ASP Isotopes SEC Filings

AWM Investment Company, Inc. reports beneficial ownership of 3,931,186 shares of ASP Isotopes Inc., representing 4.3% of the outstanding common stock. AWM states it is the investment adviser to five funds and holds sole voting and sole dispositive power over the shares allocated across those funds, with individual fund holdings disclosed in the filing. The disclosure identifies the funds by name and provides a per‑fund share breakdown, making the ownership position transparent.

Filing statements indicate the shares are held in the ordinary course of business and were not acquired to change or influence control of the issuer. The filing also names the controlling principals associated with the funds and confirms there is no shared voting or dispositive power reported.

AWM Investment Company, Inc. reports beneficial ownership of 619,874 shares of ASP Isotopes Inc. common stock, representing 6.9% of the class. The shares are held by Special Situations Private Equity Fund, L.P. (SSPE), for which AWM acts as investment adviser, and AWM states it holds sole voting and sole dispositive power over these shares.

The filing identifies David M. Greenhouse and Adam C. Stettner as members of MG Advisers, L.L.C., the general partner of SSPE, and as controlling principals of AWM. The report includes a certification that the securities are held in the ordinary course of business and were not acquired for the purpose of changing or influencing control.

ASP Isotopes Inc. (ASPI) filed an 8-K disclosing Item 8.01 – Other Events. The company announced, via the attached 8-Aug-2025 press release, its expected commencement of a dual listing on the Johannesburg Stock Exchange (JSE). Management believes the additional listing will complement the existing Nasdaq quotation under ticker ASPI. No financial statements, guidance, or transactional details were provided in the filing. Exhibit 99.1 contains the full release (except its 6th-7th paragraphs), while Exhibit 104 supplies the Inline XBRL cover page data.

The dual-listing plan may widen ASPI’s investor base, improve liquidity and brand visibility in South Africa, but will also subject the company to JSE regulatory requirements and incremental compliance costs. No timeline, capital raise, or pricing information was included.

ASP Isotopes Inc. (ASPI) disclosed a material definitive agreement on 28 Jul 2025. The company is investing $5 million to acquire 2 million Series Seed-1 Preferred shares of privately held IsoBio, Inc. at $2.50 per share.

• Strategic fit: IsoBio develops antibody-isotope conjugate radiotherapeutics; ASPI gains exposure to oncology applications that can expand its isotope value chain.
• Governance rights: ASPI secures 1 of 3 IsoBio board seats, broad veto rights over major corporate actions, and weighted-average anti-dilution protection.
• Conversion terms: Preferred is convertible 1:1 into IsoBio common at $2.50, automatically upon ≥ $50 m IPO or 2/3 holder consent; shares are non-redeemable.
• Ancillary agreements: Investors’ Rights, ROFR/Co-Sale, and Voting pacts grant ASPI demand registration, first-offer rights, and opportunity to buy stock before key holders sell.
• Related-party aspect: ASPI CEO Paul Mann and director Todd Wider are also designated IsoBio directors, creating potential conflicts but ensuring oversight.
• Next steps: Management will discuss IsoBio on a 30 Jul 2025 investor call; slide deck filed as Exhibit 99.1.

No immediate financial results were provided; cash outflow and future dilution depend on IsoBio’s capital needs and exit timeline.

ASP Isotopes Inc. (Nasdaq: ASPI) filed an 8-K dated 28 Jul 2025 to disclose a joint press release with IsoBio, Inc. announcing IsoBio’s initial Series Seed financing. The funds will be used to advance IsoBio’s proprietary Antibody-Isotope Conjugate platform (AICs TM) aimed at oncology indications.

The companies will host an investor webcast on 30 Jul 2025 at 10:00 a.m. ET to discuss the collaboration. No dollar amount, valuation or ownership details were provided in the filing. The press release is furnished as Exhibit 99.1 (excluding its fifth and sixth paragraphs). No other items, financial statements or pro-forma data accompanied the report.

For ASPI, the disclosure signals strategic expansion into radiopharma-enabled biologics but carries limited immediate financial visibility. The filing is informational and does not amend prior guidance or trigger accounting changes.

On 23 Jul 2025 ASP Isotopes Inc. (ASPI) executed an Underwriting Agreement with Cantor Fitzgerald covering a registered direct offering of 7,500,000 common shares at $8.00 each. The underwriters will acquire the shares at $7.52, reflecting customary underwriting fees.

ASPI projects net proceeds of ≈ $56.2 million after commissions and expenses. Closing is slated for 25 Jul 2025, subject to standard conditions, under the company’s effective Form S-3 shelf (File No. 333-286860) and a related Rule 462(b) registration statement.

Simultaneously, the company terminated its unused $25 million at-the-market Equity Distribution Agreement with Canaccord Genuity, opting instead for the fully underwritten raise. Exhibits include the underwriting agreement (1.1), Blank Rome LLP legal opinion (5.1), and a pricing press release (99.1).