Kiessling Heather
Chief Financial Officer
Sale
Calculated transaction value
$47.81K
21,830 shares @ $2.19
Traded
Oct 16, 2026
Filed
Oct 21, 2026
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ASP Isotopes Inc
ASPI
ManufacturingChemicals
Transactions reported in official disclosures
Price with disclosed trades
Daily closes, past year · marks sit on transaction dates, sized by value
15 trades
| Reporting person | Filed | Transaction | Transaction value | Source | Actions |
|---|---|---|---|---|---|
| Kiessling Heather Chief Financial Officer | Oct 21, 2026 5-day lag | Sale Oct 16, 2026 | $47.81K Filed shares x price | SEC Form 4 View filing | |
| Ainscow Robert COO | Oct 16, 2026 2-day lag | Sale Oct 14, 2026 | $47.56K Filed shares x price | SEC Form 4 View filing | |
| Ryan Robert John Andrew Director | Oct 1, 2026 1-day lag | Buy Sep 30, 2026 | $40.2K Filed shares x price | SEC Form 4 View filing | |
| Ryan Robert John Andrew Director | Sep 30, 2026 2-day lag | Buy Sep 28, 2026 | $21.6K Filed shares x price | SEC Form 4 View filing | |
| Ainscow Robert COO | Sep 10, 2026 2-day lag | Sale Sep 8, 2026 | $36.22K Filed shares x price | SEC Form 4 View filing | |
| Mann Paul Elliot Chairman And CEO | Sep 4, 2026 Same-day filing | Sale Sep 4, 2026 | $343.41K Filed shares x price | SEC Form 4 View filing | |
| Mann Paul Elliot Chairman And CEO | Sep 4, 2026 1-day lag | Sale Sep 3, 2026 | $328.33K Filed shares x price | SEC Form 4 View filing | |
| Ainscow Robert COO | Sep 4, 2026 2-day lag | Sale Sep 2, 2026 | $97.63K Filed shares x price | SEC Form 4 View filing | |
| Mann Paul Elliot Chairman And CEO | Sep 4, 2026 2-day lag | Sale Sep 2, 2026 | $327.49K Filed shares x price | SEC Form 4 View filing | |
| Ainscow Donald George EVP, Gen Counsel, Secretary | Sep 4, 2026 2-day lag | Sale Sep 2, 2026 | $92.11K Filed shares x price | SEC Form 4 View filing | |
| Kiessling Heather Chief Financial Officer | Jul 2, 2026 1-day lag | Sale Jul 1, 2026 | $145.22K Filed shares x price | SEC Form 4 View filing | |
| Ainscow Donald George EVP, Gen Counsel, Secretary | Jul 2, 2026 2-day lag | Sale Jun 30, 2026 | $614K Filed shares x price | SEC Form 4 View filing | |
| Wider Todd Director | Jul 1, 2026 1-day lag | Sale Jun 30, 2026 | $306K Filed shares x price | SEC Form 4 View filing | |
| Wider Todd Director | Jul 1, 2026 2-day lag | Sale Jun 29, 2026 | $312.5K Filed shares x price | SEC Form 4 View filing | |
| Gorley Michael Director | Jul 1, 2026 1-day lag | Sale Jun 30, 2026 | $188.1K Filed shares x price | SEC Form 4 View filing |
Ainscow Robert
COO
Sale
Calculated transaction value
$47.56K
22,500 shares @ $2.11
Traded
Oct 14, 2026
Filed
Oct 16, 2026
Ryan Robert John Andrew
Director
Buy
Calculated transaction value
$40.2K
15,000 shares @ $2.68
Traded
Sep 30, 2026
Filed
Oct 1, 2026
Ryan Robert John Andrew
Director
Buy
Calculated transaction value
$21.6K
8,000 shares @ $2.7
Traded
Sep 28, 2026
Filed
Sep 30, 2026
Ainscow Robert
COO
Sale
Calculated transaction value
$36.22K
8,438 shares @ $4.29
Traded
Sep 8, 2026
Filed
Sep 10, 2026
Mann Paul Elliot
Chairman And CEO
Sale
Calculated transaction value
$343.41K
83,759 shares @ $4.1
Traded
Sep 4, 2026
Filed
Sep 4, 2026
Mann Paul Elliot
Chairman And CEO
Sale
Calculated transaction value
$328.33K
83,758 shares @ $3.92
Traded
Sep 3, 2026
Filed
Sep 4, 2026
Ainscow Robert
COO
Sale
Calculated transaction value
$97.63K
25,000 shares @ $3.9
Traded
Sep 2, 2026
Filed
Sep 4, 2026
Mann Paul Elliot
Chairman And CEO
Sale
Calculated transaction value
$327.49K
83,758 shares @ $3.91
Traded
Sep 2, 2026
Filed
Sep 4, 2026
Ainscow Donald George
EVP, Gen Counsel, Secretary
Sale
Calculated transaction value
$92.11K
23,678 shares @ $3.89
Traded
Sep 2, 2026
Filed
Sep 4, 2026
Kiessling Heather
Chief Financial Officer
Sale
Calculated transaction value
$145.22K
23,124 shares @ $6.28
Traded
Jul 1, 2026
Filed
Jul 2, 2026
Ainscow Donald George
EVP, Gen Counsel, Secretary
Sale
Calculated transaction value
$614K
100,000 shares @ $6.14
Traded
Jun 30, 2026
Filed
Jul 2, 2026
Wider Todd
Director
Sale
Calculated transaction value
$306K
50,000 shares @ $6.12
Traded
Jun 30, 2026
Filed
Jul 1, 2026
Wider Todd
Director
Sale
Calculated transaction value
$312.5K
50,000 shares @ $6.25
Traded
Jun 29, 2026
Filed
Jul 1, 2026
Gorley Michael
Director
Sale
Calculated transaction value
$188.1K
30,000 shares @ $6.27
Traded
Jun 30, 2026
Filed
Jul 1, 2026