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ASP Isotopes Inc. insider trading

In twelve months insiders at ASP Isotopes bought $61.8K and sold $9.5M on the open market; 23 of the 30 sales were under plans set months before.

Bought on the open market$61.8K2 purchases
Sold on the open market$9.5M30 sales
Sales set in advance23 of 30under Rule 10b5-1 plans
Pay taken in stockNone
New to this? How to read this page
  1. Insiders are the people who run the company: officers, directors and owners of 10% or more. They must report a trade on Form 4 within two business days.
  2. A purchase on the open market is the strongest sign: the insider spent their own money.
  3. A sale under a trading plan (Rule 10b5-1) says little: its dates were fixed months before. Sales outside a plan say more, but insiders sell for many reasons, such as taxes or a house.
  4. Grants, option exercises and shares held back for tax are left out.
  5. What is a Form 4? · Form 4 codes

What kind of trades

2 purchases worth $61.8K against 30 sales worth $9.5M; 23 of the sales were under plans set months before.

Purchasebought with their own money
Pay in stock, own choiceowed cash, chose shares
Sale outside a planthe insider picked the day
Sale under a plandates fixed months before
Says littlecompany plans, board pay, cash units
Bought
2 open market
Sold
723 under a plan

Every Form 4 line of the last twelve months, counted by kind. The grades come from the filing itself: whether the insider paid cash, whether a plan set the date, whether pay was taken in stock by choice.

Insider trades on the share price

last twelve months

31 marks over twelve months, each in its grade: solid for the stronger signs, hollow or grey for the ones that say little.

PurchasePay in stock, own choiceSale outside a planSale under a planSays little

The blue line is the daily close over twelve months. Each mark is one insider's trades on one day, on that day's price, sized by dollar value. Solid marks are the stronger signs; hollow and grey marks say little. Hover or tap a mark for who, how much and why.

Trades worth a closer look

A purchase stands out when two or more of these hold: a senior insider, several insiders buying within 90 days, a fall of 10% or more in the three months before, or over $1 million. A sale outside a plan is judged the same way. These are the Feed's rules.

Who traded

dollars, twelve months

8 insiders traded. The most: Mann Paul Elliot, sale under a plan $6.0M.

One row per insider, sold to the left and bought to the right, split by grade: the paler part of a bar is the part that says little.

How it compares

every company on the site

Open-market sales, twelve months

Open-market purchases, twelve months

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every Form 4 line

    Purchase: bought on the open market with their own moneyTook pay in stock, own choice: owed cash, chose shares instead; a softer signSale: sold on the open market, not under a plan set in advanceSale, trading plan: under a Rule 10b5-1 plan set up months before, so the date was fixed in advanceGrey lines: plan purchases, pay in stock taken by the whole board or under a company plan, and units paid in cash; they say little about the insider's own view
    TradedInsiderRoleTypeSharesPriceValueFiling
    16 October 2026Kiessling HeatherChief Financial OfficerSaleafter a 45% fall over three months · 81% below its one-year high · Form 144 notice 16 October 202621,830$2.19$47,808Form 4
    14 October 2026Ainscow RobertCOOSaletrading plan set in advance · Form 144 notice 14 October 202622,500$2.11$47,565Form 4
    30 September 2026Ryan Robert John AndrewDirectorPurchaseafter a 57% fall over three months · 81% below its one-year high15,000$2.68$40,200Form 4
    28 September 2026Ryan Robert John AndrewDirectorPurchaseafter a 58% fall over three months · 82% below its one-year high8,000$2.70$21,600Form 4
    8 September 2026Ainscow RobertCOOSaletrading plan set in advance · Form 144 notice 2 September 20268,438$4.29$36,216Form 4
    4 September 2026Mann Paul ElliotChairman and CEOSaletrading plan set in advance · Form 144 notice 2 September 202683,759$4.10$343,412Form 4
    3 September 2026Mann Paul ElliotChairman and CEOSaletrading plan set in advance · Form 144 notice 2 September 202683,758$3.92$328,331Form 4
    2 September 2026Ainscow Donald GeorgeEVP, Gen Counsel, SecretarySaleafter a 48% fall over three months · 72% below its one-year high · Form 144 notice 2 September 202623,678$3.89$92,107Form 4
    2 September 2026Ainscow RobertCOOSaletrading plan set in advance · Form 144 notice 2 September 202625,000$3.90$97,625Form 4
    2 September 2026Mann Paul ElliotChairman and CEOSaletrading plan set in advance · Form 144 notice 2 September 202683,758$3.91$327,494Form 4
    1 July 2026Kiessling HeatherChief Financial OfficerSaletrading plan set in advance · Form 144 notice 15 April 202623,124$6.28$145,219Form 4
    30 June 2026Ainscow Donald GeorgeEVP, Gen Counsel, SecretarySaleafter a 41% rise over three months · 56% below its one-year high · Form 144 notice 30 June 2026100,000$6.14$614,000Form 4
    30 June 2026Wider ToddDirectorSaleafter a 41% rise over three months · 56% below its one-year high · Form 144 notice 29 June 202650,000$6.12$306,000Form 4
    30 June 2026Gorley MichaelDirectorSaleafter a 41% rise over three months · 56% below its one-year high · Form 144 notice 29 June 202630,000$6.27$188,100Form 4
    29 June 2026Wider ToddDirectorSaleafter a 47% rise over three months · 56% below its one-year high · Form 144 notice 29 June 202650,000$6.25$312,500Form 4
    8 June 2026Ainscow RobertCOOSaletrading plan set in advance · Form 144 notice 8 June 20268,438$7.00$59,058Form 4
    3 June 2026Mann Paul ElliotChairman and CEOSaletrading plan set in advance · Form 144 notice 1 June 202683,759$7.76$649,970Form 4
    2 June 2026Mann Paul ElliotChairman and CEOSaletrading plan set in advance · Form 144 notice 1 June 202683,758$8.29$694,354Form 4
    1 June 2026Mann Paul ElliotChairman and CEOSaletrading plan set in advance · Form 144 notice 1 June 202683,758$7.88$660,013Form 4
    16 April 2026Ainscow RobertCOOSaletrading plan set in advance · Form 144 notice 16 April 202622,500$5.21$117,112Form 4
    16 April 2026Moore DuncanDirectorSaletrading plan set in advance · Form 144 notice 17 April 202611,642$5.21$60,597Form 4
    15 April 2026Kiessling HeatherChief Financial OfficerSaletrading plan set in advance · Form 144 notice 15 April 202623,124$5.48$126,673Form 4
    6 March 2026Ainscow RobertCOOSaletrading plan set in advance · Form 144 notice 6 March 202625,000$4.51$112,775Form 4
    6 March 2026Ainscow RobertCOOSaletrading plan set in advance · Form 144 notice 6 March 20268,438$5.44$45,894Form 4
    2 March 2026Mann Paul ElliotExecutive ChairmanSaletrading plan set in advance · Form 144 notice 2 March 2026162,153$5.44$881,464Form 4
    18 December 2025Kiessling HeatherChief Financial OfficerSaleafter a 37% fall over three months · 59% below its one-year high · Form 144 notice 18 December 202580,000$5.80$463,840Form 4
    8 December 2025Ainscow RobertInterim CEO and COOSaletrading plan set in advance · Form 144 notice 17 November 20258,438$6.20$52,341Form 4
    1 December 2025Mann Paul ElliotExecutive ChairmanSaletrading plan set in advance · Form 144 notice 25 November 2025162,153$5.75$932,866Form 4
    25 November 2025Ainscow RobertInterim CEO and COOSaletrading plan set in advance · Form 144 notice 17 November 202525,000$5.77$144,225Form 4
    25 November 2025Mann Paul ElliotExecutive OfficerSaletrading plan set in advance · Form 144 notice 25 November 202550,000$5.77$288,450Form 4
    17 November 2025Mann Paul ElliotExecutive OfficerSaletrading plan set in advance112,500$7.51$844,538Form 4
    17 November 2025Ainscow RobertInterim CEO and COOSaletrading plan set in advance · Form 144 notice 17 November 202567,500$7.51$506,722Form 4
    A filing with several lines appears once per line.
    Read morePay taken in stock by the insider's own choice has the filing's footnote, word for word, in the note under it; for the others, hold the pointer on the type. An award filed at no price shows n/a.