Sec Form 4 Filing - EGGERTON LISA @ BigCommerce Holdings, Inc. - 2021-10-18

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 EGGERTON LISA 2. Issuer Name and Ticker or Trading Symbol BigCommerce Holdings, Inc. [ BIGC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Marketing Officer (Last) (First) (Middle) 11305 FOUR POINTS DRIVE, BUILDING II, THIRD FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 10/18/2021 (Street) AUSTIN, TX78726 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 10/18/2021 M( 1 ) 1,000 A $ 2.7 70,294 D Series 1 Common Stock 10/18/2021 S( 2 ) 1,000 D $ 53.25 69,294 D Series 1 Common Stock 10/18/2021 M( 3 ) 1,521 A $ 2.7 1,521 I ( 4 ) By Ex-Spouse Series 1 Common Stock 10/18/2021 S( 5 ) 600 D $ 53.3183 ( 6 ) 921 I ( 7 ) By Ex-Spouse Series 1 Common Stock 10/18/2021 S( 5 ) 921 D $ 54.5016 ( 8 ) 0 I ( 7 ) By Ex-Spouse Series 1 Common Stock 10/18/2021 M( 3 ) 7,844 A $ 2.7 7,844 I ( 4 ) By Ex-Spouse Series 1 Common Stock 10/18/2021 S( 5 ) 3,552 D $ 54.5016 ( 9 ) 4,292 I ( 7 ) By Ex-Spouse Series 1 Common Stock 10/18/2021 S( 5 ) 4,292 D $ 55.3104 ( 10 ) 0 I ( 7 ) By Ex-Spouse

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 Incentive Stock Option (Right to buy) $ 2.7 10/18/2021 M( 3 ) 1,521 09/20/2018( 11 ) 09/20/2028 Series 1 Common Stock 1,521 $ 0 1,358 I ( 12 ) By Ex-Spouse Non-Qualified Stock Option (Right to Buy) $ 2.7 10/18/2021 M( 3 ) 7,844 09/20/2018( 11 ) 09/20/2028 Series 1 Common Stock 7,844 $ 0 29,975 I ( 12 ) By Ex-Spouse Non-Qualified Stock Option (Right to Buy) $ 2.7 10/18/2021 M( 1 ) 1,000 09/20/2018( 11 ) 09/20/2028 Series 1 Common Stock 1,000 $ 0 77,334 D Incentive Stock Option (Right to Buy) $ 2.7 09/20/2018( 11 ) 09/20/2028 Series 1 Common Stock 12,401 12,401 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other EGGERTON LISA 11305 FOUR POINTS DRIVE BUILDING II, THIRD FLOOR AUSTIN, TX78726 Chief Marketing Officer Signatures /s /Jeff Mengoli, Attorney-in-Fact for Lisa Eggerton 10/20/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The stock option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 30, 2020 and modified on August 18, 2021. ( 10 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $55.05 to $56.0499, inclusive. The reporting person undertakes to provide to BigCommerce Holdings, Inc., any security holder of BigCommerce Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price with the ranges set forth in Footnote 10 to this Form 4. ( 11 )Option was immediately exercisable on the date of grant. ( 12 )Options, which, pursuant to the terms of the Issuers equity incentive plan, are not transferable pursuant to a divorce decree, are held in thename of the reporting person for the benefit of the reporting persons ex-spouse pursuant to a divorce decree. ( 2 )The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 30, 2020 and modified on August 18, 2021. ( 3 )The stock option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 30, 2020. ( 4 )The shares were acquired pursuant to an option exercise at the direction of, and are held for the benefit of, the reporting person's former spouse pursuant to a divorce decree. The reporting person disclaims beneficial ownership of these shares ( 5 )This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 30, 2020. ( 6 )The price reported in Column 4 is a weighted average pri ce. These shares were sold in multiple transactions at prices ranging from $53.00 to $53.99, inclusive. The reporting person undertakes to provide to BigCommerce Holdings, Inc., any security holder of BigCommerce Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price with the ranges set forth in Footnote 6 to this Form 4. ( 7 )The shares underlying this sale are held in the name of the reporting person for the benefit of the reporting persons ex-spouse pursuant to a divorce decree. ( 8 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.05 to $55.0499, inclusive. The reporting person undertakes to provide to BigCommerce Holdings, Inc., any security holder of BigCommerce Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price with the ranges set forth in Footnote 8 to this Form 4. ( 9 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.05 to $55.0499, inclusive. The reporting person undertakes to provide to BigCommerce Holdings, Inc., any security holder of BigCommerce Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price with the ranges set forth in Footnote 9 to this Form 4.

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