Archimedes Tech SPAC Partners III CEO Long resigns; Ben Landen appointed as CEO

Archimedes Tech SPAC Partners III Co.

Long Long resigned as CEO effective April 28, 2026; not due to disagreement with the Company.
Long will continue to serve as a member of the board of directors.
Ben Landen appointed CEO immediately; will remain Chief Technology Officer.
Landen previously served as CEO and director from August to December 2025.
Landen co-founded Superposition Venture Partners; previously VP at Cyngn Inc.

item 5.02

Executive movements

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Appointed

Ben Landen

Chief Executive Officer

ARCI · Archimedes Tech SPAC Partners III Co.

Effective: 2026-04-28
Filed: May 1, 2026, 7:59 PM ET

On the same date, Ben Landen was appointed as the Chief Executive Officer by the Company’s board of directors, effective immediately.

Role change

Long Long

Chief Executive Officer

ARCI · Archimedes Tech SPAC Partners III Co.

Effective: 2026-04-28
Successor: Ben Landen
Filed: May 1, 2026, 7:59 PM ET

On April 28, 2026, Long Long notified the board of directors of Archimedes Tech SPAC Partners III Co. (the “Company”) of his resignation as Chief Executive Officer of the Company, effective immediately.

Key facts

Extracted from this filing and checked against the source text.

Executive change SEC 8-K Item 5.02 confidence 0.95

Ben Landen was appointed as Chief Executive Officer at Archimedes Tech SPAC Partners III Co..

Action: appointed
Role: Chief Executive Officer

Exact text from the filing

On the same date, Ben Landen was appointed as the Chief Executive Officer by the Company’s board of directors, effective immediately.

View on SEC.gov

Executive change SEC 8-K Item 5.02 confidence 0.95

Long Long resigned as Chief Executive Officer at Archimedes Tech SPAC Partners III Co..

Action: resigned
Role: Chief Executive Officer

Exact text from the filing

On April 28, 2026, Long Long notified the board of directors of Archimedes Tech SPAC Partners III Co. (the “Company”) of his resignation as Chief Executive Officer of the Company, effective immediately.

View on SEC.gov

Archimedes Tech SPAC Partners III Co. filing history →

Source: SEC EDGAR

accession 0001213900-26-050928

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