EX-10.3



 Exhibit 10.3 

Form of Inducement Grant Award 

Tetraphase Pharmaceuticals, Inc. 

Nonstatutory Stock Option Agreement 
 1. Grant
of Option. 
 This agreement evidences the grant by Tetraphase Pharmaceuticals, Inc., a Delaware corporation (the “Company”),
on             , 20     (the “Grant Date”) to
                    , an employee of the Company (the “Participant”), of an option to purchase, in whole or in part, on the terms provided
herein, a total of                  shares (the “Shares”) of common stock, $0.001 par value per share, of the Company (“Common Stock”) at
$         per Share. Unless earlier terminated, this option shall expire at 5:00 p.m., Eastern time, on             , 20     (the
“Final Exercise Date”). 
 The option evidenced by this agreement was granted to the Participant pursuant to the inducement grant
exception under NASDAQ Stock Market Rule 5635(c)(4), and not pursuant to the Company’s 2013 Stock Incentive Plan (the “Plan”) or any equity incentive plan of the Company, as an inducement that is material to the Participant’s
employment with the Company. 
 It is intended that the option evidenced by this agreement shall not be an incentive stock option as defined
in Section 422 of the Internal Revenue Code of 1986, as amended, and any regulations promulgated thereunder (the “Code”). Except as otherwise indicated by the context, the term “Participant”, as used in this option, shall be
deemed to include any person who acquires the right to exercise this option validly under its terms. 
 2. Vesting Schedule. 

This option will become exercisable (“vest”) as to
                    . 
 The right of
exercise shall be cumulative so that to the extent the option is not exercised in any period to the maximum extent permissible it shall continue to be exercisable, in whole or in part, with respect to all Shares for which it is vested until the
earlier of the Final Exercise Date or the termination of this option. 
 3. Exercise of Option. 

(a) Form of Exercise. Each election to exercise this option shall be in writing, signed by the Participant, and received by the Company
at its principal office, accompanied by this agreement and payment in full as follows: 
 (1) in cash or by check payable to the order of
the Company; 
 (2) by (i) delivery of an irrevocable and unconditional undertaking by a creditworthy broker to deliver promptly to the
Company sufficient funds to pay the exercise price and any required tax withholding or (ii) delivery by the Participant to the Company of a 

  
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copy of irrevocable and unconditional instructions to a creditworthy broker to deliver promptly to the Company cash or a check sufficient to pay the exercise price and any required tax
withholding; 
 (3) to the extent approved by the Board of Directors of the Company (the “Board”), in its sole discretion, by
delivery (either by actual delivery or attestation) of shares of Common Stock owned by the Participant valued at their fair market value per share as determined by (or in a manner approved by) the Board (the “Fair Market Value”), provided
(i) such method of payment is then permitted under applicable law, (ii) such Common Stock, if acquired directly from the Company, was owned by the Participant for such minimum period of time, if any, as may be established by the Board in
its discretion and (iii) such Common Stock is not subject to any repurchase, forfeiture, unfulfilled vesting or other similar requirements; 

(4) to the extent approved by the Board, in its sole discretion, by delivery of a notice of “net exercise” to the Company, as a
result of which the Participant would receive (i) the number of shares underlying the portion of this option being exercised, less (ii) such number of shares as is equal to (A) the aggregate exercise price for the portion of this
option being exercised divided by (B) the Fair Market Value on the date of exercise; 
 (5) to the extent permitted by applicable law
and approved by the Board, in its sole discretion, by payment of such other lawful consideration as the Board may determine; or 
 (6) by
any combination of the above permitted forms of payment. 
 The Participant may purchase less than the number of shares covered hereby, provided that no
partial exercise of this option may be for any fractional share. 
 (b) Continuous Relationship with the Company Required. Except as
otherwise provided in this Section 3, this option may not be exercised unless the Participant, at the time he or she exercises this option, is, and has been at all times since the Grant Date, an employee, officer or a director of, or consultant
or advisor to, the Company or any other entity the employees, officers, directors, consultants, or advisors of which are eligible to receive option grants under the Plan (an “Eligible Participant”). 

(c) Termination of Relationship with the Company. If the Participant ceases to be an Eligible Participant for any reason, then, except
as provided in paragraphs (d) or (e) below, the right to exercise this option shall terminate three months after such cessation (but in no event after the Final Exercise Date), provided that this option shall be exercisable
only to the extent that the Participant was entitled to exercise this option on the date of such cessation. Notwithstanding the foregoing, if the Participant, prior to the Final Exercise Date, violates the non-competition or confidentiality
provisions of any employment contract, confidentiality and nondisclosure agreement or other agreement between the Participant and the Company, the right to exercise this option shall terminate immediately upon written notice to the Participant from
the Company describing such violation. 
 (d) Exercise Period Upon Death or Disability. If the Participant dies or becomes disabled
(within the meaning of Section 22(e)(3) of the Code) prior to the Final Exercise Date 

  
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while he or she is an Eligible Participant and the Company has not terminated such relationship for “cause” as specified in paragraph (e) below, this option shall be exercisable,
within the period of one year following the date of death or disability of the Participant, by the Participant (or in the case of death by an authorized transferee), provided that this option shall be exercisable only to the extent
that this option was exercisable by the Participant on the date of his or her death or disability, and further provided that this option shall not be exercisable after the Final Exercise Date. 

(e) Termination for Cause. If, prior to the Final Exercise Date, the Participant’s employment or other relationship with the
Company is terminated by the Company for Cause (as defined below), the right to exercise this option shall terminate immediately upon the effective date of such termination of employment or other relationship. If, prior to the Final Exercise Date,
the Participant is given notice by the Company of the termination of his or her employment or other relationship by the Company for Cause, and the effective date of such employment or other termination is subsequent to the date of the delivery of
such notice, the right to exercise this option shall be suspended from the time of the delivery of such notice until the earlier of (i) such time as it is determined or otherwise agreed that the Participant’s employment or other
relationship shall not be terminated for Cause as provided in such notice or (ii) the effective date of such termination of employment or other relationship (in which case the right to exercise this option shall, pursuant to the preceding
sentence, terminate immediately upon the effective date of such termination of employment or other relationship). If the Participant is party to an employment, consulting or severance agreement with the Company that contains a definition of
“cause” for termination of employment or other relationship, “Cause” shall have the meaning ascribed to such term in such agreement. Otherwise, “Cause” shall mean willful misconduct by the Participant or willful failure
by the Participant to perform his or her responsibilities to the Company (including, without limitation, breach by the Participant of any provision of any employment, consulting, advisory, nondisclosure, non-competition or other similar agreement
between the Participant and the Company), as determined by the Company, which determination shall be conclusive. The Participant shall be considered to have been discharged for “Cause” if the Company determines, within 30 days after the
Participant’s resignation, that discharge for cause was warranted. 
 4. Transfer Restrictions. This option may not be sold, assigned,
transferred, pledged or otherwise encumbered by the Participant, either voluntarily or by operation of law, except by will or the laws of descent and distribution, and, during the lifetime of the Participant, this option shall be exercisable only by
the Participant. 
 5. Adjustments for Changes in Common Stock and Certain Other Events. 

(a) Changes in Capitalization. In the event of any stock split, reverse stock split, stock dividend, recapitalization, combination of
shares, reclassification of shares, spin-off or other similar change in capitalization or event, or any dividend or distribution to holders of Common Stock other than an ordinary cash dividend, the number and class of securities and exercise price
per share of this option shall be equitably adjusted by the Company (or substituted options may be granted, if applicable) in the manner determined by the Board. Without limiting the generality of the foregoing, in the event the Company effects a
split of the Common Stock by means of a stock dividend and the exercise price of and the number of shares subject to this 

  
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option are adjusted as of the date of the distribution of the dividend (rather than as of the record date for such dividend), then the Participant, if he exercises this option between the record
date and the distribution date for such stock dividend, shall be entitled to receive, on the distribution date, the stock dividend with respect to the shares of Common Stock acquired upon exercise of this option, notwithstanding the fact that such
shares were not outstanding as of the close of business on the record date for such stock dividend. 
 (b) Reorganization Events.

 (1) Definition. A “Reorganization Event” shall mean: (a) any merger or consolidation of the Company with or into
another entity as a result of which all of the Common Stock of the Company is converted into or exchanged for the right to receive cash, securities or other property or is cancelled, (b) any transfer or disposition of all of the Common Stock of
the Company for cash, securities or other property pursuant to a share exchange or other transaction or (c) any liquidation or dissolution of the Company. 

(2) Consequences of a Reorganization Event on Awards Other than Restricted Stock. 

(A) In connection with a Reorganization Event, the Board may take any one or more of the following actions with respect to this option (or
any portion of this option) on such terms as the Board determines (except to the extent specifically provided otherwise in another agreement between the Company and the Participant): (i) provide that this option shall be assumed, or a
substantially equivalent option shall be substituted, by the acquiring or succeeding corporation (or an affiliate thereof), (ii) upon written notice to the Participant, provide that the unexercised portion of this option will terminate
immediately prior to the consummation of such Reorganization Event unless exercised by the Participant (to the extent then exercisable) within a specified period following the date of such notice, (iii) provide that this option shall become
exercisable in whole or in part prior to or upon such Reorganization Event, (iv) in the event of a Reorganization Event under the terms of which holders of Common Stock will receive upon consummation thereof a cash payment for each share
surrendered in the Reorganization Event (the “Acquisition Price”), make or provide for a cash payment to the Participant with respect to this option equal to (A) the number of shares of Common Stock subject to the vested portion of
this option (after giving effect to any acceleration of vesting that occurs upon or immediately prior to such Reorganization Event) multiplied by (B) the excess, if any, of (I) the Acquisition Price over (II) the exercise price of this
option and any applicable tax withholdings, in exchange for the termination of this option, (v) provide that, in connection with a liquidation or dissolution of the Company, this option shall convert into the right to receive liquidation
proceeds (if applicable, net of the exercise price hereof and any applicable tax withholdings) and (vi) any combination of the foregoing. 

(B) For purposes of Section 5(b)(2)(A)(i), this option shall be considered assumed if, following consummation of the Reorganization
Event, this option confers the right to purchase, for each share of Common Stock subject to this option immediately prior to the consummation of the Reorganization Event, the consideration (whether cash, securities or other property) received as a
result of the Reorganization Event by holders of Common Stock for each share of Common Stock held immediately prior to the consummation of the Reorganization 

  
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Event (and if holders were offered a choice of consideration, the type of consideration chosen by the holders of a majority of the outstanding shares of Common Stock); provided, however,
that if the consideration received as a result of the Reorganization Event is not solely common stock of the acquiring or succeeding corporation (or an affiliate thereof), the Company may, with the consent of the acquiring or succeeding corporation,
provide for the consideration to be received upon the exercise of this option to consist solely of such number of shares of common stock of the acquiring or succeeding corporation (or an affiliate thereof) that the Board determined to be equivalent
in value (as of the date of such determination or another date specified by the Board) to the per share consideration received by holders of outstanding shares of Common Stock as a result of the Reorganization Event. 

6. Miscellaneous. 
 (a) No Right To
Employment or Other Status. The grant of this option shall not be construed as giving the Participant the right to continued employment or any other relationship with the Company. The Company expressly reserves the right at any time to dismiss
or otherwise terminate its relationship with the Participant free from any liability or claim hereunder. 
 (b) No Rights As
Stockholder. Subject to the provisions of this option, the Participant shall not have any rights as a stockholder with respect to any shares of Common Stock to be distributed with respect to this option until becoming the record holder of such
shares. 
 (c) Amendment. The Board may amend, modify or terminate this Agreement, including but not limited to, substituting another
option of the same or a different type and changing the date of exercise or realization. Notwithstanding the foregoing, the Participant’s consent to such action shall be required unless the Board determines that the action, taking into account
any related action, would not materially and adversely affect the Participant. 
 (d) Compliance with Code Section 409A. This
Agreement does not, and shall not be amended so as to, provide for deferral of compensation that does not comply with Section 409A of the Code, unless the Board, at the time of amendment, specifically provides that this Agreement is not
intended to comply with Section 409A of the Code. 
 (e) Acceleration. The Board may at any time provide that this option shall
become immediately exercisable in whole or in part, free of some or all restrictions or conditions, or otherwise realizable in whole or in part, as the case may be. 

(f) Withholding. The Participant must satisfy all applicable federal, state, and local or other income and employment tax withholding
obligations before the Company will deliver stock certificates or otherwise recognize ownership of Common Stock under this option. The Company may decide to satisfy the withholding obligations through additional withholding on salary or wages. If
the Company elects not to or cannot withhold from other compensation, the Participant must pay the Company the full amount, if any, required for withholding or have a broker tender to the Company cash equal to the withholding obligations. Payment of
withholding obligations is due before the Company will issue any shares on exercise of this option or at the 

  
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same time as payment of the exercise price, unless the Company determines otherwise. If approved by the Board, in its sole discretion, a Participant may satisfy such tax obligations in whole or
in part by delivery (either by actual delivery or attestation) of shares of Common Stock underlying this option valued at their Fair Market Value; provided, however, except as otherwise provided by the Board, that the total tax withholding
where stock is being used to satisfy such tax obligations cannot exceed the Company’s minimum statutory withholding obligations (based on minimum statutory withholding rates for federal and state tax purposes, including payroll taxes, that are
applicable to such supplemental taxable income). Shares used to satisfy tax withholding requirements cannot be subject to any forfeiture, unfulfilled vesting or other similar requirements. 

(g) Conditions on Delivery of Stock. The Company will not be obligated to deliver any shares of Common Stock pursuant to this Agreement
until (i) all conditions of this Agreement have been met to the satisfaction of the Company, (ii) in the opinion of the Company’s counsel, all other legal matters in connection with the issuance and delivery of such shares have been
satisfied, including any applicable securities laws and regulations and any applicable stock exchange or stock market rules and regulations, and (iii) the Participant has executed and delivered to the Company such representations or agreements
as the Company may consider appropriate to satisfy the requirements of any applicable laws, rules or regulations. 
 (h) Administration
by Board. The Board will administer this Agreement and may construe and interpret the terms hereof. The Board may correct any defect, supply any omission or reconcile any inconsistency in this Agreement in the manner and to the extent it shall
deem expedient to carry the Agreement into effect and it shall be the sole and final judge of such expediency. No director or person acting pursuant to the authority delegated by the Board shall be liable for any action or determination relating to
or under this Agreement made in good faith. 
 (i) Appointment of Committees. To the extent permitted by applicable law, the Board
may delegate any or all of its powers hereunder to one or more committees or subcommittees of the Board (a “Committee”). All references herein to the “Board” shall mean the Board or a Committee to the extent that the Board’s
powers or authority hereunder have been delegated to such Committee. 
 (j) Severability. The invalidity or unenforceability of any
provision hereof shall not affect the validity or enforceability of any other provision hereof, and each such other provision shall be severable and enforceable to the extent permitted by law. 

(k) Governing Law. This Agreement shall be governed by and interpreted in accordance with the laws of the State of Delaware, excluding
choice-of-law principles of the law of such state that would require the application of the laws of a jurisdiction other than the State of Delaware. 

(l) Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original but all
of which together will constitute one in the same instrument. 

  
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 The Company has caused this option to be executed by its duly authorized officer. 

 

			
	TETRAPHASE PHARMACEUTICALS, INC.
		
	By:		  

	Name:		  

	Title:		  




  
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 PARTICIPANT’S ACCEPTANCE 

The undersigned hereby accepts the foregoing option and agrees to the terms and conditions thereof. 

 

			
	PARTICIPANT
	
	  

	Name:		  

		
	Address:		  

	  

	Telephone:		  




  
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