EX-10.1





 Exhibit 10.1 

Execution Version 

FOURTH AMENDED AND RESTATED INVESTORS’ RIGHTS AGREEMENT 

THIS FOURTH AMENDED AND RESTATED INVESTORS’ RIGHTS AGREEMENT (this “Agreement”) is made as of the 28th day of December, 2015, by and among Datadog, Inc., a Delaware corporation (the “Company”), and each of the investors listed on Schedule A hereto, each of which is referred to
in this Agreement as an “Investor.” 
 RECITALS 

WHEREAS, certain of the Investors (the “Existing Investors”) hold shares of the Company’s Seed Preferred Stock
(as defined below), Series A Preferred Stock (as defined below), Series B Preferred Stock (as defined below), and Series C Preferred Stock (as defined below) and possess certain rights pursuant to a Third Amended and Restated Investors’ Rights
Agreement dated as of January 22, 2015, between the Company and such Investors (the “Prior Agreement”); 

WHEREAS, concurrently with the execution of this Agreement, the Company and certain of the Investors are entering into a Series D
Preferred Stock Purchase Agreement (the “Purchase Agreement”) providing for the sale of shares of the Company’s Series D Preferred Stock (as defined below); 

WHEREAS, the Company and the undersigned desire to induce certain of the Investors to enter into the Purchase Agreement by amending and
restating the Prior Agreement to provide the Investors with rights and privileges as set forth herein; and 
 WHEREAS, the
undersigned constitute the required signatories to amend the Prior Agreement as set forth herein. 
 NOW, THEREFORE, the Prior
Agreement is hereby amended and restated in its entirety, and the parties hereto hereby agree, as follows: 

1.    Definitions. For purposes of this Agreement: 

1.1 “Affiliate” means, with respect to any specified Person, any other Person who, directly or indirectly, controls, is
controlled by, or is under common control with such Person, including without limitation any general partner, managing member, officer or director of such Person or any venture capital fund or investment vehicle now or hereafter existing that is
controlled by one or more general partners or managing members of, or shares or is advised by the same management or advisory company as, such Person. 

1.2 “Board” means the Board of Directors of the Company. 

1.3 “Certificate of Incorporation” means the Company’s Sixth Amended and Restated Certificate of Incorporation, as the
same may be further amended or restated from time to time. 
 1.4 “Common Stock” means shares of the Company’s common
stock, par value $0.00001 per share. 












 1.5 “Conversion Shares” means shares of Common Stock issued or issuable
upon the conversion of Preferred Stock. 
 1.6 “Damages” means any loss, damage, or liability (joint or several) to which a
party hereto may become subject under the Securities Act, the Exchange Act, or other federal or state law, insofar as such loss, damage, or liability (or any action in respect thereof) arises out of or is based upon (i) any untrue statement or
alleged untrue statement of a material fact contained in any registration statement of the Company, including any preliminary prospectus or final prospectus contained therein or any amendments or supplements thereto; (ii) an omission or alleged
omission to state therein a material fact required to be stated therein, or necessary to make the statements therein not misleading; or (iii) any violation or alleged violation by the indemnifying party (or any of its agents or Affiliates) of
the Securities Act, the Exchange Act, any state securities law, or any rule or regulation promulgated under the Securities Act, the Exchange Act, or any state securities law. 

1.7 “Derivative Securities” means any securities or rights convertible into, or exercisable or exchangeable for (in each case,
directly or indirectly), Common Stock, including options and warrants. 
 1.8 “Exchange Act” means the Securities Exchange
Act of 1934, as amended, and the rules and regulations promulgated thereunder. 
 1.9 “Excluded Registration” means
(i) a registration relating to the sale of securities to employees of the Company or a subsidiary pursuant to a stock option, stock purchase, or similar plan; (ii) a registration relating to an SEC Rule 145 transaction; (iii) a
registration on any form that does not include substantially the same information as would be required to be included in a registration statement covering the sale of the Registrable Securities; or (iv) a registration in which the only Common
Stock being registered is Common Stock issuable upon conversion of debt securities that are also being registered. 
 1.10 “Form S-1” means such form under the Securities Act as in effect on the date hereof or any successor registration form under the Securities Act subsequently adopted by the SEC. 

1.11 “Form S-3” means such form under the Securities Act as in effect on the date
hereof or any registration form under the Securities Act subsequently adopted by the SEC that permits incorporation of substantial information by reference to other documents filed by the Company with the SEC. 

1.12 “GAAP” means generally accepted accounting principles in the United States. 

1.13 “Holder” means any holder of Registrable Securities who is a party to this Agreement. 

1.14 “Immediate Family Member” means a 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, including adoptive relationships, of a natural person referred to herein. 

  
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 1.15 “Initiating Holders” means, collectively, Holders who properly
initiate a registration request under this Agreement. 
 1.16 “IPO” means the Company’s first underwritten public
offering of its Common Stock under the Securities Act. 
 1.17 “Key Employee” means Alexis
Le-Quoc and Olivier Pomel. 
 1.18 “Major Investor” means any Investor that
individually or together with such Investor’s Affiliates, holds at least 300,000 shares of Registrable Securities (as adjusted for any stock split, stock dividend, combination, or other recapitalization or reclassification effected after the
date hereof). 
 1.19 “New Securities” means, collectively, equity securities of the Company, whether or not currently
authorized, as well as rights, options, or warrants to purchase such equity securities, or securities of any type whatsoever that are, or may become, convertible or exchangeable into or exercisable for such equity securities. 

1.20 “Person” means any individual, corporation, partnership, trust, limited liability company, association or other entity.

 1.21 “Preferred Directors” mean, collectively, the Series A Directors and the Series B Director. 

1.22 “Preferred Stock” means, collectively, shares of Seed Preferred Stock, shares of Series A Preferred Stock, shares of
Series B Preferred Stock, shares of Series C Preferred Stock, shares of Series D Preferred Stock, and shares of any other series of Preferred Stock of the Company issued from time to time. 

1.23 “Registrable Securities” means (i) Conversion Shares; (ii) any Common Stock, or any Common Stock issued or
issuable (directly or indirectly) upon conversion and/or exercise of any other securities of the Company, acquired by the Investors after the date hereof; and (iii) any Common Stock issued as (or issuable upon the conversion or exercise of any
warrant, right, or other security that is issued as) a dividend or other distribution with respect to, or in exchange for or in replacement of, the shares referenced in clauses (i) and (ii) above; excluding in all cases, however,
any Registrable Securities sold by a Person in a transaction in which the applicable rights under this Agreement are not assigned pursuant to Subsection 6.1(a), and excluding for purposes of Section 2 any shares for
which registration rights have terminated pursuant to Subsection 2.13 of this Agreement. 
 1.24 “Registrable Securities then
outstanding” means the number of shares determined by adding the number of shares of outstanding Common Stock that are Registrable Securities and the number of shares of Common Stock issuable (directly or indirectly) pursuant to then
exercisable and/or convertible securities that are Registrable Securities. 

  
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 1.25 “Restricted Securities” means the securities of the Company required
to bear the legend set forth in Subsection 2.12(b) hereof. 
 1.26 “Seed Preferred Stock” means shares of the
Company’s Seed Preferred Stock, par value $0.00001 per share. 
 1.27 “SEC” means the Securities and Exchange
Commission. 
 1.28 “SEC Rule 144” means Rule 144 promulgated by the SEC under the Securities Act. 

1.29 “SEC Rule 145” means Rule 145 promulgated by the SEC under the Securities Act. 

1.30 “Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations promulgated thereunder. 

1.31 “Selling Expenses” means all underwriting discounts, selling commissions, and fees and disbursements of counsel for any
Holder, except for the fees and disbursements of the Selling Holder Counsel borne and paid by the Company as provided in Subsection 2.6. 

1.32 “Series A Directors” means, collectively, the directors of the Company that the holders of record of the Series A
Preferred Stock are entitled to elect pursuant to the Certificate of Incorporation. 
 1.33 “Series A Preferred Stock” mean
shares of the Company’s Series A Preferred Stock, par value $0.00001 per share. 
 1.34 “Series B Director” means the
director of the Company that the holders of record of the Series B Preferred Stock are entitled to elect pursuant to the Certificate of Incorporation. 

1.35 “Series B Preferred Stock” means shares of the Company’s Series B Preferred Stock, par value $0.00001 per share.

 1.36 “Series C Preferred Stock” means shares of the Company’s Series C Preferred Stock, par value $0.00001 per
share. 
 1.37 “Series D Preferred Stock” means shares of the Company’s Series D Preferred Stock, par value $0.00001
per share. 
 2.    Registration Rights. The Company covenants and agrees as follows: 

2.1    Demand Registration. 

(a)    Form S-1 Demand. If at any time after the earlier of (i) three
(3) years after the date of this Agreement or (ii) one hundred eighty (180) days after the effective 

  
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date of the registration statement for the IPO, the Company receives a request from Holders of at least a majority of the Registrable Securities then outstanding that the Company file a Form S-1 registration statement with respect to at least twenty percent (20%) of the Registrable Securities then outstanding (or a lesser percent if the anticipated aggregate offering price, net of Selling Expenses,
would exceed $10 million), then the Company shall (i) within ten (10) days after the date such request is given, give notice thereof (the “Demand Notice”) to all Holders other than the Initiating Holders; and (ii) as
soon as practicable, and in any event within sixty (60) days after the date such request is given by the Initiating Holders, file a Form S-1 registration statement under the Securities Act covering all
Registrable Securities that the Initiating Holders requested to be registered and any additional Registrable Securities requested to be included in such registration by any other Holders, as specified by notice given by each such Holder to the
Company within twenty (20) days of the date the Demand Notice is given, and in each case, subject to the limitations of Subsection 2.1(c) and Subsection 2.3. 

(b)    Form S-3 Demand. If at any time when it is eligible to use a Form S-3 registration statement, the Company receives a request from Holders of at least twenty percent (20%) of the Registrable Securities then outstanding that the Company file a Form
S-3 registration statement with respect to outstanding Registrable Securities of such Holders having an anticipated aggregate offering price, net of Selling Expenses, of at least $1 million, then the
Company shall (i) within ten (10) days after the date such request is given, give a Demand Notice to all Holders other than the Initiating Holders; and (ii) as soon as practicable, and in any event within forty-five (45) days
after the date such request is given by the Initiating Holders, file a Form S-3 registration statement under the Securities Act covering all Registrable Securities requested to be included in such registration
by any other Holders, as specified by notice given by each such Holder to the Company within twenty (20) days of the date the Demand Notice is given, and in each case, subject to the limitations of Subsection 2.1(c) and Subsection
2.3. 
 (c)    Notwithstanding the foregoing obligations, if the Company furnishes to Holders requesting a
registration pursuant to this Subsection 2.1 a certificate signed by the Company’s chief executive officer stating that in the good faith judgment of the Board it would be materially detrimental to the Company and its stockholders for
such registration statement to either become effective or remain effective for as long as such registration statement otherwise would be required to remain effective, because such action would (i) materially interfere with a significant
acquisition, corporate reorganization, or other similar transaction involving the Company; (ii) require premature disclosure of material information that the Company has a bona fide business purpose for preserving as confidential; or
(iii) render the Company unable to comply with requirements under the Securities Act or Exchange Act, then the Company shall have the right to defer taking action with respect to such filing, and any time periods with respect to filing or
effectiveness thereof shall be tolled correspondingly, for a period of not more than one hundred twenty (120) days after the request of the Initiating Holders is given; provided, however, that the Company may not invoke this right
more than once in any twelve (12) month period; and provided further that the Company shall not register any securities for its own account or that of any other stockholder during such one hundred twenty (120) day period.

 (d)    The Company shall not be obligated to effect, or to take any action to effect, any registration pursuant to
Subsection 2.1(a)(i) during the period that is sixty (60) days 

  
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before the Company’s good faith estimate of the date of filing of, and ending on a date that is one hundred eighty (180) days after the effective date of, a Company-initiated
registration, provided, that the Company is actively employing in good faith commercially reasonable efforts to cause such registration statement to become effective; (ii) after the Company has effected two registrations pursuant to
Subsection 2.1(a); or (iii) if the Initiating Holders propose to dispose of shares of Registrable Securities that may be immediately registered on Form S-3 pursuant to a request made pursuant to
Subsection 2.1(b). The Company shall not be obligated to effect, or to take any action to effect, any registration pursuant to Subsection 2.1(b) (i) during the period that is thirty (30) days before the Company’s good
faith estimate of the date of filing of, and ending on a date that is ninety (90) days after the effective date of, a Company-initiated registration, provided, that the Company is actively employing in good faith commercially reasonable efforts
to cause such registration statement to become effective; or (ii) if the Company has effected one registration pursuant to Subsection 2.1(b) within the twelve (12) month period immediately preceding the date of such request. A
registration shall not be counted as “effected” for purposes of this Subsection 2.1(d) until such time as the applicable registration statement has been declared effective by the SEC, unless the Initiating Holders withdraw
their request for such registration, elect not to pay the registration expenses therefor, and forfeit their right to one demand registration statement pursuant to Subsection 2.6, in which case such withdrawn registration statement shall be
counted as “effected” for purposes of this Subsection 2.1(d). 
 2.2    Company
Registration. If the Company proposes to register (including, for this purpose, a registration effected by the Company for stockholders other than the Holders) any of its securities under the Securities Act in connection with the public offering
of such securities solely for cash (other than in an Excluded Registration), the Company shall, at such time, promptly give each Holder notice of such registration. Upon the request of each Holder given within twenty (20) days after such notice
is given by the Company, the Company shall, subject to the provisions of Subsection 2.3, cause to be registered all of the Registrable Securities that each such Holder has requested to be included in such registration. The Company shall have
the right to terminate or withdraw any registration initiated by it under this Subsection 2.2 before the effective date of such registration, whether or not any Holder has elected to include Registrable Securities in such registration. The
expenses (other than Selling Expenses) of such withdrawn registration shall be borne by the Company in accordance with Subsection 2.6. 

2.3    Underwriting Requirements. 

(a)    If, pursuant to Subsection 2.1, the Initiating Holders intend to distribute the Registrable Securities
covered by their request by means of an underwriting, they shall so advise the Company as a part of their request made pursuant to Subsection 2.1, and the Company shall include such information in the Demand Notice. The underwriter(s) will be
selected by the Company and shall be reasonably acceptable to a majority in interest of the Initiating Holders. In such event, the right of any Holder to include such Holder’s Registrable Securities in such registration shall be conditioned
upon such Holder’s participation in such underwriting and the inclusion of such Holder’s Registrable Securities in the underwriting to the extent provided herein. All Holders proposing to distribute their securities through such
underwriting shall (together with the Company as provided in Subsection 2.4(e)) enter into an underwriting agreement in customary form with the underwriter(s) selected for such underwriting. Notwithstanding any other provision of this
Subsection 2.3, if the managing 

  
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underwriter(s) advise(s) the Initiating Holders in writing that marketing factors require a limitation on the number of shares to be underwritten, then the Initiating Holders shall so advise all
Holders of Registrable Securities that otherwise would be underwritten pursuant hereto, and the number of Registrable Securities that may be included in the underwriting shall be allocated among such Holders of Registrable Securities, including the
Initiating Holders, in proportion (as nearly as practicable) to the number of Registrable Securities owned by each Holder or in such other proportion as shall mutually be agreed to by all such selling Holders; provided, however, that
the number of Registrable Securities held by the Holders to be included in such underwriting shall not be reduced unless all other securities are first entirely excluded from the underwriting. To facilitate the allocation of shares in accordance
with the above provisions, the Company or the underwriters may round the number of shares allocated to any Holder to the nearest 100 shares. 

(b) In connection with any offering involving an underwriting of shares of the Company’s capital stock pursuant to Subsection 2.2,
the Company shall not be required to include any of the Holders’ Registrable Securities in such underwriting unless the Holders accept the terms of the underwriting as agreed upon between the Company and its underwriters, and then only in such
quantity as the underwriters in their sole discretion determine will not jeopardize the success of the offering by the Company. If the total number of securities, including Registrable Securities, requested by stockholders to be included in such
offering exceeds the number of securities to be sold (other than by the Company) that the underwriters in their reasonable discretion determine is compatible with the success of the offering, then the Company shall be required to include in the
offering only that number of such securities, including Registrable Securities, which the underwriters and the Company in their sole discretion determine will not jeopardize the success of the offering. If the underwriters determine that less than
all of the Registrable Securities requested to be registered can be included in such offering, then the Registrable Securities that are included in such offering shall be allocated among the selling Holders in proportion (as nearly as practicable
to) the number of Registrable Securities owned by each selling Holder or in such other proportions as shall mutually be agreed to by all such selling Holders. To facilitate the allocation of shares in accordance with the above provisions, the
Company or the underwriters may round the number of shares allocated to any Holder to the nearest 100 shares. Notwithstanding the foregoing, in no event shall (i) the number of Registrable Securities included in the offering be reduced unless
all other securities (other than securities to be sold by the Company) are first entirely excluded from the offering, or (ii) the number of Registrable Securities included in the offering be reduced below fifteen percent (15%) of the total
number of securities included in such offering, unless such offering is the IPO, in which case the selling Holders may be excluded further if the underwriters make the determination described above and no other stockholder’s securities are
included in such offering. For purposes of the provision in this Subsection 2.3(b) concerning apportionment, for any selling Holder that is a partnership, limited liability company, or corporation, the partners, members, retired partners,
retired members, stockholders, and Affiliates of such Holder, or the estates and Immediate Family Members of any such partners, retired partners, members, and retired members and any trusts for the benefit of any of the foregoing Persons, shall be
deemed to be a single “selling Holder,” and any pro rata reduction with respect to such “selling Holder” shall be based upon the aggregate number of Registrable Securities owned by all Persons included in such
“selling Holder,” as defined in this sentence. 

  
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 (c)    For purposes of Subsection 2.1, a registration shall not
be counted as “effected” if, as a result of an exercise of the underwriter’s cutback provisions in Subsection 2.3(a), fewer than fifty percent (50%) of the total number of Registrable Securities that Holders have
requested to be included in such registration statement are actually included. 
 2.4    Obligations of the
Company. Whenever required under this Section 2 to effect the registration of any Registrable Securities, the Company shall, as expeditiously as reasonably possible: 

(a)    prepare and file with the SEC a registration statement with respect to such Registrable Securities and use its
commercially reasonable efforts to cause such registration statement to become effective and, upon the request of the Holders of at least a majority of the Registrable Securities registered thereunder, keep such registration statement effective for
a period of up to one hundred twenty (120) days or, if earlier, until the distribution contemplated in the registration statement has been completed; provided, however, that (i) such one hundred twenty (120) day period
shall be extended for a period of time equal to the period the Holder refrains, at the request of an underwriter of Common Stock (or other securities) of the Company, from selling any securities included in such registration, and (ii) in the
case of any registration of Registrable Securities on Form S-3 that are intended to be offered on a continuous or delayed basis, subject to compliance with applicable SEC rules, such one hundred twenty
(120) day period shall be extended for up to sixty (60) days, if necessary, to keep the registration statement effective until all such Registrable Securities are sold; 

(b)    prepare and file with the SEC such amendments and supplements to such registration statement, and the prospectus
used in connection with such registration statement, as may be necessary to comply with the Securities Act in order to enable the disposition of all securities covered by such registration statement; 

(c)    furnish to the selling Holders such numbers of copies of a prospectus, including a preliminary prospectus, as
required by the Securities Act, and such other documents as the Holders may reasonably request in order to facilitate their disposition of their Registrable Securities; 

(d)    use its commercially reasonable efforts to register and qualify the securities covered by such registration
statement under such other securities or blue-sky laws of such jurisdictions as shall be reasonably requested by the selling Holders; provided that the Company shall not be required to qualify to do
business or to file a general consent to service of process in any such states or jurisdictions, unless the Company is already subject to service in such jurisdiction and except as may be required by the Securities Act; 

(e)    in the event of any underwritten public offering, enter into and perform its obligations under an underwriting
agreement, in usual and customary form, with the underwriter(s) of such offering; 
 (f)    use its commercially
reasonable efforts to cause all such Registrable Securities covered by such registration statement to be listed on a national securities exchange or trading system and each securities exchange and trading system (if any) on which similar securities
issued by the Company are then listed; 

  
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 (g)    provide a transfer agent and registrar for all Registrable
Securities registered pursuant to this Agreement and provide a CUSIP number for all such Registrable Securities, in each case not later than the effective date of such registration; 

(h) promptly make available for inspection by the selling Holders, any managing underwriter(s) participating in any disposition pursuant to
such registration statement, and any attorney or accountant or other agent retained by any such underwriter or selected by the selling Holders, all financial and other records, pertinent corporate documents, and properties of the Company, and cause
the Company’s officers, directors, employees, and independent accountants to supply all information reasonably requested by any such seller, underwriter, attorney, accountant, or agent, in each case, as necessary or advisable to verify the
accuracy of the information in such registration statement and to conduct appropriate due diligence in connection therewith; 

(i)    notify each selling Holder, promptly after the Company receives notice thereof, of the time when such registration
statement has been declared effective or a supplement to any prospectus forming a part of such registration statement has been filed; and 

(j)    after such registration statement becomes effective, notify each selling Holder of any request by the SEC that the
Company amend or supplement such registration statement or prospectus. 
 In addition, the Company shall ensure that, at all times after any
registration statement covering a public offering of securities of the Company under the Securities Act shall have become effective, its insider trading policy shall provide that the Company’s directors may implement a trading program under
Rule 10b5-1 of the Exchange Act. 
 2.5    Furnish Information. It shall
be a condition precedent to the obligations of the Company to take any action pursuant to this Section 2 with respect to the Registrable Securities of any selling Holder that such Holder shall furnish to the Company such
information regarding itself, the Registrable Securities held by it, and the intended method of disposition of such securities as is reasonably required to effect the registration of such Holder’s Registrable Securities. 

2.6    Expenses of Registration. All expenses (other than Selling Expenses) incurred in connection with
registrations, filings, or qualifications pursuant to Section 2, including all registration, filing, and qualification fees; printers’ and accounting fees; fees and disbursements of counsel for the Company; and the
reasonable fees and disbursements, not to exceed $35,000, of one counsel for the selling Holders (“Selling Holder Counsel”), shall be borne and paid by the Company; provided, however, that the Company shall not be
required to pay for any expenses of any registration proceeding begun pursuant to Subsection 2.1 if the registration request is subsequently withdrawn at the request of the Holders of at least a majority of the Registrable Securities to be
registered (in which case all selling Holders shall bear such expenses pro rata based upon the number of Registrable Securities that were to be included in the 

  
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withdrawn registration), unless the Holders of at least a majority of the Registrable Securities agree to forfeit their right to one registration pursuant to Subsection 2.1(a) or
Subsection 2.1(b), as the case may be; provided further that if, at the time of such withdrawal, the Holders have learned of a material adverse change in the condition, business, or prospects of the Company from that known to the
Holders at the time of their request and have withdrawn the request with reasonable promptness after learning of such information, then the Holders shall not be required to pay any of such expenses and shall not forfeit their right to one
registration pursuant to Subsection 2.1(a) or Subsection 2.1(b). All Selling Expenses relating to Registrable Securities registered pursuant to this Section 2 shall be borne and paid by the Holders pro rata on
the basis of the number of Registrable Securities registered on their behalf. 
 2.7    Delay of Registration. No
Holder shall have any right to obtain or seek an injunction restraining or otherwise delaying any registration pursuant to this Agreement as the result of any controversy that might arise with respect to the interpretation or implementation of this
Section 2. 
 2.8    Indemnification. If any Registrable Securities are included in a
registration statement: 
 (a)    To the extent permitted by law, the Company will indemnify and hold harmless each
selling Holder, and the partners, members, officers, directors, and stockholders of each such Holder; legal counsel and accountants for each such Holder; any underwriter (as defined in the Securities Act) for each such Holder; and each Person, if
any, who controls such Holder or underwriter within the meaning of the Securities Act or the Exchange Act, against any Damages, and the Company will pay to each such Holder, underwriter, controlling Person, or other aforementioned Person any legal
or other expenses reasonably incurred thereby in connection with investigating or defending any claim or proceeding from which Damages may result, as such expenses are incurred; provided, however, that the indemnity agreement contained in this
Subsection 2.8(a) shall not apply to amounts paid in settlement of any such claim or proceeding if such settlement is effected without the consent of the Company, which consent shall not be unreasonably withheld, nor shall the Company be
liable for any Damages to the extent that they arise out of or are based upon actions or omissions made in reliance upon and in conformity with written information furnished by or on behalf of any such Holder, underwriter, controlling Person, or
other aforementioned Person expressly for use in connection with such registration. 
 (b)    To the extent permitted by
law, each selling Holder, severally and not jointly, will indemnify and hold harmless the Company, and each of its directors, each of its officers who has signed the registration statement, each Person (if any), who controls the Company within the
meaning of the Securities Act, legal counsel and accountants for the Company, any underwriter (as defined in the Securities Act), any other Holder selling securities in such registration statement, and any controlling Person of any such underwriter
or other Holder, against any Damages, in each case only to the extent that such Damages arise out of or are based upon actions or omissions made in reliance upon and in conformity with written information furnished by or on behalf of such selling
Holder expressly for use in connection with such registration; and each such selling Holder will pay to the Company and each other aforementioned Person any legal or other expenses reasonably incurred thereby in connection


  
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with investigating or defending any claim or proceeding from which Damages may result, as such expenses are incurred; provided, however, that the indemnity agreement contained in
this Subsection 2.8(b) shall not apply to amounts paid in settlement of any such claim or proceeding if such settlement is effected without the consent of the Holder, which consent shall not be unreasonably withheld; and provided
further that in no event shall the aggregate amounts payable by any Holder by way of indemnity or contribution under Subsections 2.8(b) and 2.8(d) exceed the proceeds from the offering received by such Holder (net of any Selling
Expenses paid by such Holder), except in the case of fraud or willful misconduct by such Holder. 
 (c)    Promptly
after receipt by an indemnified party under this Subsection 2.8 of notice of the commencement of any action (including any governmental action) for which a party may be entitled to indemnification hereunder, such indemnified party will, if a
claim in respect thereof is to be made against any indemnifying party under this Subsection 2.8, give the indemnifying party notice of the commencement thereof. The indemnifying party shall have the right to participate in such action and, to
the extent the indemnifying party so desires, participate jointly with any other indemnifying party to which notice has been given, and to assume the defense thereof with counsel mutually satisfactory to the parties; provided, however,
that an indemnified party (together with all other indemnified parties that may be represented without conflict by one counsel) shall have the right to retain one separate counsel, with the fees and expenses to be paid by the indemnifying party, if
representation of such indemnified party by the counsel retained by the indemnifying party would be inappropriate due to actual or potential differing interests between such indemnified party and any other party represented by such counsel in such
action. The failure to give notice to the indemnifying party within a reasonable time of the commencement of any such action shall relieve such indemnifying party of any liability to the indemnified party under this Subsection 2.8, to the
extent that such failure actually and materially prejudices the indemnifying party’s ability to defend such action. The failure to give notice to the indemnifying party will not relieve it of any liability that it may have to any indemnified
party otherwise than under this Subsection 2.8. 
 (d)    To provide for just and equitable contribution to joint
liability under the Securities Act in any case in which either (i) any party otherwise entitled to indemnification hereunder makes a claim for indemnification pursuant to this Subsection 2.8 but it is judicially determined (by the entry
of a final judgment or decree by a court of competent jurisdiction and the expiration of time to appeal or the denial of the last right of appeal) that such indemnification may not be enforced in such case, notwithstanding the fact that this
Subsection 2.8 provides for indemnification in such case, or (ii) contribution under the Securities Act may be required on the part of any party hereto for which indemnification is provided under this Subsection 2.8, then, and in
each such case, such parties will contribute to the aggregate losses, claims, damages, liabilities, or expenses to which they may be subject (after contribution from others) in such proportion as is appropriate to reflect the relative fault of each
of the indemnifying party and the indemnified party in connection with the statements, omissions, or other actions that resulted in such loss, claim, damage, liability, or expense, as well as to reflect any other relevant equitable considerations.
The relative fault of the indemnifying party and of the indemnified party shall be determined by reference to, among other things, whether the untrue or allegedly untrue statement of a material fact, or the omission or alleged omission of a material
fact, relates to information supplied by the indemnifying party or by the indemnified 

  
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party and the parties’ relative intent, knowledge, access to information, and opportunity to correct or prevent such statement or omission; provided, however, that, in any such
case, (x) no Holder will be required to contribute any amount in excess of the public offering price of all such Registrable Securities offered and sold by such Holder pursuant to such registration statement, and (y) no Person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) will be entitled to contribution from any Person who was not guilty of such fraudulent misrepresentation; and provided further that in no event
shall a Holder’s liability pursuant to this Subsection 2.8(d), when combined with the amounts paid or payable by such Holder pursuant to Subsection 2.8(b), exceed the proceeds from the offering received by such Holder (net of any
Selling Expenses paid by such Holder), except in the case of willful misconduct or fraud by such Holder. 

(e)    Notwithstanding the foregoing, to the extent that the provisions on indemnification and contribution contained in
the underwriting agreement entered into in connection with the underwritten public offering are in conflict with the foregoing provisions, the provisions in the underwriting agreement shall control. 

(f)    Unless otherwise superseded by an underwriting agreement entered into in connection with the underwritten public
offering, the obligations of the Company and Holders under this Subsection 2.8 shall survive the completion of any offering of Registrable Securities in a registration under this Section 2, and otherwise shall
survive the termination of this Agreement. 
 2.9    Reports Under Exchange Act. With a view to making available
to the Holders the benefits of SEC Rule 144 and any other rule or regulation of the SEC that may at any time permit a Holder to sell securities of the Company to the public without registration or pursuant to a registration on Form S-3, the Company shall: 
 (a)    make and keep available adequate current public
information, as those terms are understood and defined in SEC Rule 144, at all times after the effective date of the registration statement filed by the Company for the IPO; 

(b)    use commercially reasonable efforts to file with the SEC in a timely manner all reports and other documents
required of the Company under the Securities Act and the Exchange Act (at any time after the Company has become subject to such reporting requirements); and 

(c)    furnish to any Holder, so long as the Holder owns any Registrable Securities, forthwith upon request (i) to
the extent accurate, a written statement by the Company that it has complied with the reporting requirements of SEC Rule 144 (at any time after ninety (90) days after the effective date of the registration statement filed by the Company for the
IPO), the Securities Act, and the Exchange Act (at any time after the Company has become subject to such reporting requirements), or that it qualifies as a registrant whose securities may be resold pursuant to Form
S-3 (at any time after the Company so qualifies); (ii) a copy of the most recent annual or quarterly report of the Company and such other reports and documents so filed by the Company; and (iii) such
other information as may be reasonably requested in availing any Holder of any rule or regulation of the SEC that permits the selling of any such securities without registration (at any time after the Company has become subject to the reporting
requirements under the Exchange Act) or pursuant to Form S-3 (at any time after the Company so qualifies to use such form). 

  
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 2.10    Limitations on Subsequent Registration Rights. From and
after the date of this Agreement, the Company shall not, without the prior written consent of the Holders of at least a majority of the Registrable Securities then outstanding, enter into any agreement with any holder or prospective holder of any
securities of the Company that would allow such holder or prospective holder (i) to include such securities in any registration unless, under the terms of such agreement, such holder or prospective holder may include such securities in any such
registration only to the extent that the inclusion of such securities will not reduce the number of Registrable Securities of the Holders that are included or (ii) to demand registration of any securities held by such holder or prospective
holder; provided that this limitation shall not apply to any additional Investor who becomes a party to this Agreement in accordance with Subsection 6.9. 

2.11    “Market Stand-off” Agreement. Each
Holder hereby agrees that it will not, without the prior written consent of the managing underwriter, during the period commencing on the date of the final prospectus relating to the IPO and ending on the date specified by the Company and the
managing underwriter (such period not to exceed one hundred eighty (180) days, or such other period as may be requested by the Company or an underwriter to accommodate regulatory restrictions on (1) the publication or other distribution of
research reports, and (2) analyst recommendations and opinions, including, but not limited to, the restrictions contained in FINRA Rule 2711(f)(4) or NYSE Rule 472(f)(4), or any successor provisions or amendments thereto), (i) lend; offer;
pledge; sell; contract to sell; sell any option or contract to purchase; purchase any option or contract to sell; grant any option, right, or warrant to purchase; or otherwise transfer or dispose of, directly or indirectly, any shares of Common
Stock or any securities convertible into or exercisable or exchangeable (directly or indirectly) for Common Stock (whether such shares or any such securities are then owned by the Holder or are thereafter acquired) or (ii) enter into any swap
or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of such securities, whether any such transaction described in clause (i) or (ii) above is to be settled by delivery of Common
Stock or other securities, in cash, or otherwise. The foregoing provisions of this Subsection 2.11 shall apply only to the IPO, shall not apply to the sale of any shares to an underwriter pursuant to an underwriting agreement, or the transfer
of any shares to any trust for the direct or indirect benefit of the Holder or the immediate family of the Holder, provided that the trustee of the trust agrees to be bound in writing by the restrictions set forth herein, and provided further
that any such transfer shall not involve a disposition for value, and shall be applicable to the Holders only if all officers, directors and stockholders individually owning more than one percent (1%) of the Company’s outstanding Common Stock
(after giving effect to conversion into Common Stock of all outstanding Preferred Stock) are subject to the same restrictions. The underwriters in connection with such registration are intended third-party beneficiaries of this Subsection
2.11 and shall have the right, power, and authority to enforce the provisions hereof as though they were a party hereto. Each Holder further agrees to execute such agreements as may be reasonably requested by the underwriters in connection with
such registration that are consistent with this Subsection 2.11 or that are necessary to give further effect thereto. Any discretionary waiver or termination of the restrictions of any or all such agreements by the Company or underwriters
shall apply pro rata to all Holders subject to such agreements, based on the number of shares subject to such agreements. 

  
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 2.12    Restrictions on Transfer. 

(a)    The Preferred Stock and the Registrable Securities shall not be sold, pledged, or otherwise transferred, and the
Company shall not recognize and shall issue stop-transfer instructions to its transfer agent with respect to any such sale, pledge, or transfer, except upon the conditions specified in this Agreement, which conditions are intended to ensure
compliance with the provisions of the Securities Act. A transferring Holder will cause any proposed purchaser, pledgee, or transferee of the Preferred Stock and the Registrable Securities held by such Holder to agree to take and hold such securities
subject to the provisions and upon the conditions specified in this Agreement. 
 (b)    Each certificate or instrument
representing (i) the Preferred Stock, (ii) the Registrable Securities, and (iii) any other securities issued in respect of the securities referenced in clauses (i) and (ii), upon any stock split, stock dividend, recapitalization,
merger, consolidation, or similar event, shall (unless otherwise permitted by the provisions of Subsection 2.12(c)) be stamped or otherwise imprinted with a legend substantially in the following form: 

THE SECURITIES REPRESENTED HEREBY HAVE BEEN ACQUIRED FOR INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED.
SUCH SHARES MAY NOT BE SOLD, PLEDGED, OR TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR A VALID EXEMPTION FROM THE REGISTRATION AND PROSPECTUS DELIVERY REQUIREMENTS OF SAID ACT. 

THE SECURITIES REPRESENTED HEREBY MAY BE TRANSFERRED ONLY IN ACCORDANCE WITH THE TERMS OF AN AGREEMENT BETWEEN THE COMPANY AND THE STOCKHOLDER,
A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY. 
 The Holders consent to the Company making a notation in its records and giving instructions
to any transfer agent of the Restricted Securities in order to implement the restrictions on transfer set forth in this Subsection 2.12. 

(c)    The holder of each certificate representing Restricted Securities, by acceptance thereof, agrees to comply in all
respects with the provisions of this Section 2. Before any proposed sale, pledge, or transfer of any Restricted Securities, unless there is in effect a registration statement under the Securities Act covering the proposed
transaction, the Holder thereof shall give notice to the Company of such Holder’s intention to effect such sale, pledge, or transfer. Each such notice shall describe the manner and circumstances of the proposed sale, pledge, or transfer in
sufficient detail and, if reasonably requested by the Company, shall be accompanied at such Holder’s expense by either (i) a written opinion of legal counsel who shall, and whose legal opinion shall, be reasonably satisfactory to the
Company, addressed to the Company, to the effect that the proposed transaction may be effected without registration under the Securities Act; (ii) a “no action” letter from the SEC to the effect that the proposed sale,


  
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pledge, or transfer of such Restricted Securities without registration will not result in a recommendation by the staff of the SEC that action be taken with respect thereto; or (iii) any
other evidence reasonably satisfactory to counsel to the Company to the effect that the proposed sale, pledge, or transfer of the Restricted Securities may be effected without registration under the Securities Act, whereupon the Holder of such
Restricted Securities shall be entitled to sell, pledge, or transfer such Restricted Securities in accordance with the terms of the notice given by the Holder to the Company. The Company will not require such a legal opinion or “no
action” letter (x) in any transaction in compliance with SEC Rule 144 or (y) in any transaction in which such Holder distributes Restricted Securities to an Affiliate of such Holder for noconsideration; provided that each
transferee agrees in writing to be subject to the terms of this Subsection 2.12. Each certificate or instrument evidencing the Restricted Securities transferred as above provided shall bear, except if such transfer is made pursuant to SEC Rule 144,
the appropriate restrictive legend set forth in Subsection 2.12(b), except that such certificate shall not bear such restrictive legend if, in the opinion of counsel for such Holder and the Company, such legend is not required in order to
establish compliance with any provisions of the Securities Act. 
 2.13    Termination of Registration Rights. The
right of any Holder to request registration or inclusion of Registrable Securities in any registration pursuant to Subsection 2.1 or Subsection 2.2 shall terminate upon the earliest to occur of: 

(a)    the closing of a Deemed Liquidation Event, as such term is defined in the Certificate of Incorporation; 

(b) such time as Rule 144 or another similar exemption under the Securities Act is available for the sale of all of such Holder’s shares
without limitation during a three-month period without registration; and 
 (c)    the fifth anniversary of the IPO.

 3.    Information Rights. 

3.1    Delivery of Financial Statements. The Company shall deliver to each Major Investor: 

(a) as soon as practicable, but in any event within ninety (90) days after the end of each fiscal year of the Company, (i) a balance
sheet as of the end of such year, (ii) statements of income and of cash flows for such year, and (iii) a statement of stockholders’ equity as of the end of such year. Unless otherwise waived in writing by Iconiq Strategic Partners II,
L.P. (“ICONIQ”), OpenView Venture Partners III, L.P. (“OpenView”), Index Ventures VI (Jersey), L.P (“Index Ventures”) and ru-Net Technology Capital LP
(“RTP Ventures”), all such financial statements shall be audited and certified by independent public accountants approved by the Board, including a majority of the Preferred Directors; 

(b) as soon as practicable, but in any event within forty-five (45) days after the end of each of the first three (3) quarters of
each fiscal year of the Company, unaudited statements of income and of cash flows for each such fiscal quarter, and an unaudited balance sheet and a statement of stockholders’ equity as of the end of such fiscal quarter, all prepared in
accordance with GAAP (except that such financial statements may (i) be subject to normal year-end audit adjustments and (ii) not contain all notes thereto that may be required in accordance with GAAP); 

  
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 (c) upon request, copies of the most recent budget and business plan for the Company
(collectively, the “Budget”) approved by the Board, including a majority of the Preferred Directors; and 

(d)    such other information relating to the financial condition, business, prospects, or corporate affairs of the
Company as any Major Investor may from time to time reasonably request; provided, however, that the Company shall not be obligated under this Subsection 3.1 to provide information (i) that the Company reasonably determines
in good faith to be a trade secret or confidential information (unless covered by an enforceable confidentiality agreement, in form acceptable to the Company) or (ii) the disclosure of which would adversely affect the attorney-client privilege
between the Company and its counsel. 
 If, for any period, the Company has any subsidiary whose accounts are consolidated with those of the
Company, then in respect of such period the financial statements delivered pursuant to the foregoing sections shall be the consolidated and consolidating financial statements of the Company and all such consolidated subsidiaries. 

Notwithstanding anything else in this Subsection 3.1 to the contrary, the Company may cease providing the information set forth in this
Subsection 3.1 during the period starting with the date sixty (60) days before the Company’s good-faith estimate of the date of filing of a registration statement if it reasonably concludes it must do so to comply with the SEC rules
applicable to such registration statement and related offering; provided that the Company’s covenants under this Subsection 3.1 shall be reinstated at such time as the Company is no longer actively employing its commercially reasonable
efforts to cause such registration statement to become effective. 
 3.2    Inspection. The Company shall permit
each Major Investor (provided that the Board has not reasonably determined that such Major Investor is a competitor of the Company), at such Major Investor’s expense, to visit and inspect the Company’s properties; examine its books of
account and records; and discuss the Company’s affairs, finances, and accounts with its officers, during normal business hours of the Company as may be reasonably requested by the Major Investor; provided, however, that the
Company shall not be obligated pursuant to this Subsection 3.2 to provide access to any information that it reasonably and in good faith considers to be a trade secret or confidential information (unless covered by an enforceable
confidentiality agreement, in form acceptable to the Company) or the disclosure of which would adversely affect the attorney-client privilege between the Company and its counsel. 

3.3    Board Observer Right. For so long as ICONIQ owns at least 500,000 shares of Series D Preferred Stock (or an
equivalent amount of Common Stock issued upon conversion thereof) ( subject to appropriate adjustment in the event of any stock split, stock dividend, combination, or other recapitalization or reclassification effected after the date hereof), the
Company shall invite a representative of ICONIQ to attend all meetings of the Board in a nonvoting observer capacity and, in this respect, shall give such representative copies of all notices, minutes, consents, and other materials that it provides
to its directors at the same time 

  
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and in the same manner as provided to such directors; provided, however, that such representative shall agree to hold in confidence and trust and to act in a fiduciary manner with
respect to all information so provided; and provided further, that the Company reserves the right to withhold any information and to exclude such representative from any meeting or portion thereof if access to such information or attendance
at such meeting could adversely affect the attorney-client privilege between the Company and its counsel or result in disclosure of trade secrets or a conflict of interest. 

3.4    Additional Information Rights. The Company shall deliver to ICONIQ, OpenView, Index Ventures, and RTP
Ventures: 
 (a) as soon as practicable, but in any event within twenty-one (21) days after the
end of each calendar quarter, to ICONIQ’s, OpenView’s, Index Ventures’, and RTP Ventures’ satisfaction, all the information requested on the Metric Schedule substantially in the form attached hereto as Exhibit B. The completed
schedule shall be sent to Index Ventures via email, with confirmation of receipt to reporting@indexventures.com or by any other reasonable method as hereafter specified by Index Ventures. 

(b)    as soon as practicable, but in any event within twenty-one (21) days
after the end of each calendar year, a detailed share capitalization table on a fully diluted basis, as of December 31 of the just completed calendar year, setting out the authorized and issued share capital of the Company on a shareholder by
shareholder basis, together with details of any unexercised and unvested options and detailing any share transfers since the delivery of the previous share capitalization table, if any. 

3.5    Termination of Information Rights. The covenants set forth in Subsections 3.1, 3.2,
3.3, and 3.4 shall terminate and be of no further force or effect (i) immediately before the consummation of the IPO, or (ii) when the Company first becomes subject to the periodic reporting requirements of Section 12(g)
or 15(d) of the Exchange Act, or (iii) upon a Deemed Liquidation Event, as such term is defined in the Certificate of Incorporation, whichever event occurs first. 

3.6    Confidentiality. Each Investor agrees that such Investor will keep confidential and will not disclose,
divulge, or use for any purpose (other than to monitor its investment in the Company) any confidential information obtained from the Company pursuant to the terms of this Agreement (including notice of the Company’s intention to file a
registration statement), unless such confidential information (a) is known or becomes known to the public in general (other than as a result of a breach of this Subsection 3.6 by such Investor), (b) is or has been independently developed
or conceived by the Investor without use of the Company’s confidential information, (c) is or has been made known or disclosed to the Investor by a third party without a breach of any obligation of confidentiality such third party may have
to the Company, (d) was in the possession of or known by such Investor without restriction prior to receipt from the Company, or (e) is required to be disclosed by a governmental authority, stock market or stock exchange; provided,
however, that an Investor may disclose confidential information (i) to its attorneys, accountants, consultants, and other professionals to the extent necessary to obtain their services in connection with monitoring its investment in the
Company; (ii) to any prospective purchaser of any Registrable Securities from such Investor, if such 

  
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prospective purchaser agrees to be bound by the provisions of this Subsection 3.6; (iii) to any existing Affiliate, partner, member, former partner or member who retained an economic
interest in such Investor, stockholder, prospective investor or limited partner or wholly owned subsidiary of such Investor in the ordinary course of business (or any employee or representative of any of the foregoing) (each of the foregoing
persons, a “Permitted Disclosee”), provided that such Investor informs such Person that such information is confidential and directs such Person to maintain the confidentiality of such information; or (iv) as may
otherwise be required by law, rule, regulation or court or other governmental order, provided that the Investor promptly notifies the Company of such disclosure and takes reasonable steps to minimize the extent of any such required
disclosure. Furthermore, nothing contained herein shall prevent the Investors, individually or together, or any Permitted Disclosee from entering into any business, entering into any agreement with a third party, or investing in or engaging in
investment discussions with any other company (whether or not competitive with the Company), provided that such Investor or the Permitted Disclosee does not, except as permitted in accordance with this Subsection 3.6, disclose or otherwise
make use of any proprietary or confidential information of the Company in connection with such activities. 

3.7    Termination of Seed Preferred Stock Board Observer Rights. Each of the undersigned Investors other than
ICONIQ, OpenView, Index Ventures and RTP Ventures hereby agrees that, regardless of what is set forth in any management rights letter or other side letter or agreement between the Company and such Investor, such Investor shall not have the right to
attend and observe Board meetings of the Company other than at the invitation of and as approved by the Board, including a majority of the Preferred Directors, in its discretion. Other than as amended by the foregoing sentence, the terms of any such
management rights letters shall remain in full force and effect. 
 4.    Rights to Future Stock Issuances. 

4.1    Right of First Offer. Subject to the terms and conditions of this Subsection 4.1 and applicable
securities laws, if the Company proposes to offer or sell any New Securities, the Company shall first offer such New Securities to each Major Investor. A Major Investor shall be entitled to apportion the right of first offer hereby granted to it
among itself and its Affiliates in such proportions as it deems appropriate. 
 (a) The Company shall give notice (the “Offer
Notice”) to each Major Investor, stating (i) its bona fide intention to offer such New Securities, (ii) the number of such New Securities to be offered, and (iii) the price and terms, if any, upon which it proposes to offer
such New Securities. 
 (b)    By notification to the Company within twenty (20) days after the Offer Notice is
given, each Major Investor may elect to purchase or otherwise acquire, at the price and on the terms specified in the Offer Notice, up to that portion of such New Securities which equals the product of (x) the aggregate number of New
Securities, times, (y) a fraction, the numerator of which is the aggregate number of the Conversion Shares held by such Major Investor and the denominator of which is the total number of shares of Common Stock of the Company then issued and
outstanding (assuming full conversion and/or exercise, as applicable, of all outstanding shares of Preferred Stock and other Derivative Securities). At the expiration of 

  
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such twenty (20) day period, the Company shall promptly notify each Major Investor that elects to purchase or acquire all the shares available to it (each, a “Fully Exercising
Investor”) of any other Major Investor’s failure to do likewise. During the twenty (20) day period commencing after the Company has given such notice, each Fully Exercising Investor may, by giving notice to the Company, elect to
purchase or acquire, in addition to the number of shares specified above, up to that portion of the New Securities for which Major Investors were entitled to subscribe but that were not subscribed for by the Major Investors which is equal to the
product of (x) the aggregate number of New Securities for which Major Investors were entitled to subscribe but that were not subscribed for by the Major Investors, times, (y) a fraction, the numerator of which is the aggregate number of
Conversion Shares then held by such Fully Exercising Investor and the denominator of which is the total number of Conversion Shares held by all Fully Exercising Investors who wish to purchase such unsubscribed shares. The closing of any sale
pursuant to this Subsection 4.1(b) shall occur within the later of ninety (90) days of the date that the Offer Notice is given and the date of initial sale of New Securities pursuant to Subsection 4.1(c). 

(c)    If all New Securities referred to in the Offer Notice are not elected to be purchased or acquired as provided in
Subsection 4.1(b), the Company may, during the ninety (90) day period following the expiration of the periods provided in Subsection 4.1(b), offer and sell the remaining unsubscribed portion of such New Securities to any Person or
Persons at a price not less than, and upon terms no more favorable to the offeree than, those specified in the Offer Notice. If the Company does not enter into an agreement for the sale of the New Securities within such period, or if such agreement
is not consummated within thirty (30) days of the execution thereof, the right provided hereunder shall be deemed to be revived and such New Securities shall not be offered unless first reoffered to the Major Investors in accordance with this
Subsection 4.1. 
 (d)    The right of first offer in this Subsection 4.1 shall not be applicable to
(i) Exempted Securities (as defined in the Certificate of Incorporation); and (ii) shares of Common Stock issued in the IPO. 

(e)    Notwithstanding any provision hereof to the contrary, in lieu of complying with the provisions of this
Subsection 4.1, the Company may elect to give notice to the Major Investors within thirty (30) days after the issuance of New Securities. Such notice shall describe the type, price, and terms of the New Securities. Each Major Investor
shall have twenty (20) days from the date notice is given to elect to purchase up to the number of New Securities that would, if purchased by such Major Investor, maintain such Major Investor’s percentage-ownership position, calculated as
set forth in Subsection 4.1(b) before giving effect to the issuance of such New Securities. The closing of such sale shall occur within sixty (60) days of the date notice is given to the Major Investors. 

4.2    Termination. The covenants set forth in Subsection 4.1 shall terminate and be of no further force or
effect (i) immediately before the consummation of the IPO, (ii) when the Company first becomes subject to the periodic reporting requirements of Section 12(g) or 15(d) of the Exchange Act, or (iii) upon a Deemed Liquidation
Event, as such term is defined in the Certificate of Incorporation, whichever event occurs first. 

  
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 5.    Additional Covenants. 

5.1    D&O Insurance. The Company shall use its commercially reasonable efforts to cause Directors and Officers
liability insurance, in an amount not less than $1,000,000 and on terms and conditions satisfactory to the Board, including a majority of the Preferred Directors, to be maintained until such time as the Board, including a majority of the Preferred
Directors, determines that such insurance should be discontinued. 
 5.2    Employee Agreements. The Company will
cause each Key Employee that has not already done so to enter into a noncompetition, nonsolicitation, nondisclosure and proprietary rights assignment agreement with a one (1) year noncompetition and nonsolicitation period, substantially in the
form attached hereto as Exhibit A-1. The Company will cause each employee that is not a Key Employee and that has not already done so to enter into a nonsolicitation, nondisclosure and proprietary
rights assignment agreement with a one (1) year nonsolicitation period, substantially in the form attached hereto as Exhibit A-2. In addition, the Company shall not amend, modify, terminate, waive,
or otherwise alter, in whole or in part, any of the above-referenced agreements or any restricted stock agreement between the Company and any employee, without the consent of the Board. 

5.3    Employee Stock. Unless otherwise approved by the Board, including a majority of the Preferred Directors, all
future employees and consultants of the Company who purchase, receive options to purchase, or receive awards of shares of the Company’s capital stock, and any other Person who purchases, receives options to purchase, or receives awards of
shares of the Company’s capital stock pursuant to the Company’s 2012 Equity Incentive Plan or any other equity incentive plan approved by the Board, after the date hereof shall be required to execute restricted stock or option agreements,
as applicable, providing for (i) vesting of shares over a four (4) year period, with the first twenty-five percent (25%) of such shares vesting following twelve (12) months of continued employment or service, and the remaining shares
vesting in equal monthly installments over the following thirty-six (36) months, and (ii) a market stand-off provision substantially similar to that in
Subsection 2.11. In addition, unless otherwise approved by the Board, including a majority of the Preferred Directors, the Company shall retain a “right of first refusal” on employee transfers until the Company’s IPO and shall
have the right to repurchase unvested shares at cost upon termination of employment of a holder of restricted stock. The Company will not accelerate any such vesting or allow any such repurchase right to expire without the approval of the Board,
including a majority of the Preferred Directors. 
 5.4    Qualified Small Business Stock. The Company shall
submit to its stockholders (including the Investors) and to the Internal Revenue Service any reports that may be required under Section 1202(d)(1)(C) of the Internal Revenue Code (the “Code”) and the regulations promulgated
thereunder. In addition, within twenty (20) business days after any Investor’s written request therefor, the Company shall, at its option, either (i) deliver to such Investor a written statement indicating whether (and what portion
of) such Investor’s interest in the Company constitutes “qualified small business stock” as defined in Section 1202(c) of the Code or (ii) deliver to such Investor such factual information in the Company’s possession as
is reasonably necessary to enable such Investor to determine whether (and what portion of) such Investor’s interest in the Company constitutes “qualified small business stock” as defined in Section 1202(c) of the Code. 

  
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 5.5    Matters Requiring Investor Director Approval. So long as
there are issued and outstanding collectively at least 1,800,000 shares of Series D Preferred Stock, Series C Preferred Stock, Series B Preferred Stock, and/or Series A Preferred Stock (subject to appropriate adjustment in the event of any stock
dividend, stock split, combination or other similar recapitalization with respect to the Series D Preferred Stock, Series C Preferred Stock, Series B Preferred Stock, or Series A Preferred Stock, as applicable), the Company hereby covenants and
agrees with each of the Investors that it shall not, without approval of the Board, which approval must include the affirmative vote of a majority of the Preferred Directors: 

(a)    make, or permit any subsidiary to make, any loan or advance to, or own any stock or other securities of, any
subsidiary or other corporation, partnership, or other entity unless it is wholly owned by the Company; 
 (b)    make,
or permit any subsidiary to make, any loan or advance to any Person, including, without limitation, any employee or director of the Company or any subsidiary, except short-term loans of less than $25,000 (e.g., for employee hardship), advances and
similar expenditures in the ordinary course of business or under the terms of an employee stock or option plan approved by the Board; 

(c)    guarantee, directly or indirectly, or permit any subsidiary to guarantee, directly or indirectly, any indebtedness
except for trade accounts of the Company or any subsidiary arising in the ordinary course of business; 
 (d)    make
any investment inconsistent with any investment policy approved by the Board; 
 (e)    incur any aggregate indebtedness
in excess of $500,000 that is not already included in a budget approved by the Board, other than trade credit incurred in the ordinary course of business; 

(f) otherwise enter into or be a party to any transaction with any director, officer, or employee of the Company or any “associate”
(as defined in Rule 12b-2 promulgated under the Exchange Act) of any such Person, including without limitation any “management bonus” or similar plan providing payments to employees in connection
with a Deemed Liquidation Event as such term is defined in the Certificate of Incorporation, except for transactions contemplated by this Agreement, the Purchase Agreement and other transaction documents; 

(g)    hire, terminate, or change the compensation of the executive officers, including approving any option grants or
stock awards to executive officers; 
 (h)    change the principal business of the Company, enter new lines of business,
or exit the current line of business; 
 (i)    sell, assign, license, pledge, or encumber material technology or
intellectual property, other than licenses granted in the ordinary course of business; 

  
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 (j) enter into any corporate strategic relationship outside of the ordinary course of the
Company’s business involving the payment, contribution, or assignment by the Company or to the Company of any assets; 

(k)    engage in any transaction with any Affiliate, other than on an arms-length basis; 

(l)    materially deviate from annual operating budgets and business plans; or 

(m)    enter into any agreement to do any of the foregoing. 

In addition, the Company shall prepare and present to Board in a timely manner before the end of each fiscal year the Budget for the next
fiscal year, which Budget must be approved by the Board, including a majority of the Preferred Directors. 

5.6    Board Matters. Unless otherwise determined by the vote of a majority of the directors then in office,
including a majority of the Preferred Directors, the Board shall meet at least quarterly in accordance with an agreed-upon schedule. The Company shall reimburse the nonemployee directors for all reasonable out-of-pocket travel expenses incurred (consistent with the Company’s travel policy) in connection with attending meetings of the Board. 

5.7    Successor Indemnification. If the Company or any of its successors or assignees consolidates with or merges
into any other Person and is not the continuing or surviving corporation or entity of such consolidation or merger, then to the extent necessary, proper provision shall be made so that successors and assignees of the Company assume the obligations
of the Company with respect to indemnification of members of the Board as in effect immediately before such transaction, whether such obligations are contained in the Company’s Bylaws, its Certificate of Incorporation, or elsewhere, as the case
may be. 
 5.8    Termination of Covenants. The covenants set forth in this Section 5
shall terminate and be of no further force or effect (i) immediately before the consummation of the IPO; (ii) when the Company first becomes subject to the periodic reporting requirements of Section 12(g) or 15(d) of the Exchange Act,
or (iii) upon a Deemed Liquidation Event, as such term is defined in the Certificate of Incorporation, whichever event occurs first. 

6.    Miscellaneous. 

6.1    Successors and Assigns. 

(a)    Except as otherwise provided with respect to Amplify in Subsection 6.1(b), the rights under this Agreement
may be assigned (but only with all related obligations) by a Holder to a transferee of Registrable Securities that (i) is an Affiliate of a Holder; (ii) is a Holder’s Immediate Family Member or trust for the benefit of an individual
Holder or one or more of such Holder’s Immediate Family Members; or (iii) after such transfer, holds at least 10,000 shares of Registrable Securities (subject to appropriate adjustment for stock splits, stock dividends, combinations, and
other recapitalizations); provided, however, that (x) the Company is, within a reasonable time after such transfer, furnished with written notice of the 

  
 22 













 
name and address of such transferee and the Registrable Securities with respect to which such rights are being transferred; and (y) such transferee agrees in a written instrument delivered
to the Company to be bound by and subject to the terms and conditions of this Agreement, including the provisions of Subsection 2.11. For the purposes of determining the number of shares of Registrable Securities held by a transferee, the
holdings of a transferee (1) that is an Affiliate or stockholder of a Holder; (2) who is a Holder’s Immediate Family Member; or (3) that is a trust for the benefit of an individual Holder or such Holder’s Immediate Family
Member shall be aggregated together and with those of the transferring Holder; provided further that all transferees who would not qualify individually for assignment of rights shall have a single attorney-in-fact for the purpose of exercising any rights, receiving notices, or taking any action under this Agreement. 

(b) For so long as Amplify Partners, L.P., individually or together with its Affiliates (collectively, “Amplify”) is a Major
Investor, Amplify shall be free to assign to Battery Ventures IX, L.P., and/or an Affiliate thereof (collectively, “Battery”), in whole or in part, without the consent of the Company but subject to the terms of this Subsection
6.1(b), Amplify’s rights and obligations under Subsection 4.1 with respect to any offer or issuance by the Company of New Securities (a “First Offer Assignment”). In no event, however, shall the Company be obligated
to provide any notice directly to Battery of any offer or issuance of New Securities. In order to exercise its First Offer Assignment right, Amplify must give the Company written notice of the First Offer Assignment within 10 days after the
applicable Offer Notice is given (or within 10 days after notice is given by the Company if proceeding pursuant to Subsection 4.1(e)). Immediately upon such notice by Amplify: (i) the First Offer Assignment shall be deemed to be
irrevocable and the Company shall be entitled to deal exclusively with Battery with respect to the applicable offering and/or issuance of New Securities (to the extent of the First Offer Assignment) and (ii) the Company shall be under no
obligation to provide any further notices to Amplify under Subsection 4.1(b) or otherwise with respect to the applicable offering and/or issuance of New Securities (if such First Offer Assignment is made with respect to the entire offer). The
Company shall have no liability with respect to, and Amplify hereby waives, releases and agrees not to sue for, any direct or indirect damages suffered by Amplify in connection with, arising out of or in any way related to any First Offer Assignment
(to the extent of the First Offer Assignment); the Company’s obligation to deal with Battery following a First Offer Assignment will be conditioned upon Battery making a substantially similar, waiver, release and agreement. 

(c)    The terms and conditions of this Agreement inure to the benefit of and are binding upon the respective successors
and permitted assignees of the parties. Nothing in this Agreement, express or implied, is intended to confer upon any party other than the parties hereto or their respective successors and permitted assignees any rights, remedies, obligations or
liabilities under or by reason of this Agreement, except as expressly provided herein. 
 6.2    Governing Law.
This Agreement and any controversy arising out of or relating to this Agreement shall be governed by the internal laws of the State of Delaware, without regard to its principles of conflicts of laws. 

6.3    Counterparts. This Agreement may be executed in two or more counterparts, each of which shall be deemed an
original, but all of which together shall constitute 

  
 23 













 
one and the same instrument. Counterparts may be delivered via facsimile, electronic mail (including pdf or any electronic signature complying with the U.S. federal ESIGN Act of 2000, e.g.,
www.docusign.com) or other transmission method and any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes. 

6.4    Titles and Subtitles. The titles and subtitles used in this Agreement are for convenience only and are not
to be considered in construing or interpreting this Agreement. 
 6.5    Notices. All notices and other
communications given or made pursuant to this Agreement shall be in writing and shall be deemed effectively given upon the earlier of actual receipt or: (i) personal delivery to the party to be notified, (ii) when sent, if sent by
electronic mail or facsimile during normal business hours of the recipient, and if not sent during normal business hours, then on the recipient’s next business day, (iii) five (5) days after having been sent by registered or certified
mail, return receipt requested, postage prepaid, or (iv) one (1) business day after deposit with a nationally recognized overnight courier, freight prepaid, specifying next business day delivery, with written verification of receipt. All
communications shall be sent to the respective parties at their e-mail address, facsimile number or address as set forth on the applicable signature page or Schedule A, or to such e-mail address, facsimile number or address as subsequently modified by written notice given in accordance with this Subsection 6.5. If notice is given to the Company, a copy shall also be given to Mark A.
Haddad, Foley Hoag LLP, Seaport West, 155 Seaport Blvd., Boston, MA 02210, MHaddad@foleyhoag.com. If notice is given to the Investors, a copy shall also be given to Ilan Nissan, Goodwin Procter LLP, The New York Times Building, 620 Eighth Avenue,
New York, NY 10018-1405, INissan@goodwinprocter.com and to Jane Greyf, Goodwin Procter LLP, The New York Times Building, 620 Eighth Avenue, New York, NY 10018-1405, JGreyf@goodwinprocter.com. 

6.6    Amendments and Waivers. Any term of this Agreement may be amended and the observance of any term of this
Agreement may be waived (either generally or in a particular instance, and either retroactively or prospectively) only with the written consent of, (i) the Company, and (ii) the holders of at least a majority of the shares of Common Stock
issued or issuable upon conversion of shares of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, and Series D Preferred Stock held by the Investors (voting together as a single class and on an as-converted basis); provided that the Company may in its sole discretion waive compliance with Subsection 2.12(c) ( and the Company’s failure to object promptly in writing after notification of a
proposed assignment allegedly in violation of Subsection 2.12(c) shall be deemed to be a waiver); and provided further that any provision hereof may be waived by any waiving party on such party’s own behalf, without the consent of
any other party. Notwithstanding the foregoing, this Agreement may not be amended or terminated and the observance of any term hereof may not be waived with respect to any Investor without the written consent of such Investor, unless such amendment,
termination, or waiver applies to all Investors in the same fashion (it being agreed that a waiver of the provisions of Section 4 with respect to a particular transaction shall be deemed to apply to all Investors in the
same fashion if such waiver does so by its terms, notwithstanding the fact that certain Investors may nonetheless, by agreement with the Company, purchase securities in such transaction). The Company shall give prompt notice of any amendment or
termination hereof or waiver hereunder to any party hereto that did not consent in writing to such amendment, termination, or waiver. Any 

  
 24 













 
amendment, termination, or waiver effected in accordance with this Subsection 6.6 shall be binding on all parties hereto, regardless of whether any such party has consented thereto;
provided, however, that notwithstanding the foregoing, Section 3.3 of this Agreement shall not be amended or waived without the prior written consent of ICONIQ, and provided further, however,
that Section 3.4 of this Agreement, or any particular subsection thereto, shall not be amended or waived without the prior written consent of ICONIQ, OpenView, Index Ventures and RTP Ventures, and provided further,
however, that the definition of Major Investor will not be amended to increase the qualification under such definition to more than 300,000 shares of Registrable Securities (as adjusted for any stock split, stock dividend, combination, or
other recapitalization or reclassification effected after the date hereof), without the approval of the holders of at least a majority of the shares of Common Stock issued upon conversion of shares of Seed Preferred Stock or issuable upon conversion
of the shares of Seed Preferred Stock held by the Investors (voting as a single class and on an as-converted basis). Notwithstanding the foregoing, (a) the rights of ICONIQ under
Section 4.1 may not be waived without its written consent if OpenView, Index Ventures, RTP Ventures or any of their Affiliates or assigns purchases securities in such transaction, (b) the rights of OpenView under
Section 4.1 may not be waived without its written consent if ICONIQ, Index Ventures, RTP Ventures or any of their Affiliates or assigns purchases securities in such transaction, (c) the rights of Index Ventures under
Section 4.1 may not be waived without its written consent if ICONIQ, OpenView, RTP Ventures or any of their Affiliates or assigns purchases securities in such transaction, (d) the rights of RTP Ventures under
Section 4.1 may not be waived without its written consent if ICONIQ, OpenView, Index Ventures or any of their Affiliates or assigns purchases securities in such transaction, and (e) this sentence will not be amended
without the written consent of ICONIQ, OpenView, Index Ventures and RTP Ventures. No waivers of or exceptions to any term, condition, or provision of this Agreement, in any one or more instances, shall be deemed to be or construed as a further or
continuing waiver of any such term, condition, or provision. 
 6.7    Severability. In case any one or more of
the provisions contained in this Agreement is for any reason held to be invalid, illegal or unenforceable in any respect, such invalidity, illegality, or unenforceability shall not affect any other provision of this Agreement, and such invalid,
illegal, or unenforceable provision shall be reformed and construed so that it will be valid, legal, and enforceable to the maximum extent permitted by law. 

6.8    Aggregation of Stock. All shares of Registrable Securities held or acquired by Affiliates shall be
aggregated together for the purpose of determining the availability of any rights under this Agreement and such Affiliated persons may apportion such rights as among themselves in any manner they deem appropriate. 

6.9    Additional Investors. Notwithstanding anything to the contrary contained herein, if the Company issues
additional shares of the Company’s Preferred Stock after the date hereof, any purchaser of such shares of Preferred Stock may become a party to this Agreement by executing and delivering an additional counterpart signature page to this
Agreement, and thereafter shall be deemed an “Investor” for all purposes hereunder. No action or consent by the Investors shall be required for such joinder to this Agreement by such additional Investor, so long as such additional Investor
has agreed in writing to be bound by all of the obligations as an “Investor” hereunder. 

  
 25 













 6.10    Entire Agreement. This Agreement (including any Schedules
and Exhibits hereto) constitutes the full and entire understanding and agreement among the parties with respect to the subject matter hereof, and any other written or oral agreement relating to the subject matter hereof existing between the parties
is expressly canceled. Upon the effectiveness of this Agreement, the Prior Agreement shall be deemed amended and restated and superseded and replaced in its entirety by this Agreement, and shall be of no further force or effect. 

6.11    Dispute Resolution. The parties (a) hereby irrevocably and unconditionally submit to the jurisdiction
of the state courts of Delaware and to the jurisdiction of the United States District Court for the District of Delaware for the purpose of any suit, action or other proceeding arising out of or based upon this Agreement, (b) agree not to
commence any suit, action or other proceeding arising out of or based upon this Agreement except in the state courts of Delaware or the United States District Court for the District of Delaware, and (c) hereby waive, and agree not to assert, by
way of motion, as a defense, or otherwise, in any such suit, action or proceeding, any claim that it is not subject personally to the jurisdiction of the above-named courts, that its property is exempt or immune from attachment or execution, that
the suit, action or proceeding is brought in an inconvenient forum, that the venue of the suit, action or proceeding is improper or that this Agreement or the subject matter hereof may not be enforced in or by such court. 

6.12    WAIVER OF JURY TRIAL. EACH PARTY HEREBY WAIVES ITS RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION
BASED UPON OR ARISING OUT OF THIS AGREEMENT, THE OTHER TRANSACTION DOCUMENTS, THE SECURITIES OR THE SUBJECT MATTER HEREOF OR THEREOF. THE SCOPE OF THIS WAIVER IS INTENDED TO BE ALL-ENCOMPASSING OF ANY AND ALL
DISPUTES THAT MAY BE FILED IN ANY COURT AND THAT RELATE TO THE SUBJECT MATTER OF THIS TRANSACTION, INCLUDING, WITHOUT LIMITATION, CONTRACT CLAIMS, TORT CLAIMS (INCLUDING NEGLIGENCE), BREACH OF DUTY CLAIMS, AND ALL OTHER COMMON LAW AND STATUTORY
CLAIMS. THIS SECTION HAS BEEN FULLY DISCUSSED BY EACH OF THE PARTIES HERETO AND THESE PROVISIONS WILL NOT BE SUBJECT TO ANY EXCEPTIONS. EACH PARTY HERETO HEREBY FURTHER WARRANTS AND REPRESENTS THAT SUCH PARTY HAS REVIEWED THIS WAIVER WITH ITS LEGAL
COUNSEL, AND THAT SUCH PARTY KNOWINGLY AND VOLUNTARILY WAIVES ITS JURY TRIAL RIGHTS FOLLOWING CONSULTATION WITH LEGAL COUNSEL. 

6.13    Delays or Omissions. No delay or omission to exercise any right, power, or remedy accruing to any party
under this Agreement, upon any breach or default of any other party under this Agreement, shall impair any such right, power, or remedy of such nonbreaching or nondefaulting party, nor shall it be construed to be a waiver of or acquiescence to any
such breach or default, or to any similar breach or default thereafter occurring, nor shall any waiver of any single breach or default be deemed a waiver of any other breach or default theretofore or thereafter occurring. All remedies, whether under
this Agreement or by law or otherwise afforded to any party, shall be cumulative and not alternative. 

6.14    Acknowledgment. The Company acknowledges that the Investors are in the business of venture capital
investing and therefore review the business plans and related 

  
 26 













 
proprietary information of many enterprises, including enterprises which may have products or services which compete directly or indirectly with those of the Company. Nothing in this Agreement
shall preclude or in any way restrict an Investor from investing or participating in any particular enterprise whether or not such enterprise has products or services which compete with those of the Company, provided such Investor observes and
continues to comply with its confidentiality obligations under Subsection 3.6. 
 [Remainder of Page Intentionally Left Blank]


  
 27 













 IN WITNESS WHEREOF, the parties have executed this Fourth Amended and Restated
Investors’ Rights Agreement as of the date first written above. 
  

			
	 COMPANY:
  

DATADOG, INC.

		
	By:	 	/s/ Olivier Pomel
		 	 Olivier Pomel
 Chief Executive
Officer



 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	 INVESTORS:
  

ICONIQ STRATEGIC PARTNERS II, L.P.

		
	By:	 	 ICONIQ Strategic Partners II GP, L.P.,
 its
General Partner

	By:	 	 ICONIQ Strategic Partners II TT GP, Ltd.,

its General Partner



  

			
	By:	 	/s/ Kevin Foster
	Name:	 	Kevin Foster
	Title:	 	Authorized Person


  

			
	ICONIQ STRATEGIC PARTNERS II-B, L.P.
		
	By:	 	 ICONIQ Strategic Partners II GP, L.P.,
 its
General Partner

	By:	 	 ICONIQ Strategic Partners II TT GP, Ltd.,

its General Partner



  

			
	By:	 	/s/ Kevin Foster
	Name:	 	Kevin Foster
	Title:	 	Authorized Person


  

			
	 ICONIQ STRATEGIC PARTNERS II CO-INVEST, L.P.,

DD SERIES

		
	By:	 	 ICONIQ Strategic Partners II GP, L.P.,
 its
General Partner

	By:	 	 ICONIQ Strategic Partners II TT GP, Ltd.,

its General Partner



  

			
	By:	 	/s/ Kevin Foster
	Name:	 	Kevin Foster
	Title:	 	Authorized Person


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	 INVESTORS:
  

INDEX VENTURES GROWTH III (JERSEY), L.P.

		
	By:	 	 Its Managing General Partner:
 Index Venture
Growth Associates III Limited



  

			
	By:	 	/s/ Nigel Greenwood
	Name:	 	Nigel Greenwood
	Title:	 	Director


  

			
	INDEX VENTURES VI (JERSEY), L.P.
		
	By:	 	 Its Managing General Partner:
 Index Venture
Associates VI Limited



  

			
	By:	 	/s/ Nigel Greenwood
	Name:	 	Nigel Greenwood
	Title:	 	Director


  

			
	INDEX VENTURES VI PARALLEL ENTREPRENEUR FUND (JERSEY), L.P.
		
	By:	 	 Its Managing General Partner:
 Index Venture
Associates VI Limited



  

			
	By:	 	/s/ Nigel Greenwood
	Name:	 	Nigel Greenwood
	Title:	 	Director


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	 INVESTORS:
  

YUCCA (JERSEY), SLP

	
	By: EFG Trust Company Limited as Authorised Signatory of Yucca (Jersey) SLP in its capacity as administrator of the Index Ventures Growth III Co-Investment Scheme


  

			
	By:	 	/s/ N. T. Greenwood
	Name:	 	N. T. Greenwood
	Title:   Authorised Signatory – EFG Trust Company Limited


  

			
	YUCCA (JERSEY) SLP
	
	By: Elian Employee Benefit Services Limited as Authorised Signatory of Yucca (Jersey) SLP in its capacity as administrator of the Index Co-Investment Scheme


  

			
	By:	 	/s/ Giles Johnstone-Scott & Simon King
	Name:	 	Giles Johnstone-Scott & Simon King
	Title:   Authorised Signatory – Elian Employee Benefit Services Limited


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	 INVESTORS:
  

OPENVIEW VENTURE PARTNERS III, L.P.

		
	By:	 	 OpenView General Partner III, L.P.,
 its general
partner

		
	By:	 	 OpenView Management, LLC,
 its general
partner



  

			
	By:	 	/s/ Rufus C. King
	Name:	 	Rufus C. King
	Title:	 	Chief Legal Officer


  

			
	OPENVIEW AFFILIATES FUND III, L.P.
		
	By:	 	 OpenView General Partner III, L.P.,
 its general
partner

		
	By:	 	 OpenView Management, LLC,
 its general
partner



  

			
	By:	 	/s/ Rufus C. King
	Name:	 	Rufus C. King
	Title:	 	Chief Legal Officer


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	RU-NET TECHNOLOGY CAPITAL LP
		
	By:	 	/s/ Thomas Sima
	Name:	 	Thomas Sima
	Title:	 	Authorized Representative


  

			
	RU-NET TECHNOLOGY CAPITAL AIV LP
		
	By:	 	/s/ Kirill Sheynkman
	Name:	 	Kirill Sheynkman
	Title:	 	Senior Managing Director


  

			
	/s/ Sabri Murat Bicer
	Sabri Murat Bicer


  

			
	/s/ Kirill Sheynkman
	Kirill Sheynkman


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	 INVESTORS:
  

CONTOUR OPPORTUNITY FUND, L.P.

		
	By:	 	/s/ Matt Gonh
	Name:	 	Matt Gonh
	Title:	 	Managing Partner


  

			
	CONTOUR VENTURE PARTNERS, L.P.
		
	By:	 	/s/ Matt Gonh
	Name:	 	Matt Gonh
	Title:	 	Managing Partner


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	 INVESTORS:
  

IA Ventures Strategies Fund I, LP

		
	By:	 	 IA Venture Partners, LLC
 Its General
Partner

		
	By:	 	/s/ Bradford W. Gillespie
	Name:	 	Bradford W. Gillespie
	Title:	 	General Partner


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	 INVESTORS:
  

RRE VENTURES IV, LP

		
	By:	 	 IA Venture Partners, LLC
 Its General
Partner

		
	By:	 	/s/ William D. Porteous
	Name:	 	William D. Porteous
	Title:	 	General Partner and COO


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	 INVESTORS:
  

AP OPPORTUNITY FUND, LLC

		
	By:	 	 Amplify GP Partners, LLC
 Its
Manager

		
	By:	 	/s/ Sunil Dhaliwal
	Name:	 	Sunil Dhaliwal
	Title:	 	Manager


  

			
	AMPLIFY PARTNERS, L.P.
		
	By:	 	 Amplify GP Partners, LLC
 Its General
Partner

		
	By:	 	/s/ Sunil Dhaliwal
	Name:	 	Sunil Dhaliwal
	Title:	 	Manager


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	NYCSEED, LLC
		
	By:	 	 Polytechnic Institute of New York

University
 Its Member



  

			
	By:	 	/s/ Owen Davis
	Name:	 	Owen Davis
	Title:	 	Managing Director


  

			
	/s/ Lawrence Berger
	Lawrence Berger


  

			
	/s/ Laurence Holt
	Laurence Holt


  

			
	/s/ Toby Berger
	Toby Berger


  

			
	/s/ Michael Callahan
	Michael Callahan


  

			
	/s/ Gerard Neumann
	Gerard Neumann


  

			
	/s/ Alexander F. Payne
	Alexander F. Payne


  

			
	/s/ Robert Pasker
	Robert Pasker


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 
			
	LEAVITT-COVINGTON VENTURES, LLC
		
	By:	 	/s/ Stephen S. Leavitt
	Name:	 	Stephen S. Leavitt
	Title:	 	 


  

			
	/s/ Dennis Covington
	Dennis Covington


 SIGNATURE PAGE TO FOURTH
AMENDED AND RESTATED 
 INVESTORS’ RIGHTS
AGREEMENT 












 Schedule A 












 Exhibit A-1 

Form Of Noncompetition, Nonsolicitation, Nondisclosure and 

Proprietary Rights Assignment Agreement 

See attached. 












 PROPRIETARY INFORMATION AND INVENTIONS AGREEMENT 

Effective as of the first date of my employment, the following confirms an agreement between Datadog, Inc., a Delaware corporation (the
“Company”) and the individual identified on the signature page to this Agreement. This Agreement is a material part of the consideration for my employment by the Company. In exchange for the foregoing, and for other good and valuable
consideration, the receipt and sufficiency of which is hereby acknowledged, the parties agree as follows: 
 t. NO CONFLICTS. 1 have not made and
agree not to make any agreement, oral or written, that is in conflict with this Agreement or my employment with the Company. I will not violate any agreement with or the rights of any third party. When acting within the scope of my employment (or
otherwise on behalf of the Company), I will not use or disclose my own or any third party’s confidential information or intellectual property (collectively, “Restricted Materials”), except as expressly authorized by the Company
in writing. Further, I have not retained anything containing any confidential information of a prior employer or other third party, whether or not created by me. 

2. INVENTIONS. 
 a. Definitions.
“Intellectual Property Rights” means any and all patent rights, copyright rights, mask work rights, trade secret rights, sui generis database rights and all other intellectual and industrial property rights of any sort
throughout the world (including any application therefor). “Invention” means any idea, concept, discovery, invention, development, technology, work of authorship, trade secret, software, firmware, tool, process, technique, know-how, data, plan, device, apparatus, specification, design, circuit, layout. mask work, algorithm, program, code, documentation or other material or information, tangible or intangible, whether or not it may be
patented, copyrighted or otherwise protected (including all versions, modifications, enhancements and derivative works thereof). 
 b.
Assignment. To the fullest extent under applicable law, the Company shall own all right, title and interest in and to all Inventions (including all Intellectual Property Rights therein or related thereto) that are made, conceived or reduced to
practice, in whole or in part, by me during the term of my employment with the Company and which arise out of research or other activity conducted by, for or under the direction of the Company (whether or not conducted at the Company’s
facilities, during working hours or using Company assets), or which are useful with or relate directly or indirectly to any “Company Interest” (meaning any product, service, other Invention or Intellectual Property Right that is sold,
leased, used or under consideration or development by the Company). I will promptly disclose and provide all of the foregoing Inventions (the “Assigned Inventions”) to the Company. I hereby make and agree to make all assignments to
the Company necessary to accomplish the foregoing ownership. Assigned Inventions shall not include any Invention (i) that I develop entirely on my own time, (ii) without use of any Company assets and (iii) which is not useful
with and does not relate to any Company Interest. 
 c. Assurances. I will further assist the Company, at its expense, to evidence,
record and perfect such assignments, and to perfect, obtain, maintain, enforce and defend any rights specified to be so owned or assigned. I hereby irrevocably designate and appoint the Company as my agent and attorney-in-fact to act for and in my behalf to execute and file any document and to do all other lawfully permitted acts to further the purposes of the foregoing with the same legal force and effect as if
executed by me. 
 d. Other Inventions. If I wish to clarify that something created by me prior to my employment that relates to the
Company’s actual or proposed business is not within the scope of this Agreement, I have listed it on Appendix A. If (i) I use or disclose any Restricted Materials when acting within the scope of my employment (or otherwise on behalf of the
Company), or (ii) any Assigned Invention cannot be fully made, used, reproduced or otherwise exploited without using or violating any Restricted Materials, I hereby grant and agree to grant to the Company a perpetual, irrevocable, worldwide,
royalty-free, non-exclusive, sublicensable right and license to exploit and exercise all such Restricted Materials and Intellectual Property Rights therein. I will not use or disclose any Restricted Materials
for which I am not fully authorized to grant the foregoing license. 
 e. Moral Rights. To the extent allowed by applicable
law, the terms of this Section 2 include all rights of paternity, integrity, disclosure and withdrawal and any other rights that may be known as or referred to as moral rights, artist’s rights, droit moral or the like (collectively,
“Moral Rights”). To the extent I retain any such Moral Rights under applicable law, I hereby ratify and consent to any action that may be taken with respect to such Moral Rights by or authorized by the Company and agree not to assert any
Moral Rights with respect thereto. I will confirm any such ratification, consent or agreement from time to time as requested by the Company. 












 3. PROPRIETARY INFORMATION. I agree that all Assigned Inventions and all other financial, business,
legal and technical information including, without limitation, the identity of and information relating to the Company’s employees, Affiliates and Business Partners (as such terms are defined below), which I develop, learn or obtain during my
employment or that are received by or for the Company in confidence, constitute “Proprietary Information”. I will hold in strict confidence and not disclose or, except within the scope of my employment, use any Proprietary Information.
Proprietary Information will not include information that I can document is or becomes readily publicly available without restriction through no fault of mine. Upon termination of my employment, I will promptly return to the Company all items
containing or embodying Proprietary Information (including all copies), except that I may keep my personal copies of (a) my compensation records, (b) materials distributed to shareholders generally and (c) this Agreement. I also
recognize and agree that l have no expectation of privacy with respect to the Company’s networks, telecommunications systems or information processing systems (including, without limitation, stored computer files, electronic mail messages and
voice messages), and that my activity and any files or messages on or using any of those systems may be monitored at any time without notice. 
 4.
RESTRICTED ACTIVITIES. For the purposes of this Section 4, the term Company includes the Company and ·all other persons or entities that control, are controlled by or are under common control with the Company
(“Affiliates”). 
 a. Definitions. “Any Capacity” includes, without limitation, to
(i) be an owner, founder, shareholder, partner, member, advisor, director, consultant, contractor, agent, employee, affiliate or co-venturer, (ii) otherwise invest, engage or
participate in, (iii) be compensated by or (iv) prepare to be or do any of the foregoing or assist any third party to do so; provided, Any Capacity will not include being a holder of less than one percent (1%) of the outstanding
equity of a public company. “Business Partner” means any past, present or prospective customer, vendor, supplier, distributor or other business partner of the Company with which I have contact (or knowledge of) during my employment.
Cause means to recruit, employ, retain or otherwise solicit, induce or influence (or to attempt to do so). Solicit means to (i) service, take orders from or solicit the business or patronage of any Business Partner
for myself or any other person or entity, (ii) divert, entice or otherwise take away from the Company the business or patronage of any Business Partner, or to attempt to do so, or (iii) to solicit, induce or encourage any Business Partner
to terminate or reduce its relationship with the Company. 
 b. Acknowledgments. I acknowledge and agree that (i) the
Company’s business is highly competitive, secrecy of the Proprietary Information is of the utmost importance to the Company and I will learn and use Proprietary Information in performing my work for the Company and (ii) my
position may require me to establish goodwill with Business Partners and employees on behalf of the Company and such goodwill is extremely important to the Company’s success. 

c. As an Employee. During my employment with the Company, I will not directly or indirectly: (i) Cause any person to leave their
employment with the Company (other than terminating subordinate employees in the course of my duties for the Company); (ii) Solicit any Business Partner; or (iii) act in Any Capacity in or with respect to any commercial activity which competes
or is reasonably likely to compete with any business that the Company conducts, or demonstrably anticipates conducting, at any time during my employment (a “Competing Business”). 

d. After Termination. For the period of one year immediately following termination of my employment with the Company (for any or
no reason, whether voluntary or involuntary), I will not directly or indirectly: (i) Cause any person to leave their employment with the Company; or (ii) Solicit any Business Partner or (iii) act in Any Capacity in or with respect to
any Competing Business located within the state of New York, the rest of the United States, or anywhere else in the world. 
 e.
Enforcement. I understand that the restrictions set forth in this Section 4 are intended to protect the Company’s interest in its Proprietary Information and established relationships and goodwill with employees and Business Partners,
and I agree that such restrictions are reasonable and appropriate for this purpose. If at any time 












 
any of the provisions of this Section 4 are deemed invalid or unenforceable or are prohibited by the laws of the state or place where they are to be entered into, performed or enforced, by
reason of being vague or unreasonable as to duration or geographic scope or scope of activities restricted, or for any other reason, such provisions shall be considered divisible and shall become and be immediately amended to include only such
restrictions and to such extent as shall be deemed to be reasonable and enforceable by the court or other body having jurisdiction over this Agreement. The Company and I agree that the provisions of this Section 4, as so amended, shall be valid
and binding as though any invalid or unenforceable provision had not been included. 
 5. EMPLOYMENT AT WILL. I agree that this Agreement is
not an employment contract for any particular term. I have the right to resign and the Company has the right to terminate my employment at will, at any time, for any or no reason, with or without cause. This Agreement does not purport to set forth
all of the terms and conditions of my employment, and as an employee of the Company. I have obligations to the Company which are not described in this Agreement. However, the terms of this Agreement govern over any such terms that are inconsistent
with this Agreement, and supersede the terms of any similar form that I may have previously signed. This Agreement can only be changed by a subsequent written agreement signed by the President of the Company (or authorized designee). 

6. SURVIVAL. I agree that my obligations under Sections 2, 3 and 4 of this Agreement shall continue in effect after termination of my employment,
regardless of the reason, and whether such termination is voluntary or involuntary, and that the Company is entitled to communicate my obligations under this Agreement to any of my potential or future employers. My obligations under Sections 2, 3
and 4 also shall be binding upon my heirs, executors, assigns and administrators, and shall inure to the benefit of the Company, its Affiliates, successors and assigns. This Agreement may be freely assigned by the Company to any third party. 

7. GOVERNING LAW; REMEDIES. Any dispute in the meaning, effect or validity of this Agreement shall be resolved in accordance with the laws of the state
of New York without regard to the conflict of laws provisions thereof. I acknowledge and agree that the consideration given for this Agreement is valid and sufficient. I further acknowledge and agree that the enforceability of this Agreement and the
validity of its consideration shall not be affected by any change(s) in my working conditions, including but not limited to promotion, demotion, reduction in compensation, increase in compensation, change in compensation structure, change in title,
change in location of employment, and change of Company name, structure or ownership. The failure of either party to enforce its rights under this Agreement at any time for any period shall not be construed as a waiver of such rights. Unless
expressly provided otherwise, each right and remedy in this Agreement is in addition to any other right or remedy, at law or in equity, and the exercise of one right or remedy will not be deemed a waiver of any other right or remedy. I further agree
that if one or more provisions of this Agreement are held to be illegal or unenforceable under applicable law, such illegal or unenforceable portion shall be limited or excluded from this Agreement to the minimum extent required so that this
Agreement shall otherwise remain in full force and effect and enforceable. I also understand that any breach or threatened breach of this Agreement will cause irreparable harm to the Company for which damages would not be a adequate remedy,
and, therefore, the Company will be entitled to injunctive relief with respect thereto (without the necessity of posting any bond) in addition to any other remedies. 

[Remainder of Page Intentionally Left Blank.) 












 Exhibit A-2 

Form Of Nonsolicitation, Nondisclosure and 

Proprietary Rights Assignment Agreement 

See attached. 












 Exhibit B 

Metric Schedule 
 See attached.













 Generic information and Definition required by Index Ventures 

 

			
	 Metric
	  	 Definition

	Employees at end of quarter (eoq)	  	 •  Full time employee (FTE) equivalent

	  	 •  How many people are working in the business, both permanent and temporary
(including part time)

	Net Revenues	  	 •  Income that the business generates

	Operating Costs	  	 •  Net Revenues – EBITDA

	EBITDA	  	 •  Earnings before interests, tax, depreciation, amortization

	Operating cash Burn / generation during the quarter	  	 •  Cash at hand current period – Cash at hand previous period +/- non
operational cash outflow or inflow (financing, investing)

	Cash at hand – eoq	  	 •  Net cash position:

	  	 ○   Cash at bank

	  	 ○   Plus short term assets (under 6 months)

	  	 ○   Less short term debt (under 6 months)


 Schedule to be filled by the company 
  

			
		  	QX
	 FTE
	  	
	 Net Revenues
	  	
	 Operating Costs
	  	
	 EBITDA
	  	
	 Operating cash burn/generation
	  	
	 Cash at hand