ASPI - NASDAQ
ASP Isotopes Inc. Common Stock
$7.97
+5.6%ASP Isotopes Inc., a pre-commercial stage advanced materials company, focuses on the production, distribution, marketing, and sale of isotopes. It develops Molybdenum-100, a non-radioactive isotope for the medical industry; Carbon-14; and Silicon-28. The company also Uranium-235, an isotope of uranium for carbon-free energy industry. ASP Isotopes Inc. was incorporated in 2021 and is based in Boca Raton, Florida.
At a Glance
Live SnapshotASP Isotopes Inc. Common Stock Management Team
Ms. Heather Kiessling
Chief Financial Officer
Compensation
$600,000
Mr. Robert Ainscow
Chief Operating Officer
Compensation
$490,000
Dr. Hendrik Strydom B. Sc, M. Sc, Ph.D.
Chief Technology Officer
Mr. William Eden M.B.E.
Global Head of HR & Director UK Nuclear Operations
Mr. Hendrik T. van Wyk
Head of Engineering
Dr. Xandra van Heerden Ph.D.
Head of Research & Development
Dr. Gerdus Kemp M.D., Ph.D.
Medical Director & Chief Executive Officer of Pet Labs
Mr. Paul Elliot Mann C.F.A.
President, Chief Executive Officer & Executive Chairman
Compensation
$1,010,000
ASP Isotopes Inc. Common Stock Insider Positioning
During the last 12 months, insiders have purchased $1.07M and sold $6.01M worth of ASPI shares, resulting in $4.93M of net selling activity.
3 Months
0
0.00
308.5K
2.31M
-2.3M
-$2.31M
3-6 Months
162.2K
881.46K
121.9K
674.85K
+207K
+$207K
6-9 Months
96.0K
192.00K
439.7K
3.02M
-2.8M
-$2.83M
9-12 Months
0
0.00
0
0.00
+0
+$0
Top Buyers
Mann Paul Elliot
Officer: Executive Chairman
$881K
Wider Todd
Director
$192K
Top Sellers
Mann Paul Elliot
Director, Officer: Chairman And Ceo
$4.07M
Ainscow Robert
Officer: Coo
$1.29M
Kiessling Heather
Officer: Chief Financial Officer
$591K
Moore Duncan
Director
$61K
Insider Activity Analysis
Net Insider Sentiment
Strong bearish signal with $4.93M net selling. Heavy insider selling may indicate concerns about valuation or near-term prospects.
Buy/Sell Ratio
Weak buy/sell ratio. Selling significantly exceeds buying—monitor for potential fundamental concerns.
Recent Trend (3 Months)
Heavy recent selling activity. Recent insider sales notably exceed purchases—may warrant investigation into company developments.
Insider Participation
4 insider sellers vs. 2 buyers. More insiders selling than buying suggests cautious or negative sentiment.
Insider Activity Insight
Multiple red flags: Heavy selling, numerous sellers, and continued recent selling create a concerning pattern. Investigate fundamental drivers and consider whether company guidance or industry conditions have deteriorated.
SEC Filings
ASPI - Filing history and reports
| Filing Type | Filing Date | Period Ending | Fiscal Year | Actions |
|---|---|---|---|---|
DEF 14A DEF 14A 2025 N/A | November 25, 2025 | December 08, 2025 | 2025 | |
DEF 14A DEF 14A 2024 N/A | October 21, 2024 | November 20, 2024 | 2024 | |
DEF 14A DEF 14A 2023 N/A | November 02, 2023 | November 01, 2023 | 2023 |
Research Paths
Snapshot
Start with context, operating signals, and key market metrics.
Value Model
Stress test fair value across bear, base, and bull assumptions.
Statements
Validate revenue quality, margins, and balance sheet durability.
Earnings Call
Read management commentary and compare it with reported outcomes.
Dividends
Check payout sustainability and long-term distribution behavior.
Analyst Expectations
Review consensus spread and where estimate risk is concentrated.