secwatch / observer
ASPI ASP Isotopes Inc.
CIK 0001921865 50 ready 8-Ks latest July 21, 2026, 8:05 AM ET RSS · JSON
Activity: NORMAL 5 filings / 30d vs 4 baseline
Ready 8-Ks 50
Latest filing July 21, 2026, 8:05 AM ET
Top materiality 0.85
Event mix other_material ×26 · m_and_a ×8 · leadership ×7
Sentiment 23 pos · 2 neg · 25 neu
Executive change recent →

Recent 8-K filings for ASPI

Executive changes

Appointed

Sipho Maseko

Director
ASPI · ASP Isotopes Inc.
Effective
2025-04-14
Filed
April 15, 2025, 7:59 PM ET
the Board appointed Sipho Maseko as director
Departed

Hendrik Strydom

Director
ASPI · ASP Isotopes Inc.
Effective
2025-04-14
Successor
Sipho Maseko
Filed
April 15, 2025, 7:59 PM ET
Dr. Hendrik Strydom, PhD, Chief Technology Officer of the Company, stepped down as a member of the board of directors of the Company
Role change

Robert Ainscow

Chief Operating Officer
ASPI · ASP Isotopes Inc.
Effective
2024-07-01
Successor
Heather Kiessling
Filed
June 13, 2024, 7:59 PM ET
Mr. Ainscow will resign as the Company’s Chief Financial Officer as of the Start Date and will continue in his role as Chief Operating Officer.
Appointed

Heather Kiessling

Chief Financial Officer
ASPI · ASP Isotopes Inc.
Effective
2024-07-01
Filed
June 13, 2024, 7:59 PM ET
On June 10, 2024, the Board of Directors (the “Board”) of ASP Isotopes Inc. (the “Company”) appointed Heather Kiessling as the Chief Financial Officer of the Company, effective as of July 1, 2024
Departed

Joshua Donfeld

director
ASPI · ASP Isotopes Inc.
Effective
2024-01-12
Successor
Rob Ryan
Filed
January 18, 2024, 6:59 PM ET
On January 12, 2024, Joshua Donfeld, a member of the board of directors (the “Board”) of ASP Isotopes Inc. (the “Company”), provided notice to the Company of his decision to voluntarily step down from the Board, effective immediately.
Appointed

Rob Ryan

director
ASPI · ASP Isotopes Inc.
Effective
2024-01-14
Filed
January 18, 2024, 6:59 PM ET
Effective January 14, 2024, the Board appointed Rob Ryan as director, to fill the vacancy on the Board created by the resignation of Mr. Donfeld.
Departed

Sergey Vasnetsov

Director
ASPI · ASP Isotopes Inc.
Effective
2023-10-23
Successor
Professor Mike Gorley
Filed
October 23, 2023, 7:59 PM ET
On October 19, 2023, Sergey Vasnetsov provided notice to the Company of his decision to voluntarily step down from the Company’s board of directors, effective October 23, 2023.
Appointed

Professor Mike Gorley

Director
ASPI · ASP Isotopes Inc.
Effective
2023-10-23
Filed
October 23, 2023, 7:59 PM ET
the Board appointed Professor Mike Gorley to serve as a director of the Company, effective immediately following Mr. Vasnetsov’s resignation.

Materiality & sentiment trend

Max materiality 0.85 · Median 0.60 · Most common event other_material

23 positive 2 negative 25 neutral

source · ASPI on sec.gov