GWW · W.W. Grainger, Inc. · Insider Trading

October 1, 2026 award of restricted stock units ("RSU"). All RSUs will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award will vest in three tranches, where 1/3 vests on October 1, 2027, 1/3 vests on October 1, 2028, and the remainder vests on October 1, 2029.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

Shares held in a family trust for which Mr. Novich serves as a co-trustee.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

The stock units were gifted to the reporting person's spouse and were subsequently transferred by the spouse into a family trust of which the reporting person is trustee and primary beneficiary. The reporting person has voting and investment power with respect to all stock units held by the family trust.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

Shares held in a trust for which Ms. Jaspon's spouse serves as a co-trustee, and her spouse and any mutual descendants of her and her spouse are beneficiaries.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

Shares held in a family trust for which Mr. Novich serves as a co-trustee.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

Shares held in a trust for which Ms. Jaspon's spouse serves as a co-trustee, and her spouse and any mutual descendants of her and her spouse are beneficiaries.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

The stock units were gifted to the reporting person's spouse and were subsequently transferred by the spouse into a family trust of which the reporting person is trustee and primary beneficiary. The reporting person has voting and investment power with respect to all stock units held by the family trust.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at price ranging from $1,233.28 to $1,234.25, inclusive.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at price ranging from $1,234.39 to $1,235.20, inclusive.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

The stock units were gifted to the reporting person's spouse and were subsequently transferred by the spouse into a family trust of which the reporting person is trustee and primary beneficiary. The reporting person has voting and investment power with respect to all stock units held by the family trust.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at price ranging from $1,231.24 to $1,231.94, inclusive.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at price ranging from $1,232.37 to $1,233.34, inclusive.

1-for-1

The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director.

Shares held in a trust for which Ms. Jaspon's spouse serves as a co-trustee, and her spouse and any mutual descendants of her and her spouse are beneficiaries.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at price ranging from $1,234.44 to $1,234.97, inclusive.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at price ranging from $1,233.37 to $1,234.19, inclusive.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,230.45 to $1,231.03, inclusive. The reporting person undertakes to provide W.W. Grainger, Inc., any security holder of W.W. Grainger, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) through (4).

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at price ranging from $1,229.99 to $1,230.74, inclusive.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,229.26 to $1,229.80, inclusive. The reporting person undertakes to provide W.W. Grainger, Inc., any security holder of W.W. Grainger, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) through (5).

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at price ranging from $1,233.38 to $1,233.48, inclusive.