Ryan Polk

Companies

• SideChannel, Inc.Board member Mar 5, 2025 to now¹
• SideChannel, Inc.Chief financial officer Dec 15, 2021 to now²
• Astrotech CorporationChief financial officer Jan 24, 2025 to Jan 24, 2025³

Holdings

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

Shares held

• SSideChannel, Inc. SDCH46,372 shares⁴$56.6K at $1.22Mar 18, 2026
• Astrotech Corporation ASTC0 shares⁵Jan 24, 2025

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

Recent filings

• Mar 16, 2026Granted 35,574 shares at $2.01 of SideChannel, Inc.⁴
• Mar 2, 2026Shares withheld for tax 25,745 shares at $2.20 of SideChannel, Inc.⁴
• Mar 3, 2025Shares withheld for tax 408,913 shares at $0.04 of SideChannel, Inc.⁶
• Mar 3, 2025Granted 1,807,803 shares at $0.18 of SideChannel, Inc.⁶
• May 24, 2024Granted 286,902 shares at $0.06 of SideChannel, Inc.⁷
• Mar 1, 2024Shares withheld for tax 212,490 shares at $0.05 of SideChannel, Inc.⁸
• Mar 1, 2024Granted 1,708,434 shares at $0.05 of SideChannel, Inc.⁸
• Jun 26, 2023Granted 500,000 shares at $0.30 of SideChannel, Inc.⁹
• Jun 30, 2022Granted 500,000 shares at $0.18 of SideChannel, Inc.¹⁰
• Jun 20, 2022Granted 277,778 shares at $0.18 of SideChannel, Inc.¹¹
• Oct 25, 2021Granted 277,778 shares at $0.18 of SideChannel, Inc.¹²