ACVA

SEC source: 0001628280-24-026045 · wk-form4_1717186867.xml · nonDerivative · entry 1

KAMERICK EILEEN A · CIK 0001044530 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,239

F1 · shares: Represents a restricted stock unit (RSU) award. The RSUs will vest on the first anniversary of the grant date, provided that the RSUs shall become fully vested as of the day immediately preceding the next Annual Meeting if such date is sooner than first anniversary of the grant date. Vesting of the RSUs is subject in all cases to the Reporting Person's continuous services through the applicable vesting date.

SEC source: 0001628280-24-026040 · wk-form4_1717186521.xml · nonDerivative · entry 1

Hirsch Brian · CIK 0001851605 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,759

F1 · shares: Represents a restricted stock unit (RSU) award. The RSUs will vest on the first anniversary of the grant date, provided that the RSUs shall become fully vested as of the day immediately preceding the next Annual Meeting if such date is sooner than first anniversary of the grant date. Vesting of the RSUs is subject in all cases to the Reporting Person's continuous services through the applicable vesting date.

SEC source: 0001628280-24-026052 · wk-form4_1717186945.xml · nonDerivative · entry 1

Castillo Kirsten · CIK 0001808806 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,239

F1 · shares: Represents a restricted stock unit (RSU) award. The RSUs will vest on the first anniversary of the grant date, provided that the RSUs shall become fully vested as of the day immediately preceding the next Annual Meeting if such date is sooner than first anniversary of the grant date. Vesting of the RSUs is subject in all cases to the Reporting Person's continuous services through the applicable vesting date.

SEC source: 0001628280-24-026042 · wk-form4_1717186783.xml · nonDerivative · entry 1

Radecki Brian J · CIK 0001402193 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,239

F1 · shares: Represents a restricted stock unit (RSU) award. The RSUs will vest on the first anniversary of the grant date, provided that the RSUs shall become fully vested as of the day immediately preceding the next Annual Meeting if such date is sooner than first anniversary of the grant date. Vesting of the RSUs is subject in all cases to the Reporting Person's continuous services through the applicable vesting date.

SEC source: 0000950170-24-067277 · ownership.xml · nonDerivative · entry 3

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,239

F4 · shares: The shares reported in this transaction represent Refresher Grant Restricted Stock Units ("RSUs"), each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs will vest on the first anniversary of the Refresher Grant Date, provided that, the RSUs shall become fully vested as of the day immediately preceding the next Annual Meeting, if sooner. Vesting of the RSUs is subject in all cases to the Eligible Director's Continuous Service (as defined in the Plan) through each such applicable vesting date.

F4 · price: The shares reported in this transaction represent Refresher Grant Restricted Stock Units ("RSUs"), each RSU represents the contingent right to receive one share of the Issuer's Class A common stock. The RSUs will vest on the first anniversary of the Refresher Grant Date, provided that, the RSUs shall become fully vested as of the day immediately preceding the next Annual Meeting, if sooner. Vesting of the RSUs is subject in all cases to the Eligible Director's Continuous Service (as defined in the Plan) through each such applicable vesting date.

SEC source: 0001628280-24-026434 · wk-form4_1717450855.xml · nonDerivative · entry 1

Chamoun George · CIK 0001419488 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 961,245

F1 · shares: The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, or later upon the date on or prior to July 1, 2027 that the Registrant's Class A Common Stock achieves a specified average price, as measured over a 30- trading day period, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-24-032094 · wk-form4_1721248384.xml · nonDerivative · entry 1

JONES RENE F · CIK 0001245773 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,239

F1 · date: This Form 4 is being filed late to inadvertent administrative error.

F2 · shares: Represents a restricted stock unit (RSU) award. The RSUs will vest on the first anniversary of the grant date, provided that the RSUs shall become fully vested as of the day immediately preceding the next Annual Meeting if such date is sooner than first anniversary of the grant date. Vesting of the RSUs is subject in all cases to the Reporting Person's continuous services through the applicable vesting date.

SEC source: 0001628280-25-031037 · wk-form4_1749760904.xml · derivative · entry 4

Chamoun George · CIK 0001419488 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 91,705

Underlying: Class A Common Stock · 91,705 shares

Expires 2027-07-01

F4 · kind: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

F5 · derivative.exercise_date: The PSUs are subject to both service-based vesting conditions and a requirement that the average closing price of the Class A Common Stock of Company, as measured over a period of 30 trading days commencing at the grant date and ending July 1, 2027, equals or exceeds a designated level (the "Stock Price Condition"). The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, provided that the Stock Price Condition has been satisfied prior to the relevant date. If the Stock Price Condition has not yet been satisfied prior to the relevant date, then the PSUs that otherwise would have vested on such date will remain unvested unless and until the Stock Price Condition has been satisfied, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-25-031037 · wk-form4_1749760904.xml · nonDerivative · entry 3

Chamoun George · CIK 0001419488 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,654,367

F4 · kind: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

SEC source: 0001628280-24-025833 · wk-form4_1717102178.xml · nonDerivative · entry 1

Anderson Craig Eric · CIK 0001852174 · CCDSO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 299,981

F1 · shares: Represents a restricted stock unit ("RSU") award. The RSUs will vest in sixteen (16) substantially equal installments beginning July 1, 2024, subject to the Reporting Person's continuous service through each such date.

SEC source: 0001628280-24-025835 · wk-form4_1717102267.xml · nonDerivative · entry 1

Mehta Vikas · CIK 0001852328 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 462,083

F1 · shares: Represents a restricted stock unit ("RSU") award. The RSUs will vest in sixteen (16) substantially equal installments beginning July 1, 2024, subject to the Reporting Person's continuous service through each such date.

SEC source: 0001628280-24-025828 · wk-form4_1717101928.xml · nonDerivative · entry 1

Waterman Michael · CIK 0001851495 · Chief Sales Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 367,726

F1 · shares: Represents a restricted stock unit ("RSU") award. The RSUs will vest in sixteen (16) substantially equal installments beginning July 1, 2024, subject to the Reporting Person's continuous service through each such date.

SEC source: 0001415889-24-014939 · form4-05302024_110529.xml · derivative · entry 10

Hirsch Brian · CIK 0001851605 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Tribeca Venture Fund II New York, L.P.

Disclosed balance after: 1,241,859

Underlying: Class A Common Stock · 310,465 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: These shares of Class B common stock were converted into Class A common stock on a one-for-one basis for no additional consideration.

F11 · price: Each share of Class B common stock will convert automatically into one share of Class A common stock for no consideration upon any transfer, except for certain permitted transfers, and has no expiration date.

F11 · derivative.exercise_date: Each share of Class B common stock will convert automatically into one share of Class A common stock for no consideration upon any transfer, except for certain permitted transfers, and has no expiration date.

F11 · derivative.expiration_date: Each share of Class B common stock will convert automatically into one share of Class A common stock for no consideration upon any transfer, except for certain permitted transfers, and has no expiration date.

F3 · ownership.nature: The shares are held by Tribeca Venture Fund II New York, L.P. ("TVFII NY"). TVP II GP is the general partner of TVFII NY. The Reporting Person is a managing partner of TVP II GP. The Reporting Person disclaims beneficial ownership of the shares held by TVFII NY, except to the extent of his pecuniary interest, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares.

SEC source: 0001415889-24-014939 · form4-05302024_110529.xml · derivative · entry 9

Hirsch Brian · CIK 0001851605 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Tribeca Venture Fund II, L.P.

Disclosed balance after: 3,725,574

Underlying: Class A Common Stock · 931,394 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: These shares of Class B common stock were converted into Class A common stock on a one-for-one basis for no additional consideration.

F11 · price: Each share of Class B common stock will convert automatically into one share of Class A common stock for no consideration upon any transfer, except for certain permitted transfers, and has no expiration date.

F11 · derivative.exercise_date: Each share of Class B common stock will convert automatically into one share of Class A common stock for no consideration upon any transfer, except for certain permitted transfers, and has no expiration date.

F11 · derivative.expiration_date: Each share of Class B common stock will convert automatically into one share of Class A common stock for no consideration upon any transfer, except for certain permitted transfers, and has no expiration date.

F2 · ownership.nature: The shares are held by Tribeca Venture Fund II, L.P. ("TVFII"). Tribeca Venture Partners II GP, LLC ("TVP II GP") is the general partner of TVFII. The Reporting Person is a managing partner of TVP II GP. The Reporting Person disclaims beneficial ownership of the shares held by TVFII, except to the extent of his pecuniary interest, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares.

SEC source: 0001415889-24-014939 · form4-05302024_110529.xml · nonDerivative · entry 7

Hirsch Brian · CIK 0001851605 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,741

F9 · kind: Represents receipt of shares in the distribution in kind described in footnote (8).

SEC source: 0001415889-24-014939 · form4-05302024_110529.xml · nonDerivative · entry 6

Hirsch Brian · CIK 0001851605 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Tribeca Venture Partners II GP, LLC

Disclosed balance after: 0

F8 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by TVP II GP to its members without additional consideration.

F7 · ownership.nature: The shares are held by TVP II GP. The Reporting Person is a managing partner of TVP II GP. The Reporting Person disclaims beneficial ownership of the shares held by TVP II GP, except to the extent of his pecuniary interest, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares.

SEC source: 0001415889-24-014939 · form4-05302024_110529.xml · nonDerivative · entry 5

Hirsch Brian · CIK 0001851605 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Tribeca Venture Partners II GP, LLC

Disclosed balance after: 252,224

F6 · kind: Represents receipt of shares in the distributions in kind described in footnotes (4) and (5).

F7 · ownership.nature: The shares are held by TVP II GP. The Reporting Person is a managing partner of TVP II GP. The Reporting Person disclaims beneficial ownership of the shares held by TVP II GP, except to the extent of his pecuniary interest, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares.

SEC source: 0001415889-24-014939 · form4-05302024_110529.xml · nonDerivative · entry 4

Hirsch Brian · CIK 0001851605 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Tribeca Venture Fund II New York, L.P.

Disclosed balance after: 0

F5 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by TVFII NY to its general partner and limited partners without additional consideration.

F3 · ownership.nature: The shares are held by Tribeca Venture Fund II New York, L.P. ("TVFII NY"). TVP II GP is the general partner of TVFII NY. The Reporting Person is a managing partner of TVP II GP. The Reporting Person disclaims beneficial ownership of the shares held by TVFII NY, except to the extent of his pecuniary interest, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares.

SEC source: 0001415889-24-014939 · form4-05302024_110529.xml · nonDerivative · entry 3

Hirsch Brian · CIK 0001851605 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Tribeca Venture Fund II, L.P.

Disclosed balance after: 0

F4 · kind: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by TVFII to its general partner and limited partners without additional consideration.

F2 · ownership.nature: The shares are held by Tribeca Venture Fund II, L.P. ("TVFII"). Tribeca Venture Partners II GP, LLC ("TVP II GP") is the general partner of TVFII. The Reporting Person is a managing partner of TVP II GP. The Reporting Person disclaims beneficial ownership of the shares held by TVFII, except to the extent of his pecuniary interest, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares.

SEC source: 0001415889-24-014939 · form4-05302024_110529.xml · nonDerivative · entry 2

Hirsch Brian · CIK 0001851605 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Tribeca Venture Fund II New York, L.P.

Disclosed balance after: 310,465

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: These shares of Class B common stock were converted into Class A common stock on a one-for-one basis for no additional consideration.

F3 · ownership.nature: The shares are held by Tribeca Venture Fund II New York, L.P. ("TVFII NY"). TVP II GP is the general partner of TVFII NY. The Reporting Person is a managing partner of TVP II GP. The Reporting Person disclaims beneficial ownership of the shares held by TVFII NY, except to the extent of his pecuniary interest, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares.

SEC source: 0001415889-24-014939 · form4-05302024_110529.xml · nonDerivative · entry 1

Hirsch Brian · CIK 0001851605 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Tribeca Venture Fund II, L.P.

Disclosed balance after: 931,394

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: These shares of Class B common stock were converted into Class A common stock on a one-for-one basis for no additional consideration.

F2 · ownership.nature: The shares are held by Tribeca Venture Fund II, L.P. ("TVFII"). Tribeca Venture Partners II GP, LLC ("TVP II GP") is the general partner of TVFII. The Reporting Person is a managing partner of TVP II GP. The Reporting Person disclaims beneficial ownership of the shares held by TVFII, except to the extent of his pecuniary interest, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such shares.

SEC source: 0001628280-24-025830 · wk-form4_1717102028.xml · nonDerivative · entry 1

Fitzgerald Leanne · CIK 0001783261 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 424,202

F1 · shares: Represents a restricted stock unit ("RSU") award. The RSUs will vest in sixteen (16) substantially equal installments beginning July 1, 2024, subject to the Reporting Person's continuous service through each such date.

SEC source: 0001628280-24-025840 · wk-form4_1717102349.xml · nonDerivative · entry 1

ZERELLA WILLIAM · CIK 0001493307 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 454,759

F1 · shares: Represents a restricted stock unit ("RSU") award. The RSUs will vest in sixteen (16) substantially equal installments beginning July 1, 2024, subject to the Reporting Person's continuous service through each such date.

SEC source: 0000950170-24-067277 · ownership.xml · derivative · entry 7

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Class B Common Stock · 0 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · shares: Represents 30,001 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 24,036 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 497 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

F1 · price: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · derivative.underlying_shares: Represents 30,001 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 24,036 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 497 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

F5 · balance_after: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

F8 · balance_after: As of the date hereof, BVP IX, BVP IX Inst, and 15 Angels hold 3,589,544, 2,875,771, and 59,471 shares of Class B Stock, respectively.

F5 · ownership.nature: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

SEC source: 0000950170-24-067277 · ownership.xml · nonDerivative · entry 2

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · kind: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F3 · shares: On May 28, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 30,001, 24,036 and 497 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $19.20. These shares were sold in multiple transactions at prices ranging from $18.75 to $19.62. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3 · price: On May 28, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 30,001, 24,036 and 497 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $19.20. These shares were sold in multiple transactions at prices ranging from $18.75 to $19.62. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3 · ownership.nature: On May 28, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 30,001, 24,036 and 497 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $19.20. These shares were sold in multiple transactions at prices ranging from $18.75 to $19.62. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F5 · ownership.nature: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

SEC source: 0000950170-24-067277 · ownership.xml · nonDerivative · entry 1

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F1 · shares: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · price: Represents 30,001 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 24,036 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 497 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

F1 · ownership.nature: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · ownership.nature: Represents 30,001 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 24,036 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 497 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

SEC source: 0001628280-24-026438 · wk-form4_1717451059.xml · nonDerivative · entry 1

Anderson Craig Eric · CIK 0001852174 · CCDSO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 340,083

F1 · shares: The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, or later upon the date on or prior to July 1, 2027 that the Registrant's Class A Common Stock achieves a specified average price, as measured over a 30- trading day period, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-24-026443 · wk-form4_1717451269.xml · nonDerivative · entry 1

Mehta Vikas · CIK 0001852328 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 522,995

F1 · shares: The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, or later upon the date on or prior to July 1, 2027 that the Registrant's Class A Common Stock achieves a specified average price, as measured over a 30- trading day period, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-24-026440 · wk-form4_1717451177.xml · nonDerivative · entry 1

Waterman Michael · CIK 0001851495 · Chief Sales Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 396,584

F1 · shares: The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, or later upon the date on or prior to July 1, 2027 that the Registrant's Class A Common Stock achieves a specified average price, as measured over a 30- trading day period, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-24-026445 · wk-form4_1717451369.xml · nonDerivative · entry 1

Fitzgerald Leanne · CIK 0001783261 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 464,304

F1 · shares: The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, or later upon the date on or prior to July 1, 2027 that the Registrant's Class A Common Stock achieves a specified average price, as measured over a 30- trading day period, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-24-026436 · wk-form4_1717450943.xml · nonDerivative · entry 1

ZERELLA WILLIAM · CIK 0001493307 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 515,671

F1 · shares: The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, or later upon the date on or prior to July 1, 2027 that the Registrant's Class A Common Stock achieves a specified average price, as measured over a 30-trading day period, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-25-025978 · wk-form4_1747340901.xml · derivative · entry 7

Waterman Michael · CIK 0001851495 · Chief Sales Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 60,912

Underlying: Class A Common Stock · 60,912 shares

Expires 2027-07-01

F3 · shares: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

F6 · derivative.exercise_date: The PSUs are subject to both service-based vesting conditions and a requirement that the average closing price of the Class A Common Stock of Company, as measured over a period of 30 trading days commencing at the grant date and ending July 1, 2027, equals or exceeds a designated level (the "Stock Price Condition"). The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, provided that the Stock Price Condition has been satisfied prior to the relevant date. If the Stock Price Condition has not yet been satisfied prior to the relevant date, then the PSUs that otherwise would have vested on such date will remain unvested unless and until the Stock Price Condition has been satisfied, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-25-025978 · wk-form4_1747340901.xml · nonDerivative · entry 4

Waterman Michael · CIK 0001851495 · Chief Sales Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 405,636

F3 · shares: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

SEC source: 0001628280-25-034349 · wk-form4_1751581473.xml · derivative · entry 5

Anderson Craig Eric · CIK 0001852174 · CCDSO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,102

Underlying: Common Stock · 40,102 shares

Expires 2027-07-01

F2 · kind: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

F5 · derivative.exercise_date: The PSUs are subject to both service-based vesting conditions and a requirement that the average closing price of the Class A Common Stock of Company, as measured over a period of 30 trading days commencing at the grant date and ending July 1, 2027, equals or exceeds a designated level (the "Stock Price Condition"). The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, provided that the Stock Price Condition has been satisfied prior to the relevant date. If the Stock Price Condition has not yet been satisfied prior to the relevant date, then the PSUs that otherwise would have vested on such date will remain unvested unless and until the Stock Price Condition has been satisfied, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-25-034349 · wk-form4_1751581473.xml · nonDerivative · entry 1

Anderson Craig Eric · CIK 0001852174 · CCDSO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 367,981

F1 · security: The company's stock previously referred to as Class A Common Stock is now referred to as Common Stock following changes made to the company's articles of incorporation. There was no change to any rights related to the stock.

F2 · shares: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

SEC source: 0001628280-25-034341 · wk-form4_1751581183.xml · derivative · entry 5

Mehta Vikas · CIK 0001852328 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,912

Underlying: Common Stock · 60,912 shares

Expires 2027-07-01

F2 · kind: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

F5 · derivative.exercise_date: The PSUs are subject to both service-based vesting conditions and a requirement that the average closing price of the Class A Common Stock of Company, as measured over a period of 30 trading days commencing at the grant date and ending July 1, 2027, equals or exceeds a designated level (the "Stock Price Condition"). The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, provided that the Stock Price Condition has been satisfied prior to the relevant date. If the Stock Price Condition has not yet been satisfied prior to the relevant date, then the PSUs that otherwise would have vested on such date will remain unvested unless and until the Stock Price Condition has been satisfied, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-25-034341 · wk-form4_1751581183.xml · nonDerivative · entry 1

Mehta Vikas · CIK 0001852328 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 608,674

F1 · security: The company's stock previously referred to as Class A Common Stock is now referred to as Common Stock following changes made to the company's articles of incorporation. There was no change to any rights related to the stock.

F2 · shares: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

SEC source: 0001628280-25-034337 · wk-form4_1751581061.xml · derivative · entry 6

Fitzgerald Leanne · CIK 0001783261 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,102

Underlying: Common Stock · 40,102 shares

Expires 2027-07-01

F2 · kind: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

F5 · derivative.exercise_date: The PSUs are subject to both service-based vesting conditions and a requirement that the average closing price of the Class A Common Stock of Company, as measured over a period of 30 trading days commencing at the grant date and ending July 1, 2027, equals or exceeds a designated level (the "Stock Price Condition"). The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, provided that the Stock Price Condition has been satisfied prior to the relevant date. If the Stock Price Condition has not yet been satisfied prior to the relevant date, then the PSUs that otherwise would have vested on such date will remain unvested unless and until the Stock Price Condition has been satisfied, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-25-034337 · wk-form4_1751581061.xml · nonDerivative · entry 1

Fitzgerald Leanne · CIK 0001783261 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 438,569

F1 · security: The company's stock previously referred to as Class A Common Stock is now referred to as Common Stock following changes made to the company's articles of incorporation. There was no change to any rights related to the stock.

F2 · shares: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

SEC source: 0001628280-25-034344 · wk-form4_1751581325.xml · derivative · entry 5

ZERELLA WILLIAM · CIK 0001493307 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,912

Underlying: Common Stock · 60,912 shares

Expires 2027-07-01

F2 · kind: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

F4 · derivative.exercise_date: The PSUs are subject to both service-based vesting conditions and a requirement that the average closing price of the Class A Common Stock of Company, as measured over a period of 30 trading days commencing at the grant date and ending July 1, 2027, equals or exceeds a designated level (the "Stock Price Condition"). The PSUs will vest in one-third installments on each of July 1, 2025, 2026 and 2027, provided that the Stock Price Condition has been satisfied prior to the relevant date. If the Stock Price Condition has not yet been satisfied prior to the relevant date, then the PSUs that otherwise would have vested on such date will remain unvested unless and until the Stock Price Condition has been satisfied, subject to the Reporting Person's continuous service through the relevant vesting date.

SEC source: 0001628280-25-034344 · wk-form4_1751581325.xml · nonDerivative · entry 1

ZERELLA WILLIAM · CIK 0001493307 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 874,966

F1 · security: The company's stock previously referred to as Class A Common Stock is now referred to as Common Stock following changes made to the company's articles of incorporation. There was no change to any rights related to the stock.

F2 · shares: In a Form 4 filed on June 3, 2024 the PSU grant reflected here, due to an administrative error, was reported as Class A Common Stock in Table I rather than a PSU grant in Table II. The PSUs are hereby being removed from Table I and correctly reported in Table II.

SEC source: 0000950170-24-064916 · ownership.xml · nonDerivative · entry 3

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · kind: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F4 · shares: On May 24, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 78,963, 63,262, and 2,123 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.89. These shares were sold in multiple transactions at prices ranging from $18.75 to $19.10. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F4 · price: On May 24, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 78,963, 63,262, and 2,123 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.89. These shares were sold in multiple transactions at prices ranging from $18.75 to $19.10. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F4 · ownership.nature: On May 24, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 78,963, 63,262, and 2,123 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.89. These shares were sold in multiple transactions at prices ranging from $18.75 to $19.10. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F5 · ownership.nature: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

SEC source: 0000950170-24-063256 · ownership.xml · nonDerivative · entry 4

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · kind: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F5 · shares: On May 21, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 142,648, 114,282, and 2,363 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.99. These shares were sold in multiple transactions at prices ranging from $18.63 to $19.22. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F5 · price: On May 21, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 142,648, 114,282, and 2,363 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.99. These shares were sold in multiple transactions at prices ranging from $18.63 to $19.22. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F5 · ownership.nature: On May 21, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 142,648, 114,282, and 2,363 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.99. These shares were sold in multiple transactions at prices ranging from $18.63 to $19.22. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F6 · ownership.nature: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

SEC source: 0000950170-24-064916 · ownership.xml · derivative · entry 7

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Class B Common Stock · 0 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · shares: Represents 128,158 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 102,675 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 2,123 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

F1 · price: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · derivative.underlying_shares: Represents 128,158 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 102,675 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 2,123 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

F5 · balance_after: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

F8 · balance_after: As of the date hereof, BVP IX, BVP IX Inst, and 15 Angels hold 3,589,544, 2,875,771, and 59,471 shares of Class B Stock, respectively.

F5 · ownership.nature: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

SEC source: 0000950170-24-064916 · ownership.xml · nonDerivative · entry 2

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · kind: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F3 · shares: On May 21, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 49,195, 39,413, and 2,123 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.99. These shares were sold in multiple transactions at prices ranging from $18.70 to $18.95. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3 · price: On May 21, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 49,195, 39,413, and 2,123 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.99. These shares were sold in multiple transactions at prices ranging from $18.70 to $18.95. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3 · ownership.nature: On May 21, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 49,195, 39,413, and 2,123 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.99. These shares were sold in multiple transactions at prices ranging from $18.70 to $18.95. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F5 · ownership.nature: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

SEC source: 0000950170-24-064916 · ownership.xml · nonDerivative · entry 1

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F1 · shares: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · price: Represents 128,158 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 102,675 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 2,123 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

F1 · ownership.nature: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · ownership.nature: Represents 128,158 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 102,675 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 2,123 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

SEC source: 0000950170-24-063256 · ownership.xml · nonDerivative · entry 3

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · kind: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F4 · shares: On May 20, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 67,484, 54,065, and 1,118 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.68. These shares were sold in multiple transactions at prices ranging from $18.50 to $18.77. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F4 · price: On May 20, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 67,484, 54,065, and 1,118 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.68. These shares were sold in multiple transactions at prices ranging from $18.50 to $18.77. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F4 · ownership.nature: On May 20, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 67,484, 54,065, and 1,118 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.68. These shares were sold in multiple transactions at prices ranging from $18.50 to $18.77. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F6 · ownership.nature: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

SEC source: 0000950170-24-063256 · ownership.xml · nonDerivative · entry 2

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

F1 · kind: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F3 · shares: On May 17, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 94,028, 75,330, and 1,558 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.66. These shares were sold in multiple transactions at prices ranging from $18.23 to $18.85. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3 · price: On May 17, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 94,028, 75,330, and 1,558 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.66. These shares were sold in multiple transactions at prices ranging from $18.23 to $18.85. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3 · ownership.nature: On May 17, 2024, BVP IX, BVP IX Inst, and 15 Angels sold 94,028, 75,330, and 1,558 shares of Class A Common Stock of ACV Auctions, Inc., respectively, at a weighted average price of $18.66. These shares were sold in multiple transactions at prices ranging from $18.23 to $18.85. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F6 · ownership.nature: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

SEC source: 0000950170-24-063256 · ownership.xml · nonDerivative · entry 1

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F1 · shares: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · price: Represents 304,160 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 243,677 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 5,039 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

F1 · ownership.nature: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · ownership.nature: Represents 304,160 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 243,677 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 5,039 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

SEC source: 0000950170-24-062024 · ownership.xml · derivative · entry 10

GOODMAN ROBERT P · CIK 0001252022 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Class B Common Stock · 0 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F5 · shares: Represents 97,479 shares converted from Class B Common Stock to Class A Common Stock by BVP IX, 78,110 shares converted from Class B Common Stock to Class A Common Stock by BVP IX Inst, and 1,615 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels.

F1 · price: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F1 · derivative.exercise_date: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F1 · derivative.expiration_date: Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.

F2 · derivative.underlying_shares: Represents 121,655 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX L.P. ("BVP IX"), 97,464 shares converted from Class B Common Stock to Class A Common Stock by Bessemer Venture Partners IX Institutional L.P. ("BVP IX Inst"), and 2,015 shares converted from Class B Common Stock to Class A Common Stock by 15 Angels III LLC. ("15 Angels" and together with BVP IX and BVP IX Inst, the "BVP IX Funds")

F7 · balance_after: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.

F10 · balance_after: As of the date hereof, BVP IX, BVP IX Inst, and 15 Angels hold 1,421,130, 1,137,934, and 23,544 shares of Class B Stock, respectively.

F7 · ownership.nature: The Reporting Person is a director of Deer IX & Co. Ltd. ("Deer IX Ltd.") which is the general partner of Deer IX & Co. L.P. ("Deer IX LP"), which is the general partner of the BVP IX Funds The Reporting Person disclaims beneficial ownership of the securities held by BVP IX Funds, except to the extent of his pecuniary interest, if any, in such securities by virtue of his interest in Deer IX Ltd. and Deer IX LP and his indirect interest in the BVP IX Funds. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities.