W.W. Grainger, Inc. (GWW) has 20 known insider and institutional holders on record. The largest holder is Macpherson Donald G with 106,832 shares. Other notable holders include NOVICH NEIL S and ROBERTS MICHAEL JAMES.
Over the last 12 months, insiders have made 78 transactions in GWW stock — 49 buys (valued at RSU Award) and 4 sells (valued at $644.94K). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
GWW Insider Ownership
Top Holder
Macpherson Donald G
106,832 shares
Buys (12 mo)
49
$0.00 value
Sells (12 mo)
4
$644.94K value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Macpherson Donald G |
Chairman and CEO |
106,832 |
2026-04-02 |
|
| 2 |
Novich Neil S |
Director |
33,289 |
2026-03-03 |
|
| 3 |
Roberts Michael James |
Director |
25,918 |
2023-03-02 |
|
| 4 |
Levenick Stuart L |
Director |
22,390 |
2025-03-04 |
|
| 5 |
Slavik James D |
Director |
22,341 |
2020-03-03 |
|
| 6 |
Howard John L |
Sr. VP and General Counsel |
20,567 |
2022-04-04 |
|
| 7 |
Anderson Brian P |
Director |
20,478 |
2022-03-02 |
|
| 8 |
Hailey V Ann |
Director |
15,116 |
2024-03-05 |
|
| 9 |
Merriwether Deidra C |
Sr. VP & CFO |
10,993 |
2026-04-02 |
|
| 10 |
Santi Ernest Scott |
Director |
10,436 |
2026-03-03 |
|
| 11 |
Okray Thomas B |
SVP & Chief Financial Officer |
6,231 |
2020-09-11 |
|
| 12 |
Adkins Rodney C |
Director |
5,975 |
2026-03-03 |
|
| 13 |
Watson Lucas E |
Director |
5,711 |
2026-03-03 |
|
| 14 |
Perez Beatriz R |
Director |
5,099 |
2026-03-03 |
|
| 15 |
Okeef Robert F |
Interim CFO |
3,787 |
2021-01-05 |
|
| 16 |
Carroll Kathleen S |
SVP & Chief HR Officer |
3,751 |
2023-04-04 |
|
| 17 |
Tinto Melanie J |
SVP & Chief HR Officer |
3,645 |
2026-04-02 |
|
| 18 |
Berardinelli Krantz Nancy L |
Sr. VP & CLO |
3,277 |
2026-04-02 |
|
| 19 |
Robbins Paige K |
Sr. VP |
3,095 |
2026-04-02 |
|
| 20 |
Tapia Eric R |
Vice President & Controller |
2,872 |
2021-04-05 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-04-01 |
Leroy Jonny M |
SVP, Chief Technology Officer |
Tax Withholding of RSU |
148 |
$1,090.81 |
$161.44K |
| 2026-04-01 |
Berardinelli Krantz Nancy L |
Sr. VP & CLO |
Tax Withholding of RSU |
383 |
$1,090.81 |
$417.78K |
| 2026-04-01 |
Thomson Laurie R |
VP, Controller |
Tax Withholding of RSU |
44 |
$1,090.81 |
$48K |
| 2026-04-02 |
Merriwether Deidra C |
Sr. VP & CFO |
Informative Sell |
40 |
$1,122.39 |
$44.9K |
| 2026-04-01 |
Merriwether Deidra C |
Sr. VP & CFO |
Tax Withholding of RSU |
569 |
$1,090.81 |
$620.67K |
| 2026-04-01 |
Tinto Melanie J |
SVP & Chief HR Officer |
RSU Award |
764 |
- |
- |
| 2026-04-01 |
Robbins Paige K |
Sr. VP |
Tax Withholding of RSU |
547 |
$1,090.81 |
$596.67K |
| 2026-04-01 |
Macpherson Donald G |
Chairman and CEO |
Tax Withholding of RSU |
2,345 |
$1,090.81 |
$2.56M |
| 2026-03-24 |
Merriwether Deidra C |
Sr. VP & CFO |
Option Exercise (Sell) |
2,339 |
$311.26 |
$728.04K |
| 2026-03-01 |
Miller Cindy J |
Director |
RSU Award |
1 |
- |
- |
| 2026-03-01 |
Williams Susan Slavik |
Director |
RSU Award |
5 |
- |
- |
| 2026-03-01 |
Watson Lucas E |
Director |
RSU Award |
11 |
- |
- |
| 2026-03-01 |
Jaspon Katherine D. |
Director |
Gift (Given) |
4 |
- |
- |
| 2026-03-01 |
White Steven Andrew |
Director |
Gift (Given) |
5 |
- |
- |
| 2026-03-01 |
Perez Beatriz R |
Director |
RSU Award |
10 |
- |
- |
| 2026-03-01 |
Adkins Rodney C |
Director |
RSU Award |
12 |
- |
- |
| 2026-03-01 |
Davis George S |
Director |
RSU Award |
2 |
- |
- |
| 2026-03-01 |
Santi Ernest Scott |
Director |
RSU Award |
21 |
- |
- |
| 2026-03-01 |
Klein Christopher J |
Director |
RSU Award |
- |
- |
- |
| 2026-03-01 |
Novich Neil S |
Director |
RSU Award |
66 |
- |
- |
| 2026-02-01 |
Berardinelli Krantz Nancy L |
Sr. VP & CLO |
Tax Withholding of RSU |
189 |
$1,079.94 |
$204.11K |
| 2025-02-01 |
Berardinelli Krantz Nancy L |
Sr. VP & CLO |
Tax Withholding of RSU |
188 |
$1,062.67 |
$199.78K |
| 2025-12-16 |
Berardinelli Krantz Nancy L |
Sr. VP & CLO |
Informative Sell |
195 |
$1,023.93 |
$199.67K |
| 2025-12-05 |
Macpherson Donald G |
Chairman and CEO |
Option Exercise (Sell) |
12,163 |
$311.26 |
$3.79M |
| 2025-12-04 |
Macpherson Donald G |
Chairman and CEO |
Option Exercise (Sell) |
8,000 |
$311.26 |
$2.49M |
