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NASDAQ · Industrials

ASP Isotopes Inc. (ASPI)

ASP Isotopes Inc. brought in $30.9M of revenue over the twelve months to June 30, 2026, up 573.4% from a year earlier. It posted a net loss of $117.3M. In fiscal 2025 capital spending exceeded operating cash flow by $47.4M. At June 30, 2026 it held $219.6M in cash against $59.8M of debt. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 14, 2026.

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Price
$1.98
-7.48% on the day · November 10, 2026
52-week range $1.66 to $9.24
Market cap
$303.6M
Revenue (last 12 months)
$30.9M
+573.4% year on year
Net margin
-380.3%

Key facts about ASP Isotopes Inc.

Net worth
ASP Isotopes Inc. has a market value (market cap) of $303.6M at the latest share price, and shareholders' equity of $264.7M on its balance sheet at June 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.
Revenue and profit
In fiscal 2025 revenue was $23.8M (+475.5% year on year), with a net loss of $159.8M. Over the 12 months to June 30, 2026: revenue $30.9M, net loss $117.3M.
Cash flow
In fiscal 2025 operations used $37.8M of cash.
Latest report
The latest periodic report (quarterly report, 10-Q) was filed with the SEC on August 14, 2026 and covers the period to June 30, 2026. Open on SEC EDGAR

What ASP Isotopes Inc. does

ASP Isotopes Inc. is registered with the SEC under industry code SIC 2890 (Miscellaneous Chemical Products). Its shares trade on NASDAQ under the ticker ASPI.

Revenue and profit by year

Revenue
FY22: $0 $0 FY22FY23: $433K $433K FY23FY24: $4.1M $4.1M FY24FY25: $23.8M $23.8M FY25
Net income
FY22: -$4.9M -$4.9M FY22FY23: -$16.3M -$16.3M FY23FY24: -$32.4M -$32.4M FY24FY25: -$159.8M -$159.8M FY25

Fiscal years as reported in annual reports. Amounts in USD.

Key figures

Fiscal yearRevenueOperating incomeNet incomeDiluted EPSFree cash flow
2025$23.8M-$59.9M-$159.8M-$2.11-$47.4M
2024$4.1M-$26.4M-$32.4M-$0.63-$26.4M
2023$433K-$16M-$16.3M-$0.49-$7.7M
2022$0-$5.1M-$4.9M-$0.18-$7.4M

Earnings: every quarter and the next report date

Full financial statements: income, balance sheet and cash flow

Where ASPI ranks in Industrials

Revenue$23.8M
#471 of 603 in Industrials · Bottom 22%
Revenue growth+475.5%
#4 of 520 in Industrials · Top 1%
Net margin-670.2%
#519 of 523 in Industrials · Bottom 1%
Free cash flow margin-198.9%
#482 of 489 in Industrials · Bottom 1%

Latest fiscal year of every company in the sector with the figure reported. Revenue is ranked among companies reporting in US dollars; growth and margins among companies with at least 10 million of revenue. Industrials

Dividends

Fiscal yearPer sharePaid outOf profit
2025n/a$0n/a
2024n/a$2.8Mn/a
2023n/a$0n/a

Per share as declared (or paid, where only that is reported), adjusted for stock splits the company itself restated. Yield is the latest fiscal year's dividend over the current price.

Latest SEC filings

What ASP Isotopes Inc. has filed recently, newest first. Each links to the original document on SEC EDGAR.

  1. November 6, 2026
  2. November 5, 2026
  3. October 26, 2026
  4. October 26, 2026
  5. October 15, 2026
  6. October 8, 2026
  7. October 2, 2026
  8. September 9, 2026
  9. September 9, 2026
  10. September 8, 2026

Recent insider filings (Forms 3, 4 and 144): 10, the latest on October 21, 2026. Insider transactions on SEC

Insider trades

What the people running ASP Isotopes Inc. did with its shares, from the Form 4 filings they must send the SEC within two business days.

Insiders bought $61.8K and sold $1.3M worth of shares in the last 90 days. Most of the selling (89%) was pre-planned under Rule 10b5-1 trading plans.

Bought (open market)
$61.8K
last 90 days
Sold
$1.3M
last 90 days
Net sold
329,721
$1.3M
DateInsiderWhatSharesPriceValueFiling
October 16, 2026 Kiessling HeatherChief Financial Officer Sold 21,830 $2.19 $47.8K Form 4
October 14, 2026 Ainscow RobertCOO Soldpre-planned (10b5-1) 22,500 $2.11 $47.6K Form 4
September 30, 2026 Ryan Robert John AndrewDirector Bought 15,000 $2.68 $40.2K Form 4
September 28, 2026 Ryan Robert John AndrewDirector Bought 8,000 $2.70 $21.6K Form 4
September 8, 2026 Ainscow RobertCOO Soldpre-planned (10b5-1) 8,438 $4.29 $36.2K Form 4
September 4, 2026 Mann Paul ElliotChairman and CEO, Director Soldpre-planned (10b5-1) 83,759 $4.10 $343.4K Form 4
September 3, 2026 Mann Paul ElliotChairman and CEO, Director Soldpre-planned (10b5-1) 83,758 $3.92 $328.3K Form 4
September 2, 2026 Mann Paul ElliotChairman and CEO, Director Soldpre-planned (10b5-1) 83,758 $3.91 $327.5K Form 4

All insider filings on SEC.gov · Where insiders are buying across the market

Who owns ASPI

Three views from three kinds of SEC filings, each with its own date. They overlap and are not added up.

5% holders

Anyone who owns more than 5% of a class of shares must say so on Schedule 13D (if they may seek to influence the company) or 13G (a passive holder). The latest filing of each holder is shown: 13G filings of the last 2 years, 13D of the last 3.

HolderOf classSharesFiled
ASP Isotopes Inc.13D, may seek influence with 1 related filers 36.7% 6,164,382 September 22, 2025
Mann Paul Elliot13G, passive 7% 7,759,538 February 17, 2026
AK Jensen Investment Management Ltd13G, passive 5.4% 4,955,261 November 14, 2025
Encompass Capital Advisors LLC13G, passive with 1 related filers 5.13% 6,413,362 January 23, 2026

Latest filings below 5%: The Vanguard Group 0% (March 26, 2026); BNP Paribas Asset Management UK Ltd 0.9% (February 9, 2026); AWM Investment Company, Inc. 4.3% (August 14, 2025).

Largest institutional holders

No Form 13F positions imported for this company yet.

Insiders

Reported holdings of insiders who filed a Form 4 in the last 12 months: the shares each one held after their latest reported transaction. This is not the total held by all insiders.

9 insiders reported holding 16,362,578 shares in total, about $32.4M at the last price.

HolderSharesAs of
Mann Paul ElliotChairman and CEO, Director 9,328,570 September 4, 2026
Ainscow RobertCOO 2,225,941 October 14, 2026
Kiessling HeatherChief Financial Officer 1,504,422 October 16, 2026
Moore DuncanDirector 1,044,928 April 16, 2026
Ainscow Donald GeorgeEVP, Gen Counsel, Secretary 776,322 September 2, 2026
Ryan Robert John AndrewDirector 675,222 September 30, 2026
Wider ToddDirector 672,247 June 30, 2026
Gorley MichaelDirector 87,908 June 30, 2026
Hunter Ralph L. JRDirector 47,018 December 18, 2025

Schedule 13D/13G filings on SEC.gov

All filings on SEC EDGAR

Questions about ASPI

What does ASP Isotopes Inc. do?

ASP Isotopes Inc. is a company in the Industrials sector, listed on NASDAQ as ASPI. Its shares trade on NASDAQ under the ticker ASPI.

What is ASP Isotopes Inc.'s net worth?

ASP Isotopes Inc. has a market value (market cap) of $303.6M at the latest share price, and shareholders' equity of $264.7M on its balance sheet at June 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.

Is ASP Isotopes Inc. profitable?

No. Over the twelve months to June 30, 2026 it reported a net loss of $117.3M on revenue of $30.9M.

How much revenue does ASP Isotopes Inc. make?

Over the twelve months to June 30, 2026 ASP Isotopes Inc. reported revenue of $30.9M. That is 573.4% more than a year earlier.

When did ASP Isotopes Inc. last report?

Its most recent periodic report is the quarterly report (10-Q) filed on August 14, 2026. It covers the period to June 30, 2026. Its newest filing of any kind is the form 425 filing from November 6, 2026.

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Where the numbers come from

Financial figures are the values ASP Isotopes Inc. tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.

Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.