Cynthia L. Tregillis, Chief Legal Officer and Corporate Secretary of Western Digital Corp. ($WDC), sold shares on the open market nine times over the past year, totaling about $6.1 million. Her most recent sale occurred on March 4, 2026. These sales rank her 1668th among 11,678 individual insiders by total value sold, below the average of $8.6 million per insider and 6.37 transactions. She made no open market purchases in the last 365 days.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 18, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | A | Dividend Equivalent Rights | 41 | $0.00 | 345.1200 | 381,000,000 | 13.37% | 0.00% |
| March 4, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | S | Common Stock | 777 | $257.91 | 130,229.0000 | 381,000,000 | 0.59% | 0.00% |
| March 3, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 2798 | $250.61 | 131,006.0000 | 381,000,000 | 2.09% | 0.00% |
| March 3, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 24 | $0.00 | 304.4130 | 381,000,000 | 7.26% | 0.00% |
| March 3, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 23 | $0.00 | 133,804.0000 | 381,000,000 | 0.02% | 0.00% |
| March 4, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | S | Common Stock | 8547 | $269.22 | 121,682.0000 | 381,000,000 | 6.56% | 0.00% |
| Feb. 25, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 6 | $0.00 | 134,765.0000 | 381,000,000 | 0.00% | 0.00% |
| Feb. 25, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 7 | $0.00 | 328.2263 | 381,000,000 | 1.96% | 0.00% |
| Feb. 26, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | S | Common Stock | 214 | $286.11 | 133,781.0000 | 381,000,000 | 0.16% | 0.00% |
| Feb. 25, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 770 | $290.95 | 133,995.0000 | 381,000,000 | 0.57% | 0.00% |
| Feb. 20, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 3 | $0.00 | 136,541.0000 | 381,000,000 | 0.00% | 0.00% |
| Feb. 21, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 9 | $0.00 | 334.7882 | 381,000,000 | 2.74% | 0.00% |
| Feb. 20, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 3 | $0.00 | 344.2281 | 381,000,000 | 0.93% | 0.00% |
| Feb. 24, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | S | Common Stock | 308 | $281.70 | 134,759.0000 | 381,000,000 | 0.23% | 0.00% |
| Feb. 23, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | S | Common Stock | 130 | $283.83 | 135,067.0000 | 381,000,000 | 0.10% | 0.00% |
| Feb. 21, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 1109 | $285.52 | 135,197.0000 | 381,000,000 | 0.81% | 0.00% |
| Feb. 21, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 9 | $0.00 | 136,306.0000 | 381,000,000 | 0.01% | 0.00% |
| Feb. 20, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 244 | $285.52 | 136,297.0000 | 381,000,000 | 0.18% | 0.00% |
| Feb. 6, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | S | Common Stock | 6780 | $270.49 | 136,538.0000 | 381,000,000 | 4.73% | 0.00% |
| Jan. 20, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 842 | $222.97 | 143,765.0000 | 381,000,000 | 0.58% | 0.00% |
| Jan. 20, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 11 | $0.00 | 347.4621 | 381,000,000 | 3.10% | 0.00% |
| Jan. 21, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | S | Common Stock | 447 | $229.00 | 143,318.0000 | 381,000,000 | 0.31% | 0.00% |
| Jan. 20, 2026 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 11 | $0.00 | 144,607.0000 | 381,000,000 | 0.01% | 0.00% |
| Dec. 18, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | A | Dividend Equivalent Rights | 82 | $0.00 | 358.5947 | 376,000,000 | 29.84% | 0.00% |
| Dec. 2, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | S | Common Stock | 2801 | $160.57 | 144,596.0000 | 376,000,000 | 1.90% | 0.00% |
| Nov. 25, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 770 | $155.41 | 147,332.0000 | 376,000,000 | 0.52% | 0.00% |
| Nov. 25, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 5 | $0.00 | 276.1717 | 376,000,000 | 1.83% | 0.00% |
| Nov. 25, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 5 | $0.00 | 148,102.0000 | 376,000,000 | 0.00% | 0.00% |
| Nov. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 2 | $0.00 | 149,577.0000 | 376,000,000 | 0.00% | 0.00% |
| Nov. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 379 | $140.23 | 149,198.0000 | 376,000,000 | 0.25% | 0.00% |
| Nov. 21, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 7 | $0.00 | 149,205.0000 | 376,000,000 | 0.00% | 0.00% |
| Nov. 21, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 1108 | $139.19 | 148,097.0000 | 376,000,000 | 0.74% | 0.00% |
| Nov. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 3 | $0.00 | 288.7586 | 376,000,000 | 0.87% | 0.00% |
| Nov. 21, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 7 | $0.00 | 281.3317 | 376,000,000 | 2.57% | 0.00% |
| Oct. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 1307 | $121.53 | 149,575.0000 | 376,000,000 | 0.87% | 0.00% |
| Oct. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 8 | $0.00 | 150,882.0000 | 376,000,000 | 0.01% | 0.00% |
| Oct. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 9 | $0.00 | 291.3030 | 376,000,000 | 2.92% | 0.00% |
| Sept. 18, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | A | Dividend Equivalent Rights | 118 | $0.00 | 300.0616 | 359,000,000 | 65.05% | 0.00% |
| Aug. 26, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | A | Common Stock | 16554 | $0.00 | 151,139.0000 | 359,000,000 | 12.30% | 0.00% |
| Aug. 27, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 1 | $0.00 | 181.8051 | 359,000,000 | 0.62% | 0.00% |
| Aug. 27, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 266 | $80.67 | 150,874.0000 | 359,000,000 | 0.18% | 0.00% |
| Aug. 27, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 1 | $0.00 | 151,140.0000 | 359,000,000 | 0.00% | 0.00% |
| Aug. 25, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 3 | $0.00 | 135,354.0000 | 359,000,000 | 0.00% | 0.00% |
| Aug. 25, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 3 | $0.00 | 182.9472 | 359,000,000 | 1.77% | 0.00% |
| Aug. 25, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 769 | $79.22 | 134,585.0000 | 359,000,000 | 0.57% | 0.00% |
| Aug. 21, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Common Stock | 18 | $0.00 | 153,846.0000 | 359,000,000 | 0.01% | 0.00% |
| Aug. 21, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | M | Dividend Equivalent Rights | 19 | $0.00 | 186.2484 | 359,000,000 | 9.25% | 0.00% |
| Aug. 22, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | S | Common Stock | 14067 | $74.78 | 135,351.0000 | 359,000,000 | 9.41% | 0.00% |
| Aug. 21, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | F | Common Stock | 4428 | $74.66 | 149,418.0000 | 359,000,000 | 2.88% | 0.00% |
| Aug. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | M | Dividend Equivalent Rights | 11 | $0.00 | 205.2347 | 359,000,000 | 5.09% | 0.00% |
| Aug. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | M | Common Stock | 10 | $0.00 | 156,393.0000 | 359,000,000 | 0.01% | 0.00% |
| Aug. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | F | Common Stock | 2565 | $75.64 | 153,828.0000 | 359,000,000 | 1.64% | 0.00% |
| July 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | M | Dividend Equivalent Rights | 6 | $0.00 | 216.2399 | 359,000,000 | 2.53% | 0.00% |
| July 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | M | Common Stock | 5 | $0.00 | 157,689.0000 | 359,000,000 | 0.00% | 0.00% |
| July 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | F | Common Stock | 1306 | $68.00 | 156,383.0000 | 359,000,000 | 0.83% | 0.00% |
| June 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | M | Common Stock | 0 | $0.00 | 157,888.0000 | 357,000,000 | 0.00% | 0.00% |
| June 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | M | Dividend Equivalent Rights | 1 | $0.00 | 221.8422 | 357,000,000 | 0.40% | 0.00% |
| June 18, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | A | Dividend Equivalent Rights | 223 | $0.00 | 222.7224 | 357,000,000 | 9999.99% | 0.00% |
| June 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | F | Common Stock | 204 | $59.29 | 157,684.0000 | 357,000,000 | 0.13% | 0.00% |
| May 25, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | F | Common Stock | 768 | $50.18 | 157,928.0000 | 357,000,000 | 0.48% | 0.00% |
| May 27, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | F | Common Stock | 267 | $51.82 | 157,661.0000 | 357,000,000 | 0.17% | 0.00% |
| May 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | F | Common Stock | 379 | $50.63 | 158,696.0000 | 357,000,000 | 0.24% | 0.00% |
| April 20, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | F | Common Stock | 1172 | $36.51 | 159,075.0000 | 357,000,000 | 0.73% | 0.00% |
| March 6, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | F | Common Stock | 875 | $41.45 | 160,247.0000 | 357,000,000 | 0.54% | 0.00% |
| March 3, 2025 | WESTERN DIGITAL CORP | $WDC | Tregillis Cynthia L | CLO and Corp. Sec. | A | Common Stock | 21272 | $0.00 | 161,122.0000 | 357,000,000 | 15.21% | 0.01% |