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ASPI - Asp Isotopes Inc.

Insider Sale by Ainscow Robert (COO)

1 Month
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Trade Summary

5 days ago, Ainscow Robert, serving as COO at Asp Isotopes Inc. (ASPI), sold 22,500 shares at $5.21 per share, for a total transaction value of $117,113.00. Following this transaction, Ainscow Robert now holds 1,490,317 shares of ASPI.

This sale represents a 1.00% decrease in Ainscow Robert's stake in the company. This is considered a medium-conviction trade.

The trade was executed on Thursday, April 16, 2026 and publicly disclosed via SEC Form 4 filing on Friday, April 17, 2026, 1 day after the trade was made.

Asp Isotopes Inc. operates in the BASIC MATERIALS sector, specifically within the CHEMICALS industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.

Ainscow Robert

Ainscow Robert

COO

Robert Ainscow is a co-founder of ASP Isotopes Inc. (NASDAQ: ASPI), established in September 2021, and serves as its Chief Operating Officer (COO).[[1]](https://aspisotopes.com/people/)[[2]](https://ir.aspisotopes.com/news-events/press-releases/detail/79/asp-isotopes-inc-announces-changes-to-the-executive) He was appointed Interim Chief Executive Officer (CEO) effective October 1, 2025, alongside his COO duties, following Paul Mann's temporary leave for health reasons; he also acts as CEO of the company's subsidiaries in South Africa, Guernsey, and Iceland, and previously served as Interim CFO from October 2022 to July 2024.[[2]](https://ir.aspisotopes.com/news-events/press-releases/detail/79/asp-isotopes-inc-announces-changes-to-the-executive)[[3]](https://markets.ft.markitdigital.com/data/equities/tearsheet/directors?s=ASPI%3ANAQ)[[5]](https://senspdf.jse.co.za/documents/SENS_20251006_S511467.pdf) Ainscow brings over 20 years of finance experience from firms including Morgan Stanley, Bear Stearns, and Investec Bank, starting in legal and regulatory roles focused on M&A and capital markets before becoming a Senior Transactor for bespoke transactions, particularly for early-stage companies.[[1]](https://aspisotopes.com/people/) He holds a BA in Law & Modern Languages from Bristol UWE in the UK.[[1]](https://aspisotopes.com/people/) As a corporate insider, he recently sold 22,500 shares on October 14, 2025, retaining ownership of approximately 1,647,193 shares.[[4]](https://www.investing.com/news/insider-trading-news/ainscow-interim-ceo-of-asp-isotopes-sells-305k-in-shares-93CH-4293606)[[6]](https://www.gurufocus.com/insider/224315/robert-ainscow)

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Trade Price

$5.21

Quantity

22,500

Total Value

$117,113.00

Shares Owned

1,490,317

Trade Date

Thursday, April 16, 2026

5 days ago

SEC Filing Date

Friday, April 17, 2026

Filed 1 day after trade

BASIC MATERIALSCHEMICALS

About Asp Isotopes Inc.

Company Overview

No company information available
View news mentioning ASPI

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