Matthew E. Massengill

Companies

• Western DigitalBoard member Jan 4, 2007 to now¹
• SandiskBoard member Jan 31, 2025 to Mar 4, 2025²
• Western DigitalChair Feb 1, 2006 to Jun 23, 2006³

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Western Digital WDC29,397 shares⁴$9.8M at $332.54Feb 6, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Feb 5, 2026Sold 400 shares at $268.06 of Western Digital⁴
• Feb 5, 2026Sold 916 shares at $265.92 of Western Digital⁴
• Feb 5, 2026Sold 2,200 shares at $264.99 of Western Digital⁴
• Feb 5, 2026Sold 2,600 shares at $264.01 of Western Digital⁴
• Feb 5, 2026Sold 2,300 shares at $262.77 of Western Digital⁴
• Feb 5, 2026Sold 3,597 shares at $261.71 of Western Digital⁴
• Feb 5, 2026Sold 5,987 shares at $260.57 of Western Digital⁴
• Feb 5, 2026Sold 4,915 shares at $259.59 of Western Digital⁴
• Feb 5, 2026Sold 7,000 shares at $258.67 of Western Digital⁴
• Feb 5, 2026Sold 4,411 shares at $257.69 of Western Digital⁴
• Feb 5, 2026Sold 2,600 shares at $256.63 of Western Digital⁴
• Nov 20, 2025Granted 1,585 shares of Western Digital⁵
• Mar 3, 2025Granted 4,840 shares of CIK 2023554⁶
• Nov 20, 2024Granted 4,542 shares of Western Digital⁷
• Nov 15, 2023Granted 6,300 shares of Western Digital⁸
• Nov 16, 2022Granted 7,962 shares of Western Digital⁹
• Nov 16, 2021Granted 4,958 shares of Western Digital¹⁰