Cole Martin I's Form 4 filing
Western Digital Corp (WDC) · filed Jul 29, 2026
- Accession no.
- 0001266824-26-000163
- Filed
- Jul 29, 2026, 7:31 PM ET
- Trade date
- Jul 28, 2026
- Filing delay
- 1 day
- Rule 10b5-1 plan
- Checked
This filing lists 30 non-derivative transactions. Open-market sales total $1.71M. It was filed 1 day after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Cole Martin ICIK 0001302874 | Director |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Jul 28, 2026 | Common Stock | SSaleDisposed | −64 | $424.05F2 | −$27,138.88 | 25,369 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −32 | $425.31F3 | −$13,609.92 | 25,337 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −64 | $426.45F4 | −$27,292.5 | 25,273 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −115 | $428.08F5 | −$49,229.63 | 25,158 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −93 | $429.12F6 | −$39,907.78 | 25,065 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −103 | $430.45F7 | −$44,336.03 | 24,962 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −115 | $431.41F8 | −$49,611.81 | 24,847 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −38 | $432.20F9 | −$16,423.78 | 24,809 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −112 | $433.84F10 | −$48,589.92 | 24,697 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −64 | $434.81F11 | −$27,827.52 | 24,633 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −32 | $435.59F12 | −$13,938.72 | 24,601 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −154 | $436.89F13 | −$67,281.58 | 24,447 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −118 | $438.08F14 | −$51,693.9 | 24,329 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −64 | $439.38F15 | −$28,120.32 | 24,265 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −96 | $440.96F16 | −$42,332.32 | 24,169 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −32 | $442.47F17 | −$14,159.04 | 24,137 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −32 | $444.51F18 | −$14,224.32 | 24,105 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −32 | $447.10F19 | −$14,307.04 | 24,073 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −41 | $448.46F20 | −$18,386.69 | 24,032 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −39 | $449.42F21 | −$17,527.41 | 23,993 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −70 | $451.30F22 | −$31,591.28 | 23,923 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −106 | $452.12F23 | −$47,925.06 | 23,817 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −144 | $453.27F24 | −$65,271.36 | 23,673 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −128 | $454.44F25 | −$58,168.64 | 23,545 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −304 | $455.55F26 | −$138,486.23 | 23,241 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −312 | $456.52F27 | −$142,433.05 | 22,929 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −328 | $457.45F28 | −$150,043.08 | 22,601 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −529 | $458.96F29 | −$242,787.83 | 22,072 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −248 | $459.97F30 | −$114,073.35 | 21,824 | Direct | |
| Jul 28, 2026 | Common Stock | SSaleDisposed | −199 | $461.23F31 | −$91,785.75 | 21,625 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F2
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $423.42 to a high of $424.39. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F3
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $425.15 to a high of $425.47. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F4
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $426.24 to a high of $426.98. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F5
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $427.48 to a high of $428.41. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F6
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $428.66 to a high of $429.49. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F7
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $429.79 to a high of $430.74. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F8
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $430.84 to a high of $431.80. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F9
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $432.06 to a high of $432.34. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F10
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $433.24 to a high of $434.16. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F11
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $434.41 to a high of $435.36. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F12
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $435.51 to a high of $435.66. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F13
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $436.54 to a high of $437.49. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F14
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $437.71 to a high of $438.68. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F15
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $439.12 to a high of $439.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F16
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $440.67 to a high of $441.46. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F17
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $442.06 to a high of $442.88. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F18
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $444.09 to a high of $444.93. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F19
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $446.73 to a high of $447.46. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F20
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $447.99 to a high of $448.97. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F21
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $448.99 to a high of $449.95. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F22
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $450.60 to a high of $451.56. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F23
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $451.61 to a high of $452.47. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F24
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $452.75 to a high of $453.69. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F25
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $453.92 to a high of $454.91. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F26
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $455.03 to a high of $456.02. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F27
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $456.05 to a high of $457.00. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F28
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $457.23 to a high of $457.87. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F29
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $458.37 to a high of $459.33. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F30
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $459.74 to a high of $460.53. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F31
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $460.94 to a high of $461.89. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.