UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of ~~earliest~~ earliest event reported): ~~April~~July 2813, 2026

Archimedes Tech SPAC Partners III Co.

(Exact name of registrant as specified in its charter)

Cayman Islands		001-43071		N/A
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

2093 Philadelphia Pike #1968, Claymont, DE		19703
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (725) 312-2430

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Units, each consisting of one Ordinary Share and one-fourth of one redeemable Warrant	ARCIU	The Nasdaq Stock Market LLC
Ordinary Shares, par value $0.0001 per share	ARCI	The Nasdaq Stock Market LLC
Warrants, each whole warrant exercisable for one Ordinary Share	ARCIW	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On ~~April~~ 28July 13, 2026, ~~Long Long notified~~ the board of directors (the “Board”) of Archimedes Tech SPAC Partners III Co. (the “Company”) ofappointed Stephen ~~his~~N. ~~resignation~~ Cannon as ~~Chief~~a ~~Executive~~Class ~~Officer~~II director of the ~~Company~~Board, effective immediately. ~~Mr.~~The ~~Long’s~~Board ~~resignation~~has ~~was~~determined ~~not~~that ~~the~~Mr. ~~result~~Cannon ofqualifies ~~any~~as ~~disagreement~~an ~~with~~independent ~~the~~director ~~Company~~and onappointed ~~any~~him ~~matter relating~~ to ~~the~~serve ~~Company’s~~as ~~operations,~~a ~~policies~~member orof ~~practices.~~the ~~Mr.~~audit ~~Long~~committee, ~~will~~the ~~continue~~compensation tocommittee ~~serve~~and asthe anominating and ~~member~~corporate ongovernance ~~the~~committee ~~Company’s board~~ of ~~directors~~the Board.

OnStephen N. ~~the~~Cannon, 58, serves as a director of Archimedes Tech SPAC Partners II Co. (“Archimedes II”), which completed its initial ~~same~~public ~~date~~offering in February 2025 and has announced a definitive merger agreement with Forge Nano Inc. Since 2014, ~~Ben~~Mr. ~~Landen~~Cannon ~~was~~has ~~appointed~~been President asof ~~the~~Everest Partners Limited, a privately-owned investment firm focused on Asian private investments. From 2020 to 2022, Mr. Cannon served as Chief Executive Officer byand ~~the~~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. From 2017 to 2019, Mr. Cannon served as Chief Financial Officer of Twelve Seas Investment Company’s, ~~board~~a blank check company with $207 million held in trust which consummated its initial business combination with Brooge Energy Limited in December 2019. From 2017 to 2019, Mr. Cannon served as President, Chief Financial Officer and a director of ~~directors~~CM Seven Star Acquisition Corp., ~~effective~~a ~~immediately~~Nasdaq-listed SPAC, sponsored by a leading Chinese private equity firm, which consummated its business combination with Kaixin Auto Holdings in April 2019. From 2014 to 2016, Mr. Cannon served as Chief Executive Officer and a director of DT Asia Acquisition Corp., ~~Landen~~a ~~will~~Nasdaq-listed ~~continue~~SPAC, ~~serving~~which consummated its business combination with China Direct Lending Corp. in July 2016. From 2010 to 2014, Mr. Cannon was a Partner and Head of China for RedBridge Group Ltd., a boutique merchant banking firm focused on Chinese and Arabian Gulf cross-border investments. From 2009 to 2014, Mr. Cannon was a registered representative of, and senior advisor to, Ackrell Capital. From 2007 to 2010, Mr. Cannon served as Chief ~~Technology~~Financial Officer and a director of Hambrecht Asia Acquisition Corp., a Nasdaq-listed SPAC, which consummated its business combination with SGOCO Technology Ltd in April 2010. From 2005 to 2008, Mr. Cannon served as a Managing Director of Asian investment banking for WR Hambrecht+Co. Prior to WR Hambrecht+Co., Mr. Cannon worked at ABN AMRO, Donaldson, Lufkin & Jenrette, Smith Barney Shearson and Salomon Brothers. Mr. Cannon graduated from the University of Notre Dame with a Bachelor of Arts degree in Economics and a Bachelor of Science degree, majoring in Mechanical Engineering.

~~Ben~~No ~~Landen,~~family ~~38,~~relationships ~~has~~exist ~~been~~between ~~Chief Technology Officer of the Company since December 2025;~~ Mr. ~~Landen~~Cannon ~~was previously its Chief Executive Officer~~ and aany ~~director~~of ~~from~~the ~~August~~Company’s ~~2025~~directors toor ~~December~~other ~~2025.~~executive ~~Since February 2025, Mr~~officers. ~~Landen~~There ~~has~~is ~~served~~no ~~as a Special Advisor to Archimedes Tech SPAC~~arrangement ~~Partners~~or IIunderstanding ~~Co.~~between ~~From 2021 to 2022,~~ Mr. ~~Landen~~Cannon ~~served~~and asany aother ~~Special~~persons ~~Advisor~~pursuant to ~~Archimedes~~which ~~Tech~~he ~~SPAC~~was ~~Partners~~selected ~~Co.~~as Inan ~~2020, Mr~~officer. ~~Landen~~Other ~~co-founded Superposition~~than ~~Venture Partners, a technology-focused early-stage and pre-IPO investment firm and serves~~ as ~~its~~previously ~~Managing Director. From~~disclosed ~~2021~~in ~~to October 2025, Mr. Landen served as~~ the ~~Vice~~Company’s ~~President~~filings ofwith ~~Business Development for~~ the ~~autonomous~~Securities ~~vehicle~~and ~~solutions~~Exchange ~~developer~~Commission, ~~Cyngn~~ ~~Inc.,~~there ~~after~~are ~~serving~~no asrelated ~~the~~party ~~Senior~~transactions ~~Director~~involving ~~of Product and Partnership for Cyngn Inc. from 2019. From 2017 to 2019,~~ Mr. ~~Landen served~~Cannon ~~as the Head of Product & Business Development at DeepScale, a venture-backed startup~~ that ~~developed~~are AIreportable ~~perception~~under ~~solutions~~Item ~~for autonomous vehicles~~ 404(~~acquired by Tesla in 2019~~a). ~~Mr. Landen began his career as one~~ of ~~the~~Regulation first automotive business managers of Maxim Integrated, where he spearheaded the fledgling automotive business unit’s growth and ultimately managed a $100 million automotive semiconductor product lineS-K.

~~No family~~In ~~relationships~~connection ~~exist~~with ~~between~~the ~~Mr.~~appointment, ~~Landen~~the Company and ~~any~~Mr. ofCannon ~~the~~entered ~~Company’s~~into ~~directors~~a orjoinder ~~other~~to ~~executive~~the ~~officers.~~letter ~~There~~agreement isand noregistration ~~arrangement~~rights oragreement, ~~understanding~~each ~~between~~dated ~~Mr.~~January ~~Landen~~22, 2026, by and ~~any~~among ~~other~~the ~~persons~~Company ~~pursuant~~and tothe ~~which~~parties henamed ~~was~~therein ~~selected~~as well as an ~~officer.~~indemnification ~~Other~~agreement, ~~than~~which asare substantially ~~previously~~similar ~~disclosed in~~to the ~~Company’s~~letter ~~filings~~agreement, ~~with~~registration ~~the~~rights ~~Securities~~agreement and ~~Exchange~~indemnification ~~Commission~~agreements, ~~there~~respectively, ~~are~~entered ~~no related party transactions involving Mr. Landen~~into ~~that~~by ~~are~~the ~~reportable~~current ~~under~~officers ~~Item~~and ~~404(a)~~directors of ~~Regulation~~the ~~S-K~~Company.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	Archimedes Tech SPAC Partners III Co.

	By:	/s/ Ben Landen
	Name:	Ben Landen
	Title:	Chief Executive Officer

Dated: ~~May~~July 117, 2026

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