ARCI SEC filings, in plain English
Everything Archimedes Tech III has filed with the SEC that we hold — 28 filings, newest first, 26 with a plain-English summary of what changed and why it matters. Every row links to the primary document on EDGAR, so you can check the source rather than trust us.
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What changed: Form 10-Q quarterly report for Archimedes Tech SPAC Partners III Co. (ARCI) for the period ended June 30, 2026. This routine compliance exhibit updates the mechanical tracking of pre-combination liquidity and timelines. According to the filer, the demand deposit held in the Trust Account balances at $280,254,125 as of June 30, 2026, reflecting interest accumulation since the January 26, 2026 IPO closure that raised $276,000,000. The statutory completion window remains locked at 24 months post-closing, establishing a hard liquidation deadline of January 26, 2028. Sponsor conduct reflects standard structural agreements: the sponsor administers a $20,000 per month administrative support reimbursement beginning January 22, 2026, and holds 6,900,000 founder shares following a capitalization event. The underwriting agreement records a deferred commission liability of $9,660,000, which management notes is waived if the entity does not de-spac within the allotted timeframe. Why it matters: This filing substantiates the entity's operational status and financial trajectory ahead of the redemption horizon. Management reports zero operating revenues while targeting technology-sector acquisitions. For the six months ended June 30, 2026, the company disclosed $3,862,169 net income, driven by $4,254,125 in trust interest offset by $410,310 in general and administrative expenses. Principal Executive Officer Ben Landen and Chief Financial Officer Ming (K.M.) Chan certified disclosure controls as effective. Investors assess the $10.15 per-share temporary equity carrying value against the contractual protection threshold, while noting available sponsor-backed working capital loans up to $1,500,000 convertible at $10.00 per unit could alter post-combination ownership structure. The report confirms no pending litigation, no selected target, and preserves the January 26, 2028 wind-down schedule for investor valuation modeling.
What changed vs 2026-05-14trust $277.8M → $280.3M +1%trust account, sponsor loans outstanding, redeemable shares1 moved · 2 with no prior record of ours
- Trust account
- $277.8M$280.3M
- Sponsor loans outstanding
- $155K · unchanged
- Redeemable shares
- 27.6M · unchanged
SpacBrain reads this as $2,478,301 was added to the trust between the two filings.
The clause …“offering costs — 157,090 Long-term prepaid insurance 67,974 — Demand deposit held in Trust Account 280,254,125 — Total Assets $ 281,499,401 $ 182,090 Liabilities, Ordinary Shares Subject to Possible Redemption, and Shareholders’”…
The clause …“with the Initial Public Offering. As of December 31, 2025, the Company had borrowed $ 154,900 under the Promissory Note. At the closing of the Company’s Initial Public Offering, on January 26, 2026, the Company repaid the outstanding”…
The clause …“authorized; 7,662,000 and 6,900,000 shares issued and outstanding (excluding 27,600,000 and 0 shares subject to possible redemption) as of June 30, 2026 and December 31, 2025, respectively (1) 766 690 Additional paid-in capital —”…
Read from stored SEC filing text by a regex — no model is involved — and each side links to the filing it came from. “Not previously extracted” is a statement about our record, not about the company: the clause may be present in wording we do not match.
What changed: SEC Form 3 – Statement of Changes in Beneficial Ownership, specifically a routine compliance insider ownership report. This document is a routine compliance exhibit filed by director Stephen N. Cannon, disclosing that no non-derivative transactions or holdings were reported. Bearing on the requested mechanics, the filing confirms zero adjustments to insider equity positioning, imposes no alterations to the redemption calendar, preserves the stated $10.15 per share trust value, maintains the 2028-01-26 search deadline, and records no shifts in deal progress or sponsor conduct. Regarding other substance, the filing attributes no claims, projections, or operational updates to any chief executive, sponsor entity, or third party; it contains no references to customer contracts, revenue streams, market sizing, strategic pivots, proprietary technology, partnership formations, pending litigation, or personnel changes. Why it matters: Investors monitoring redemption triggers, trust preservation, and extension windows will note that this administrative disclosure carries no mechanical weight on liquidation thresholds, SPAC capital deployment, or merger timelines. As a standard initial insider holding report with an empty transaction column, it signals neither accelerated target pursuit nor sponsor realignment, leaving the existing 2028-01-26 timeline and $10.15 trust baseline undisturbed for ongoing investor due diligence.
What changed: Form 8-K Current Report filed pursuant to Item 5.02 regarding the appointment of an independent director. According to the filing, the board of directors of Archimedes Tech SPAC Partners III Co. appointed Stephen N. Cannon as a Class II director effective July 13, 2026. The Board determined he qualifies as an independent director and assigned him to the audit, compensation, and nominating and corporate governance committees. In connection with this appointment, the Company and Mr. Cannon entered into joinders to the letter agreement and registration rights agreement dated January 22, 2026, plus an indemnification agreement, each substantially similar to those of existing leadership. The filing does not alter the trust value per share of $10.15, the business combination deadline of 2028-01-26, or the status of deal progress, nor does it announce any extension vote, tender offer, or redemption deadline change. Why it matters: This is a routine governance filing that leaves the redemption calendar, trust balance, and acquisition timeline untouched. For investors tracking the SPAC's mechanics, the $10.15 per-share trust value and January 26, 2028 deadline remain fixed. The filing substantively highlights the sponsor's preference for seasoned operators, attributing to the registrant the statement that Mr. Cannon previously held executive roles tied to blank-check companies with trust accounts holding $133 million, $169 million, $140 million, and $207 million. His committee assignments strengthen oversight capacity during the SEARCHING phase, but absent a merger notice or extension proxy, sponsor conduct and capital deployment timelines proceed without mechanical alteration.
What changed: Quarterly report (Form 10-Q) for Archimedes Tech SPAC Partners III Co. for the period ended March 31, 2026 — its first quarterly filing after its IPO. The Company completed its IPO on January 26, 2026, selling 27,600,000 units at $10.00 per unit, including full exercise of the over-allotment, for gross proceeds of $276,000,000. Simultaneously, it sold 762,000 private placement units at $10.00 each for $7,620,000. A total of $276,000,000 was deposited into the trust account. As of March 31, 2026, the trust account held $277,775,824 (including interest earned). The Company had $1,109,625 in cash outside the trust and working capital of $1,213,092. 27,600,000 public shares are classified as temporary equity with a redemption value of $10.06 per share. The Company issued an additional 1,150,000 founder shares to the sponsor on January 22, 2026, and the 900,000 founder shares subject to forfeiture were released upon full exercise of the over-allotment. The Company's net income for the quarter was $1,574,054, entirely from interest income on the trust and bank accounts. The Company has 24 months from the IPO closing (i.e., until January 26, 2028) to complete a business combination. No target has been selected. Why it matters: This is the first comprehensive look at ARCI post-IPO. The trust per-share value is approximately $10.06, a bit above the $10.00 IPO price due to interest. The Company has a clean balance sheet with no debt, adequate working capital, and a long deadline (24 months from January 2026). Sponsor conduct appears standard: founder shares are locked up for six months post-business combination, and the sponsor and officers have agreed to waive redemption rights and vote in favor of any deal. There are no red flags regarding fees or unusual related-party transactions. The document confirms ARCI is actively searching for a tech target but has not yet identified one. For investors tracking redemption mechanics, the 15% limit on redemption for any single shareholder seeking to redeem via a vote (not tender offer) is worth noting.
What changed: A Joint Acquisition Statement pursuant to Rule 13d-1(k) attached to a Schedule 13G, executed on May 13, 2026, formalizing the shared filing responsibilities of Adage Capital Management, L.P., Robert Atchinson, and Phillip Gross. The filing records the three parties' mutual acknowledgment that they will submit the initial Schedule 13G and any future amendments together, while each party remains independently liable for the completeness, accuracy, and timeliness of the information specifically concerning themselves. The excerpt discloses no acquisition price, number of shares, percentage of outstanding stock, or effective date of the underlying position. Why it matters: For investors tracking redemption windows, trust accounting, extension votes, business combination timelines, or sponsor conduct, this filing registers zero mechanical change. It is a standard SEC ownership-disclosure formality confirming coordinated reporting among affiliated or aligned holders. The document contains no factual assertions regarding customer contracts, revenue recognition, total addressable market, strategic roadmap, technical infrastructure, commercial partnerships, active litigation, or executive appointments; consequently, no claims require attribution. Its sole function is to satisfy beneficial ownership reporting rules without altering Archimedes Tech III's operational or capital structure parameters.
What changed: A Form 8-K Current Report filed under Section 13 or 15(d) of the Securities Exchange Act of 1934, submitting routine regulatory disclosures under Item 5.02 regarding executive departures and appointments. This filing introduces no adjustments to the redemption calendar, trust account valuation, extension provisions, business combination timeline, or sponsor compliance track record. Instead, it records that on April 28, 2026, Long Long resigned as Chief Executive Officer effective immediately while retaining his board seat, and the board simultaneously appointed Ben Landen as Chief Executive Officer effective the same date, allowing him to continue serving as Chief Technology Officer. Why it matters: Executive succession alters day-to-day fiduciary oversight during the search phase without modifying trust mechanics or the stated liquidation horizon. The filing explicitly states that Mr. Long’s departure stemmed from no disagreement concerning the Company’s operations, policies, or practices, thereby eliminating near-term governance friction. According to the document, Mr. Landen (age 38) draws upon prior executive tenure as CEO and director from August 2025 through December 2025, his ongoing CTO duties since December 2025, and advisory positions at two other Archimedes Tech SPAC affiliates since February 2025. The filing notes he co-founded Superposition Venture Partners in 2020 and serves as its Managing Director, directed Product & Business Development at DeepScale from 2017 to 2019, advanced through senior partnership and vice presidential business development roles at autonomous vehicle solutions developer Cyngn Inc. from 2019 to October 2025, and previously managed a $100 million automotive semiconductor product line at Maxim Integrated. The submission further attests to zero family relationships between the incoming officer and existing directors or executives, no undisclosed selection understandings, and no reportable related-party transactions under Item 404(a) of Regulation S-K.
What changed: A Form 8-K Current Report filing by Archimedes Tech SPAC Partners III Co. announcing the commencement of separate trading for its underlying securities, submitted alongside Exhibit 99.1, a press release dated March 10, 2026, outlining the mechanical steps for unit decombination and reiterating the registrant’s corporate purpose. Per the Company’s filing and press release, no amendments have been made to the trust account, redemption calendar, extension provisions, or business combination timeline. The registration statements on Form S-1 (333-292419) and Form S-1MEF (File No. 333-292891) became effective on January 22, 2026. On March 10, 2026, the Company announced that holders may elect to separately trade the ordinary shares and warrants included in the Units on or about March 16, 2026. Each Unit consists of one ordinary share and one-fourth of one redeemable warrant. The press release states that no fractional warrants will be issued upon separation and only whole warrants will trade. Separated shares will trade under “ARCI” and warrants under “ARCIW,” while unseparated Units continue as “ARCIU.” Brokers must contact Odyssey Transfer and Trust Company, the transfer agent, to facilitate separation. Copies of the prospectus may be obtained from BTIG, LLC, located at 65 East 55th Street, New York, New York 10022, or via ProspectusDelivery@btig.com. Regarding strategy and personnel, the press release attributes the Company’s search focus to the technology industry, specifically artificial intelligence, cloud services, and automotive technology sectors. The filing is signed by Long Long, serving as Chief Executive Officer, with contact listed as (725) 312-2430, and the business/mail address provided is 2093 Philadelphia Pike #1968, Claymont, DE 19703. Why it matters: This filing does not trigger any redemption deadlines, alter the trust balance, or shift the dissolution deadline, leaving all foundational mechanics intact. It solely confirms standard post-IPO capital market administration has advanced to the point where underlying components can decouple for trading, which affects secondary market liquidity but not redemption calculations. The acknowledgment of effective registration statements and the explicit delineation of the target sectors (artificial intelligence, cloud services, automotive technology) provide transparency into the sponsor’s stated thesis while confirming the search remains in the initial phase without advancing toward a definitive agreement or closing. Executive attribution rests with CEO Long Long, who directed the disclosure through the mandated 8-K and attached press release.
What changed: Form 8-K current report and accompanying exhibits confirming the consummation of Archimedes Tech SPAC Partners III Co.'s initial public offering and private placement, including an audited balance sheet dated January 26, 2026. The company completed its IPO on January 26, 2026, issuing 27,600,000 units at $10.00 per unit ($276,000,000 gross proceeds), including the full exercise of a 3,600,000-unit over-allotment option. Concurrently, it sold 762,000 private placement units for $7,620,000. $276,000,000 of net proceeds were deposited into a U.S.-based trust account. The sponsor's outstanding $169,053 promissory note was settled immediately at closing, and the administrative support fee schedule officially commenced on January 22, 2026. Why it matters: The $276,000,000 trust balance locks the per-share redemption floor at $10.00 plus accrued interest, establishing the 24-month completion window that expires January 26, 2028. Post-offering mechanics are now fixed: $9,660,000 in deferred underwriting fees are payable only upon a successful business combination and are explicitly waivable by the underwriter if the SPAC liquidates without a deal; the sponsor's 6,900,000 founder shares permanently cleared their forfeiture conditions due to the full over-allotment exercise but remain under customary transfer restrictions; and a $20,000 monthly payout to the sponsor for administrative services begins immediately. On deal progress, the financial notes explicitly state the company has not selected a target nor initiated substantive discussions with any potential acquisition candidate. Management indicates the SPAC will focus on technology-sector businesses, while noting operating revenues will not begin until after a combination closes. The filing also catalogs broad macroeconomic and geopolitical risks—including trade tensions and regulatory shifts—as potential headwinds for target identification, without reporting any active litigation, customer contracts, or technology partnerships.
What changed: 8-K filing by a blank-check SPAC (Archimedes Tech SPAC Partners III Co.) reporting the execution of all definitive IPO agreements, the closing of the IPO, and the deposit of proceeds into trust, filed by a newly public SPAC in SEARCHING status. The SPAC completed its IPO on January 26, 2026, selling 27,600,000 units at $10.00 each for gross proceeds of $276,000,000, including full exercise of the over-allotment option. $276,000,000 was deposited into the trust account. Simultaneously, it closed a private placement of 762,000 private units to the sponsor (390,000) and BTIG (372,000) for $7,620,000. All standard IPO agreements were entered into, including the underwriting agreement, warrant agreement, letter agreement, trust agreement, registration rights agreement, private unit purchase agreements, indemnity agreements, and administrative services agreement. The company adopted its amended and restated memorandum and articles of association. Why it matters: This filing confirms that ARCI is now a funded SPAC with $276 million in trust (approximately $10.15 per share, inclusive of interest and deferred underwriting commissions before any interest). The trust value is the baseline for all future redemption calculations. The deadline for a business combination is January 26, 2028 (later of 24 months after closing or such later date approved by shareholders). The documents show sponsor and insider commitments to vote for a deal and not redeem founder/private shares; sponsor forfeits up to 900,000 founder shares if over-allotment is not fully exercised (it was). The company states it will focus on technology (AI, cloud, automotive). No target discussions have been initiated. The filing establishes the full legal framework for the SPAC's lifecycle.
What changed: SEC Form 4 insider ownership report [0001437749-26-002115] filed by Long Long, identified in the submission as a director, Chief Executive Officer, and 10% owner of Archimedes Tech SPAC Partners III Co. Per the Form 4 filing, Long Long executed an open-market purchase of 390,000 shares on 2026-01-26, resulting in a post-transaction holding of 390,000 shares. This transaction does not modify the reported trust/share value of $10.15, the redemption deadline of 2028-01-26, any extension mechanisms, or target business search progress. The filing contains no claims, projections, or disclosures regarding customers, revenue, market size, strategy, technology, partnerships, litigation, or personnel changes beyond the reporting person’s listed titles. Why it matters: Open-market accumulation by a named director and CEO reflects insider capital deployment but operates outside the SPAC’s trust account, redemption threshold calculations, and extension voting frameworks. Because the Form 4 disclosure originates exclusively from the filing submitted by Long Long and records only a standard secondary-market equity purchase—without references to subscription rights, warrant conversions, PIPE commitments, or trust redeposit arrangements—it carries no immediate mechanical impact on shareholder redemption windows, capital preservation protocols, or the 2028-01-26 deadline. Tracking such purchases provides sentiment context for sponsor conduct but does not alter the statutory redemption architecture or required milestone timelines.
What changed: Form 4 insider ownership report. According to the regulatory submission, reporting person Archimedes Tech SPAC Sponsors III LLC (identified as a 10% owner) executed an open-market purchase of 390,000 shares on 2026-01-26, resulting in a post-transaction holding of 390,000 shares. Why it matters: The acquisition tracks sponsor conduct in the secondary market while the vehicle remains in a searching phase. It does not modify the stated redemption deadline of 2028-01-26, the disclosed trust value of $10.15 per share, or any extension, conversion, or business combination mechanics. The filing contains no forward-looking assertions, target screening updates, revenue projections, customer commitments, technology disclosures, partnership terms, or litigation references; all status indicators and numerical figures originate exclusively from the Form 4 filing and the accompanying SPAC metadata header.
What changed: A prospectus (Form 424B4) for the initial public offering of 24,000,000 units of Archimedes Tech SPAC Partners III Co., a Cayman Islands exempted blank check company incorporated for the purpose of effecting a merger, amalgamation, share exchange, asset acquisition, share purchase, recapitalization, reorganization, or other similar business combination. The filing establishes the structural mechanics for the public offering and post-IPO period. Why it matters: The prospectus outlines a strategy focused on identifying targets in the artificial intelligence, cloud services, and automotive technology sectors, primarily in the United States. Management disclosures attribute prior transaction experience to the executive team and board, referencing their roles in Archimedes Tech SPAC Partners Co. (which merged with SoundHound AI in April 2022, with approximately 96% of public shares redeemed), Ackrell SPAC Partners I Co. (liquidated in August 2022), Global SPAC Partners Co.
What changed: This filing is a Form 424B4 prospectus for an initial public offering of 24,000,000 Units of Archimedes Tech SPAC Partners III Co., priced at $10.00 per Unit, consisting of one ordinary share and one-fourth of one redeemable warrant. It is filed pursuant to Rule 424(b)(4) to register securities and deliver final pricing terms for the offering expected to close January 26, 2026. The prospectus establishes the operational mechanics governing redemptions, trust administration, extension windows, and sponsor economics. Why it matters: These structures dictate liquidity floors, sponsor incentive alignment, and target viability. The mandatory extension vote paired with automatic redemption triggers creates binary outcome scenarios for public capital preservation.
What changed: A Form 3 initial statement of beneficial ownership filed on behalf of director Eric R. Ball for Archimedes Tech SPAC Partners III Co., explicitly stating that no non-derivative transactions or holdings were reported. Nothing in the SPAC’s mechanics shifted: the filing discloses zero insider equity accumulation, generates no sell-side liquidity events, leaves the trust account untouched at the stated $10.15 per share, and does not amend, extend, or otherwise interact with the January 26, 2028 business combination deadline or any redemption windows. Why it matters: For investors tracking redemption deadlines, trust value, deal progress, and sponsor conduct, this confirms Archimedes Tech III remains in its SEARCHING phase with no disclosed anchor positioning or co-investment by its director as of the January 23, 2026 filing date. The absence of reported holdings indicates that neither the sponsor nor named insiders have deployed personal capital to support a potential de-SPAC transaction, fund an extension, or align economically with public shareholders—moves that historically accompany target pipeline validation or pre-vote diligence. Governance filings remain compliant, but the exhibit contains no claims about customers, revenue, market size, strategy, technology, partnerships, litigation, or personnel beyond the director’s title and the zero-transaction notation.
What changed: SEC Form 3 insider ownership report. Chief Financial Officer Chan Kai Ming reported zero non-derivative transactions or holdings adjustments. Why it matters: This statutory update preserves baseline insider transparency without altering the issuer’s redemption mechanics, trust valuation per share, business combination deadline, or active search status. As a Section 16 disclosure, it tracks public equity reporting rather than corporate development milestones. The filing contains no figures, customer claims, revenue metrics, market-size estimates, strategic statements, technology assessments, partnership disclosures, litigation details, or additional personnel information beyond the reporting individual’s name and executive title.
What changed: A Form 3 Statement of Acquisition of Beneficial Ownership by Insiders for Archimedes Tech SPAC Partners III Co., filed on 2026-01-23 under SEC accession number 0001437749-26-001920. According to the filing, Director Daniel L. Sheehan reported zero non-derivative transactions or equity holdings. This yields no updates to the 2028-01-26 redemption calendar, no revisions to the documented $10.15 trust/share balance, and no information on extension proposals, target selection, merger pipeline progress, or sponsor fiduciary actions. The text contains no claims regarding customer agreements, revenue streams, total addressable markets, corporate strategy, technical assets, joint ventures, litigation exposure, or leadership changes. Why it matters: Though administratively routine, this submission establishes a verifiable baseline for Sheehan’s insider stake ahead of the final redemption window. For capital allocators monitoring sponsor alignment, the explicit declaration of unreported acquisitions indicates no incremental personal capital was deployed to signal deal conviction during this period. The document neither accelerates business combination milestones nor modifies trust accounting procedures, but it satisfies mandatory insider transparency requirements and prevents ambiguity regarding board-level equity positioning as the SPAC approaches its statutory termination date.
What changed: SEC Form 3 — an initial statement of beneficial ownership reporting the indirect shareholding of a corporate insider. The filing states that Director and Chief Executive Officer Long Long holds 6,900,000 shares indirectly. As a Form 3, it establishes or confirms a reporting baseline rather than documenting a recent purchase, sale, conversion, or transfer of securities. Why it matters: This disclosure monitors insider positioning and sponsor conduct while Archimedes Tech III remains in SEARCHING status. According to the Form 3 submission, Director and Chief Executive Officer Long Long holds 6,900,000 shares indirectly. This reported equity stake signals executive alignment but does not alter the redemption schedule, the stated $10.15 trust value per share, the January 26, 2028 termination deadline, or any extension procedures. The filing contains no operational projections, customer disclosures, revenue figures, market analysis, technology roadmaps, partnership agreements, or litigation assertions attributed to management or external parties. All figures correspond exactly to the text provided in the issuer’s submission.
What changed: SEC Form 3 — Insider Ownership Report. The filing submission states there are no non-derivative transactions and no reported holdings for Landen Ben, who is identified in the document as Chief Technology Officer. Because the filing records zero insider activity, it produces no adjustment to capital deployment that would affect the $10.15 per-share trust reserve, the 2028-01-26 business combination deadline, extension voting mechanics, redemption threshold calculations, or sponsor conduct. None of those procedural elements are referenced, triggered, or modified by the submission. Why it matters: According to the Form 3 filing itself, the sole substantive detail is the executive designation of Landen Ben as Chief Technology Officer. The document contains no claims regarding customers, revenue metrics, market size estimates, technology roadmaps, strategic partnerships, litigation status, or corporate strategy. With the filing explicitly attributing a zero transaction count and confirming an absence of current holdings, it eliminates insider equity movement as a near-term signaling event for deal negotiations or redemption pressures. Because no monetary figures, share counts, or conditional timelines are disclosed beyond the reporting line items, the document serves as a compliance checkpoint rather than a catalyst for tracking the redemption calendar or trust valuation movements. Source: the Form 3 filing and the issuer identification block.
What changed: SEC Form 3—insider ownership report [filing reference 0001437749-26-001926] filed January 23, 2026, documenting initial direct equity holdings by a principal stockholder. Per the Form 3 filing, Archimedes Tech SPAC Sponsors III LLC (identified as a 10% owner) holds 6,900,000 shares directly. The submission reports no adjustment to the January 26, 2028 redemption deadline, the $10.15 per share trust value, or the current SEARCHING operational status. Why it matters: This filing confirms the sponsor’s foundational 6,900,000-share placement, establishing baseline capital alignment ahead of any prospective target identification. The document contains zero assertions regarding customers, revenue, market size, strategy, technology, partnerships, litigation, or executive personnel. Mechanically, it preserves the redemption calendar at January 26, 2028 and maintains the $10.15 trust metric per public share, indicating no near-term liquidity event, extension trigger, or redemption catalyst.
What changed: A Form 3 initial beneficial ownership report and routine compliance exhibit. According to the SEC filing, Director Pai Vishwesh has executed no non-derivative transactions and maintains no non-derivative security holdings in Archimedes Tech SPAC Partners III Co. The document contains no share volumes, monetary amounts, or transaction pricing. Why it matters: This report does not alter the trust account composition, the redemption deadline, extension provisions, or merger development tracks. Because it registers a zero-balance insider position, it provides no data on sponsor funding, director alignment, or voting control shifts during the SEARCHING phase.
What changed: An S-1MEF, formally a Registration Statement filed supplemental under Rule 462(b) to register additional securities for a proposed public offering by Archimedes Tech SPAC Partners III Co. The Registrant states it is registering an additional 4,600,000 units, each comprising one ordinary share and one-fourth of one redeemable warrant exercisable at $11.50 per share. The filing incorporates the Prior Registration Statement (File No. 333-292419), initially filed December 23, 2025 and declared effective January 22, 2026, noting it becomes effective immediately upon filing. Why it matters: Because the Registrant discloses only supplemental unit registration and routine officer and counsel executions, the underlying trust valuation, redemption eligibility, and termination timeline remain unchanged from prior submissions. The explicit addition of 4,600,000 units expands the maximum gross proceeds and outstanding equity and warrant base, yet the filing provides no pricing, underwriting terms, or target pipeline details, meaning no immediate dilution events, warrant conversions, or merger votes occur.
What changed: A Form 8-A for registration of certain classes of securities pursuant to Section 12(b) of the Securities Exchange Act of 1934, filed to list units, ordinary shares, and warrants on The Nasdaq Stock Market LLC. According to the filing, signed by Chief Executive Officer Long Long on January 22, 2026, the registrant states it is registering units each consisting of one Ordinary Share and one-fourth of one redeemable Warrant, Ordinary Shares with a par value of $0.0001, and warrants for Nasdaq listing. Why it matters: For investors tracking liquidation timelines and trust mechanics, this document confirms the formal registration of the baseline listed instruments without altering the economic rights or distribution waterfalls originally outlined in the December 23, 2025 registration statement. Attributed to the registrant’s executive office, the filing establishes a static administrative record.
What changed: Amendment No. 2 to Registration Statement on Form S-1 for a new SPAC IPO — Archimedes Tech SPAC Partners III Co. (ARCI). This is a registration statement for an initial public offering of 20,000,000 units at $10.00 per unit, each unit consisting of one ordinary share and one-quarter of one redeemable warrant, with proceeds of $200 million to be deposited in trust. The company is currently searching for a target and has not selected any business combination target. This is Amendment No. 2 to the S-1, updating the prospectus with audited financial statements as of December 31, 2025, including a going concern qualification. The filing updates the dilution table reflecting a trust value of $10.00 per unit, with net tangible book value (NTBV) at maximum redemption showing $(1.08) per share (meaning public shareholders face 110.8% immediate dilution if all redeem). It also updates management changes: Long Long is now CEO, Ben Landen moved from CEO to CTO, Ming Chan became CFO. The prospectus details a 24-month completion window from the closing of this offering (no specific start date yet as IPO not closed), potential extension via shareholder vote, and mechanics for redemption at $10.00 per share. The underwriters (BTIG) have committed to purchase 250,000 private units. The sponsor (Archimedes Tech SPAC Sponsors III LLC) holds 5,750,000 founder shares purchased for $25,000. No extension proposals or merger agreements are in this filing. Why it matters: For redemption tracking: trust value is $10.00 per unit, with $200 million deposited. The 24-month clock starts only at IPO closing — no specific deadline yet. For extension: the charter allows shareholder vote to extend with redemption rights; sponsor has agreed not to propose certain amendments without providing redemption. For sponsor conduct: founder shares were purchased at $0.004 per share, creating a massive 2,500x incentive misalignment. The management team is serial SPAC operators — same team behind Archimedes I (merged with SoundHound) and Archimedes II (still searching). Of the seven SPACs this team has operated, six completed deals. However, the disclosure notes that the SPAC currently has no cash and a working capital deficit of $201,611, relying on the IPO to continue. The going concern opinion from the auditor adds risk. The team's prior deals experienced 82%-96% redemptions, which may indicate structural challenges. The filing is otherwise routine registration process for a new SPAC seeking to go public.
What changed: Amendment No. 1 to Registration Statement on Form S-1 (exhibits-only filing) for initial public offering. This exhibits-only amendment adds the final forms of the underwriting agreement, charter documents, specimen certificates, warrant agreement, legal opinions, and various material agreements (promissory note, subscription agreement, letter agreement, trust agreement, registration rights agreement, private units purchase agreement, indemnity agreement, administrative services agreement, code of conduct, committee charters, and consents). No changes to the business description, financial statements, or risk factors were made. Why it matters: The filing finalizes the contractual framework for the IPO, including the trust arrangement, sponsor lock-ups, warrant terms, and insider letter. Investors can now review the definitive terms that will govern the SPAC's operations and redemption mechanics, though no new redemption or deal timeline information is provided.
What changed: REGISTRATION STATEMENT FOR AN INITIAL PUBLIC OFFERING (S-1). This is the initial registration statement for ARCI's IPO — a new SPAC filing to register 20,000,000 units (23,000,000 if over-allotment exercised) at $10.00/unit, each unit consisting of one ordinary share and one-quarter warrant. Trust/share: $10.00 (not $10.15 — the filing states exactly $10.00 per unit will be deposited). Deadline: 24 months from closing of this offering (not a fixed date like 2028-01-26). Sponsor holds 5,750,000 founder shares purchased for $25,000 ($0.004/share). The sponsor and BTIG will purchase 580,000 private units at $10.00 each ($5.8M aggregate). The document establishes all baseline terms for the SPAC but no business combination target has been identified. Why it matters: As the inaugural S-1 for this blank-check company, it sets the trust value at $10.00/share (not $10.15 as the user's header field suggested — this is a correction), establishes a 24-month deadline from the IPO closing (not a calendar date), and discloses sponsor economics: the sponsor acquired 5.75M shares for $25,000. Management team members have ties to Archimedes II (ATII), which is still seeking a target, creating potential conflicts as Archimedes II gets priority on deal flow. The structure — 1/4 warrant per unit rather than a full warrant — is explicitly designed to reduce dilutive effect. No target is identified; no substantive discussions have occurred.
What changed: A confidential draft Form S-1 Registration Statement and Preliminary Prospectus for an initial public offering. According to the filing, the company plans to deposit $200,000,000—or up to $230,000,000 if the underwriters’ over-allotment option is exercised in full—into a U.S.-based trust account with Odyssey Transfer and Trust Company acting as trustee, initially anticipating $10.00 per public share. The registrant has 24 months from the closing of the offering to consummate an initial business combination and does not expect to seek extensions beyond 36 months. Why it matters: The filing establishes the baseline economics and governance structure before capital deployment. The prospectus warns that because the sponsor paid approximately $0.004 per founder share relative to the $10.00 public price, investors will experience immediate and substantial dilution; pro forma net tangible book value per share is projected to range from $7.59 assuming no redemptions to $(1.12) assuming maximum redemptions without over-allotment, representing up to 111.20% dilution.
In plain English
Redemption deadlinethe last day to hand shares back for cash
Set by the filing that calls the meeting. Tender after it and the company is under no obligation to pay you the trust value.
Cash in trust / trust per sharethe cash the company is holding for each public share
Filed quarterly in the 10-Q's XBRL. It earns interest between filings, so the figure on a given day is slightly higher than the last filed one — where we show that we label it an estimate.
Accession numberthe SEC's unique id for one filing
Every figure on this page carries the accession of the filing that states it, so you can open the primary document rather than trust us.