Necip Sayiner

Companies

• TeradyneBoard member Jul 3, 2025 to now¹
• SandiskBoard member Mar 3, 2025 to now²
• Axcelis TechnologiesBoard member Feb 28, 2024 to now³
• RambusBoard member Oct 28, 2019 to now⁴
• POWER INTEGRATIONS INCBoard member Apr 3, 2018 to May 30, 2023⁵
• Silicon LaboratoriesBoard member Sep 15, 2006 to Apr 20, 2012⁶
• Silicon LaboratoriesChief executive officer Sep 15, 2006 to Apr 20, 2012⁶
• Silicon LaboratoriesPresident Sep 15, 2006 to Apr 20, 2012⁶
• Silicon LaboratoriesChief financial officer Nov 16, 2006 to Nov 16, 2006⁷

Holdings

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

Shares held

• Rambus RMBS18,223 shares⁸$1.7M at $92.61Jun 3, 2026
• Teradyne TER2,800 shares⁹$953.0K at $340.36May 8, 2026
• Axcelis Technologies ACLS7,112 shares¹⁰$796.0K at $111.93Jun 3, 2026
• PIPOWER INTEGRATIONS INC POWI0 shares¹¹May 26, 2023

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

Recent filings

• Jun 3, 2026Sold 5,000 shares at $170.15 of Rambus⁸
• Jun 3, 2026Sold 1,586 shares at $157.44 of Axcelis Technologies¹⁰
• May 15, 2026Granted 1,440 shares of Axcelis Technologies¹²
• May 8, 2026Granted 668 shares of Teradyne⁹
• May 8, 2026Sold 9,824 shares at $130.18 of Rambus¹³
• May 8, 2026Sold 579 shares at $1,503.11 of CIK 2023554¹⁴
• Apr 1, 2026Granted 2,223 shares of Rambus¹⁵
• Dec 3, 2025Sold 1,271 shares at $195.14 of CIK 2023554¹⁶
• Nov 18, 2025Granted 979 shares of CIK 2023554¹⁷
• Sep 11, 2025Sold 7,500 shares at $85.63 of Rambus¹⁸
• Aug 8, 2025Sold 7,500 shares at $73.53 of Rambus¹⁹
• Jul 1, 2025Granted 2,132 shares of Teradyne²⁰
• May 15, 2025Granted 3,586 shares of Axcelis Technologies²¹
• Apr 1, 2025Granted 3,824 shares of Rambus²²
• Mar 3, 2025Granted 3,771 shares of CIK 2023554²³
• Feb 19, 2025Sold 4,625 shares at $66.74 of Rambus²⁴
• May 15, 2024Granted 1,662 shares of Axcelis Technologies²⁵
• May 15, 2024Granted 1,162 shares of Axcelis Technologies²⁶
• Apr 1, 2024Granted 2,972 shares of Rambus²⁷
• Mar 15, 2024Granted 1,340 shares of Axcelis Technologies²⁸
• Mar 15, 2024Granted 670 shares of Axcelis Technologies²⁸
• Nov 8, 2023Exercised options 15,000 shares at $13.94 of Rambus²⁹
• Nov 6, 2023Sold 10,000 shares at $57.43 of Rambus³⁰
• Nov 6, 2023Exercised options 10,000 shares at $13.94 of Rambus³⁰
• May 26, 2023Sold 4,500 shares at $89.95 of POWER INTEGRATIONS INC¹¹