Quick Takeaways
- Heather Kiessling has 1 issuer position tracked on this page.
- Estimated disclosed ownership value: $3,885,961.
- Recent insider filing activity is available below.
Insider Trading & Ownership of Heather Kiessling
- Location
- Washington, Dc, DC
- Summary
- The estimated net worth of Heather Kiessling is at least $3,885,961 dollars as of 17 Apr 2026. Heather Kiessling is the Chief Financial Officer of ASP Isotopes Inc. and owns shares of ASP Isotopes Inc. (ASPI) stock worth about $3.89M.
- Signature
- /s/ Donald Ainscow, as attorney-in-fact
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Heather Kiessling and return when a new Insider Trading filing changes the record on this page.
This uses the existing product follow flow to surface future filing-backed changes without guessing what they mean.
What Changed
- Largest disclosed position: ASP Isotopes Inc. ($3,885,961).
- Past-year value change for that position: -$590,513.
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Source Evidence
Filed on Form 4
See Original Filing
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
Ownership of Heather Kiessling
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| ASPI | ASP Isotopes Inc. | Chief Financial Officer | $3,885,961 | -$590,513 | -13% | 15 Apr 2026 |
Insider Transactions Reported by Heather Kiessling:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.