Global Self Storage, Inc.
US ˙ NasdaqCM ˙ US37955N1063

SecuritySELF / Global Self Storage, Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership216,175 shares
Latest Disclosed Value $ 1,104,654
Renaissance Technologies Llc reports 0.63% increase in ownership of SELF / Global Self Storage, Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 216,175 shares of Global Self Storage, Inc. (US:SELF) valued at $1,104,654 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 214,825 shares of Global Self Storage, Inc.. This represents a change in shares of 0.63% during the quarter. The current value of the position is $1,100,331 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)
2026-05-14 2026-03-31 13F GLOBAL SELF STORAGE COM 37955N106 216,175 1,350 0.63 1,105 0.82 0.0017
2026-02-12 2025-12-31 13F GLOBAL SELF STORAGE COM 37955N106 214,825 -11,049 -4.89 1,096 -3.61 0.0017
2025-11-13 2025-09-30 13F GLOBAL SELF STORAGE COM 37955N106 225,874 20,899 10.20 1,136 3.84 0.0015
2025-08-13 2025-06-30 13F GLOBAL SELF STORAGE COM 37955N106 204,975 43,400 26.86 1,095 34.40 0.0015
2025-05-14 2025-03-31 13F GLOBAL SELF STORAGE COM 37955N106 161,575 -3,800 -2.30 814 -7.60 0.0012
2025-02-13 2024-12-31 13F GLOBAL SELF STORAGE COM 37955N106 165,375 -8,900 -5.11 881 -2.87 0.0013
2024-11-13 2024-09-30 13F GLOBAL SELF STORAGE COM 37955N106 174,275 -13,140 -7.01 908 -0.33 0.0014
2024-08-09 2024-06-30 13F GLOBAL SELF STORAGE COM 37955N106 187,415 -8,427 -4.30 911 0.0015
2024-05-13 2024-03-31 13F GLOBAL SELF STORAGE COM 37955N106 195,842 21,254 12.17 1 0.0014
2024-02-13 2023-12-31 13F GLOBAL SELF STORAGE COM 37955N106 174,588 66,533 61.57 1 0.0013
2023-11-14 2023-09-30 13F GLOBAL SELF STORAGE COM 37955N106 108,055 -2,001 -1.82 1 0.0009
2023-08-11 2023-06-30 13F GLOBAL SELF STORAGE COM 37955N106 110,056 -16,334 -12.92 1 0.0008
2023-05-12 2023-03-31 13F GLOBAL SELF STORAGE COM 37955N106 126,390 -49,310 -28.06 1 0.0009
2023-02-13 2022-12-31 13F GLOBAL SELF STORAGE COM 37955N106 175,700 36,500 26.22 1 -100.00 0.0012
2022-11-14 2022-09-30 13F GLOBAL SELF STORAGE COM 37955N106 139,200 -7,100 -4.85 816 -0.97 0.0012
2022-08-12 2022-06-30 13F GLOBAL SELF STORAGE COM 37955N106 146,300 11,939 8.89 824 9.57 0.0010
2022-05-13 2022-03-31 13F GLOBAL SELF STORAGE COM 37955N106 134,361 12,161 9.95 752 7.89 0.0009
2022-02-11 2021-12-31 13F GLOBAL SELF STORAGE COM 37955N106 122,200 23,300 23.56 697 36.94 0.0009
2021-11-12 2021-09-30 13F GLOBAL SELF STORAGE COM 37955N106 98,900 25,700 35.11 509 33.60 0.0007
2021-08-13 2021-06-30 13F GLOBAL SELF STORAGE COM 37955N106 73,200 3,899 5.63 381 15.45 0.0005
2021-05-13 2021-03-31 13F GLOBAL SELF STORAGE COM 37955N106 69,301 35,438 104.65 330 142.65 0.0004
2021-02-10 2020-12-31 13F GLOBAL SELF STORAGE COM 37955N106 33,863 9,443 38.67 136 38.78 0.0001
2020-11-13 2020-09-30 13F GLOBAL SELF STORAGE COM 37955N106 24,420 -1,580 -6.08 98 -2.00 0.0001
2020-08-13 2020-06-30 13F GLOBAL SELF STORAGE COM 37955N106 26,000 6,500 33.33 100 47.06 0.0001
2020-05-14 2020-03-31 13F GLOBAL SELF STORAGE COM 37955N106 19,500 -38,500 -66.38 68 -72.69 0.0001
2020-02-13 2019-12-31 13F GLOBAL SELF STORAGE COM 37955N106 58,000 20,295 53.83 249 39.11 0.0002
2019-11-13 2019-09-30 13F GLOBAL SELF STORAGE COM 37955N106 37,705 10,605 39.13 179 75.49 0.0002
2019-08-12 2019-06-30 13F GLOBAL SELF STORAGE COM 37955N106 27,100 5,705 26.67 102 22.89 0.0001
2019-05-14 2019-03-31 13F GLOBAL SELF STORAGE COM 37955N106 21,395 9,695 82.86 83 80.43 0.0001
2019-02-12 2018-12-31 13F GLOBAL SELF STORAGE COM 37955N106 11,700 -25,400 -68.46 46 -70.32 0.0001
2018-11-13 2018-09-30 13F GLOBAL SELF STORAGE COM 37955N106 37,100 1,900 5.40 155 6.16 0.0002
2018-08-13 2018-06-30 13F/A-1 GLOBAL SELF STORAGE COM 37955N106 35,200 4,500 14.66 146 7.35 0.0002
2018-08-13 2018-06-30 13F GLOBAL SELF STORAGE COM 37955N106 30,700 136
2018-05-14 2018-03-31 13F GLOBAL SELF STORAGE COM 37955N106 30,700 -15,996 -34.26 136 -36.74 0.0001
2018-02-13 2017-12-31 13F GLOBAL SELF STORAGE COM 37955N106 46,696 -14,604 -23.82 215 -27.36 0.0002
2017-11-13 2017-09-30 13F GLOBAL SELF STORAGE COM 37955N106 61,300 27,600 81.90 296 79.39 0.0003
2017-08-11 2017-06-30 13F GLOBAL SELF STORAGE COM 37955N106 33,700 5,541 19.68 165 23.13 0.0002
2017-05-12 2017-03-31 13F GLOBAL SELF STORAGE COM 37955N106 28,159 -5,241 -15.69 134 -15.72 0.0002
2017-02-13 2016-12-31 13F GLOBAL SELF STORAGE COM 37955N106 33,400 17,500 110.06 159 89.29 0.0003
2016-11-14 2016-09-30 13F GLOBAL SELF STORAGE COM 37955N106 15,900 15,900 84 0.0001
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.