Sec Form 4 Filing - BOHN LAWRENCE S @ BigCommerce Holdings, Inc. - 2021-11-18

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 BOHN LAWRENCE S 2. Issuer Name and Ticker or Trading Symbol BigCommerce Holdings, Inc. [ BIGC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O GENERAL CATALYST PARTNERS, 20 UNIVERSITY ROAD 4TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 11/18/2021 (Street) CAMBRIDGE, MA02138 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 Series 1 Common Stock 11/18/2021 J( 1 ) 1,361,295 D $ 0 0 I By General Catalyst Group V, L.P.( 2 ) Series 1 Common Stock 11/18/2021 J( 3 ) 81,865 D $ 0 0 I By GC Entrepreneurs Fund V, L.P.( 4 ) Series 1 Common Stock 11/18/2021 J( 5 ) 1,360,546 D $ 0 1,200,000 I By General Catalyst Group V Supplemental, L.P.( 6 ) Series 1 Common Stock 11/18/2021 J( 7 ) 584 A $ 0 54,700 D Series 1 Common Stock 11/18/2021 J( 8 ) 18 A $ 0 54,718 D Series 1 Common Stock 11/18/2021 J( 9 ) 3,957 A $ 0 58,675 D

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 BOHN LAWRENCE S C/O GENERAL CATALYST PARTNERS 20 UNIVERSITY ROAD 4TH FLOOR CAMBRIDGE, MA02138 X Signatures /s/ Christopher McCain as Attorney-in-Fact for Lawrence S. Bohn 11/22/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Effective November 18, 2021, General Catalyst Group V, L.P., a venture capital partnership, distributed in-kind, without consideration, a total of 1,361,295 shares of Series 1 Common Stock of the Issuer to its general and limited partners. ( 2 )The reported securities were held directly by General Catalyst Group V, L.P. General Catalyst GP V, LLC is the general partner of General Catalyst Partners V, L.P., which is the general partner of General Catalyst Group V, L.P. The Reporting Person is a managing director of General Catalyst GP V, LLC, and, as a result, may be deemed to have voting and dispositive power over the shares held by General Catalyst Group V, L.P. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest in such securities. ( 3 )Effective November 18, 2021, GC Entrepreneurs Fund V, L.P., a venture capital partnership, distributed in-kind, without consideration, a total of 81,865 shares of Series 1 Common Stock of the Issuer to its general and limited partners. ( 4 )The reported securities were held directly by GC Entrepreneurs Fund V, L.P. General Catalyst GP V, LLC is the general partner of General Catalyst Partners V, L.P., which is the general partner of GC Entrepreneurs Fund V, L.P. The Reporting Person is a managing director of General Catalyst GP V, LLC, and, as a result, may be deemed to have voting and dispositive power over the shares held by GC Entrepreneurs Fund V, L.P. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest in such securities. ( 5 )Effective November 18, 2021, General Catalyst Group V Supplemental, L.P., a venture capital partnership, distributed in-kind, without consideration, a total of 1,360,546 shares of Series 1 Common Stock of the Issuer to its general and limited partners. ( 6 )The reported securities are held directly by General Catalyst Group V Supplemental, L.P. General Catalyst GP V, LLC is the general partner of General Catalyst Partners V, L.P. The Reporting Person is a managing director of General Catalyst GP V, LLC, and, as a result, may be deemed to have voting and dispositive power over the shares held by General Catalyst Group V Supplemental, L.P. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest in such securities. ( 7 )Represents shares previously reported as held through General Catalyst Partners V, L.P. and which are now owned directly. ( 8 )Represents shares previously reported as held through GC Entrepreneurs Fund V, L.P. and which are now owned directly. ( 9 )Represents shares previously reported as held through General Catalyst Group V Supplemental, L.P. and which are now owned directly.

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