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ASP Isotopes

catalyst in 13dNo base rate yet — ASPI has 0 graded prints on the record, and the bar is 3.PowerWebsite
Ticker
ASPI
Beat
energy
Size
Public Company
Revenue
$5.1M
as of Jun 2026
Cash
$220M
as of Jun 2026
Burn
$27.4M/qtr
as of Jun 2026
Runway
~2.0yr at this rate
as of Jun 2026
Researched · Stale
10 days ago

A pre-revenue isotope-enrichment story trading on three real Western-monopoly catalysts (Yb-176, Si-28, HALEU) — but the FY25 "revenue" was construction it has since deconsolidated, the GAAP loss is a $124M convertible-note mark, and the tape is a 22%-short battleground stuck in active securities-fraud litigation. The science could be a generational supply-chain unlock; the accounting and promotion are exactly what shorts say they are. WATCHING, not yet ownable.

Orbit · who it trades with and competes with
3 on the rings · 1 trade · 2 rival
4 mentions across our dossiers
Focus · Energy
ASP Isotopes
ASPI · public
No published house view
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Price

Weekly closes

ASPI · weekly close
2.02 USD+3.9%
Friday 30 Oct 2026 · last 52 Fridays 1.95–9.00
pick a pin
Every pin is a dated row
Solid: filed with the SEC, settled at FINRA, or a recorded split. Hollow: the scheduled print, past the last close, never a price.
  1. Short interest: 26,455,716 sh · 5.31 days to cover, FINRA · settled 30 Sept 2026
  2. Next print: in 13 days, Scheduled · 13 Nov 2026, scheduled
2.02USD+3.9%energy +1.0%ASPI · 112 weekly closes to 2026-10-30

Who is buying

Shares sold shortFINRA · settled 30 Sept 2026
26,455,716 shares
Days to unwind the shortFINRA · settled 30 Sept 2026
5.31
see the whole series
Financials

The reported figures

Revenue · quarterly
$5.1M
latest, Q2 ’26 · 12 periods stored
Filed · primary
Q2 ’26
$5.1M USD
as of 30 Jun 2026
Source: sec.gov
ASP Isotopes, quarterly figures held, Q3 ’23 to Q2 ’26
PeriodAs ofRevenueFree cash flowCapexCashShares outstandingGradingSource
Q3 ’2330 Sept 2023$0 USD-$1.3M USD$682K USD—48.8M sharesFiled · primarysec.gov
Q4 ’2331 Dec 2023$433K USD-$3.2M USD$1.1M USD$7.9M USD—Filed · primarysec.gov
Q1 ’2431 Mar 2024$840K USD-$4.2M USD$1.2M USD—48.9M sharesFiled · primarysec.gov
Q2 ’2430 Jun 2024$1.0M USD-$7.7M USD$2.6M USD—66.7M sharesFiled · primarysec.gov
Q3 ’2430 Sept 2024$1.1M USD-$9.3M USD$4.5M USD$51.6M USD71.4M sharesFiled · primarysec.gov
Q4 ’2431 Dec 2024$1.2M USD-$5.1M USD$1.3M USD$61.9M USD—Filed · primarysec.gov
Q1 ’2531 Mar 2025$1.1M USD-$5.5M USD$2.3M USD$56.0M USD72.1M sharesFiled · primarysec.gov
Q2 ’2530 Jun 2025$1.2M USD-$9.7M USD$1.8M USD$67.7M USD75.1M sharesFiled · primarysec.gov
Q3 ’2530 Sept 2025$4.9M USD-$12.0M USD$3.1M USD$114M USD—Filed · primarysec.gov
Q4 ’2531 Dec 2025$16.7M USD-$20.2M USD$2.4M USD$280M USD110.8M sharesFiled · primarysec.gov
Q1 ’2631 Mar 2026$4.2M USD-$23.9M USD$6.1M USD$207M USD125.9M sharesFiled · primarysec.gov
Q2 ’2630 Jun 2026$5.1M USD-$27.4M USD$4.1M USD$220M USD125.9M sharesFiled · primarysec.gov

ASP Isotopes’s figures as the company reported them in its filings. Quarters are calendar quarters, so a company whose year ends in January shows each fiscal quarter under the calendar quarter it falls in. An empty slot is a quarter we hold no figure for.

Revenue · quarterlyQ3 ’23 – Q2 ’26
$5.1M+328% vs Q2 ’25

Q2 ’26 · as of Jun 2026

Revenue Q3 ’23: $0, as of Sep 2023Revenue Q4 ’23: $433K, as of Dec 2023 (Q4 worked out from the annual total)Revenue Q1 ’24: $840K, as of Mar 2024Revenue Q2 ’24: $1.0M, as of Jun 2024Revenue Q3 ’24: $1.1M, as of Sep 2024Revenue Q4 ’24: $1.2M, as of Dec 2024 (Q4 worked out from the annual total)Revenue Q1 ’25: $1.1M, as of Mar 2025Revenue Q2 ’25: $1.2M, as of Jun 2025Revenue Q3 ’25: $4.9M, as of Sep 2025Revenue Q4 ’25: $16.7M, as of Dec 2025 (Q4 worked out from the annual total)Revenue Q1 ’26: $4.2M, as of Mar 2026Revenue Q2 ’26: $5.1M, as of Jun 2026

Lighter bars: Q4 worked out as the full-year total minus the three reported quarters.

Free cash flow · quarterlyQ3 ’23 – Q2 ’26
-$27.4M

Q2 ’26 · as of Jun 2026

Free cash flow Q3 ’23: -$1.3M, as of Sep 2023Free cash flow Q4 ’23: -$3.2M, as of Dec 2023 (Q4 worked out from the annual total)Free cash flow Q1 ’24: -$4.2M, as of Mar 2024Free cash flow Q2 ’24: -$7.7M, as of Jun 2024Free cash flow Q3 ’24: -$9.3M, as of Sep 2024Free cash flow Q4 ’24: -$5.1M, as of Dec 2024 (Q4 worked out from the annual total)Free cash flow Q1 ’25: -$5.5M, as of Mar 2025Free cash flow Q2 ’25: -$9.7M, as of Jun 2025Free cash flow Q3 ’25: -$12.0M, as of Sep 2025Free cash flow Q4 ’25: -$20.2M, as of Dec 2025 (Q4 worked out from the annual total)Free cash flow Q1 ’26: -$23.9M, as of Mar 2026Free cash flow Q2 ’26: -$27.4M, as of Jun 2026

Lighter bars: Q4 worked out as the full-year total minus the three reported quarters.

Operating cash flow minus capital spending.

Cash · quarterlyQ4 ’23 – Q2 ’26
$220Mdebt $59.8M

Q2 ’26 · as of Jun 2026

Cash Q4 ’23: $7.9M, as of Dec 2023Cash Q3 ’24: $51.6M, as of Sep 2024Cash Q4 ’24: $61.9M, as of Dec 2024Cash Q1 ’25: $56.0M, as of Mar 2025Cash Q2 ’25: $67.7M, as of Jun 2025Cash Q3 ’25: $114M, as of Sep 2025Cash Q4 ’25: $280M, as of Dec 2025Cash Q1 ’26: $207M, as of Mar 2026Cash Q2 ’26: $220M, as of Jun 2026Debt Q4 ’24: $2.4M, as of Dec 2024Debt Q3 ’25: $13.9M, as of Sep 2025Debt Q4 ’25: $2.1M, as of Dec 2025Debt Q1 ’26: $58.3M, as of Mar 2026Debt Q2 ’26: $59.8M, as of Jun 2026

CashDebt

Shares outstanding · quarterlyQ3 ’23 – Q2 ’26
125.9M+158% since Q3 ’23

Q2 ’26 · as of Jun 2026

Shares outstanding Q3 ’23: 48.8M, as of Sep 2023Shares outstanding Q1 ’24: 48.9M, as of Mar 2024Shares outstanding Q2 ’24: 66.7M, as of Jun 2024Shares outstanding Q3 ’24: 71.4M, as of Sep 2024Shares outstanding Q1 ’25: 72.1M, as of Mar 2025Shares outstanding Q2 ’25: 75.1M, as of Jun 2025Shares outstanding Q4 ’25: 110.8M, as of Dec 2025Shares outstanding Q1 ’26: 125.9M, as of Mar 2026Shares outstanding Q2 ’26: 125.9M, as of Jun 2026

A rising count is dilution: each existing share owns less of the company.

Latest filing: sec.gov

The record

What happened

What happened
DateTypeWhat happenedSource
2026-10-26filing8-K: Tetra4 (Renergen subsidiary) achieves stable liquid helium productionPress release 26 Oct 2026 (Item 7.01): Tetra4 Proprietary Limited, a subsidiary of Renergen Limited, completed commissioning and achieved stable production of liquid helium.agent:company-events · SEC EDGAR 8-K
2026-10-21editorial noteSources added: 0 → 16The dossier's cited-link count grew from 0 to 16 (deep-dive-2026-06-18.md → deep-dive-2026-10-21.md).dossier
2026-10-21editorial noteRevenue figure revised: $000 → $5.1MRevenue moved from $000 (deep-dive-2026-06-18.md) to $5.1M (deep-dive-2026-10-21.md).dossier
2026-10-15filingASP Isotopes 8-K: Heads of Agreement with Necsa for HALEU joint ventureA subsidiary of Quantum Leap Energy LLC signed a Heads of Agreement with the Nuclear Energy Corporation of South Africa (Necsa) for a joint venture to build and operate a HALEU test bench and commercial-scale facility at Pelindaba.agent:company-events · SEC EDGAR 8-K
2026-10-08filingSC 13D: ASP Isotopes and LHE LNG report 15.1% of ENDRAEvent date 1 Oct 2026: ASP Isotopes and LHE LNG Holdings report 254,015 ENDRA shares (66,846 common plus 187,169 pre-funded warrants), 15.1% of class, tied to the ENDRA-Renergen/Noble Africa merger agreement.agent:company-events · SEC EDGAR SC 13D
2026-10-02filing8-K Item 7.01: ENDRA files Form S-4 for merger with RenergenReports the 25 Jun 2026 merger agreement among ENDRA, Noble Africa, Renergen and ASPI, and that ENDRA filed a Form S-4 on 2 Oct 2026 for the merger.agent:company-events · SEC EDGAR 8-K
dossier age
10 days
researched 21 Oct 2026 · ring fills at 180
pick a section
Each column is a section of the dossier
Its height is how many times the section names a filing: 31 mentions across 2 sections. A dashed foot names none.
Primary sources
  1. The dossier: Refresh delta (since 2026-06-18), 962 words, 31 filing mentions
  2. The dossier: What held, 71 words, no filing mention
Research

The ASP Isotopes dossier

The verdict

A pre-revenue isotope-enrichment story trading on three real Western-monopoly catalysts (Yb-176, Si-28, HALEU) — but the FY25 "revenue" was construction it has since deconsolidated, the GAAP loss is a $124M convertible-note mark, and the tape is a 22%-short battleground stuck in active securities-fraud litigation. The science could be a generational supply-chain unlock; the accounting and promotion are exactly what shorts say they are. WATCHING, not yet ownable.

Refresh delta (since 2026-06-18)

  1. Q2-2026 results (continuing operations). Revenue $5.1M (Q2-2025: $1.2M); six-month revenue $9.3M ($2.3M). Q2 gross profit $1.5M ($0.6M). Q2 operating loss $(34.2)M ($(12.0)M), with SG&A $28.9M and R&D $6.8M. Q2 net loss attributable to ASP Isotopes $(33.6)M (Q2-2025: $(75.1)M); six-month $(40.5)M ($(83.5)M). [sec.gov: Form 10-QThe quarterly version of the annual report. Lighter, and not audited. 2026-08-14, https://www.sec.gov/Archives/edgar/data/1921865/000119312526352603/aspi-20260630.htm; three and six months ended 2026-06-30]
  2. Balance sheet and cash. At 2026-06-30: cash $219.6M, short-term investments $35.3M, restricted cash $4.1M; convertible notes payable at fair value $203.4M ($199.3M at 2025-12-31); total liabilities $297.3M; accumulated deficit $(272.8)M. Net cash used in operating activities was $41.1M for the six months ($11.1M a year earlier). Cash and short-term investments together were $254.9M, against $327.3M at 2025-12-31. [sec.gov: 10-Q 2026-08-14, https://www.sec.gov/Archives/edgar/data/1921865/000119312526352603/aspi-20260630.htm; as of 2026-06-30]
  3. Share count. 130,148,698 shares outstanding at 2026-06-30 (111,677,771 at 2025-12-31). About 23.2M further shares were issued on 2026-07-16 in the exchange described in item 4. [sec.gov: 10-Q 2026-08-14, https://www.sec.gov/Archives/edgar/data/1921865/000119312526352603/aspi-20260630.htm]
  4. QLE convertible notes exchanged for ASPI stock. On 2026-07-15 (closed 2026-07-16) holders of about $109.2M principal of QLE's 2025 Convertible Notes (about 50% of those outstanding), plus accrued interest, exchanged them for about 23.2M ASPI common shares. Third-party holders now hold about $80.6M principal; ASPI holds about $139.2M. [sec.gov: 10-Q 2026-08-14, Note 22 Subsequent Events, https://www.sec.gov/Archives/edgar/data/1921865/000119312526352603/aspi-20260630.htm; event dated 2026-07-16]
  5. Litigation. Securities class action (S.D.N.Y.): after mediation the parties reached an agreement-in-principle (stay filed 2026-04-03); on 2026-07-07 plaintiffs moved for preliminary approval, and on 2026-07-09 the court preliminarily approved the settlement and set a settlement hearing for 2026-12-15. The 10-Q gives no settlement amount in the text I read. Four derivative actions are now disclosed (N.D. Tex. Jenis, filed 2026-01-30; S.D.N.Y. Stewart, 2026-03-02; N.D. Tex. Albers, 2026-06-10; S.D.N.Y. Manrique, 2026-07-01); Stewart and Jenis were stayed on 2026-07-02 and 2026-07-07. [sec.gov: 10-Q 2026-08-14, Legal Proceedings, https://www.sec.gov/Archives/edgar/data/1921865/000119312526352603/aspi-20260630.htm]
  6. Material weakness. The 10-Q repeats that remediation of the material weaknesses from the Form 10-KA company’s audited annual report to the US regulator. The most complete thing it publishes. is under way and says management cannot estimate how long it will take. [sec.gov: 10-Q 2026-08-14, Item 4, https://www.sec.gov/Archives/edgar/data/1921865/000119312526352603/aspi-20260630.htm]
  7. Management's commercial update (CEO letter, 8-K item 2.02, 2026-08-04; management statements, not audited figures). First Silicon-28 and Ytterbium-176 product shipments are now expected in 2H 2026, with delays attributed to equipment from former OEM suppliers; the Yb-176 plant is waiting on a continuous processing vessel expected in 2H 2026; Carbon-14 enrichment awaits feedstock from a Canadian take-or-pay customer in 2H 2026. PET Labs: 1H-2026 organic revenue growth over 50%, FY2026 revenue forecast about $14M ($6M in 2025). Renergen: helium production expected before 2026-09-30; an offtake for about 15% of Phase 1 helium at over $600/Mcf; Phase 2 construction expected to start in 2H 2026 with about $750M of senior debt from the U.S. DFC and Standard Bank, "subject to entering into binding definitive agreements". A 2031 EBITDA target above $300M is restated. [sec.gov: Form 8-KA filing for something that happened between reports and matters enough to tell shareholders now. 2026-08-04 exhibit 99.1, https://www.sec.gov/Archives/edgar/data/1921865/000119312526331596/aspi-ex99_1.htm]
  8. Renergen / Tetra4 helium. On 2026-08-20 ASPI announced that Tetra4 began commissioning the Phase 1 liquid helium plant. The 2026-08-06 8-K announced a five-year take-or-pay LNG contract priced above $16/GJ, with Phase 1 completion still targeted for Q3 2026. [sec.gov: 8-K 2026-08-20 exhibit 99.1, https://www.sec.gov/Archives/edgar/data/1921865/000119312526358072/aspi-ex99_1.htm; sec.gov: 8-K 2026-08-06 exhibit 99.1, https://www.sec.gov/Archives/edgar/data/1921865/000119312526336859/aspi-ex99_1.htm]
  9. Renergen debt. On 2026-08-14 Renergen signed a Second Amendment with Standard Bank: a secured ZAR 230.5M term loan (about $14.2M at the 8-K's exchange rate), made of the prior ZAR 155M principal plus capitalised interest; maturity 2027-08-14; effective rate 8.31%. [sec.gov: 8-K 2026-08-20 (items 1.01, 1.02, 2.03), https://www.sec.gov/Archives/edgar/data/1921865/000147793226005196/aspi_8k.htm]
  10. Renergen listing route. ASPI's 8-K of 2026-10-02 says ENDRA Life Sciences filed an S-4 on 2026-10-02 for the merger (agreement dated 2026-06-25) that would put Renergen's parent Noble Africa under a Nasdaq-listed ENDRA. The 2026-08-04 letter says ASPI would initially own about 89% of the combined company. [sec.gov: 8-K 2026-10-02, https://www.sec.gov/Archives/edgar/data/1921865/000147793226005971/aspi_8k.htm; sec.gov: 8-K 2026-08-04 exhibit 99.1, as above]
  11. QLE HALEU joint venture (newest filing). On 2026-10-15 QLE signed a binding Heads of Agreement with Necsa for a joint venture to build a HALEU test bench and commercial-scale facility at Pelindaba, South Africa; QLE would hold about 80% and Necsa about 20%. The release says QLE has offtake supply agreements with TerraPower and that South Africa's energy ministry approved QLE's source-material activities in July 2026. Earlier 7.01 items: Texas A&M uranium-conversion research agreement (2026-07-21); Namibia metal-conversion evaluation (2026-08-18); first Capital Markets Day held 2026-09-08 (summary not read in detail). [sec.gov: 8-K 2026-10-15 exhibit 99.1, https://www.sec.gov/Archives/edgar/data/1921865/000119312526422325/aspi-ex99_1.htm; sec.gov: 8-K 2026-07-21, 2026-08-18, 2026-09-08 exhibits 99.1, under https://www.sec.gov/Archives/edgar/data/1921865/]
  12. Earlier filings in the same window. (a) 8-K 2026-06-23: Tetra4 (Renergen) signed its first take-or-pay contract for contained helium with an Asian industrial gases company. (b) 8-K 2026-06-25, merger agreement: Noble Africa LLC, the holding company for Renergen, would merge with a subsidiary of ENDRA Life Sciences; concurrently Noble sells about 4,594,218 Class A units or Pre-funded warrantA right to buy shares that has already been paid for, bar a token penny. It behaves like a share the investor already owns, so leaving it out of a share count understates the company’s real size. to outside investors and 3,054,185 Class B units to ASPI at $6.57 per unit, for about $50M gross proceeds, closing immediately before the merger; ASPI contributes its Renergen equity for 55,500,000 Class B units, whose shares carry 10 votes each in ENDRA. (c) 8-K 2026-07-16 (item 8.01): recast of the FY2025 10-K financials to show the construction-services business as discontinued operations; stated not to be an amendment or restatement. (d) 8-K 2026-07-16 (exchange agreements): the QLE note exchange described in item 4. [sec.gov: 8-K 2026-06-23, https://www.sec.gov/Archives/edgar/data/1921865/000147793226003952/aspi_ex991.htm; sec.gov: 8-K 2026-06-25, https://www.sec.gov/Archives/edgar/data/1921865/000147793226004020/aspi_8k.htm; sec.gov: 8-K 2026-07-16, https://www.sec.gov/Archives/edgar/data/1921865/000119312526306136/aspi-20260716.htm]

Bearing on the position seed (facts only; the seed is unchanged). The seed's catalysts include "First commercial Yb-176/Si-28 shipment revenue, mid–H2 2026"; the 2026-08-04 letter now places first shipments in 2H 2026, and no filing I read reports a shipment. The seed names the class-action settlement terms as a catalyst; item 5 gives the court dates. It names the QLE S-1 and "next equity raise"; item 4 reports an exchange of QLE notes for 23.2M ASPI shares.

What held

  • Core enrichment output is still pre-commercial: Q2 revenue of $5.1M comes from PET Labs/product and collaboration revenue (item 1), and the isotope plants have not shipped (item 7).
  • The company still funds itself from its balance sheet: operating cash use of $41.1M in six months (item 2).
  • The ICFR material weakness is not remediated (item 6) and securities-fraud litigation is still live, now at settlement stage (item 5).

How our view changed

2 dossiers

Every dossier we have written on ASP Isotopes, newest first.

  1. current

    A pre-revenue isotope-enrichment story trading on three real Western-monopoly catalysts (Yb-176, Si-28, HALEU)

  2. A pre-revenue isotope-enrichment story trading on three real Western-monopoly catalysts (Yb-176, Si-28, HALEU)

Research trail

The research around ASP Isotopes

Covered in the Knowledge Base

Energy & Power

Company details

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