X0306 4 2015-05-01 0 0001618563 National Storage Affiliates Trust NSA 0001306273 OSGOOD STEVEN G 6745 ENGLE ROAD SUITE 300 MIDDLEBURG HEIGHTS OH 44130 1 0 0 0 Class A OP Units 2015-05-01 4 A 0 80140 13.10 A Common shares of beneficial interest, $0.01 par value 80140 80140 I See Footnote Class A OP Units Common shares of beneficial interest, $0.01 par value 14400 14400 D One year after the date of the completion of the initial public offering of the Issuer, the Reporting Person will have the right to cause NSA OP, LP (the "Partnership") to redeem all or a portion of the Reporting Person's Class A common units of limited partner interest in the Partnership ("Class A OP Units") for cash in an amount equal to the market value of an equivalent number of the Issuer's common shares, or at the Issuer's option, common shares on a one-for-one basis, subject to certain adjustments. The Class A OP Units in this row include 4,800 Class A OP Units issuable upon the conversion of 4,800 vested long-term incentive plan units in the Partnership ("LTIP units") and 9,600 Class A OP Units issuable upon conversion of 9,600 unvested LTIP units. The unvested LTIP units were granted to the Reporting Person under the Issuer's 2013 Long-Term Incentive Plan, and vest along a schedule at certain times prior to December 31, 2017. upon the achievement of certain performance goals, or upon the completion of the Issuer's initial public offering. Consists of the Reporting Person's pecuniary interest in Class A OP Units held by Square Foot Sunbelt LLC, for which the Reporting Person has or shares voting and investment power. N/a The Reporting Person's total direct and indirect beneficial ownership following the reported transaction above is 94,540 Class A OP Units, which includes 4,800 Class A OP Units issuable upon the conversion of 4,800 vested LTIP units and 9,600 Class A OP Units issuable upon conversion of 9,600 unvested LTIP units. Steven G. Osgood, by Jason Parsont, its Attorney-in-fact 2015-05-05