secwatch / observer

Archimedes Tech SPAC Partners III Co. — fact timeline

Source-grounded facts extracted from Archimedes Tech SPAC Partners III Co.'s SEC 8-K filings across all families, newest first. Each cites a verbatim SEC excerpt.

ARCI Archimedes Tech SPAC Partners III Co. JSON

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

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

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

“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.”
Equity Issuances

Archimedes Tech SPAC Partners III Co. issued 762,000 units of unit to the Sponsor and BTIG for $10.00 per Private Unit, generating total proceeds of $7,620,000.

“Simultaneously with the closing of the IPO, the Company consummated a private placement (the “Private Placement”) of an aggregate of 762,000 units (the “Private Units”) to the Sponsor and BTIG, at a price of $10.00 per Private Unit, generating total proceeds of $7,620,000.”
Governance Changes

Archimedes Tech SPAC Partners III Co.: Adopted amended and restated memorandum and articles of association in connection with IPO (effective 2026-01-22).

“On January 22, 2026, and in connection with the IPO, the Company adopted its Amended and Restated Memorandum and Articles of Association.”
Material Agreements

Archimedes Tech SPAC Partners III Co. entered into Administrative Services Agreement with Archimedes Tech SPAC Sponsors III LLC valued at Administrative services provided by Sponsor (effective 2026-01-22).

“● Letter Agreement, dated January 22, 2026, by and among the Company, Archimedes Tech SPAC Sponsors III LLC (the “Sponsor”), the initial shareholders and the officers and directors of the Company; ● Investment Management Trust Agreement, dated as of January 22, 2026, by and between the Company and Odyssey Transfer and Trust Company, as trustee; ● Registration Rights Agreement, dated as of January 22, 2026, by and among the Company and certain security holders of the Company; ● Private Units Subscription Agreement, dated January 22, 2026, by and between the Company and the Sponsor; ● Private Units Subscription Agreement, dated January 22, 2026, by and between the Company and BTIG; ● Indemnity Agreement, dated as of January 22, 2026, by and among the Company and each of the officers and directors of the Company; and ● Administrative Services Agreement, dated January 22, 2026, by and betwee”
Material Agreements

Archimedes Tech SPAC Partners III Co. entered into Indemnity Agreement with Officers and directors of the Company valued at Indemnification for officers and directors (effective 2026-01-22).

“Indemnity Agreement, dated as of January 22, 2026, by and among the Company and each of the officers and directors of the Company”
Material Agreements

Archimedes Tech SPAC Partners III Co. entered into Private Units Subscription Agreement (BTIG) with BTIG, LLC valued at Private placement of units to BTIG in connection with IPO (effective 2026-01-22).

“In connection therewith, the Company entered into the following agreements, forms of which were previously filed as exhibits to the Registration Statement: ● Underwriting Agreement, dated January 22, 2026, by and between the Company and BTIG, LLC, as representative of the underwriters (“BTIG”); ● Warrant Agreement, dated as of January 22, 2026, by and between the Company and Odyssey Transfer and Trust Company, as warrant agent; ● Letter Agreement, dated January 22, 2026, by and among the Company, Archimedes Tech SPAC Sponsors III LLC (the “Sponsor”), the initial shareholders and the officers and directors of the Company; ● Investment Management Trust Agreement, dated as of January 22, 2026, by and between the Company and Odyssey Transfer and Trust Company, as trustee; ● Registration Rights Agreement, dated as of January 22, 2026, by and among the Company and certain security holders of t”
Material Agreements

Archimedes Tech SPAC Partners III Co. entered into Private Units Subscription Agreement (Sponsor) with Archimedes Tech SPAC Sponsors III LLC valued at Private placement of units to Sponsor in connection with IPO (effective 2026-01-22).

“● Letter Agreement, dated January 22, 2026, by and among the Company, Archimedes Tech SPAC Sponsors III LLC (the “Sponsor”), the initial shareholders and the officers and directors of the Company; ● Investment Management Trust Agreement, dated as of January 22, 2026, by and between the Company and Odyssey Transfer and Trust Company, as trustee; ● Registration Rights Agreement, dated as of January 22, 2026, by and among the Company and certain security holders of the Company; ● Private Units Subscription Agreement, dated January 22, 2026, by and between the Company and the Sponsor; ● Private Units Subscription Agreement, dated January 22, 2026, by and between the Company and BTIG; ● Indemnity Agreement, dated as of January 22, 2026, by and among the Company and each of the officers and directors of the Company; and ● Administrative Services Agreement, dated January 22, 2026, by and betwee”
Material Agreements

Archimedes Tech SPAC Partners III Co. entered into Registration Rights Agreement with Certain security holders of the Company valued at Registration rights granted to certain security holders (effective 2026-01-22).

“Registration Rights Agreement, dated as of January 22, 2026, by and among the Company and certain security holders of the Company”
Material Agreements

Archimedes Tech SPAC Partners III Co. entered into Investment Management Trust Agreement with Odyssey Transfer and Trust Company valued at Trust agreement for $276,000,000 held for public shareholders (effective 2026-01-22).

“Investment Management Trust Agreement, dated as of January 22, 2026, by and between the Company and Odyssey Transfer and Trust Company, as trustee”
Material Agreements

Archimedes Tech SPAC Partners III Co. entered into Letter Agreement with Archimedes Tech SPAC Sponsors III LLC, initial shareholders, officers and directors valued at Lock-up and other agreements typical for SPAC IPO insiders (effective 2026-01-22).

“Letter Agreement, dated January 22, 2026, by and among the Company, Archimedes Tech SPAC Sponsors III LLC (the "Sponsor"), the initial shareholders and the officers and directors of the Company”
Material Agreements

Archimedes Tech SPAC Partners III Co. entered into Warrant Agreement with Odyssey Transfer and Trust Company valued at Warrant agency services for redeemable warrants exercisable at $11.50 per share (effective 2026-01-22).

“Warrant Agreement, dated as of January 22, 2026, by and between the Company and Odyssey Transfer and Trust Company, as warrant agent”
Material Agreements

Archimedes Tech SPAC Partners III Co. entered into Underwriting Agreement with BTIG, LLC valued at Notional amount of $276,000,000 in gross proceeds from IPO, including over-allotment exercise; 27,60 (effective 2026-01-22).

“Underwriting Agreement, dated January 22, 2026, by and between the Company and BTIG, LLC, as representative of the underwriters ("BTIG")”

Facts are extracted by an LLM and gated to those whose source quote is present verbatim in the filing text. Coverage is best-effort while backfill and monitoring mature; this is not yet a full-market index. See methodology.