ASP Isotopes Inc. planned insider sales
In the last twelve months insiders at ASP Isotopes Inc. filed 21 Form 144 notices of planned sales, 1.4 million shares worth $7.9 million at the time of filing, from 8 sellers. The latest, filed 16 October 2026: Heather Kiessling (affiliate), 21,830 shares worth $47,975, planned for around 16 October 2026 through J.P. Morgan Securities LLC.
| Filed | Seller | Relationship | Shares | Value | Planned sale | Sold, per Form 4 | Broker | How acquired | Filing |
|---|---|---|---|---|---|---|---|---|---|
| 16 October 2026 | Heather Kiessling | Affiliate | 21,830 | $47,975 | 16 October 2026 | 21,830 shares from 16 October 2026 | J.P. Morgan Securities LLC | Acquired as compensation - Restricted Stock Award | Form 144 |
| 14 October 2026 | Ainscow Robert | Officer | 22,500 | $46,575 | 14 October 2026 | 22,500 shares from 14 October 2026 | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 25 September 2026 | Todd Wider | Director | 200,000 | $590,000 | 25 September 2026 | None on Form 4 yet | J.P. Morgan Securities LLC | Compensation | Form 144 |
| 2 September 2026 | Ainscow Robert | Officer | 25,000 | $94,500 | 2 September 2026 | 33,438 shares from 2 September 2026 | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 2 September 2026 | Donald George Ainscow | Affiliate | 50,000 | $194,391 | 2 September 2026 | 23,678 shares from 2 September 2026 | J.P. Morgan Securities LLC | Acquired as compensation - Restricted Stock Award | Form 144 |
| 2 September 2026 | Mann Paul Elliot | Director, Officer | 83,758 | $316,605 | 2 September 2026 | 251,275 shares from 2 September 2026 | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 30 June 2026 | Ainscow Donald George | Officer | 100,000 | $622,000 | 30 June 2026 | 100,000 shares from 30 June 2026 | CitiGroup Global Mkts. Inc. | Private placement | Form 144 |
| 29 June 2026 | Gorley Michael | Director | 30,000 | $186,600 | 29 June 2026 | 30,000 shares from 30 June 2026 | Independent Trading Group (ITG) Inc. | Restricted Stock Award | Form 144 |
| 29 June 2026 | Todd Wider | Director | 100,000 | $628,000 | 29 June 2026 | 100,000 shares from 29 June 2026 | J.P. Morgan Securities LLC | Compensation | Form 144 |
| 8 June 2026 | Ainscow Robert | Officer | 8,438 | $58,138 | 8 June 2026 | 8,438 shares from 8 June 2026 | INDEPENDENT TRADING GROUP (ITG) INC. | ACQUIRED AS COMPENSATION - RESTRICTED STOCK AWARD | Form 144 |
| 1 June 2026 | Mann Paul Elliot | Director, Officer | 251,275 | $2.0 million | 1 June 2026 | 251,275 shares from 1 June 2026 | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 17 April 2026 | Moore Duncan | Director | 11,642 | $62,634 | 16 April 2026 | 11,642 shares from 16 April 2026 | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 16 April 2026 | Ainscow Robert | Officer | 22,500 | $121,050 | 16 April 2026 | 22,500 shares from 16 April 2026 | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 15 April 2026 | Heather Kiessling | Officer | 46,248 | $231,240 | 15 April 2026 | 46,248 shares from 15 April 2026 | J.P. Morgan Securities LLC | Restricted Stock Award | Form 144 |
| 13 April 2026 | Ainscow Robert | Officer | 25,000 | $112,000 | 13 April 2026 | No matching Form 4 sale | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 6 March 2026 | Ainscow Robert | Officer | 8,438 | $43,118 | 6 March 2026 | 33,438 shares from 6 March 2026 | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 2 March 2026 | Mann Paul Elliot | Director, Officer | 162,153 | $865,897 | 2 March 2026 | 162,153 shares from 2 March 2026 | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 18 December 2025 | Heather Kiessling | Chief Financial Officer | 80,000 | $460,800 | 18 December 2025 | 80,000 shares from 18 December 2025 | J.P. Morgan Securities LLC | Restricted Share Award | Form 144 |
| 11 December 2025 | Ainscow Robert | Officer | 8,438 | $51,641 | 8 December 2025 | No matching Form 4 sale | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 25 November 2025 | Mann Paul Elliot | Director, Officer | 112,500 | $731,250 | 15 November 2025 | 212,153 shares from 25 November 2025 | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
| 17 November 2025 | Ainscow Robert | Officer | 67,500 | $438,750 | 17 November 2025 | 100,938 shares from 17 November 2025 | Independent Trading Group (ITG) Inc. | Acquired as compensation -Restricted Stock Award | Form 144 |
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.