SEC Form 4
Washington, D.C. 20549


Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
Van Mourick Mark

(Last) (First) (Middle)


(City) (State) (Zip)
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
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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
Common shares of beneficial interest, $0.01 par value(1) 03/15/2018 C 13,667(1)(2) A $0(1) 13,667(1)(2)(3) I See Footnote(1)(2)
Common shares of beneficial interest, $0.01 par value 03/16/2018 S 13,667(4) D $25.64(5) 0(2)(3) I See Footnote(1)(2)
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 (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 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 (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (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: 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) 03/15/2018 C 13,667(1) (1) (6) Common shares of beneficial interest, $0.01 par value 13,667 $0(1) 104,374(1)(2)(3) I See Footnote(1)(2)
Explanation of Responses:
1. The Reporting Person redeemed 13,667 Class A common units of limited partner interest (the "Class A OP Units") of NSA OP, LP (the "Partnership"), of which National Storage Affiliates Trust (the "Issuer") is the general partner. These Class A OP Units were held by The Tricia Van Mourick Separate Property Trust U/A dated 03/29/2012, which received 13,667 common shares of beneficial interest ("Shares") of the Issuer upon redemption. The Shares are held in a trust for the benefit of the Reporting Person's spouse and children. The Reporting Person's spouse is trustee of the trust.
2. 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.
3. The Reporting Person's total direct and indirect beneficial ownership following the reported transactions above is (i) 0 Shares, and (ii) 104,374 Class A OP Units (which includes those securities convertible into, or exchangeable for, such Class A OP Units as previously reported). The 104,374 Class A OP Units referred to above do not include derivative securities of other classes or non-derivative securities of the Reporting Person that were previously reported.
4. Represents Shares of the Issuer sold in the open market.
5. The price reported in Column 4 is a weighted average price. These Shares of the Issuer were sold in multiple transactions ranging from $25.55 to $25.84, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Shares of the Issuer sold at each separate price within the ranges set forth in this footnote (5).
6. N/A
Mark Van Mourick, by Jason Parsont, his Attorney-in-fact 03/19/2018
** Signature of Reporting Person Date
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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.