Senior insider sale
Chief Financial Officer at ASP ISOTOPES INC. — senior position signals high conviction
$460.8K
80K shares
What this filing means
KIESSLING HEATHER plans to sell 80K shares of ASP ISOTOPES INC. valued at approximately $460.8K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 12/18/2025ACC: 0001968582-25-001265
Officer· Chief Financial Officer
80K
Shares to sell
$460.8K
Approx. market value
80K
Acquired (3 months)
1
Planned
Securities Acquired — Last 3 Months2
Restricted Share Award
Vesting
4/14/2025
40KRestricted Share Award
Vesting
7/1/2024
40KTotal acquired80K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
4/14/2025 | Restricted Share Award Vesting | 40K | — |
7/1/2024 | Restricted Share Award Vesting | 40K | — |
| Total | 80K | ||
Planned & Completed Dispositions1
NasdaqPlanned
Units to sell
80K
Market value
$460.8K
12/18/2025
Total
Units
80K
Value
$460.8K
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
12/18/2025 | 80K | $460.8K | Nasdaq | Planned |
| Total | 80K | $460.8K | ||