Giles Jeffrey D

SEC source: 0001856525-26-000026 · wk-form4_1773444261.xml · derivative · entry 2

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Development

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,585

Underlying: Class A Common Stock · 21,585 shares

Expires 2036-03-12

F2 · derivative.exercise_date: The options vest in three equal installments on March 11, 2027, March 11, 2028 and March 11, 2029, subject to the terms of the associated Participant Stock Option Agreement.

SEC source: 0001856525-26-000026 · wk-form4_1773444261.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Development

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,681

F1 · shares: Represents restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock of the Issuer. The RSUs vest in three equal annual installments on March 11, 2027, March 11, 2028 and March 11, 2029, subject to the terms of the associated Participant Restricted Stock Unit Agreement.

SEC source: 0001856525-26-000002 · wk-form4_1769638016.xml · derivative · entry 2

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Development

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,617

Underlying: Class A Common Stock · 10,617 shares

Expires 2036-01-26

F2 · derivative.exercise_date: The options vest in three equal installments on January 26, 2027, January 26, 2028 and January 26, 2029, subject to the terms of the associated Participant Stock Option Agreement.

SEC source: 0001856525-26-000002 · wk-form4_1769638016.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Development

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,660

F1 · shares: Represents restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock of the Issuer. The RSUs vest in three equal annual installments on January 26, 2027, January 26, 2028 and January 26, 2029, subject to the terms of the associated Participant Restricted Stock Unit Agreement.

SEC source: 0001856525-25-000073 · wk-form4_1742259000.xml · derivative · entry 2

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,732

Underlying: Class A Common Stock · 21,732 shares

Expires 2035-03-13

F2 · derivative.exercise_date: The options vest in three equal installments on March 11, 2026, March 11, 2027 and March 11, 2028, subject to the terms of the associated Participant Stock Option Agreement.

SEC source: 0001856525-25-000073 · wk-form4_1742259000.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,083

F1 · shares: Represents restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock of the Issuer. The RSUs vest in three equal annual installments on March 11, 2026, March 11, 2027 and March 11, 2028, subject to the terms of the associated Participant Restricted Stock Unit Agreement.

SEC source: 0001856525-25-000055 · wk-form4_1741900333.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,095

F1 · shares: Represents shares withheld by the Issuer for tax withholding purposes upon the vesting of a portion of restricted stock units ("RSUs") granted to the reporting person.

SEC source: 0001856525-25-000041 · wk-form4_1741733605.xml · nonDerivative · entry 2

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,531

F1 · shares: Represents shares withheld by the Issuer for tax withholding purposes upon the vesting of a portion of restricted stock units ("RSUs") granted to the reporting person.

SEC source: 0001856525-25-000041 · wk-form4_1741733605.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,998

F1 · shares: Represents shares withheld by the Issuer for tax withholding purposes upon the vesting of a portion of restricted stock units ("RSUs") granted to the reporting person.

SEC source: 0001856525-24-000126 · wk-form4_1733439785.xml · derivative · entry 7

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 22,259 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.

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F4 · kind: On December 3, 2024, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 22,259 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock, on a one-for-one basis.

F4 · shares: On December 3, 2024, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 22,259 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock, on a one-for-one basis.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0001856525-24-000126 · wk-form4_1733439785.xml · derivative · entry 6

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 22,259

Underlying: Class A Common Stock · 22,259 shares

Expires not disclosed

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F5 · shares: On December 3, 2024, pursuant to the terms of the LLC Agreement, 22,259 Units held directly by the reporting person were redeemed at the discretion of the reporting person for 22,259 Paired Interests.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0001856525-24-000126 · wk-form4_1733439785.xml · derivative · entry 5

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Indirect · By LLC

Disclosed balance after: 0

Underlying: Class A Common Stock · 22,259 shares

Expires not disclosed

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · derivative.exercise_price: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F5 · shares: On December 3, 2024, pursuant to the terms of the LLC Agreement, 22,259 Units held directly by the reporting person were redeemed at the discretion of the reporting person for 22,259 Paired Interests.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · derivative.exercise_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · derivative.expiration_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F9 · ownership.direct: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

SEC source: 0001856525-24-000126 · wk-form4_1733439785.xml · nonDerivative · entry 4

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,615

F6 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on July 11, 2024.

F7 · price: The price reported represents the weighted average price of shares of Class A common stock sold in multiple transactions at prices ranging from $53.7900 to $55.6100 per share. The reporting person will provide to the Issuer, or the Securities and Exchange Commission staff, upon request, information regarding the number of shares sold at each price within the range.

F3 · balance_after: Includes 14,354 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest on March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in two equal installments on March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 7, 2024 vest in three equal installments on March 7, 2025, March 7, 2026 and March 7, 2027, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001856525-24-000126 · wk-form4_1733439785.xml · nonDerivative · entry 3

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 36,615

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.

F4 · kind: On December 3, 2024, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 22,259 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock, on a one-for-one basis.

F5 · shares: On December 3, 2024, pursuant to the terms of the LLC Agreement, 22,259 Units held directly by the reporting person were redeemed at the discretion of the reporting person for 22,259 Paired Interests.

F3 · balance_after: Includes 14,354 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest on March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in two equal installments on March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 7, 2024 vest in three equal installments on March 7, 2025, March 7, 2026 and March 7, 2027, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001856525-24-000126 · wk-form4_1733439785.xml · nonDerivative · entry 2

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,356

F1 · shares: On December 3, 2024, pursuant to the terms of the Fourth Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of February 13, 2024 (as amended, the "LLC Agreement"), 2 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 2 shares of Class A common stock of the Issuer ("Class A common stock").

F3 · balance_after: Includes 14,354 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest on March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in two equal installments on March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 7, 2024 vest in three equal installments on March 7, 2025, March 7, 2026 and March 7, 2027, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001856525-24-000126 · wk-form4_1733439785.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Indirect · By LLC

Disclosed balance after: 0

F1 · shares: On December 3, 2024, pursuant to the terms of the Fourth Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of February 13, 2024 (as amended, the "LLC Agreement"), 2 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 2 shares of Class A common stock of the Issuer ("Class A common stock").

F2 · ownership.direct: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for shares of Class A common stock, on a one-for-one basis.

SEC source: 0001856525-24-000113 · wk-form4_1728603974.xml · derivative · entry 2

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 232,928

Underlying: Class A Common Stock · 232,928 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of 232,928 Units (the "Transferred Units") transferred by the reporting person to a revocable trust for the benefit of the reporting person, his wife and descendants (the "Trust") on October 8, 2024 (the "Effective Date"). Pursuant to the Third Amended and Restated LLC Agreement of Management Feeder, dated as of July 22, 2021 (as amended, the "LLC Agreement"), such Transferred Units held by the Trust following the transaction being reported herein are redeemable at the discretion of the reporting person for shares of Class B Common Stock of the Issuer ("Class B Common Stock") and limited partnership interests of Core & Main Holdings, LP ("Limited Partnership Interests" and, together with Class B Common Stock, "Paired Interests"), on a one-for-one basis.

F2 · derivative.exercise_price: Pursuant to the terms of an exchange agreement dated as of July 22, 2021 (as amended, the "Exchange Agreement"), Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A Common Stock of the Issuer ("Class A Common Stock") on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A Common Stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each Limited Partnership Interest exchanged, subject to certain exceptions, conditions and adjustments). The shares of Class B Common Stock and Limited Partnership Interests have no expiration date.

F1 · date: Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of 232,928 Units (the "Transferred Units") transferred by the reporting person to a revocable trust for the benefit of the reporting person, his wife and descendants (the "Trust") on October 8, 2024 (the "Effective Date"). Pursuant to the Third Amended and Restated LLC Agreement of Management Feeder, dated as of July 22, 2021 (as amended, the "LLC Agreement"), such Transferred Units held by the Trust following the transaction being reported herein are redeemable at the discretion of the reporting person for shares of Class B Common Stock of the Issuer ("Class B Common Stock") and limited partnership interests of Core & Main Holdings, LP ("Limited Partnership Interests" and, together with Class B Common Stock, "Paired Interests"), on a one-for-one basis.

F2 · date: Pursuant to the terms of an exchange agreement dated as of July 22, 2021 (as amended, the "Exchange Agreement"), Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A Common Stock of the Issuer ("Class A Common Stock") on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A Common Stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each Limited Partnership Interest exchanged, subject to certain exceptions, conditions and adjustments). The shares of Class B Common Stock and Limited Partnership Interests have no expiration date.

F3 · shares: On the Effective Date, the reporting person transferred and assigned the Transferred Units to the Trust.

F1 · derivative.exercise_date: Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of 232,928 Units (the "Transferred Units") transferred by the reporting person to a revocable trust for the benefit of the reporting person, his wife and descendants (the "Trust") on October 8, 2024 (the "Effective Date"). Pursuant to the Third Amended and Restated LLC Agreement of Management Feeder, dated as of July 22, 2021 (as amended, the "LLC Agreement"), such Transferred Units held by the Trust following the transaction being reported herein are redeemable at the discretion of the reporting person for shares of Class B Common Stock of the Issuer ("Class B Common Stock") and limited partnership interests of Core & Main Holdings, LP ("Limited Partnership Interests" and, together with Class B Common Stock, "Paired Interests"), on a one-for-one basis.

F2 · derivative.exercise_date: Pursuant to the terms of an exchange agreement dated as of July 22, 2021 (as amended, the "Exchange Agreement"), Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A Common Stock of the Issuer ("Class A Common Stock") on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A Common Stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each Limited Partnership Interest exchanged, subject to certain exceptions, conditions and adjustments). The shares of Class B Common Stock and Limited Partnership Interests have no expiration date.

F1 · derivative.expiration_date: Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of 232,928 Units (the "Transferred Units") transferred by the reporting person to a revocable trust for the benefit of the reporting person, his wife and descendants (the "Trust") on October 8, 2024 (the "Effective Date"). Pursuant to the Third Amended and Restated LLC Agreement of Management Feeder, dated as of July 22, 2021 (as amended, the "LLC Agreement"), such Transferred Units held by the Trust following the transaction being reported herein are redeemable at the discretion of the reporting person for shares of Class B Common Stock of the Issuer ("Class B Common Stock") and limited partnership interests of Core & Main Holdings, LP ("Limited Partnership Interests" and, together with Class B Common Stock, "Paired Interests"), on a one-for-one basis.

F2 · derivative.expiration_date: Pursuant to the terms of an exchange agreement dated as of July 22, 2021 (as amended, the "Exchange Agreement"), Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A Common Stock of the Issuer ("Class A Common Stock") on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A Common Stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each Limited Partnership Interest exchanged, subject to certain exceptions, conditions and adjustments). The shares of Class B Common Stock and Limited Partnership Interests have no expiration date.

F1 · ownership.direct: Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of 232,928 Units (the "Transferred Units") transferred by the reporting person to a revocable trust for the benefit of the reporting person, his wife and descendants (the "Trust") on October 8, 2024 (the "Effective Date"). Pursuant to the Third Amended and Restated LLC Agreement of Management Feeder, dated as of July 22, 2021 (as amended, the "LLC Agreement"), such Transferred Units held by the Trust following the transaction being reported herein are redeemable at the discretion of the reporting person for shares of Class B Common Stock of the Issuer ("Class B Common Stock") and limited partnership interests of Core & Main Holdings, LP ("Limited Partnership Interests" and, together with Class B Common Stock, "Paired Interests"), on a one-for-one basis.

SEC source: 0001856525-24-000113 · wk-form4_1728603974.xml · derivative · entry 1

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Indirect · By LLC

Disclosed balance after: 22,259

Underlying: Class A Common Stock · 232,928 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of 232,928 Units (the "Transferred Units") transferred by the reporting person to a revocable trust for the benefit of the reporting person, his wife and descendants (the "Trust") on October 8, 2024 (the "Effective Date"). Pursuant to the Third Amended and Restated LLC Agreement of Management Feeder, dated as of July 22, 2021 (as amended, the "LLC Agreement"), such Transferred Units held by the Trust following the transaction being reported herein are redeemable at the discretion of the reporting person for shares of Class B Common Stock of the Issuer ("Class B Common Stock") and limited partnership interests of Core & Main Holdings, LP ("Limited Partnership Interests" and, together with Class B Common Stock, "Paired Interests"), on a one-for-one basis.

F2 · derivative.exercise_price: Pursuant to the terms of an exchange agreement dated as of July 22, 2021 (as amended, the "Exchange Agreement"), Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A Common Stock of the Issuer ("Class A Common Stock") on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A Common Stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each Limited Partnership Interest exchanged, subject to certain exceptions, conditions and adjustments). The shares of Class B Common Stock and Limited Partnership Interests have no expiration date.

F1 · date: Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of 232,928 Units (the "Transferred Units") transferred by the reporting person to a revocable trust for the benefit of the reporting person, his wife and descendants (the "Trust") on October 8, 2024 (the "Effective Date"). Pursuant to the Third Amended and Restated LLC Agreement of Management Feeder, dated as of July 22, 2021 (as amended, the "LLC Agreement"), such Transferred Units held by the Trust following the transaction being reported herein are redeemable at the discretion of the reporting person for shares of Class B Common Stock of the Issuer ("Class B Common Stock") and limited partnership interests of Core & Main Holdings, LP ("Limited Partnership Interests" and, together with Class B Common Stock, "Paired Interests"), on a one-for-one basis.

F2 · date: Pursuant to the terms of an exchange agreement dated as of July 22, 2021 (as amended, the "Exchange Agreement"), Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A Common Stock of the Issuer ("Class A Common Stock") on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A Common Stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each Limited Partnership Interest exchanged, subject to certain exceptions, conditions and adjustments). The shares of Class B Common Stock and Limited Partnership Interests have no expiration date.

F3 · shares: On the Effective Date, the reporting person transferred and assigned the Transferred Units to the Trust.

F1 · derivative.exercise_date: Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of 232,928 Units (the "Transferred Units") transferred by the reporting person to a revocable trust for the benefit of the reporting person, his wife and descendants (the "Trust") on October 8, 2024 (the "Effective Date"). Pursuant to the Third Amended and Restated LLC Agreement of Management Feeder, dated as of July 22, 2021 (as amended, the "LLC Agreement"), such Transferred Units held by the Trust following the transaction being reported herein are redeemable at the discretion of the reporting person for shares of Class B Common Stock of the Issuer ("Class B Common Stock") and limited partnership interests of Core & Main Holdings, LP ("Limited Partnership Interests" and, together with Class B Common Stock, "Paired Interests"), on a one-for-one basis.

F2 · derivative.exercise_date: Pursuant to the terms of an exchange agreement dated as of July 22, 2021 (as amended, the "Exchange Agreement"), Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A Common Stock of the Issuer ("Class A Common Stock") on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A Common Stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each Limited Partnership Interest exchanged, subject to certain exceptions, conditions and adjustments). The shares of Class B Common Stock and Limited Partnership Interests have no expiration date.

F1 · derivative.expiration_date: Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of 232,928 Units (the "Transferred Units") transferred by the reporting person to a revocable trust for the benefit of the reporting person, his wife and descendants (the "Trust") on October 8, 2024 (the "Effective Date"). Pursuant to the Third Amended and Restated LLC Agreement of Management Feeder, dated as of July 22, 2021 (as amended, the "LLC Agreement"), such Transferred Units held by the Trust following the transaction being reported herein are redeemable at the discretion of the reporting person for shares of Class B Common Stock of the Issuer ("Class B Common Stock") and limited partnership interests of Core & Main Holdings, LP ("Limited Partnership Interests" and, together with Class B Common Stock, "Paired Interests"), on a one-for-one basis.

F2 · derivative.expiration_date: Pursuant to the terms of an exchange agreement dated as of July 22, 2021 (as amended, the "Exchange Agreement"), Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A Common Stock of the Issuer ("Class A Common Stock") on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A Common Stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each Limited Partnership Interest exchanged, subject to certain exceptions, conditions and adjustments). The shares of Class B Common Stock and Limited Partnership Interests have no expiration date.

F1 · ownership.direct: Represents securities held by Core & Main Management Feeder, LLC ("Management Feeder") in respect of 232,928 Units (the "Transferred Units") transferred by the reporting person to a revocable trust for the benefit of the reporting person, his wife and descendants (the "Trust") on October 8, 2024 (the "Effective Date"). Pursuant to the Third Amended and Restated LLC Agreement of Management Feeder, dated as of July 22, 2021 (as amended, the "LLC Agreement"), such Transferred Units held by the Trust following the transaction being reported herein are redeemable at the discretion of the reporting person for shares of Class B Common Stock of the Issuer ("Class B Common Stock") and limited partnership interests of Core & Main Holdings, LP ("Limited Partnership Interests" and, together with Class B Common Stock, "Paired Interests"), on a one-for-one basis.

SEC source: 0001856525-25-000021 · wk-form4_1737151237.xml · nonDerivative · entry 3

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,233

F1 · kind: Represents prior share forfeitures to the Issuer for tax withholding purposes upon the vesting of a portion of restricted stock units ("RSUs") granted to the reporting person.

F2 · balance_after: Of the 14,354 RSUs originally granted an aggregate of 1,382 shares of Class A common stock have been forfeited to the Issuer for tax withholdings purposes and an aggregate of 2,739 shares of Class A common stock have vested and sold with 10,233 RSUs remaining unvested, as of the date of this Form 4. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest on March 11, 2025. The RSUs granted on March 10, 2023 vest in two equal installments on March 10, 2025 and March 10, 2026. The RSUs granted on March 7, 2024 vest in three equal installments on March 7, 2025, March 7, 2026 and March 7, 2027. All RSU vesting is subject to the terms of the associated Participant Restricted Stock Unit Agreement.

SEC source: 0001856525-25-000021 · wk-form4_1737151237.xml · nonDerivative · entry 2

Giles Jeffrey D · CIK 0001866555 · EVP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,668

F1 · kind: Represents prior share forfeitures to the Issuer for tax withholding purposes upon the vesting of a portion of restricted stock units ("RSUs") granted to the reporting person.

F2 · balance_after: Of the 14,354 RSUs originally granted an aggregate of 1,382 shares of Class A common stock have been forfeited to the Issuer for tax withholdings purposes and an aggregate of 2,739 shares of Class A common stock have vested and sold with 10,233 RSUs remaining unvested, as of the date of this Form 4. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest on March 11, 2025. The RSUs granted on March 10, 2023 vest in two equal installments on March 10, 2025 and March 10, 2026. The RSUs granted on March 7, 2024 vest in three equal installments on March 7, 2025, March 7, 2026 and March 7, 2027. All RSU vesting is subject to the terms of the associated Participant Restricted Stock Unit Agreement.

SEC source: 0001856525-24-000024 · wk-form4_1710205852.xml · derivative · entry 4

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,062

Underlying: Class A Common Stock · 16,062 shares

Expires 2034-03-07

F5 · derivative.exercise_date: The options vest in three equal installments on March 7, 2025, March 7, 2026 and March 7, 2027, subject to the terms of the associated Participant Stock Option Agreement.

SEC source: 0001856525-24-000024 · wk-form4_1710205852.xml · nonDerivative · entry 2

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,354

F3 · shares: Represents RSUs granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The RSUs vest on March 7, 2027, subject to the terms of the associated Participant Restricted Stock Unit Agreement.

F2 · balance_after: Includes RSUs previously granted to the reporting person.

SEC source: 0001856525-24-000024 · wk-form4_1710205852.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,263

F1 · shares: Represents restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock of the Issuer ("Class A common stock"). The RSUs vest in three equal annual installments on March 7, 2025, March 7, 2026 and March 7, 2027, subject to the terms of the associated Participant Restricted Stock Unit Agreement.

F2 · balance_after: Includes RSUs previously granted to the reporting person.

SEC source: 0000950170-24-015547 · ownership.xml · derivative · entry 6

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 40,000 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.

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F1 · kind: On February 12, 2024, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 40,000 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock of the Issuer ("Class A common stock"), on a one-for-one basis.

F1 · shares: On February 12, 2024, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 40,000 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock of the Issuer ("Class A common stock"), on a one-for-one basis.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0000950170-24-015547 · ownership.xml · derivative · entry 5

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Class A Common Stock · 40,000 shares

Expires not disclosed

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F2 · shares: On February 12, 2024, pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 40,000 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 40,000 Paired Interests.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0000950170-24-015547 · ownership.xml · derivative · entry 4

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Indirect · By LLC

Disclosed balance after: 255,187

Underlying: Class A Common Stock · 40,000 shares

Expires not disclosed

F7 · derivative.exercise_price: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F7 · date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F2 · shares: On February 12, 2024, pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 40,000 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 40,000 Paired Interests.

F7 · derivative.exercise_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F7 · derivative.expiration_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F7 · ownership.direct: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

SEC source: 0000950170-24-015547 · ownership.xml · nonDerivative · entry 2

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,217

F4 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 11, 2023.

F5 · price: The price reported represents the weighted average price of shares of Class A common stock sold in multiple transactions at prices ranging from $43.6900 to $44.5100 per share. The reporting person will provide to the Issuer, or the Securities and Exchange Commission staff, upon request, information regarding the number of shares sold at each price within the range.

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the terms of the associated Participant Restricted Stock Unit Agreement. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the terms of the associated Participant Restricted Stock Unit Agreement.

SEC source: 0000950170-24-015547 · ownership.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 48,217

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: On February 12, 2024, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 40,000 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock of the Issuer ("Class A common stock"), on a one-for-one basis.

F2 · shares: On February 12, 2024, pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 40,000 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 40,000 Paired Interests.

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the terms of the associated Participant Restricted Stock Unit Agreement. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the terms of the associated Participant Restricted Stock Unit Agreement.

SEC source: 0001209191-24-001675 · doc4.xml · derivative · entry 7

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 39,950 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.

F9 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F4 · kind: On January 11, 2024, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 39,950 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock, on a one-for-one basis.

F4 · shares: On January 11, 2024, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 39,950 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock, on a one-for-one basis.

F9 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0001209191-24-001675 · doc4.xml · derivative · entry 6

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 39,950

Underlying: Class A Common Stock · 39,950 shares

Expires not disclosed

F9 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F5 · shares: On January 11, 2024, pursuant to the terms of the LLC Agreement, 39,950 vested Units held directly by the reporting person were redeemed at the discretion of the reporting person for 39,950 Paired Interests.

F9 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0001209191-24-001675 · doc4.xml · derivative · entry 5

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Indirect · By LLC

Disclosed balance after: 295,187

Underlying: Class A Common Stock · 39,950 shares

Expires not disclosed

F8 · derivative.exercise_price: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F9 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F9 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F5 · shares: On January 11, 2024, pursuant to the terms of the LLC Agreement, 39,950 vested Units held directly by the reporting person were redeemed at the discretion of the reporting person for 39,950 Paired Interests.

F8 · derivative.exercise_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F9 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · derivative.expiration_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F9 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · ownership.direct: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

SEC source: 0001209191-24-001675 · doc4.xml · nonDerivative · entry 4

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,217

F6 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 11, 2023.

F7 · price: The price reported represents the weighted average price of shares of Class A common stock sold in multiple transactions at prices ranging from $40.2600 to $41.0700 per share. The reporting person will provide to the Issuer, or the Securities and Exchange Commission staff, upon request, information regarding the number of shares sold at each price within the range.

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001209191-24-001675 · doc4.xml · nonDerivative · entry 3

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 48,217

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.

F4 · kind: On January 11, 2024, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 39,950 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock, on a one-for-one basis.

F5 · shares: On January 11, 2024, pursuant to the terms of the LLC Agreement, 39,950 vested Units held directly by the reporting person were redeemed at the discretion of the reporting person for 39,950 Paired Interests.

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001209191-24-001675 · doc4.xml · nonDerivative · entry 2

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,267

F1 · shares: On January 11, 2024, pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 50 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 50 shares of Class A common stock of the Issuer ("Class A common stock").

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001209191-24-001675 · doc4.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Indirect · By LLC

Disclosed balance after: 2

F1 · shares: On January 11, 2024, pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 50 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 50 shares of Class A common stock of the Issuer ("Class A common stock").

F2 · ownership.direct: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for shares of Class A common stock, on a one-for-one basis.

SEC source: 0001209191-23-031608 · doc4.xml · derivative · entry 6

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 29,998 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.

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F1 · kind: On May 18, 2023, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 29,998 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock of the Issuer ("Class A common stock"), on a one-for-one basis.

F1 · shares: On May 18, 2023, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 29,998 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock of the Issuer ("Class A common stock"), on a one-for-one basis.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0001209191-23-031608 · doc4.xml · derivative · entry 5

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 29,998

Underlying: Class A Common Stock · 29,998 shares

Expires not disclosed

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F2 · shares: On May 18, 2023, pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 29,998 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 29,998 Paired Interests.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0001209191-23-031608 · doc4.xml · derivative · entry 4

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Indirect · By LLC

Disclosed balance after: 335,137

Underlying: Class A Common Stock · 29,998 shares

Expires not disclosed

F7 · derivative.exercise_price: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F7 · date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F2 · shares: On May 18, 2023, pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 29,998 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 29,998 Paired Interests.

F7 · derivative.exercise_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F7 · derivative.expiration_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F7 · ownership.direct: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

SEC source: 0001209191-23-031608 · doc4.xml · nonDerivative · entry 2

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,217

F4 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on January 13, 2023.

F5 · price: The price reported represents the weighted average price of shares of Class A common stock sold in multiple transactions at prices ranging from $26.8800 to $27.6800 per share. The reporting person will provide to the Issuer, or the Securities and Exchange Commission staff, upon request, information regarding the number of shares sold at each price within the range.

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001209191-23-031608 · doc4.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,215

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: On May 18, 2023, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 29,998 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock of the Issuer ("Class A common stock"), on a one-for-one basis.

F2 · shares: On May 18, 2023, pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 29,998 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 29,998 Paired Interests.

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001209191-23-026351 · doc4.xml · derivative · entry 6

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 31,175 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.

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F1 · kind: On April 27, 2023, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 31,175 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock of the Issuer ("Class A common stock"), on a one-for-one basis.

F1 · shares: On April 27, 2023, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 31,175 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock of the Issuer ("Class A common stock"), on a one-for-one basis.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0001209191-23-026351 · doc4.xml · derivative · entry 5

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,175

Underlying: Class A Common Stock · 31,175 shares

Expires not disclosed

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F2 · shares: On April 27, 2023 pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 31,175 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 31,175 Paired Interests.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0001209191-23-026351 · doc4.xml · derivative · entry 4

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Indirect · By LLC

Disclosed balance after: 365,135

Underlying: Class A Common Stock · 31,175 shares

Expires not disclosed

F7 · derivative.exercise_price: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F7 · date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F2 · shares: On April 27, 2023 pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 31,175 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 31,175 Paired Interests.

F7 · derivative.exercise_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F7 · derivative.expiration_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F8 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of the disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sale (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F7 · ownership.direct: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

SEC source: 0001209191-23-026351 · doc4.xml · nonDerivative · entry 2

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,217

F4 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 13, 2022.

F5 · price: The price reported represents the weighted average price of shares of Class A common stock sold in multiple transactions at prices ranging from $26.0000 to $26.0350 per share. The reporting person will provide to the Issuer, or the Securities and Exchange Commission staff, upon request, information regarding the number of shares sold at each price within the range.

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001209191-23-026351 · doc4.xml · nonDerivative · entry 1

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 39,392

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: On April 27, 2023, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 31,175 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock of the Issuer ("Class A common stock"), on a one-for-one basis.

F2 · shares: On April 27, 2023 pursuant to the terms of the Third Amended and Restated LLC Agreement of Core & Main Management Feeder, LLC ("Management Feeder"), dated as of July 22, 2021 (as amended, the "LLC Agreement"), 31,175 vested common units ("Units") held directly by the reporting person were redeemed at the discretion of the reporting person for 31,175 Paired Interests.

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001209191-23-025745 · doc4.xml · derivative · entry 7

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 18,825 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.

F9 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F4 · kind: On April 24, 2023, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 18,825 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock, on a one-for-one basis.

F4 · shares: On April 24, 2023, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 18,825 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock, on a one-for-one basis.

F9 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0001209191-23-025745 · doc4.xml · derivative · entry 6

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,825

Underlying: Class A Common Stock · 18,825 shares

Expires not disclosed

F9 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F5 · shares: On April 24, 2023, pursuant to the terms of the LLC Agreement, 18,825 vested Units held directly by the reporting person were redeemed at the discretion of the reporting person for 18,825 Paired Interests.

F9 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F9 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

SEC source: 0001209191-23-025745 · doc4.xml · derivative · entry 5

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Indirect · By LLC

Disclosed balance after: 396,310

Underlying: Class A Common Stock · 18,825 shares

Expires not disclosed

F8 · derivative.exercise_price: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F9 · derivative.exercise_price: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F9 · date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F5 · shares: On April 24, 2023, pursuant to the terms of the LLC Agreement, 18,825 vested Units held directly by the reporting person were redeemed at the discretion of the reporting person for 18,825 Paired Interests.

F8 · derivative.exercise_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F9 · derivative.exercise_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · derivative.expiration_date: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

F9 · derivative.expiration_date: Pursuant to the terms of the Exchange Agreement, Paired Interests are exchangeable at the discretion of the reporting person for shares of Class A common stock on a one-for-one basis or, at the election of a majority of disinterested members of the Issuer's board of directors, for cash from a substantially concurrent public offering or private sales (based on the price of Class A common stock sold in such public offering or private sale, net of any underwriting discounts and commissions, for each limited partnership interest exchanged, subject to certain exceptions, conditions and adjustments). The Class B common stock and limited partnership interests have no expiration date.

F8 · ownership.direct: Represents securities held by Management Feeder in respect of Units directly held by the reporting person. Pursuant to the LLC Agreement, such vested Units held by the reporting person are redeemable at the discretion of the reporting person for Paired Interests, on a one-for-one basis.

SEC source: 0001209191-23-025745 · doc4.xml · nonDerivative · entry 4

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,217

F6 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 13, 2022.

F7 · price: The price reported represents the weighted average price of shares of Class A common stock sold in multiple transactions at prices ranging from $26.0000 to $26.0500 per share. The reporting person will provide to the Issuer, or the Securities and Exchange Commission staff, upon request, information regarding the number of shares sold at each price within the range.

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date.

SEC source: 0001209191-23-025745 · doc4.xml · nonDerivative · entry 3

Giles Jeffrey D · CIK 0001866555 · VP, Corporate Department

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,044

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.

F4 · kind: On April 24, 2023, pursuant to the terms of an exchange agreement, dated as of July 22, 2021 (as amended, the "Exchange Agreement"), 18,825 shares of Class B common stock of the Issuer ("Class B common stock") and limited partnership interests of Core & Main Holdings, LP (together, a "Paired Interest") were exchanged for shares of Class A common stock, on a one-for-one basis.

F5 · shares: On April 24, 2023, pursuant to the terms of the LLC Agreement, 18,825 vested Units held directly by the reporting person were redeemed at the discretion of the reporting person for 18,825 Paired Interests.

F3 · balance_after: Includes 8,217 restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock. The unvested portion of the RSUs granted on March 11, 2022 vest in two equal installments on March 11, 2024 and March 11, 2025, subject to the reporting person remaining employed with the Issuer through each vesting date. The RSUs granted on March 10, 2023 vest in three equal installments on March 10, 2024, March 10, 2025 and March 10, 2026, subject to the reporting person remaining employed with the Issuer through each vesting date.