As of the latest Form 4 filed Mar 25, 2026.
What WW Grainger Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 39 most recent filings for GWW.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C Sr. VP & CFO | SSale | −120.00 | $1,072.56 | $129K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −120.00 | $1,071.32 | $129K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −240.00 | $1,070.18 | $257K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −331.00 | $1,068.79 | $354K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −195.00 | $1,067.95 | $208K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −354.00 | $1,066.69 | $378K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −150.00 | $1,064.57 | $160K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −349.00 | $1,064.06 | $371K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −200.00 | $1,060.38 | $212K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −80.00 | $1,050.78 | $84.1K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −160.00 | $1,048.02 | $168K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | SSale | −40.00 | $1,044.84 | $41.8K | Yes (planned) | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Merriwether Deidra C, Sr. VP & CFO | MExercise | +2.34K | $311.26 | $728K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G Chairman and CEO | SSale | −493.00 | $975.34 | $481K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −4.18K | $974.47 | $4.08M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −1.90K | $973.65 | $1.85M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −1.27K | $972.77 | $1.23M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −1.02K | $971.77 | $994K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −1.38K | $970.41 | $1.34M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −691.00 | $969.77 | $670K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −824.00 | $968.59 | $798K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −240.00 | $967.46 | $232K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −1.00 | $965.19 | $965.19 | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −111.00 | $964.06 | $107K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | SSale | −48.00 | $962.93 | $46.2K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-05 | Macpherson Donald G, Chairman and CEO | MExercise | +12.2K | $311.26 | $3.79M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | GGift | −3.98K | $0.00 | $0.00 | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | SSale | −200.00 | $978.41 | $196K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | SSale | −720.00 | $976.58 | $703K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | SSale | −1.84K | $975.42 | $1.80M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | SSale | −2.97K | $974.45 | $2.90M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | SSale | −2.55K | $973.68 | $2.48M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | SSale | −1.16K | $972.62 | $1.13M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | SSale | −1.01K | $971.41 | $986K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | SSale | −755.00 | $970.46 | $733K | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | SSale | −1.40K | $969.41 | $1.36M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | SSale | −1.91K | $968.85 | $1.85M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | MExercise | +8.00K | $311.26 | $2.49M | Yes (planned) | Form 4 ↗ |
| 2025-12-08 | 2025-12-04 | Macpherson Donald G, Chairman and CEO | MExercise | +10.5K | $311.26 | $3.27M | Yes (planned) | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also GWW’s full analysis or the market-wide insider trading feed. The tabs above jump to GWW’s other SEC data.
Source: SEC Form 4 filings for GWW, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.