Document:

EX-4.5

 Exhibit 4.5 

Restricted Unit Award Agreement 

This Restricted Unit Award Agreement (this “Agreement”) is made and entered into as of the Date of Grant set forth in
the Restricted Unit Award Grant Notice (“Notice of Grant”) by and between OMP GP LLC, a Delaware limited liability company (the “General Partner”), and [•] (“you” or
“Service Provider”). Capitalized terms used but not specifically defined herein shall have the meanings specified in the Notice of Grant or the Oasis Midstream Partners LP 2017 Long Term Incentive Plan (the
“Plan”), as applicable. 
 WHEREAS, the Oasis Midstream Partners LP, a Delaware limited partnership (the
“Partnership”), acting through the Board of Directors of the General Partner (the “Board”), has adopted the Plan under which the General Partner is authorized to grant Restricted Units to certain
Service Providers of the Partnership; 
 WHEREAS, the Partnership, in order to induce you to enter into and to continue to dedicate
service to the Partnership and to materially contribute to the success of the Partnership, agrees to grant you the Restricted Unit Award; 

WHEREAS, a copy of the Plan and the Notice of Grant have both been furnished to you and shall be deemed a part of this Agreement as if
fully set forth herein; and 
 WHEREAS, you desire to accept the Restricted Unit Award made pursuant to this Agreement. 

NOW, THEREFORE, in consideration of and mutual covenants set forth herein and for other valuable consideration hereinafter set
forth, the parties agree as follows: 
 1. The Grant. Subject to the conditions set forth below, the Partnership hereby grants you
effective as of the Date of Grant set forth in the Notice of Grant, as a matter of separate inducement but not in lieu of any salary or other compensation for your services to the Partnership, an Award consisting of the aggregate number of
Restricted Units set forth in the Notice of Grant in accordance with the terms and conditions set forth in this Agreement, the Notice of Grant, and the Plan. 

2. Rights of Service Provider. The Partnership shall evidence the Restricted Unit Award in the manner that it deems appropriate. The
Partnership may issue in your name a certificate or certificates representing the Restricted Units granted pursuant to this Agreement and retain that certificate or those certificates until the restrictions on such Restricted Units granted pursuant
to this Agreement expire as contemplated in Section 4 of this Agreement or are forfeited as contemplated in Sections 3 and 5. If the Partnership certificates the Restricted Units granted pursuant to this Agreement, you shall execute one or more
unit powers in blank for those certificates and deliver those unit powers to the Partnership. The Partnership shall hold the Restricted Units granted pursuant to this Agreement and the related unit powers pursuant to the terms of this Agreement, if
applicable, until such time as (a) a certificate or certificates for such Restricted Units are delivered to you, (b) such Restricted Units are otherwise transferred to you free of restrictions, or (c) such Restricted Units are
canceled and forfeited pursuant to this Agreement. Notwithstanding the foregoing, the Service Provider shall have all the voting rights, if any, with respect to the Restricted Units granted pursuant to this Agreement and the right to 

 

 receive any distributions made by the Partnership with regard to a Restricted Unit granted pursuant to this
Agreement (a “Unit Distribution Right” or “UDR”). Any Unit Distribution Rights payments will be made to the Service Provider in the same form as paid to unitholders on or promptly following the date
that the Partnership pays such distribution to unitholders (however, in no event shall the payment be made later than 30 days following the date on which the Partnership pays such distribution to unitholders generally). Notwithstanding the date of
payment, the Service Provider will vest in such Unit Distribution Right as of the record date for such distribution. No interest will accrue on any such right between the issuance of the distribution to unitholders generally and the settlement of
the Unit Distribution Right. 
 3. Restrictions; Forfeiture. Except as provided in the Plan, the Restricted Unit award is restricted
in that it may not be sold, transferred or otherwise alienated or hypothecated until these restrictions are removed or expire as contemplated in Section 4 of this Agreement and as described in the Notice of Grant. The Restricted Unit Award is
also restricted in the sense that it may be forfeited to the Partnership (the “Forfeiture Restrictions”) as described in Section 5 of this Agreement. You hereby agree that if all or a portion of the Restricted Unit Award
is forfeited as provided in Section 5, the Partnership shall have the right to deliver the forfeited Restricted Units to the Partnership’s transfer agent for cancellation. 

4. Expiration of Restrictions and Risk of Forfeiture. The Forfeiture Restrictions will expire and the Restricted Unit Award will become
transferable, except to the extent provided in Section 10 of this Agreement, and nonforfeitable as set forth in the Notice of Grant, provided that you remain a Service Provider to the Partnership or its Affiliates continuously from the Date of
Grant until the applicable dates set forth therein. 
 5. Terminations of Services. 

a. Termination Generally. Except as otherwise provided in the Notice of Grant and subject to Section 5(b) below, if
your service relationship with the Partnership or any of its Affiliates is terminated for any reason, then the portion of the Restricted Unit Award for which the Forfeiture Restrictions has not lapsed as of the date of termination shall become null
and void and such Restricted Units shall be cancelled. The portion of the Restricted Unit Award for which the Forfeiture Restrictions has lapsed as of the date of such termination shall not be cancelled. 

b. Effect of Employment Agreement or Plan. Notwithstanding any provision herein to the contrary, in the event of any
inconsistency between Section 5(a) and the terms of (i) any employment agreement entered into by and between you and the Partnership or its Affiliates (including Oasis Petroleum Inc.), (ii) the Oasis Petroleum Inc. Executive Change in
Control and Severance Benefit Plan, to the extent you are a participant, or (iii) any similar or successor plan, to the extent you are a participant, the terms of such applicable agreement or plan shall control to the extent such agreement or
plan addresses the Restricted Unit Award. 

  
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 6. Leave of Absence. With respect to the Restricted Unit Award, the Partnership may, in
its sole discretion, determine that if you are on a leave of absence for any reason, you will be considered to still be a Service Provider to the Partnership or its Affiliates; provided, that rights to the Restricted Unit Award during a leave of
absence will be limited to the extent to which those rights were earned or vested when the leave of absence began. 
 7. Delivery of
Units. Promptly following the expiration of the Forfeiture Restrictions, the Partnership shall cause to be issued and delivered to you or your designee a certificate or other evidence of the number of Units as to which the Forfeiture
Restrictions have lapsed, free of any restricted legend relating to the lapsed restrictions, upon receipt by the Partnership of any tax withholding as may be required pursuant to Section 8. The value of such Units shall not bear any interest
owing to the passage of time. 
 8. Payment of Taxes. The Partnership may require you to pay to the Partnership (or a Partnership
Affiliate if you are a Service Provider to a Partnership Affiliate) an amount the Partnership deems necessary to satisfy its (or its Affiliates’) current or future obligation to withhold federal, state or local income or other taxes that you
incur as a result of the Restricted Unit Award. With respect to any required tax withholding, you may (a) direct the Partnership to withhold from the Restricted Units to be issued to you under this Agreement the number of Units necessary to
satisfy the Partnership’s obligation to withhold taxes, the determination of which will be based on the Units’ Fair Market Value at the time such determination is made; (b) deliver to the Partnership Units sufficient to satisfy the
Partnership’s tax withholding obligations, based on the Units’ Fair Market Value at the time such determination is made; (c) deliver cash to the Partnership sufficient to satisfy its tax withholding obligations; or (d) satisfy
such tax withholding through any combination of (a), (b) and (c). If you desire to elect to use the Unit withholding option described in subparagraph (a) or (b), you must make the election at the time and in the manner the Partnership
prescribes. The Partnership, in its discretion, may deny your request to satisfy its tax withholding obligations using a method described under subparagraph (a) or (b). In the event the Partnership determines that the aggregate Fair Market
Value of the Restricted Units withheld as payment of any tax withholding obligation is insufficient to discharge that tax withholding obligation, then you must pay to the Partnership, in cash, the amount of that deficiency immediately upon the
Partnership’s request. 
 9. Compliance with Securities Laws; Partnership Policies. Notwithstanding any provision of this
Agreement to the contrary, the issuance of Units will be subject to compliance with all applicable requirements of federal, state, or foreign law with respect to such securities and with the requirements of any securities exchange or market system
upon which the Restricted Units may then be listed. No Units will be issued hereunder if such issuance would constitute a violation of any applicable federal, state, or foreign securities laws or other law or regulations or the requirements of any
securities exchange or market system upon which the Units may then be listed. In addition, Units will not be issued hereunder unless (a) a registration statement under the Securities Act of 1933, as amended (the “Act”),
is at the time of issuance in effect with respect to the Units issued or (b) in the opinion of legal counsel to the Partnership, the Units issued may be issued in accordance with the terms of an applicable exemption from the registration
requirements of the Act. The inability of the Partnership to obtain from the applicable securities exchange or any regulatory body having jurisdiction the authority, if any, deemed by the Partnership’s legal counsel to be necessary for the
issuance and sale of any Units subject to the Restricted Unit Award to be in compliance with securities exchange requirements and applicable law will relieve the Partnership of any liability in respect of the failure to issue such Units as to which
such requisite authority has not been obtained. As a condition to any 

  
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issuance hereunder, the Partnership may require you to satisfy any qualifications that may be necessary or appropriate to evidence compliance with any applicable law or regulation and to make any
representation or warranty with respect to such compliance as may be requested by the Partnership. From time to time, the Board and appropriate officers of the General Partner are authorized to take the actions necessary and appropriate to file
required documents with governmental authorities, securities exchanges, and other appropriate Persons to make Units available for issuance. You hereby agree not to sell any Units acquired pursuant to this Restricted Unit Award in violation of the
Partnership’s securities trading policy or in violation of any federal, state, or foreign law. 
 10.
Lock-Up Period. You hereby agree that, if so requested by the Partnership or any representative of the underwriters (the “Managing Underwriter”) in connection with any
registration of the offering of any securities of the Partnership under the Act, you will not sell or otherwise transfer any Units acquired hereunder or other securities of the Partnership during the 180-day
period (or such other period as may be requested in writing by the Managing Underwriter and agreed to in writing by the Partnership) (the “Market Standoff Period”) following the effective date of a registration statement of
the Partnership filed under the Act. Such restriction will apply only to the first registration statement of the Partnership to become effective under the Act that includes securities to be sold on behalf of the Partnership to the public in an
underwritten public offering under the Act. The Partnership may impose stop-transfer instructions with respect to securities subject to the foregoing restrictions until the end of such Market Standoff Period. 

11. Legends. The Partnership may at any time place legends referencing any restrictions imposed on the Units pursuant to Sections 3, 9
and 10 of this Agreement on all certificates representing Units issued with respect to this Restricted Unit Award. 
 12. Clawback.
Notwithstanding any provisions in the Plan or this Agreement to the contrary, any portion of the payments and benefits provided under this Agreement or the sale of the Units granted hereunder shall be subject to any clawback policy adopted by the
General Partner, including any such policy adopted to conform to the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 and rules promulgated thereunder by the Securities and Exchange Commission, and including any such clawback
policies adopted with retroactive effect. 
 13. Right of the Partnership and its Affiliates to Terminate Services. Nothing in this
Agreement confers upon you the right to continue as a Service Provider for the Partnership or its Affiliates, or interfere in any way with the rights of the Partnership or its Affiliates to terminate your service relationship at any time. 

14. Furnish Information. You agree to furnish to the Partnership all information requested by the Partnership to enable it to comply
with any reporting or other requirements imposed upon the Partnership by or under any applicable statute or regulation. 

  
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 15. No Liability for Good Faith Determinations. The Partnership and the members of the
Board shall not be liable for any act, omission or determination taken or made in good faith with respect to this Agreement or the Restricted Unit Award. 

16. Executions of Receipts and Releases. Any payment of cash or any issuance or transfer of Restricted Units or other property to you,
or to your legal representative, heir, legatee or distributee in accordance with the provisions hereof, shall, to the extent thereof, be in full satisfaction of all claims of such Persons hereunder. The Partnership may require you or your legal
representative, heir, legatee or distributee, as a condition precedent to such payment or issuance, to execute a release and receipt therefor in such form as it shall determine. 

17. No Guarantee of Interests. The Board and the Partnership do not guarantee the Restricted Units from loss or depreciation. 

18. Partnership Records. Records of the Partnership or its Affiliates regarding your period of service, termination of service and the
reason(s) therefor, leaves of absence, re-employment, and other matters shall be conclusive for all purposes hereunder, unless determined by the Partnership to be incorrect. 

19. Notice. All notices required or permitted under this Agreement must be in writing and personally delivered or sent by mail and shall
be deemed to be delivered on the date on which it is actually received by the Person to whom it is properly addressed or if earlier, the date it is sent via certified United States mail or reputable overnight delivery service (charges prepaid). 

20. Waiver of Notice. Any Person entitled to notice hereunder may waive such notice in writing. 

21. Successors. The Partnership may assign any of its rights under this Agreement without your consent. This Agreement shall be binding
upon and inure to the benefit of the successors and assigns of the General Partner and the Partnership. Subject to the restrictions on transfer set forth herein and in the Plan, this Agreement and the Forfeiture Restrictions shall be binding upon
and enforceable against you and your beneficiaries, executors, administrators and the person(s) to whom the Restricted Unit Award may be transferred by will or the laws of descent or distribution. 

22. Severability. If any provision of this Agreement is held to be illegal or invalid for any reason, the illegality or invalidity shall
not affect the remaining provisions hereof, but such provision shall be fully severable and this Agreement shall be construed and enforced as if the illegal or invalid provision had never been included herein. 

23. Partnership or Committee Action. Any action required of the Partnership or the General Partner shall be by resolution of the Board
or Committee or by a Person or entity authorized to act by resolution of the Board or Committee. 

  
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 24. Headings. The titles and headings of Sections are included for convenience of
reference only and are not to be considered in construction of the provisions hereof. 
 25. Governing Law. All questions arising with
respect to the provisions of this Agreement shall be determined by application of the laws of the State of Delaware, without giving any effect to any conflict of law provisions thereof, except to the extent Delaware state law is preempted by federal
law. The obligation of the Partnership to sell and deliver Units hereunder is subject to applicable laws and to the approval of any governmental authority required in connection with the authorization, issuance, sale, or delivery of such Units. 

26. Consent to Jurisdiction and Venue. You hereby consent and agree that state courts located in Harris County, Texas and the United
States District Court for the Southern District of Texas each shall have personal jurisdiction and proper venue with respect to any dispute between you and the Partnership arising in connection with the Restricted Unit Award or this Agreement. In
any dispute with the Partnership, you will not raise, and you hereby expressly waive, any objection or defense to any such jurisdiction as an inconvenient forum. 

27. Amendment. This Agreement may be amended by the Board or by the Committee at any time in a manner consistent with Section 7(a)
of the Plan. 
 28. Terms of Agreement. This Agreement is subject to all the terms, conditions, limitations and restrictions contained
in this Agreement, the Plan, and the Notice of Grant. Except as provided in Section 5(b) of this Agreement, together, the Agreement, Plan, and Notice of Grant constitute the entire agreement of the parties with regard to the subject matter
hereof, and contain all the covenants, promises, representations, warranties and agreements between the parties with respect to the Restricted Units granted hereby. Without limiting the scope of the preceding sentence, all prior understandings and
agreements, if any, among the parties hereto relating to the subject matter hereof are hereby null and void and of no further force and effect. 

  
 6EX-4.6

 Exhibit 4.6 

RESTRICTED UNIT AWARD GRANT NOTICE 

Pursuant to the terms and conditions of the Oasis Midstream Partners LP 2017 Long Term Incentive Plan, attached as Appendix A (the
“Plan”), and the associated Restricted Unit Award Agreement, attached as Appendix B (the “Agreement”), OMP GP LLC, a Delaware limited liability company, the general partner (“General
Partner”) of Oasis Midstream Partners LP, a Delaware limited partnership (the “Partnership”), hereby grants to the individual listed below (“you” or “Service
Provider”) the number of Restricted Units set forth below. Capitalized terms used but not defined herein shall have the meanings set forth in the Plan. This Restricted Unit Award (as defined below) is subject to the terms and conditions
set forth herein as a well as the terms and conditions set forth in the Agreement and the Plan, each of which is incorporated herein by reference. 
  

			
	Service Provider:	  	                                      
  
		
	 Date of Grant:
	  	             
        , 20        (“Date of Grant”)

		
	 Number of Restricted

Units Granted:
	  	              (the
“Restricted Unit Award”)

		
	 Vesting Schedule:
	  	 The restrictions on the Restricted Unit Award will expire and the Restricted Units granted pursuant to the Agreement will become
transferable, except to the extent provided in Section 10 of the Agreement, and nonforfeitable:
  

			
	 Vesting Date
	  	 Vesting Percentage of

Restricted Unit Award

 

					
			
		  		  	provided, however, that such restrictions will expire on such dates only if you remain a Service Provider to the Partnership or its Affiliates continuously from the Date of Grant through the applicable vesting date.
			
		  		  	Notwithstanding anything to the contrary herein or in the Agreement, if your service relationship with the Partnership or any of its Affiliates is terminated due to your death or Disability, then the Forfeiture Restrictions on the
Restricted Unit Award shall immediately lapse, and the Restricted Unit Award will be fully vested as of such termination. For purposes of this Restricted Unit Award, “Disability” shall have the meaning given such term in any
employment agreement between you and the Partnership or its Affiliates. Provided, however, that if there is

					
			
		  		  	no existing employment agreement between you and the Partnership or its Affiliates, the term “Disability” shall mean your inability to perform the essential functions of your position with or without reasonable
accommodation, if required by law, due to physical or mental impairment. The existence of any such Disability shall be certified at the General Partner’s discretion by either the disability carrier of the General Partner or Oasis Petroleum Inc.
or a physician chosen by the Partnership, in its sole discretion. In no event will your employment be terminated as a result of Disability, unless otherwise agreed to by you and the Partnership, until the disability carrier or physician chosen by
the Partnership (as applicable) certifies that the physical or mental condition can be expected to result in death or can be expected to last for a continuous period of not less than 180 consecutive days and the Partnership has provided you with
written notice of termination.

 By your signature and the signature of the Partnership’s representative below, you and the Partnership
hereby acknowledge receipt of the Restricted Unit Award issued on the Date of Grant indicated above, which have been issued under the terms and conditions of the Plan, the Agreement and this Restricted Unit Award Grant Notice, and you agree to be
bound to the terms of each such document. 
 Additionally, you are consenting to receive documents from the Partnership, the General
Partner, and any plan administrator by means of electronic delivery, provided that such delivery complies with the rules, regulations and guidance issued by the Securities and Exchange Commission and any other applicable government agency. This
consent shall be effective for the entire time that you are a participant in the Plan. 
 You acknowledge and agree that (a) you are
not relying upon any determination by the Partnership, its Affiliates, or any of their respective employees, directors, officers, attorneys, or agents (collectively, the “Partnership Parties”) of the Fair Market Value of the
Units on the Date of Grant, (b) you are not relying upon any written or oral statement or representation of the Partnership Parties regarding the tax effects associated with your execution of the Agreement and your receipt, holding and vesting
of the Restricted Unit Award, and (c) in deciding to enter into this Agreement, you are relying on your own judgment and the judgment of the professionals of your choice with whom you have consulted. You hereby release, acquit and forever
discharge the Partnership Parties from all actions, causes of actions, suits, debts, obligations, liabilities, claims, damages, losses, costs and expenses of any nature whatsoever, known or unknown, on account of, arising out of, or in any way
related to the tax effects associated with your execution of the Agreement and your receipt, holding and exercise of the Restricted Unit Award. 

Furthermore, you understand and acknowledge that you should consult with your tax advisor regarding the advisability of filing with the
Internal Revenue Service an election under Section 83(b) of the Code with respect to the Restricted Unit Award for which the restrictions have not lapsed. This election (attached to this Agreement as Exhibit C) must be filed no later
than 30 days after the Date of Grant set forth in this Restricted Unit Award Grant Notice. This 

  
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time period cannot be extended. You acknowledge (a) that you have been advised to consult with a tax advisor regarding the tax consequences of the Restricted Unit Award and (b) that
timely filing of a Section 83(b) election is your sole responsibility, even if you request the Partnership or its representative to file such election on your behalf. 

You further acknowledge receipt of a copy of the Plan and the Agreement and agree to all of the terms and conditions of the Plan and the
Agreement. 
 Note: To accept the Restricted Unit Award, execute this form and return an executed copy to
                         (the “Designated Recipient”) by
                             , 20        . Failure to return the
executed copy to the Designated Recipient by such date will render this issuance invalid. 

  
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	OMP GP LLC,
	a Delaware limited liability company

			
		
	By:      	 	  

	Name:	 	  

	Title:	 	  

			
	
	 Accepted by:
  

	[Name of Grantee]
	
	Date:                                   
                                         
           
	  
 [Name of Designated
Recipient]

	
	Date
Received:                                       
                             

  

			
	Attachments:	  	 Appendix A – Oasis Midstream Partners LP 2017 Long Term Incentive Plan

Appendix B – Restricted Unit Award Agreement
 Appendix C
– Section 83(b) Election

 SIGNATURE PAGE 

TO 

RESTRICTED UNIT AWARD GRANT NOTICE 

 Appendix A 

Oasis Midstream Partners LP 2017 Long Term Incentive Plan 

  
 A-1 

 Appendix B 

Restricted Unit Award Agreement 

  
 B-1 

 Appendix C 

SECTION 83(b) ELECTION 
 The undersigned
taxpayer hereby elects, pursuant to Section 83(b) of the Internal Revenue Code of 1986, as amended, to include in gross income as compensation for services the excess (if any) of the fair market value of the Units (as defined below) over the
amount paid for those Units. 
  

	(1)	The name, social security number and address of the undersigned (the “Taxpayer”), and the taxable year for which this election is being made are: 

 

					
	
           Taxpayer’s Name:
	  		  	                                     
     
			
	
           Taxpayer’s Social
	  		  	
	
           Security Number:
	  		  	            -            -           
       
			
	
           Taxpayer’s Address:
	  		  	                                     
     
			
		  		  	                                     
     
			
	            Taxable Year:
	  		  	Calendar Year 20             

  

	(2)	The property that is the subject of this election is                  Restricted Units (the “Units”)
in Oasis Midstream Partners LP. 

  

	(3)	The property was transferred to the Taxpayer on                     . 

 

	(4)	The property is subject to the following restrictions: The Units issued to the Taxpayer are subject to various transfer restrictions and are subject to forfeiture in the event certain employment conditions are not
satisfied. 

  

	(5)	The fair market value of the property at the time of transfer (determined without regard to any restriction other than a nonlapse restriction as defined in Section 1.83-3(h)
of the Income Tax Regulations) is $                    per Unit. 

 

	(6)	The amount paid by the Taxpayer for the property is $0.00. 

  

	(7)	The amount to include in gross income is $                    . 

The undersigned taxpayer will file this election with the Internal Revenue Service office with which the taxpayer files his or her annual income tax return
not later than 30 days after the date of transfer of the Property. A copy of the election also will be furnished to the person for whom the services were performed. The undersigned is the person performing the services in connection with which the
Property was transferred. 
  

			
	Dated:                                     
                                         
           	  	                                      
                                         
         
		  	Taxpayer’s Signature

  
 C-1

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