Document:

EX-10.2

 Exhibit 10.2 

Execution Version 
 FORM
OF SUPPORT AGREEMENT 
 This SUPPORT AGREEMENT (this “Agreement”), dated as of December [•], 2020, is entered into
by and among Northern Star Acquisition Corp., a Delaware corporation (“Parent”), Barkbox Inc., a Delaware corporation (the “Company”), and each undersigned stockholder (any such stockholder,
the “Stockholder” and, together with Parent, each a “Party” and collectively, the “Parties”) of the Company. Capitalized terms used herein and not otherwise defined shall have the meaning
ascribed to them in the Agreement and Plan of Reorganization, dated as of December 16, 2020 (as amended, supplemented or otherwise modified from time to time, the “Merger Agreement”), by and Parent, NSAC Merger Sub Corp., a Delaware
corporation (“Merger Sub”), and the Company. 
 RECITALS 

WHEREAS, as of the date of this Agreement, the Stockholder is the record holder, beneficial (as such term is defined in Rule 13d-3 under the Exchange Act, which meaning shall apply for all purposes of this Agreement whenever the term “beneficial” or “beneficially” is used) owner, and has full voting power over the
number of shares of Company Stock (the “Shares”) set forth on the Stockholder’s signature page hereto; 
 WHEREAS, the
Company, Parent and Merger Sub have entered into the Merger Agreement in the form attached hereto as Annex A, which provides for the merger of Merger Sub with and into the Company (the “Merger”), with the Company
surviving the Merger, pursuant to the provisions of the DGCL; 
 WHEREAS, the Stockholder acknowledges that, as a condition and material
inducement to Parent and Merger Sub’s willingness to enter into the Merger Agreement, Parent has required that concurrently with the execution and delivery of the Merger Agreement, certain Company Stockholders specified in the Merger Agreement
enter into this Agreement, agreeing to, among other things, (1) vote all of the Stockholder’s Subject Shares (as defined below) in favor of the adoption of the Merger Agreement, and (2) vote all of the Stockholder’s Subject
Shares in favor of the termination of the Second Amended and Restated Investors’ Rights Agreement, dated as of May 16, 2016, by and among the Company and the Investors listed on Schedule A thereto, as amended, the Second Amended and
Restated Voting Agreement, dated as of May 16, 2016, by and among the Company, the Investors listed on Schedule A thereto and the Key Holders listed on Schedule B thereto, as amended, and Second Amended and Restated Right of First Refusal and Co-Sale Agreement, dated as of May 16, 2016, by and among the Company, the Investors listed on Schedule A thereto and the Key Holders listed on Schedule B thereto, as amended (collectively, the
“Financing Documents”), and, in order to induce Parent and Merger Sub to enter into the Merger Agreement and consummate the Merger and the other transactions contemplated by the Merger Agreement, the Stockholder is willing to enter
into this Agreement; 

 WHEREAS, Parent desires that the Stockholder agree, and the Stockholder is willing to agree,
subject to the limitations herein, (1) not to Transfer (as defined below) any of its Shares, (2) to execute and deliver written consents (to the extent requested by the Company) and otherwise vote its Subject Shares (or cause its Subject
Shares to be voted) in a manner so as to facilitate consummation of the Merger and the other transactions contemplated by the Merger Agreement, and (3) to undertake certain additional obligations pursuant to this Agreement; 

WHEREAS, concurrently with the execution and delivery of this Agreement, the Stockholder is executing and delivering the Lock-Up Agreement in the form attached hereto as Annex C; and 
 WHEREAS, Parent and the
Stockholder desire to make certain representations, warranties, covenants and agreements in connection with this Agreement; 
 NOW,
THEREFORE, in consideration of the foregoing premises and the representations, warranties, covenants and agreements set forth in this Agreement, the Parties agree as follows: 

ARTICLE 1 
 VOTING
AND TRANSFER OF SHARES 
 Section 1.01 Voting. 

(a)     The Stockholder irrevocably and unconditionally agrees, during the period beginning on the date of this Agreement and ending on
the Expiration Date (the “Applicable Period”), at each meeting of the Company Stockholders (a “Meeting”) and at each adjournment or postponement thereof, and in connection with each action or approval by
consent in writing of the Company Stockholders (a “Consent Solicitation”), which written consent shall be delivered promptly, and in any event within twenty four (24) hours, after the Company requests such delivery, to cause to
be present in person or represented by proxy and to vote or cause to be voted (or express consent or dissent in writing, as applicable) that number of Shares set forth on the Stockholder’s signature page hereto and any additional Shares that
are hereafter held of record or beneficially owned by the Stockholder (collectively, the “Subject Shares”) that are entitled to vote (or express consent or dissent in writing, as applicable), in each case as follows: 

 

	 	(i)	 in favor of any proposal for Company Stockholders to adopt the Merger Agreement (including by executing and
delivering, and not revoking or attempting or purporting to revoke, any Written Consents) and approving any other matters necessary for consummation of the transactions contemplated by the Merger Agreement, including the Merger, and the termination
of the Financing Documents and any other agreements listed on Schedule 6.3(g) of the Company Schedules to the Merger Agreement to which such Stockholder is a party; 

 

	 	(ii)	 in favor of any proposal to adjourn a Meeting at which there is a proposal for Company Stockholders to adopt
the Merger Agreement to a later date if there are not sufficient votes to adopt the proposals described in clause (i) and (ii) above or if there are not sufficient Shares present in person or represented by proxy at such Meeting to constitute a
quorum; 

  

	 	(iii)	 against any proposal, offer or submission with respect to a competing transaction described in Section 4.3
(No Solicitation) of the Merger Agreement (a “Competing Transaction”) or the adoption of any agreement to enter into a Competing Transaction; 

	 	(iv)	 against any proposal for any amendment or modification of the Company’s Charter Documents that would
change the voting rights of any Shares or the number of votes required to approval any proposal, including the vote required to adopt the Merger Agreement; and 

 

	 	(v)	 against any action, transaction, agreement or proposal that would, or would reasonably be expected to
(A) result in a breach of any representation, warranty, covenant or any other obligation or agreement of the Company under the Merger Agreement or any agreement ancillary thereto or the Stockholder under this Agreement or any of the conditions
to the consummation of the Merger under the Merger Agreement not being fulfilled on a timely basis, (B) prevent, delay or impair consummation of the Merger or dilute, in any material respect, the benefit of the Merger to Parent, or
(C) facilitate any proposal, offer or submission with respect to a Competing Transaction or any agreement to enter into a Competing Transaction. 

(b)     Any vote required to be cast or consent or dissent in writing required to be expressed pursuant to this
Section 1.01 shall be cast or expressed in accordance with the applicable procedures relating thereto so as to ensure that it is duly counted for purposes of determining that a quorum is present (if applicable) and for
purposes of recording the results of that vote or Consent Solicitation. For the avoidance of doubt, nothing contained herein requires the Stockholder (or entitles any proxy of the Stockholder) to convert, exercise or exchange any options, warrants
or convertible securities in order to obtain any underlying Shares. 
 (c)     The Stockholder agrees not to enter into any commitment,
agreement, understanding or similar arrangement with any Person to vote or give voting instructions or express consent or dissent in writing in any manner inconsistent with the terms of this Section 1.01. 

Section 1.02 No Transfers. During the Applicable Period, the Stockholder agrees not to, directly or indirectly, in one or more transactions,
whether by merger, consolidation, division, operation of law, or otherwise (including by succession or otherwise by operation of applicable Legal Requirements): (a) sell, convey, assign, transfer, exchange, pledge, hypothecate or otherwise encumber
or dispose of any Subject Shares (or any right, title or interest therein) or any rights to acquire any securities or equity interests of the Company; (b) deposit any Subject Shares or any rights to acquire any securities or equity interests of
the Company into a voting trust or enter into a voting agreement or any other arrangement with respect to any Subject Shares or any rights to acquire any securities or equity interests of the Company or grant or purport to grant any proxy or power
of attorney with respect thereto that is inconsistent with this Support Agreement; (c) enter into any contract, option, call or other arrangement or undertaking, whether or not in writing, with respect to the direct or indirect sale,
conveyance, assignment, transfer, exchange, pledge, hypothecation or other encumbrance or disposition, or limitation on the voting rights, of any Subject Shares (or any right, title or interest therein) or any rights to acquire any securities or
equity interests of the Company; (d) otherwise grant, permit or suffer the creation of any Encumbrances on any Subject Shares, other than Permitted Encumbrances; or (e) approve or commit or agree to take any of the foregoing actions (any
action described in the immediately preceding sentence, a “Transfer”); provided, however, that the foregoing shall not prohibit Transfers (i) between the Stockholder and any Affiliate of the Stockholder,
(ii) if the Stockholder is an individual, to a trust for the benefit of the Stockholder or to any member of a Stockholder’s immediate family or a trust for the benefit of such immediate family member or (iii) if the

 
Stockholder is an individual, by will, other testamentary document or under the laws of intestacy upon the death of Stockholder, in each case, so long as, prior to and as a condition to the
effectiveness of any such Transfer, such Affiliate or transferee executes and delivers to Parent a joinder to this Agreement in the form attached hereto as Annex B. Any Transfer or action in violation of this
Section 1.02 shall be void ab initio. If any involuntary Transfer of any of Subject Shares occurs, the transferee (and all transferees and subsequent transferees of such transferee) shall take and hold such Subject
Shares subject to all of the restrictions, liabilities and rights under this Agreement, which shall continue in full force and effect during the Applicable Period. 

Section 1.03 Stop Transfer. The Stockholder shall not request that the Company register any transfer of any certificate or book-entry Share or
other uncertificated interest representing any Subject Shares made in violation of the restrictions set forth in Section 1.02 during the Applicable Period and hereby authorizes and instructs the Company to instruct its
transfer agent to enter a stop transfer order with respect to all of the Subject Shares, subject to the provisions hereof; provided, that any such stop transfer order will immediately be withdrawn and terminated by the Company following the
termination of this Agreement. 
 Section 1.04 Waiver of Appraisal Rights. The Stockholder hereby agrees not to assert, exercise or perfect,
directly or indirectly, and irrevocably and unconditionally waives, any appraisal rights (including under Section 262 of the DGCL) with respect to the Merger and any rights to dissent with respect to the Merger (collectively, “Appraisal
Rights”). 
 Section 1.05 Public Announcements; Filings; Disclosures. 

(a) The Stockholder (and the Stockholder’s controlled Affiliates) shall not issue any press release or make any other public announcement or public
statement (a “Public Communication”) with respect to this Agreement, the Merger Agreement, or the transactions contemplated hereby or thereby, without the prior written consent of Parent (such consent not to be unreasonably
withheld, conditioned or delayed), except as required by applicable Legal Requirements, in which case the Stockholder shall use its reasonable best efforts to provide Parent and Parent’s legal counsel with a reasonable opportunity to review and
comment on such Public Communication in advance of its issuance and shall give reasonable and good faith consideration to any such comments. 
 (b) The
Stockholder hereby consents to and authorizes the Company and Parent to publish and disclose in any Public Communication or in any disclosure required by the SEC and in the Proxy Statement/Prospectus prepared by Parent and filed with the SEC
relating to the Special Meeting the Stockholder’s identity and ownership of Subject Shares and the Stockholder’s obligations under this Agreement (the “Stockholder Information”), consents to the filing of this
Agreement to the extent required by applicable Legal Requirements to be filed with the SEC or any regulatory authority relating to the Merger, and agrees to cooperate with Parent in connection with such filings, including providing Stockholder
Information reasonably requested by Parent. 
 Section 1.06 Non-Solicitation. The Stockholder
acknowledges that the Stockholder has read Section 4.3 of the Merger Agreement. In addition, the Stockholder agrees that the restrictions imposed on the Company pursuant to Section 4.3 of the Merger Agreement shall be binding upon the
Stockholder mutatis mutandis and further agrees not to take (and agrees to cause its Affiliates and its and their Representatives not to take), directly or indirectly, any action that would violate Section 4.3 of the Merger Agreement if
such action were taken by the Company. 

 Section 1.07 No Agreement as Director or Officer. The Stockholder is entering into this
Agreement solely in the Stockholder’s capacity as record or beneficial owner of Subject Shares and nothing herein is intended to or shall limit or affect any actions taken by the Stockholder or any employee, officer, director (or person
performing similar functions), partner or other Affiliate (including, for this purpose, any appointee or representative of the Stockholder to the board of directors of the Company) of the Stockholder, solely in his or her capacity as a director or
officer of the Company (or a Subsidiary of the Company) or other fiduciary capacity for the Company Stockholders. 
 Section 1.08 Acquisition of
Additional Shares. In the event that, during the period commencing on the date hereof and ending at the Expiration Date, (a) any Subject Shares are issued to Stockholder after the date of this Agreement pursuant to any stock dividend, stock
split, recapitalization, reclassification, combination or exchange of Subject Shares or otherwise, (b) Stockholder purchases or otherwise acquires beneficial ownership of any Subject Shares or (c) Stockholder acquires the right to vote or
share in the voting of any Subject Shares (collectively the “New Securities”), then such New Securities acquired or purchased by such Company Stockholder shall be subject to the terms of this Agreement to the same extent as if they
constituted the Subject Shares owned by Stockholder as of the date hereof. 
 Section 1.09 No Litigation. The Stockholder hereby agrees not to
commence, maintain or participate in, or facilitate, assist or encourage, and agrees to take all actions necessary to opt out of any class in any class action with respect to, any claim, derivative or otherwise, suit, proceeding or cause of action,
in law or in equity, in any court or before any Governmental Entity (a) challenging the validity of, or seeking to enjoin or delay the operation of, any provision of this Agreement or the Merger Agreement or the transactions contemplated hereby
or thereby (including any claim seeking to enjoin or delay the consummation of the Merger), (b) alleging a breach of any fiduciary duty of any Person or alleging that any Person aided or abetted any breach of any fiduciary duty of any Person in
connection with this Agreement or the Merger Agreement or the transactions contemplated thereby or thereby, (c) seeking Appraisal Rights in connection with the Merger or (d) otherwise relating to the Merger Agreement, this Agreement or the
Merger or other transactions contemplated hereby or thereby. Notwithstanding the foregoing, nothing herein shall be deemed to prohibit the Stockholder from enforcing the Stockholder’s rights under this Agreement or the Stockholder’s right
to receive the Per Share Merger Consideration. 
 Section 1.10 Further Assurances. The Stockholder shall execute and deliver, or cause to be
executed and delivered, such further certificates, instruments and other documents and to take such further actions as Parent may reasonably request for the purpose of effectively carrying out the transactions contemplated by this Agreement and the
Merger Agreement. 

 ARTICLE 2 

REPRESENTATIONS AND WARRANTIES OF THE STOCKHOLDER 

The Stockholder hereby represents and warrants to Parent and the Company as follows: 

Section 2.01 Organization; Authorization. In the event the Stockholder is an individual, the Stockholder has full power, right and legal capacity
to execute and deliver this Agreement, and to perform his or her obligations hereunder. In the event the Stockholder is a legal entity, (a) the Stockholder is a legal entity duly organized, validly existing and in good standing under the
applicable Legal Requirements of the Stockholder’s jurisdiction of its organization, (b) the Stockholder has all requisite corporate or similar power and authority and has taken all corporate or similar action necessary in order to execute
and deliver this Agreement, to perform the Stockholder’s obligations under this Agreement and consummate the transactions contemplated by this Agreement, and (c) no approval by any holder of the Stockholder’s equity interests is
necessary to approve this Agreement. This Agreement has been duly authorized, executed and delivered by the Stockholder and, in the event the Stockholder is an individual and is married and any of the Stockholder’s Subject Shares constitute
community property or spousal approval is otherwise required in order for this Agreement to be a valid and binding obligation of the Stockholder, this Agreement has been duly authorized, executed and delivered by or on behalf of the
Stockholder’s spouse, and this Agreement constitutes a valid and binding agreement of the Stockholder enforceable against the Stockholder in accordance with its terms, except as may be limited by bankruptcy, insolvency, reorganization,
moratorium or other similar laws affecting the enforcement of creditors’ rights generally and by general principles of equity. 
 Section 2.02
Governmental Filings; No Violations; Certain Contracts. The execution, delivery and performance by the Stockholder of this Agreement and the consummation by the Stockholder of the transactions contemplated hereby do not and will not
(i) conflict with or violate any United States or non-United States statute, law, ordinance, regulation, rule, code, executive order, injunction, judgment, decree or other order applicable to the
Stockholder, (ii) require any consent, approval or authorization of, declaration, filing or registration with, or notice to, any person or entity, (iii) result in the creation of any encumbrance on any Shares (other than under this
Agreement) or (iv) conflict with or result in a breach of or constitute a default under any provision of the Stockholder’s governing documents or any agreement (including any voting agreement) to which the Stockholder is a party. 

Section 2.03 Litigation. As of the date of this Agreement, except as would not, individually or in the aggregate, reasonably be expected to
prevent, delay or impair the ability of the Stockholder perform its obligations under this Agreement or to consummate the transactions contemplated by this Agreement (a) there is no action, suit, demand, complaint, litigation, review, audit,
hearing, arbitration, proceeding, investigation or similar dispute by or before any Governmental Entity or otherwise pending or, to the knowledge of the Stockholder, threatened against the Stockholder or any of its Affiliates and (b) neither
the Stockholder nor any of its Affiliates is a party to or subject to the provisions of any judgment, order, writ, injunction, decree or award of any Governmental Entity. 

 Section 2.04 Ownership of Company Stock; Voting Power. The Stockholder’s signature page
hereto correctly sets forth the number of the Stockholder’s Subject Shares as of the date of this Agreement and, other than such Subject Shares, as of the date of this Agreement, there are no Company securities (or any securities convertible,
exercisable or exchangeable for, or rights to purchase or acquire, any Company securities) held of record or beneficially owned by the Stockholder or in respect of which the Stockholder has full voting power. The Stockholder has not made any
Transfer of Subject Shares and the Stockholder is the record holder and beneficial owner of all of its Subject Shares and has, and shall have throughout the Applicable Period, good and valid title to the Subject Shares, full voting power and power
of disposition with respect to all such Subject Shares free and clear of any liens, security interests, claims, pledges, proxies, options, right of first refusals, voting restrictions, limitations on dispositions, voting trusts or agreements,
options or any other encumbrances or restrictions on title, transfer or exercise of any rights of a stockholder in respect of such Subject Shares (collectively, “Encumbrances”), except for any such Encumbrance that (a) may be
imposed pursuant to (i) this Agreement, the Merger Agreement and the transactions contemplated hereby and thereby, (ii) any applicable restrictions on transfer under U.S. state or federal securities or “blue sky” applicable Legal
Requirements or (iii) the Company’s Charter Documents or the terms of any customary custody or similar agreement applicable to Subject Shares held in brokerage accounts or (b) would not, individually or in the aggregate, reasonably be
expected to prevent, delay or impair the ability of the Stockholder perform its obligations under this Agreement or to consummate the transactions contemplated by this Agreement (“Permitted Encumbrances”). No Person has any
contractual or other right or obligation to purchase or otherwise acquire any of the Stockholder’s Subject Shares other than pursuant to the Merger Agreement or as set forth in the Company’s Charter Documents. 

Section 2.05 Reliance. The Stockholder understands and acknowledges that Parent and Merger Sub are relying upon the Stockholder’s execution,
delivery and performance of this Agreement and upon the representations and warranties and covenants of the Stockholder contained in this Agreement. 

Section 2.06 Finder’s Fees. No agent, broker, investment banker, finder or other intermediary is or shall be entitled to any fee or
commission or reimbursement of expenses from Parent, Merger Sub or the Company or any of their respective Affiliates in respect of this Agreement based upon any arrangement or agreement made by or on behalf of the Stockholder. 

Section 2.07 Proxy Statement. None of the information supplied or to be supplied by the Stockholder for inclusion or incorporation by reference in
the Proxy Statement/Prospectus and any amendment or supplement thereto will, at the date of mailing to the Parent Stockholders and at the time of the Special Meeting contain any untrue statement of a material fact or omit to state any material fact
required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading. 

Section 2.08 Other Agreements. The Stockholder has not taken or permitted any action that would or would reasonably be expected to
(a) constitute or result in a breach hereof, (b) make any representation or warranty of the Stockholder set forth herein untrue or inaccurate or (c) otherwise restrict, limit or interfere with the performance of this Agreement, the
Merger Agreement or the transactions contemplated by this Agreement or the Merger Agreement. 

 Section 2.09 Stockholder Has Adequate Information. The Stockholder acknowledges that the
Stockholder is a sophisticated investor with respect to the Stockholder’s Subject Shares and has adequate information concerning the business and financial condition of the Company and Parent to make an informed decision regarding the
transactions contemplated by this Agreement and has, independently and without reliance upon Parent, the Company or any Affiliate of Parent and the Company, and based on such information as the Stockholder has deemed appropriate, made the
Stockholder’s own analysis and decision to enter into this Agreement. The Stockholder acknowledges that the Stockholder has received and reviewed this Agreement and the Merger Agreement and has had the opportunity to seek independent legal
advice prior to executing this Agreement. 
 Section 2.10 No Other Representations or Warranties. Except for the representations and warranties
made by the Stockholder in this Article 2, neither the Stockholder nor any other Person makes any express or implied representation or warranty to Parent in connection with this Agreement or the transactions contemplated by
this Agreement, and the Stockholder expressly disclaims any such other representations or warranties. 
 ARTICLE 3 

REPRESENTATIONS AND WARRANTIES OF PARENT 

Each of Parent and the Company represent and warrant to the Stockholder as follows: 

Section 3.01 Organization. Such Party is a legal entity duly organized, validly existing and in good standing under the laws of the State of
Delaware. 
 Section 3.02 Corporate Authority. Such Party has all requisite corporate power and authority and has taken all corporate or similar
action necessary in order to execute and deliver this Agreement, to perform its obligations under this Agreement and to consummate the transactions contemplated by this Agreement. This Agreement has been duly executed and delivered by such Party and
constitutes a valid and binding agreement of such Party enforceable against such Party in accordance with its terms, except as may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting the enforcement of
creditors’ rights generally and by general principles of equity. 
 Section 3.03 No Other Representations or Warranties. Except for the
representations and warranties made by such Party in this Article 3, neither such Party nor any other Person makes any express or implied representation or warranty to the Stockholder in connection with this Agreement or
the transactions contemplated by this Agreement, and the Stockholder expressly disclaims reliance upon, and the Stockholder acknowledges and agrees that such Party expressly disclaims, any such other representations or warranties. 

ARTICLE 4 
 GENERAL
PROVISIONS 
 Section 4.01 Termination. This Agreement, including the voting agreements contemplated by this Agreement, shall automatically
be terminated at the earliest to occur of: (a) the Effective Time; (b) the termination of the Merger Agreement pursuant to Article VII thereof; or (c) the effective date of a written agreement duly executed and delivered by Parent,
the Company and the Stockholder terminating this Agreement (the date and time at which the earlier of clause (a), (b), and (c) occurs being, the “Expiration Date”); provided, however, that in the case
of any 

 
termination pursuant to clause (a), Section 1.04 (Waiver of Appraisal Rights), Section 1.05 (Public Announcements; Filings;
Disclosure), Section 1.09 (No Litigation) and Section 1.10 (Further Assurances) and this Article 4 shall survive such termination. Nothing set forth in this
Section 4.01 or elsewhere in this Agreement shall relieve any Party of any liability or damages to any other Party for any breach of this Agreement by such Party prior to such termination or fraud in connection with,
arising out of or otherwise related to the representations and warranties set forth in this Agreement or any instrument or other document delivered pursuant to this Agreement. 

Section 4.02 Notices. All notices and other communications between the Parties shall be in writing and shall be deemed to have been duly given
(i) when delivered in person, (ii) when delivered after posting in the United States mail having been sent registered or certified mail return receipt requested, postage prepaid, (iii) when delivered by FedEx or other nationally
recognized overnight delivery service or (iv) when e-mailed during normal business hours (and otherwise as of the immediately following Business Day), addressed as follows: 

If to Parent: 
 Northern Star
Acquisition Corp. 
 c/o Graubard Miller 

The Chrysler Building 
 405
Lexington Avenue, 11th Floor 
 New York, New York 10174 

Attention: Jonathan J. Ledecky 

E-mail: jledecky@hockeyny.com 

with a copy to (which shall not constitute notice): 

Graubard Miller 
 The Chrysler
Building 
 405 Lexington Avenue, 11th Floor 

New York, New York 10174 

Attention: David Alan Miller / Jeffrey M. Gallant 

E-mail: dmiller@graubard.com / jgallant@graubard.com 

and: 
 Skadden, Arps, Slate,
Meagher & Flom LLP 
 525 University Avenue, Suite 1400 

Palo Alto, California 94301 

Attention: Michael Mies 
 E-mail: michael.mies@skadden.com 
 and: 

Gunderson Dettmer 
 1250
Broadway, 23rd Floor 
 New York, New York 10001 

Attention: Brooks Stough / Melissa B. Marks / John Olson 

E-mail: bstough@gunder.com / mmarks@gunder.com / jolson@gunder.com 

If to the Stockholder, to the Stockholder’s address set forth on a signature page hereto. 

 Section 4.03 Expenses. Except as otherwise provided herein or in the Merger Agreement, all costs
and expenses incurred in connection with this Agreement and the transactions contemplated hereby shall be paid by the Party incurring such costs and expenses, whether or not the Merger is consummated. 

Section 4.04 Counterparts; Electronic Delivery. This Agreement and each other document executed in connection with the transactions contemplated
hereby, and the consummation thereof, may be executed in one or more counterparts, all of which shall be considered one and the same document and shall become effective when one or more counterparts have been signed by each of the Parties and
delivered to the other Party, it being understood that all parties need not sign the same counterpart. Delivery by electronic transmission to counsel for the other Party of a counterpart executed by a Party shall be deemed to meet the requirements
of the previous sentence. 
 Section 4.05 Entire Agreement; Third Party Beneficiaries. This Agreement and the documents and instruments and
other agreements between the Parties as contemplated by or referred to herein, including the annexes hereto (a) constitute the entire agreement between the Parties with respect to the subject matter hereof and supersede all prior agreements and
understandings, both written and oral, between the Parties and any of their respective Affiliates with respect to the transactions contemplated hereby; and (b) are not intended to confer upon any other person any rights or remedies hereunder
(except as specifically provided in this Agreement. No representations, warranties, covenants, understandings, agreements, oral or otherwise, relating to the transactions contemplated by this Agreement exist between the parties except as expressly
set forth or referenced in this Agreement and the Merger Agreement. 
 Section 4.06 Severability. In the event that any provision of this
Agreement, or the application thereof, becomes or is declared by a court of competent jurisdiction to be illegal, void or unenforceable, the remainder of this Agreement will continue in full force and effect and the application of such provision to
other persons or circumstances will be interpreted so as reasonably to effect the intent of the parties hereto. The Parties further agree to modify this Agreement to replace such void or unenforceable provision of this Agreement with a valid and
enforceable provision that will achieve, to the extent possible, the economic, business and other purposes of such void or unenforceable provision. 

Section 4.07 Other Remedies; Specific Performance. Except as otherwise provided herein, any and all remedies herein expressly conferred upon a
Party will be deemed cumulative with and not exclusive of any other remedy conferred hereby, or by law or equity upon such Party, and the exercise by a Party of any one remedy will not preclude the exercise of any other remedy. The Parties hereto
agree that irreparable damage would occur in the event that any of the provisions of this Agreement were not performed in accordance with their specific terms or were otherwise breached. It is accordingly agreed that the Parties shall be entitled to
an injunction or injunctions to prevent breaches of this Agreement and to enforce specifically the terms and provisions hereof in any court of the United States or any state having jurisdiction, this being in addition to any other remedy to which
they are entitled at law or in equity. Each Party agrees that it will not 

 
oppose the granting of specific performance and other equitable relief on the basis that the other Party has an adequate remedy at law or that an award of specific performance is not an
appropriate remedy for any reason at law or equity. The Parties acknowledge and agree that any Party seeking an injunction to prevent breaches of this Agreement and to enforce specifically the terms and provisions of this Agreement in accordance
with this Section shall not be required to provide any bond or other security in connection with any such injunction. 
 Section 4.08 Governing
Law. This Agreement shall be governed by and construed in accordance with the internal law of the State of Delaware regardless of the law that might otherwise govern under applicable principles of conflicts of law thereof. 

Section 4.09 Consent to Jurisdiction; WAIVER OF TRIAL BY JURY. Each of the Parties hereto irrevocably consents to the exclusive jurisdiction and
venue of the Delaware Chancery Court (or, if the Delaware Chancery Court shall be unavailable, any other court in the State of Delaware or, in the case of claims to which the federal courts have exclusive subject matter jurisdiction, any federal
courts of the United States of America sitting in the State of Delaware) in connection with any matter based upon or arising out of this Agreement or the transactions contemplated hereby, agrees that process may be served upon them in any manner
authorized by the laws of the State of Delaware for such persons and waives and covenants not to assert or plead any objection which they might otherwise have to such jurisdiction, venue and manner of service of process. Each Party hereto hereby
agrees not to commence any legal proceedings relating to or arising out of this Agreement or the transactions contemplated hereby in any jurisdiction or courts other than as provided herein. Each of the Parties hereto (i) certifies that no
representative, agent or attorney of any other Party has represented, expressly or otherwise, that such other Party would not, in the event of litigation, seek to enforce that foregoing waiver and (ii) acknowledges that it and the other Party
hereto have been induced to enter into this Agreement and the transactions contemplated hereby, as applicable, by, among other things, the mutual waivers and certifications in this Section. EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES ANY
AND ALL RIGHT TO TRIAL BY JURY IN ANY ACTION BASED UPON, ARISING OUT OF OR RELATED TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY. 

Section 4.10 Assignment. No Party may assign either this Agreement or any of its rights, interests, or obligations hereunder without the prior
written approval of the other Party. Subject to the first sentence of this Section, this Agreement shall be binding upon and shall inure to the benefit of the Parties hereto and their respective successors and permitted assigns. 

Section 4.11 Amendment. This Agreement may be amended by the parties hereto at any time only by execution of an instrument in writing signed on
behalf of each of the Parties. 
 [Signature Page Follows] 

 IN WITNESS WHEREOF, the Parties have caused this Agreement to be duly executed as of the
date first written above. 
  

			
	NORTHERN STAR ACQUISITION CORP.
		
	By:	 	 
		 	Name:
		 	Title:
	
	 BARKBOX INC.

		
	 By:
	 	 
		 	 Name:

		 	 Title:

 [Signature Page to Support Agreement] 

 IN WITNESS WHEREOF, the Parties have caused this Agreement to be duly executed as of the date first written
above. 
 STOCKHOLDER 
 If individual:

  

					
	 	  		  	
	Signature of Stockholder	  		  	
			
	 	  		  	
	Printed Name of Stockholder	  		  	
			
	 	  		  	  

	Signature of Stockholder’s Spouse (if applicable)	  		  	Printed Name of Stockholder’s Spouse (if applicable)

 If entity: 
  

			
	 	 	
	Printed Name of Entity	 	

	
	
	 By: _______________________________________________

	 Name: _____________________________________________

	 Title: ______________________________________________

 Address of Stockholder: _______________________________________________________________________ 

 

							
	 Series
	  	 Shares Owned

Beneficially
	  	 Shares Held of

Record
	  	 Shares Over Which the
Stockholder has

Full Voting Power

	Common	  		  		  	
	Series Seed	  		  		  	
	Series A	  		  		  	
	Series B	  		  		  	
	Series C	  		  		  	
	Series C-1	  		  		  	

 Note: Please indicate class, series and subseries of Shares, as applicable. 

[Signature Page to Support Agreement] 

 ANNEX A 

MERGER AGREEMENT 

[attached] 

  
 A-1 

 ANNEX B 

FORM OF JOINDER 
 This Joinder Agreement
(this “Joinder Agreement”) is made as of the date written below by the undersigned (the “Joining Party”) in accordance with the Support Agreement dated as of December [•], 2020 (as amended, supplemented or
otherwise modified from time to time, the “Support Agreement”) by and between Parent and the Company Stockholder that is party thereto. Capitalized terms used herein and not otherwise defined shall have the meaning ascribed to
them in the Support Agreement. 
 The Joining Party hereby acknowledges, agrees and confirms that, by its execution of this Joinder Agreement, the Joining
Party shall be deemed to be a party to, and a “Stockholder” under, the Support Agreement as of the date hereof and shall have all of the rights and obligations of a Stockholder as if it had executed the Support Agreement. The Joining Party
hereby ratifies, as of the date hereof, and agrees to be bound by, all of the terms, provisions and conditions contained in the Support Agreement. 
 IN
WITNESS WHEREOF, the undersigned has duly executed this Joinder Agreement as of the date written below. 
  

							
	Date: [•][•], 20[•]	 		 	
				
		 		 	By:	 	 
		 		 		 	Name:
		 		 		 	Title:
			
		 		 	Address for Notices:
			
		 		 	With copies to:

  
 B-1 

 ANNEX C 

FORM OF LOCK-UP AGREEMENT 

[attached] 

  
 C-1EX-10.3

 Exhibit 10.3 

Execution Version 
 FORM
OF SPONSOR SUPPORT AGREEMENT 
 This SPONSOR SUPPORT AGREEMENT (this “Agreement”), dated as of December [•], 2020,
is entered into by and among Northern Star Sponsor LLC, a Delaware limited liability company (“Sponsor Holdco”), the Persons set forth on Annex A hereto (together with the Sponsor Holdco, each a “Sponsor” and
together, the “Sponsors”), Northern Star Acquisition Corp., a Delaware corporation (“Parent”) and Barkbox Inc., a Delaware corporation (the “Company”). Each of Sponsor, Parent and the Company are
individually referred to herein as a “Party” and collectively as the “Parties”. Capitalized terms used herein and not otherwise defined shall have the meaning ascribed to them in the Agreement and Plan of
Reorganization, dated as of December [•], 2020 (as amended, supplemented or otherwise modified from time to time, the “Merger Agreement”), by and Parent, NSAC Merger Sub Corp., a Delaware corporation (“Merger
Sub”), and the Company. 
 RECITALS 

WHEREAS, as of the date of this Agreement, the Sponsors are the record holder, beneficial (as such term is defined in Rule 13d-3 under the Exchange Act, which meaning shall apply for all purposes of this Agreement whenever the term “beneficial” or “beneficially” is used) owner, and has full voting power over
6,358,750 shares of Founder Common Stock, zero shares of Parent Common Stock (together with the Founder Common Stock, the “Subject Shares”) and 4,558,000 Parent Warrants in the aggregate as set forth on Annex A attached
hereto; 
 WHEREAS, the Company, Parent and Merger Sub have entered into the Merger Agreement in the form attached hereto as Annex B,
which provides for the merger of Merger Sub with and into the Company (the “Merger”), with the Company surviving the Merger, pursuant to the provisions of the DGCL; 

WHEREAS, as an inducement to the Company and Parent to enter into the Merger Agreement and to consummate the transactions contemplated
therein, the parties hereto desire to agree to certain matters as set forth herein; 
 WHEREAS, Parent and each of the Sponsors desire to
make certain representations, warranties, covenants and agreements in connection with this Agreement; 
 NOW, THEREFORE, in consideration of
the foregoing premises and the representations, warranties, covenants and agreements set forth in this Agreement, the Parties agree as follows: 

 ARTICLE 1 

VOTING AND TRANSFER OF SHARES 

Section 1.01 Voting. 
 (a) At any meeting of the
shareholders of Parent, however called, or at any adjournment thereof, or in any other circumstance in which the vote, consent or other approval of the stockholders of Parent is sought, each Sponsor shall (i) appear at each such meeting or
otherwise cause all of its Subject Shares to be counted as present thereat for purposes of calculating a quorum and (ii) vote (or cause to be voted), or execute and deliver a written consent (or cause a written consent to be executed and
delivered) covering, all of its Subject Shares: 
  

	 	(i)	 in favor of all Stockholder Matters, including any proposal for Parent Stockholders to adopt the Merger
Agreement and approving any other matters necessary for consummation of the transactions contemplated by the Merger Agreement, including the Merger; 

  

	 	(ii)	 in favor of any proposal to adjourn a Special Meeting at which there is a proposal for Parent Stockholders to
adopt the Merger Agreement to a later date if there are not sufficient votes to adopt the Merger Agreement or if there are not sufficient shares of Parent common stock present in person or represented by proxy at such Special Meeting to constitute a
quorum; 

  

	 	(iii)	 against any proposal, offer or submission with respect to a competing transaction described in Section 4.3
(No Solicitation) of the Merger Agreement (a “Competing Transaction”) or the adoption of any agreement to enter into a Competing Transaction; 

 

	 	(iv)	 against any proposal for any amendment or modification of Parent’s Charter Documents that would change the
voting rights of any Subject Shares or the number of votes required to approval any proposal, including the vote required to adopt the Merger Agreement; 

  

	 	(v)	 against any change in the business, management or Board of Directors of Parent (other than in connection with
the Stockholder Matters); and 

  

	 	(vi)	 against any action, transaction, agreement or proposal that would, or would reasonably be expected to
(A) result in a breach of any representation, warranty, covenant or any other obligation or agreement of Parent or Merger Sub under the Merger Agreement or any agreement ancillary thereto or Parent or the Sponsors under this Agreement or any of
the conditions to the consummation of the Merger under the Merger Agreement not being fulfilled on a timely basis, (B) prevent, delay or impair consummation of the Merger or dilute, in any material respect, the benefit of the Merger to the
Company and its stockholders, or (C) facilitate any proposal, offer or submission with respect to a Competing Transaction or any agreement to enter into a Competing Transaction. 

(b) Each Sponsor hereby agrees that it shall not commit or agree to take any action inconsistent with the foregoing. Each Sponsor shall comply with, and fully
perform all of its obligations, covenants and agreements set forth in, that certain Letter Agreement, dated as of November 13, 2020, by and among the Sponsors and Parent (the “Voting Letter Agreement”). 

 (c) Any vote required to be cast or consent or dissent in writing required to be expressed pursuant to this
Section 1.01 shall be cast or expressed in accordance with the applicable procedures relating thereto so as to ensure that it is duly counted for purposes of determining that a quorum is present (if applicable) and for
purposes of recording the results of that vote. For the avoidance of doubt, nothing contained herein requires any Sponsor (or entitles any proxy of any Sponsor) to convert, exercise or exchange any options, warrants or convertible securities in
order to obtain any underlying shares of Parent Common Stock. 
 (d) Each Sponsor agrees not to enter into any commitment, agreement, understanding or
similar arrangement with any Person to vote or give voting instructions or express consent or dissent in writing in any manner inconsistent with the terms of this Section 1.01. 

Section 1.02 No Transfers. During the period beginning on the date of this Agreement and ending on the Expiration Date (the “Applicable
Period”), each Sponsor agrees not to, directly or indirectly, in one or more transactions, whether by merger, consolidation, division, operation of law, or otherwise (including by succession or otherwise by operation of applicable Legal
Requirements): (a) sell, convey, assign, transfer, exchange, pledge, hypothecate or otherwise encumber or dispose of any Subject Shares (or any right, title or interest therein) or any rights to acquire any securities or equity interests of the
Company; (b) deposit any Subject Shares or any rights to acquire any securities or equity interests of the Company into a voting trust or enter into a voting agreement or any other arrangement with respect to any Subject Shares or any rights to
acquire any securities or equity interests of the Company or grant or purport to grant any proxy or power of attorney with respect thereto that is inconsistent with this Support Agreement; (c) enter into any contract, option, call or other
arrangement or undertaking, whether or not in writing, with respect to the direct or indirect sale, conveyance, assignment, transfer, exchange, pledge, hypothecation or other encumbrance or disposition, or limitation on the voting rights, of any
Subject Shares (or any right, title or interest therein) or any rights to acquire any securities or equity interests of the Company; (d) otherwise grant, permit or suffer the creation of any Encumbrances on any Subject Shares, other than
Permitted Encumbrances; or (e) approve or commit or agree to take any of the foregoing actions (any action described in the immediately preceding sentence, a “Transfer”); provided, however, that the foregoing
shall not prohibit Transfers (i) between the Sponsor and any Affiliate of the Sponsor, (ii) if the Sponsor is an individual, to a trust for the benefit of the Sponsor or to any member of a Sponsor’s immediate family or a trust for the
benefit of such immediate family member or (iii) if the Sponsor is an individual, by will, other testamentary document or under the laws of intestacy upon the death of Sponsor, in each case, so long as, prior to and as a condition to the
effectiveness of any such Transfer, such Affiliate or transferee executes and delivers to the Company a joinder to this Agreement in the form attached hereto as Annex C. Any Transfer or action in violation of this
Section 1.02 shall be void ab initio. If any involuntary Transfer of any of Subject Shares occurs, the transferee (and all transferees and subsequent transferees of such transferee) shall take and hold such Subject
Shares subject to all of the restrictions, liabilities and rights under this Agreement, which shall continue in full force and effect during the Applicable Period. 

Section 1.03 Stop Transfer. Each Sponsor agrees that such Sponsor shall not request that Parent register any transfer of any certificate or
book-entry share or other uncertificated interest representing any Subject Shares made in violation of the restrictions set forth in Section 1.02 during the Applicable Period and hereby authorizes and instructs the Parent
to instruct its transfer agent to enter a stop transfer order with respect to all of the Subject Shares, subject to the provisions hereof; provided, that any such stop transfer order will immediately be withdrawn and terminated by the Parent
following the termination of this Agreement. 

 Section 1.04 No Redemption. Each Sponsor irrevocably and unconditionally agrees that, during the
Applicable Period, such Sponsor shall not elect to redeem any Subject Shares beneficially owned or owned of record by such Sponsor, or submit any of its Subject Shares for redemption, in connection with the transactions contemplated by the Merger
Agreement or otherwise. 
 Section 1.05 Waiver of Anti-dilution Protection. Each Sponsor hereby waives, to the fullest extent permitted by law,
the ability to adjust the Initial Conversion Ratio (as defined in the certificate of incorporation of the Parent) pursuant to Article FOURTH, Section (B)(2)(ii) of the certificate of incorporation of the Parent in connection with the issuance of
additional Parent Class A Common Stock in the transactions contemplated by the Merger Agreement. This waiver shall be applicable only in connection with the transactions contemplated by the Merger Agreement and this Support Agreement (and any
Parent Class A Common Stock issued in connection with the transactions contemplated by the Merger Agreement) and shall be void and of no force and effect if this Agreement is terminated other than pursuant to Section 4.01(a) hereto. 

Section 1.06 Public Announcements; Filings; Disclosures. 

(a) Each Sponsor (and each such Sponsor’s controlled Affiliates, other than Parent) agrees that it shall not issue any press release or make any other
public announcement or public statement (a “Public Communication”) with respect to this Agreement, the Merger Agreement, or the transactions contemplated hereby or thereby, without the prior written consent of the Company (such
consent not to be unreasonably withheld, conditioned or delayed), except as required by applicable Legal Requirements, in which case such Sponsor shall use its reasonable best efforts to provide the Company and the Company’s legal counsel with
a reasonable opportunity to review and comment on such Public Communication in advance of its issuance and shall give reasonable and good faith consideration to any such comments. 

(b) Each Sponsor hereby consents to and authorizes the Company and Parent to publish and disclose in any Public Communication or in any disclosure required by
the SEC and in the Proxy Statement/Prospectus prepared by Parent and filed with the SEC relating to the Special Meeting such Sponsor’s identity and ownership of Subject Shares and each such Sponsor’s obligations under this Agreement
(the “Sponsor Information”), consents to the filing of this Agreement to the extent required by applicable Legal Requirements to be filed with the SEC or any regulatory authority relating to the Merger, and agrees to cooperate
with Parent in connection with such filings, including providing Sponsor Information reasonably requested by Parent. 
 Section 1.06 Non-Solicitation. Each Sponsor acknowledges that such Sponsor has read Section 4.3 of the Merger Agreement. In addition, each Sponsor agrees that the restrictions imposed on Parent pursuant to
Section 4.3 of the Merger Agreement shall be binding upon the Sponsor mutatis mutandis and further agrees not to take (and agrees to cause its Affiliates and its and their Representatives not to take), directly or indirectly, any action
that would violate Section 4.3 of the Merger Agreement if such action were taken by Parent. 

 Section 1.07 No Agreement as Director or Officer. Each Sponsor is entering into this Agreement
solely in such Sponsor’s capacity as record or beneficial owner of Subject Shares and nothing herein is intended to or shall limit or affect any actions taken by such Sponsor or any employee, officer, director (or person performing similar
functions), partner or other Affiliate (including, for this purpose, any appointee or representative of the Sponsor to the board of directors of the Parent) of the Sponsor, solely in his or her capacity as a director or officer of the Parent (or a
Subsidiary of the Parent) or other fiduciary capacity for the Parent Stockholders. 
 Section 1.08 Acquisition of Additional Shares. In the
event that, during the period commencing on the date hereof and ending at the Expiration Date, (a) any Subject Shares are issued to Sponsor after the date of this Agreement pursuant to any stock dividend, stock split, recapitalization,
reclassification, combination or exchange of Subject Shares or otherwise, (b) Sponsor purchases or otherwise acquires beneficial ownership of any Subject Shares or (c) Sponsor acquires the right to vote or share in the voting of any
Subject Shares (collectively the “New Securities”), then such New Securities acquired or purchased by such Sponsor shall be subject to the terms of this Agreement to the same extent as if they constituted the Subject Shares owned by
such Sponsor as of the date hereof. 
 Section 1.09 No Litigation. Each Sponsor hereby agrees not to commence, maintain or participate in, or
facilitate, assist or encourage, and agrees to take all actions necessary to opt out of any class in any class action with respect to, any claim, derivative or otherwise, suit, proceeding or cause of action, in law or in equity, in any court or
before any Governmental Entity (a) challenging the validity of, or seeking to enjoin or delay the operation of, any provision of this Agreement or the Merger Agreement or the transactions contemplated hereby or thereby (including any claim
seeking to enjoin or delay the consummation of the Merger), (b) alleging a breach of any fiduciary duty of any Person or alleging that any Person aided or abetted any breach of any fiduciary duty of any Person in connection with this Agreement or
the Merger Agreement or the transactions contemplated thereby or thereby, or (c) otherwise relating to the Merger Agreement, this Agreement or the Merger or other transactions contemplated hereby or thereby. 

Section 1.10 Further Assurances. Each Sponsor shall execute and deliver, or cause to be executed and delivered, such further certificates,
instruments and other documents and to take such further actions as the Company may reasonably request for the purpose of effectively carrying out the transactions contemplated by this Agreement and the Merger Agreement. 

ARTICLE 2 

REPRESENTATIONS AND WARRANTIES OF THE SPONSORS 

Each Sponsor hereby severally and not jointly represents and warrants to Parent and the Company as follows: 

Section 2.01 Organization; Authorization. In the event the Sponsor is an individual, the Sponsor has full power, right and legal capacity to
execute and deliver this Agreement, and to perform his or her obligations hereunder. In the event the Sponsor is a legal entity, (a) the Sponsor is a legal entity duly organized, validly existing and in good standing under the applicable Legal
Requirements of the Sponsor’s jurisdiction of its organization, (b) the Sponsor has all requisite corporate or similar power and authority and has taken all corporate or similar action necessary in order to execute and deliver this
Agreement, to perform the Sponsor’s obligations under this Agreement and consummate the transactions contemplated by this Agreement, and (c) no 

 
approval by any holder of the Sponsor’s equity interests is necessary to approve this Agreement. This Agreement has been duly authorized, executed and delivered by the Sponsor and, in the
event the Sponsor is an individual and is married and any of the Sponsor’s Subject Shares constitute community property or spousal approval is otherwise required in order for this Agreement to be a valid and binding obligation of the Sponsor,
this Agreement has been duly authorized, executed and delivered by or on behalf of the Sponsor’s spouse, and this Agreement constitutes a valid and binding agreement of the Sponsor enforceable against the Sponsor in accordance with its terms,
except as may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting the enforcement of creditors’ rights generally and by general principles of equity. 

Section 2.02 Governmental Filings; No Violations; Certain Contracts. The execution, delivery and performance by the Sponsor of this Agreement and
the consummation by the Sponsor of the transactions contemplated hereby do not and will not (i) conflict with or violate any United States or non-United States statute, law, ordinance, regulation, rule,
code, executive order, injunction, judgment, decree or other order applicable to the Sponsor, (ii) require any consent, approval or authorization of, declaration, filing or registration with, or notice to, any person or entity,
(iii) result in the creation of any encumbrance on any Shares (other than under this Agreement) or (iv) conflict with or result in a breach of or constitute a default under any provision of the Sponsor’s governing documents or any
agreement (including any voting agreement) to which the Sponsor is a party. 
 Section 2.03 Litigation. As of the date of this Agreement, except
as would not, individually or in the aggregate, reasonably be expected to prevent, delay or impair the ability of the Sponsor perform its obligations under this Agreement or to consummate the transactions contemplated by this Agreement
(a) there is no action, suit, demand, complaint, litigation, review, audit, hearing, arbitration, proceeding, investigation or similar dispute by or before any Governmental Entity or otherwise pending or, to the knowledge of the Sponsor,
threatened against the Sponsor or any of its Affiliates and (b) neither the Sponsor nor any of its Affiliates is a party to or subject to the provisions of any judgment, order, writ, injunction, decree or award of any Governmental Entity. 

Section 2.04 Ownership of Parent Stock; Voting Power. The Sponsor’s signature page hereto correctly sets forth the number of the
Sponsor’s Subject Shares as of the date of this Agreement and, other than such Subject Shares, as of the date of this Agreement, there are no Parent securities (or any securities convertible, exercisable or exchangeable for, or rights to
purchase or acquire, any Parent securities) held of record or beneficially owned by the Sponsor or in respect of which the Sponsor has full voting power. The Sponsor has not made any Transfer of Subject Shares and the Sponsor is the record holder
and beneficial owner of all of its Subject Shares and has, and shall have throughout the Applicable Period, good and valid title to the Subject Shares, full voting power and power of disposition with respect to all such Subject Shares free and clear
of any liens, security interests, claims, pledges, proxies, options, right of first refusals, voting restrictions, limitations on dispositions, voting trusts or agreements, options or any other encumbrances or restrictions on title, transfer or
exercise of any rights of a stockholder in respect of such Subject Shares (collectively, “Encumbrances”), except for any such Encumbrance that (a) may be imposed pursuant to (i) this Agreement, the Merger Agreement and the
transactions contemplated hereby and thereby, (ii) any applicable restrictions on transfer under U.S. state or federal securities or “blue sky” applicable Legal Requirements or (iii) the Parent’s Charter

 
Documents or the terms of any customary custody or similar agreement applicable to Subject Shares held in brokerage accounts or (b) would not, individually or in the aggregate, reasonably be
expected to prevent, delay or impair the ability of the Sponsor perform its obligations under this Agreement or to consummate the transactions contemplated by this Agreement. No Person has any contractual or other right or obligation to purchase or
otherwise acquire any of the Sponsor’s Subject Shares other than pursuant to the Merger Agreement or as set forth in the Parent’s Charter Documents. 

Section 2.05 Reliance. Each Sponsor understands and acknowledges that the Company is relying upon the Sponsor’s execution, delivery and
performance of this Agreement and upon the representations and warranties and covenants of the Sponsors contained in this Agreement. 
 Section 2.06
Finder’s Fees. No agent, broker, investment banker, finder or other intermediary is or shall be entitled to any fee or commission or reimbursement of expenses from Parent, Merger Sub or the Company or any of their respective Affiliates
in respect of this Agreement based upon any arrangement or agreement made by or on behalf of the Sponsor. 
 Section 2.07 Proxy Statement. None
of the information supplied or to be supplied by the Sponsor for inclusion or incorporation by reference in the Proxy Statement/Prospectus and any amendment or supplement thereto will, at the date of mailing to the Parent Stockholders and at the
time of the Special Meeting contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they were
made, not misleading. 
 Section 2.08 Other Agreements. The Sponsor has not taken or permitted any action that would or would reasonably be
expected to (a) constitute or result in a breach hereof, (b) make any representation or warranty of the Sponsor set forth herein untrue or inaccurate or (c) otherwise restrict, limit or interfere with the performance of this
Agreement, the Merger Agreement or the transactions contemplated by this Agreement or the Merger Agreement. 
 Section 2.09 Sponsor Has Adequate
Information. The Sponsor acknowledges that the Sponsor is a sophisticated investor with respect to the Sponsor’s Subject Shares and has adequate information concerning the business and financial condition of the Company and Parent to make
an informed decision regarding the transactions contemplated by this Agreement and has, independently and without reliance upon Parent, the Company or any Affiliate of Parent and the Company, and based on such information as the Sponsor has deemed
appropriate, made the Sponsor’s own analysis and decision to enter into this Agreement. The Sponsor acknowledges that the Sponsor has received and reviewed this Agreement and the Merger Agreement and has had the opportunity to seek independent
legal advice prior to executing this Agreement. 
 Section 2.10 No Other Representations or Warranties. Except for the representations and
warranties made by the Sponsor in this Article 2, neither the Sponsor nor any other Person makes any express or implied representation or warranty to the Company or Parent in connection with this Agreement or the
transactions contemplated by this Agreement, and the Sponsor expressly disclaims any such other representations or warranties. 

 ARTICLE 3 

REPRESENTATIONS AND WARRANTIES OF PARENT 

Each of Parent and the Company represent and warrant to the Sponsors as follows: 

Section 3.01 Organization. Such Party is a legal entity duly organized, validly existing and in good standing under the laws of the State of
Delaware. 
 Section 3.02 Corporate Authority. Such Party has all requisite corporate power and authority and has taken all corporate or similar
action necessary in order to execute and deliver this Agreement, to perform its obligations under this Agreement and to consummate the transactions contemplated by this Agreement. This Agreement has been duly executed and delivered by such Party and
constitutes a valid and binding agreement of such Party enforceable against such Party in accordance with its terms, except as may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws affecting the enforcement of
creditors’ rights generally and by general principles of equity. 
 Section 3.03 No Other Representations or Warranties. Except for the
representations and warranties made by Parent in this Article 3, neither such Party nor any other Person makes any express or implied representation or warranty to the Sponsor in connection with this Agreement or the
transactions contemplated by this Agreement, and the Sponsor expressly disclaims reliance upon, and the Sponsor acknowledges and agrees that such Party expressly disclaims, any such other representations or warranties. 

ARTICLE 4 
 GENERAL
PROVISIONS 
 Section 4.01 Termination. This Agreement, including the voting agreements contemplated by this Agreement and any proxy granted
hereunder if such proxy becomes effective, shall automatically be terminated at the earliest to occur of: (a) the Effective Time; (b) the termination of the Merger Agreement pursuant to Article VII thereof; or (c) the effective date
of a written agreement duly executed and delivered by Parent, the Company and each of the Sponsors terminating this Agreement (the date and time at which the earlier of clause (a), (b), and (c) occurs being, the “Expiration
Date”); provided, however, that in the case of any termination pursuant to clause (a), Section 1.05 (Waiver of Anti-dilution Protection), Section 1.06 (Public
Announcements; Filings; Disclosure), Section 1.09 (No Litigation) and Section 1.10 (Further Assurances) and this Article 4 shall survive such termination. Nothing set forth
in this Section 4.01 or elsewhere in this Agreement shall relieve any Party of any liability or damages to any other Party for any intentional and willful breach of this Agreement by such Party prior to such termination or
fraud in connection with, arising out of or otherwise related to the representations and warranties set forth in this Agreement or any instrument or other document delivered pursuant to this Agreement. 

Section 4.02 Notices. All notices and other communications between the Parties shall be in writing and shall be deemed to have been duly given
(i) when delivered in person, (ii) when delivered after posting in the United States mail having been sent registered or certified mail return receipt requested, postage prepaid, (iii) when delivered by FedEx or other nationally

 
recognized overnight delivery service or (iv) when e-mailed during normal business hours (and otherwise as of the immediately following
Business Day), addressed as follows: 
 If to Parent or any Sponsor: 

Northern Star Acquisition Corp. 

c/o Graubard Miller 
 The Chrysler
Building 
 405 Lexington Avenue, 11th Floor 

New York, New York 10174 

Attention: Jonathan J. Ledecky 
 E-mail: jledecky@hockeyny.com 
 with a copy to (which shall not constitute notice): 

Graubard Miller 
 The Chrysler
Building 
 405 Lexington Avenue, 11th Floor 

New York, New York 10174 

Attention: David Alan Miller / Jeffrey M. Gallant 

E-mail: dmiller@graubard.com / jgallant@graubard.com 

If to the Company: 
 Skadden,
Arps, Slate, Meagher & Flom LLP 
 525 University Avenue, Suite 1400 

Palo Alto, California 94301 

Attention: Michael Mies 
 E-mail: michael.mies@skadden.com 
 and: 

Gunderson Dettmer 
 1250 Broadway,
23rd Floor 
 New York, New York 10001 

Attention: Brooks Stough / Melissa B. Marks / John Olson 

E-mail: bstough@gunder.com / mmarks@gunder.com / jolson@gunder.com 

Section 4.03 Expenses. Except as otherwise provided herein or in the Merger Agreement, all costs and expenses incurred in connection with this
Agreement and the transactions contemplated hereby shall be paid by the Party incurring such costs and expenses, whether or not the Merger is consummated. 

Section 4.04 Counterparts; Electronic Delivery. This Agreement and each other document executed in connection with the transactions contemplated
hereby, and the consummation thereof, may be executed in one or more counterparts, all of which shall be considered one and the same document and shall become effective when one or more counterparts have been signed by each of the Parties and
delivered to the other Party, it being understood that all parties need not sign the same counterpart. Delivery by electronic transmission to counsel for the other Party of a counterpart executed by a Party shall be deemed to meet the requirements
of the previous sentence. 

 Section 4.05 Entire Agreement; Third Party Beneficiaries. This Agreement and the Voting Letter
Agreement (except as superseded hereby) and the documents and instruments and other agreements between the Parties as contemplated by or referred to herein, including the annexes hereto (a) constitute the entire agreement between the Parties
with respect to the subject matter hereof and supersede all prior agreements and understandings, both written and oral, between the Parties and any of their respective Affiliates with respect to the transactions contemplated hereby; and (b) are
not intended to confer upon any other person any rights or remedies hereunder (except as specifically provided in this Agreement). No representations, warranties, covenants, understandings, agreements, oral or otherwise, relating to the transactions
contemplated by this Agreement exist between the parties except as expressly set forth or referenced in this Agreement and the Merger Agreement. 

Section 4.06 Severability. In the event that any provision of this Agreement, or the application thereof, becomes or is declared by a court of
competent jurisdiction to be illegal, void or unenforceable, the remainder of this Agreement will continue in full force and effect and the application of such provision to other persons or circumstances will be interpreted so as reasonably to
effect the intent of the parties hereto. The Parties further agree to modify this Agreement to replace such void or unenforceable provision of this Agreement with a valid and enforceable provision that will achieve, to the extent possible, the
economic, business and other purposes of such void or unenforceable provision. 
 Section 4.07 Other Remedies; Specific Performance. Except as
otherwise provided herein, any and all remedies herein expressly conferred upon a Party will be deemed cumulative with and not exclusive of any other remedy conferred hereby, or by law or equity upon such Party, and the exercise by a Party of any
one remedy will not preclude the exercise of any other remedy. The Parties hereto agree that irreparable damage would occur in the event that any of the provisions of this Agreement were not performed in accordance with their specific terms or were
otherwise breached. It is accordingly agreed that the Parties shall be entitled to an injunction or injunctions to prevent breaches of this Agreement and to enforce specifically the terms and provisions hereof in any court of the United States or
any state having jurisdiction, this being in addition to any other remedy to which they are entitled at law or in equity. Each Party agrees that it will not oppose the granting of specific performance and other equitable relief on the basis that the
other Party has an adequate remedy at law or that an award of specific performance is not an appropriate remedy for any reason at law or equity. The Parties acknowledge and agree that any Party seeking an injunction to prevent breaches of this
Agreement and to enforce specifically the terms and provisions of this Agreement in accordance with this Section shall not be required to provide any bond or other security in connection with any such injunction. 

Section 4.08 Governing Law. This Agreement shall be governed by and construed in accordance with the internal law of the State of Delaware
regardless of the law that might otherwise govern under applicable principles of conflicts of law thereof. 

 Section 4.09 Consent to Jurisdiction; WAIVER OF TRIAL BY JURY. Each of the Parties hereto
irrevocably consents to the exclusive jurisdiction and venue of the Delaware Chancery Court (or, if the Delaware Chancery Court shall be unavailable, any other court in the State of Delaware or, in the case of claims to which the federal courts have
exclusive subject matter jurisdiction, any federal courts of the United States of America sitting in the State of Delaware) in connection with any matter based upon or arising out of this Agreement or the transactions contemplated hereby, agrees
that process may be served upon them in any manner authorized by the laws of the State of Delaware for such persons and waives and covenants not to assert or plead any objection which they might otherwise have to such jurisdiction, venue and manner
of service of process. Each Party hereto hereby agrees not to commence any legal proceedings relating to or arising out of this Agreement or the transactions contemplated hereby in any jurisdiction or courts other than as provided herein. Each of
the Parties hereto (i) certifies that no representative, agent or attorney of any other Party has represented, expressly or otherwise, that such other Party would not, in the event of litigation, seek to enforce that foregoing waiver and
(ii) acknowledges that it and the other Party hereto have been induced to enter into this Agreement and the transactions contemplated hereby, as applicable, by, among other things, the mutual waivers and certifications in this Section. EACH
OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY ACTION BASED UPON, ARISING OUT OF OR RELATED TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY. 

Section 4.10 Assignment. No Party may assign either this Agreement or any of its rights, interests, or obligations hereunder without the prior
written approval of the other Party. Subject to the first sentence of this Section, this Agreement shall be binding upon and shall inure to the benefit of the Parties hereto and their respective successors and permitted assigns. 

Section 4.11 Amendment. This Agreement may be amended by the parties hereto at any time only by execution of an instrument in writing signed on
behalf of each of the Parties. 
 [Signature Page Follows] 

 IN WITNESS WHEREOF, the Parties have caused this Agreement to be duly executed as of the
date first written above. 
  

			
	BARKBOX INC.
		
	By:	 	 
		 	Name:
		 	Title:
	
	NORTHERN STAR ACQUISITION CORP.
		
	By:	 	 
		 	Name:
		 	Title:

 [Signature Page to Sponsor Support Agreement] 

 IN WITNESS WHEREOF, the Parties have caused this Agreement to be duly executed as of the
date first written above. 
 SPONSORS: 
  

			
	NORTHERN STAR SPONSOR LLC
		
	By:	 	 
		 	Name:
		 	Title:

  

	
	   

	Jonathan J. Ledecky
	
	   

	 Joanna Coles

	
	   

	 Jim Brady

	
	   

	 Deb Spar

	
	   

	 Justine Cheng

	
	   

	 John Mildenhall

 [Signature Page to Sponsor Support Agreement] 

 ANNEX A 

Sponsor Parent Common Shares and Parent Warrants 
  

					
	 Name
	 	 Founder Common Stock
	 	 Parent Warrants

	 Northern Star Sponsor LLC
	 	 6,108,750
	 	 4,558,000

	 Jim Brady
	 	 100,000
	 	
	 Deb Spar
	 	 50,000
	 	
	 Justine Cheng
	 	 50,000
	 	
	 John Mildenhall
	 	 50,000
	 	

 ANNEX B 

MERGER AGREEMENT 

[attached] 

 ANNEX C 

FORM OF JOINDER 
 This Joinder Agreement
(this “Joinder Agreement”) is made as of the date written below by the undersigned (the “Joining Party”) in accordance with the Sponsor Support Agreement dated as of December [•], 2020 (as amended, supplemented
or otherwise modified from time to time, the “Support Agreement”) by and between Company, Parent and the Sponsors that is party thereto. Capitalized terms used herein and not otherwise defined shall have the meaning ascribed to
them in the Support Agreement. 
 The Joining Party hereby acknowledges, agrees and confirms that, by its execution of this Joinder Agreement, the Joining
Party shall be deemed to be a party to, and a “Sponsor” under, the Sponsor Support Agreement as of the date hereof and shall have all of the rights and obligations of a Sponsor as if it had executed the Sponsor Support Agreement. The
Joining Party hereby ratifies, as of the date hereof, and agrees to be bound by, all of the terms, provisions and conditions contained in the Sponsor Support Agreement. 

IN WITNESS WHEREOF, the undersigned has duly executed this Joinder Agreement as of the date written below. 

 

							
	Date: [•][•], 20[•]	 		 	
				
		 		 	By:	 	 
		 		 		 	Name:
		 		 		 	Title:
			
		 		 	Address for Notices:
			
		 		 	With copies to:

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