Heather Kiessling

Companies

• ASP Isotopes Inc.Chief financial officer Jul 1, 2024 to now¹

Holdings

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

Shares held

• AIASP Isotopes Inc. ASPI1,526,252 shares²$3.0M at $1.95Jul 1, 2026

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

Recent filings

• Jul 1, 2026Sold 23,124 shares at $6.28 of ASP Isotopes Inc.²
• May 28, 2026Granted 840,000 shares of ASP Isotopes Inc.³
• Apr 15, 2026Sold 23,124 shares at $5.48 of ASP Isotopes Inc.⁴
• Dec 18, 2025Sold 80,000 shares at $5.80 of ASP Isotopes Inc.⁵
• Apr 14, 2025Granted 400,000 shares of ASP Isotopes Inc.⁶
• Jul 1, 2024Granted 400,000 shares of ASP Isotopes Inc.⁷