Sec Form 4 Filing - Robertson Stephen @ WillScot Mobile Mini Holdings Corp. - 2021-06-25

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Robertson Stephen 2. Issuer Name and Ticker or Trading Symbol WillScot Mobile Mini Holdings Corp. [ WSC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 4646 E. VAN BUREN STREET, SUITE 400 3. Date of Earliest Transaction (MM/DD/YY) 06/25/2021 (Street) PHOENIX, AZ85008 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 stock, par value $0.0001 per share 06/25/2021 S( 1 ) 14,000,000 ( 1 ) D $ 27.75 29,898,390 ( 3 ) ( 4 ) I ( 5 ) ( 6 ) See footnotes ( 5 ) ( 6 ) Common stock, par value $0.0001 per share 06/25/2021 S( 2 ) 3,900,000 ( 2 ) D $ 27.75 25,998,390 ( 3 ) ( 4 ) I ( 5 ) ( 6 ) See footnotes ( 5 ) ( 6 )

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Robertson Stephen 4646 E. VAN BUREN STREET, SUITE 400 PHOENIX, AZ85008 X X Signatures /s/ Stephen Robertson 06/28/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On June 25, 2021, Sapphire Holding S.a r.l. ("Sapphire") sold an aggregate of 14,000,000 shares of common stock, par value $0.0001 per share (the "Common Stock"), of WillScot Mobile Mini Holdings Corp. (the "Issuer") in a registered underwritten public offering (the "Offering") pursuant to that certain Underwriting Agreement, dated as of June 22, 2021 (the "Underwriting Agreement"), among the Issuer, Sapphire and Morgan Stanley & Co. LLC (the "Underwriter"). The price to the public in the Offering was $27.95 per share. The per share sale price reported in this Form 4 reflects underwriting discounts. ( 2 )On June 25, 2021, in connection with the closing of the Offering, Sapphire sold an aggregate of 3,900,000 shares of Common Stock to the Issuer pursuant to that certain Share Repurchase Agreement, dated June 15, 2021, by and between Sapphire and the Issuer, at a price of $27.75 per share. ( 3 )Includes 100,000 shares of Common Stock owned directly by the Reporting Person. The remaining shares of Common Stock beneficially owned are held by Sapphire. As sole shareholder of Sapphire, TDR Capital II Holdings L.P. may be deemed the beneficial owner of such shares of Common Stock held by Sapphire. As manager of TDR Capital II Holdings L.P., TDR Capital LLP may be deemed the beneficial owner of such shares of Common Stock held by Sapphire. As founding partners of TDR Capital LLP, Stephen Robertson and Manjit Dale may be deemed the beneficial owners of such shares of Common Stock held by Sapphire. Each of TDR Capital II Holdings L.P., TDR Capital LLP, Stephen Robertson and Manjit Dale may be deemed to be the beneficial owner of all or a portion of the securities reported herein. ( 4 )The figure in Column 5 of Table I reflects an additional 4,266 shares of Common Stock, par value $0.0001 per share, than the Form 4 filed by the Reporting Person on June 15, 2021, due to the transfer of 4,266 shares of Common Stock, par value $0.0001 per share, by Gary Lindsay to Sapphire, as reported in Form 4s filed by each of Sapphire and Gary Lindsay on June 15, 2021. ( 5 )As sole shareholder of Sapphire, TDR Capital II Holdings L.P. may be deemed the beneficial owner of such shares of Common Stock held by Sapphire. As manager of TDR Capital II Holdings L.P., TDR Capital LLP may be deemed the beneficial owners of such shares of Common Stock held by Sapphire. As founding partners of TDR Capital LLP, Stephen Robertson and Manjit Dale may be deemed the beneficial owners of such shares of Common Stock held by Sapphire. Each of TDR Capital II Holdings L.P., TDR Capital LLP, Stephen Robertson and Manjit Dale (the "Reporting Persons") may be deemed to be the beneficial owner of all or a portion of the securities reported herein. ( 6 )Each of the Reporting Persons disclaims beneficial ownership of the securities of the Issuer, except to the extent of his pecuniary interest therein. The filing of this report shall not be deemed an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended or otherwise, the Reporting Persons are the beneficial owners of any of the securities reported herein.

Remarks: Sapphire, TDR Capital II Holdings L.P., TDR Capital LLP and Manjit Dale are jointly filing a separate Form 4 disclosing his beneficial ownership interest in the Common Stock, which was submitted on the Securities and Exchange Commission's EDGAR system on or about the date hereof.

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).

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