Mark Spoto

Companies

• HawkEye 360, Inc.Board member May 6, 2026 to now¹
• 908 Devices Inc.Board member Dec 17, 2020 to now²

Holdings

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

Shares held

• H3HawkEye 360, Inc. HAWK966,238 shares³$12.5M at $12.89May 8, 2026
• 9D908 Devices Inc. MASS92,945 shares⁴$1.1M at $11.95Jun 12, 2026

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

Recent filings

• Jun 10, 2026Exercised options 14,083 shares of 908 Devices Inc.⁴
• May 8, 2026Returned to company 4,671 shares of HawkEye 360, Inc.³
• May 8, 2026Exercised options 10,867 shares of HawkEye 360, Inc.³
• May 8, 2026Converted 789,044 shares of HawkEye 360, Inc.³
• May 8, 2026Converted 1,389,294 shares of HawkEye 360, Inc.³
• May 8, 2026Converted 2,279,591 shares of HawkEye 360, Inc.³
• Dec 30, 2025Gift 928 shares of 908 Devices Inc.⁵
• Dec 30, 2025Gift 928 shares of 908 Devices Inc.⁵
• Oct 14, 2025Inherited 928 shares of 908 Devices Inc.⁵
• Jun 11, 2025Exercised options 11,364 shares of 908 Devices Inc.⁶
• May 14, 2025Bought 3,000 shares at $4.25 of 908 Devices Inc.⁷
• May 14, 2025Bought 7,000 shares at $4.30 of 908 Devices Inc.⁷
• Jun 12, 2024Exercised options 7,777 shares of 908 Devices Inc.⁸
• Jun 14, 2023Exercised options 4,771 shares of 908 Devices Inc.⁹
• Nov 22, 2022Bought 2,585 shares at $9.65 of 908 Devices Inc.¹⁰
• Jun 15, 2022Exercised options 1,379 shares of 908 Devices Inc.¹¹