Sec Form 3 Filing - Napier A Lanham @ Build Acquisition Corp. - 2021-03-16

FORM 3 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 Napier A Lanham 2. Issuer Name and Ticker or Trading Symbol Build Acquisition Corp. [ BGSX.U] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) Co-Chief Executive Officer (Last) (First) (Middle) 3500 JEFFERSON STREET, SUITE 303 3. Date of Earliest Transaction (MM/DD/YY) 03/16/2021 (Street) AUSTIN, TX78731 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

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 Class B Common Stock ( 1 ) ( 1 ) ( 1 ) Class A Common Stock 5,750,000 ( 2 ) I ( 3 ) By Build Acquisition Sponsor LLC

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Napier A Lanham 3500 JEFFERSON STREET, SUITE 303 AUSTIN, TX78731 X X Co-Chief Executive Officer Signatures /s/ A. Lanham Napier 03/16/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Class B Common Stock will automatically convert into the Issuer's Class A Common Stock at the time of the Issuer's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and has no expiration date. ( 2 )Includes up to 750,000 shares of Class B Common Stock that are subject to forfeiture if the underwriters in the Issuer's initial public offering of common stock do not exercise their over-allotment option in full or in part. ( 3 )Shares held directly by Build Acquisition Sponsor LLC (the "Sponsor"). Lanham Napier is a managing member of the Sponsor. As such, Mr. Napier may be deemed to have beneficial ownership of the shares of Class B Common Stock held directly by the Sponsor. Mr. Napier disclaims beneficial ownership of the reported shares other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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