William P. Noglows

Companies

• ASPEN AEROGELS INCBoard member Jun 20, 2014 to now¹
• LittelfuseBoard member Feb 6, 2007 to now²
• CMC Materials, Inc.Board member Aug 2, 2016 to Jul 7, 2022³
• CMC Materials, Inc.Chair Jan 3, 2006 to Mar 9, 2016⁴
• CMC Materials, Inc.Chief executive officer Jan 3, 2006 to Jan 4, 2016⁴
• CMC Materials, Inc.President Jan 3, 2006 to Jan 4, 2016⁴

Holdings

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

Shares held

• Littelfuse LFUS24,687 shares⁵$9.5M at $384.26Sep 8, 2026
• AAASPEN AEROGELS INC ASPN124,156 shares⁶$653.1K at $5.26Jun 26, 2026
• CMCMC Materials, Inc.0 shares⁷Jul 6, 2022

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

Recent filings

• Sep 3, 2026Granted 1 shares at $414.24 of Littelfuse⁵
• Sep 3, 2026Granted 6 shares at $414.24 of Littelfuse⁵
• Jun 23, 2026Exercised options 14,799 shares at $4.75 of ASPEN AEROGELS INC⁶
• Jun 4, 2026Granted 3 shares at $480.24 of Littelfuse⁸
• Jun 4, 2026Granted 3 shares at $480.24 of Littelfuse⁸
• May 13, 2026Granted 10,370 shares of ASPEN AEROGELS INC⁹
• Apr 22, 2026Granted 482 shares of Littelfuse¹⁰
• Mar 5, 2026Granted 2 shares at $323.58 of Littelfuse¹¹
• Mar 5, 2026Granted 7 shares at $323.58 of Littelfuse¹¹
• Feb 4, 2026Exercised options 911 shares at $199.24 of Littelfuse¹²
• Dec 5, 2025Granted 8 shares at $258.99 of Littelfuse¹³
• Dec 5, 2025Granted 3 shares at $258.99 of Littelfuse¹³
• Sep 5, 2025Granted 3 shares at $259.58 of Littelfuse¹⁴
• Sep 5, 2025Granted 8 shares at $259.58 of Littelfuse¹⁴
• Jun 5, 2025Granted 9 shares at $214.18 of Littelfuse¹⁵
• Jun 5, 2025Granted 3 shares at $214.18 of Littelfuse¹⁵
• Apr 30, 2025Granted 10,370 shares of ASPEN AEROGELS INC¹⁶
• Apr 24, 2025Granted 1,019 shares of Littelfuse¹⁷
• Mar 7, 2025Other 7 shares at $218.33 of Littelfuse¹⁸
• Feb 4, 2025Exercised options 800 shares at $192.59 of Littelfuse¹⁹
• Dec 6, 2024Other 8 shares at $247.32 of Littelfuse²⁰
• Sep 6, 2024Other 7 shares at $256.00 of Littelfuse²¹
• Jun 7, 2024Other 5 shares at $250.13 of Littelfuse²²
• May 30, 2024Granted of ASPEN AEROGELS INC²³
• May 30, 2024Granted of ASPEN AEROGELS INC²³