W.W. Grainger (GWW) insider buying and selling
Every Table I transaction reported by directors and officers of S&P 500 companies on SEC Form 4 filings (2 business days to file): each row labeled with its official transaction code, nothing filtered out beforehand.
Open-market purchases (code P) are the rare signal, in green; sales (code S) are common and often pre-scheduled (10b5-1). Table II (derivatives) is not included: its prices are exercise prices, not market values. Guide: insider buying.
| Date | Ticker | Insider | Role | Shares | Price | Amount | % of stake | Type / filing |
|---|
Download these transactions as CSV No account, no sign-up. The data is public: it comes from SEC Form 4 filings.
W.W. Grainger, Inc. (GWW) insider buying and selling: no purchases, 9 sales
30 Form 4 Table I transactions filed with the SEC by W.W. Grainger, Inc. insiders between 2025-09-11 and 2026-10-02 (15-month history): 0 open-market purchases and 9 sales, plus 21 transactions under other Form 4 codes, broken down one by one below. The largest open-market trade is a sale of $14.1M by Macpherson Donald G on 2025-12-04.
W.W. Grainger insider buying and selling over the last 12 months
Between Oct 21, 2025 and Oct 20, 2026, W.W. Grainger insiders filed 8 sales worth $33.5M on the open market, and no purchases.
The biggest seller was Macpherson Donald G (Chairman and CEO): $26.0M in 2 sales, out of 6 different sellers.
The largest trade of the period was a sale of $14.1M on Dec 4, 2025, by Macpherson Donald G (Chairman and CEO), under a 10b5-1 plan. Form 4 on sec.gov (0000277135-25-000173).
Of the 8 sales, 4 (50%, $30.1M) carry the 10b5-1 plan flag on the Form 4, meaning they were scheduled months ahead; the other 4 do not.
The last three months show 0 sales, against 3 in the three before. The latest sale from May 12, 2026.
Against its sector (Industrials, 75 companies with an insider page on this site), over the same dates the median is 8 sales and 0 purchases on the open market. W.W. Grainger has more sales than 35 of the other 74, ranks 24 of 75 by net dollars sold, and 28 of the 75 have at least one purchase.
The 20 most important trades
With no open-market purchases, the table starts with GWW's sales, largest first. The full history is in the tool above, already searched.
See all 30 GWW trades in the full history →
| Trade date | Filed | Insider | Role | Amount | Code | Filing |
|---|---|---|---|---|---|---|
| 2025-12-04 | 2025-12-08 | Macpherson Donald G | Chairman and CEO | $14.1M | S — Open-market sale (scheduled 10b5-1)11 Form 4 footnotesF1 Transaction pursuant to a Rule 10b5-1 trading program adopted on September 4, 2025. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $967.95 to $968.91, 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 (2) through (22). F3 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $969.03 to $970.00, inclusive. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $970.04 to $971.00, inclusive. F5 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $971.04 to $971.98, inclusive. F6 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $972.06 to $973.05, inclusive. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $973.07 to $974.06, inclusive. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $974.07 to $975.03, inclusive. F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $975.10 to $976.09, inclusive. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $976.17 to $977.05, inclusive. F11 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $977.73 to $978.66, inclusive. | SEC |
| 2025-12-05 | 2025-12-08 | Macpherson Donald G | Chairman and CEO | $11.8M | S — Open-market sale (scheduled 10b5-1)12 Form 4 footnotesF1 Transaction pursuant to a Rule 10b5-1 trading program adopted on September 4, 2025. F12 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $962.73 to $963.54, inclusive. F13 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $963.80 to $964.72, inclusive. F14 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $967.05 to $968.00, inclusive. F15 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $968.07 to $969.03, inclusive. F16 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $969.07 to $970.05, inclusive. F17 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $970.08 to $971.05, inclusive. F18 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $971.12 to $972.08, inclusive. F19 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $972.13 to $973.12, inclusive. F20 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $973.14 to $974.13, inclusive. F21 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $974.15 to $975.14, inclusive. F22 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $975.16 to $975.80, inclusive. | SEC |
| 2026-03-24 | 2026-03-25 | Merriwether Deidra C | Sr. VP & CFO | $2.5M | S — Open-market sale (scheduled 10b5-1)13 Form 4 footnotesF1 Transaction pursuant to a Rule 10b5-1 trading program adopted on December 23, 2025. F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,044.54 to $1,044.99, 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 (2) through (13). F3 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,047.54 to $1,048.49, inclusive. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,050.78 to $1,050.78, inclusive. F5 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,059.84 to $1,060.70, inclusive. F6 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,063.37 to $1,064.35, inclusive. F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,064.41 to $1,064.77, inclusive. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,066.19 to $1,067.08, inclusive. F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,067.26 to $1,068.20, inclusive. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,068.27 to $1,069.17, inclusive. F11 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,069.81 to $1,070.64, inclusive. F12 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,070.96 to $1,071.75, inclusive. F13 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,071.98 to $1,072.93, inclusive. | SEC |
| 2026-05-12 | 2026-05-14 | Robbins Paige K | Sr. VP | $1.8M | S — Open-market sale5 Form 4 footnotesF1 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). F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at price ranging from $1,231.19 to $1,232.12, inclusive. F3 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 $1,233.36, inclusive. F4 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. F5 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. | SEC |
| 2026-04-02 | 2026-04-02 | Merriwether Deidra C | Sr. VP & CFO | $1.7M | S — Open-market sale (scheduled 10b5-1)7 Form 4 footnotesF7 Transaction pursuant to Rule 10b5-1 trading program adopted on December 23, 2025. F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,112.10 to $1,112.88, 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 (8) through (13). F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,113.87 to $1,114.05, inclusive. F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,115.07 to $1,115.76, inclusive. F11 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,116.24 to $1,117.23, inclusive. F12 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,117.35 to $1,118.17, inclusive. F13 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,118.37 to $1,119.22, inclusive. | SEC |
| 2026-05-12 | 2026-05-14 | Leroy Jonny M | SVP, Chief Technology Officer | $1.1M | S — Open-market sale5 Form 4 footnotesF1 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,228.99 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). F2 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. F3 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. F4 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. F5 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. | SEC |
| 2025-09-09 | 2025-09-11 | Leroy Jonny M | SVP, Chief Technology Officer | $496k | S — Open-market sale | SEC |
| 2026-05-12 | 2026-05-14 | Thomson Laurie R | VP, Controller | $386k | S — Open-market sale4 Form 4 footnotesF1 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). F2 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. F3 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. F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at price ranging from $1,236.29 to $1,236.54, inclusive. | SEC |
| 2025-12-16 | 2025-12-17 | Berardinelli Krantz Nancy L | Sr. VP & CLO | $200k | S — Open-market sale | SEC |
| 2025-12-04 | 2025-12-08 | Macpherson Donald G | Chairman and CEO | $5.8M | M — Option exercise (scheduled 10b5-1)Form 4 footnoteF1 Transaction pursuant to a Rule 10b5-1 trading program adopted on September 4, 2025. | SEC |
| 2026-04-01 | 2026-04-02 | Macpherson Donald G | Chairman and CEO | $4.3M | F — Tax withholding (shares surrendered for taxes)4 Form 4 footnotesF2 Shares withheld for tax withholding for the PSU settlement described in footnote 1. F4 Shares withheld for tax withholding for the partial settlement of the April 1, 2023 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vested in three tranches, where 1/3 vested on April 1, 2024, 1/3 vested on April 1, 2025, and the remainder vested on April 1, 2026. F5 Shares withheld for tax withholding for the partial settlement of the April 1, 2024 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on April 1, 2025, 1/3 vested on April 1, 2026, and the remainder vests on April 1, 2027. F6 Shares withheld for tax withholding for the partial settlement of the April 1, 2025 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on April 1, 2026, 1/3 vests on April 1, 2027, and the remainder vests on April 1, 2028. | SEC |
| 2025-12-05 | 2025-12-08 | Macpherson Donald G | Chairman and CEO | $3.8M | M — Option exercise (scheduled 10b5-1)Form 4 footnoteF1 Transaction pursuant to a Rule 10b5-1 trading program adopted on September 4, 2025. | SEC |
| 2026-04-01 | 2026-04-02 | Merriwether Deidra C | Sr. VP & CFO | $1.3M | F — Tax withholding (shares surrendered for taxes) (scheduled 10b5-1)4 Form 4 footnotesF2 Shares withheld for tax withholding for the PSU settlement described in footnote 1. F4 Shares withheld for tax withholding for the partial settlement of the April 1, 2023 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vested in three tranches, where 1/3 vested on April 1, 2024, 1/3 vested on April 1, 2025, and the remainder vested on April 1, 2026. F5 Shares withheld for tax withholding for the partial settlement of the April 1, 2024 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on April 1, 2025, 1/3 vested on April 1, 2026, and the remainder vests on April 1, 2027. F6 Shares withheld for tax withholding for the partial settlement of the April 1, 2025 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on April 1, 2026, 1/3 vests on April 1, 2027, and the remainder vests on April 1, 2028. | SEC |
| 2026-04-01 | 2026-04-02 | Robbins Paige K | Sr. VP | $1.2M | F — Tax withholding (shares surrendered for taxes)4 Form 4 footnotesF2 Shares withheld for tax withholding for the PSU settlement described in footnote 1. F4 Shares withheld for tax withholding for the partial settlement of the April 1, 2023 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vested in three tranches, where 1/3 vested on April 1, 2024, 1/3 vested on April 1, 2025, and the remainder vested on April 1, 2026. F5 Shares withheld for tax withholding for the partial settlement of the April 1, 2024 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on April 1, 2025, 1/3 vested on April 1, 2026, and the remainder vests on April 1, 2027. F6 Shares withheld for tax withholding for the partial settlement of the April 1, 2025 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on April 1, 2026, 1/3 vests on April 1, 2027, and the remainder vests on April 1, 2028. | SEC |
| 2026-04-01 | 2026-04-02 | Berardinelli Krantz Nancy L | Sr. VP & CLO | $842k | F — Tax withholding (shares surrendered for taxes)4 Form 4 footnotesF2 Shares withheld for tax withholding for the PSU settlement described in footnote 1. F4 Shares withheld for tax withholding for the partial settlement of the April 1, 2023 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vested in three tranches, where 1/3 vested on April 1, 2024, 1/3 vested on April 1, 2025, and the remainder vested on April 1, 2026. F5 Shares withheld for tax withholding for the partial settlement of the April 1, 2024 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on April 1, 2025, 1/3 vested on April 1, 2026, and the remainder vests on April 1, 2027. F6 Shares withheld for tax withholding for the partial settlement of the April 1, 2025 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on April 1, 2026, 1/3 vests on April 1, 2027, and the remainder vests on April 1, 2028. | SEC |
| 2026-03-24 | 2026-03-25 | Merriwether Deidra C | Sr. VP & CFO | $728k | M — Option exercise (scheduled 10b5-1)Form 4 footnoteF1 Transaction pursuant to a Rule 10b5-1 trading program adopted on December 23, 2025. | SEC |
| 2026-05-01 | 2026-05-05 | Tinto Melanie J | SVP & Chief HR Officer | $606k | F — Tax withholding (shares surrendered for taxes)2 Form 4 footnotesF1 Shares withheld for tax withholding for the partial settlement of the May 1, 2025 award of restricted stock units (RSUs). The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on May 1, 2026, 1/3 vests on May 1, 2027, and the remainder vests on May 1, 2028. F2 Shares withheld for tax withholding for the partial settlement of the May 1, 2025 award of restricted stock units (RSUs). The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/2 vested on May 1, 2026, 1/4 vests on May 1, 2027, and the remainder vests on May 1, 2028. | SEC |
| 2026-04-01 | 2026-04-02 | Leroy Jonny M | SVP, Chief Technology Officer | $392k | F — Tax withholding (shares surrendered for taxes)4 Form 4 footnotesF2 Shares withheld for tax withholding for the PSU settlement described in footnote 1. F4 Shares withheld for tax withholding for the partial settlement of the April 1, 2023 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vested in three tranches, where 1/3 vested on April 1, 2024, 1/3 vested on April 1, 2025, and the remainder vested on April 1, 2026. F5 Shares withheld for tax withholding for the partial settlement of the April 1, 2024 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on April 1, 2025, 1/3 vested on April 1, 2026, and the remainder vests on April 1, 2027. F6 Shares withheld for tax withholding for the partial settlement of the April 1, 2025 award of RSUs. The RSU award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-for-one basis. This award vests in three tranches, where 1/3 vested on April 1, 2026, 1/3 vests on April 1, 2027, and the remainder vests on April 1, 2028. | SEC |
| 2026-02-01 | 2026-02-04 | Berardinelli Krantz Nancy L | Sr. VP & CLO | $204k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF2 Shares withheld for tax withholding upon the February 1, 2026 vesting and partial settlement of the February Award, as described in footnote 1 above. | SEC |
| 2025-02-01 | 2026-02-04 | Berardinelli Krantz Nancy L | Sr. VP & CLO | $200k | F — Tax withholding (shares surrendered for taxes)Form 4 footnoteF1 Shares withheld for tax withholding for the partial settlement of the February 1, 2023 award of restricted stock units (the "February Award"). The February Award will be settled after vesting by the delivery of unrestricted shares of common stock on a one-to-one basis. The February Award vests in three equal tranches, with 1/3 vesting on each of February 1, 2024, February 1, 2025 and February 1, 2026. Due to an administrative error, the February 1, 2025 vesting was not reported at the time of vesting. | SEC |
The period balance: money in, money out
In the Form 4 filings submitted between Sep 11, 2025 and Oct 2, 2026 there is not one open-market purchase of W.W. Grainger, Inc.: 9 sales worth $34.0M and zero dollars bought.
Only codes P and S count, where an insider puts in or takes out their own money. A selling balance like W.W. Grainger, Inc.'s is the norm in the S&P 500, where much of the pay comes as stock. It is not a recommendation to buy or sell: it is what was filed.
Every transaction, code by code
| Code | What it means | Trades | Reported amount |
|---|---|---|---|
| F | Tax withholding (shares surrendered for taxes) | 9 | $9.1M |
| S | Open-market sale | 9 | $34.0M |
| A | Grant or award | 8 | $0 |
| M | Option exercise | 3 | $10.3M |
| G | Gift | 1 | $0 |
| Total | Everything filed in the period | 30 | $53.4M |
9 of the 30 rows carry no usable amount on the Form 4: they count as trades and add $0. The code labels come from the SEC index.
Who has traded
Over the 15 months of history, 7 distinct people or entities have filed W.W. Grainger, Inc. transactions: none bought on the open market and 6 sold. Counted by CIK, the fixed number the SEC gives each filer, and not by name, which each filer types their own way.
Of the 6 who sold on the open market (9 sales in all), the three biggest sellers account for $31.9M of the $34.0M: 94% of the money in three people.
| Filer | Role | Transactions | Bought (count) | Sold (count) | Last filed |
|---|---|---|---|---|---|
| Macpherson Donald G | Chairman and CEO | 7 | — | $26.0M (2) | 2026-04-02 |
| Merriwether Deidra C | Sr. VP & CFO | 5 | — | $4.1M (2) | 2026-04-02 |
| Robbins Paige K | Sr. VP | 3 | — | $1.8M (1) | 2026-05-14 |
| Leroy Jonny M | SVP, Chief Technology Officer | 4 | — | $1.5M (2) | 2026-05-14 |
| Thomson Laurie R | Interim CFO and VP, Controller | 4 | — | $386k (1) | 2026-10-02 |
| Berardinelli Krantz Nancy L | Sr. VP & CLO | 5 | — | $200k (1) | 2026-04-02 |
| Tinto Melanie J | SVP & Chief HR Officer | 2 | — | — | 2026-05-05 |
The name links to all their trades, in any company. "Transactions" counts any code; the money, open market only. Role: from their latest filing.
Month by month
By the month the trade was executed, not the month it was filed; months with no trades show zero. The busiest month was Dec 2025: 0 purchases and 3 sales, worth $26.2M. 10 of the 15 months have none.
| Month | Purchases | Amount | Sales | Amount |
|---|---|---|---|---|
| Aug 2025 | 0 | $0 | 0 | $0 |
| Sep 2025 | 0 | $0 | 1 | $496k |
| Oct 2025 | 0 | $0 | 0 | $0 |
| Nov 2025 | 0 | $0 | 0 | $0 |
| Dec 2025 | 0 | $0 | 3 | $26.2M |
| Jan 2026 | 0 | $0 | 0 | $0 |
| Feb 2026 | 0 | $0 | 0 | $0 |
| Mar 2026 | 0 | $0 | 1 | $2.5M |
| Apr 2026 | 0 | $0 | 1 | $1.7M |
| May 2026 | 0 | $0 | 3 | $3.2M |
| Jun 2026 | 0 | $0 | 0 | $0 |
| Jul 2026 | 0 | $0 | 0 | $0 |
| Aug 2026 | 0 | $0 | 0 | $0 |
| Sep 2026 | 0 | $0 | 0 | $0 |
| Oct 2026 | 0 | $0 | 0 | $0 |
The last month may be partial: a Form 4 is filed up to two business days later. The table does not say whether the pattern is good or bad; it says when it happened.
W.W. Grainger, Inc. (GWW) analysis page →
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How to read this data
4 of the 9 sales in the table are flagged as scheduled (10b5-1 plan): signed months ahead and executed automatically, so they say nothing about what the insider thinks today. W.W. Grainger has no open-market purchase (code P) in the history, the most common case in the S&P 500: insiders are already paid in stock. The latest filing is from Oct 2, 2026, and a Form 4 arrives up to two business days after the trade.
18 of the 20 rows in the table carry footnotes from the Form 4 itself, folded into the code column and copied verbatim; a row with no footnote means the filing has none.
Guide: Insider buying · all guides
What is behind these trades
The concepts on this page, explained from scratch in the Academy. Free, no account.
- What the efficiency hypothesis says and what it does NOT sayIf an insider's purchase is public and anyone can read it, is there any information left in it? That is the exact question that brings people here.
- Who really moves the market: the types of investorWho sits on the other side of each order, and where a company's own insiders fit among them.
- Supply, demand and price: why it rises and falls constantlyHow a piece of news ends up inside the price, and why the reaction to a filed sale is rarely the one you would expect.
Source: SEC EDGAR Form 4. This is a list of public facts, not financial advice or a recommendation to buy or sell.