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S-3 424B5 EX-FILING FEES 333-293922 0001298675 CubeSmart N/A The prospectus is not a final prospectus for the related offering. Y Y N N 0001298675 2026-03-02 2026-03-02 0001298675 1 2026-03-02 2026-03-02 0001298675 1 2026-03-02 2026-03-02 0001298675 2 2026-03-02 2026-03-02 0001298675 3 2026-03-02 2026-03-02 0001298675 4 2026-03-02 2026-03-02 iso4217:USD xbrli:pure xbrli:shares

Calculation of Filing Fee Tables

S-3

CubeSmart

Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable

Security Type

Security Class Title

Fee Calculation or Carry Forward Rule

Amount Registered

Proposed Maximum Offering Price Per Unit

Maximum Aggregate Offering Price

Fee Rate

Amount of Registration Fee

Carry Forward Form Type

Carry Forward File Number

Carry Forward Initial Effective Date

Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward

Newly Registered Securities
Fees to be Paid 1 Equity Common Shares, $0.01 par value per share 457(a) 13,510,817 $ 39.72 $ 536,649,651.24 0.0001381 $ 74,111.32
Fees Previously Paid
Carry Forward Securities
Carry Forward Securities

Total Offering Amounts:

$ 536,649,651.24

$ 74,111.32

Total Fees Previously Paid:

$ 0.00

Total Fee Offsets:

$ 74,111.32

Net Fee Due:

$ 0.00

Offering Note

1

Estimated solely for the purpose of calculating the registration fee pursuant to Rule 457(c) under the Securities Act of 1933, as amended (the "Securities Act"), based on the average of the high and low prices of our common shares of beneficial interest, par value $0.01 per share ("Common Shares"), on The New York Stock Exchange on February 24, 2026. The proposed maximum offering price per Common Share will be determined from time to time in connection with, and at the time of, the sale of the Common Shares registered hereunder. This registration fee table shall be deemed to update the "Calculation of Filing Fee Tables" in the Company's Registration Statement on Form S-3 (File No. 333-293922) filed on March 2, 2026 in accordance with Rules 456(b) and 457(r) under the Securities Act.
Table 2: Fee Offset Claims and Sources ☐Not Applicable
Registrant or Filer Name Form or Filing Type File Number Initial Filing Date Filing Date Fee Offset Claimed Security Type Associated with Fee Offset Claimed Security Title Associated with Fee Offset Claimed Unsold Securities Associated with Fee Offset Claimed Unsold Aggregate Offering Amount Associated with Fee Offset Claimed Fee Paid with Fee Offset Source
Rules 457(b) and 0-11(a)(2)
Fee Offset Claims
Fee Offset Sources
Rule 457(p)
Fee Offset Claims 1 CubeSmart S-3 333-270248 03/03/2025 $ 60,611.09 Equity Common Shares, $0.01 par value per share 10,000,000
Fee Offset Claims 2 CubeSmart S-3 333-270248 03/03/2023 $ 13,500.23 Equity Common Shares, $0.01 par value per share 3,510,817
Fee Offset Sources 3 CubeSmart S-3 333-270248 03/03/2025 $ 71,536.06
Fee Offset Sources 4 CubeSmart S-3 333-270248 03/03/2023 $ 13,500.23

Rule 457(p) Statement of Withdrawal, Termination, or Completion:

1

On March 3, 2025, CubeSmart filed a 425(b)(5) prospectus supplement (the "2025 Prospectus Supplement") to the base prospectus contained in its Registration Statement on Form S-3 (File No. 333-270248) (the "2023 Registration Statement") in connection with its "at-the-market" offering program (the "ATM Program"). In connection with the 2025 Prospectus Supplement, CubeSmart owed a filing fee of $85,036.29 to register the offering of 13,510,817 common shares, of which $13,500.23 was applied from registration fees previously paid for unsold securities under the CubeSmart prospectus supplement dated March 3, 2023 (the "2023 Prospectus Supplement") to the base prospectus contained in the 2023 Registration Statement, such that CubeSmart contemporaneously paid a filing fee to the SEC in the amount of $71,536.06 in connection with the 2025 Prospectus Supplement. No shares of beneficial interest were sold under the 2025 Prospectus Supplement and 13,510,817 shares of beneficial interest registered in connection with the ATM Program remain unsold as of the date hereof. CubeSmart has terminated the offering that included the unsold shares of beneficial interest under the 2025 Prospectus Supplement.

2

On March 4, 2020, CubeSmart filed a 425(b)(5) prospectus supplement (the "2020 Prospectus Supplement") to the base prospectus contained in its Registration Statement on Form S-3 (File No. 333-236886) (the "2020 Registration Statement") in connection with the ATM Program. In connection with the 2020 Prospectus Supplement, CubeSmart owed and paid a filing fee of $55,985.08 to register the offering of 14,559,259 common shares. 8,711,961 common shares were sold under the 2020 Prospectus Supplement and the 5,847,298 common shares that remained unsold under the 2020 Prospectus Supplement were carried forward to the 2023 Prospectus Supplement. At the time of filing the 2025 Prospectus Supplement, 3,510,817 common shares remained unsold under the 2023 Prospectus Supplement (the "Unsold Securities"), which represent $13,500.23 of the registration fee paid by CubeSmart contemporaneously with filing the 2020 Prospectus Supplement.

Offset Note

3

Pursuant to Rule 457(p) under the Securities Act, the registration fee of $74,111.32 due under this prospectus supplement is offset by $74,111.32 of the unused registration fee in the aggregate amount of $85,036.29 paid in connection with the 2025 Prospectus Supplement and the Unsold Securities.

4

See Offset Note 3.
Table 3: Combined Prospectuses ☑Not Applicable

Security Type

Security Class Title

Amount of Securities Previously Registered

Maximum Aggregate Offering Price of Securities Previously Registered

Form Type

File Number

Initial Effective Date

N/A N/A N/A N/A N/A N/A N/A N/A