Nikos Theodosopoulos

Companies

• Hercules Capital, Inc.Board member Sep 25, 2023 to now¹
• AdtranBoard member Jul 18, 2022 to now²
• Arista NetworksBoard member Jun 5, 2014 to May 24, 2023³
• Harmonic Inc.Board member Mar 17, 2015 to Aug 16, 2022⁴

Holdings

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

Shares held

• Arista Networks ANET26,002 shares⁵$4.6M at $176.99May 22, 2023
• Harmonic Inc. HLIT189,956 shares⁶$2.1M at $10.82Aug 12, 2022
• HCHercules Capital, Inc. HTGC29,362 shares⁷$471.1K at $16.05Mar 26, 2026
• Adtran ADTN65,963 shares⁸$425.8K at $6.46Dec 31, 2025

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

Recent filings

• Mar 26, 2026Bought 7,317 shares at $14.35 of Hercules Capital, Inc.⁷
• Feb 27, 2026Bought 2,600 shares at $14.21 of Hercules Capital, Inc.⁹
• Feb 17, 2026Bought 6,165 shares at $15.93 of Hercules Capital, Inc.¹⁰
• Dec 31, 2025Granted 13,809 shares of Adtran⁸
• Nov 26, 2025Bought 12,859 shares at $7.81 of Adtran¹¹
• May 8, 2025Bought 5,999 shares at $17.49 of Hercules Capital, Inc.¹²
• Dec 31, 2024Granted 14,406 shares of Adtran¹³
• Aug 6, 2024Bought 1,608 shares at $18.03 of Hercules Capital, Inc.¹⁴
• Jun 20, 2024Granted 3,030 shares at $19.80 of Hercules Capital, Inc.¹⁵
• Dec 31, 2023Granted 16,349 shares of Adtran¹⁶
• Dec 31, 2023Returned to company 0 shares at $7.34 of Adtran¹⁶
• Dec 31, 2023Exercised options 168 shares of Adtran¹⁶
• Nov 22, 2023Granted 28 shares at $15.87 of Hercules Capital, Inc.¹⁷
• Sep 21, 2023Granted 923 shares at $16.24 of Hercules Capital, Inc.¹⁸
• Aug 9, 2023Returned to company 1 shares of Adtran¹⁹
• Aug 9, 2023Exercised options 46 shares of Adtran¹⁹
• May 22, 2023Exercised options 510 shares of Arista Networks⁵
• Feb 21, 2023Exercised options 511 shares of Arista Networks²⁰
• Jan 24, 2023Granted 1,629 shares of Adtran²¹
• Dec 31, 2022Granted 4,790 shares of Adtran²²
• Nov 21, 2022Exercised options 510 shares of Arista Networks²³
• Sep 1, 2022Granted 8 shares at $22.70 of Adtran²⁴
• Aug 22, 2022Exercised options 511 shares of Arista Networks²⁵
• Aug 12, 2022Exercised options 7,054 shares of Harmonic Inc.⁶
• Aug 9, 2022Granted 1,908 shares of Adtran²⁶