Offering Date for that Offering, then (i) that Offering will terminate immediately as of that first
Trading Day, and (ii) the Participants in such terminated Offering will be automatically enrolled in a new Offering beginning on the first Trading Day of such new Purchase Period. 

5. ELIGIBILITY. 
 (a)
Purchase Rights may be granted only to Employees of the Company or, as the Board may designate in accordance with Section 2(b), to Employees of a Related Corporation. Except as provided in Section 5(b) or as required by Applicable Law,
an Employee will not be eligible to be granted Purchase Rights unless, on the Offering Date, the Employee has been in the employ of the Company or the Related Corporation, as the case may be, for such continuous period preceding such Offering Date
as the Board may require, but in no event will the required period of continuous employment be equal to or greater than two years. In addition, the Board may (unless prohibited by law) provide that no Employee will be eligible to be granted Purchase
Rights under the Plan unless, on the Offering Date, such Employee’s customary employment with the Company or the Related Corporation is more than 20 hours per week and more than five months per calendar year or such other criteria as the Board
may determine consistent with Section 423 of the Code with respect to the 423 Component. The Board may also exclude from participation in the Plan or any Offering Employees who are “highly compensated employees” (within the meaning of
Section 423(b)(4)(D) of the Code) of the Company or a Related Corporation or a subset of such highly compensated employees. 

  
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 (b) The Board may provide that each person who, during the course of an Offering,
first becomes an Eligible Employee will, on a date or dates specified in the Offering which coincides with the day on which such person becomes an Eligible Employee or which occurs thereafter, receive a Purchase Right under that Offering, which
Purchase Right will thereafter be deemed to be a part of that Offering. Such Purchase Right will have the same characteristics as any Purchase Rights originally granted under that Offering, as described herein, except that: 

(i) the date on which such Purchase Right is granted will be the “Offering Date” of such Purchase Right for all purposes,
including determination of the exercise price of such Purchase Right; 
 (ii) the period of the Offering with respect to such Purchase
Right will begin on its Offering Date and end coincident with the end of such Offering; and 
 (iii) the Board may provide that if
such person first becomes an Eligible Employee within a specified period of time before the end of the Offering, he or she will not receive any Purchase Right under that Offering. 

(c) No Employee will be eligible for the grant of any Purchase Rights if, immediately after any such Purchase Rights are granted, such
Employee owns stock possessing five percent or more of the total combined voting power or value of all classes of stock of the Company or of any Related Corporation. For purposes of this Section 5(c), the rules of Section 424(d) of the
Code will apply in determining the stock ownership of any Employee, and stock which such Employee may purchase under all outstanding Purchase Rights and options will be treated as stock owned by such Employee. 

(d) As specified by Section 423(b)(8) of the Code, an Eligible Employee may be granted Purchase Rights only if such Purchase
Rights, together with any other rights granted under all Employee Stock Purchase Plans of the Company and any Related Corporations, do not permit such Eligible Employee’s rights to purchase stock of the Company or any Related Corporation to
accrue at a rate which, when aggregated, exceeds US $25,000 of Fair Market Value of such stock (determined at the time such rights are granted, and which, with respect to the Plan, will be determined as of their respective Offering Dates) for each
calendar year in which such rights are outstanding at any time. 
 (e) Officers of the Company and any designated Related Corporation,
if they are otherwise Eligible Employees, will be eligible to participate in Offerings under the Plan. Notwithstanding the foregoing, the Board may (unless prohibited by law) provide in an Offering that Employees who are highly compensated Employees
within the meaning of Section 423(b)(4)(D) of the Code will not be eligible to participate. 
 (f) Notwithstanding anything in
this Section 5 to the contrary, in the case of an Offering under the Non-423 Component, an Eligible Employee (or group of Eligible Employees) may be excluded from participation in the Plan or an Offering
if the Board has determined, in its sole discretion, that participation of such Eligible Employee(s) is not advisable or practical for any reason. 

  
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 6. PURCHASE RIGHTS; PURCHASE PRICE. 

(a) On each Offering Date, each Eligible Employee, pursuant to an Offering made under the Plan, will be granted a Purchase Right to
purchase up to that number of shares of Common Stock purchasable either with a percentage or with a maximum dollar amount, as designated by the Board, but in either case not exceeding 15% of such Employee’s earnings (as defined by the Board in
each Offering) during the period that begins on the Offering Date (or such later date as the Board determines for a particular Offering) and ends on the date stated in the Offering, which date will be no later than the end of the Offering. 

(b) The Board will establish one or more Purchase Dates during an Offering on which Purchase Rights granted for that Offering will be
exercised and shares of Common Stock will be purchased in accordance with such Offering. 
 (c) In connection with each Offering made
under the Plan, the Board may specify (i) a maximum number of shares of Common Stock that may be purchased by any Participant on any Purchase Date during such Offering, (ii) a maximum aggregate number of shares of Common Stock that may be
purchased by all Participants pursuant to such Offering and/or (iii) a maximum aggregate number of shares of Common Stock that may be purchased by all Participants on any Purchase Date under the Offering. If the aggregate purchase of shares of
Common Stock issuable upon exercise of Purchase Rights granted under the Offering would exceed any such maximum aggregate number, then, in the absence of any Board action otherwise, a pro rata (based on each Participant’s accumulated
Contributions) allocation of the shares of Common Stock (rounded down to the nearest whole share) available will be made in as nearly a uniform manner as will be practicable and equitable. 

(d) The purchase price of shares of Common Stock acquired pursuant to Purchase Rights will be not less than the lesser of: 

(i) an amount equal to 85% of the Fair Market Value of the shares of Common Stock on the Offering Date; or 

(ii) an amount equal to 85% of the Fair Market Value of the shares of Common Stock on the applicable Purchase Date. 

7. PARTICIPATION; WITHDRAWAL; TERMINATION. 

(a) An Eligible Employee may elect to participate in an Offering and authorize payroll deductions as the means of making Contributions
by completing and delivering to the Company, within the time specified in the Offering, an enrollment form provided by the Company. The enrollment form will specify the amount of Contributions not to exceed the maximum amount specified by the Board.
Each Participant’s Contributions will be credited to a bookkeeping account for such Participant under the Plan and will be deposited with the general funds of the Company except where Applicable Law requires that Contributions be deposited with
a third party. If permitted in the Offering, a Participant may begin such Contributions with the first payroll occurring on or after the Offering Date (or, in the case of a payroll date that occurs after the end of the prior Offering but before the
Offering Date of the next new Offering, Contributions from such payroll will be included in the new Offering). If permitted in the Offering, a Participant may thereafter reduce (including to zero) or increase his or her Contributions. If required
under Applicable Law or if specifically provided in the Offering, in addition to or instead of making Contributions by payroll deductions, a Participant may make Contributions through the payment by cash, check or wire transfer prior to a Purchase
Date. 
 (b) During an Offering, a Participant may cease making Contributions and withdraw from the Offering by delivering to the
Company a withdrawal form provided by the Company. The Company may impose a deadline before a Purchase Date for withdrawing. Upon such withdrawal, such Participant’s Purchase Right in that Offering will immediately terminate and the Company
will distribute as soon as practicable to such Participant all of his or her accumulated but unused Contributions and such Participant’s Purchase Right in that Offering shall thereupon terminate. A Participant’s withdrawal from that
Offering will have no effect upon his or her eligibility to participate in any other Offerings under the Plan, but such Participant will be required to deliver a new enrollment form to participate in subsequent Offerings. 

  
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 (c) Unless otherwise required by Applicable Law, Purchase Rights granted pursuant to
any Offering under the Plan will terminate immediately if the Participant either (i) is no longer an Employee for any reason or for no reason (subject to any post-employment participation period required by law) or (ii) is otherwise no
longer eligible to participate. The Company will distribute as soon as practicable to such individual all of his or her accumulated but unused Contributions. 

(d) Unless otherwise determined by the Board, a Participant whose employment transfers or whose employment terminates with an immediate
rehire (with no break in service) by or between the Company and a Related Corporation that has been designated for participation in the Plan will not be treated as having terminated employment for purposes of participating in the Plan or an
Offering; however, if a Participant transfers from an Offering under the 423 Component to an Offering under the Non-423 Component, the exercise of the Participant’s Purchase Right will be qualified under
the 423 Component only to the extent such exercise complies with Section 423 of the Code. If a Participant transfers from an Offering under the Non-423 Component to an Offering under the 423 Component,
the exercise of the Purchase Right will remain non-qualified under the Non-423 Component. The Board may establish different and additional rules governing transfers
between separate Offerings within the 423 Component and between Offerings under the 423 Component and Offerings under the Non-423 Component. 

(e) During a Participant’s lifetime, Purchase Rights will be exercisable only by such Participant. Purchase Rights are not
transferable by a Participant, except by will, by the laws of descent and distribution, or, if permitted by the Company, by a beneficiary designation as described in Section 10. 

(f) Unless otherwise specified in the Offering or as required by Applicable Law, the Company will have no obligation to pay interest on
Contributions. 
 8. EXERCISE OF PURCHASE RIGHTS. 

(a) On each Purchase Date, each Participant’s accumulated Contributions will be applied to the purchase of shares of Common Stock,
up to the maximum number of shares of Common Stock permitted by the Plan and the applicable Offering, at the purchase price specified in the Offering. No fractional shares will be issued unless specifically provided for in the Offering. 

(b) Unless otherwise provided in the Offering, if any amount of accumulated Contributions remains in a Participant’s account after
the purchase of shares of Common Stock on the final Purchase Date of an Offering, then such remaining amount will not roll over to the next Offering and will instead be distributed in full to such Participant after the final Purchase Date of such
Offering without interest (unless otherwise required by Applicable Law). 
 (c) No Purchase Rights may be exercised to any extent
unless the shares of Common Stock to be issued upon such exercise under the Plan are covered by an effective registration statement pursuant to the Securities Act and the Plan is in material compliance with all applicable U.S. federal and state,
foreign and other securities, exchange control and other laws applicable to the Plan. If on a Purchase Date the shares of Common Stock are not so registered or the Plan is not in such compliance, no Purchase Rights will be exercised on such Purchase
Date, and the Purchase Date will be delayed until the shares of Common Stock are subject to such an effective registration statement and the Plan is in material compliance, except that the Purchase Date will in no event be more than 27 months from
the Offering Date. If, on the Purchase Date, as delayed to the maximum extent permissible, the shares of Common Stock are not registered and the Plan is not in material compliance with all Applicable Laws, as determined by the Company in its sole
discretion, no Purchase Rights will be exercised and all accumulated but unused Contributions will be distributed to the Participants without interest (unless the payment of interest is otherwise required by Applicable Law). 

  
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 9. COVENANTS OF THE COMPANY. 

The Company will seek to obtain from each U.S. federal or state, foreign or other regulatory commission or agency having jurisdiction over the
Plan such authority as may be required to grant Purchase Rights and issue and sell shares of Common Stock thereunder unless the Company determines, in its sole discretion, that doing so would cause the Company to incur costs that are unreasonable.
If, after commercially reasonable efforts, the Company is unable to obtain the authority that counsel for the Company deems necessary for the grant of Purchase Rights or the lawful issuance and sale of Common Stock under the Plan, and at a
commercially reasonable cost, the Company will be relieved from any liability for failure to grant Purchase Rights and/or to issue and sell Common Stock upon exercise of such Purchase Rights. 

10. DESIGNATION OF BENEFICIARY. 

(a) The Company may, but is not obligated to, permit a Participant to submit a form designating a beneficiary who will receive any
shares of Common Stock and/or Contributions from the Participant’s account under the Plan if the Participant dies before such shares and/or Contributions are delivered to the Participant. The Company may, but is not obligated to, permit the
Participant to change such designation of beneficiary. Any such designation and/or change must be on a form approved by the Company. 

(b) If a Participant dies, and in the absence of a valid beneficiary designation, the Company will deliver any shares of Common Stock
and/or Contributions to the executor or administrator of the estate of the Participant. If no executor or administrator has been appointed (to the knowledge of the Company), the Company, in its sole discretion, may deliver such shares of Common
Stock and/or Contributions, without interest (unless the payment of interest is otherwise required by Applicable Law), to the Participant’s spouse, dependents or relatives, or if no spouse, dependent or relative is known to the Company, then to
such other person as the Company may designate. 
 11. ADJUSTMENTS UPON CHANGES IN
COMMON STOCK; CORPORATE TRANSACTIONS. 
 (a) In the event of a
Capitalization Adjustment, the Board will appropriately and proportionately adjust: (i) the class(es) and maximum number of securities subject to the Plan pursuant to Section 3(a), (ii) the class(es) and maximum number of securities by
which the share reserve is to increase automatically each year pursuant to Section 3(a), (iii) the class(es) and number of securities subject to, and the purchase price applicable to outstanding Offerings and Purchase Rights, and (iv) the
class(es) and number of securities that are the subject of the purchase limits under each ongoing Offering. The Board will make these adjustments, and its determination will be final, binding and conclusive. 

(b) In the event of a Corporate Transaction, then: (i) any surviving corporation or acquiring corporation (or the surviving or
acquiring corporation’s parent company) may assume or continue outstanding Purchase Rights or may substitute similar rights (including a right to acquire the same consideration paid to the stockholders in the Corporate Transaction) for
outstanding Purchase Rights, or (ii) if any surviving or acquiring corporation (or its parent company) does not assume or continue such Purchase Rights or does not substitute similar rights for such Purchase Rights, then the
Participants’ accumulated Contributions will be used to purchase shares of Common Stock (rounded down to the nearest whole share) within ten business days prior to the Corporate Transaction under the outstanding Purchase Rights, and the
Purchase Rights will terminate immediately after such purchase. 

  
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 12. AMENDMENT, TERMINATION OR SUSPENSION
OF THE PLAN. 
 (a) The Board may amend the Plan at any time in any respect the Board
deems necessary or advisable. However, except as provided in Section 11(a) relating to Capitalization Adjustments, stockholder approval will be required for any amendment of the Plan for which stockholder approval is required by Applicable Law.

 (b) The Board may suspend or terminate the Plan at any time. No Purchase Rights may be granted under the Plan while the Plan is
suspended or after it is terminated. 
 Any benefits, privileges, entitlements and obligations under any outstanding Purchase Rights granted
before an amendment, suspension or termination of the Plan will not be materially impaired by any such amendment, suspension or termination except (i) with the consent of the person to whom such Purchase Rights were granted, (ii) as
necessary to comply with any laws, listing requirements, or governmental regulations (including, without limitation, the provisions of Section 423 of the Code and the regulations and other interpretive guidance issued thereunder relating to
Employee Stock Purchase Plans) including without limitation any such regulations or other guidance that may be issued or amended after the date the Plan is adopted by the Board, or (iii) as necessary to obtain or maintain favorable tax,
listing, or regulatory treatment. To be clear, the Board may amend outstanding Purchase Rights without a Participant’s consent if such amendment is necessary to ensure that the Purchase Right and/or the Plan complies with the requirements of
Section 423 of the Code with respect to the 423 Component or with respect to other Applicable Laws. Notwithstanding anything in the Plan or any Offering Document to the contrary, the Board will be entitled to: (i) establish the exchange
ratio applicable to amounts withheld in a currency other than U.S. dollars; (ii) permit Contributions in excess of the amount designated by a Participant in order to adjust for mistakes in the Company’s processing of properly completed
Contribution elections; (iii) establish reasonable waiting and adjustment periods and/or accounting and crediting procedures to ensure that amounts applied toward the purchase of Common Stock for each Participant properly correspond with
amounts withheld from the Participant’s Contributions; (iv) amend any outstanding Purchase Rights or clarify any ambiguities regarding the terms of any Offering to enable the Purchase Rights to qualify under and/or comply with
Section 423 of the Code with respect to the 423 Component; and (v) establish other limitations or procedures as the Board determines in its sole discretion advisable that are consistent with the Plan. The actions of the Board pursuant to
this paragraph will not be considered to alter or impair any Purchase Rights granted under an Offering as they are part of the initial terms of each Offering and the Purchase Rights granted under each Offering. 

13. TAX QUALIFICATION; TAX WITHHOLDING. 

(a) Although the Company may endeavor to (i) qualify a Purchase Right for special tax treatment under the laws of the United States
or jurisdictions outside of the United States or (ii) avoid adverse tax treatment, the Company makes no representation to that effect and expressly disavows any covenant to maintain special or to avoid unfavorable tax treatment, notwithstanding
anything to the contrary in this Plan. The Company will be unconstrained in its corporate activities without regard to the potential negative tax impact on Participants. 

(b) Each Participant will make arrangements, satisfactory to the Company and any applicable Related Corporation, to enable the Company
or the Related Corporation to fulfill any withholding obligation for Tax-Related Items. Without limitation to the foregoing, in the Company’s sole discretion and subject to Applicable Law, such
withholding obligation may be satsified in whole or in part by (i) withholding from the Participant’s salary or any other cash payment due to the Participant from the Company or a Related Corporation; (ii) withholding from the proceeds of
the sale of shares of Common Stock acquired under the Plan, either through a voluntary sale or a mandatory sale arranged by the Company; or (iii) any other method deemed acceptable by the Board. 

  
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 14. EFFECTIVE DATE OF PLAN. 

The Plan will become effective immediately prior to and contingent upon the IPO Date. No Purchase Rights will be exercised unless and until the
Plan has been approved by the stockholders of the Company, which approval must be within 12 months before or after the date the Plan is adopted (or if required under Section 12(a) above, materially amended) by the Board. 

15. MISCELLANEOUS PROVISIONS. 

(a) Proceeds from the sale of shares of Common Stock pursuant to Purchase Rights will constitute general funds of the Company. 

(b) A Participant will not be deemed to be the holder of, or to have any of the rights of a holder with respect to, shares of Common
Stock subject to Purchase Rights unless and until the Participant’s shares of Common Stock acquired upon exercise of Purchase Rights are recorded in the books of the Company (or its transfer agent). 

(c) The Plan and Offering do not constitute an employment contract. Nothing in the Plan or in the Offering will in any way alter the at
will nature of a Participant’s employment, if applicable, or be deemed to create in any way whatsoever any obligation on the part of any Participant to continue in the employ of the Company or a Related Corporation, or on the part of the
Company or a Related Corporation to continue the employment of a Participant. 
 (d) The provisions of the Plan will be governed by
the laws of the State of Delaware without resort to that state’s conflicts of laws rules. 
 (e) If any particular provision of
the Plan is found to be invalid or otherwise unenforceable, such provision will not affect the other provisions of the Plan, but the Plan will be construed in all respects as if such invalid provision were omitted. 

(f) If any provision of the Plan does not comply with Applicable Law, such provision shall be construed in such a manner as to comply
with Applicable Law. 
 16. DEFINITIONS. 

As used in the Plan, the following definitions will apply to the capitalized terms indicated below: 

(a) “423 Component” means the part of the Plan, which excludes the
Non-423 Component, pursuant to which Purchase Rights that satisfy the requirements for an Employee Stock Purchase Plan may be granted to Eligible Employees. 

(b) “Applicable Law” means shall mean any applicable securities, federal, state, foreign, material local or
municipal or other law, statute, constitution, principle of common law, resolution, ordinance, code, edict, decree, rule, listing rule, regulation, judicial decision, ruling or requirement issued, enacted, adopted, promulgated, implemented or
otherwise put into effect by or under the authority of any Governmental Body (or under the authority of the Nasdaq Stock Market or the Financial Industry Regulatory Authority). 

  
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 (c) “Board” means the Board of Directors of the
Company. 
 (d) “Capitalization Adjustment” means any change that is made in, or other events that occur with
respect to, the Common Stock subject to the Plan or subject to any Purchase Right after the date the Plan is adopted by the Board without the receipt of consideration by the Company through merger, consolidation, reorganization, recapitalization,
reincorporation, stock dividend, dividend in property other than cash, large nonrecurring cash dividend, stock split, liquidating dividend, combination of shares, exchange of shares, change in corporate structure or other similar equity
restructuring transaction, as that term is used in Financial Accounting Standards Board Accounting Standards Codification Topic 718 (or any successor thereto). Notwithstanding the foregoing, the conversion of any convertible securities of the
Company will not be treated as a Capitalization Adjustment. 
 (e) “Code” means the U.S. Internal
Revenue Code of 1986, as amended, including any applicable regulations and guidance thereunder. 
 (f)
“Committee” means a committee of one or more members of the Board to whom authority has been delegated by the Board in accordance with Section 2(c). 

(g) “Common Stock” means the Common Stock of the Company. 

(h) “Company” means Talis Biomedical Corporation, a Delaware corporation. 

(i) “Contributions” means the payroll deductions and other additional payments specifically provided for in the
Offering that a Participant contributes to fund the exercise of a Purchase Right. A Participant may make additional payments into his or her account if specifically provided for in the Offering, and then only if the Participant has not already had
the maximum permitted amount withheld during the Offering through payroll deductions. 
 (j) “Corporate
Transaction” means the consummation, in a single transaction or in a series of related transactions, of any one or more of the following events: 

(i) a sale or other disposition of all or substantially all, as determined by the Board in its sole discretion, of the
consolidated assets of the Company and its subsidiaries; 
 (ii) a sale or other disposition of more than 50% of the outstanding
securities of the Company; 
 (iii) a merger, consolidation or similar transaction following which the Company is not the surviving
corporation; or 
 (iv) a merger, consolidation or similar transaction following which the Company is the surviving corporation but
the shares of Common Stock outstanding immediately preceding the merger, consolidation or similar transaction are converted or exchanged by virtue of the merger, consolidation or similar transaction into other property, whether in the form of
securities, cash or otherwise. 
 (k) “Director” means a member of the Board. 

  
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 (l) “Eligible Employee” means an Employee who meets
the requirements set forth in the document(s) governing the Offering for eligibility to participate in the Offering, provided that such Employee also meets the requirements for eligibility to participate set forth in the Plan. 

(m) “Employee” means any person, including an Officer or Director, who is “employed” for
purposes of Section 423(b)(4) of the Code by the Company or a Related Corporation. However, service solely as a Director, or payment of a fee for such services, will not cause a Director to be considered an “Employee” for purposes of
the Plan. 
 (n) “Employee Stock Purchase Plan” means a plan that grants Purchase Rights intended to be
options issued under an “employee stock purchase plan,” as that term is defined in Section 423(b) of the Code. 
 (o)
“Exchange Act” means the U.S. Securities Exchange Act of 1934, as amended and the rules and regulations promulgated thereunder. 

(p) “Fair Market Value” means, as of any date, the value of the Common Stock determined as follows: 

(i) If the Common Stock is listed on any established stock exchange or traded on any established market, the Fair Market Value of a
share of Common Stock will be the closing sales price for such stock as quoted on such exchange or market (or the exchange or market with the greatest volume of trading in the Common Stock) on the date of determination, as reported in such source as
the Board deems reliable. Unless otherwise provided by the Board, if there is no closing sales price for the Common Stock on the date of determination, then the Fair Market Value will be the closing sales price on the last preceding date for which
such quotation exists. 
 (ii) In the absence of such markets for the Common Stock, the Fair Market Value will be determined by the
Board in good faith in compliance with Applicable Laws and regulations and in a manner that complies with Sections 409A of the Code 

(iii) Notwithstanding the foregoing, for any Offering that commences on the IPO Date, the Fair Market Value of the shares of Common
Stock on the Offering Date will be the price per share at which shares are first sold to the public in the Company’s initial public offering as specified in the final prospectus for that initial public offering. 

(q) “Governmental Body” means any: (a) nation, state, commonwealth, province,
territory, county, municipality, district or other jurisdiction of any nature; (b) federal, state, local, municipal, foreign or other government; (c) governmental or regulatory body, or quasi-governmental body of any nature (including any
governmental division, department, administrative agency or bureau, commission, authority, instrumentality, official, ministry, fund, foundation, center, organization, unit, body or entity and any court or other tribunal, and for the avoidance of
doubt, any tax authority) or other body exercising similar powers or authority; or (d) self-regulatory organization (including the Nasdaq Stock Market and the Financial Industry Regulatory Authority). 

(r) “IPO Date” means the date of the underwriting agreement between the Company and the underwriters
managing the initial public offering of the Common Stock, pursuant to which the Common Stock is priced for the initial public offering. 

  
 11 

 (s)
“Non-423 Component” means the part of the Plan, which excludes the 423 Component, pursuant to which Purchase
Rights that are not intended to satisfy the requirements for an Employee Stock Purchase Plan may be granted to Eligible Employees. 
 (t)
“Offering” means the grant to Eligible Employees of Purchase Rights, with the exercise of those Purchase Rights automatically occurring at the end of one or more Purchase Periods. The terms and conditions of an
Offering will generally be set forth in the “Offering Document” approved by the Board for that Offering. 
 (u)
“Offering Date” means a date selected by the Board for an Offering to commence. 
 (v)
“Officer” means a person who is an officer of the Company or a Related Corporation within the meaning of Section 16 of the Exchange Act. 

(w) “Participant” means an Eligible Employee who holds an outstanding Purchase Right. 

(x) “Plan” means this Talis Biomedical Corporation 2021 Employee Stock Purchase Plan, as amended from
time to time, including both the 423 Component and the Non-423 Component. 
 (y)
“Purchase Date” means one or more dates during an Offering selected by the Board on which Purchase Rights will be exercised and on which purchases of shares of Common Stock will be carried out in accordance with
such Offering. 
 (z) “Purchase Period” means a period of time specified within an Offering, generally
beginning on the Offering Date or on the first Trading Day following a Purchase Date, and ending on a Purchase Date. An Offering may consist of one or more Purchase Periods. 

(aa) “Purchase Right” means an option to purchase shares of Common Stock granted pursuant to the Plan.

 (bb) “Related Corporation” means any “parent corporation” or “subsidiary
corporation” of the Company whether now or subsequently established, as those terms are defined in Sections 424(e) and (f), respectively, of the Code. 

(cc) “Securities Act” means the U.S. Securities Act of 1933, as amended. 

(dd) “Tax-Related Items” means any income tax, social insurance, payroll
tax, fringe benefit tax, payment on account or other tax-related items arising out of or in relation to a Participant’s participation in the Plan, including, but not limited to, the exercise of a Purchase
Right and the receipt of shares of Common Stock or the sale or other disposition of shares of Common Stock acquired under the Plan. 

(ee) “Trading Day” means any day on which the exchange(s) or market(s) on which shares of Common Stock
are listed, including but not limited to the NYSE, Nasdaq Global Select Market, the Nasdaq Global Market, the Nasdaq Capital Market or any successors thereto, is open for trading. 

  
 12EX-10.5

 Exhibit 10.5 

TALIS BIOMEDICAL CORPORATION 

NON-EMPLOYEE DIRECTOR COMPENSATION
POLICY 
 Each member of the Board of Directors (the “Board”) who is not also serving as an employee of or
consultant to Talis Biomedical Corporation (the “Company”) or any of its subsidiaries (each such member, an “Eligible Director”) will receive the compensation described in this Non-Employee Director Compensation Policy for his or her Board service upon and following the date of the underwriting agreement between the Company and the underwriters managing the initial public offering of the
Company’s common stock (the “Common Stock”), pursuant to which the Common Stock is priced in such initial public offering (the “Effective Date”). An Eligible Director may decline all or any
portion of his or her compensation by giving notice to the Company prior to the date cash may be paid or equity awards are to be granted, as the case may be. This policy is effective as of the Effective Date and may be amended at any time in the
sole discretion of the Board or the Compensation Committee of the Board. 
 Annual Cash Compensation 

The annual cash compensation amount set forth below is payable to Eligible Directors in equal quarterly installments, payable in arrears on the last day of
each fiscal quarter in which the service occurred. If an Eligible Director joins the Board or a committee of the Board at a time other than effective as of the first day of a fiscal quarter, each annual retainer set forth below will be pro-rated based on days served in the applicable fiscal year, with the pro-rated amount paid for the first fiscal quarter in which the Eligible Director provides the service
and regular full quarterly payments thereafter. All annual cash fees are vested upon payment. 
  

	1.	 Annual Board Service Retainer: 

 

	 	a.	 All Eligible Directors: $40,000 

 

	 	b.	 Independent Chair of the Board Service Retainer (in addition to Eligible Director Service Retainer): $40,000

  

	 	c.	 Lead Independent Director Service Retainer (in addition to Eligible Director Service Retainer): $22,500

  

	2.	 Annual Committee Chair Service Retainer: 

 

	 	a.	 Chair of the Audit Committee: $20,000 

 

	 	b.	 Chair of the Compensation Committee: $14,000 

 

	 	c.	 Chair of the Nominating and Corporate Governance Committee: $10,000 

 

	3.	 Annual Committee Member Service Retainer (not applicable to Committee Chairs): 

 

	 	a.	 Member of the Audit Committee: $10,000 

 

	 	b.	 Member of the Compensation Committee: $7,000 

 

	 	c.	 Member of the Nominating and Corporate Governance Committee: $5,000 

  
 1. 

 Equity Compensation 

The equity compensation set forth below will be granted under the Company’s 2021 Equity Incentive Plan (the “Plan”), subject to
the approval of the Plan by the Company’s stockholders. All stock options granted under this policy will be nonstatutory stock options, with an exercise price per share equal to 100% of the Fair Market Value (as defined in the Plan) of the
underlying Common Stock on the date of grant, and a term of ten years from the date of grant (subject to earlier termination in connection with a termination of service as provided in the Plan, provided that upon a termination of service other than
by death or for cause, the post-termination exercise period will be 12 months from the date of termination). 
 1.    Initial
Grant: For each Eligible Director who is first elected or appointed to the Board following the Effective Date, on the date of such Eligible Director’s initial election or appointment to the Board (or, if such date is not a market trading
day, the first market trading day thereafter), the Eligible Director will be automatically, and without further action by the Board or the Compensation Committee of the Board, granted a stock option to purchase shares of Common Stock with an
aggregate Black-Scholes option value of $340,000 (the “Initial Grant”). The shares subject to each Initial Grant will vest in equal monthly installments over a three year period such that the option is fully vested on the
third anniversary of the date of grant, subject to the Eligible Director’s Continuous Service (as defined in the Plan) through each such vesting date and will vest in full upon a Change in Control (as defined in the Plan). 

2.    Annual Grant: On the date of each annual stockholder meeting of the Company held after the Effective Date, each Eligible
Director who continues to serve as a non-employee member of the Board following such stockholder meeting (excluding any Eligible Director who is first appointed or elected to the Board at such meeting) will be
automatically, and without further action by the Board or the Compensation Committee of the Board, granted a stock option to purchase shares of Common Stock with an aggregate Black-Scholes option value of $170,000 (the “Annual
Grant”). The shares subject to the Annual Grant will vest in equal monthly installments over the 12 months following the date of grant, provided that the Annual Grant will in any case be fully vested on the date of the Company’s
next annual stockholder meeting, subject to the Eligible Director’s Continuous Service (as defined in the Plan) through such vesting date and will vest in full upon a Change in Control (as defined in the Plan). With respect to an Eligible
Director who, following the Effective Date, was first elected or appointed to the Board on a date other than the date of the Company’s annual stockholder meeting, upon the Company’s first annual stockholder meeting following such Eligible
Director’s first joining the Board, such Eligible Director’s first Annual Grant will be pro-rated to reflect the time between such Eligible Director’s election or appointment date and the date
of such first annual stockholder meeting. 
 Non-Employee Director Compensation Limit 

Notwithstanding the foregoing, the aggregate value of all compensation granted or paid, as applicable, to any individual for service as a Non-Employee Director (as defined in the Plan) shall in no event exceed the limits set forth in Section 3(d) of the Plan. 

  
 2.

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