Charles Thomas McMillen

Companies

• ScanTech AI Systems Inc.Board member Jan 29, 2025 to now¹
• Castellum, Inc.Board member Oct 12, 2022 to now²
• Nexstar Media GroupBoard member Jul 24, 2014 to now³
• FingerMotion, Inc.Board member Apr 24, 2017 to Apr 24, 2017⁴

Holdings

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

Shares held

• Nexstar Media Group NXST5,658 shares⁵$938.0K at $165.78Jun 9, 2026
• CCastellum, Inc. CTM231,015 shares⁶$131.3K at $0.57Mar 25, 2026

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

Recent filings

• Jun 9, 2026Sold 1,000 shares at $180.00 of Nexstar Media Group⁵
• Mar 25, 2026Sold 30,000 shares at $0.70 of Castellum, Inc.⁶
• Mar 24, 2026Exercised options 1,123 shares of Nexstar Media Group⁷
• Mar 18, 2026Sold 55,000 shares at $0.80 of Castellum, Inc.⁸
• Aug 21, 2025Exercised options 125,000 shares at $0.21 of Castellum, Inc.⁹
• Mar 20, 2025Exercised options 1,560 shares of Nexstar Media Group¹⁰
• Mar 5, 2025Sold 2,000 shares at $169.51 of Nexstar Media Group¹¹
• Jan 2, 2025Exercised options 100,028 shares at $0.21 of Castellum, Inc.¹²
• Dec 26, 2024Sold 750 shares at $159.93 of Nexstar Media Group¹³
• Sep 26, 2024Sold 250 shares at $164.44 of Nexstar Media Group¹⁴
• Sep 10, 2024Sold 1,000 shares at $160.00 of Nexstar Media Group¹⁵
• Jun 13, 2024Sold 1,475 shares at $154.99 of Nexstar Media Group¹⁶
• Jun 13, 2024Exercised options 2,500 shares at $52.54 of Nexstar Media Group¹⁶
• Jun 9, 2024Exercised options 750 shares at $153.82 of Nexstar Media Group¹⁷
• Jun 5, 2024Sold 1,475 shares at $156.87 of Nexstar Media Group¹⁸
• Jun 5, 2024Exercised options 2,500 shares at $52.54 of Nexstar Media Group¹⁸
• May 21, 2024Sold 1,475 shares at $166.08 of Nexstar Media Group¹⁹
• May 21, 2024Exercised options 2,500 shares at $52.54 of Nexstar Media Group¹⁹
• Apr 10, 2024Exercised options 625 shares at $162.95 of Nexstar Media Group²⁰
• Mar 13, 2024Sold 1,475 shares at $166.00 of Nexstar Media Group²¹
• Mar 13, 2024Exercised options 2,500 shares at $52.54 of Nexstar Media Group²¹
• Dec 22, 2023Sold 1,000 shares at $158.95 of Nexstar Media Group²²
• Nov 21, 2023Sold 500 shares at $149.57 of Nexstar Media Group²³
• Jun 8, 2023Sold 1,250 shares at $164.58 of Nexstar Media Group²⁴
• Jun 3, 2023Exercised options 750 shares at $156.77 of Nexstar Media Group²⁵