National Storage Affiliates Trust
US ˙ NYSE ˙ US6378701063

SecurityNSA / National Storage Affiliates Trust
InstitutionSei Investments Co
Latest Disclosed Ownership115,694 shares
Latest Disclosed Value $ 3,263,665
Sei Investments Co reports 17.83% increase in ownership of NSA / National Storage Affiliates Trust

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 115,694 shares of National Storage Affiliates Trust (US:NSA) valued at $3,263,728 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 98,189 shares of National Storage Affiliates Trust. This represents a change in shares of 17.83% during the quarter. The current value of the position is $4,967,900 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-02-13 2025-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 115,694 17,505 17.83 3,264 9.98 0.0032
2025-11-13 2025-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 98,189 -241,060 -71.06 2,967 -72.66 0.0032
2025-08-14 2025-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 339,249 -87,049 -20.42 10,853 -35.39 0.0126
2025-05-14 2025-03-31 13F/A-1 NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 426,298 32,140 8.15 16,796 12.41 0.0216
2025-05-13 2025-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 395,708 1,550 15,018 0.0163
2025-02-11 2024-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 394,158 29,063 7.96 14,943 -15.09 0.0192
2024-11-12 2024-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 365,095 -23,900 -6.14 17,598 9.75 0.0229
2024-08-13 2024-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 388,995 32,544 9.13 16,034 14.87 0.0227
2024-05-07 2024-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 356,451 71,831 25.24 13,959 18.26 0.0205
2024-02-14 2023-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 284,620 -71,992 -20.19 11,803 4.29 0.0189
2023-11-14 2023-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 356,612 42,645 13.58 11,319 3.50 0.0203
2023-08-11 2023-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 313,967 63,334 25.27 10,935 4.43 0.0191
2023-05-12 2023-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 250,633 33,156 15.25 10,471 33.30 0.0195
2023-02-10 2022-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 217,477 61,577 39.50 7,855 21.18 0.0175
2022-11-14 2022-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 155,900 43,843 39.13 6,482 15.54 0.0145
2022-08-15 2022-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 112,057 25,816 29.93 5,610 3.70 0.0121
2022-05-13 2022-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 86,241 -18,174 -17.41 5,410 -25.12 0.0109
2022-02-14 2021-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 104,415 -19,412 -15.68 7,225 10.52 0.0136
2021-11-12 2021-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 123,827 -9,721 -7.28 6,537 -3.18 0.0137
2021-08-06 2021-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 133,548 3,469 2.67 6,752 30.00 0.0150
2021-05-12 2021-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 130,079 11,388 9.59 5,194 21.47 0.0131
2021-02-08 2020-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 118,691 3,340 2.90 4,276 13.33 0.0111
2020-12-04 2020-09-30 13F/A-1 NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 115,351 -6,925 -5.66 3,773 7.68 0.0109
2020-11-06 2020-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 115,351 -6,925 3,773 9,084.5451
2020-08-17 2020-06-30 13F/A-1 NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 122,276 -30,623 -20.03 3,504 -22.58 0.0109
2020-08-11 2020-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 102,396 -50,503 3,443 9,339.3208
2020-05-14 2020-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 152,899 50,503 49.32 4,526 31.46 0.0166
2020-02-06 2019-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 102,396 39,978 64.05 3,443 65.29 0.0103
2019-11-12 2019-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 62,418 -8,217 -11.63 2,083 1.91 0.0053
2019-08-14 2019-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 70,635 29,911 73.45 2,044 76.06 0.0067
2019-05-15 2019-03-31 13F NATIONAL STORAGE AFFILIATES COM S3 BEN IN 637870106 40,724 -2,220 -5.17 1,161 6.32 0.0039
2019-02-13 2018-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 42,944 0 0.00 1,092 0.00 0.0039
2018-11-08 2018-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 42,944 -11,435 -21.03 1,092 -34.84 0.0040
2018-08-03 2018-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 54,379 -7 -0.01 1,676 22.87 0.0057
2018-05-11 2018-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 54,386 -24,317 -30.90 1,364 -36.41 0.0052
2018-02-08 2017-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 78,703 -5,289 -6.30 2,145 5.35 0.0074
2017-11-06 2017-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 83,992 -14,845 -15.02 2,036 -10.86 0.0072
2017-07-31 2017-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 98,837 15,906 19.18 2,284 15.24 0.0091
2017-05-05 2017-03-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 82,931 4,324 5.50 1,982 14.24 0.0087
2017-02-02 2016-12-31 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 78,607 37,102 89.39 1,735 99.65 0.0084
2016-11-04 2016-09-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 41,505 37,341 896.76 869 898.85 0.0044
2016-08-11 2016-06-30 13F NATIONAL STORAGE AFFILIATES COM SHS BEN IN 637870106 4,164 4,164 87 0.0005
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.