Gene M. Zamiska, SVP and Principal Accounting Officer at Western Digital Corp ($WDC), made six open market sales of $WDC stock in the last year, totaling $578,000. The latest sale occurred on August 28, 2025. These transactions rank 6,143rd among 11,678 insiders by sale value, well below the $8.6 million average. Zamiska recorded no open market purchases.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 18, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | A | Dividend Equivalent Rights | 26 | $0.00 | 72.4915 | 359,000,000 | 56.35% | 0.00% |
| Aug. 27, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | M | Dividend Equivalent Rights | 1 | $0.00 | 46.3648 | 359,000,000 | 2.48% | 0.00% |
| Aug. 27, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | M | Common Stock | 1 | $0.00 | 28,123.0000 | 359,000,000 | 0.00% | 0.00% |
| Aug. 27, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 345 | $80.67 | 27,778.0000 | 359,000,000 | 1.23% | 0.00% |
| Aug. 28, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 353 | $80.90 | 27,425.0000 | 359,000,000 | 1.27% | 0.00% |
| Aug. 26, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 814 | $79.10 | 28,122.0000 | 359,000,000 | 2.81% | 0.00% |
| Aug. 25, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | M | Common Stock | 2 | $0.00 | 29,734.0000 | 359,000,000 | 0.01% | 0.00% |
| Aug. 25, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 798 | $79.22 | 28,936.0000 | 359,000,000 | 2.68% | 0.00% |
| Aug. 25, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | M | Dividend Equivalent Rights | 3 | $0.00 | 47.5424 | 359,000,000 | 5.41% | 0.00% |
| Aug. 22, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP, Global Accounting & Chief | S | Common Stock | 1828 | $74.78 | 29,732.0000 | 359,000,000 | 5.79% | 0.00% |
| Aug. 21, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP, Global Accounting & Chief | M | Common Stock | 6 | $0.00 | 36,517.0000 | 359,000,000 | 0.02% | 0.00% |
| Aug. 21, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP, Global Accounting & Chief | F | Common Stock | 1797 | $74.66 | 34,720.0000 | 359,000,000 | 4.92% | 0.00% |
| Aug. 21, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP, Global Accounting & Chief | S | Common Stock | 3160 | $75.68 | 31,560.0000 | 359,000,000 | 9.10% | 0.00% |
| Aug. 21, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP, Global Accounting & Chief | M | Dividend Equivalent Rights | 6 | $0.00 | 50.2625 | 359,000,000 | 10.85% | 0.00% |
| Aug. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | M | Dividend Equivalent Rights | 11 | $0.00 | 56.3767 | 359,000,000 | 15.78% | 0.00% |
| Aug. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | M | Common Stock | 9 | $0.00 | 39,613.0000 | 359,000,000 | 0.02% | 0.00% |
| Aug. 20, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 3102 | $75.64 | 36,511.0000 | 359,000,000 | 7.83% | 0.00% |
| June 18, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | A | Dividend Equivalent Rights | 67 | $0.00 | 66.9410 | 357,000,000 | 9999.99% | 0.00% |
| June 17, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 245 | $58.01 | 39,604.0000 | 357,000,000 | 0.61% | 0.00% |
| June 14, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 240 | $55.70 | 39,849.0000 | 357,000,000 | 0.60% | 0.00% |
| June 5, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 1729 | $54.88 | 40,089.0000 | 357,000,000 | 4.13% | 0.00% |
| May 25, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 797 | $50.18 | 42,163.0000 | 357,000,000 | 1.86% | 0.00% |
| May 27, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 345 | $51.82 | 41,818.0000 | 357,000,000 | 0.82% | 0.00% |
| May 20, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 360 | $50.63 | 42,960.0000 | 357,000,000 | 0.83% | 0.00% |
| March 12, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 456 | $43.37 | 43,320.0000 | 357,000,000 | 1.04% | 0.00% |
| March 6, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 1116 | $41.45 | 45,435.0000 | 357,000,000 | 2.40% | 0.00% |
| March 7, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 1659 | $41.36 | 43,776.0000 | 357,000,000 | 3.65% | 0.00% |
| Feb. 28, 2025 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | A | Common Stock | 5327 | $0.00 | 46,551.0000 | 357,000,000 | 12.92% | 0.00% |
| Nov. 27, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 167 | $71.50 | 28,696.0000 | 357,000,000 | 0.58% | 0.00% |
| Nov. 29, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 313 | $72.63 | 28,383.0000 | 357,000,000 | 1.09% | 0.00% |
| Nov. 25, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 450 | $69.43 | 29,521.0000 | 357,000,000 | 1.50% | 0.00% |
| Nov. 26, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 658 | $69.99 | 28,863.0000 | 357,000,000 | 2.23% | 0.00% |
| Nov. 20, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 261 | $63.84 | 30,347.0000 | 357,000,000 | 0.85% | 0.00% |
| Nov. 21, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 376 | $64.47 | 29,971.0000 | 357,000,000 | 1.24% | 0.00% |
| Oct. 28, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 1993 | $69.94 | 30,608.0000 | 357,000,000 | 6.11% | 0.00% |
| Sept. 3, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 1145 | $63.06 | 34,770.0000 | 326,000,000 | 3.19% | 0.00% |
| Sept. 4, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 2169 | $61.96 | 32,601.0000 | 326,000,000 | 6.24% | 0.00% |
| Aug. 29, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 315 | $63.32 | 35,915.0000 | 326,000,000 | 0.87% | 0.00% |
| Aug. 25, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 1532 | $64.35 | 40,348.0000 | 326,000,000 | 3.66% | 0.00% |
| Aug. 27, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 1218 | $62.85 | 36,230.0000 | 326,000,000 | 3.25% | 0.00% |
| Aug. 27, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 2900 | $61.48 | 37,448.0000 | 326,000,000 | 7.19% | 0.00% |
| Aug. 20, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 220 | $64.42 | 29,287.0000 | 326,000,000 | 0.75% | 0.00% |
| Aug. 21, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 417 | $64.89 | 28,870.0000 | 326,000,000 | 1.42% | 0.00% |
| Aug. 21, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | A | Common Stock | 9964 | $0.00 | 38,834.0000 | 326,000,000 | 34.51% | 0.00% |
| Aug. 21, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | A | Common Stock | 3046 | $0.00 | 41,880.0000 | 326,000,000 | 7.84% | 0.00% |
| June 17, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP, Global Accounting & Chief | S | Common Stock | 219 | $78.00 | 29,507.0000 | 318,000,000 | 0.74% | 0.00% |
| June 14, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 115 | $78.12 | 29,726.0000 | 318,000,000 | 0.39% | 0.00% |
| May 29, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 315 | $75.39 | 29,841.0000 | 318,000,000 | 1.04% | 0.00% |
| May 27, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 165 | $74.81 | 30,156.0000 | 318,000,000 | 0.54% | 0.00% |
| May 21, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 416 | $71.88 | 30,321.0000 | 318,000,000 | 1.35% | 0.00% |
| May 20, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 221 | $73.05 | 30,737.0000 | 318,000,000 | 0.71% | 0.00% |
| April 8, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 443 | $75.00 | 30,958.0000 | 318,000,000 | 1.41% | 0.00% |
| March 1, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 7677 | $61.00 | 34,492.0000 | 318,000,000 | 18.21% | 0.00% |
| March 1, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 2807 | $62.00 | 31,685.0000 | 318,000,000 | 8.14% | 0.00% |
| March 1, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 284 | $63.00 | 31,401.0000 | 318,000,000 | 0.90% | 0.00% |
| Feb. 27, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 196 | $57.48 | 42,169.0000 | 318,000,000 | 0.46% | 0.00% |
| Feb. 20, 2024 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 261 | $54.13 | 42,365.0000 | 318,000,000 | 0.61% | 0.00% |
| Nov. 27, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 165 | $47.21 | 42,626.0000 | 318,000,000 | 0.39% | 0.00% |
| Nov. 20, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 220 | $47.35 | 42,791.0000 | 318,000,000 | 0.51% | 0.00% |
| Sept. 6, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | S | Common Stock | 2169 | $45.42 | 43,011.0000 | 318,000,000 | 4.80% | 0.00% |
| Sept. 4, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 1146 | $45.96 | 45,180.0000 | 318,000,000 | 2.47% | 0.00% |
| Aug. 25, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | A | Common Stock | 17726 | $0.00 | 46,491.0000 | 318,000,000 | 61.62% | 0.01% |
| Aug. 27, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 165 | $39.49 | 46,326.0000 | 318,000,000 | 0.35% | 0.00% |
| Aug. 20, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 881 | $39.74 | 28,765.0000 | 318,000,000 | 2.97% | 0.00% |
| Aug. 12, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | M | Common Stock | 107 | $0.00 | 31,022.0000 | 318,000,000 | 0.35% | 0.00% |
| Aug. 12, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 1376 | $41.88 | 29,646.0000 | 318,000,000 | 4.44% | 0.00% |
| Aug. 12, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | M | Dividend Equivalent Rights | 108 | $0.00 | 0.0000 | 318,000,000 | 100.00% | 0.00% |
| June 14, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 115 | $40.46 | 30,915.0000 | 0 | 0.37% | 0.00% |
| May 27, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 162 | $39.71 | 31,030.0000 | 0 | 0.52% | 0.00% |
| Feb. 27, 2023 | WESTERN DIGITAL CORP | $WDC | Zamiska Gene M. | SVP & Princ. Acctg Officer | F | Common Stock | 196 | $38.51 | 31,192.0000 | 0 | 0.62% | 0.00% |