Sec Form 3/A Filing - Whetstone Capital Advisors, LLC @ Backblaze, Inc. - 2021-11-11

FORM 3/A 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 Whetstone Capital Advisors, LLC 2. Issuer Name and Ticker or Trading Symbol Backblaze, Inc. [ BLZE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 2001 SHAWNEE MISSION PARKWAY 3. Date of Earliest Transaction (MM/DD/YY) 11/11/2021 (Street) SHAWNEE MISSION, KS66205 4. If Amendment, Date Original Filed (MM/DD/YY) 11/22/2021 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 Class A Common Stock( 1 ) 783,000( 2 ) I see footnote( 3 )

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 Whetstone Capital Advisors, LLC 2001 SHAWNEE MISSION PARKWAY SHAWNEE MISSION, KS66205 X Signatures David A. Atterbury, Manager of Whetstone Capital Advisors, LLC 11/22/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Filing this Form 3 Amendment in order to update the Title of Security listed in Table I and accompanying footnotes to Class A Common Stock. ( 2 )The filing of this Form 3 shall not be construed as an admission that Whetstone Capital Advisors, LLC ("WCA") or David Atterbury, the manager of WCA, is or was for the purposes of Section 16(a) of the Securities Exchange Act of 1934, as amended, or otherwise the beneficial owner of any of the Class A Common Stock, par value of $0.0001 per share (the "Common Stock"), of BackBlaze, Inc. (the "Issuer") purchased by certain private investment funds advised by WCA (collectively, the "Whetstone Accounts"). Pursuant to Rule 16a-1, both WCA and Mr. Atterbury disclaim such beneficial ownership. ( 3 )WCA holds indirectly the shares of Common Stock of the Issuer through the Whetstone Accounts, for which WCA is the Investment Manager. David Atterbury reports the Common Stock held indirectly by WCA because, as the manager of WCA at the time of purchase, he controlled the disposition and voting of the securities.

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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