William C. Martin

Companies

• Barnes & Noble College BooksellersBoard member Jun 12, 2024 to now¹
• Immersion CorporationChief Strategy Officer Apr 5, 2022 to now²
• Immersion CorporationBoard member Aug 13, 2019 to now³
• TidewaterBoard member Nov 19, 2018 to Nov 19, 2018⁴
• SMG Industries Inc.Board member May 12, 2011 to Dec 10, 2014⁵
• BankrateBoard member Feb 9, 2006 to Sep 1, 2009⁶

Holdings

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

Shares held

• Tidewater TDW2,413,438 shares⁷$191.1M at $79.18Nov 15, 2018
• Barnes & Noble College Booksellers BNED11,396,137 shares⁸$147.6M at $12.95Sep 29, 2026
• Immersion Corporation IMMR1,423,164 shares⁹$10.2M at $7.14Jul 31, 2026

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

Recent filings

• Sep 25, 2026Granted 17,653 shares of Barnes & Noble College Booksellers⁸
• Sep 11, 2026Sold 105,541 shares at $4.63 of UNIVERSAL ELECTRONICS INC¹⁰
• Sep 10, 2026Sold 24,459 shares at $4.66 of UNIVERSAL ELECTRONICS INC¹⁰
• Aug 10, 2026Sold 200,000 shares at $5.22 of UNIVERSAL ELECTRONICS INC¹¹
• Jul 31, 2026Granted 5,640 shares of Immersion Corporation⁹
• Apr 30, 2026Granted 17,872 shares of Immersion Corporation¹²
• Apr 30, 2026Granted 7,425 shares of Immersion Corporation¹²
• Mar 11, 2026Granted 23,867 shares of Barnes & Noble College Booksellers¹³
• Jan 30, 2026Granted 6,588 shares of Immersion Corporation¹⁴
• Nov 14, 2025Granted 17,647 shares of Immersion Corporation¹⁵
• Oct 31, 2025Granted 7,952 shares of Immersion Corporation¹⁶
• Jul 31, 2025Granted 7,140 shares of Immersion Corporation¹⁷
• Jul 1, 2025Shares withheld for tax 68,400 shares at $7.91 of Immersion Corporation¹⁸
• May 2, 2025Granted 10,239 shares of Immersion Corporation¹⁹
• Apr 30, 2025Granted 5,968 shares of Immersion Corporation²⁰
• Apr 1, 2025Shares withheld for tax 45,600 shares at $7.74 of Immersion Corporation²¹
• Mar 20, 2025Bought 27,150 shares at $7.55 of Immersion Corporation²²
• Jan 31, 2025Granted 86,899 shares of Immersion Corporation²²
• Jan 1, 2025Shares withheld for tax 7,692 shares at $8.73 of Immersion Corporation²³
• Jan 1, 2025Shares withheld for tax 8,799 shares at $8.73 of Immersion Corporation²³
• Oct 31, 2024Granted 6,672 shares of Immersion Corporation²⁴
• Oct 1, 2024Shares withheld for tax 11,401 shares at $8.69 of Immersion Corporation²⁵
• Oct 1, 2024Shares withheld for tax 11,401 shares at $8.69 of Immersion Corporation²⁵
• Sep 20, 2024Granted 20,430 shares of Barnes & Noble College Booksellers²⁶
• Aug 28, 2024Bought 5,000 shares at $8.61 of Immersion Corporation²⁷