Ben Landen was named Chief Executive Officer of Archimedes Tech SPAC Partners III Co., succeeding Long Long. As of November 6, 2026, Archimedes Tech SPAC Partners III Co. has reported 2 leadership change filings to the SEC under Item 5.02 of Form 8-K, from May 1, 2026 to July 17, 2026, naming 2 appointments and 1 departure (Form 8-K, May 1, 2026).
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Archimedes Tech SPAC Partners III Co. reported changes in 2 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-05-01 to 2026-07-17. They name 3 people, with 2 appointments and 1 departure. Every row below is cited to the filing it comes from, and this page adds each new change as Archimedes Tech SPAC Partners III Co. files it.
Also on the record for Archimedes Tech SPAC Partners III Co.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| May 13, 2026 | Stake report, Schedule 13G, by Adage Capital Management, L.P. | 5.1% of the class | 5%+ stakes | Source |
| January 26, 2026 | IPO filing, Form 424B4 | $10 a share | IPO filings | Source |
| January 26, 2026 | IPO filing, Form 424B4 | $10 a share | IPO filings | Source |
| January 20, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| January 15, 2026 | IPO filing, Form S-1/A | — | IPO filings | Source |
| December 23, 2025 | IPO filing, Form S-1 | — | IPO filings | Source |
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Companies that share a holder
- Adage Capital Management, L.P. also filed stake reports on 136 other companies: ACP Holdings Acquisition Corp. (Aug 2026), AmperCap Acquisition Company (Aug 2026), Aura Biosciences, Inc. (Aug 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-07-17 | In | Director | 8-K, 2026-07-17 | ||
| 2026-05-01 | Out | Chief Executive Officer | 8-K, 2026-05-01 | ||
| 2026-05-01 | In | Chief Executive Officer | 8-K, 2026-05-01 |
Who leads Archimedes Tech SPAC Partners III Co., as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Director: Stephen N. Cannon, appointed (filed 2026-07-17).
- Chief Executive Officer: Long Long, departure reported (filed 2026-05-01). No successor is named in these filings.
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Find candidates like Director at Archimedes Tech SPAC Partners III Co.Every change, in the filing's words
Appointed: Stephen N. Cannon, Director
On July 13, 2026, the board of directors (the "Board") of Archimedes Tech SPAC Partners III Co. (the "Company") appointed Stephen N. Cannon as a Class II director of the Board, effective immediately.
- The Board has determined that Mr. Cannon qualifies as an independent director and appointed him to serve as a member of the audit committee, the compensation committee and the nominating and corporate governance committee of the Board.
- Stephen N. Cannon, 58, serves as a director of Archimedes Tech SPAC Partners II Co. ("Archimedes II"), which completed its initial public offering in February 2025 and has announced a definitive merger agreement with Forge Nano Inc. Since 2014, Mr. Cannon has been President of Everest Partners Limited, a privately-owned investment firm focused on Asian private investments.
- From 2020 to 2022, Mr. Cannon served as Chief Executive Officer and President of Archimedes Tech SPAC Partners Co. ("Archimedes I"), a blank check company with $133 million held in trust which consummated its business combination with SoundHound AI, Inc. in April 2022.
- From 2020 to 2022, Mr. Cannon served as Chief Operating Officer and President of Global SPAC Partners Co., a blank check company with $169 million held in trust which consummated its business combination with Gorilla Technology Group Inc. in 2022.
- From 2019 to 2022, Mr. Cannon served as Chief Operating Officer and President of Ackrell SPAC Partners I Co., a blank check company with $140 million held in trust which liquidated its trust and delisted from Nasdaq in August 2022.
Departing: Long Long, Chief Executive Officer
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.
Appointed: Ben Landen, Chief Executive Officer
On the same date, Ben Landen was appointed as the Chief Executive Officer by the Company's board of directors, effective immediately.
- Mr. Long's resignation was not the result of any disagreement with the Company on any matter relating to the Company's operations, policies or practices.
- Mr. Long will continue to serve as a member on the Company's board of directors.
- Mr. Landen will continue serving as Chief Technology Officer.
- Ben Landen, 38, has been Chief Technology Officer of the Company since December 2025; Mr. Landen was previously its Chief Executive Officer and a director from August 2025 to December 2025.
- Since February 2025, Mr. Landen has served as a Special Advisor to Archimedes Tech SPAC Partners II Co. From 2021 to 2022, Mr. Landen served as a Special Advisor to Archimedes Tech SPAC Partners Co. In 2020, Mr. Landen co-founded Superposition Venture Partners, a technology-focused early-stage and pre-IPO investment firm and serves as its Managing Director.
- From 2021 to October 2025, Mr. Landen served as the Vice President of Business Development for the autonomous vehicle solutions developer, Cyngn Inc., after serving as the Senior Director of Product and Partnership for Cyngn Inc. from 2019.
- From 2017 to 2019, Mr. Landen served as the Head of Product & Business Development at DeepScale, a venture-backed startup that developed AI perception solutions for autonomous vehicles (acquired by Tesla in 2019).
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.