Sec Form 4 Filing - Nordhagen Arlen Dale @ National Storage Affiliates Trust - 2018-02-28

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Nordhagen Arlen Dale 2. Issuer Name and Ticker or Trading Symbol National Storage Affiliates Trust [ NSA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Executive Officer (Last) (First) (Middle) 5200 DTC PARKWAY, STE 200 3. Date of Earliest Transaction (MM/DD/YY) 02/28/2018 (Street) GREENWOOD VILLAGE, CO80111 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Class A OP Units ( 1 ) ( 1 ) ( 2 ) ( 3 ) 02/28/2018 A 43,874 ( 2 ) ( 1 )( 2 )( 3 ) ( 4 ) Common shares of beneficial interest, $0.01 par value ( 1 ) 43,874 ( 1 ) ( 2 ) ( 3 ) $ 0 2,563,591 ( 5 ) ( 6 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Nordhagen Arlen Dale 5200 DTC PARKWAY STE 200 GREENWOOD VILLAGE, CO80111 X Chief Executive Officer Signatures Arlen Dale Nordhagen, by Jason Parsont, his Attorney-in-fact 03/02/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to the agreement of limited partnership of NSA OP, LP (the "Partnership"), the Reporting Person has the right to cause the Partnership to redeem all or a portion of the Reporting Person's Class A common units of limited partner interest ("Class A OP Units") for cash in an amount equal to the market value of an equivalent number of the common shares of beneficial interest ("Shares") of National Storage Affiliates Trust (the "Issuer"), or at the Issuer's option, Shares on a one-for-one basis, subject to certain adjustments. ( 2 )The Class A OP Units in this table are comprised of 43,874 Class A OP Units issuable upon the conversion of 43,874 unvested long-term incentive plan units ("LTIP units") in the Partnership which were granted to the Reporting Person pursuant to a 2018 LTIP Unit Award Agreement between the Issuer and the Reporting Person under the Issuer's 2015 Equity Incentive Plan. Of these, 16,508 vest in three annual installments on January 1, 2019, January 1, 2020, and January 1, 2021, subject to continued employment by the Reporting Person and 27,366 represent the maximum amount of LTIP units that can vest on January 1, 2021 contingent upon the achievement of certain performance criteria. ( 3 )The Reporting Person will not earn any of the 27,366 performance-based LTIP units if the minimum performance criteria is not met. The 27,366 performance-based LTIP units are being reported here for informational purposes only. Vested LTIP Units, after achieving parity with Class A OP Units, are eligible to be converted into Class A OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership's agreement of limited partnership. ( 4 )N/A ( 5 )The Reporting Person's total direct and indirect beneficial ownership of Class A OP Units following the reported transaction above is 2,563,591 Class A OP Units, which includes those Class A OP Units previously reported and the Class A OP Units reported herein (together with those securities convertible into, or exchangeable for, such Class A OP Units as specified therein). In connection with a pro rata liquidating distribution by SecurCare BV Member, Ltd. ("BV") to its members, 386,604 previously reported Class A OP Units issuable upon the exchange of 386,604 Class X common units of limited liability company interest (the "Class X Units") held by the Reporting Person through BV in SecurCare American Portfolio, LLC ("SAP"), were distributed as follows: (i) 225,657 to the Reporting Person's wife and (ii) 160,947 to SecurCare Self Storage, Inc., for which the Reporting Person has or shares voting and/or investment power. ( 6 )This filing shall not be deemed to be an admission that the Reporting Person is the beneficial owner of any of the securities reported herein, and the Reporting Person disclaims beneficial ownership of such securities except to the extent of the Reporting Person's pecuniary interest therein.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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