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ASPI

ASP Isotopes (ASPI) stock: insider trades, news & valuation

Materials · Net selling
Close · Oct 9, 2026 $2.65 -6.4% on the day -70.1% over 12 months 52-week range $2.60 – $14.05

Share price and insider trades

ASPI closeInsider buyInsider sale
051015NovDecJan 2026FebMarAprMayJunJulAugSepOctEEarnings release filed 2026-08-04Bought $21,600 on 2026-09-28 · Robert John Andrew RyanSold $36,199 on 2026-09-08 · Robert AinscowBought $40,200 on 2026-09-30 · Robert John Andrew RyanSold $52,316 on 2025-12-08 · Robert AinscowSold $59,066 on 2026-06-08 · Robert AinscowSold $126,720 on 2026-04-15 · Heather KiesslingSold $145,219 on 2026-07-01 · Heather KiesslingSold $158,653 on 2026-03-06 · Robert AinscowSold $177,880 on 2026-04-16 · Duncan Moore, Robert AinscowSold $306,000 on 2025-10-14 · Robert AinscowSold $312,500 on 2026-06-29 · Todd WiderSold $328,331 on 2026-09-03 · Paul Elliot MannSold $343,412 on 2026-09-04 · Paul Elliot MannSold $432,750 on 2025-11-25 · Paul Elliot Mann, Robert AinscowSold $464,000 on 2025-12-18 · Heather KiesslingSold $517,351 on 2026-09-02 · Donald George Ainscow, Paul Elliot Mann, Robert AinscowSold $649,970 on 2026-06-03 · Paul Elliot MannSold $660,013 on 2026-06-01 · Paul Elliot MannSold $694,354 on 2026-06-02 · Paul Elliot MannSold $882,112 on 2026-03-02 · Paul Elliot MannSold $932,380 on 2025-12-01 · Paul Elliot MannSold $1,108,100 on 2026-06-30 · Donald George Ainscow, Michael Gorley, Todd WiderSold $1,351,800 on 2025-11-17 · Paul Elliot Mann, Robert Ainscow
Bought, 12 months$62K
Sold, 12 months$9.7M
Insiders buying1
Insiders selling7

ASP Isotopes insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $62K and 7 sold $9.7M of ASPI stock on the open market.

ASPI insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q3 2025: $1.3M sold (2 trades)Q3 2025Q4 2025: $3.5M sold (8 trades)Q4 2025Q1 2026: $1.0M sold (3 trades)Q1 2026Q2 2026: $3.8M sold (11 trades)Q2 2026Q3 2026: $62K bought (2 trades)$62KQ3 2026: $1.4M sold (7 trades)Q3 2026Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0—0
Q3 2026$62K2$1.4M7
Q2 2026—0$3.8M11
Q1 2026—0$1.0M3
Q4 2025—0$3.5M8
Q3 2025—0$1.3M2

Valuation, profit and volume

Pick score 46/100
P/E (trailing)n/aSector median 23.3
Market value$406MSpecialty Chemicals
Profit margin0.0%Revenue growth +327.6%
Volume vs. 50-day1.1×Last 5 sessions
Insiders' paper profit−$850On all tracked purchases -1.4%

Summary

Over the past 12 months, 1 ASP Isotopes Inc. insider reported open-market purchases totaling $62K, while 7 insiders reported sales totaling $9.7M. 23 of 31 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

ASPI earnings: how the stock reacted

Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.

Does it matter? →
Release15 days beforeInsiders, 30 days beforeReaction (2 days)Next 30 days
Aug 4, 2026 +6.8% None -2.2%S&P +1.6% +3.7%

Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.

ASPI news sentiment trend

Weekly headline tone (positive minus negative headlines) over 13 weeks. Green dots mark weeks with insider buying.

Mixed
Jul 11Aug 1Aug 22Week of 2026-09-05: 1 headlines, 0 positive, 0 negativeSep 12Week of 2026-09-26: 3 headlines, 0 positive, 0 negativeInsider buying that weekOct 3
Last 30 days: 4 headlines, 0 positive, 0 negative

Tone is scored from headline wording only. It describes the news, not where the stock is going.

ASPI stock news and SEC filings

Recent 8-K filings and headlines. Tone is scored from the headline wording; “Policy” marks regulatory, trade or government topics.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Oct 1SEC Robert John Andrew RyanDirector Buy 15,000675,222 held (+2%) $2.68 $40K -1.1% —
Sep 30SEC Robert John Andrew RyanDirector Buy 8,000660,222 held (+1%) $2.70 $22K -1.9% —
Sep 10SEC Robert AinscowCOO Sell Plan 8,4382,248,441 held (−0%) $4.29 $36K -38.2% —
Sep 4SEC Paul Elliot MannCEO, Chair Sell Plan 83,7599,328,570 held (−1%) $4.10 $343K -35.4% —
Sep 4SEC Paul Elliot MannCEO, Chair Sell Plan 83,7589,412,329 held (−1%) $3.92 $328K -32.4% —
Sep 4SEC Paul Elliot MannCEO, Chair Sell Plan 83,7589,496,087 held (−1%) $3.91 $327K -32.2% —
Sep 4SEC Robert AinscowCOO Sell Plan 25,0002,256,879 held (−1%) $3.91 $98K -32.2% —
Sep 4SEC Donald George AinscowEvp, Gen Counsel, Secretary Sell 23,678776,322 held (−3%) $3.89 $92K -31.9% —
Jul 2SEC Donald George AinscowEvp, Gen Counsel, Secretary Sell 100,000800,000 held (−11%) $6.14 $614K -56.8% —
Jul 2SEC Heather KiesslingCFO Sell Plan 23,1241,526,252 held (−1%) $6.28 $145K -57.8% —
Jul 1SEC Todd WiderDirector Sell 50,000722,247 held (−6%) $6.25 $312K -57.6% —
Jul 1SEC Todd WiderDirector Sell 50,000672,247 held (−7%) $6.12 $306K -56.7% —
Jul 1SEC Michael GorleyDirector Sell 30,00087,908 held (−25%) $6.27 $188K -57.7% —
Jun 10SEC Robert AinscowCOO Sell Plan 8,4382,281,879 held (−0%) $7.00 $59K -62.1% —
Jun 3SEC Paul Elliot MannCEO, Chair Sell Plan 83,7589,663,424 held (−1%) $8.29 $694K -68.0% —
Jun 3SEC Paul Elliot MannCEO, Chair Sell Plan 83,7589,747,182 held (−1%) $7.88 $660K -66.4% —
Jun 3SEC Paul Elliot MannCEO, Chair Sell Plan 83,7599,579,845 held (−1%) $7.76 $650K -65.9% —
Apr 17SEC Heather KiesslingCFO Sell Plan 23,124709,376 held (−3%) $5.48 $127K -51.6% —
Apr 17SEC Robert AinscowCOO Sell Plan 22,5001,490,317 held (−1%) $5.21 $117K -49.1% —
Apr 17SEC Duncan MooreDirector Sell Plan 11,6421,044,928 held (−1%) $5.21 $61K -49.1% —
Apr 13SEC Robert AinscowCOO Sell Plan 25,0001,512,817 held (−2%) $4.51 $113K -41.2% —
Mar 6SEC Robert AinscowCOO Sell Plan 8,4381,537,817 held (−1%) $5.44 $46K -51.3% —
Mar 2SEC Paul Elliot MannChair Sell Plan 162,1537,597,385 held (−2%) $5.44 $882K -51.3% —
Dec 29SEC Heather KiesslingCFO Sell 80,000732,500 held (−10%) $5.80 $464K -54.3% —
Dec 11SEC Robert AinscowCEO, COO Sell Plan 8,4381,546,255 held (−1%) $6.20 $52K -57.3% —
Dec 3SEC Paul Elliot MannChair Sell Plan 162,1537,759,538 held (−2%) $5.75 $932K -53.9% —
Nov 28SEC Paul Elliot MannExecutive Officer Sell Plan 112,5007,971,691 held (−1%) $7.51 $845K -64.7% —
Nov 28SEC Paul Elliot MannExecutive Officer Sell Plan 50,0007,921,691 held (−1%) $5.77 $288K -54.1% —
Nov 28SEC Robert AinscowCEO, COO Sell Plan 25,0001,554,693 held (−2%) $5.77 $144K -54.1% —
Nov 19SEC Robert AinscowCEO, COO Sell Plan 67,5001,579,693 held (−4%) $7.51 $507K -64.7% —
Oct 16SEC Robert AinscowCEO, COO Sell Plan 22,5001,647,193 held (−1%) $13.60 $306K -80.5% —
Oct 3SEC Todd WiderDirector Sell 74,108710,230 held (−9%) $8.76 $649K -69.7% —
Oct 2SEC Michael GorleyDirector Sell 64,00081,360 held (−44%) $9.75 $624K -72.8% —

Insiders at ASP Isotopes Inc.

InsiderBoughtSoldLast filingScore
Paul Elliot MannCEO, Chair — $6.0M Sep 4, 2026 —
Robert AinscowCOO — $1.5M Sep 10, 2026 —
Todd WiderDirector — $1.3M Jul 1, 2026 —
Michael GorleyDirector — $812K Jul 1, 2026 —
Heather KiesslingCFO — $736K Jul 2, 2026 —
Donald George AinscowEvp, Gen Counsel, Secretary — $706K Sep 4, 2026 —
Robert John Andrew RyanDirector $62K — Oct 1, 2026 —
Duncan MooreDirector — $61K Apr 17, 2026 —

Insider activity at other Materials companies

Same sector, ranked by insider buying in the last 90 days.

  • AUGOAura Minerals Inc.$22.7M bought
  • AMRAlpha Metallurgical Resources, Inc.$12.6M bought
  • CXCEMEX SAB DE CV$6.9M bought
  • AMRZAmrize Ltd$2.6M bought
  • USLMUNITED STATES LIME & MINERALS INC$2.2M bought
  • HDSNHUDSON TECHNOLOGIES INC /NY$2.0M bought

ASPI stock: common questions

Are ASP Isotopes Inc. insiders buying ASPI stock?

In the past 12 months, 1 insiders reported open-market purchases of ASPI worth $62K. The latest was Director Robert John Andrew Ryan bought $40K of ASPI at $2.68 — largest purchase by this insider in our records.

Are ASP Isotopes Inc. insiders selling ASPI stock?

7 insiders reported sales worth $9.7M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is ASPI's 52-week range?

Over the past year ASPI has traded between $2.60 and $14.05. It last closed at $2.65 on Oct 9, 2026.