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| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Jul 21 '26 | Sale | 529.63 | 808 | 427,941 | 114,539 | Jul 21 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Jul 20 '26 | Option Exercise | 0.00 | 13 | 0 | 116,656 | Jul 21 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Jun 05 '26 | Sale | 545.60 | 432 | 235,699 | 116,643 | Jun 05 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Jun 03 '26 | Option Exercise | 0.00 | 13 | 0 | 117,774 | Jun 05 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | May 27 '26 | Sale | 539.63 | 214 | 115,481 | 117,157 | May 27 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | May 25 '26 | Option Exercise | 0.00 | 7 | 0 | 118,142 | May 27 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | May 22 '26 | Sale | 488.61 | 308 | 150,492 | 118,135 | May 27 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | May 21 '26 | Option Exercise | 0.00 | 21 | 0 | 119,657 | May 22 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | May 21 '26 | Sale | 458.87 | 106 | 48,640 | 118,443 | May 22 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | May 20 '26 | Option Exercise | 0.00 | 7 | 0 | 120,026 | May 22 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Apr 21 '26 | Sale | 377.09 | 363 | 136,884 | 120,023 | Apr 22 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Apr 20 '26 | Option Exercise | 0.00 | 12 | 0 | 121,694 | Apr 22 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Mar 04 '26 | Sale | 268.27 | 9,324 | 2,501,382 | 121,682 | Mar 05 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Mar 03 '26 | Option Exercise | 0.00 | 47 | 0 | 133,804 | Mar 05 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Feb 26 '26 | Sale | 286.11 | 214 | 61,228 | 133,781 | Feb 27 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Feb 25 '26 | Option Exercise | 0.00 | 13 | 0 | 134,765 | Feb 27 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Feb 24 '26 | Sale | 281.70 | 308 | 86,764 | 134,759 | Feb 24 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Feb 23 '26 | Sale | 283.83 | 130 | 36,898 | 135,067 | Feb 24 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Feb 21 '26 | Option Exercise | 0.00 | 9 | 0 | 136,306 | Feb 24 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Feb 20 '26 | Option Exercise | 0.00 | 3 | 0 | 136,541 | Feb 24 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Feb 06 '26 | Sale | 270.49 | 6,780 | 1,833,922 | 136,538 | Feb 06 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Jan 21 '26 | Sale | 229.00 | 447 | 102,363 | 143,318 | Jan 21 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Jan 20 '26 | Option Exercise | 0.00 | 11 | 0 | 144,607 | Jan 21 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Dec 02 '25 | Sale | 160.57 | 2,801 | 449,752 | 144,596 | Dec 03 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Nov 25 '25 | Option Exercise | 0.00 | 5 | 0 | 148,102 | Nov 26 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Nov 21 '25 | Option Exercise | 0.00 | 7 | 0 | 149,205 | Nov 24 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Nov 20 '25 | Option Exercise | 0.00 | 5 | 0 | 149,577 | Nov 24 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Oct 20 '25 | Option Exercise | 0.00 | 17 | 0 | 150,882 | Oct 21 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Aug 27 '25 | Option Exercise | 0.00 | 1 | 0 | 151,140 | Aug 28 |
| WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Aug 25 '25 | Option Exercise | 0.00 | 3 | 0 | 135,354 | Aug 27 |