Document:

EX-10.2

 Exhibit 10.2 

SI-BONE, INC. 

2008 STOCK PLAN 

ADOPTED ON APRIL 2, 2008 

AMENDED ON JUNE 20, 2009, DECEMBER 15,
2009, AUGUST 3, 2010, JUNE 24, 2011,
 SEPTEMBER 19,
2011, JANUARY 16, 2014, APRIL 21, 2014, APRIL 15, 2015, MARCH 1, 2017, MARCH 17, 2017, AND OCTOBER 4, 2018. 

 

 SI-BONE, INC. 2008 STOCK PLAN 

SECTION 1. ESTABLISHMENT AND PURPOSE. 

The purpose of the Plan is to offer selected persons an opportunity to acquire a proprietary interest in the success of the Company, or to
increase such interest, by purchasing Shares of the Company’s Stock. The Plan provides both for the direct award or sale of Shares and for the grant of Options to purchase Shares. Options granted under the Plan may include Nonstatutory Options
as well as ISOs intended to qualify under Section 422 of the Code. 
 Capitalized terms are defined in Section 12. 

SECTION 2. ADMINISTRATION. 
 (a)
Committees of the Board of Directors. The Plan may be administered by one or more Committees. Each Committee shall consist of one or more members of the Board of Directors who have been appointed by the Board of Directors. Each Committee shall
have such authority and be responsible for such functions as the Board of Directors has assigned to it. If no Committee has been appointed, the entire Board of Directors shall administer the Plan. Any reference to the Board of Directors in the Plan
shall be construed as a reference to the Committee (if any) to whom the Board of Directors has assigned a particular function. 
 (b)
Authority of the Board of Directors. Subject to the provisions of the Plan, the Board of Directors shall have full authority and discretion to take any actions it deems necessary or advisable for the administration of the Plan. All decisions,
interpretations and other actions of the Board of Directors shall be final and binding on all Purchasers, all Optionees and all persons deriving their rights from a Purchaser or Optionee. 

SECTION 3. ELIGIBILITY. 
 (a) General
Rule. Only Employees, Outside Directors and Consultants shall be eligible for the grant of Nonstatutory Options or the direct award or sale of Shares. Only Employees shall be eligible for the grant of ISOs. 

(b) Ten-Percent Stockholders. A person who owns more than 10% of the total combined voting power
of all classes of outstanding stock of the Company, its Parent or any of its Subsidiaries shall not be eligible for the grant of an ISO unless (i) the Exercise Price is at least 110% of the Fair Market Value of a Share on the date of grant and
(ii) such ISO by its terms is not exercisable after the expiration of five years from the date of grant. For purposes of this Subsection (b), in determining stock ownership, the attribution rules of Section 424(d) of the Code shall be
applied. 

 SECTION 4. STOCK SUBJECT TO PLAN. 

(a) Basic Limitation. Not more than 5,372,2861 Shares may be issued under the Plan
(subject to Subsection (b) below and Section 8(a)). All of these Shares may be issued upon the exercise of ISOs. The number of Shares that are subject to Options or other rights outstanding at any time under the Plan shall not exceed the
number of Shares that then remain available for issuance under the Plan. The Company, during the term of the Plan, shall at all times reserve and keep available sufficient Shares to satisfy the requirements of the Plan. Shares offered under the Plan
may be authorized but unissued Shares or treasury Shares. 
 (b) Additional Shares. In the event that Shares previously issued under
the Plan are reacquired by the Company, such Shares shall be added to the number of Shares then available for issuance under the Plan. In the event that an outstanding Option or other right for any reason expires or is canceled, the Shares allocable
to the unexercised portion of such Option or other right shall be added to the number of Shares then available for issuance under the Plan. 
 SECTION 5.
TERMS AND CONDITIONS OF AWARDS OR SALES. 
 (a) Stock Purchase Agreement. Each award or sale of Shares under the Plan (other than
upon exercise of an Option) shall be evidenced by a Stock Purchase Agreement between the Purchaser and the Company. Such award or sale shall be subject to all applicable terms and conditions of the Plan and may be subject to any other terms and
conditions which are not inconsistent with the Plan and which the Board of Directors deems appropriate for inclusion in a Stock Purchase Agreement. The provisions of the various Stock Purchase Agreements entered into under the Plan need not be
identical. 
 (b) Duration of Offers and Nontransferability of Rights. Any right to acquire Shares under the Plan (other than an
Option) shall automatically expire if not exercised by the Purchaser within 30 days after the grant of such right was communicated to the Purchaser by the Company. Such right shall not be transferable and shall be exercisable only by the Purchaser
to whom such right was granted. 
 (c) Purchase Price. The Board of Directors shall determine the Purchase Price of Shares to be
offered under the Plan at its sole discretion. The Purchase Price shall be payable in a form described in Section 7. 
 (d)
Withholding Taxes. As a condition to the purchase of Shares, the Purchaser shall make such arrangements as the Board of Directors may require for the satisfaction of any federal, state, local or foreign withholding tax obligations that may arise
in connection with such purchase. 
  

	1 	 Reflects the adoption of 1,470,577 shares under the Plan approved by the Board of Directors on April 2,
2008, the 5,500,000-share increase approved by the Board of Directors on June 20, 2009, the 7,000,000-share increase approved by the Board of Directors on December 15, 2009, the 19,809,567-share increase approved by the Board of Directors
on August 3, 2010, the 2,500,000-share increase approved by the Board of Directors on June 24, 2011, the 11,538,771-share increase approved by the Board of Directors on September 19, 2011, the 5,000,000-share increase approved by the
Board of Directors on January 16, 2014, the 13,765,858-share increase approved by the Board of Directors on April 21, 2014, the 12,228,260-share increase approved by the Board of Directors on April 15, 2015, the 5,000,000-share
increase approved by the Board of Directors on March 1, 2017, the 2,800,000-share increase approved by the Board of Directors on March 17, 2017, and the 18:1 Reverse Stock Split approved by the Board of Directors on October 2, 2018.

 (e) Restrictions on Transfer of Shares. Any Shares awarded or sold under the Plan
shall be subject to such special forfeiture conditions, rights of repurchase, rights of first refusal and other transfer restrictions as the Board of Directors may determine. Such restrictions shall be set forth in the applicable Stock Purchase
Agreement and shall apply in addition to any restrictions that may apply to holders of Shares generally. 
 SECTION 6. TERMS AND CONDITIONS OF OPTIONS.

 (a) Stock Option Agreement. Each grant of an Option under the Plan shall be evidenced by a Stock Option Agreement between the
Optionee and the Company. The Option shall be subject to all applicable terms and conditions of the Plan and may be subject to any other terms and conditions which are not inconsistent with the Plan and which the Board of Directors deems appropriate
for inclusion in a Stock Option Agreement. The provisions of the various Stock Option Agreements entered into under the Plan need not be identical. 

(b) Number of Shares. Each Stock Option Agreement shall specify the number of Shares that are subject to the Option and shall provide
for the adjustment of such number in accordance with Section 8. The Stock Option Agreement shall also specify whether the Option is an ISO or a Nonstatutory Option. 

(c) Exercise Price. Each Stock Option Agreement shall specify the Exercise Price. The Exercise Price of any Option shall not be less
than 100% of the Fair Market Value of a Share on the date of grant, and in the case of an ISO a higher percentage may be required by Section 3(b). Subject to the preceding sentence, the Exercise Price shall be determined by the Board of
Directors at its sole discretion. The Exercise Price shall be payable in a form described in Section 7. 
 (d) Exercisability.
Each Stock Option Agreement shall specify the date when all or any installment of the Option is to become exercisable. No Option shall be exercisable unless the Optionee (i) has delivered an executed copy of the Stock Option Agreement to the
Company or (ii) otherwise agrees to be bound by the terms of the Stock Option Agreement. The Board of Directors shall determine the exercisability provisions of the Stock Option Agreement at its sole discretion. All of an Optionee’s
Options shall become exercisable in full if Section 8(b)(iv) applies. 
 (e) Basic Term. The Stock Option Agreement shall specify
the term of the Option. The term shall not exceed 10 years from the date of grant, and in the case of an ISO a shorter term may be required by Section 3(b). Subject to the preceding sentence, the Board of Directors at its sole discretion shall
determine when an Option is to expire. 
 (f) Termination of Service (Except by Death). If an Optionee’s Service terminates for
any reason other than the Optionee’s death, then the Optionee’s Options shall expire on the earliest of the following occasions: 

(i) The expiration date determined pursuant to Subsection (e) above; 

 (ii) The date three months after the termination of the Optionee’s
Service for any reason other than Disability, or such later date as the Board of Directors may determine; or 
 (iii) The
date six months after the termination of the Optionee’s Service by reason of Disability, or such later date as the Board of Directors may determine. 

The Optionee may exercise all or part of the Optionee’s Options at any time before the expiration of such Options under the preceding sentence, but only
to the extent that such Options had become exercisable before the Optionee’s Service terminated (or became exercisable as a result of the termination) and the underlying Shares had vested before the Optionee’s Service terminated (or vested
as a result of the termination). The balance of such Options shall lapse when the Optionee’s Service terminates. In the event that the Optionee dies after the termination of the Optionee’s Service but before the expiration of the
Optionee’s Options, all or part of such Options may be exercised (prior to expiration) by the executors or administrators of the Optionee’s estate or by any person who has acquired such Options directly from the Optionee by beneficiary
designation, bequest or inheritance, but only to the extent that such Options had become exercisable before the Optionee’s Service terminated (or became exercisable as a result of the termination) and the underlying Shares had vested before the
Optionee’s Service terminated (or vested as a result of the termination). 
 (g) Leaves of Absence. For purposes of
Subsection (f) above, Service shall be deemed to continue while the Optionee is on a bona fide leave of absence, if such leave was approved by the Company in writing and if continued crediting of Service for this purpose is expressly required
by the terms of such leave or by applicable law (as determined by the Company). 
 (h) Death of Optionee. If an Optionee dies while
the Optionee is in Service, then the Optionee’s Options shall expire on the earlier of the following dates: 
 (i) The
expiration date determined pursuant to Subsection (e) above; or 
 (ii) The date 12 months after the Optionee’s
death, or such later date as the Board of Directors may determine. 
 All or part of the Optionee’s Options may be exercised at any time before the
expiration of such Options under the preceding sentence by the executors or administrators of the Optionee’s estate or by any person who has acquired such Options directly from the Optionee by beneficiary designation, bequest or inheritance,
but only to the extent that such Options had become exercisable before the Optionee’s death (or became exercisable as a result of the death) and the underlying Shares had vested before the Optionee’s death (or vested as a result of the
Optionee’s death). The balance of such Options shall lapse when the Optionee dies. 
 (i) Restrictions on Transfer of Shares. Any
Shares issued upon exercise of an Option shall be subject to such special forfeiture conditions, rights of repurchase, rights of first refusal and other transfer restrictions as the Board of Directors may determine. Such restrictions shall be set
forth in the applicable Stock Option Agreement and shall apply in addition to any restrictions that may apply to holders of Shares generally. 

 (j) Transferability of Options. An Option shall be transferable by the Optionee only
by (i) a beneficiary designation, (ii) a will or (iii) the laws of descent and distribution, except as provided in the next sentence. If the applicable Stock Option Agreement so provides, a Nonstatutory Option shall also be
transferable by gift or domestic relations order to a Family Member of the Optionee. An ISO may be exercised during the lifetime of the Optionee only by the Optionee or by the Optionee’s guardian or legal representative. 

(k) Withholding Taxes. As a condition to the exercise of an Option, the Optionee shall make such arrangements as the Board of Directors
may require for the satisfaction of any federal, state, local or foreign withholding tax obligations that may arise in connection with such exercise. The Optionee shall also make such arrangements as the Board of Directors may require for the
satisfaction of any federal, state, local or foreign withholding tax obligations that may arise in connection with the disposition of Shares acquired by exercising an Option. 

(l) No Rights as a Stockholder. An Optionee, or a transferee of an Optionee, shall have no rights as a stockholder with respect to any
Shares covered by the Optionee’s Option until such person becomes entitled to receive such Shares by filing a notice of exercise and paying the Exercise Price pursuant to the terms of such Option. 

(m) Modification, Extension and Assumption of Options. Within the limitations of the Plan, the Board of Directors may modify, extend or
assume outstanding Options or may accept the cancellation of outstanding Options (whether granted by the Company or another issuer) in return for the grant of new Options for the same or a different number of Shares and at the same or a different
Exercise Price. The foregoing notwithstanding, no modification of an Option shall, without the consent of the Optionee, impair the Optionee’s rights or increase the Optionee’s obligations under such Option. 

SECTION 7. PAYMENT FOR SHARES. 
 (a)
General Rule. The entire Purchase Price or Exercise Price of Shares issued under the Plan shall be payable in cash or cash equivalents at the time when such Shares are purchased, except as otherwise provided in this Section 7. 

(b) Services Rendered. At the discretion of the Board of Directors, Shares may be awarded under the Plan in consideration of services
rendered to the Company, a Parent or a Subsidiary prior to the award. 
 (c) Promissory Note. At the discretion of the Board of
Directors, all or a portion of the Purchase Price or Exercise Price (as the case may be) of Shares issued under the Plan may be paid with a full-recourse promissory note. The Shares shall be pledged as security for payment of the principal amount of
the promissory note and interest thereon. The interest rate payable under the terms of the promissory note shall not be less than the minimum rate (if any) required to avoid the imputation of additional interest under the Code. Subject to the
foregoing, the Board of Directors (at its sole discretion) shall specify the term, interest rate, amortization requirements (if any) and other provisions of such note. 

 (d) Surrender of Stock. At the discretion of the Board of Directors, all or any part
of the Exercise Price may be paid by surrendering, or attesting to the ownership of, Shares that are already owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer and shall be valued at their Fair Market
Value as of the date when the Option is exercised. 
 (e) Exercise/Sale. To the extent that a Stock Option Agreement so provides, and
if Stock is publicly traded, all or part of the Exercise Price and any withholding taxes may be paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and
to deliver all or part of the sales proceeds to the Company. 
 (f) Other Forms of Payment. To the extent that a Stock Purchase
Agreement or Stock Option Agreement so provides, the Purchase Price or Exercise Price of Shares issued under the Plan may be paid in any other form permitted by the Delaware General Corporation Law, as amended. 

SECTION 8. ADJUSTMENT OF SHARES. 
 (a)
General. In the event of a subdivision of the outstanding Stock, a declaration of a dividend payable in Shares, a combination or consolidation of the outstanding Stock into a lesser number of Shares, a reclassification, or any other increase or
decrease in the number of issued shares of Stock effected without receipt of consideration by the Company, proportionate adjustments shall automatically be made in each of (i) the number of Shares available for future grants under
Section 4, (ii) the number of Shares covered by each outstanding Option and (iii) the Exercise Price under each outstanding Option. In the event of a declaration of an extraordinary dividend payable in a form other than Shares in an
amount that has a material effect on the Fair Market Value of the Stock, a recapitalization, a spin-off, or a similar occurrence, the Board of Directors at its sole discretion may make appropriate adjustments in one or more of (i) the number of
Shares available for future grants under Section 4, (ii) the number of Shares covered by each outstanding Option or (iii) the Exercise Price under each outstanding Option; provided, however, that the Board of Directors shall in any
event make such adjustments as may be required by Section 25102(o) of the California Corporations Code. 
 (b) Mergers and
Consolidations. In the event that the Company is a party to a merger or consolidation, all Shares acquired under the Plan and all Options shall be subject to the agreement of merger or consolidation. Such agreement need not treat all Options in
an identical manner, and it shall provide for one or more of the following with respect to each Option: 
 (i) The
continuation of the Option by the Company (if the Company is the surviving corporation). 
 (ii) The assumption of the Option
by the surviving corporation or its parent in a manner that complies with Section 424(a) of the Code (whether or not the Option is an ISO). 

 (iii) The substitution by the surviving corporation or its parent of a new
option for the Option in a manner that complies with Section 424(a) of the Code (whether or not the Option is an ISO). 

(iv) Full exercisability of the Option and full vesting of the Shares subject to the Option, followed by the cancellation of
the Option. The full exercisability of the Option and full vesting of the Shares subject to the Option may be contingent on the closing of such merger or consolidation. The Optionee shall be able to exercise the Option during a period of not less
than five full business days preceding the closing date of such merger or consolidation, unless (A) a shorter period is required to permit a timely closing of such merger or consolidation and (B) such shorter period still offers the
Optionee a reasonable opportunity to exercise the Option. Any exercise of the Option during such period may be contingent on the closing of such merger or consolidation. 

(v) The cancellation of the Option and a payment to the Optionee equal to the excess of (A) the Fair Market Value of the
Shares subject to the Option (whether or not the Option is then exercisable or such Shares are then vested) as of the closing date of such merger or consolidation over (B) the Exercise Price of the Option. Such payment shall be made in the form
of cash, cash equivalents, or securities of the surviving corporation or its parent with a Fair Market Value equal to the required amount. Subject to Section 409A of the Code, such payment may be made in installments and may be deferred until
the date or dates when the Option would have become exercisable or such Shares would have vested. Such payment may be subject to vesting based on the Optionee’s continuing Service, provided that the vesting schedule shall not be less favorable
to the Optionee than the schedule under which the Option would have become exercisable or such Shares would have vested. If the Exercise Price of the Shares subject to the Option exceeds the Fair Market Value of such Shares, then the Option may be
cancelled without making a payment to the Optionee. For purposes of this Paragraph (v), the Fair Market Value of any security shall be determined without regard to any vesting conditions that may apply to such security. 

(c) Reservation of Rights. Except as provided in this Section 8, an Optionee or Purchaser shall have no rights by reason of
(i) any subdivision or consolidation of shares of stock of any class, (ii) the payment of any dividend or (iii) any other increase or decrease in the number of shares of stock of any class. Any issuance by the Company of shares of
stock of any class, or securities convertible into shares of stock of any class, shall not affect, and no adjustment by reason thereof shall be made with respect to, the number or Exercise Price of Shares subject to an Option. The grant of an Option
pursuant to the Plan shall not affect in any way the right or power of the Company to make adjustments, reclassifications, reorganizations or changes of its capital or business structure, to merge or consolidate or to dissolve, liquidate, sell or
transfer all or any part of its business or assets. 

 SECTION 9. SECURITIES LAW REQUIREMENTS. 

Shares shall not be issued under the Plan unless the issuance and delivery of such Shares comply with (or are exempt from) all applicable
requirements of law, including (without limitation) the Securities Act of 1933, as amended, the rules and regulations promulgated thereunder, state securities laws and regulations, and the regulations of any stock exchange or other securities market
on which the Company’s securities may then be traded. 
 SECTION 10. NO RETENTION RIGHTS. 

Nothing in the Plan or in any right or Option granted under the Plan shall confer upon the Purchaser or Optionee any right to continue in
Service for any period of specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Purchaser or Optionee) or of the Purchaser or Optionee, which rights are
hereby expressly reserved by each, to terminate his or her Service at any time and for any reason, with or without cause. 
 SECTION 11. DURATION AND
AMENDMENTS. 
 (a) Term of the Plan. The Plan, as set forth herein, shall become effective on the date of its adoption by the
Board of Directors, subject to the approval of the Company’s stockholders. If the stockholders fail to approve the Plan within 12 months after its adoption by the Board of Directors, then any grants, exercises or sales that have already
occurred under the Plan shall be rescinded and no additional grants, exercises or sales shall thereafter be made under the Plan. The Plan shall terminate automatically 10 years after the later of (i) the date when the Board of Directors adopted
the Plan or (ii) the date when the Board of Directors approved the most recent increase in the number of Shares reserved under Section 4 that was also approved by the Company’s stockholders. The Plan may be terminated on any earlier
date pursuant to Subsection (b) below. 
 (b) Right to Amend or Terminate the Plan. The Board of Directors may amend, suspend or
terminate the Plan at any time and for any reason; provided, however, that any amendment of the Plan shall be subject to the approval of the Company’s stockholders if it (i) increases the number of Shares available for issuance under the
Plan (except as provided in Section 8) or (ii) materially changes the class of persons who are eligible for the grant of ISOs. Stockholder approval shall not be required for any other amendment of the Plan. If the stockholders fail to
approve an increase in the number of Shares reserved under Section 4 within 12 months after its adoption by the Board of Directors, then any grants, exercises or sales that have already occurred in reliance on such increase shall be rescinded
and no additional grants, exercises or sales shall thereafter be made in reliance on such increase. 
 (c) Effect of Amendment or
Termination. No Shares shall be issued or sold under the Plan after the termination thereof, except upon exercise of an Option granted prior to such termination. The termination of the Plan, or any amendment thereof, shall not affect any Share
previously issued or any Option previously granted under the Plan. 

 SECTION 12. DEFINITIONS. 

(a) “Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time. 

(b) “Code” shall mean the Internal Revenue Code of 1986, as amended. 

(c) “Committee” shall mean a committee of the Board of Directors, as described in Section 2(a). 

(d) “Company” shall mean SI-BONE, Inc., a Delaware corporation. 

(e) “Consultant” shall mean a person who performs bona fide services for the Company, a Parent or a Subsidiary as a
consultant or advisor, excluding Employees and Outside Directors. 
 (f) “Disability” shall mean that the Optionee is
unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment. 
 (g)
“Employee” shall mean any individual who is a common-law employee of the Company, a Parent or a Subsidiary. 

(h) “Exercise Price” shall mean the amount for which one Share may be purchased upon exercise of an Option, as
specified by the Board of Directors in the applicable Stock Option Agreement. 
 (i) “Fair Market Value” shall mean
the fair market value of a Share, as determined by the Board of Directors in accordance with applicable law. Such determination shall be conclusive and binding on all persons. 

(j) “Family Member” shall mean (i) any child, stepchild, grandchild, parent, stepparent, grandparent, spouse,
former spouse, sibling, niece, nephew, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law, including adoptive relationships, (ii) any person sharing the Optionee’s household (other than a tenant or
employee), (iii) a trust in which persons described in Clause (i) or (ii) have more than 50% of the beneficial interest, (iv) a foundation in which persons described in Clause (i) or (ii) or the Optionee control the
management of assets and (v) any other entity in which persons described in Clause (i) or (ii) or the Optionee own more than 50% of the voting interests. 

(k) “ISO” shall mean an employee incentive stock option described in Section 422(b) of the Code. 

(l) “Nonstatutory Option” shall mean a stock option not described in Sections 422(b) or 423(b) of the Code. 

(m) “Option” shall mean an ISO or Nonstatutory Option granted under the Plan and entitling the holder to purchase
Shares. 

 (n) “Optionee” shall mean a person who holds an Option. 

(o) “Outside Director” shall mean a member of the Board of Directors who is not an Employee. 

(p) “Parent” shall mean any corporation (other than the Company) in an unbroken chain of corporations ending with the
Company, if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. A corporation that attains the status of a
Parent on a date after the adoption of the Plan shall be considered a Parent commencing as of such date. 
 (q)
“Plan” shall mean this SI-BONE, Inc. 2008 Stock Plan. 
 (r) “Purchase Price” shall mean the
consideration for which one Share may be acquired under the Plan (other than upon exercise of an Option), as specified by the Board of Directors. 

(s) “Purchaser” shall mean a person to whom the Board of Directors has offered the right to acquire Shares under the
Plan (other than upon exercise of an Option). 
 (t) “Service” shall mean service as an Employee, Outside Director or
Consultant. 
 (u) “Share” shall mean one share of Stock, as adjusted in accordance with Section 8 (if
applicable). 
 (v) “Stock” shall mean the Series 1 Common Stock of the Company. 

(w) “Stock Option Agreement” shall mean the agreement between the Company and an Optionee that contains the terms,
conditions and restrictions pertaining to the Optionee’s Option. 
 (x) “Stock Purchase Agreement” shall mean
the agreement between the Company and a Purchaser who acquires Shares under the Plan that contains the terms, conditions and restrictions pertaining to the acquisition of such Shares. 

(y) “Subsidiary” shall mean any corporation (other than the Company) in an unbroken chain of corporations beginning
with the Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. A
corporation that attains the status of a Subsidiary on a date after the adoption of the Plan shall be considered a Subsidiary commencing as of such date. 

 SI-BONE, INC. 2008 STOCK PLAN 

NOTICE OF STOCK OPTION GRANT 

The Optionee has been granted the following option to purchase shares of the Series 1 Common Stock of SI-BONE, Inc.: 

 

			
	 Name of Optionee:
	  	«Name»
		
	 Total Number of Shares:
	  	«TotalShares»
		
	 Type of Option:
	  	«ISO» Incentive Stock Option (ISO)
		
		  	«NSO» Nonstatutory Stock Option (NSO)
		
	 Exercise Price per Share:
	  	$«PricePerShare»
		
	 Date of Grant:
	  	«DateGrant»
		
	 Date Exercisable:
	  	«VestSchedule»
		
	 Vesting Commencement Date:
	  	«VestComDate»
		
	 Expiration Date:
	  	«ExpDate». This option expires earlier if the Optionee’s Service terminates earlier, as provided in Section 6 of the Stock Option Agreement.

 By signing below, the Optionee and the Company agree that this option is granted under, and governed by the terms and
conditions of, the 2008 Stock Plan and the Stock Option Agreement. Both of these documents are attached to, and made a part of, this Notice of Stock Option Grant. Section 13 of the Stock Option Agreement includes important acknowledgements
of the Optionee. 
  

									
	OPTIONEE:	 		  		  	SI-BONE, Inc.
				
	  
	  		  	By:	  	  

		 		  		  	Title:	  	  

 THE OPTION GRANTED PURSUANT TO THIS AGREEMENT AND THE SHARES ISSUABLE UPON THE EXERCISE THEREOF HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT
SUCH REGISTRATION IS NOT REQUIRED. 
 SI-BONE, INC. 2008 STOCK PLAN: 

STOCK OPTION AGREEMENT 

SECTION 1. GRANT OF OPTION. 
 (a)
Option. On the terms and conditions set forth in the Notice of Stock Option Grant and this Agreement, the Company grants to the Optionee on the Date of Grant the option to purchase at the Exercise Price the number of Shares set forth in the
Notice of Stock Option Grant. The Exercise Price is agreed to be at least 100% of the Fair Market Value per Share on the Date of Grant (110% of Fair Market Value if this option is designated as an ISO in the Notice of Stock Option Grant and
Section 3(b) of the Plan applies). This option is intended to be an ISO or an NSO, as provided in the Notice of Stock Option Grant. 

(b) $100,000 Limitation. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it shall be deemed to be an
NSO to the extent (and only to the extent) required by the $100,000 annual limitation under Section 422(d) of the Code. 
 (c) Stock
Plan and Defined Terms. This option is granted pursuant to the Plan, a copy of which the Optionee acknowledges having received. The provisions of the Plan are incorporated into this Agreement by this reference. Capitalized terms are defined in
Section 14 of this Agreement. 
 SECTION 2. RIGHT TO EXERCISE. 

(a) Exercisability. Subject to Subsection (b) below and the other conditions set forth in this Agreement, all or part of this
option may be exercised prior to its expiration at the time or times set forth in the Notice of Stock Option Grant. In addition, this option shall become exercisable in full if Section 8(b)(iv) of the Plan applies. 

(b) Stockholder Approval. Any other provision of this Agreement notwithstanding, no portion of this option shall be exercisable at any
time prior to the approval of the Plan by the Company’s stockholders. 

 SECTION 3. NO TRANSFER OR ASSIGNMENT OF OPTION. 

Except as otherwise provided in this Agreement, this option and the rights and privileges conferred hereby shall not be sold, pledged or
otherwise transferred (whether by operation of law or otherwise) and shall not be subject to sale under execution, attachment, levy or similar process. 

SECTION 4. EXERCISE PROCEDURES. 
 (a)
Notice of Exercise. The Optionee or the Optionee’s representative may exercise this option by giving written notice to the Company pursuant to Section 12(c). The notice shall specify the election to exercise this option, the number of
Shares for which it is being exercised and the form of payment. The person exercising this option shall sign the notice. In the event that this option is being exercised by the representative of the Optionee, the notice shall be accompanied by proof
(satisfactory to the Company) of the representative’s right to exercise this option. The Optionee or the Optionee’s representative shall deliver to the Company, at the time of giving the notice, payment in a form permissible under
Section 5 for the full amount of the Purchase Price. 
 (b) Issuance of Shares. After receiving a proper notice of exercise, the
Company shall cause to be issued one or more certificates evidencing the Shares for which this option has been exercised. Such Shares shall be registered (i) in the name of the person exercising this option, (ii) in the names of such
person and his or her spouse as community property or as joint tenants with the right of survivorship or (iii) with the Company’s consent, in the name of a revocable trust. The Company shall cause such certificates to be delivered to or
upon the order of the person exercising this option. 
 (c) Withholding Taxes. In the event that the Company determines that it is
required to withhold any tax as a result of the exercise of this option, the Optionee, as a condition to the exercise of this option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding requirements. The
Optionee shall also make arrangements satisfactory to the Company to enable it to satisfy any withholding requirements that may arise in connection with the disposition of Shares purchased by exercising this option. 

SECTION 5. PAYMENT FOR STOCK. 
 (a)
Cash. All or part of the Purchase Price may be paid in cash or cash equivalents. 
 (b) Surrender of Stock. At the discretion of
the Board of Directors, all or any part of the Purchase Price may be paid by surrendering, or attesting to the ownership of, Shares that are already owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer and
shall be valued at their Fair Market Value as of the date when this option is exercised. 

 (c) Exercise/Sale. All or part of the Purchase Price and any withholding taxes may be
paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver all or part of the sales proceeds to the Company. However, payment pursuant to this
Subsection (c) shall be permitted only if (i) Stock then is publicly traded and (ii) such payment does not violate applicable law. 

SECTION 6. TERM AND EXPIRATION. 
 (a)
Basic Term. This option shall in any event expire on the expiration date set forth in the Notice of Stock Option Grant, which date is 10 years after the Date of Grant (five years after the Date of Grant if this option is designated as an ISO in
the Notice of Stock Option Grant and Section 3(b) of the Plan applies). 
 (b) Termination of Service (Except by Death). If the
Optionee’s Service terminates for any reason other than death, then this option shall expire on the earliest of the following occasions: 

(i) The expiration date determined pursuant to Subsection (a) above; 

(ii) The date three months after the termination of the Optionee’s Service for any reason other than Disability; or 

(iii) The date six months after the termination of the Optionee’s Service by reason of Disability. 

The Optionee may exercise all or part of this option at any time before its expiration under the preceding sentence, but only to the extent that this option
had become exercisable before the Optionee’s Service terminated. When the Optionee’s Service terminates, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable. In the event
that the Optionee dies after termination of Service but before the expiration of this option, all or part of this option may be exercised (prior to expiration) by the executors or administrators of the Optionee’s estate or by any person who has
acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s Service terminated. 

(c) Death of the Optionee. If the Optionee dies while in Service, then this option shall expire on the earlier of the following dates:

 (i) The expiration date determined pursuant to Subsection (a) above; or 

(ii) The date 12 months after the Optionee’s death. 

All or part of this option may be exercised at any time before its expiration under the preceding sentence by the executors or administrators of the
Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s death. When
the Optionee dies, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable. 

 (d) Part-Time Employment and Leaves of Absence. If the Optionee commences working on
a part-time basis, then the Company may adjust the vesting schedule set forth in the Notice of Stock Option Grant in accordance with the Company’s part-time work policy or the terms of an agreement between the Optionee and the Company
pertaining to his or her part-time schedule. If the Optionee goes on a leave of absence, then the Company may adjust the vesting schedule set forth in the Notice of Stock Option Grant in accordance with the Company’s leave of absence policy or
the terms of such leave. Except as provided in the preceding sentence, Service shall be deemed to continue for any purpose under this Agreement while the Optionee is on a bona fide leave of absence, if (i) such leave was approved
by the Company in writing and (ii) continued crediting of Service for such purpose is expressly required by the terms of such leave or by applicable law (as determined by the Company). Service shall be deemed to terminate when such leave ends,
unless the Optionee immediately returns to active work. 
 (e) Notice Concerning ISO Treatment. Even if this option is designated as
an ISO in the Notice of Stock Option Grant, it ceases to qualify for favorable tax treatment as an ISO to the extent that it is exercised: 

(i) More than three months after the date when the Optionee ceases to be an Employee for any reason other than death or
permanent and total disability (as defined in Section 22(e)(3) of the Code); 
 (ii) More than 12 months after the date
when the Optionee ceases to be an Employee by reason of permanent and total disability (as defined in Section 22(e)(3) of the Code); or 

(iii) More than three months after the date when the Optionee has been on a leave of absence for 90 days, unless the
Optionee’s reemployment rights following such leave were guaranteed by statute or by contract. 
 SECTION 7. RIGHT OF FIRST REFUSAL. 

(a) Right of First Refusal. In the event that the Optionee proposes to sell, pledge or otherwise transfer to a third party any Shares
acquired under this Agreement, or any interest in such Shares, the Company shall have the Right of First Refusal with respect to all (and not less than all) of such Shares. If the Optionee desires to transfer Shares acquired under this Agreement,
the Optionee shall give a written Transfer Notice to the Company describing fully the proposed transfer, including the number of Shares proposed to be transferred, the proposed transfer price, the name and address of the proposed Transferee and
proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal, State or foreign securities laws. The Transfer Notice shall be signed both by the Optionee and by the proposed Transferee and must
constitute a binding commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all, and not less than all, of the Shares on the terms of the proposal described in the Transfer Notice (subject, however, to
any change in such terms permitted under Subsection (b) below) by delivery of a notice of exercise of the Right of First Refusal within 30 days after the date when the Transfer Notice was received by the Company. 

 (b) Transfer of Shares. If the Company fails to exercise its Right of First Refusal
within 30 days after the date when it received the Transfer Notice, the Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a transfer of the Shares subject to the Transfer Notice on the
terms and conditions described in the Transfer Notice, provided that any such sale is made in compliance with applicable federal, State and foreign securities laws and not in violation of any other contractual restrictions to which the Optionee is
bound. Any proposed transfer on terms and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be subject to the Right of First Refusal and shall require
compliance with the procedure described in Subsection (a) above. If the Company exercises its Right of First Refusal, the parties shall consummate the sale of the Shares on the terms set forth in the Transfer Notice within 60 days after
the date when the Company received the Transfer Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice provided that payment for the Shares was to be made in
a form other than cash or cash equivalents paid at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of the consideration described in the Transfer Notice. 

(c) Additional or Exchanged Securities and Property. In the event of a merger or consolidation of the Company with or into another
entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in
conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents) that are by reason of such transaction exchanged for, or
distributed with respect to, any Shares subject to this Section 7 shall immediately be subject to the Right of First Refusal. Appropriate adjustments to reflect the exchange or distribution of such securities or property shall be made to the
number and/or class of the Shares subject to this Section 7. 
 (d) Termination of Right of First Refusal. Any other provision of
this Section 7 notwithstanding, in the event that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company shall have no Right of First Refusal, and the Optionee shall have no
obligation to comply with the procedures prescribed by Subsections (a) and (b) above. 
 (e) Permitted Transfers. This
Section 7 shall not apply to (i) a transfer by beneficiary designation, will or intestate succession or (ii) a transfer to one or more members of the Optionee’s Immediate Family or to a trust established by the Optionee for the
benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of this Agreement. If the
Optionee transfers any Shares acquired under this Agreement, either under this Subsection (e) or after the Company has failed to exercise the Right of First Refusal, then this Agreement shall apply to the Transferee to the same extent as to the
Optionee. 

 (f) Termination of Rights as Stockholder. If the Company makes available, at the time
and place and in the amount and form provided in this Agreement, the consideration for the Shares to be purchased in accordance with this Section 7, then after such time the person from whom such Shares are to be purchased shall no longer have
any rights as a holder of such Shares (other than the right to receive payment of such consideration in accordance with this Agreement). Such Shares shall be deemed to have been purchased in accordance with the applicable provisions hereof, whether
or not the certificate(s) therefor have been delivered as required by this Agreement. 
 (g) Assignment of Right of First Refusal. The
Board of Directors may freely assign the Company’s Right of First Refusal, in whole or in part. Any person who accepts an assignment of the Right of First Refusal from the Company shall assume all of the Company’s rights and obligations
under this Section 7. 
 SECTION 8. LEGALITY OF INITIAL ISSUANCE. 

No Shares shall be issued upon the exercise of this option unless and until the Company has determined that: 

a. It and the Optionee have taken any actions required to register the Shares under the Securities Act or to perfect an
exemption from the registration requirements thereof; 
 b. Any applicable listing requirement of any stock exchange or other
securities market on which Stock is listed has been satisfied; and 
 c. Any other applicable provision of federal, State or
foreign law has been satisfied. 
 SECTION 9. NO REGISTRATION RIGHTS. 

The Company may, but shall not be obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable law.
The Company shall not be obligated to take any affirmative action in order to cause the sale of Shares under this Agreement to comply with any law. 

SECTION 10. RESTRICTIONS ON TRANSFER OF SHARES. 

(a) Securities Law Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been registered under the
Securities Act or have been registered or qualified under the securities laws of any State, the Company at its discretion may impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of appropriate legends
on stock certificates or the imposition of stop-transfer instructions) if, in the judgment of the Company, such restrictions are necessary or desirable in order to achieve compliance with the Securities Act,
the securities laws of any State or any other law. 

 (b) Market Stand-Off. In connection with any underwritten public offering by the
Company of its equity securities pursuant to an effective registration statement filed under the Securities Act, including the Company’s initial public offering, the Optionee or a Transferee shall not directly or indirectly sell, make any short
sale of, loan, hypothecate, pledge, offer, grant or sell any option or other contract for the purchase of, purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or agree to engage in any of the foregoing
transactions with respect to, any Shares acquired under this Agreement without the prior written consent of the Company or its managing underwriter. Such restriction (the “Market Stand-Off”) shall be in effect for such period of time
following the date of the final prospectus for the offering as may be requested by the Company or such underwriter. In no event, however, shall such period exceed 180 days plus such additional period as may reasonably be requested by the Company or
such underwriter to accommodate regulatory restrictions on (i) the publication or other distribution of research reports or (ii) analyst recommendations and opinions, including (without limitation) the restrictions set forth in
Rule 2711(f)(4) of the National Association of Securities Dealers and Rule 472(f)(4) of the New York Stock Exchange, as amended, or any similar successor rules. The Market Stand-Off shall in any event terminate two years after the date of
the Company’s initial public offering. In the event of the declaration of a stock dividend, a spin-off, a stock split, an adjustment in conversion ratio, a recapitalization or a similar transaction
affecting the Company’s outstanding securities without receipt of consideration, any new, substituted or additional securities which are by reason of such transaction distributed with respect to any Shares subject to the Market Stand-Off, or
into which such Shares thereby become convertible, shall immediately be subject to the Market Stand-Off. In order to enforce the Market Stand-Off, the Company may impose stop-transfer instructions with respect to the Shares acquired under this
Agreement until the end of the applicable stand-off period. The Company’s underwriters shall be beneficiaries of the agreement set forth in this Subsection (b). This Subsection (b) shall not apply to Shares registered in the public
offering under the Securities Act. 
 (c) Investment Intent at Grant. The Optionee represents and agrees that the Shares to be
acquired upon exercising this option will be acquired for investment, and not with a view to the sale or distribution thereof. 
 (d)
Investment Intent at Exercise. In the event that the sale of Shares under the Plan is not registered under the Securities Act but an exemption is available that requires an investment representation or other representation, the Optionee shall
represent and agree at the time of exercise that the Shares being acquired upon exercising this option are being acquired for investment, and not with a view to the sale or distribution thereof, and shall make such other representations as are
deemed necessary or appropriate by the Company and its counsel. 
 (e) Legends. All certificates evidencing Shares purchased under
this Agreement shall bear the following legend: 

 “THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR IN
ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY CERTAIN RIGHTS OF
FIRST REFUSAL UPON AN ATTEMPTED TRANSFER OF THE SHARES. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE.” 

All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear the following legend (and such other restrictive
legends as are required or deemed advisable under the provisions of any applicable law): 
 “THE SHARES REPRESENTED HEREBY HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT SUCH
REGISTRATION IS NOT REQUIRED.” 
 (f) Removal of Legends. If, in the opinion of the Company and its counsel, any legend placed on
a stock certificate representing Shares sold under this Agreement is no longer required, the holder of such certificate shall be entitled to exchange such certificate for a certificate representing the same number of Shares but without such legend.

 (g) Administration. Any determination by the Company and its counsel in connection with any of the matters set forth in this
Section 10 shall be conclusive and binding on the Optionee and all other persons. 
 SECTION 11. ADJUSTMENT OF SHARES. 

In the event of any transaction described in Section 8(a) of the Plan, the terms of this option (including, without limitation, the number
and kind of Shares subject to this option and the Exercise Price) shall be adjusted as set forth in Section 8(a) of the Plan. In the event that the Company is a party to a merger or consolidation, this option shall be subject to the agreement
of merger or consolidation, as provided in Section 8(b) of the Plan. 
 SECTION 12. MISCELLANEOUS PROVISIONS. 

(a) Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder with
respect to any Shares subject to this option until the Optionee or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Purchase Price pursuant to Sections 4 and 5. 

 (b) No Retention Rights. Nothing in this option or in the Plan shall confer upon the
Optionee any right to continue in Service for any period of specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which
rights are hereby expressly reserved by each, to terminate his or her Service at any time and for any reason, with or without cause. 

(c) Notice. Any notice required by the terms of this Agreement shall be given in writing. It shall be deemed effective upon
(i) personal delivery, (ii) deposit with the United States Postal Service, by registered or certified mail, with postage and fees prepaid or (iii) deposit with Federal Express Corporation, with shipping charges prepaid. Notice shall
be addressed to the Company at its principal executive office and to the Optionee at the address that he or she most recently provided to the Company in accordance with this Subsection (c). 

(d) Entire Agreement. The Notice of Stock Option Grant, this Agreement and the Plan constitute the entire contract between the parties
hereto with regard to the subject matter hereof. They supersede any other agreements, representations or understandings (whether oral or written and whether express or implied) that relate to the subject matter hereof. 

(e) Choice of Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware, as such
laws are applied to contracts entered into and performed in such State. 
 (f) [Plan Discretionary. The Optionee understands and
acknowledges that (i) the Plan is entirely discretionary, (ii) the Company and the Optionee’s employer have reserved the right to amend, suspend or terminate the Plan at any time, (iii) the grant of an option does not in any way
create any contractual or other right to receive additional grants of options (or benefits in lieu of options) at any time or in any amount and (iv) all determinations with respect to any additional grants, including (without limitation) the
times when options will be granted, the number of Shares offered, the Exercise Price and the vesting schedule, will be at the sole discretion of the Company. 

(g) Extraordinary Compensation. The value of this option shall be an extraordinary item of compensation outside the scope of the
Optionee’s employment contract, if any, and shall not be considered a part of his or her normal or expected compensation for purposes of calculating severance, resignation, redundancy or end-of-service payments, bonuses, long-service awards,
pension or retirement benefits or similar payments. 
 (h) Termination of Service. The Optionee understands and acknowledges that
participation in the Plan ceases upon termination of his or her Service for any reason, except as may explicitly be provided otherwise in the Plan or this Agreement. 

(i) Authorization to Disclose. The Optionee hereby authorizes and directs the Optionee’s employer to disclose to the Company or any
Subsidiary any information regarding the Optionee’s employment, the nature and amount of the Optionee’s compensation and the fact and conditions of the Optionee’s participation in the Plan, as the Optionee’s employer deems
necessary or appropriate to facilitate the administration of the Plan. 
 (j) Personal Data Authorization. The Optionee consents to
the collection, use and transfer of personal data as described in this Subsection (j). The Optionee understands and acknowledges that the Company, the Optionee’s employer and the Company’s other Subsidiaries hold certain personal
information regarding the Optionee for the purpose of managing and administering the Plan, including (without limitation) the Optionee’s name, home address, telephone number, date of birth, social insurance number, salary, nationality, job
title, any Shares or directorships held in the Company and details of all options or any other entitlements to Shares awarded, canceled, exercised, vested, unvested or outstanding in the Optionee’s favor (the “Data”). The Optionee
further understands and acknowledges that the Company and/or its Subsidiaries will transfer Data among themselves as necessary for the purpose of implementation, administration and management of the Optionee’s participation in the Plan and that
the Company and/or any Subsidiary may each further transfer Data to any third party assisting the Company in the implementation, administration and management of the Plan. The Optionee understands and acknowledges that the recipients of Data may be
located in the United States or elsewhere. The Optionee authorizes such recipients to receive, possess, use, retain and transfer Data, in electronic or other form, for the purpose of administering the Optionee’s participation in the Plan,
including a transfer to any broker or other third party with whom the Optionee elects to deposit Shares acquired under the Plan of such Data as may be required for the administration of the Plan and/or the subsequent holding of Shares on the
Optionee’s behalf. The Optionee may, at any time, view the Data, require any necessary modifications of Data or withdraw the consents set forth in this Subsection (j) by contacting the Human Resources Department of the Company in writing.]

 SECTION 13. ACKNOWLEDGEMENTS OF THE OPTIONEE. 

(a) Tax Consequences. The Optionee agrees that the Company does not have a duty to design or administer the Plan or its other
compensation programs in a manner that minimizes the Optionee’s tax liabilities. The Optionee shall not make any claim against the Company or its Board of Directors, officers or employees related to tax liabilities arising from this option or
the Optionee’s other compensation. In particular, the Optionee acknowledges that this option is exempt from Section 409A of the Code only if the Exercise Price is at least equal to the Fair Market Value per Share on the Date of Grant.
Since Shares are not traded on an established securities market, the determination of their Fair Market Value is made by the Board of Directors or by an independent valuation firm retained by the Company. The Optionee acknowledges that there is no
guarantee in either case that the Internal Revenue Service will agree with the valuation, and the Optionee shall not make any claim against the Company or its Board of Directors, officers or employees in the event that the Internal Revenue Service
asserts that the valuation was too low. 
 (b) Electronic Delivery of Documents. The Optionee agrees that the Company may deliver by
email all documents relating to the Plan or this option (including, without limitation, a copy of the Plan) and all other documents that the Company is required to deliver to its security holders (including, without limitation, disclosures that may
be required by the Securities and Exchange Commission). The Optionee also agrees that the Company may deliver these documents by posting them on a website maintained by the Company or by a third party under contract with the Company. If the Company
posts these documents on a website, it shall notify the Optionee by email. 

 SECTION 14. DEFINITIONS. 

(a) “Agreement” shall mean this Stock Option Agreement. 

(b) “Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time or, if a Committee
has been appointed, such Committee. 
 (c) “Code” shall mean the Internal Revenue Code of 1986, as amended. 

(d) “Committee” shall mean a committee of the Board of Directors, as described in Section 2 of the Plan. 

(e) “Company” shall mean SI-BONE, Inc., a Delaware corporation. 

(f) “Consultant” shall mean a person who performs bona fide services for the Company, a Parent or a Subsidiary as a consultant
or advisor, excluding Employees and Outside Directors. 
 (g) “Date of Grant” shall mean the date of grant specified in the
Notice of Stock Option Grant, which date shall be the later of (i) the date on which the Board of Directors resolved to grant this option or (ii) the first day of the Optionee’s Service. 

(h) “Disability” shall mean that the Optionee is unable to engage in any substantial gainful activity by reason of any
medically determinable physical or mental impairment. 
 (i) “Employee” shall mean any individual who is a common-law employee of the Company, a Parent or a Subsidiary. 
 (j) “Exercise Price”
shall mean the amount for which one Share may be purchased upon exercise of this option, as specified in the Notice of Stock Option Grant. 

(k) “Fair Market Value” shall mean the fair market value of a Share, as determined by the Board of Directors in good faith.
Such determination shall be conclusive and binding on all persons. 
 (l) “Immediate Family” shall mean any child,
stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law and shall include adoptive relationships. 

(m) “ISO” shall mean an employee incentive stock option described in Section 422(b) of the Code. 

 (n) “Notice of Stock Option Grant” shall mean the document so entitled to
which this Agreement is attached. 
 (o) “NSO” shall mean a stock option not described in Sections 422(b) or 423(b) of
the Code. 
 (p) “Optionee” shall mean the person named in the Notice of Stock Option Grant. 

(q) “Outside Director” shall mean a member of the Board of Directors who is not an Employee. 

(r) “Parent” shall mean any corporation (other than the Company) in an unbroken chain of corporations ending with the Company,
if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(s) “Plan” shall mean the SI-BONE, Inc. 2008 Stock Plan, as in effect on the Date of Grant. 

(t) “Purchase Price” shall mean the Exercise Price multiplied by the number of Shares with respect to which this option is
being exercised. 
 (u) “Right of First Refusal” shall mean the Company’s right of first refusal described in
Section 7. 
 (v) “Securities Act” shall mean the Securities Act of 1933, as amended. 

(w) “Service” shall mean service as an Employee, Outside Director or Consultant. 

(x) “Share” shall mean one share of Stock, as adjusted in accordance with Section 8 of the Plan (if applicable). 

(y) “Stock” shall mean the Series 1 Common Stock of the Company. 

(z) “Subsidiary” shall mean any corporation (other than the Company) in an unbroken chain of corporations beginning with the
Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(aa) “Transferee” shall mean any person to whom the Optionee has directly or indirectly transferred any Share acquired under
this Agreement. 
 (bb) “Transfer Notice” shall mean the notice of a proposed transfer of Shares described in
Section 7. 

 SI-BONE, INC. 2008 STOCK PLAN 

NOTICE OF STOCK OPTION EXERCISE 

You must sign this Notice on Page 3 before submitting it to the Company. 

OPTIONEE INFORMATION: 
  

									
	Name:	  	  
	  		  	Social Security Number:	  	  

					
	Address:	  	  
	  		  	Employee Number:	  	  

					
		  	  
	  		  		  	

 OPTION INFORMATION: 

 

			
	Date of Grant: _____________ ___, 20__	  	Type of Stock Option:
		
	Exercise Price per Share: $             	  	☐ Nonstatutory (NSO)
		
	Total number of shares of Series 1 Common Stock of SI-BONE, Inc. (the “Company”) covered by the option:             	  	☐ Incentive (ISO)

 ____________________ 

EXERCISE INFORMATION: 

Number of shares of Series 1 Common Stock of the Company for which the option is being exercised now:
            . (These shares are referred to below as the “Purchased Shares.”) 
 Total
Exercise Price for the Purchased Shares: $             
 Form of payment enclosed
[check all that apply]: 
  

	☐	 Check for $            , payable to “SI-BONE,
Inc.” 

  

	☐	 Certificate(s) for             shares of Series 1
Common Stock of the Company. These shares will be valued as of the date this notice is received by the Company. [Requires Company consent.] 

  

	☐	 Attestation Form covering             shares of
Series 1 Common Stock of the Company. These shares will be valued as of the date this notice is received by the Company. [Requires Company consent.] 

Name(s) in which the Purchased Shares should be registered [please review the attached explanation of the available forms of ownership, and then check
one box]: 
  

					
	☐    	 	In my name only	  	
			
	☐	 	In the names of my spouse and myself as community property	  	My spouse’s name (if applicable):
			
	☐	 	In the names of my spouse and myself as community property with the right of survivorship	  	  

							
	☐	 	In the names of my spouse and myself as joint tenants with the right of survivorship	  		  	
				
	☐	 	In the name of an eligible revocable trust [requires Stock Transfer Agreement]	  		  	 Full legal name of revocable trust:
  

 
  

		
	The certificate for the Purchased Shares should be sent to the following address:	  	  
  

 
  

 REPRESENTATIONS AND ACKNOWLEDGMENTS OF THE
OPTIONEE: 
 SECTION 1. I REPRESENT AND WARRANT TO THE COMPANY THAT I AM ACQUIRING AND WILL HOLD
THE PURCHASED SHARES FOR INVESTMENT FOR MY ACCOUNT ONLY, AND NOT WITH A VIEW TO, OR FOR RESALE IN CONNECTION WITH, ANY “DISTRIBUTION” OF THE PURCHASED SHARES WITHIN THE MEANING OF THE SECURITIES ACT OF 1933, AS AMENDED (THE
“SECURITIES ACT”). 
 SECTION 2. I UNDERSTAND THAT THE PURCHASED SHARES HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT BY REASON OF A SPECIFIC EXEMPTION THEREFROM AND THAT THE PURCHASED SHARES MUST BE HELD INDEFINITELY, UNLESS THEY ARE SUBSEQUENTLY REGISTERED UNDER THE SECURITIES ACT OR I OBTAIN AN OPINION OF COUNSEL (IN FORM AND SUBSTANCE
SATISFACTORY TO THE COMPANY AND ITS COUNSEL) THAT REGISTRATION IS NOT REQUIRED. 
 SECTION 3. I ACKNOWLEDGE THAT THE
COMPANY IS UNDER NO OBLIGATION TO REGISTER THE PURCHASED SHARES. 
 SECTION 4. I AM AWARE OF THE ADOPTION OF RULE
144 BY THE SECURITIES AND EXCHANGE COMMISSION UNDER THE SECURITIES ACT, WHICH PERMITS LIMITED PUBLIC RESALES OF SECURITIES ACQUIRED IN A NON-PUBLIC OFFERING, SUBJECT TO THE SATISFACTION OF CERTAIN CONDITIONS. THESE CONDITIONS INCLUDE (WITHOUT
LIMITATION) THAT CERTAIN CURRENT PUBLIC INFORMATION ABOUT THE ISSUER IS AVAILABLE, THAT THE RESALE OCCURS ONLY AFTER THE HOLDING PERIOD REQUIRED BY RULE 144 HAS BEEN SATISFIED, THAT THE SALE OCCURS THROUGH AN UNSOLICITED “BROKER’S
TRANSACTION” AND THAT THE AMOUNT OF SECURITIES BEING SOLD DURING ANY THREE-MONTH PERIOD DOES NOT EXCEED SPECIFIED LIMITATIONS. I UNDERSTAND THAT THE CONDITIONS FOR RESALE SET FORTH IN RULE 144 HAVE NOT BEEN SATISFIED AND THAT THE COMPANY
HAS NO PLANS TO SATISFY THESE CONDITIONS IN THE FORESEEABLE FUTURE. 
 SECTION 5. I WILL NOT SELL, TRANSFER OR
OTHERWISE DISPOSE OF THE PURCHASED SHARES IN VIOLATION OF THE SECURITIES ACT, THE SECURITIES EXCHANGE ACT OF 1934, OR THE RULES PROMULGATED THEREUNDER, INCLUDING RULE 144 UNDER THE SECURITIES ACT. 

 SECTION 6. I ACKNOWLEDGE THAT I HAVE RECEIVED AND HAD ACCESS TO SUCH
INFORMATION AS I CONSIDER NECESSARY OR APPROPRIATE FOR DECIDING WHETHER TO INVEST IN THE PURCHASED SHARES AND THAT I HAD AN OPPORTUNITY TO ASK QUESTIONS AND RECEIVE ANSWERS FROM THE COMPANY REGARDING THE TERMS AND CONDITIONS OF THE ISSUANCE OF THE
PURCHASED SHARES. 
 SECTION 7. I AM AWARE THAT MY INVESTMENT IN THE COMPANY IS A SPECULATIVE INVESTMENT THAT HAS
LIMITED LIQUIDITY AND IS SUBJECT TO THE RISK OF COMPLETE LOSS. I AM ABLE, WITHOUT IMPAIRING MY FINANCIAL CONDITION, TO HOLD THE PURCHASED SHARES FOR AN INDEFINITE PERIOD AND TO SUFFER A COMPLETE LOSS OF MY INVESTMENT IN THE PURCHASED SHARES. 

SECTION 8. I ACKNOWLEDGE THAT THE PURCHASED SHARES REMAIN SUBJECT TO THE COMPANY’S RIGHT OF FIRST REFUSAL AND THE
MARKET STAND-OFF (SOMETIMES REFERRED TO AS THE “LOCK-UP”), ALL IN ACCORDANCE WITH THE APPLICABLE NOTICE OF STOCK OPTION GRANT AND STOCK OPTION AGREEMENT. 

SECTION 9. I ACKNOWLEDGE THAT I AM ACQUIRING THE PURCHASED SHARES SUBJECT TO ALL OTHER TERMS OF THE NOTICE OF STOCK
OPTION GRANT AND STOCK OPTION AGREEMENT. 
 SECTION 10. I ACKNOWLEDGE THAT I HAVE RECEIVED A COPY OF THE
COMPANY’S EXPLANATION OF THE FORMS OF OWNERSHIP AVAILABLE FOR MY PURCHASED SHARES. I ACKNOWLEDGE THAT THE COMPANY HAS ENCOURAGED ME TO CONSULT MY OWN ADVISER TO DETERMINE THE FORM OF OWNERSHIP THAT IS APPROPRIATE FOR ME. IN THE EVENT THAT I
CHOOSE TO TRANSFER MY PURCHASED SHARES TO A TRUST, I AGREE TO SIGN A STOCK TRANSFER AGREEMENT. IN THE EVENT THAT I CHOOSE TO TRANSFER MY PURCHASED SHARES TO A TRUST THAT DOES NOT SATISFY THE REQUIREMENTS DESCRIBED IN THE ATTACHED EXPLANATION (I.E.,
A TRUST THAT IS NOT AN ELIGIBLE REVOCABLE TRUST), I ALSO ACKNOWLEDGE THAT THE TRANSFER WILL BE TREATED AS A “DISPOSITION” FOR TAX PURPOSES. AS A RESULT, THE FAVORABLE ISO TAX TREATMENT WILL BE UNAVAILABLE AND OTHER UNFAVORABLE TAX
CONSEQUENCES MAY OCCUR. 
 SECTION 11. I ACKNOWLEDGE THAT I HAVE RECEIVED A COPY OF THE COMPANY’S EXPLANATION
OF THE FEDERAL INCOME TAX CONSEQUENCES OF AN OPTION EXERCISE. I ACKNOWLEDGE THAT THE COMPANY HAS ENCOURAGED ME TO CONSULT MY OWN ADVISER TO DETERMINE THE TAX CONSEQUENCES OF ACQUIRING THE PURCHASED SHARES AT THIS TIME. 

SECTION 12. I AGREE THAT THE COMPANY DOES NOT HAVE A DUTY TO DESIGN OR ADMINISTER THE 2008 STOCK PLAN OR ITS OTHER
COMPENSATION PROGRAMS IN A MANNER THAT MINIMIZES MY TAX LIABILITIES. I WILL NOT MAKE ANY CLAIM AGAINST THE COMPANY OR ITS BOARD OF DIRECTORS, OFFICERS OR EMPLOYEES RELATED TO TAX LIABILITIES ARISING FROM MY OPTIONS OR MY OTHER COMPENSATION. IN
PARTICULAR, I ACKNOWLEDGE THAT MY OPTIONS ARE EXEMPT FROM SECTION 409A OF THE INTERNAL REVENUE CODE ONLY IF THE EXERCISE PRICE PER SHARE IS AT LEAST EQUAL TO THE FAIR MARKET 

 
VALUE PER SHARE OF THE COMPANY’S SERIES 1 COMMON STOCK AT THE TIME THE OPTION WAS GRANTED BY THE COMPANY’S BOARD OF DIRECTORS. SINCE SHARES OF THE COMPANY’S SERIES 1 COMMON STOCK
ARE NOT TRADED ON AN ESTABLISHED SECURITIES MARKET, THE DETERMINATION OF THEIR FAIR MARKET VALUE WAS MADE BY THE COMPANY’S BOARD OF DIRECTORS OR BY AN INDEPENDENT VALUATION FIRM RETAINED BY THE COMPANY. I ACKNOWLEDGE THAT THERE IS NO GUARANTEE
IN EITHER CASE THAT THE INTERNAL REVENUE SERVICE WILL AGREE WITH THE VALUATION, AND I WILL NOT MAKE ANY CLAIM AGAINST THE COMPANY OR ITS BOARD OF DIRECTORS, OFFICERS OR EMPLOYEES IN THE EVENT THAT THE INTERNAL REVENUE SERVICE ASSERTS THAT THE
VALUATION WAS TOO LOW. 
 SECTION 13. I AGREE TO SEEK THE CONSENT OF MY SPOUSE TO THE EXTENT REQUIRED BY THE COMPANY
TO ENFORCE THE FOREGOING. 
  

			
	SIGNATURE:	  	DATE:
		
	  
	  	                                

 SI-BONE, INC. 2008 STOCK PLAN 

NOTICE OF STOCK OPTION GRANT (EARLY
EXERCISE) 
 The Optionee has been granted the following option to purchase shares of the Series 1 Common Stock of SI-BONE, Inc.: 

 

			
	Name of Optionee:	  	«Name»
		
	Total Number of Shares:	  	«TotalShares»
		
	Type of Option:	  	«ISO» Incentive Stock Option (ISO)
		
		  	«NSO» Nonstatutory Stock Option (NSO)
		
	Exercise Price per Share:	  	$«PricePerShare»
		
	Date of Grant:	  	«DateGrant»
		
	Date Exercisable:	  	This option may be exercised at any time after the Date of Grant for all or any part of the Shares subject to this option.
		
	Vesting Commencement Date:	  	«VestComDate»
		
	Vesting Schedule:	  	«VestSchedule»
		
	Expiration Date:	  	«ExpDate». This option expires earlier if the Optionee’s Service terminates earlier, as provided in Section 6 of the Stock Option Agreement.

 By signing below, the Optionee and the Company agree that this option is granted under, and governed by the terms and
conditions of, the 2008 Stock Plan and the Stock Option Agreement. Both of these documents are attached to, and made a part of, this Notice of Stock Option Grant. Section 14 of the Stock Option Agreement includes important acknowledgements
of the Optionee. 
  

							
	OPTIONEE:	 		 	SI-BONE, INC.
				
	  
	 		 	By:	 	 
		 		 	Title:	 	 

  

 THE OPTION GRANTED PURSUANT TO THIS AGREEMENT AND THE SHARES ISSUABLE UPON THE EXERCISE THEREOF HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT
SUCH REGISTRATION IS NOT REQUIRED. 
 SI-BONE, INC. 2008 STOCK PLAN: 

STOCK OPTION AGREEMENT 

SECTION 1. GRANT OF OPTION. 
 (a)
Option. On the terms and conditions set forth in the Notice of Stock Option Grant and this Agreement, the Company grants to the Optionee on the Date of Grant the option to purchase at the Exercise Price the number of Shares set forth in the
Notice of Stock Option Grant. The Exercise Price is agreed to be at least 100% of the Fair Market Value per Share on the Date of Grant (110% of Fair Market Value if this option is designated as an ISO in the Notice of Stock Option Grant and
Section 3(b) of the Plan applies). This option is intended to be an ISO or an NSO, as provided in the Notice of Stock Option Grant. 

(b) $100,000 Limitation. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it shall be deemed to be an
NSO to the extent (and only to the extent) required by the $100,000 annual limitation under Section 422(d) of the Code. 
 (c) Stock
Plan and Defined Terms. This option is granted pursuant to the Plan, a copy of which the Optionee acknowledges having received. The provisions of the Plan are incorporated into this Agreement by this reference. Capitalized terms are defined in
Section 15 of this Agreement. 
 SECTION 2. RIGHT TO EXERCISE. 

(a) Exercisability. Subject to Subsection (b) below and the other conditions set forth in this Agreement, all or part of this
option may be exercised prior to its expiration at the time or times set forth in the Notice of Stock Option Grant. Shares purchased by exercising this option may be subject to the Right of Repurchase under Section 7. 

(b) Stockholder Approval. Any other provision of this Agreement notwithstanding, no portion of this option shall be exercisable at any
time prior to the approval of the Plan by the Company’s stockholders. 

 SECTION 3. NO TRANSFER OR ASSIGNMENT OF OPTION. 

Except as otherwise provided in this Agreement, this option and the rights and privileges conferred hereby shall not be sold, pledged or
otherwise transferred (whether by operation of law or otherwise) and shall not be subject to sale under execution, attachment, levy or similar process. 

SECTION 4. EXERCISE PROCEDURES. 
 (a)
Notice of Exercise. The Optionee or the Optionee’s representative may exercise this option by giving written notice to the Company pursuant to Section 13(c). The notice shall specify the election to exercise this option, the number of
Shares for which it is being exercised and the form of payment. The person exercising this option shall sign the notice. In the event that this option is being exercised by the representative of the Optionee, the notice shall be accompanied by proof
(satisfactory to the Company) of the representative’s right to exercise this option. The Optionee or the Optionee’s representative shall deliver to the Company, at the time of giving the notice, payment in a form permissible under
Section 5 for the full amount of the Purchase Price. In the event of a partial exercise of this option, Shares shall be deemed to have been purchased in the order in which they vest in accordance with the Notice of Stock Option Grant. 

(b) Issuance of Shares. After receiving a proper notice of exercise, the Company shall cause to be issued one or more certificates
evidencing the Shares for which this option has been exercised. Such Shares shall be registered (i) in the name of the person exercising this option, (ii) in the names of such person and his or her spouse as community property or as joint
tenants with the right of survivorship or (iii) with the Company’s consent, in the name of a revocable trust. In the case of Restricted Shares, the Company shall cause such certificates to be deposited in escrow under Section 7(c). In
the case of other Shares, the Company shall cause such certificates to be delivered to or upon the order of the person exercising this option. 

(c) Withholding Taxes. In the event that the Company determines that it is required to withhold any tax as a result of the exercise of
this option, the Optionee, as a condition to the exercise of this option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding requirements. The Optionee shall also make arrangements satisfactory to the Company
to enable it to satisfy any withholding requirements that may arise in connection with the vesting or disposition of Shares purchased by exercising this option. 

SECTION 5. PAYMENT FOR STOCK. 
 (a)
Cash. All or part of the Purchase Price may be paid in cash or cash equivalents. 
 (b) Surrender of Stock. At the discretion of
the Board of Directors, all or any part of the Purchase Price may be paid by surrendering, or attesting to the ownership of, Shares that are already owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer and
shall be valued at their Fair Market Value as of the date when this option is exercised. 

  
 2 

 (c) Exercise/Sale. All or part of the Purchase Price and any withholding taxes may be
paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver all or part of the sales proceeds to the Company. However, payment pursuant to this
Subsection (c) shall be permitted only if (i) Stock then is publicly traded and (ii) such payment does not violate applicable law. 

SECTION 6. TERM AND EXPIRATION. 
 (a)
Basic Term. This option shall in any event expire on the expiration date set forth in the Notice of Stock Option Grant, which date is 10 years after the Date of Grant (five years after the Date of Grant if this option is designated as an ISO in
the Notice of Stock Option Grant and Section 3(b) of the Plan applies). 
 (b) Termination of Service (Except by Death). If the
Optionee’s Service terminates for any reason other than death, then this option shall expire on the earliest of the following occasions: 

(i) The expiration date determined pursuant to Subsection (a) above; 

(ii) The date three months after the termination of the Optionee’s Service for any reason other than Disability; or 

(iii) The date six months after the termination of the Optionee’s Service by reason of Disability. 

The Optionee may exercise all or part of this option at any time before its expiration under the preceding sentence, but only to the extent that this option
is exercisable for vested Shares on or before the date when the Optionee’s Service terminates. When the Optionee’s Service terminates, this option shall expire immediately with respect to the number of Shares for which this option is not
yet exercisable and with respect to any Restricted Shares. In the event that the Optionee dies after termination of Service but before the expiration of this option, all or part of this option may be exercised (prior to expiration) by the executors
or administrators of the Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option was exercisable for vested Shares on
or before the date when the Optionee’s Service terminated. 
 (c) Death of the Optionee. If the Optionee dies while in Service,
then this option shall expire on the earlier of the following dates: 
 (i) The expiration date determined pursuant to
Subsection (a) above; or 
 (ii) The date 12 months after the Optionee’s death. 

  
 3 

 All or part of this option may be exercised at any time before its expiration under the preceding sentence
by the executors or administrators of the Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option is exercisable for
vested Shares on or before the date of the Optionee’s death. When the Optionee dies, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable and with respect to any Restricted
Shares. 
 (d) Part-Time Employment and Leaves of Absence. If the Optionee commences working on a part-time basis, then the Company
may adjust the vesting schedule set forth in the Notice of Stock Option Grant in accordance with the Company’s part-time work policy or the terms of an agreement between the Optionee and the Company pertaining to his or her part-time schedule.
If the Optionee goes on a leave of absence, then the Company may adjust the vesting schedule set forth in the Notice of Stock Option Grant in accordance with the Company’s leave of absence policy or the terms of such leave. Except as provided
in the preceding sentence, Service shall be deemed to continue for any purpose under this Agreement while the Optionee is on a bona fide leave of absence, if (i) such leave was approved by the Company in writing and
(ii) continued crediting of Service for such purpose is expressly required by the terms of such leave or by applicable law (as determined by the Company). Service shall be deemed to terminate when such leave ends, unless the Optionee
immediately returns to active work. 
 (e) Notice Concerning ISO Treatment. Even if this option is designated as an ISO in the Notice
of Stock Option Grant, it ceases to qualify for favorable tax treatment as an ISO to the extent that it is exercised: 
 (i)
More than three months after the date when the Optionee ceases to be an Employee for any reason other than death or permanent and total disability (as defined in Section 22(e)(3) of the Code); 

(ii) More than 12 months after the date when the Optionee ceases to be an Employee by reason of permanent and total disability
(as defined in Section 22(e)(3) of the Code); or 
 (iii) More than three months after the date when the Optionee has
been on a leave of absence for 90 days, unless the Optionee’s reemployment rights following such leave were guaranteed by statute or by contract. 

SECTION 7. RIGHT OF REPURCHASE. 
 (a)
Scope of Repurchase Right. Until they vest in accordance with the Notice of Stock Option Grant and Subsection (b) below, the Shares acquired under this Agreement shall be Restricted Shares and shall be subject to the Company’s Right of
Repurchase. The Company, however, may decline to exercise its Right of Repurchase or may exercise its Right of Repurchase only with respect to a portion of the Restricted Shares. The Company may exercise its Right of Repurchase only during the
Repurchase Period following the termination of the Optionee’s Service. The Right of Repurchase may 

  
 4 

 
be exercised automatically under Subsection (d) below. If the Right of Repurchase is exercised, the Company shall pay the Optionee an amount equal to the lower of (i) the Exercise Price
of each Restricted Share being repurchased or (ii) the Fair Market Value of such Restricted Share at the time the Right of Repurchase is exercised. 

(b) Lapse of Repurchase Right. The Right of Repurchase shall lapse with respect to the Restricted Shares in accordance with the vesting
schedule set forth in the Notice of Stock Option Grant. 
 (c) Escrow. Upon issuance, the certificate(s) for Restricted Shares shall
be deposited in escrow with the Company to be held in accordance with the provisions of this Agreement. Any additional or exchanged securities or other property described in Subsection (f) below shall immediately be delivered to the Company to
be held in escrow. All ordinary cash dividends on Restricted Shares (or on other securities held in escrow) shall be paid directly to the Optionee and shall not be held in escrow. Restricted Shares, together with any other assets held in escrow
under this Agreement, shall be (i) surrendered to the Company for repurchase upon exercise of the Right of Repurchase or the Right of First Refusal or (ii) released to the Optionee upon his or her request to the extent that the Shares have
ceased to be Restricted Shares (but not more frequently than once every six months). In any event, all Shares that have ceased to be Restricted Shares, together with any other vested assets held in escrow under this Agreement, shall be released
within 90 days after the earlier of (i) the termination of the Optionee’s Service or (ii) the lapse of the Right of First Refusal. 

(d) Exercise of Repurchase Right. The Company shall be deemed to have exercised its Right of Repurchase automatically for all Restricted
Shares as of the commencement of the Repurchase Period, unless the Company during the Repurchase Period notifies the holder of the Restricted Shares pursuant to Section 13(c) that it will not exercise its Right of Repurchase for some or all of
the Restricted Shares. During the Repurchase Period, the Company shall pay to the holder of the Restricted Shares the purchase price determined under Subsection (a) above for the Restricted Shares being repurchased. Payment shall be made in
cash or cash equivalents and/or by canceling indebtedness to the Company incurred by the Optionee in the purchase of the Restricted Shares. The certificate(s) representing the Restricted Shares being repurchased shall be delivered to the Company.

 (e) Termination of Rights as Stockholder. If the Right of Repurchase is exercised in accordance with this Section 7 and the
Company makes available the consideration for the Restricted Shares being repurchased, then the person from whom the Restricted Shares are repurchased shall no longer have any rights as a holder of the Restricted Shares (other than the right to
receive payment of such consideration). Such Restricted Shares shall be deemed to have been repurchased pursuant to this Section 7, whether or not the certificate(s) for such Restricted Shares have been delivered to the Company or the
consideration for such Restricted Shares has been accepted. 

  
 5 

 (f) Additional or Exchanged Securities and Property. In the event of a merger or
consolidation of the Company with or into another entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents)
that are by reason of such transaction exchanged for, or distributed with respect to, any Restricted Shares shall immediately be subject to the Right of Repurchase. Appropriate adjustments to reflect the exchange or distribution of such securities
or property shall be made to the number and/or class of the Restricted Shares. Appropriate adjustments shall also be made to the price per share to be paid upon the exercise of the Right of Repurchase, provided that the aggregate purchase price
payable for the Restricted Shares shall remain the same. In the event of a merger or consolidation of the Company with or into another entity or any other corporate reorganization, the Right of Repurchase may be exercised by the Company’s
successor. 
 (g) Transfer of Restricted Shares. The Optionee shall not transfer, assign, encumber or otherwise dispose of any
Restricted Shares without the Company’s written consent, except as provided in the following sentence. The Optionee may transfer Restricted Shares to one or more members of the Optionee’s Immediate Family or to a trust established by the
Optionee for the benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of this
Agreement. If the Optionee transfers any Restricted Shares, then this Agreement shall apply to the Transferee to the same extent as to the Optionee. 

(h) Assignment of Repurchase Right. The Board of Directors may freely assign the Company’s Right of Repurchase, in whole or in
part. Any person who accepts an assignment of the Right of Repurchase from the Company shall assume all of the Company’s rights and obligations under this Section 7. 

SECTION 8. RIGHT OF FIRST REFUSAL. 

(a) Right of First Refusal. In the event that the Optionee proposes to sell, pledge or otherwise transfer to a third party any Shares
acquired under this Agreement, or any interest in such Shares, the Company shall have the Right of First Refusal with respect to all (and not less than all) of such Shares. If the Optionee desires to transfer Shares acquired under this Agreement,
the Optionee shall give a written Transfer Notice to the Company describing fully the proposed transfer, including the number of Shares proposed to be transferred, the proposed transfer price, the name and address of the proposed Transferee and
proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal, State or foreign securities laws. The Transfer Notice shall be signed both by the Optionee and by the proposed Transferee and must
constitute a binding commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all, and not less than all, of the Shares on the terms of the proposal described in the Transfer Notice (subject, however, to
any change in such terms permitted under Subsection (b) below) by delivery of a notice of exercise of the Right of First Refusal within 30 days after the date when the Transfer Notice was received by the Company. 

  
 6 

 (b) Transfer of Shares. If the Company fails to exercise its Right of First Refusal
within 30 days after the date when it received the Transfer Notice, the Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a transfer of the Shares subject to the Transfer Notice on the
terms and conditions described in the Transfer Notice, provided that any such sale is made in compliance with applicable federal, State and foreign securities laws and not in violation of any other contractual restrictions to which the Optionee is
bound. Any proposed transfer on terms and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be subject to the Right of First Refusal and shall require
compliance with the procedure described in Subsection (a) above. If the Company exercises its Right of First Refusal, the parties shall consummate the sale of the Shares on the terms set forth in the Transfer Notice within 60 days after
the date when the Company received the Transfer Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice provided that payment for the Shares was to be made in
a form other than cash or cash equivalents paid at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of the consideration described in the Transfer Notice. 

(c) Additional or Exchanged Securities and Property. In the event of a merger or consolidation of the Company with or into another
entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in
conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents) that are by reason of such transaction exchanged for, or
distributed with respect to, any Shares subject to this Section 8 shall immediately be subject to the Right of First Refusal. Appropriate adjustments to reflect the exchange or distribution of such securities or property shall be made to the
number and/or class of the Shares subject to this Section 8. 
 (d) Termination of Right of First Refusal. Any other provision of
this Section 8 notwithstanding, in the event that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company shall have no Right of First Refusal, and the Optionee shall have no
obligation to comply with the procedures prescribed by Subsections (a) and (b) above. 
 (e) Permitted Transfers. This
Section 8 shall not apply to (i) a transfer by beneficiary designation, will or intestate succession or (ii) a transfer to one or more members of the Optionee’s Immediate Family or to a trust established by the Optionee for the
benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of this Agreement. If the
Optionee transfers any Shares acquired under this Agreement, either under this Subsection (e) or after the Company has failed to exercise the Right of First Refusal, then this Agreement shall apply to the Transferee to the same extent as to the
Optionee. 

  
 7 

 (f) Termination of Rights as Stockholder. If the Company makes available, at the time
and place and in the amount and form provided in this Agreement, the consideration for the Shares to be purchased in accordance with this Section 8, then after such time the person from whom such Shares are to be purchased shall no longer have
any rights as a holder of such Shares (other than the right to receive payment of such consideration in accordance with this Agreement). Such Shares shall be deemed to have been purchased in accordance with the applicable provisions hereof, whether
or not the certificate(s) therefor have been delivered as required by this Agreement. 
 (g) Assignment of Right of First Refusal. The
Board of Directors may freely assign the Company’s Right of First Refusal, in whole or in part. Any person who accepts an assignment of the Right of First Refusal from the Company shall assume all of the Company’s rights and obligations
under this Section 8. 
 SECTION 9. LEGALITY OF INITIAL ISSUANCE. 

No Shares shall be issued upon the exercise of this option unless and until the Company has determined that: 

a. It and the Optionee have taken any actions required to register the Shares under the Securities Act or to perfect an
exemption from the registration requirements thereof; 
 b. Any applicable listing requirement of any stock exchange or other
securities market on which Stock is listed has been satisfied; and 
 c. Any other applicable provision of federal, State or
foreign law has been satisfied. 
 SECTION 10. NO REGISTRATION RIGHTS. 

The Company may, but shall not be obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable law.
The Company shall not be obligated to take any affirmative action in order to cause the sale of Shares under this Agreement to comply with any law. 

SECTION 11. RESTRICTIONS ON TRANSFER OF SHARES. 

(a) Securities Law Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been registered under the
Securities Act or have been registered or qualified under the securities laws of any State, the Company at its discretion may impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of appropriate legends
on stock certificates or the imposition of stop-transfer instructions) if, in the judgment of the Company, such restrictions are necessary or desirable in order to achieve compliance with the Securities Act,
the securities laws of any State or any other law. 

  
 8 

 (b) Market Stand-Off. In connection with any underwritten public offering by the
Company of its equity securities pursuant to an effective registration statement filed under the Securities Act, including the Company’s initial public offering, the Optionee or a Transferee shall not directly or indirectly sell, make any short
sale of, loan, hypothecate, pledge, offer, grant or sell any option or other contract for the purchase of, purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or agree to engage in any of the foregoing
transactions with respect to, any Shares acquired under this Agreement without the prior written consent of the Company or its managing underwriter. Such restriction (the “Market Stand-Off”) shall be in effect for such period of time
following the date of the final prospectus for the offering as may be requested by the Company or such underwriter. In no event, however, shall such period exceed 180 days plus such additional period as may reasonably be requested by the Company or
such underwriter to accommodate regulatory restrictions on (i) the publication or other distribution of research reports or (ii) analyst recommendations and opinions, including (without limitation) the restrictions set forth in
Rule 2711(f)(4) of the National Association of Securities Dealers and Rule 472(f)(4) of the New York Stock Exchange, as amended, or any similar successor rules. The Market Stand-Off shall in any event terminate two years after the date of
the Company’s initial public offering. In the event of the declaration of a stock dividend, a spin-off, a stock split, an adjustment in conversion ratio, a recapitalization or a similar transaction
affecting the Company’s outstanding securities without receipt of consideration, any new, substituted or additional securities which are by reason of such transaction distributed with respect to any Shares subject to the Market Stand-Off, or
into which such Shares thereby become convertible, shall immediately be subject to the Market Stand-Off. In order to enforce the Market Stand-Off, the Company may impose stop-transfer instructions with respect to the Shares acquired under this
Agreement until the end of the applicable stand-off period. The Company’s underwriters shall be beneficiaries of the agreement set forth in this Subsection (b). This Subsection (b) shall not apply to Shares registered in the public
offering under the Securities Act. 
 (c) Investment Intent at Grant. The Optionee represents and agrees that the Shares to be
acquired upon exercising this option will be acquired for investment, and not with a view to the sale or distribution thereof. 
 (d)
Investment Intent at Exercise. In the event that the sale of Shares under the Plan is not registered under the Securities Act but an exemption is available that requires an investment representation or other representation, the Optionee shall
represent and agree at the time of exercise that the Shares being acquired upon exercising this option are being acquired for investment, and not with a view to the sale or distribution thereof, and shall make such other representations as are
deemed necessary or appropriate by the Company and its counsel. 

  
 9 

 (e) Legends. All certificates evidencing Shares purchased under this Agreement shall
bear the following legend: 
 “THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR IN ANY MANNER
DISPOSED OF, EXCEPT IN COMPLIANCE WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY CERTAIN RIGHTS OF FIRST REFUSAL
UPON AN ATTEMPTED TRANSFER OF THE SHARES AND CERTAIN REPURCHASE RIGHTS UPON TERMINATION OF SERVICE WITH THE COMPANY. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE.”

 All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear the following legend (and such other
restrictive legends as are required or deemed advisable under the provisions of any applicable law): 
 “THE SHARES REPRESENTED HEREBY
HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS
COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.” 
 (f) Removal of Legends. If, in the opinion of the Company and its counsel,
any legend placed on a stock certificate representing Shares sold under this Agreement is no longer required, the holder of such certificate shall be entitled to exchange such certificate for a certificate representing the same number of Shares but
without such legend. 
 (g) Administration. Any determination by the Company and its counsel in connection with any of the matters set
forth in this Section 11 shall be conclusive and binding on the Optionee and all other persons. 
 SECTION 12. ADJUSTMENT OF SHARES. 

In the event of any transaction described in Section 8(a) of the Plan, the terms of this option (including, without limitation, the number
and kind of Shares subject to this option and the Exercise Price) shall be adjusted as set forth in Section 8(a) of the Plan. In the event that the Company is a party to a merger or consolidation, this option shall be subject to the agreement
of merger or consolidation, as provided in Section 8(b) of the Plan. 
 SECTION 13. MISCELLANEOUS PROVISIONS. 

(a) Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder with
respect to any Shares subject to this option until the Optionee or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Purchase Price pursuant to Sections 4 and 5. 

  
 10 

 (b) No Retention Rights. Nothing in this option or in the Plan shall confer upon the
Optionee any right to continue in Service for any period of specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which
rights are hereby expressly reserved by each, to terminate his or her Service at any time and for any reason, with or without cause. 

(c) Notice. Any notice required by the terms of this Agreement shall be given in writing. It shall be deemed effective upon
(i) personal delivery, (ii) deposit with the United States Postal Service, by registered or certified mail, with postage and fees prepaid or (iii) deposit with Federal Express Corporation, with shipping charges prepaid. Notice shall
be addressed to the Company at its principal executive office and to the Optionee at the address that he or she most recently provided to the Company in accordance with this Subsection (c). 

(d) Entire Agreement. The Notice of Stock Option Grant, this Agreement and the Plan constitute the entire contract between the parties
hereto with regard to the subject matter hereof. They supersede any other agreements, representations or understandings (whether oral or written and whether express or implied) that relate to the subject matter hereof. 

(e) Choice of Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware, as such
laws are applied to contracts entered into and performed in such State. 
 (f) [Plan Discretionary. The Optionee understands and
acknowledges that (i) the Plan is entirely discretionary, (ii) the Company and the Optionee’s employer have reserved the right to amend, suspend or terminate the Plan at any time, (iii) the grant of an option does not in any way
create any contractual or other right to receive additional grants of options (or benefits in lieu of options) at any time or in any amount and (iv) all determinations with respect to any additional grants, including (without limitation) the
times when options will be granted, the number of Shares offered, the Exercise Price and the vesting schedule, will be at the sole discretion of the Company. 

(g) Extraordinary Compensation. The value of this option shall be an extraordinary item of compensation outside the scope of the
Optionee’s employment contract, if any, and shall not be considered a part of his or her normal or expected compensation for purposes of calculating severance, resignation, redundancy or end-of-service payments, bonuses, long-service awards,
pension or retirement benefits or similar payments. 
 (h) Termination of Service. The Optionee understands and acknowledges that
participation in the Plan ceases upon termination of his or her Service for any reason, except as may explicitly be provided otherwise in the Plan or this Agreement. 

(i) Authorization to Disclose. The Optionee hereby authorizes and directs the Optionee’s employer to disclose to the Company or any
Subsidiary any information regarding the Optionee’s employment, the nature and amount of the Optionee’s compensation and the fact and conditions of the Optionee’s participation in the Plan, as the Optionee’s employer deems
necessary or appropriate to facilitate the administration of the Plan. 
 (j) Personal Data Authorization. The Optionee consents to
the collection, use and transfer of personal data as described in this Subsection (j). The Optionee understands and acknowledges that the Company, the Optionee’s employer and the Company’s other Subsidiaries hold certain personal
information regarding the Optionee for the purpose of managing and administering the Plan, including (without limitation) the Optionee’s name, home address, telephone number, date of birth, social insurance number, salary, nationality, job
title, any Shares or directorships held in the Company and details of all options or any other entitlements to Shares awarded, canceled, exercised, vested, unvested or outstanding in the Optionee’s favor (the “Data”). The Optionee
further understands and acknowledges that the Company and/or its Subsidiaries will transfer Data among themselves as necessary for the purpose of implementation, administration and management of the Optionee’s participation in the Plan and that
the Company and/or any Subsidiary may each further transfer Data to any third party assisting the Company in the implementation, administration and management of the Plan. The Optionee understands and acknowledges that the recipients of Data may be
located in the United States or elsewhere. The Optionee authorizes such recipients to receive, possess, use, retain and transfer Data, in electronic or other form, for the purpose of administering the Optionee’s participation in the Plan,
including a transfer to any broker or other third party with whom the Optionee elects to deposit Shares acquired under the Plan of such Data as may be required for the administration of the Plan and/or the subsequent holding of Shares on the
Optionee’s behalf. The Optionee may, at any time, view the Data, require any necessary modifications of Data or withdraw the consents set forth in this Subsection (j) by contacting the Human Resources Department of the Company in writing.]

 SECTION 14. ACKNOWLEDGEMENTS OF THE OPTIONEE. 

(a) Tax Consequences. The Optionee agrees that the Company does not have a duty to design or administer the Plan or its other
compensation programs in a manner that minimizes the Optionee’s tax liabilities. The Optionee shall not make any claim against the Company or its Board of Directors, officers or employees related to tax liabilities arising from this option or
the Optionee’s other compensation. In particular, the Optionee acknowledges that this option is exempt from Section 409A of the Code only if the Exercise Price is at least equal to the Fair Market Value per Share on the Date of Grant.
Since Shares are not traded on an established securities market, the determination of their Fair Market Value is made by the Board of Directors or by an independent valuation firm retained by the Company. The Optionee acknowledges that there is no
guarantee in either case that the Internal Revenue Service will agree with the valuation, and the Optionee shall not make any claim against the Company or its Board of Directors, officers or employees in the event that the Internal Revenue Service
asserts that the valuation was too low. 
 (b) Electronic Delivery of Documents. The Optionee agrees that the Company may deliver by
email all documents relating to the Plan or this option (including, without limitation, a copy of the Plan) and all other documents that the Company is required to deliver to its security holders (including, without limitation, disclosures that may
be required by the Securities and Exchange Commission). The Optionee also agrees that the Company may deliver these documents by posting them on a website maintained by the Company or by a third party under contract with the Company. If the Company
posts these documents on a website, it shall notify the Optionee by email. 

  
 11 

 SECTION 15. DEFINITIONS. 

(a) “Agreement” shall mean this Stock Option Agreement. 

(b) “Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time or, if a Committee
has been appointed, such Committee. 
 (c) “Code” shall mean the Internal Revenue Code of 1986, as amended. 

(d) “Committee” shall mean a committee of the Board of Directors, as described in Section 2 of the Plan. 

(e) “Company” shall mean SI-BONE, Inc., a Delaware corporation. 

(f) “Consultant” shall mean a person who performs bona fide services for the Company, a Parent or a Subsidiary as a consultant
or advisor, excluding Employees and Outside Directors. 
 (g) “Date of Grant” shall mean the date of grant specified in the
Notice of Stock Option Grant, which date shall be the later of (i) the date on which the Board of Directors resolved to grant this option or (ii) the first day of the Optionee’s Service. 

(h) “Disability” shall mean that the Optionee is unable to engage in any substantial gainful activity by reason of any
medically determinable physical or mental impairment. 
 (i) “Employee” shall mean any individual who is a common-law employee of the Company, a Parent or a Subsidiary. 
 (j) “Exercise Price”
shall mean the amount for which one Share may be purchased upon exercise of this option, as specified in the Notice of Stock Option Grant. 

(k) “Fair Market Value” shall mean the fair market value of a Share, as determined by the Board of Directors in good faith.
Such determination shall be conclusive and binding on all persons. 
 (l) “Immediate Family” shall mean any child,
stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law and shall include adoptive relationships. 

(m) “ISO” shall mean an employee incentive stock option described in Section 422(b) of the Code. 

  
 12 

 (n) “Notice of Stock Option Grant” shall mean the document so entitled to
which this Agreement is attached. 
 (o) “NSO” shall mean a stock option not described in Sections 422(b)
or 423(b) of the Code. 
 (p) “Optionee” shall mean the person named in the Notice of Stock Option Grant. 

(q) “Outside Director” shall mean a member of the Board of Directors who is not an Employee. 

(r) “Parent” shall mean any corporation (other than the Company) in an unbroken chain of corporations ending with the Company,
if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(s) “Plan” shall mean the SI-BONE, Inc. 2008 Stock Plan, as in effect on the Date of Grant. 

(t) “Purchase Price” shall mean the Exercise Price multiplied by the number of Shares with respect to which this option is
being exercised. 
 (u) “Repurchase Period” shall mean a period of 90 consecutive days commencing on the date when the
Optionee’s Service terminates for any reason, including (without limitation) death or disability. 
 (v) “Restricted
Share” shall mean a Share that is subject to the Right of Repurchase. 
 (w) “Right of First Refusal” shall mean
the Company’s right of first refusal described in Section 8. 
 (x) “Right of Repurchase” shall mean the
Company’s right of repurchase described in Section 7. 
 (y) “Securities Act” shall mean the Securities Act of
1933, as amended. 
 (z) “Service” shall mean service as an Employee, Outside Director or Consultant. 

(aa) “Share” shall mean one share of Stock, as adjusted in accordance with Section 8 of the Plan (if applicable). 

(bb) “Stock” shall mean the Series 1 Common Stock of the Company. 

  
 13 

 (cc) “Subsidiary” shall mean any corporation (other than the Company) in an
unbroken chain of corporations beginning with the Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the
other corporations in such chain. 
 (dd) “Transferee” shall mean any person to whom the Optionee has directly or indirectly
transferred any Share acquired under this Agreement. 
 (ee) “Transfer Notice” shall mean the notice of a proposed transfer
of Shares described in Section 8. 

  
 14 

 SI-BONE, INC. 2008 STOCK PLAN 

NOTICE OF STOCK OPTION EXERCISE (EARLY EXERCISE) 

You must sign this Notice on Page 3 before submitting it to the Company. 

OPTIONEE INFORMATION: 
  

									
	Name:	  	  
	  		  	Social Security Number:	  	  

					
	Address:	  	  
	  		  	Employee Number:	  	  

					
		  	  
	  		  		  	

 OPTION INFORMATION: 

 

			
	Date of Grant: _____________ ___, 20__	  	Type of Stock Option:
		
	Exercise Price per Share: $            	  	☐ Nonstatutory (NSO)
		
	Total number of shares of Series 1 Common Stock of SI-BONE, Inc. (the “Company”) covered by the option:             	  	☐ Incentive (ISO)

 _____________________ 

EXERCISE INFORMATION: 

Number of shares of Series 1 Common Stock of the Company for which the option is being exercised now:
            . (These shares are referred to below as the “Purchased Shares.”) 
 Total
Exercise Price for the Purchased Shares: $             
 Form of payment enclosed
[check all that apply]: 
  

	☐	 Check for $            , payable to “SI-BONE,
Inc.” 

  

	☐	 Certificate(s) for             shares of Series 1
Common Stock of the Company. These shares will be valued as of the date this notice is received by the Company. [Requires Company consent.] 

  

	☐	 Attestation Form covering             shares of
Series 1 Common Stock of the Company. These shares will be valued as of the date this notice is received by the Company. [Requires Company consent.] 

Name(s) in which the Purchased Shares should be registered [please review the attached explanation of the available forms of ownership, and then check
one box]: 
  

					
	☐    	 	In my name only	  	
			
	☐	 	In the names of my spouse and myself as community property	  	My spouse’s name (if applicable):
			
	☐	 	In the names of my spouse and myself as community property with the right of survivorship	  	  

  
 15 

							
	☐	 	 In the names of my spouse and myself as joint tenants with the right of survivorship

 
	  		  	
	☐	 	In the name of an eligible revocable trust [requires Stock Transfer Agreement]	  		  	 Full legal name of revocable trust:
  

 
  

		
	The certificate for the Purchased Shares should be sent to the following address:	  	  
  

 
  

 REPRESENTATIONS AND ACKNOWLEDGMENTS OF THE
OPTIONEE: 
 SECTION 1. I REPRESENT AND WARRANT TO THE COMPANY THAT I AM ACQUIRING AND WILL HOLD
THE PURCHASED SHARES FOR INVESTMENT FOR MY ACCOUNT ONLY, AND NOT WITH A VIEW TO, OR FOR RESALE IN CONNECTION WITH, ANY “DISTRIBUTION” OF THE PURCHASED SHARES WITHIN THE MEANING OF THE SECURITIES ACT OF 1933, AS AMENDED (THE
“SECURITIES ACT”). 
 SECTION 2. I UNDERSTAND THAT THE PURCHASED SHARES HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT BY REASON OF A SPECIFIC EXEMPTION THEREFROM AND THAT THE PURCHASED SHARES MUST BE HELD INDEFINITELY, UNLESS THEY ARE SUBSEQUENTLY REGISTERED UNDER THE SECURITIES ACT OR I OBTAIN AN OPINION OF COUNSEL (IN FORM AND SUBSTANCE
SATISFACTORY TO THE COMPANY AND ITS COUNSEL) THAT REGISTRATION IS NOT REQUIRED. 
 SECTION 3. I ACKNOWLEDGE THAT THE
COMPANY IS UNDER NO OBLIGATION TO REGISTER THE PURCHASED SHARES. 
 SECTION 4. I AM AWARE OF THE ADOPTION OF RULE
144 BY THE SECURITIES AND EXCHANGE COMMISSION UNDER THE SECURITIES ACT, WHICH PERMITS LIMITED PUBLIC RESALES OF SECURITIES ACQUIRED IN A NON-PUBLIC OFFERING, SUBJECT TO THE SATISFACTION OF CERTAIN CONDITIONS. THESE CONDITIONS INCLUDE (WITHOUT
LIMITATION) THAT CERTAIN CURRENT PUBLIC INFORMATION ABOUT THE ISSUER IS AVAILABLE, THAT THE RESALE OCCURS ONLY AFTER THE HOLDING PERIOD REQUIRED BY RULE 144 HAS BEEN SATISFIED, THAT THE SALE OCCURS THROUGH AN UNSOLICITED “BROKER’S
TRANSACTION” AND THAT THE AMOUNT OF SECURITIES BEING SOLD DURING ANY THREE-MONTH PERIOD DOES NOT EXCEED SPECIFIED LIMITATIONS. I UNDERSTAND THAT THE CONDITIONS FOR RESALE SET FORTH IN RULE 144 HAVE NOT BEEN SATISFIED AND THAT THE COMPANY
HAS NO PLANS TO SATISFY THESE CONDITIONS IN THE FORESEEABLE FUTURE. 
 SECTION 5. I WILL NOT SELL, TRANSFER OR
OTHERWISE DISPOSE OF THE PURCHASED SHARES IN VIOLATION OF THE SECURITIES ACT, THE SECURITIES EXCHANGE ACT OF 1934, OR THE RULES PROMULGATED THEREUNDER, INCLUDING RULE 144 UNDER THE SECURITIES ACT. 

  
 16 

 SECTION 6. I ACKNOWLEDGE THAT I HAVE RECEIVED AND HAD ACCESS TO SUCH
INFORMATION AS I CONSIDER NECESSARY OR APPROPRIATE FOR DECIDING WHETHER TO INVEST IN THE PURCHASED SHARES AND THAT I HAD AN OPPORTUNITY TO ASK QUESTIONS AND RECEIVE ANSWERS FROM THE COMPANY REGARDING THE TERMS AND CONDITIONS OF THE ISSUANCE OF THE
PURCHASED SHARES. 
 SECTION 7. I AM AWARE THAT MY INVESTMENT IN THE COMPANY IS A SPECULATIVE INVESTMENT THAT HAS
LIMITED LIQUIDITY AND IS SUBJECT TO THE RISK OF COMPLETE LOSS. I AM ABLE, WITHOUT IMPAIRING MY FINANCIAL CONDITION, TO HOLD THE PURCHASED SHARES FOR AN INDEFINITE PERIOD AND TO SUFFER A COMPLETE LOSS OF MY INVESTMENT IN THE PURCHASED SHARES. 

SECTION 8. I ACKNOWLEDGE THAT THE PURCHASED SHARES REMAIN SUBJECT TO THE COMPANY’S RIGHT OF FIRST REFUSAL AND THE
MARKET STAND-OFF (SOMETIMES REFERRED TO AS THE “LOCK-UP”) AND MAY REMAIN SUBJECT TO THE COMPANY’S RIGHT OF REPURCHASE AT THE EXERCISE PRICE, ALL IN ACCORDANCE WITH THE APPLICABLE NOTICE OF STOCK OPTION GRANT AND STOCK OPTION
AGREEMENT. 
 SECTION 9. I ACKNOWLEDGE THAT I AM ACQUIRING THE PURCHASED SHARES SUBJECT TO ALL OTHER TERMS OF THE
NOTICE OF STOCK OPTION GRANT AND STOCK OPTION AGREEMENT. 
 SECTION 10. I ACKNOWLEDGE THAT I HAVE RECEIVED A COPY OF
THE COMPANY’S EXPLANATION OF THE FORMS OF OWNERSHIP AVAILABLE FOR MY PURCHASED SHARES. I ACKNOWLEDGE THAT THE COMPANY HAS ENCOURAGED ME TO CONSULT MY OWN ADVISER TO DETERMINE THE FORM OF OWNERSHIP THAT IS APPROPRIATE FOR ME. IN THE EVENT THAT I
CHOOSE TO TRANSFER MY PURCHASED SHARES TO A TRUST, I AGREE TO SIGN A STOCK TRANSFER AGREEMENT. IN THE EVENT THAT I CHOOSE TO TRANSFER MY PURCHASED SHARES TO A TRUST THAT DOES NOT SATISFY THE REQUIREMENTS DESCRIBED IN THE ATTACHED EXPLANATION (I.E. A
TRUST THAT IS NOT AN ELIGIBLE REVOCABLE TRUST), I ALSO ACKNOWLEDGE THAT THE TRANSFER WILL BE TREATED AS A “DISPOSITION” FOR TAX PURPOSES. AS A RESULT, THE FAVORABLE ISO TAX TREATMENT WILL BE UNAVAILABLE AND OTHER UNFAVORABLE TAX
CONSEQUENCES MAY OCCUR. 
 SECTION 11. I ACKNOWLEDGE THAT I HAVE RECEIVED A COPY OF THE COMPANY’S EXPLANATION
OF THE FEDERAL INCOME TAX CONSEQUENCES OF AN OPTION EXERCISE AND THE TAX ELECTION UNDER SECTION 83(B) OF THE INTERNAL REVENUE CODE. IN THE EVENT THAT I CHOOSE TO MAKE A SECTION 83(B) ELECTION, I ACKNOWLEDGE THAT IT IS MY
RESPONSIBILITY—AND NOT THE COMPANY’S RESPONSIBILITY—TO FILE THE ELECTION IN A TIMELY MANNER, EVEN IF I ASK THE COMPANY OR ITS AGENTS TO MAKE THE FILING ON MY BEHALF. I ACKNOWLEDGE THAT THE COMPANY HAS ENCOURAGED ME TO CONSULT MY OWN
ADVISER TO DETERMINE THE TAX CONSEQUENCES OF ACQUIRING THE PURCHASED SHARES AT THIS TIME. 

  
 17 

 SECTION 12. I AGREE THAT THE COMPANY DOES NOT HAVE A DUTY TO DESIGN
OR ADMINISTER THE 2008 STOCK PLAN OR ITS OTHER COMPENSATION PROGRAMS IN A MANNER THAT MINIMIZES MY TAX LIABILITIES. I WILL NOT MAKE ANY CLAIM AGAINST THE COMPANY OR ITS BOARD OF DIRECTORS, OFFICERS OR EMPLOYEES RELATED TO TAX LIABILITIES ARISING
FROM MY OPTIONS OR MY OTHER COMPENSATION. IN PARTICULAR, I ACKNOWLEDGE THAT MY OPTIONS ARE EXEMPT FROM SECTION 409A OF THE INTERNAL REVENUE CODE ONLY IF THE EXERCISE PRICE PER SHARE IS AT LEAST EQUAL TO THE FAIR MARKET VALUE PER SHARE OF THE
COMPANY’S SERIES 1 COMMON STOCK AT THE TIME THE OPTION WAS GRANTED BY THE COMPANY’S BOARD OF DIRECTORS. SINCE SHARES OF THE COMPANY’S SERIES 1 COMMON STOCK ARE NOT TRADED ON AN ESTABLISHED SECURITIES MARKET, THE DETERMINATION OF THEIR
FAIR MARKET VALUE WAS MADE BY THE COMPANY’S BOARD OF DIRECTORS OR BY AN INDEPENDENT VALUATION FIRM RETAINED BY THE COMPANY. I ACKNOWLEDGE THAT THERE IS NO GUARANTEE IN EITHER CASE THAT THE INTERNAL REVENUE SERVICE WILL AGREE WITH THE VALUATION,
AND I WILL NOT MAKE ANY CLAIM AGAINST THE COMPANY OR ITS BOARD OF DIRECTORS, OFFICERS OR EMPLOYEES IN THE EVENT THAT THE INTERNAL REVENUE SERVICE ASSERTS THAT THE VALUATION WAS TOO LOW. 

SECTION 13. I AGREE TO SEEK THE CONSENT OF MY SPOUSE TO THE EXTENT REQUIRED BY THE COMPANY TO ENFORCE THE FOREGOING.

  

					
	SIGNATURE:	  		  	DATE:
			
	  
	  		  	                        

  
 18 

 SI-BONE, INC. 2008 STOCK PLAN 

NOTICE OF STOCK OPTION GRANT ([EARLY
EXERCISE WITH ACCELERATION]) 
 The Optionee has been granted the following option to purchase shares of
the Series 1 Common Stock of SI-BONE, Inc.: 
  

			
	 Name of Optionee:
	  	«Name»
		
	 Total Number of Shares:
	  	«TotalShares»
		
	 Type of Option:
	  	«ISO» Incentive Stock Option (ISO)
		
		  	«NSO» Nonstatutory Stock Option (NSO)
		
	 Exercise Price per Share:
	  	$«PricePerShare»
		
	 Date of Grant:
	  	«DateGrant»
		
	 Date Exercisable:
	  	This option may be exercised at any time after the Date of Grant for all or any part of the Shares subject to this option.
		
	 Vesting Commencement Date:
	  	«VestComDate»
		
	 Vesting Schedule:
	  	«VestSchedule»
		
	 Expiration Date:
	  	«ExpDate». This option expires earlier if the Optionee’s Service terminates earlier, as provided in Section 6 of the Stock Option Agreement.

 By signing below, the Optionee and the Company agree that this option is granted under, and governed by the terms and
conditions of, the 2008 Stock Plan and the Stock Option Agreement. Both of these documents are attached to, and made a part of, this Notice of Stock Option Grant. Section 14 of the Stock Option Agreement includes important acknowledgements
of the Optionee. 
  

							
	OPTIONEE:	 		 	SI-BONE, INC.
				
	  
	 		 	By:	 	  

		 		 	Title:	 	  

 THE OPTION GRANTED PURSUANT TO THIS AGREEMENT AND THE SHARES ISSUABLE UPON THE EXERCISE THEREOF HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT
SUCH REGISTRATION IS NOT REQUIRED. 
 SI-BONE, INC. 2008 STOCK PLAN: 

STOCK OPTION AGREEMENT 

SECTION 1. GRANT OF OPTION. 
 (a)
Option. On the terms and conditions set forth in the Notice of Stock Option Grant and this Agreement, the Company grants to the Optionee on the Date of Grant the option to purchase at the Exercise Price the number of Shares set forth in the
Notice of Stock Option Grant. The Exercise Price is agreed to be at least 100% of the Fair Market Value per Share on the Date of Grant (110% of Fair Market Value if this option is designated as an ISO in the Notice of Stock Option Grant and
Section 3(b) of the Plan applies). This option is intended to be an ISO or an NSO, as provided in the Notice of Stock Option Grant. 

(b) $100,000 Limitation. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it shall be deemed to be an
NSO to the extent (and only to the extent) required by the $100,000 annual limitation under Section 422(d) of the Code. 
 (c) Stock
Plan and Defined Terms. This option is granted pursuant to the Plan, a copy of which the Optionee acknowledges having received. The provisions of the Plan are incorporated into this Agreement by this reference. Capitalized terms are defined in
Section 15 of this Agreement. 
 SECTION 2. RIGHT TO EXERCISE. 

(a) Exercisability. Subject to Subsection (b) below and the other conditions set forth in this Agreement, all or part of this
option may be exercised prior to its expiration at the time or times set forth in the Notice of Stock Option Grant. Shares purchased by exercising this option may be subject to the Right of Repurchase under Section 7. 

(b) Stockholder Approval. Any other provision of this Agreement notwithstanding, no portion of this option shall be exercisable at any
time prior to the approval of the Plan by the Company’s stockholders. 

 SECTION 3. NO TRANSFER OR ASSIGNMENT OF OPTION. 

Except as otherwise provided in this Agreement, this option and the rights and privileges conferred hereby shall not be sold, pledged or
otherwise transferred (whether by operation of law or otherwise) and shall not be subject to sale under execution, attachment, levy or similar process. 

SECTION 4. EXERCISE PROCEDURES. 
 (a)
Notice of Exercise. The Optionee or the Optionee’s representative may exercise this option by giving written notice to the Company pursuant to Section 13(c). The notice shall specify the election to exercise this option, the number
of Shares for which it is being exercised and the form of payment. The person exercising this option shall sign the notice. In the event that this option is being exercised by the representative of the Optionee, the notice shall be accompanied by
proof (satisfactory to the Company) of the representative’s right to exercise this option. The Optionee or the Optionee’s representative shall deliver to the Company, at the time of giving the notice, payment in a form permissible under
Section 5 for the full amount of the Purchase Price. In the event of a partial exercise of this option, Shares shall be deemed to have been purchased in the order in which they vest in accordance with the Notice of Stock Option Grant. 

(b) Issuance of Shares. After receiving a proper notice of exercise, the Company shall cause to be issued one or more certificates
evidencing the Shares for which this option has been exercised. Such Shares shall be registered (i) in the name of the person exercising this option, (ii) in the names of such person and his or her spouse as community property or as joint
tenants with the right of survivorship or (iii) with the Company’s consent, in the name of a revocable trust. In the case of Restricted Shares, the Company shall cause such certificates to be deposited in escrow under Section 7(c). In
the case of other Shares, the Company shall cause such certificates to be delivered to or upon the order of the person exercising this option. 

(c) Withholding Taxes. In the event that the Company determines that it is required to withhold any tax as a result of the exercise of
this option, the Optionee, as a condition to the exercise of this option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding requirements. The Optionee shall also make arrangements satisfactory to the Company
to enable it to satisfy any withholding requirements that may arise in connection with the vesting or disposition of Shares purchased by exercising this option. 

SECTION 5. PAYMENT FOR STOCK. 
 (a)
Cash. All or part of the Purchase Price may be paid in cash or cash equivalents. 
 (b) Surrender of Stock. At the discretion
of the Board of Directors, all or any part of the Purchase Price may be paid by surrendering, or attesting to the ownership of, Shares that are already owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer
and shall be valued at their Fair Market Value as of the date when this option is exercised. 
 (c) Exercise/Sale. All or part of the
Purchase Price and any withholding taxes may be paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver all or part of the sales proceeds to
the Company. However, payment pursuant to this Subsection (c) shall be permitted only if (i) Stock then is publicly traded and (ii) such payment does not violate applicable law. 

  
 2 

 SECTION 6. TERM AND EXPIRATION. 

(a) Basic Term. This option shall in any event expire on the expiration date set forth in the Notice of Stock Option Grant, which date
is 10 years after the Date of Grant (five years after the Date of Grant if this option is designated as an ISO in the Notice of Stock Option Grant and Section 3(b) of the Plan applies). 

(b) Termination of Service (Except by Death). If the Optionee’s Service terminates for any reason other than death, then this
option shall expire on the earliest of the following occasions: 
 (i) The expiration date determined pursuant to Subsection
(a) above; 
 (ii) The date three months after the termination of the Optionee’s Service for any reason other than
Disability; or 
 (iii) The date six months after the termination of the Optionee’s Service by reason of Disability.

 The Optionee may exercise all or part of this option at any time before its expiration under the preceding sentence, but only to the extent that this
option is exercisable for vested Shares on or before the date when the Optionee’s Service terminates. When the Optionee’s Service terminates, this option shall expire immediately with respect to the number of Shares for which this option
is not yet exercisable and with respect to any Restricted Shares. In the event that the Optionee dies after termination of Service but before the expiration of this option, all or part of this option may be exercised (prior to expiration) by the
executors or administrators of the Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option was exercisable for vested
Shares on or before the date when the Optionee’s Service terminated. 
 (c) Death of the Optionee. If the Optionee dies while in
Service, then this option shall expire on the earlier of the following dates: 
 (i) The expiration date determined pursuant
to Subsection (a) above; or 
 (ii) The date 12 months after the Optionee’s death. 

All or part of this option may be exercised at any time before its expiration under the preceding sentence by the executors or administrators of the
Optionee’s estate or by any person who has 

  
 3 

 
acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option is exercisable for vested Shares on or before the date
of the Optionee’s death. When the Optionee dies, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable and with respect to any Restricted Shares. 

(d) Part-Time Employment and Leaves of Absence. If the Optionee commences working on a part-time basis, then the Company may adjust the
vesting schedule set forth in the Notice of Stock Option Grant in accordance with the Company’s part-time work policy or the terms of an agreement between the Optionee and the Company pertaining to his or her part-time schedule. If the Optionee
goes on a leave of absence, then the Company may adjust the vesting schedule set forth in the Notice of Stock Option Grant in accordance with the Company’s leave of absence policy or the terms of such leave. Except as provided in the preceding
sentence, Service shall be deemed to continue for any purpose under this Agreement while the Optionee is on a bona fide leave of absence, if (i) such leave was approved by the Company in writing and (ii) continued crediting of
Service for such purpose is expressly required by the terms of such leave or by applicable law (as determined by the Company). Service shall be deemed to terminate when such leave ends, unless the Optionee immediately returns to active work. 

(e) Notice Concerning ISO Treatment. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it ceases to
qualify for favorable tax treatment as an ISO to the extent that it is exercised: 
 (i) More than three months after the
date when the Optionee ceases to be an Employee for any reason other than death or permanent and total disability (as defined in Section 22(e)(3) of the Code); 

(ii) More than 12 months after the date when the Optionee ceases to be an Employee by reason of permanent and total disability
(as defined in Section 22(e)(3) of the Code); or 
 (iii) More than three months after the date when the Optionee has
been on a leave of absence for 90 days, unless the Optionee’s reemployment rights following such leave were guaranteed by statute or by contract. 

SECTION 7. RIGHT OF REPURCHASE. 
 (a)
Scope of Repurchase Right. Until they vest in accordance with the Notice of Stock Option Grant and Subsection (b) below, the Shares acquired under this Agreement shall be Restricted Shares and shall be subject to the Company’s Right
of Repurchase. The Company, however, may decline to exercise its Right of Repurchase or may exercise its Right of Repurchase only with respect to a portion of the Restricted Shares. The Company may exercise its Right of Repurchase only during the
Repurchase Period following the termination of the Optionee’s Service. The Right of Repurchase may be exercised automatically under Subsection (d) below. If the Right of Repurchase is exercised, the Company shall pay the Optionee an amount
equal to the lower of (i) the Exercise Price of each Restricted Share being repurchased or (ii) the Fair Market Value of such Restricted Share at the time the Right of Repurchase is exercised. 

  
 4 

 (b) Lapse of Repurchase Right. The Right of Repurchase shall lapse with respect to
the Restricted Shares in accordance with the vesting schedule set forth in the Notice of Stock Option Grant. [In addition, if the Company is subject to a Change in Control before the Optionee’s Service terminates, the Right of Repurchase shall
lapse with respect to     % of the Shares subject to this option.][In addition, if the Company is subject to a Change in Control before the Optionee’s service terminates, then all of the Restricted Shares shall vest and the
Right of Repurchase shall lapse in full provided that the Optionee agrees to provide service as a full-time Employee or Consultant for the acquirer or the surviving entity for a period not to exceed
             unless otherwise agreed to by the Optionee, the Company and the acquirer or surviving entity.] 

(c) Escrow. Upon issuance, the certificate(s) for Restricted Shares shall be deposited in escrow with the Company to be held in
accordance with the provisions of this Agreement. Any additional or exchanged securities or other property described in Subsection (f) below shall immediately be delivered to the Company to be held in escrow. All ordinary cash dividends on
Restricted Shares (or on other securities held in escrow) shall be paid directly to the Optionee and shall not be held in escrow. Restricted Shares, together with any other assets held in escrow under this Agreement, shall be (i) surrendered to
the Company for repurchase upon exercise of the Right of Repurchase or the Right of First Refusal or (ii) released to the Optionee upon his or her request to the extent that the Shares have ceased to be Restricted Shares (but not more
frequently than once every six months). In any event, all Shares that have ceased to be Restricted Shares, together with any other vested assets held in escrow under this Agreement, shall be released within 90 days after the earlier of (i) the
termination of the Optionee’s Service or (ii) the lapse of the Right of First Refusal. 
 (d) Exercise of Repurchase Right.
The Company shall be deemed to have exercised its Right of Repurchase automatically for all Restricted Shares as of the commencement of the Repurchase Period, unless the Company during the Repurchase Period notifies the holder of the Restricted
Shares pursuant to Section 13(c) that it will not exercise its Right of Repurchase for some or all of the Restricted Shares. During the Repurchase Period, the Company shall pay to the holder of the Restricted Shares the purchase price
determined under Subsection (a) above for the Restricted Shares being repurchased. Payment shall be made in cash or cash equivalents and/or by canceling indebtedness to the Company incurred by the Optionee in the purchase of the Restricted
Shares. The certificate(s) representing the Restricted Shares being repurchased shall be delivered to the Company. 
 (e) Termination of
Rights as Stockholder. If the Right of Repurchase is exercised in accordance with this Section 7 and the Company makes available the consideration for the Restricted Shares being repurchased, then the person from whom the Restricted Shares
are repurchased shall no longer have any rights as a holder of the Restricted Shares (other than the right to receive payment of such consideration). Such Restricted Shares shall be deemed to have been repurchased pursuant to this Section 7,
whether or not the certificate(s) for such Restricted Shares have been delivered to the Company or the consideration for such Restricted Shares has been accepted. 

  
 5 

 (f) Additional or Exchanged Securities and Property. In the event of a merger or
consolidation of the Company with or into another entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an
adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents) that are by reason of such transaction exchanged
for, or distributed with respect to, any Restricted Shares shall immediately be subject to the Right of Repurchase. Appropriate adjustments to reflect the exchange or distribution of such securities or property shall be made to the number and/or
class of the Restricted Shares. Appropriate adjustments shall also be made to the price per share to be paid upon the exercise of the Right of Repurchase, provided that the aggregate purchase price payable for the Restricted Shares shall remain the
same. In the event of a merger or consolidation of the Company with or into another entity or any other corporate reorganization, the Right of Repurchase may be exercised by the Company’s successor. 

(g) Transfer of Restricted Shares. The Optionee shall not transfer, assign, encumber or otherwise dispose of any Restricted Shares
without the Company’s written consent, except as provided in the following sentence. The Optionee may transfer Restricted Shares to one or more members of the Optionee’s Immediate Family or to a trust established by the Optionee for the
benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of this Agreement. If the
Optionee transfers any Restricted Shares, then this Agreement shall apply to the Transferee to the same extent as to the Optionee. 
 (h)
Assignment of Repurchase Right. The Board of Directors may freely assign the Company’s Right of Repurchase, in whole or in part. Any person who accepts an assignment of the Right of Repurchase from the Company shall assume all of the
Company’s rights and obligations under this Section 7. 
 SECTION 8. RIGHT OF FIRST REFUSAL. 

(a) Right of First Refusal. In the event that the Optionee proposes to sell, pledge or otherwise transfer to a third party any Shares
acquired under this Agreement, or any interest in such Shares, the Company shall have the Right of First Refusal with respect to all (and not less than all) of such Shares. If the Optionee desires to transfer Shares acquired under this Agreement,
the Optionee shall give a written Transfer Notice to the Company describing fully the proposed transfer, including the number of Shares proposed to be transferred, the proposed transfer price, the name and address of the proposed Transferee and
proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal, State or foreign securities laws. The Transfer Notice shall be signed both by the Optionee and by the proposed Transferee and must
constitute a binding commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all, and not less than all, of the Shares on the terms of the proposal described in the Transfer Notice (subject, however, to
any change in such terms permitted under Subsection (b) below) by delivery of a notice of exercise of the Right of First Refusal within 30 days after the date when the Transfer Notice was received by the Company. 

  
 6 

 (b) Transfer of Shares. If the Company fails to exercise its Right of First Refusal
within 30 days after the date when it received the Transfer Notice, the Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a transfer of the Shares subject to the Transfer Notice on the terms and
conditions described in the Transfer Notice, provided that any such sale is made in compliance with applicable federal, State and foreign securities laws and not in violation of any other contractual restrictions to which the Optionee is bound. Any
proposed transfer on terms and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be subject to the Right of First Refusal and shall require compliance with the
procedure described in Subsection (a) above. If the Company exercises its Right of First Refusal, the parties shall consummate the sale of the Shares on the terms set forth in the Transfer Notice within 60 days after the date when the Company
received the Transfer Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice provided that payment for the Shares was to be made in a form other than cash or
cash equivalents paid at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of the consideration described in the Transfer Notice. 

(c) Additional or Exchanged Securities and Property. In the event of a merger or consolidation of the Company with or into another
entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in conversion ratio, a recapitalization or a
similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents) that are by reason of such transaction exchanged for, or distributed with respect to, any Shares subject
to this Section 8 shall immediately be subject to the Right of First Refusal. Appropriate adjustments to reflect the exchange or distribution of such securities or property shall be made to the number and/or class of the Shares subject to this
Section 8. 
 (d) Termination of Right of First Refusal. Any other provision of this Section 8 notwithstanding, in the event
that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company shall have no Right of First Refusal, and the Optionee shall have no obligation to comply with the procedures prescribed
by Subsections (a) and (b) above. 
 (e) Permitted Transfers. This Section 8 shall not apply to (i) a transfer by
beneficiary designation, will or intestate succession or (ii) a transfer to one or more members of the Optionee’s Immediate Family or to a trust established by the Optionee for the benefit of the Optionee and/or one or more members of the
Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of this Agreement. If the Optionee transfers any Shares acquired under this Agreement,
either under this Subsection (e) or after the Company has failed to exercise the Right of First Refusal, then this Agreement shall apply to the Transferee to the same extent as to the Optionee. 

(f) Termination of Rights as Stockholder. If the Company makes available, at the time and place and in the amount and form provided in
this Agreement, the consideration 

  
 7 

 
for the Shares to be purchased in accordance with this Section 8, then after such time the person from whom such Shares are to be purchased shall no longer have any rights as a holder of
such Shares (other than the right to receive payment of such consideration in accordance with this Agreement). Such Shares shall be deemed to have been purchased in accordance with the applicable provisions hereof, whether or not the certificate(s)
therefor have been delivered as required by this Agreement. 
 (g) Assignment of Right of First Refusal. The Board of Directors may
freely assign the Company’s Right of First Refusal, in whole or in part. Any person who accepts an assignment of the Right of First Refusal from the Company shall assume all of the Company’s rights and obligations under this
Section 8. 
 SECTION 9. LEGALITY OF INITIAL ISSUANCE. 

No Shares shall be issued upon the exercise of this option unless and until the Company has determined that: 

(a) It and the Optionee have taken any actions required to register the Shares under the Securities Act or to perfect an
exemption from the registration requirements thereof; 
 (b) Any applicable listing requirement of any stock exchange or
other securities market on which Stock is listed has been satisfied; and 
 (c) Any other applicable provision of federal,
State or foreign law has been satisfied. 
 SECTION 10. NO REGISTRATION RIGHTS. 

The Company may, but shall not be obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable law.
The Company shall not be obligated to take any affirmative action in order to cause the sale of Shares under this Agreement to comply with any law. 

SECTION 11. RESTRICTIONS ON TRANSFER OF SHARES. 

(a) Securities Law Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been registered under the
Securities Act or have been registered or qualified under the securities laws of any State, the Company at its discretion may impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of appropriate legends
on stock certificates or the imposition of stop-transfer instructions) if, in the judgment of the Company, such restrictions are necessary or desirable in order to achieve compliance with the Securities Act, the securities laws of any State or any
other law. 
 (b) Market Stand-Off. In connection with any underwritten public offering by the Company of its equity securities
pursuant to an effective registration statement filed under the Securities Act, including the Company’s initial public offering, the Optionee or a Transferee shall not directly or indirectly sell, make any short sale of, loan, hypothecate,
pledge, offer, grant 

  
 8 

 
or sell any option or other contract for the purchase of, purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or agree to engage in any of the foregoing
transactions with respect to, any Shares acquired under this Agreement without the prior written consent of the Company or its managing underwriter. Such restriction (the “Market Stand-Off”) shall be in effect for such period of time
following the date of the final prospectus for the offering as may be requested by the Company or such underwriter. In no event, however, shall such period exceed 180 days plus such additional period as may reasonably be requested by the Company or
such underwriter to accommodate regulatory restrictions on (i) the publication or other distribution of research reports or (ii) analyst recommendations and opinions, including (without limitation) the restrictions set forth in Rule
2711(f)(4) of the National Association of Securities Dealers and Rule 472(f)(4) of the New York Stock Exchange, as amended, or any similar successor rules. The Market Stand-Off shall in any event terminate two years after the date of the
Company’s initial public offering. In the event of the declaration of a stock dividend, a spin-off, a stock split, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding
securities without receipt of consideration, any new, substituted or additional securities which are by reason of such transaction distributed with respect to any Shares subject to the Market Stand-Off, or into which such Shares thereby become
convertible, shall immediately be subject to the Market Stand-Off. In order to enforce the Market Stand-Off, the Company may impose stop-transfer instructions with respect to the Shares acquired under this Agreement until the end of the applicable
stand-off period. The Company’s underwriters shall be beneficiaries of the agreement set forth in this Subsection (b). This Subsection (b) shall not apply to Shares registered in the public offering under the Securities Act. 

(c) Investment Intent at Grant. The Optionee represents and agrees that the Shares to be acquired upon exercising this option will be
acquired for investment, and not with a view to the sale or distribution thereof. 
 (d) Investment Intent at Exercise. In the event
that the sale of Shares under the Plan is not registered under the Securities Act but an exemption is available that requires an investment representation or other representation, the Optionee shall represent and agree at the time of exercise that
the Shares being acquired upon exercising this option are being acquired for investment, and not with a view to the sale or distribution thereof, and shall make such other representations as are deemed necessary or appropriate by the Company and its
counsel. 
 (e) Legends. All certificates evidencing Shares purchased under this Agreement shall bear the following legend: 

“THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR IN ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE WITH
THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY CERTAIN RIGHTS OF FIRST REFUSAL UPON AN ATTEMPTED TRANSFER OF THE
SHARES AND CERTAIN REPURCHASE RIGHTS UPON TERMINATION OF SERVICE WITH THE COMPANY. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE.” 

  
 9 

 All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear
the following legend (and such other restrictive legends as are required or deemed advisable under the provisions of any applicable law): 

“THE SHARES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR
OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.” 

(f) Removal of Legends. If, in the opinion of the Company and its counsel, any legend placed on a stock certificate representing Shares
sold under this Agreement is no longer required, the holder of such certificate shall be entitled to exchange such certificate for a certificate representing the same number of Shares but without such legend. 

(g) Administration. Any determination by the Company and its counsel in connection with any of the matters set forth in this
Section 11 shall be conclusive and binding on the Optionee and all other persons. 
 SECTION 12. ADJUSTMENT OF SHARES. 

In the event of any transaction described in Section 8(a) of the Plan, the terms of this option (including, without limitation, the number
and kind of Shares subject to this option and the Exercise Price) shall be adjusted as set forth in Section 8(a) of the Plan. In the event that the Company is a party to a merger or consolidation, this option shall be subject to the agreement
of merger or consolidation, as provided in Section 8(b) of the Plan. 
 SECTION 13. MISCELLANEOUS PROVISIONS. 

(a) Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder with
respect to any Shares subject to this option until the Optionee or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Purchase Price pursuant to Sections 4 and 5. 

(b) No Retention Rights. Nothing in this option or in the Plan shall confer upon the Optionee any right to continue in Service for any
period of specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which rights are hereby expressly reserved by each, to
terminate his or her Service at any time and for any reason, with or without cause. 
 (c) Notice. Any notice required by the terms of
this Agreement shall be given in writing. It shall be deemed effective upon (i) personal delivery, (ii) deposit with the United States Postal Service, by registered or certified mail, with postage and fees prepaid or

  
 10 

 
(iii) deposit with Federal Express Corporation, with shipping charges prepaid. Notice shall be addressed to the Company at its principal executive office and to the Optionee at the address that
he or she most recently provided to the Company in accordance with this Subsection (c). 
 (d) Entire Agreement. The Notice of Stock
Option Grant, this Agreement and the Plan constitute the entire contract between the parties hereto with regard to the subject matter hereof. They supersede any other agreements, representations or understandings (whether oral or written and whether
express or implied) that relate to the subject matter hereof. 
 (e) Choice of Law. This Agreement shall be governed by, and construed
in accordance with, the laws of the State of Delaware, as such laws are applied to contracts entered into and performed in such State. 
 (f)
[Plan Discretionary. The Optionee understands and acknowledges that (i) the Plan is entirely discretionary, (ii) the Company and the Optionee’s employer have reserved the right to amend, suspend or terminate the Plan at any
time, (iii) the grant of an option does not in any way create any contractual or other right to receive additional grants of options (or benefits in lieu of options) at any time or in any amount and (iv) all determinations with respect to
any additional grants, including (without limitation) the times when options will be granted, the number of Shares offered, the Exercise Price and the vesting schedule, will be at the sole discretion of the Company. 

(g) Extraordinary Compensation. The value of this option shall be an extraordinary item of compensation outside the scope of the
Optionee’s employment contract, if any, and shall not be considered a part of his or her normal or expected compensation for purposes of calculating severance, resignation, redundancy or end-of-service payments, bonuses, long-service awards,
pension or retirement benefits or similar payments. 
 (h) Termination of Service. The Optionee understands and acknowledges that
participation in the Plan ceases upon termination of his or her Service for any reason, except as may explicitly be provided otherwise in the Plan or this Agreement. 

(i) Authorization to Disclose. The Optionee hereby authorizes and directs the Optionee’s employer to disclose to the Company or any
Subsidiary any information regarding the Optionee’s employment, the nature and amount of the Optionee’s compensation and the fact and conditions of the Optionee’s participation in the Plan, as the Optionee’s employer deems
necessary or appropriate to facilitate the administration of the Plan. 
 (j) Personal Data Authorization. The Optionee consents to
the collection, use and transfer of personal data as described in this Subsection (j). The Optionee understands and acknowledges that the Company, the Optionee’s employer and the Company’s other Subsidiaries hold certain personal
information regarding the Optionee for the purpose of managing and administering the Plan, including (without limitation) the Optionee’s name, home address, telephone number, date of birth, social insurance number, salary, nationality, job
title, any Shares or directorships held in the Company and details of all options or any other entitlements to Shares awarded, canceled, exercised, vested, unvested or outstanding in the Optionee’s favor (the “Data”). The Optionee
further understands and acknowledges that the 

  
 11 

 
Company and/or its Subsidiaries will transfer Data among themselves as necessary for the purpose of implementation, administration and management of the Optionee’s participation in the Plan
and that the Company and/or any Subsidiary may each further transfer Data to any third party assisting the Company in the implementation, administration and management of the Plan. The Optionee understands and acknowledges that the recipients of
Data may be located in the United States or elsewhere. The Optionee authorizes such recipients to receive, possess, use, retain and transfer Data, in electronic or other form, for the purpose of administering the Optionee’s participation in the
Plan, including a transfer to any broker or other third party with whom the Optionee elects to deposit Shares acquired under the Plan of such Data as may be required for the administration of the Plan and/or the subsequent holding of Shares on the
Optionee’s behalf. The Optionee may, at any time, view the Data, require any necessary modifications of Data or withdraw the consents set forth in this Subsection (j) by contacting the Human Resources Department of the Company in writing.]

 SECTION 14. ACKNOWLEDGEMENTS OF THE OPTIONEE. 

(a) Tax Consequences. The Optionee agrees that the Company does not have a duty to design or administer the Plan or its other
compensation programs in a manner that minimizes the Optionee’s tax liabilities. The Optionee shall not make any claim against the Company or its Board of Directors, officers or employees related to tax liabilities arising from this option or
the Optionee’s other compensation. In particular, the Optionee acknowledges that this option is exempt from Section 409A of the Code only if the Exercise Price is at least equal to the Fair Market Value per Share on the Date of Grant.
Since Shares are not traded on an established securities market, the determination of their Fair Market Value is made by the Board of Directors or by an independent valuation firm retained by the Company. The Optionee acknowledges that there is no
guarantee in either case that the Internal Revenue Service will agree with the valuation, and the Optionee shall not make any claim against the Company or its Board of Directors, officers or employees in the event that the Internal Revenue Service
asserts that the valuation was too low. 
 (b) Electronic Delivery of Documents. The Optionee agrees that the Company may deliver by
email all documents relating to the Plan or this option (including, without limitation, a copy of the Plan) and all other documents that the Company is required to deliver to its security holders (including, without limitation, disclosures that may
be required by the Securities and Exchange Commission). The Optionee also agrees that the Company may deliver these documents by posting them on a website maintained by the Company or by a third party under contract with the Company. If the Company
posts these documents on a website, it shall notify the Optionee by email. 
 SECTION 15. DEFINITIONS. 

(a) “Agreement” shall mean this Stock Option Agreement. 

(b) “Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time or, if a Committee
has been appointed, such Committee. 

  
 12 

 (c) [“Change in Control” shall mean (i) the consummation of a merger
or consolidation of the Company with or into another entity or (ii) the dissolution, liquidation or winding up of the Company. 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 such 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.] 
 (d) “Code” shall mean the Internal Revenue Code of 1986, as amended. 

(e) “Committee” shall mean a committee of the Board of Directors, as described in Section 2 of the Plan. 

(f) “Company” shall mean SI-BONE, Inc., a Delaware corporation. 

(g) “Consultant” shall mean a person who performs bona fide services for the Company, a Parent or a Subsidiary as a consultant
or advisor, excluding Employees and Outside Directors. 
 (h) “Date of Grant” shall mean the date of grant specified in the
Notice of Stock Option Grant, which date shall be the later of (i) the date on which the Board of Directors resolved to grant this option or (ii) the first day of the Optionee’s Service. 

(i) “Disability” shall mean that the Optionee is unable to engage in any substantial gainful activity by reason of any
medically determinable physical or mental impairment. 
 (j) “Employee” shall mean any individual who is a common-law
employee of the Company, a Parent or a Subsidiary. 
 (k) “Exercise Price” shall mean the amount for which one Share may be
purchased upon exercise of this option, as specified in the Notice of Stock Option Grant. 
 (l) “Fair Market Value” shall
mean the fair market value of a Share, as determined by the Board of Directors in good faith. Such determination shall be conclusive and binding on all persons. 

(m) “Immediate Family” shall mean any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling,
mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law and shall include adoptive relationships. 
 (n)
“ISO” shall mean an employee incentive stock option described in Section 422(b) of the Code. 
 (o) “Notice of
Stock Option Grant” shall mean the document so entitled to which this Agreement is attached. 

  
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 (p) “NSO” shall mean a stock option not described in Sections 422(b) or
423(b) of the Code. 
 (q) “Optionee” shall mean the person named in the Notice of Stock Option Grant. 

(r) “Outside Director” shall mean a member of the Board of Directors who is not an Employee. 

(s) “Parent” shall mean any corporation (other than the Company) in an unbroken chain of corporations ending with the Company,
if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(t) “Plan” shall mean the SI-BONE, Inc. 2008 Stock Plan, as in effect on the Date of Grant. 

(u) “Purchase Price” shall mean the Exercise Price multiplied by the number of Shares with respect to which this option is
being exercised. 
 (v) “Repurchase Period” shall mean a period of 90 consecutive days commencing on the date when the
Optionee’s Service terminates for any reason, including (without limitation) death or disability. 
 (w) “Restricted
Share” shall mean a Share that is subject to the Right of Repurchase. 
 (x) “Right of First Refusal” shall mean
the Company’s right of first refusal described in Section 8. 
 (y) “Right of Repurchase” shall mean the
Company’s right of repurchase described in Section 7. 
 (z) “Securities Act” shall mean the Securities Act of
1933, as amended. 
 (aa) “Service” shall mean service as an Employee, Outside Director or Consultant. 

(bb) “Share” shall mean one share of Stock, as adjusted in accordance with Section 8 of the Plan (if applicable). 

(cc) “Stock” shall mean the Series 1 Common Stock of the Company. 

(dd) “Subsidiary” shall mean any corporation (other than the Company) in an unbroken chain of corporations beginning with the
Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

  
 14 

 (ee) “Transferee” shall mean any person to whom the Optionee has directly
or indirectly transferred any Share acquired under this Agreement. 
 (ff) “Transfer Notice” shall mean the notice of a
proposed transfer of Shares described in Section 8. 

  
 15EX-10.3

 Exhibit 10.3 

SI-BONE, INC. 

2018 EQUITY INCENTIVE PLAN 

ADOPTED BY THE BOARD OF DIRECTORS:
JULY 26, 2018 
 APPROVED BY THE STOCKHOLDERS:
OCTOBER 4, 2018 
 EFFECTIVE DATE:
[                ], 2018 

1.    GENERAL. 

(a)    Eligible Award Recipients and Plan Purposes. Employees, Directors and Consultants are eligible to
receive Awards under the Plan. The Company, by means of the Plan, seeks to secure and retain the services of such persons, to provide incentives for such persons to exert maximum efforts for the success of the Company and any Affiliate and to
provide a means by which such eligible recipients may be given an opportunity to benefit from increases in value of the Common Stock through the granting of Awards. 

(b)    Available Awards. The Plan provides for the grant of the following types of Awards:
(i) Incentive Stock Options, (ii) Nonstatutory Stock Options, (iii) Stock Appreciation Rights (iv) Restricted Stock Awards, (v) Restricted Stock Unit Awards, (vi) Performance Stock Awards, (vii) Performance Cash
Awards, and (viii) Other Stock Awards. 
 2.    ADMINISTRATION. 

(a)    Administration by Board. The Board will administer the Plan. The Board may delegate administration of
the Plan to a Committee or Committees, as provided in Section 2(c). 
 (b)    Powers of Board. The
Board will have the power, subject to, and within the limitations of, the express provisions of the Plan: 

(i)    To determine (A) which of the persons eligible under the Plan will be granted Awards; (B) when and
how each Award will be granted; (C) what type of Award will be granted; (D) the provisions of each Award (which need not be identical), including when a person will be permitted to exercise or otherwise receive cash or Common Stock under
the Award; (E) the number of shares of Common Stock subject to, or the cash value of, an Award; and (F) the Fair Market Value applicable to a Stock Award. 

(ii)    To construe and interpret the Plan and Awards granted under it, and to establish, amend and revoke rules
and regulations for administration of the Plan and Awards. The Board, in the exercise of these powers, may correct any defect, omission or inconsistency in the Plan or in any Award Agreement or in the written terms of a Performance Cash Award, in a
manner and to the extent it will deem necessary or expedient to make the Plan or Award fully effective. 

(iii)    To settle all controversies regarding the Plan and Awards granted under it. 

(iv)    To accelerate the time at which an Award may first be exercised or the time during which an Award or any
part thereof will vest, notwithstanding the provisions in the Award Agreement stating the time at which it may first be exercised or the time during which it will vest. 

  
 1. 

 (v)    To prohibit the exercise of any Option, SAR or other
exercisable Award during a period of up to thirty days prior to the consummation of any pending stock dividend, stock split, combination or exchange of shares, merger, consolidation or other distribution (other than normal cash dividends) of Company
assets to stockholders, or any other change affecting the shares of Common Stock or the share price of the Common Stock including any Corporate Transaction, for reasons of administrative convenience. 

(vi)    To suspend or terminate the Plan at any time. Except as otherwise provided in the Plan or an Award
Agreement, suspension or termination of the Plan will not impair a Participant’s rights under his or her then-outstanding Award without his or her written consent except as provided in subsection (viii) below. 

(vii)    To amend the Plan in any respect the Board deems necessary or advisable, including, without limitation, by
adopting amendments relating to Incentive Stock Options and certain nonqualified deferred compensation under Section 409A of the Code and/or to make the Plan or Awards granted under the Plan compliant with the requirements for Incentive Stock
Options or exempt from or compliant with the requirements for nonqualified deferred compensation under Section 409A of the Code, subject to the limitations, if any, of applicable law. However, if required by applicable law or listing
requirements, and except as provided in Section 10(a) relating to Capitalization Adjustments, the Company will seek stockholder approval of any amendment of the Plan that (A) materially increases the number of shares of Common Stock
available for issuance under the Plan, (B) materially expands the class of individuals eligible to receive Awards under the Plan, (C) materially increases the benefits accruing to Participants under the Plan, (D) materially reduces
the price at which shares of Common Stock may be issued or purchased under the Plan, (E) materially extends the term of the Plan, or (F) materially expands the types of Awards available for issuance under the Plan. Except as provided in
the Plan (including subsection (viii) below) or an Award Agreement, no amendment of the Plan will impair a Participant’s rights under an outstanding Award unless (1) the Company requests the consent of the affected Participant, and
(2) such Participant consents in writing. 
 (viii)    To submit any amendment to the Plan for stockholder
approval. 
 (ix)    To approve forms of Award Agreements for use under the Plan and to amend the terms of any
one or more Awards, including, but not limited to, amendments to provide terms more favorable to the Participant than previously provided in the Award Agreement, subject to any specified limits in the Plan that are not subject to Board discretion;
provided however, that a Participant’s rights under any Award will not be impaired by any such amendment unless (A) the Company requests the consent of the affected Participant, and (B) such Participant consents in writing.
Notwithstanding the foregoing, (1) a Participant’s rights will not be deemed to have been impaired by any such amendment if the Board, in its sole discretion, determines that the amendment, taken as a whole, does not materially impair the
Participant’s rights, and (2) subject to the limitations of applicable law, if any, the Board may amend the terms of any one or more Awards without the affected Participant’s consent (A) to maintain the qualified status of the
Award as an Incentive Stock Option under Section 422 of the Code; (B) to change the terms of an Incentive Stock Option, if such change results in impairment of the Award solely because it impairs the qualified status of the Award as an
Incentive Stock Option under Section 422 of the Code; (C) to clarify the manner of exemption from, or to bring the Award into compliance with, Section 409A of the Code; or (D) to comply with other applicable laws or listing
requirements. 

  
 2. 

 (x)    Generally, to exercise such powers and to perform such
acts as the Board deems necessary or expedient to promote the best interests of the Company and that are not in conflict with the provisions of the Plan or Awards. 

(xi)    To adopt such rules, procedures and sub-plans related to the
operation and administration of the Plan as are necessary or appropriate under local laws and regulations to permit participation in the Plan by Employees, Directors or Consultants who are foreign nationals or employed outside the United States
(provided that Board approval will not be necessary for immaterial modifications to the Plan or any Award Agreement that are required for compliance with the laws or regulations of the relevant foreign jurisdiction). 

(xii)    To effect at any time or from time to time, with the consent of any adversely affected Participant,
(A) the reduction of the exercise, purchase or strike price of any outstanding Option or SAR under the Plan; (B) the cancellation of any outstanding Option or SAR under the Plan and the grant in substitution therefor of a new
(1) Option or SAR under the Plan, (2) a Restricted Stock Award, (3) a Restricted Stock Unit Award, (4) an Other Stock Award, (5) cash and/or (6) other valuable consideration determined by the Board, in its sole
discretion; or (C) any other action that is treated as a repricing under generally accepted accounting principles. 

(c)    Delegation to Committee. 

(i)    General. The Board may delegate some or all of the administration of the Plan to a Committee or
Committees. If administration of the Plan 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 of the Committee any of the administrative powers the Committee is authorized to exercise (and references in this Plan to the Board will thereafter be to the Committee or subcommittee). Any delegation of
administrative powers will be reflected in resolutions, not inconsistent with the provisions of the Plan, adopted from time to time by the Board or Committee (as applicable). The Committee may, at any time, abolish the subcommittee and/or revest in
the Committee any powers delegated to the subcommittee. 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. 

(ii)    Rule 16b-3 Compliance. The Committee may consist solely of
two or more Non-Employee Directors, in accordance with Rule 16b-3. 

(d)    Delegation to an Officer. The Board may delegate to one or more Officers the authority to do
one or both of the following (i) designate Employees who are not Officers to be recipients of Options and SARs (and, to the extent permitted by applicable law, other Stock Awards) and, to the extent permitted by applicable law, the terms of
such Awards, and (ii) determine the number of shares of Common Stock to be subject to such Stock Awards granted to such Employees; provided, however, that the Board resolutions regarding such delegation will specify the total number of
shares of Common Stock that may be subject to the Stock Awards granted by such Officer and that such Officer may not grant a Stock Award to himself or herself. 

  
 3. 

 
Any such Stock Awards will be granted on the form of Award Agreement most recently approved for use by the Committee or the Board, unless otherwise provided in the resolutions approving the
delegation authority. Notwithstanding anything to the contrary in this Section 2(d), the Board may not delegate authority to an Officer who is acting solely in the capacity of an Officer (and not also as a Director) to determine the Fair Market
Value pursuant to Section 15(w)(iii) below. 
 (e)    Effect of Board’s Decision. 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 SUBJECT TO THE PLAN. 

(a)    Share Reserve. Subject to Section 10(a) relating to Capitalization Adjustments, and the following
sentence regarding the annual increase, the aggregate number of shares of Common Stock that may be issued pursuant to Stock Awards will not exceed 2,576,538 shares, (the “Share Reserve”). In addition, the Share Reserve will
automatically increase on January 1st of each year for a period of ten years commencing on January 1, 2019 and ending on (and including) January 1, 2028, in an amount equal to five percent (5%) of the total number of shares of
Common Stock outstanding on the last day of the preceding calendar year. Notwithstanding the foregoing, the Board may act prior to the first day of any calendar year to provide that there will be no 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. 

(b)    Share Reserve Limit. For clarity, the Share Reserve in Section 3(a) is a limitation on the
number of shares of Common Stock that may be issued pursuant to the Plan and does not limit the granting of Stock Awards except that the Company shall keep available at all times the number of shares of Common Stock reasonably required to satisfy
its obligations to issue shares pursuant to such Stock Awards. Shares may be issued in connection with a merger or acquisition as permitted by NASDAQ Listing Rule 5635(c) or, if applicable, NYSE Listed Company Manual Section 303A.08, AMEX
Company Guide Section 711 or other applicable rule, and such issuance will not reduce the number of shares available for issuance under the Plan. Furthermore, if a Stock Award or any portion thereof (i) expires or otherwise terminates
without all of the shares covered by such Stock Award having been issued or (ii) is settled in cash (i.e., the Participant receives cash rather than stock), such expiration, termination or settlement will not reduce (or otherwise offset)
the number of shares of Common Stock that are subject to the Share Reserve and available for issuance under the Plan. 

(c)    Reversion of Shares to the Share Reserve. If any shares of Common Stock issued pursuant to a Stock
Award are forfeited back to or repurchased by the Company because of the failure to meet a contingency or condition required to vest such shares in the Participant, then the shares that are forfeited or repurchased will revert to and again become
available for issuance under the Plan. Any shares reacquired by the Company in satisfaction of tax withholding obligations on a Stock Award or as consideration for the exercise or purchase price of a Stock Award will again become available for
issuance under the Plan. 

  
 4. 

 (d)    Incentive Stock Option Limit. Subject to the Share
Reserve (as increased under Section 3(a)) and Section 10(a) relating to Capitalization Adjustments, the aggregate maximum number of shares of Common Stock that may be issued pursuant to the exercise of Incentive Stock Options will be the
number of shares of Common Stock equal to three (3) times the Share Reserve. 
 (e)    Source of
Shares. The stock issuable under the Plan will be shares of authorized but unissued or reacquired Common Stock, including shares repurchased by the Company on the open market or otherwise. 

4.    ELIGIBILITY. 

(a)    Eligibility for Specific Stock Awards. Incentive Stock Options may be granted only to employees of the
Company or a “parent corporation” or “subsidiary corporation” thereof (as such terms are defined in Sections 424(e) and 424(f) of the Code). Stock Awards other than Incentive Stock Options may be granted to Employees, Directors
and Consultants; provided, however, that Stock Awards may not be granted to Employees, Directors and Consultants who are providing Continuous Service only to any “parent” of the Company, as such term is defined in Rule 405, unless
(i) the stock underlying such Stock Awards is treated as “service recipient stock” under Section 409A of the Code (for example, because the Stock Awards are granted pursuant to a Corporate Transaction such as a spin off
transaction), (ii) the Company, in consultation with its legal counsel, has determined that such Stock Awards are otherwise exempt from Section 409A of the Code, or (iii) the Company, in consultation with its legal counsel, has determined
that such Stock Awards comply with the distribution requirements of Section 409A of the Code. 

(b)    Ten Percent Stockholders. A Ten Percent Stockholder will not be granted an Incentive Stock Option
unless the exercise price of such Option is at least 110% of the Fair Market Value on the date of grant and the Option is not exercisable after the expiration of five years from the date of grant. 

5.    PROVISIONS RELATING TO OPTIONS AND
STOCK APPRECIATION RIGHTS. 
 Each Option or SAR will be in such form and will contain such
terms and conditions as the Board deems appropriate. All Options will be separately designated Incentive Stock Options or Nonstatutory Stock Options at the time of grant, and, if certificates are issued, a separate certificate or certificates will
be issued for shares of Common Stock purchased on exercise of each type of Option. If an Option is not specifically designated as an Incentive Stock Option, or if an Option is designated as an Incentive Stock Option but some portion or all of the
Option fails to qualify as an Incentive Stock Option under the applicable rules, then the Option (or portion thereof) will be a Nonstatutory Stock Option. The provisions of separate Options or SARs need not be identical; provided, however,
that each Award Agreement will conform to (through incorporation of provisions hereof by reference in the applicable Award Agreement or otherwise) the substance of each of the following provisions: 

  
 5. 

 (a)    Term. Subject to the provisions of
Section 4(b) regarding Ten Percent Stockholders, no Option or SAR will be exercisable after the expiration of ten years from the date of its grant or such shorter period specified in the Award Agreement. 

(b)    Exercise Price. Subject to the provisions of Section 4(b) regarding Ten Percent Stockholders,
the exercise or strike price of each Option or SAR will be not less than 100% of the Fair Market Value of the Common Stock subject to the Option or SAR on the date the Award is granted. Notwithstanding the foregoing, an Option or SAR may be granted
with an exercise or strike price lower than 100% of the Fair Market Value of the Common Stock subject to the Award if such Award is granted pursuant to an assumption of or substitution for another option or stock appreciation right pursuant to a
Corporate Transaction and in a manner consistent with the provisions of Section 409A of the Code and, if applicable, Section 424(a) of the Code. Each SAR will be denominated in shares of Common Stock equivalents. 

(c)    Procedure for Option Exercise and Payment of Exercise Price for Options. To exercise any outstanding
Option, the Participant must provide notice of exercise to the Stock Plan Administrator in compliance with the provisions of the Stock Option Agreement evidencing such Option. The purchase price of Common Stock acquired pursuant to the exercise of
an Option will be paid, to the extent permitted by applicable law and as determined by the Board in its sole discretion, by any combination of the methods of payment set forth below. The Board has the authority to grant Options that do not permit
all of the following methods of payment (or otherwise restrict the ability to use certain methods) and to grant Options that require the consent of the Company to use a particular method of payment. The permitted methods of payment are as follows:

 (i)    by cash, check, bank draft or money order payable to the Company; 

(ii)    provided that at the time of exercise the Company has established procedures for cashless exercise,
pursuant to a program developed under Regulation T as promulgated by the Federal Reserve Board that, prior to the issuance of the stock subject to the Option, results in either the receipt of cash (or check) by the Company or the receipt of
irrevocable instructions to pay the aggregate exercise price to the Company from the sales proceeds; 

(iii)    provided that at the time of exercise the Company has established procedures for accepting such form of
payment, by delivery to the Company (either by actual delivery or attestation) of already-owned shares of Common Stock that are owned free and clear of any liens, claims, encumbrances or security interests, and that are valued at Fair Market Value
on the date of exercise; provided that (A) such tender would not violate the provisions of any law, regulation or agreement restricting the redemption of the Company’s stock, (B) any certificated shares must be endorsed or accompanied
by an executed assignment separate from certificate, and (C) such shares have been held by the Participant for the minimum period, if any, necessary to avoid adverse accounting treatment as a result of such tender; 

(iv)    provided that at the time of exercise the Company has established procedures for accepting such payment via
a “net exercise,” if an Option is a Nonstatutory Stock Option, by a “net exercise” arrangement pursuant to which the Company will reduce the number of shares of Common Stock issuable upon exercise by the largest whole number of
shares with a 

  
 6. 

 
Fair Market Value that does not exceed the aggregate exercise price; provided, however, that the Company will accept a cash or other payment from the Participant to the extent of any
remaining balance of the aggregate exercise price not satisfied by such reduction in the number of whole shares to be issued. Shares of Common Stock will no longer be subject to an Option and will not be exercisable thereafter to the extent that
(A) shares issuable upon exercise are used to pay the exercise price pursuant to the “net exercise,” (B) shares are delivered to the Participant as a result of such exercise, and (C) shares are withheld to satisfy tax withholding
obligations; or 
 (v)    in any other form of legal consideration that may be acceptable to the Board and
specified in the applicable Award Agreement. 
 (d)    Exercise and Payment of a SAR. To exercise any
outstanding SAR, the Participant must provide written notice of exercise to the Company in compliance with the provisions of the Stock Appreciation Right Agreement evidencing such SAR. The appreciation distribution payable on the exercise of a SAR
will be not greater than an amount equal to the excess of (A) the aggregate Fair Market Value (on the date of the exercise of the SAR) of a number of shares of Common Stock equal to the number of Common Stock equivalents in which the
Participant is vested under such SAR, and with respect to which the Participant is exercising the SAR on such date, over (B) the aggregate strike price of the number of Common Stock equivalents with respect to which the Participant is
exercising the SAR on such date. The appreciation distribution may be paid in Common Stock, in cash, in any combination of the two or in any other form of consideration, as determined by the Board and contained in the Award Agreement evidencing such
SAR. 
 (e)    Transferability of Options and SARs. The Board may, in its sole discretion, impose such
limitations on the transferability of Options and SARs as the Board will determine. In the absence of such a determination by the Board to the contrary, the following restrictions on the transferability of Options and SARs will apply: 

(i)    Restrictions on Transfer. An Option or SAR will not be transferable except by will or by the laws of
descent and distribution (and pursuant to subsections (ii) and (iii) below), and will be exercisable during the lifetime of the Participant only by the Participant; provided, however, that the Board may, in its sole discretion, permit
transfer of the Option or SAR in a manner that is not prohibited by applicable tax and securities laws upon the Participant’s request, including to a trust if the Participant is considered to be the sole beneficial owner (determined under
Section 671 of the Code and applicable state law) while the Option is held in the trust, provided that the Participant and the trustee enter into a transfer and other agreements required by the Company. Except as explicitly provided herein,
neither an Option nor a SAR may be transferred for consideration. 
 (ii)    Domestic Relations Orders.
Notwithstanding the foregoing, subject to the execution of transfer documentation in a format acceptable to the Company, an Option or SAR may be transferred pursuant to the terms of a domestic relations order, marital settlement agreement or other
divorce or separation instrument; provided, however, that if an Option is an Incentive Stock Option, such Option may be deemed to be a Nonstatutory Stock Option as a result of such transfer. 

  
 7. 

 (iii)    Beneficiary Designation. Subject to the approval
of the Board or a duly authorized Officer, a Participant may, by delivering written notice to the Company or to any third party designated by the Company, in a form approved by the Company (or the designated broker), designate a third party who,
upon the death of the Participant, will thereafter be entitled to exercise the Option or SAR and receive the Common Stock or other consideration resulting from such exercise. In the absence of such a designation, upon the death or the Participant,
the executor or administrator of the Participant’s estate or the Participant’s legal heirs will be entitled to exercise the Option or SAR and receive the Common Stock or other consideration resulting from such exercise. However, the
Company may prohibit designation of a beneficiary at any time, including due to any conclusion by the Company that such designation would be inconsistent with the provisions of applicable laws. 

(f)    Vesting Generally. The total number of shares of Common Stock subject to an Option or SAR may vest
and therefore become exercisable in periodic installments that may or may not be equal. The Option or SAR may be subject to such other terms and conditions on the time or times when it may or may not be exercised (which may be based on the
satisfaction of Performance Goals or other criteria) as the Board may deem appropriate. The vesting provisions of individual Options or SARs may vary. The provisions of this Section 5(f) are subject to any Option or SAR provisions governing the
minimum number of shares of Common Stock as to which an Option or SAR may be exercised. 
 (g)    Termination
of Continuous Service. Except as otherwise provided in the applicable Award Agreement or other agreement between the Participant and the Company, if a Participant’s Continuous Service terminates (other than for Cause and other than upon the
Participant’s death or Disability), the Participant may exercise his or her Option or SAR (to the extent that the Participant was entitled to exercise such Award as of the date of termination of Continuous Service) within the period of time
ending on the earlier of (i) the date three months following the termination of the Participant’s Continuous Service (or such longer or shorter period specified in the applicable Award Agreement) and (ii) the expiration of the term of
the Option or SAR as set forth in the Award Agreement. If, after termination of Continuous Service, the Participant does not exercise his or her Option or SAR (as applicable) within the applicable time frame, the Option or SAR will terminate. 

(h)    Automatic Extension of Termination Date. If the exercise of an Option or SAR following the
termination of the Participant’s Continuous Service for any reason other than for Cause and other than upon the Participant’s death of Disability would be prohibited at any time solely because the issuance of shares of Common Stock would
violate the registration requirements under the Securities Act, then the Option or SAR will terminate on the earlier of (i) the expiration of a period equal to the applicable post-termination exercise period after the termination of the
Participant’s Continuous Service during which the exercise of the Option or SAR would not be in violation of such registration requirements, or (ii) the expiration of the term of the Option or SAR as set forth in the applicable Award
Agreement. In addition, unless otherwise provided in a Participant’s Award Agreement, if the immediate sale of any Common Stock received upon exercise of an Option or SAR within the applicable post-termination exercise period following the
termination of the Participant’s Continuous Service (other than for Cause) would violate the Company’s insider trading policy, then the Option or SAR will not terminate prior to (i) the expiration of a period of months equal to the
applicable post-termination exercise period after the 

  
 8. 

 
termination of the Participant’s Continuous Service during which the sale of the Common Stock received upon exercise of the Option or SAR would not be in violation of the Company’s
insider trading policy, or (ii) the expiration of the permitted term of the Option or SAR as set forth in the applicable Award Agreement as determined without giving effect to any termination of Continuous Service. 

(i)    Disability of Participant. Except as otherwise provided in the applicable Award Agreement or other
agreement between the Participant and the Company, if a Participant’s Continuous Service terminates as a result of the Participant’s Disability, the Participant may exercise his or her Option or SAR (to the extent that the Participant was
entitled to exercise such Option or SAR as of the date of termination of Continuous Service), but only within such period of time ending on the earlier of (i) the date 12 months following such termination of Continuous Service (or such longer
or shorter period specified in the Award Agreement) and (ii) the expiration of the term of the Option or SAR as set forth in the Award Agreement. If, after termination of Continuous Service, the Participant does not exercise his or her Option
or SAR within the applicable time frame, the Option or SAR (as applicable) will terminate. 
 (j)    Death of
Participant. Except as otherwise provided in the applicable Award Agreement or other agreement between the Participant and the Company, if (i) a Participant’s Continuous Service terminates as a result of the Participant’s death,
or (ii) the Participant dies within the period (if any) specified in the Award Agreement for exercisability after the termination of the Participant’s Continuous Service for a reason other than death, then the Option or SAR may be
exercised (to the extent the Participant was entitled to exercise such Option or SAR as of the date of death) by the Participant’s estate, by a person who acquired the right to exercise the Option or SAR by bequest or inheritance or by a person
designated to exercise the Option or SAR upon the Participant’s death, but only within the period ending on the earlier of (i) the date 18 months following the date of death (or such longer or shorter period specified in the Award
Agreement) and (ii) the expiration of the term of such Option or SAR as set forth in the Award Agreement. If, after the Participant’s death, the Option or SAR is not exercised within the applicable time frame, the Option or SAR (as
applicable) will terminate. 
 (k)    Termination for Cause. Except as explicitly provided otherwise in a
Participant’s Award Agreement or other individual written agreement between the Company or any Affiliate and the Participant, if a Participant’s Continuous Service is terminated for Cause, the Option or SAR will terminate immediately upon
such Participant’s termination of Continuous Service, and the Participant will be prohibited from exercising his or her Option or SAR from and after the time of such termination of Continuous Service. If a Participant’s Continuous Service
is suspended pending an investigation of the existence of Cause, all of the Participant’s rights under the Option or SAR will also be suspended during the investigation period. 

(l)    Non-Exempt Employees. No Option or SAR, whether or not
vested, granted to an Employee who is a non-exempt employee for purposes of the Fair Labor Standards Act of 1938, as amended, will be first exercisable for any shares of Common Stock until at least six months
following the date of grant of the Option or SAR. Notwithstanding the foregoing, consistent with the provisions of the Worker Economic Opportunity Act, (i) in the event of the Participant’s death or Disability, (ii) upon a Corporate
Transaction in which such Option or SAR is not assumed, continued, or substituted, (iii) upon a Change in Control, or (iv) upon the Participant’s retirement 

  
 9. 

 
(as such term may be defined in the Participant’s Award Agreement or in another applicable agreement or in accordance with the Company’s then current employment policies and
guidelines), any such vested Options and SARs may be exercised earlier than six months following the date of grant. The foregoing provision is intended to operate so that any income derived by a non-exempt
employee in connection with the exercise or vesting of an Option or SAR will be exempt from his or her regular rate of pay. To the extent permitted and/or required for compliance with the U.S. Worker Economic Opportunity Act to ensure that any
income derived by a non-exempt employee in connection with the exercise, vesting or issuance of any shares under any other Stock Award will be exempt from the employee’s regular rate of pay, the
provisions of this Section 5(l) will apply to all Stock Awards and are hereby incorporated by reference into such Stock Award Agreements. 

(m)    Whole Shares. Options and SARs may be exercised only with respect to whole shares of Common Stock.

 (n)    Securities Compliance. No Option or SAR may be exercised unless the shares of Common Stock
issuable upon such exercise are then registered under the Securities Act or, if such shares of Common Stock are not then so registered, the Company has determined that such exercise and issuance would be exempt from the registration requirements of
the Securities Act. The exercise of any Option or SAR also must comply with other applicable laws and regulations governing the Award, and the Participant may not exercise the Award if the Company determines 

6.    PROVISIONS OF STOCK AWARDS OTHER THAN
OPTIONS AND SARS. 
 (a)    Restricted Stock Awards. Each
Restricted Stock Award Agreement will be in such form and will contain such terms and conditions as the Board deems appropriate. To the extent consistent with the Company’s bylaws, at the Board’s election, shares of Common Stock may be
(i) held in book entry form subject to the Company’s instructions until any restrictions relating to the Restricted Stock Award lapse; or (ii) evidenced by a certificate, which certificate will be held in such form and manner as
determined by the Board. The terms and conditions of Restricted Stock Award Agreements may change from time to time, and the terms and conditions of separate Restricted Stock Award Agreements need not be identical. Each Restricted Stock Award
Agreement will conform to (through incorporation of the provisions hereof by reference in the agreement or otherwise) the substance of each of the following provisions: 

(i)    Consideration. A Restricted Stock Award may be awarded in consideration for (A) cash, check,
bank draft or money order payable to the Company, (B) past services to the Company or an Affiliate, or (C) any other form of legal consideration (including future services) that may be acceptable to the Board, in its sole discretion, and
permissible under applicable law. 
 (ii)    Vesting. Shares of Common Stock awarded under the Restricted
Stock Award Agreement may be subject to forfeiture to the Company in accordance with a vesting schedule to be determined by the Board. 

(iii)    Termination of Participant’s Continuous Service. If a Participant’s Continuous Service
terminates, the Company may receive through a forfeiture condition or a repurchase right any or all of the shares of Common Stock held by the Participant that have not vested as of the date of termination of Continuous Service under the terms of the
Restricted Stock Award Agreement. 

  
 10. 

 (iv)    Dividends. A Restricted Stock Award Agreement may
provide that any dividends paid on Restricted Stock will be subject to the same vesting and forfeiture restrictions as apply to the shares subject to the Restricted Stock Award to which they relate. 

(b)    Restricted Stock Unit Awards. Each Restricted Stock Unit Award Agreement will be in such form and
will contain such terms and conditions as the Board deems appropriate. The terms and conditions of Restricted Stock Unit Award Agreements may change from time to time, and the terms and conditions of separate Restricted Stock Unit Award Agreements
need not be identical. Each Restricted Stock Unit Award Agreement will conform to (through incorporation of the provisions hereof by reference in the Agreement or otherwise) the substance of each of the following provisions: 

(i)    Consideration. At the time of grant of a Restricted Stock Unit Award, the Board will determine the
consideration, if any, to be paid by the Participant upon delivery of each share of Common Stock subject to the Restricted Stock Unit Award. The consideration to be paid (if any) by the Participant for each share of Common Stock subject to a
Restricted Stock Unit Award may be paid in any form of legal consideration that may be acceptable to the Board, in its sole discretion, and permissible under applicable law. 

(ii)    Vesting. At the time of the grant of a Restricted Stock Unit Award, the Board may impose such
restrictions on or conditions to the vesting of the Restricted Stock Unit Award as it, in its sole discretion, deems appropriate. 

(iii)    Settlement. A Restricted Stock Unit Award may be settled by the delivery of shares of Common Stock,
their cash equivalent, any combination thereof or in any other form of consideration, as determined by the Board and contained in the Restricted Stock Unit Award Agreement. 

(iv)    Additional Restrictions. At the time of the grant of a Restricted Stock Unit Award, the Board, as it
deems appropriate, may impose such restrictions or conditions that delay the delivery of the shares of Common Stock (or their cash equivalent) subject to a Restricted Stock Unit Award to a time after the vesting of such Restricted Stock Unit Award.

 (v)    Dividend Equivalents. Dividend equivalents may be credited in respect of shares of Common Stock
covered by a Restricted Stock Unit Award, as determined by the Board and contained in the Restricted Stock Unit Award Agreement. At the sole discretion of the Board, such dividend equivalents may be converted into additional shares of Common Stock
covered by the Restricted Stock Unit Award in such manner as determined by the Board. Any additional shares covered by the Restricted Stock Unit Award credited by reason of such dividend equivalents will be subject to all of the same terms and
conditions of the underlying Restricted Stock Unit Award Agreement to which they relate. 

(vi)    Termination of Participant’s Continuous Service. Except as otherwise provided in
the applicable Restricted Stock Unit Award Agreement, such portion of the Restricted Stock Unit Award that has not vested will be forfeited upon the Participant’s termination of Continuous Service. 

  
 11. 

 (vii)    Unsecured Obligation. A Restricted Stock Unit
Award is an unfunded obligation, and as a holder of a vested Restricted Stock Unit Award, a Participant shall be considered an unsecured creditor of the Company with respect to the Company’s obligation, if any, to issue shares pursuant to the
terms of the applicable Award Agreement. A Participant shall not have voting or any other rights as a stockholder of the Company with respect to the shares to be issued pursuant a Restricted Stock Unit Award unless and until such shares are actually
issued. Nothing contained in the Plan or any Restricted Stock Unit Award Agreement, and no action taken pursuant to its provisions, shall create or be construed to create a trust of any kind or a fiduciary relationship between a Participant and the
Company or any other person. 
 (c)    Performance Awards. 

(i)    Performance Stock Awards. A Performance Stock Award is a Stock Award that is payable (including that
may be granted, may vest or may be exercised) contingent upon the attainment during a Performance Period of certain Performance Goals. A Performance Stock Award may, but need not, require the completion of a specified period of Continuous Service.
The length of any Performance Period, the Performance Goals to be achieved during the Performance Period, and the measure of whether and to what degree such Performance Goals have been attained will be conclusively determined by the Board or
Committee, in its sole discretion. In addition, to the extent permitted by applicable law and the applicable Award Agreement, the Board may determine that cash may be used in payment of Performance Stock Awards. 

(ii)    Performance Cash Awards. A Performance Cash Award is a cash award that is payable contingent upon
the attainment during a Performance Period of certain Performance Goals. A Performance Cash Award may, but need not, require the completion of a specified period of Continuous Service. At the time of grant of a Performance Cash Award, the length of
any Performance Period, the Performance Goals to be achieved during the Performance Period, and the measure of whether and to what degree such Performance Goals have been attained will be conclusively determined by the Board or Committee, in its
sole discretion. The Committee may specify the form of payment of Performance Cash Awards, which may be cash or other property, or may provide for a Participant to have the option for his or her Performance Cash Award, or such portion thereof as the
Board may specify, to be paid in whole or in part in cash or other property. 
 (iii)    Board Discretion.
The Board retains the discretion to reduce or eliminate the compensation or economic benefit due upon attainment of Performance Goals and to define the manner of calculating the Performance Criteria it selects to use for a Performance Period. 

(d)    Other Stock Awards. Other forms of Stock Awards valued in whole or in part by reference to, or
otherwise based on, Common Stock, including the appreciation in value thereof (e.g., options or stock rights with an exercise price or strike price less than 100% of the Fair Market Value of the Common Stock at the time of grant) may be granted
either alone or in addition to Stock Awards provided for under Section 5 and the preceding provisions of this Section 6. Subject to the provisions of the Plan, the Board will have sole and complete authority to determine the persons to
whom and the time or times at which such Other Stock Awards will be granted, the number of shares of Common Stock (or the cash equivalent thereof) to be granted pursuant to such Other Stock Awards and all other terms and conditions of such Other
Stock Awards. 

  
 12. 

 7.    COVENANTS OF THE
COMPANY. 
 (a)    Securities Law Compliance. The Company will seek to obtain from each
regulatory commission or agency having jurisdiction over the Plan such authority as may be required to grant Stock Awards and to issue and sell shares of Common Stock upon exercise or vesting of the Stock Awards; provided, however, that this
undertaking will not require the Company to register under the Securities Act or other securities or applicable laws, the Plan, any Stock Award or any Common Stock issued or issuable pursuant to any such Stock Award. If, after reasonable efforts and
at a reasonable cost, the Company is unable to obtain from any such regulatory commission or agency the authority that counsel for the Company deems necessary or advisable for the lawful issuance and sale of Common Stock under the Plan, the Company
will be relieved from any liability for failure to issue and sell Common Stock upon exercise or vesting of such Stock Awards unless and until such authority is obtained. A Participant will not be eligible for the grant of a Stock Award or the
subsequent issuance of Common Stock pursuant to the Stock Award if such grant or issuance would be in violation of any applicable securities law. 

(b)    No Obligation to Notify or Minimize Taxes; No Liability for Taxes. The Company will have no duty or
obligation to any Participant to advise such holder as to the time or manner of exercising such Stock Award. Furthermore, the Company will have no duty or obligation to warn or otherwise advise such holder of a pending termination or expiration of
an Award or a possible period in which the Award may not be exercised. The Company has no duty or obligation to minimize the tax consequences of an Award to the holder of such Award and will not be liable to any holder of a Stock Award for any
adverse tax consequences to such holder in connection with a Stock Award. As a condition to accepting a Stock Award under the Plan, each Participant (i) agrees to not make any claim against the Company, or any of its Officers, Directors,
Employees or Affiliates related to tax liabilities arising from such Stock Award or other Company compensation and (ii) acknowledges that such Participant was advised to consult with his or her own personal tax, financial and other legal
advisors regarding the tax consequences of the Stock Award and has either done so or knowingly and voluntarily declined to do so. Additionally, each Participant acknowledges any Option or SAR granted under the Plan is exempt from Section 409A
of the Code only if the exercise or strike price per share is at least equal to the “fair market value” per share of the Common Stock on the date of grant as determined by the Internal Revenue Service and there is no other impermissible
deferral of compensation associated with the Award. Additionally, as a condition to accepting an Option or SAR granted under the Plan, each Participant agrees not make any claim against the Company, or any of its Officers, Directors, Employees or
Affiliates in the event that the Internal Revenue Service asserts that such exercise price or strike price is less than the “fair market value” of the Common Stock on the date of grant as subsequently determined by the Internal Revenue
Service. 
 8.    TAX WITHHOLDING 

(a)    Withholding Authorization. As a condition to acceptance of any Award under the Plan, a Participant
authorizes withholding from payroll and any other amounts payable to such Participant, and otherwise agree to make adequate provision for (including), any sums required to 

  
 13. 

 
satisfy the federal, state, local and foreign tax withholding obligations of the Company or an Affiliate, if any, which arise in connection with the exercise, vesting or settlement of such Award,
as applicable. Accordingly, a Participant may not be able to exercise an Award even though the Award is vested, and the Company shall have no obligation to issue shares of Common Stock subject to an Award, unless and until such obligations are
satisfied. 
 (b)    Satisfaction of Withholding Obligation. Unless prohibited by the terms of an Award
Agreement, the Company may, in its sole discretion, satisfy any federal, state or local tax withholding obligation relating to an Award by any of the following means or by a combination of such means: (i) causing the Participant to tender a
cash payment; (ii) withholding shares of Common Stock from the shares of Common Stock issued or otherwise issuable to the Participant in connection with the Award; provided, however, that (A) no shares of Common Stock are withheld
with a Fair Market Value exceeding the maximum amount of tax that may be required to be withheld by law (or such other amount as may be permitted while still avoiding classification of the Stock Award as a liability for financial accounting
purposes), and (B) with respect to an Award held by any Participant who is subject to the filing requirements of Section 16 of the Exchange Act, any such share withholding must be specifically approved by the Compensation Committee as the
applicable method that must be used to satisfy the tax withholding obligation or such share withholding procedure must otherwise satisfy the requirements for an exempt transaction under Section 16(b) of the Exchange Act; (iii) withholding
cash from an Award settled in cash; (iv) withholding payment from any amounts otherwise payable to the Participant; (v) by means of a “cashless exercise” pursuant to a program developed under Regulation T as promulgated by the
Federal Reserve Board, or (vi) by such other method as may be set forth in the Award Agreement; provided, however, that 

(c)    Withholding Indemnification. As a condition to accepting an Award under the Plan, in the event that
the amount of the Company’s withholding obligation in connection with such Award was greater than the amount actually withheld by the Company, each Participant agrees to indemnify and hold the Company harmless from any failure by the Company to
withhold the proper amount. 
 9.    MISCELLANEOUS. 

(a)    Use of Proceeds from Sales of Common Stock. Proceeds from the sale of shares of Common Stock pursuant
to Stock Awards will constitute general funds of the Company. 
 (b)    Corporate Action Constituting Grant of
Awards. Corporate action constituting a grant by the Company of an Award to any Participant will be deemed completed as of the date of such corporate action, unless otherwise determined by the Board, regardless of when the instrument,
certificate, or letter evidencing the Award is communicated to, or actually received or accepted by, the Participant. In the event that the corporate records (e.g., Board consents, resolutions or minutes) documenting the corporate action approving
the grant contain terms (e.g., exercise price, vesting schedule or number of shares) that are inconsistent with those in the Award Agreement or related grant documents as a result of a clerical error in the papering of the Award Agreement or related
grant documents, the corporate records will control and the Participant will have no legally binding right to the incorrect term in the Award Agreement or related grant documents. 

  
 14. 

 (c)    Stockholder Rights. No Participant will be deemed
to be the holder of, or to have any of the rights of a holder with respect to, any shares of Common Stock subject to an Award unless and until (i) such Participant has satisfied all requirements for exercise of, or the issuance of shares of
Common Stock under, the Award pursuant to its terms, and (ii) the issuance of the Common Stock subject to such Award has been entered into the books and records of the Company. 

(d)    No Employment or Other Service Rights. Nothing in the Plan, any Award Agreement or any other
instrument executed thereunder or in connection with any Award granted pursuant thereto will confer upon any Participant any right to continue to serve the Company or an Affiliate in the capacity in effect at the time the Award was granted or will
affect the right of the Company or an Affiliate to terminate (i) the employment of an Employee with or without notice and with or without cause, (ii) the service of a Consultant pursuant to the terms of such Consultant’s agreement
with the Company or an Affiliate, or (iii) the service of a Director pursuant to the bylaws of the Company or an Affiliate, and any applicable provisions of the corporate law of the state or foreign jurisdiction in which the Company or the
Affiliate is incorporated, as the case may be. Furthermore, to the extent the Company is not the employer of a Participant, the grant of an Award will be not establish an employment or other service relationship between the Company and the
Participant. Further, nothing in the Plan, any Award Agreement or any other instrument executed thereunder or in connection with any Award will constitute any promise or commitment by the Company or an Affiliate regarding the fact or nature of
future positions, future work assignments, future compensation or any other term or condition of employment or service or confer any right or benefit under the Award or the Plan unless such right or benefit has specifically accrued under the terms
of the Award Agreement and/or Plan. 
 (e)    Change in Time Commitment. In the event a Participant’s
regular level of time commitment in the performance of his or her services for the Company and any Affiliates is reduced (for example, and without limitation, if the Participant is an Employee of the Company and the Employee has a change in status
from a full-time Employee to a part-time Employee or takes an extended leave of absence) after the date of grant of any Award to the Participant, the Board has the right in its sole discretion to (x) make a corresponding reduction in the number
of shares or cash amount subject to any portion of such Award that is scheduled to vest or become payable after the date of such change in time commitment, and (y) in lieu of or in combination with such a reduction, extend the vesting or
payment schedule applicable to such Award. In the event of any such reduction, the Participant will have no right with respect to any portion of the Award that is so reduced or extended. 

(f)    Incentive Stock Option $100,000 Limitation. To the extent that the aggregate Fair Market Value
(determined at the time of grant) of Common Stock with respect to which Incentive Stock Options are exercisable for the first time by any Optionholder during any calendar year (under all plans of the Company and any Affiliates) exceeds $100,000 (or
such other limit established in the Code) or otherwise does not comply with the rules governing Incentive Stock Options, the Options or portions thereof that exceed such limit (according to the order in which they were granted) or otherwise do not
comply with such rules will be treated as Nonstatutory Stock Options, notwithstanding any contrary provision of the applicable Option Agreement(s). 

  
 15. 

 (g)    Execution of Additional Documents. As a condition
to accepting an Award under the Plan, the Participant agrees to execute any additional documents or instruments necessary or desirable, as determined in the Company’s sole discretion, to carry out the purposes or intent of the Award, or
facilitate compliance with securities and/or other regulatory requirements, in each case at the Company’s request. 

(h)    Electronic Delivery and Participation. Any reference herein or in an Award Agreement to a
“written” agreement or document will include any agreement or document delivered electronically, filed publicly at www.sec.gov (or any successor website thereto) or posted on the Company’s intranet (or other shared electronic medium
controlled by the Company to which the Participant has access). By accepting any Award the Participant consents to receive documents by electronic delivery and, if requested by the Company, to participate in the Plan through an on-line electronic system established and maintained by the Plan Administrator or another third party selected by the Plan Administrator. The form of delivery of any Common Stock (e.g., a stock certificate or
electronic entry evidencing such shares) shall be determined by the Company. 
 (i)    Deferrals. To the
extent permitted by applicable law, the Board, in its sole discretion, may determine that the delivery of Common Stock or the payment of cash, upon the exercise, vesting or settlement of all or a portion of any Award may be deferred and may
establish programs and procedures for deferral elections to be made by Participants. Deferrals by Participants will be made in accordance with Section 409A of the Code. 

(j)    Transfer or Assignment of Awards; Issued Shares. Except as expressly provided in the Plan or the form
of Award Agreement, Awards granted under the Plan may not be transferred or assigned by the Participant. After the vested shares subject to an Award have been issued, or in the case of Restricted Stock and similar awards, after the issued shares
have vested, the holder of such shares is free to assign, hypothecate, donate, encumber or otherwise dispose of any interest in such shares provided that any such actions are in compliance with the provisions herein, the terms of the Trading Policy
and applicable securities laws. 
 (k)    Clawback/Recovery. All Awards granted under the Plan will be
subject to recoupment in accordance with any clawback policy that the Company is required to adopt pursuant to the listing standards of any national securities exchange or association on which the Company’s securities are listed or as is
otherwise required by the Dodd-Frank Wall Street Reform and Consumer Protection Act or other applicable law. In addition, the Board may impose such other clawback, recovery or recoupment provisions in an Award Agreement as the Board determines
necessary or appropriate, including but not limited to a reacquisition right in respect of previously acquired shares of Common Stock or other cash or property upon the occurrence of Cause. No recovery of compensation under such a clawback policy
will be an event giving rise to a right to voluntary terminate employment upon a “resignation for good reason,” or for a “constructive termination” or any similar term under any plan of or agreement with the Company. 

(l)    Securities Compliance. A Participant will not be issued any shares in respect of an Award unless
either (i) the shares are registered under the Securities Act; or (ii) the Company has determined that such issuance would be exempt from the registration requirements of the Securities Act. Each Award also must comply with other
applicable laws and regulations governing the Award, and a Participant will not receive such shares if the Company determines that such receipt would not be in material compliance with such laws and regulations. 

  
 16. 

 (m)    Compliance with Section 409A of the
Code. Unless otherwise expressly provided for in an Award Agreement, the Plan and Award Agreements will be interpreted to the greatest extent possible in a manner that makes the Plan and the Awards granted hereunder exempt from Section 409A
of the Code, and, to the extent not so exempt, in compliance with Section 409A of the Code. If the Board determines that any Award granted hereunder is not exempt from and is therefore subject to Section 409A of the Code, the Award
Agreement evidencing such Award will incorporate the terms and conditions necessary to avoid the consequences specified in Section 409A(a)(1) of the Code, and to the extent an Award Agreement is silent on terms necessary for compliance, such
terms are hereby incorporated by reference into the Award Agreement. Notwithstanding anything to the contrary in this Plan (and unless the Award Agreement specifically provides otherwise), if the shares of Common Stock are publicly traded, and if a
Participant holding an Award that constitutes “deferred compensation” under Section 409A of the Code is a “specified employee” for purposes of Section 409A of the Code, no distribution or payment of any amount that is
due because of a “separation from service” (as defined in Section 409A of the Code without regard to alternative definitions thereunder) will be issued or paid before the date that is six months following the date of such
Participant’s “separation from service” or, if earlier, the date of the Participant’s death, unless such distribution or payment can be made in a manner that complies with Section 409A of the Code, and any amounts so
deferred will be paid in a lump sum on the day after such six month period elapses, with the balance paid thereafter on the original schedule. 

10.    ADJUSTMENTS UPON CHANGES IN COMMON
STOCK; OTHER CORPORATE EVENTS. 

(a)    Capitalization Adjustments. 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 maximum number of securities that may be issued pursuant to the exercise of Incentive Stock Options pursuant to Section 3(d), and (iv) the class(es) and number of securities and
price per share of stock subject to outstanding Stock Awards. The Board will make such adjustments, and its determination will be final, binding and conclusive. Notwithstanding the provisions of this Section 10(a), no fractional shares or
rights for fractional shares of Common Stock shall be created pursuant to this Section 10(a). The Board shall, in its discretion, determine an equivalent benefit for any fractional shares or fractional shares that might be created by the
adjustments referred to in this Section 10(a). 
 (b)    Dissolution or Liquidation. Except as
otherwise provided in the Stock Award Agreement, in the event of a dissolution or liquidation of the Company, all outstanding Stock Awards (other than Stock Awards consisting of vested and outstanding shares of Common Stock not subject to a
forfeiture condition or the Company’s right of repurchase) will terminate immediately prior to the completion of such dissolution or liquidation, and the shares of Common Stock subject to the Company’s repurchase rights or subject to a
forfeiture condition may be repurchased or reacquired by the Company notwithstanding the fact that the holder of such Stock Award is providing Continuous Service; provided, however, that the Board may, in its sole

  
 17. 

 
discretion, cause some or all Stock Awards to become fully vested, exercisable and/or no longer subject to repurchase or forfeiture (to the extent such Stock Awards have not previously expired or
terminated) before the dissolution or liquidation is completed but contingent on its completion. 

(c)    Corporate Transaction. The following provisions will apply to Stock Awards in the event of a
Corporate Transaction unless otherwise provided in the Stock Award Agreement or any other written agreement between the Company or any Affiliate and the Participant or unless otherwise expressly provided by the Board at the time of grant of a Stock
Award. In the event of a Corporate Transaction, then, notwithstanding any other provision of the Plan, the Board will take one or more of the following actions with respect to Stock Awards, contingent upon the closing or completion of the Corporate
Transaction: 
 (i)    arrange for the surviving corporation or acquiring corporation (or the surviving or
acquiring corporation’s parent company) to assume or continue the Stock Award or to substitute a similar stock award for the Stock Award (including, but not limited to, an award to acquire the same consideration paid to the stockholders of the
Company pursuant to the Corporate Transaction); 
 (ii)    arrange for the assignment of any reacquisition or
repurchase rights held by the Company in respect of Common Stock issued pursuant to the Stock Award to the surviving corporation or acquiring corporation (or the surviving or acquiring corporation’s parent company); 

(iii)    accelerate the vesting, in whole or in part, of the Stock Award (and, if applicable, the time at which the
Stock Award may be exercised) to a date prior to the effective time of such Corporate Transaction as the Board determines (or, if the Board does not determine such a date, to the date that is five days prior to the effective date of the Corporate
Transaction), which exercise is contingent upon the effectiveness of such Corporate Transaction with such Stock Award terminating if not exercised (if applicable) at or prior to the effective time of the Corporate Transaction in accordance with the
exercise procedures determined by the Board; 
 (iv)    arrange for the lapse, in whole or in part, of any
reacquisition or repurchase rights held by the Company with respect to the Stock Award; and 
 (v)    cancel or
arrange for the cancellation of the Stock Award, to the extent not vested or not exercised prior to the effective time of the Corporate Transaction, in exchange for a payment, if any, in such form as may be determined by the Board, equal to the
excess, if any, of (A), the per share amount (or value of property per share) payable to holders of Common Stock in connection with the Corporate Transaction, over (B) the per share exercise price under the applicable Award, multiplied by the
number of shares subject to the Stock Award. Such payment may be subject to vesting based on the Participant’s Continuous Service, provided that the vesting schedule shall be no less favorable to the Participant than the schedule under which
the Stock Award would have become vested and/or exercisable. In addition, any escrow, holdback, earnout or similar provisions in the definitive agreement for the Corporate Transaction may apply to such payment to the holder of the Stock Award to the
same extent and in the same manner as such provisions apply to the holders of Common Stock. For clarity, this payment may be $0 if the amount per share (or value of property per share) payable to the holders of the Common Stock is equal to or less
than the per share exercise price of the Stock Award. 

  
 18. 

 The Board need not take the same action or actions with respect to all Stock Awards or portions thereof or
with respect to all Participants. The Board may take different actions with respect to the vested and unvested portions of a Stock Award. 

(d)    Change in Control. A Stock Award may be subject to additional acceleration of vesting and
exercisability upon or after a Change in Control as may be provided in the Stock Award Agreement for such Stock Award or as may be provided in any other written agreement between the Company or any Affiliate and the Participant, but in the absence
of such provision, no such acceleration will occur. 
 11.    SEVERABILITY. If all or any part of
the Plan or any Award Agreement is declared by any court or governmental authority to be unlawful or invalid, such unlawfulness or invalidity shall not invalidate any portion of the Plan or such Award Agreement not declared to be unlawful or
invalid. Any Section of the Plan or any Award Agreement (or part of such a Section) so declared to be unlawful or invalid shall, if possible, be construed in a manner which will give effect to the terms of such Section or part of a Section to the
fullest extent possible while remaining lawful and valid. 
 12.    TERMINATION OR
SUSPENSION OF THE PLAN. The Board may suspend or terminate the Plan at any time. No Incentive Stock Option will be granted after the tenth anniversary of the earlier of (i) the
Adoption Date, or (ii) the date the Plan is approved by the stockholders of the Company. No Awards may be granted under the Plan while the Plan is suspended or after it is terminated. Suspension or termination of the Plan will not impair rights
and obligations under any Award granted while the Plan is in effect except with the written consent of the affected Participant or as otherwise permitted in the Plan. 

13.    EFFECTIVE DATE OF THE PLAN. 

The Plan will come into existence on the Adoption Date; provided, however, no Award may be granted prior to the IPO Date (that is, the
Effective Date). In addition, no Stock Award will be exercised (or, in the case of a Restricted Stock Award, Restricted Stock Unit Award, Performance Stock Award, or Other Stock Award, will be granted) and no Performance Cash Award will be settled
unless and until the Plan has been approved by the stockholders of the Company, which approval will be within 12 months after the Adoption Date. 

14.    CHOICE OF LAW. 

The laws of the State of Delaware will govern all questions concerning the construction, validity and interpretation of this Plan, without
regard to that state’s conflict of laws rules. 
 15.    DEFINITIONS. As used in the Plan, the
following definitions will apply to the capitalized terms indicated below: 
 (a)    “Adoption
Date” means the date the Plan is adopted by the Board. 
 (b)    “Affiliate”
means, at the time of determination, any “parent” or “subsidiary” of the Company as such terms are defined in Rule 405. The Board will have the authority to determine the time or times at which “parent” or
“subsidiary” status is determined within the foregoing definition. 

  
 19. 

 (c)    “Award” means a Stock Award or a
Performance Cash Award. 
 (d)    “Award Agreement” means a written agreement between the
Company and a Participant evidencing the terms and conditions of an Award. 

(e)    “Board” means the Board of Directors of the Company. 

(f)    “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 Stock Award after the Effective Date 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, reverse stock split, liquidating dividend, combination of shares, exchange of shares, change in corporate structure or any similar equity
restructuring transaction, as that term is used in Statement of 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. 

(g)    “Cause” will have the meaning ascribed to such term in any written
agreement between the Participant and the Company defining such term and, in the absence of such agreement, such term means, with respect to a Participant, the occurrence of any of the following events: (i) such Participant’s commission,
indictment or conviction of, or plea of no contest with respect to, any felony or crime involving dishonesty or moral turpitude; (ii) such Participant’s failure to satisfactorily perform his or her job duties as assigned by the Board or
the officers of the Company, inability to meet documented performance goals, willful neglect of his or her duties, or refusal or failure to follow the lawful and reasonable directions of the Board or the officers of the Company, provided that the
Company first provides the Participant with written notice of such conduct and 30 days to cure the conduct (if curable), and the Participant has failed to cure such conduct within such 30 day period; (iii) such Participant’s disloyalty,
gross negligence, willful misconduct, dishonesty, fraud or breach of fiduciary duty to the Company; (iv) such Participant’s violation of any rule or policy of the Company, or breach of an employment, consulting or other agreement with the
Company, which could reasonably result in direct or indirect loss, damage or injury to the Company; (v) such Participant’s disclosure of any trade secret or confidential information of the Company; (vi) such Participant’s
commission of an act which could at the discretion of the Company be reasonably deemed to constitute unfair competition with the Company or induce any customer or supplier to breach a contract with the Company; or (vii) such Participant’s
intentional acts on the part of the Participant that have generated material adverse publicity toward or about the Company. Any determination by the Company that the Continuous Service of a Participant was terminated with or without Cause for the
purposes of outstanding Awards held by such Participant will have no effect upon any determination of the rights or obligations of the Company or such Participant for any other purpose. 

  
 20. 

 (h)    “Change in Control” means the
occurrence, in a single transaction or in a series of related transactions, of any one or more of the following events: 

(i)    any Exchange Act Person becomes the Owner, directly or indirectly, of securities of the Company representing
more than 50% of the combined voting power of the Company’s then outstanding securities other than by virtue of a merger, consolidation or similar transaction. Notwithstanding the foregoing, a Change in Control will not be deemed to occur
(A) on account of the acquisition of securities of the Company directly from the Company, (B) on account of the acquisition of securities of the Company by an investor, any affiliate thereof or any other Exchange Act Person that acquires
the Company’s securities in a transaction or series of related transactions the primary purpose of which is to obtain financing for the Company through the issuance of equity securities, (C) on account of the acquisition of securities of
the Company by any individual who is, on the IPO Date, either an executive officer or a Director (either, an “IPO Investor”) and/or any entity in which an IPO Investor has a direct or indirect interest (whether in the form of
voting rights or participation in profits or capital contributions) of more than 50% (collectively, the “IPO Entities”) or on account of the IPO Entities continuing to hold shares that come to represent more than 50% of the
combined voting power of the Company’s then outstanding securities as a result of the conversion of any class of the Company’s securities into another class of the Company’s securities having a different number of votes per share
pursuant to the conversion provisions set forth in the Company’s Amended and Restated Certificate of Incorporation; or (D) solely because the level of Ownership held by any Exchange Act Person (the “Subject Person”)
exceeds the designated percentage threshold of the outstanding voting securities as a result of a repurchase or other acquisition of voting securities by the Company reducing the number of shares outstanding, provided that if a Change in Control
would occur (but for the operation of this sentence) as a result of the acquisition of voting securities by the Company, and after such share acquisition, the Subject Person becomes the Owner of any additional voting securities that, assuming the
repurchase or other acquisition had not occurred, increases the percentage of the then outstanding voting securities Owned by the Subject Person over the designated percentage threshold, then a Change in Control will be deemed to occur; 

(ii)    there is consummated a merger, consolidation or similar transaction involving (directly or indirectly) the
Company and, immediately after the consummation of such merger, consolidation or similar transaction, the stockholders of the Company immediately prior thereto do not Own, directly or indirectly, either (A) outstanding voting securities
representing more than 50% of the combined outstanding voting power of the surviving Entity in such merger, consolidation or similar transaction or (B) more than 50% of the combined outstanding voting power of the parent of the surviving Entity
in such merger, consolidation or similar transaction, in each case in substantially the same proportions as their Ownership of the outstanding voting securities of the Company immediately prior to such transaction; provided, however, that a
merger, consolidation or similar transaction will not constitute a Change in Control under this prong of the definition if the outstanding voting securities representing more than 50% of the combined voting power of the surviving Entity or its
parent are owned by the IPO Entities; 
 (iii)    there is consummated a sale, lease, exclusive license or other
disposition of all or substantially all of the consolidated assets of the Company and its Subsidiaries, other than a sale, lease, license or other disposition of all or substantially all of the consolidated assets of the Company and its Subsidiaries
to an Entity, more than 50% of the combined voting power of the voting securities of which are Owned by stockholders of the Company in substantially the same proportions as their Ownership of the outstanding voting securities of the Company
immediately prior to such sale, lease, license or other disposition; provided, however, that a sale, lease, exclusive 

  
 21. 

 
license or other disposition of all or substantially all of the consolidated assets of the Company and its Subsidiaries will not constitute a Change in Control under this prong of the definition
if the outstanding voting securities representing more than 50% of the combined voting power of the acquiring Entity or its parent are owned by the IPO Entities; or 

(iv)    individuals who, on the date the Plan is adopted by the Board, are members of the Board (the
“Incumbent Board”) cease for any reason to constitute at least a majority of the members of the Board; provided, however, that if the appointment or election (or nomination for election) of any new Board member was
approved or recommended by a majority vote of the members of the Incumbent Board then still in office, such new member will, for purposes of this Plan, be considered as a member of the Incumbent Board. 

Notwithstanding the foregoing or any other provision of this Plan, (A) the term Change in Control will not include a sale of assets,
merger or other transaction effected exclusively for the purpose of changing the domicile of the Company, and (B) the definition of Change in Control (or any analogous term) in an individual written agreement between the Company or any
Affiliate and the Participant will supersede the foregoing definition with respect to Awards subject to such agreement; provided, however, that if no definition of Change in Control or any analogous term is set forth in such an individual
written agreement, the foregoing definition will apply. To the extent required for compliance with Section 409A of the Code, in no event will a Change in Control be deemed to have occurred if such transaction is not also a “change in the
ownership or effective control of” the Company or “a change in the ownership of a substantial portion of the assets of” the Company as determined under Treasury Regulations
Section 1.409A-3(i)(5) (without regard to any alternative definition thereunder). The Board may, in its sole discretion and without a Participant’s consent, amend the definition of “Change in
Control” to conform to the definition of “Change in Control” under Section 409A of the Code, and the regulations thereunder. 

(i)    “Code” means the Internal Revenue Code of 1986, as amended, including any applicable
regulations and guidance thereunder. 
 (j)     “Committee” means a committee of one or
more Directors to whom authority has been delegated by the Board in accordance with Section 2(c). 

(k)    “Common Stock” means, as of the IPO Date, the common stock of the Company, having
one vote per share. 
 (l)    “Company” means
SI-BONE, Inc., a Delaware corporation. 

(m)    “Consultant” means any person, including an advisor, who is (i) engaged by the
Company or an Affiliate to render consulting or advisory services and is compensated for such services, or (ii) serving as a member of the board of directors of an Affiliate and is compensated for such services. However, service solely as a
Director, or payment of a fee for such service, will not cause a Director to be considered a “Consultant” for purposes of the Plan. Notwithstanding the foregoing, a person is treated as a Consultant under this Plan only if a
Form S-8 Registration Statement under the Securities Act is available to register either the offer or the sale of the Company’s securities to such person. 

  
 22. 

 (n)    “Continuous Service” means that
the Participant’s service with the Company or an Affiliate, whether as an Employee, Director or Consultant, is not interrupted or terminated. A change in the capacity in which the Participant renders service to the Company or an Affiliate as an
Employee, Director or Consultant or a change in the Entity for which the Participant renders such service, provided that there is no interruption or termination of the Participant’s service with the Company or an Affiliate, will not terminate a
Participant’s Continuous Service; provided, however, that if the Entity for which a Participant is rendering services ceases to qualify as an Affiliate, as determined by the Board, in its sole discretion, such Participant’s
Continuous Service will be considered to have terminated on the date such Entity ceases to qualify as an Affiliate. For example, a change in status from an Employee of the Company to a Consultant of an Affiliate or to a Director will not constitute
an interruption of Continuous Service. To the extent permitted by law, the Board or the chief executive officer of the Company, in that party’s sole discretion, may determine whether Continuous Service will be considered interrupted in the case
of (i) any leave of absence approved by the Board or chief executive officer, including sick leave, military leave or any other personal leave, or (ii) transfers between the Company, an Affiliate, or their successors. Notwithstanding the
foregoing, a leave of absence will be treated as Continuous Service for purposes of vesting in an Award only to such extent as may be provided in the Company’s leave of absence policy, in the written terms of any leave of absence agreement or
policy applicable to the Participant, or as otherwise required by law. In addition, to the extent required for exemption from or compliance with Section 409A of the Code, the determination of whether there has been a termination of Continuous
Service will be made, and such term will be construed, in a manner that is consistent with the definition of “separation from service” as defined under Treasury Regulation Section 1.409A-1(h)
(without regard to any alternative definition thereunder). 
 (o)    “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. 
 If required for compliance
with Section 409A of the Code, in no event will a Corporate Transaction be deemed to have occurred if such transaction is not also a “change in the ownership or effective control of” the Company or “a change in the ownership of a
substantial portion of the assets of” the Company as determined under Treasury Regulation Section 1.409A-3(i)(5) (without regard to any alternative definition thereunder). 

  
 23. 

 (p)    “Director” means a member of the
Board. 
 (q)    “Disability” means, with respect to a Participant, the inability of such
Participant to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment that can be expected to result in death or that has lasted or can be expected to last for a continuous period of not less
than 12 months, as provided in Sections 22(e)(3) and 409A(a)(2)(c)(i) of the Code, and will be determined by the Board on the basis of such medical evidence as the Board deems warranted under the circumstances. 

(r)     “Effective Date” means the effective date of this Plan, which is the IPO Date. 

(s)    “Employee” means any person employed by the Company or an Affiliate. 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. 

(t)    “Entity” means a corporation, partnership, limited liability company or other
entity. 
 (u)    “Exchange Act” means the Securities Exchange Act of 1934, as amended,
and the rules and regulations promulgated thereunder. 
 (v)    “Exchange Act
Person” means any natural person, Entity or “group” (within the meaning of Section 13(d) or 14(d) of the Exchange Act), except that “Exchange Act Person” will not include (i) the Company or
any Subsidiary of the Company, (ii) any employee benefit plan of the Company or any Subsidiary of the Company or any trustee or other fiduciary holding securities under an employee benefit plan of the Company or any Subsidiary of the Company,
(iii) an underwriter temporarily holding securities pursuant to a registered public offering of such securities, (iv) an Entity Owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as
their Ownership of stock of the Company; or (v) any natural person, Entity or “group” (within the meaning of Section 13(d) or 14(d) of the Exchange Act) that, as of the Effective Date, is the Owner, directly or indirectly, of
securities of the Company representing more than 50% of the combined voting power of the Company’s then outstanding securities. 

(w)    “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, unless otherwise determined by the Board, 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 a source the Board deems reliable. 

(ii)    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 selling price on the last preceding date for which such quotation exists. 

  
 24. 

 (iii)    In the absence of such markets for the Common Stock, the
Fair Market Value will be determined by the Board in good faith and in a manner that complies with Sections 409A and 422 of the Code. 

(x)    “Incentive Stock Option” means an option granted pursuant to Section 5 of the
Plan that is intended to be, and that qualifies as, an “incentive stock option” within the meaning of Section 422 of the Code. 

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

(z)    “Non-Employee Director” means a
Director who either (i) is not a current employee or officer of the Company or an Affiliate, does not receive compensation, either directly or indirectly, from the Company or an Affiliate for services rendered as a consultant or in any capacity
other than as a Director (except for an amount as to which disclosure would not be required under Item 404(a) of Regulation S-K promulgated pursuant to the Securities Act (“Regulation S-K”)), does not possess an interest in any other transaction for which disclosure would be required under Item 404(a) of Regulation S-K, and is not engaged in a
business relationship for which disclosure would be required pursuant to Item 404(b) of Regulation S-K; or (ii) is otherwise considered a “non-employee
director” for purposes of Rule 16b-3. 

(aa)    “Nonstatutory Stock Option” means any option granted pursuant to Section 5 of
the Plan that does not qualify as an Incentive Stock Option. 
 (bb)    “Officer” means a
person who is an officer of the Company within the meaning of Section 16 of the Exchange Act. 

(cc)    “Option” means an Incentive Stock Option or a Nonstatutory Stock Option to purchase
shares of Common Stock granted pursuant to the Plan. 
 (dd)    “Option Agreement” means
a written agreement between the Company and an Optionholder evidencing the terms and conditions of an Option grant. Each Option Agreement will be subject to the terms and conditions of the Plan. 

(ee)    “Optionholder” means a person to whom an Option is granted pursuant to the Plan or,
if applicable, such other person who holds an outstanding Option. 
 (ff)    “Other Stock
Award” means an award based in whole or in part by reference to the Common Stock which is granted pursuant to the terms and conditions of Section 6(d). 

(gg)    “Other Stock Award Agreement” means a written agreement between the
Company and a holder of an Other Stock Award evidencing the terms and conditions of an Other Stock Award grant. Each Other Stock Award Agreement will be subject to the terms and conditions of the Plan. 

(hh)    “Own,” “Owned,”
“Owner,” “Ownership” A person or Entity will be deemed to “Own,” to have “Owned,” to be the “Owner” of, or to have acquired
“Ownership” of securities if 

  
 25. 

 
such person or Entity, directly or indirectly, through any contract, arrangement, understanding, relationship or otherwise, has or shares voting power, which includes the power to vote or to
direct the voting, with respect to such securities. 
 (ii)    “Participant” means a
person to whom an Award is granted pursuant to the Plan or, if applicable, such other person who holds an outstanding Stock Award. 

(jj)    “Performance Cash Award” means an award of cash granted pursuant to the terms and
conditions of Section 6(c)(ii). 
 (kk)    “Performance Criteria” means the one or
more criteria that the Board or Committee (as applicable) will select for purposes of establishing the Performance Goals for a Performance Period. The Performance Criteria that will be used to establish such Performance Goals may be based on any one
of, or combination of, the following as determined by the Board or Committee (as applicable): (1) earnings (including earnings per share and net earnings); (2) earnings before interest, taxes and depreciation; (3) earnings before interest,
taxes, depreciation and amortization; (4) total stockholder return; (5) return on equity or average stockholder’s equity; (6) return on assets, investment, or capital employed; (7) stock price; (8) margin (including
gross margin); (9) income (before or after taxes); (10) operating income; (11) operating income after taxes; (12) pre-tax profit; (13) operating cash flow; (14) sales or revenue targets;
(15) increases in revenue or product revenue; (16) expenses and cost reduction goals; (17) improvement in or attainment of working capital levels; (18) economic value added (or an equivalent metric); (19) market share;
(20) cash flow; (21) cash flow per share; (22) share price performance; (23) debt reduction; (24) customer satisfaction; (25) stockholders’ equity; (26) capital expenditures; (27) debt levels;
(28) operating profit or net operating profit; (29) workforce diversity; (30) growth of net income or operating income; (31) billings; (32) pre-clinical development related compound goals;
(33) financing; (34) regulatory milestones, including approval of a compound; (35) stockholder liquidity; (36) corporate governance and compliance; (37) product commercialization; (38) intellectual property;
(39) personnel matters; (40) progress of internal research or clinical programs; (41) progress of partnered programs; (42) partner satisfaction; (43) budget management; (44) clinical achievements;
(45) completing phases of a clinical study (including the treatment phase); (46) announcing or presenting preliminary or final data from clinical studies; in each case, whether on particular timelines or generally; (47) timely completion
of clinical trials; (48) submission of INDs and NDAs and other regulatory achievements; (49) partner or collaborator achievements; (50) internal controls, including those related to the Sarbanes-Oxley Act of 2002; (51) research
progress, including the development of programs; (52) investor relations, analysts and communication; (53) manufacturing achievements (including obtaining particular yields from manufacturing runs and other measurable objectives related to
process development activities); (54) strategic partnerships or transactions (including in-licensing and out-licensing of intellectual property; (55) establishing
relationships with commercial entities with respect to the marketing, distribution and sale of the Company’s products (including with group purchasing organizations, distributors and other vendors); (56) supply chain achievements (including
establishing relationships with manufacturers or suppliers of active pharmaceutical ingredients and other component materials and manufacturers of the Company’s products); (57) co-development, co-marketing, profit sharing, joint venture or other similar arrangements; and (58) other measures of performance selected by the Board or Committee (as applicable). 

  
 26. 

 (ll)    “Performance Goals” means, for a
Performance Period, the one or more goals established by the Board or Committee (as applicable) for the Performance Period based upon the Performance Criteria. Performance Goals may be based on a Company-wide basis, with respect to one or more
business units, divisions, Affiliates, or business segments, and in either absolute terms or relative to the performance of one or more comparable companies or the performance of one or more relevant indices. Unless specified otherwise by the Board
or Committee (as applicable) (i) in the Award Agreement at the time the Award is granted or (ii) in such other document setting forth the Performance Goals at the time the Performance Goals are established, the Board or Committee (as
applicable) will appropriately make adjustments in the method of calculating the attainment of Performance Goals for a Performance Period as follows: (1) to exclude restructuring and/or other nonrecurring charges; (2) to exclude exchange
rate effects; (3) to exclude the effects of changes to generally accepted accounting principles; (4) to exclude the effects of any statutory adjustments to corporate tax rates; (5) to exclude the effects of items that are
“unusual” in nature or occur “infrequently” as determined under generally accepted accounting principles; (6) to exclude the dilutive effects of acquisitions or joint ventures; (7) to assume that any business divested
by the Company achieved performance objectives at targeted levels during the balance of a Performance Period following such divestiture; (8) to exclude the effect of any change in the outstanding shares of common stock of the Company by reason
of any stock dividend or split, stock repurchase, reorganization, recapitalization, merger, consolidation, spin-off, combination or exchange of shares or other similar corporate change, or any distributions to
common stockholders other than regular cash dividends; (9) to exclude the effects of stock based compensation and the award of bonuses under the Company’s bonus plans; (10) to exclude costs incurred in connection with potential
acquisitions or divestitures that are required to expensed under generally accepted accounting principles; and (11) to exclude the goodwill and intangible asset impairment charges that are required to be recorded under generally accepted
accounting principles. In addition, the Board or Committee (as applicable) retains the discretion to reduce or eliminate the compensation or economic benefit due upon attainment of Performance Goals and to define the manner of calculating the
Performance Criteria it selects to use for such Performance Period. Partial achievement of the specified criteria may result in the payment or vesting corresponding to the degree of achievement as specified in the Stock Award Agreement or the
written terms of a Performance Cash Award. 
 (mm)    “Performance Period” means the
period of time selected by the Board or Committee (as applicable) over which the attainment of one or more Performance Goals will be measured for the purpose of determining a Participant’s right to and the payment of a Stock Award or a
Performance Cash Award. Performance Periods may be of varying and overlapping duration, at the sole discretion of the Board or Committee (as applicable). 

(nn)    “Performance Stock Award” means a Stock Award granted pursuant to the terms and
conditions of Section 6(c)(i). 

  
 27. 

 (oo)    “Plan” means this SI-BONE, Inc. 2018 Equity Incentive Plan. 

(pp)    “Restricted Stock Award” means an award of shares of Common Stock which is granted
pursuant to the terms and conditions of Section 6(a). 
 (qq)    “Restricted Stock Award
Agreement” means a written agreement between the Company and a holder of a Restricted Stock Award evidencing the terms and conditions of a Restricted Stock Award grant. Each Restricted Stock Award Agreement will be subject to the terms
and conditions of the Plan. 
 (rr)    “Restricted Stock Unit Award” means
a right to receive shares of Common Stock which is granted pursuant to the terms and conditions of Section 6(b). 

(ss)    “Restricted Stock Unit Award Agreement” means a written agreement
between the Company and a holder of a Restricted Stock Unit Award evidencing the terms and conditions of a Restricted Stock Unit Award grant. Each Restricted Stock Unit Award Agreement will be subject to the terms and conditions of the Plan. 

(tt)    “Rule 16b-3” means Rule 16b-3 promulgated under the Exchange Act or any successor to Rule 16b-3, as in effect from time to time. 

(uu)    “Rule 405” means Rule 405 promulgated under the Securities Act. 

(vv)    “Securities Act” means the Securities Act of 1933, as amended. 

(ww)    “Stock Appreciation Right” or “SAR” means a
right to receive the appreciation on Common Stock that is granted pursuant to the terms and conditions of Section 5. 

(xx)    “Stock Appreciation Right Agreement” means a written agreement between the Company
and a holder of a Stock Appreciation Right evidencing the terms and conditions of a Stock Appreciation Right grant. Each Stock Appreciation Right Agreement will be subject to the terms and conditions of the Plan. 

(yy)    “Stock Award” means any right to receive Common Stock granted under the Plan,
including an Incentive Stock Option, a Nonstatutory Stock Option, a Restricted Stock Award, a Restricted Stock Unit Award, a Stock Appreciation Right, a Performance Stock Award or any Other Stock Award. 

(zz)    “Stock Award Agreement” means a written agreement between the Company and a
Participant evidencing the terms and conditions of a Stock Award grant. Each Stock Award Agreement will be subject to the terms and conditions of the Plan. 

(aaa)    “Subsidiary” means, with respect to the Company, (i) any corporation of which
more than 50% of the outstanding capital stock having ordinary voting power to elect a majority of the board of directors of such corporation (irrespective of whether, at the time, stock of any other class or classes of such corporation will have or
might have voting power by reason of the happening of any contingency) is at the time, directly or indirectly, Owned by the Company, and (ii) any partnership, limited liability company or other entity in which the Company has a direct or
indirect interest (whether in the form of voting or participation in profits or capital contribution) of more than 50%. 

  
 28. 

 (bbb)    “Ten Percent Stockholder” means
a person who Owns (or is deemed to Own pursuant to Section 424(d) of the Code) stock possessing more than 10% of the total combined voting power of all classes of stock of the Company or any Affiliate. 

  
 29.

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