The Altman Network

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Persons of Interest and Profiles

Sam Altman Self-Dealing & Conflict Architecture

AltC Acquisition Corp. (the SPAC)

AltC Acquisition Corp. was the blank-check shell company (SPAC) Sam Altman co-founded with veteran dealmaker Michael Klein in 2021. It existed to do one thing: raise public money against Altman’s and Klein’s reputations, then merge with a private company and hand its stock-market listing over. Its single deal was the May 2024 merger with Oklo Inc., the advanced-nuclear company Altman had chaired since 2015 — making AltC the vehicle through which Altman took his own portfolio company public. [1][2] AltC is also where the inaccurate “Chairman of Y Combinator” credential appeared in SEC filings (see the chairman-claim page), and its EDGAR identity is the structural thread that links Altman’s chairman claim (2021) to his Oklo board resignation (2025). [3]

Formal profile

Entity: AltC Acquisition Corp. Type: Special-purpose acquisition company (blank-check). EIN: 86-2292473. SEC CIK: 0001849056. Former exchange ticker: NYSE: ALCC. Principal office: 640 Fifth Avenue, 12th Floor, New York, NY 10019 (shared with Michael Klein’s operations). [3][4]

Incorporation and naming (the first link in the obscurity chain). The shell was incorporated in Delaware on February 1, 2021 as “Churchill Capital Corp VIII” — one of Klein’s serially numbered Churchill blank-check vehicles — and renamed “AltC Acquisition Corp.” on February 24, 2021. [5] This is worth stating precisely because it is the first of several name changes in this lineage: the public company that exists today (Oklo Inc., NYSE: OKLO) traces its Delaware charter back to this Churchill VIII → AltC inception, not to the original 2013 Oklo founding. [5]

Founders and roles.

  • Sam Altman — co-founder; served as Chief Executive Officer and a director from July 2021. (In AltC’s own filings, his bio described him as “Chairman of Y Combinator” — a title that was announced but never formally manifested, and that YC’s own communications director later confirmed “never happened.” See the chairman-claim page for the full recalibrated analysis.) [2][3]
  • Michael Klein — co-founder and Chairman of the Board; a former Citigroup executive and serial SPAC operator behind Churchill Capital Corp I–VII and CF Finance Acquisition Corp. Klein’s role across his SPACs is consistent: “the capital-markets operator who brings public-listing machinery to a founder bringing the asset.” [2][4]
  • Other named officers/directors included Jay Taragin (CFO), and directors Frances Frei, Allison Green, Peter Lattman, and John L. Thornton. [3]

The IPO. AltC priced its IPO on July 7, 2021, initially upsized from 40 million to 45 million shares at $10.00 per share ($450 million). Underwriters subsequently exercised their over-allotment option, bringing the total to 50 million shares and $500 million placed in trust with Continental Stock Transfer & Trust Company. Trading commenced on the NYSE under “ALCC” on July 8, with the offering closing July 12, 2021. Additionally, 1,450,000 private placement shares were sold to AltC Sponsor LLC at $10.00 per share ($14.5 million). Citigroup, J.P. Morgan, Goldman Sachs, and BofA Securities acted as joint bookrunners. Weil, Gotshal & Manges LLP served as issuer’s counsel. [2][9]

The purpose: Oklo. AltC’s stated thesis was to combine “Altman’s technology thought leadership and deep industry relationships with Klein’s public-markets expertise.” [1] In practice, the target was a company Altman was already deeply entangled with: Oklo Inc., an advanced fast-fission nuclear company (Aurora Powerhouse reactor) that Altman had chaired since 2015 and seeded through Hydrazine Capital. The merger was announced July 11, 2023, approved by AltC stockholders, and closed May 10, 2024, valuing Oklo at ~$850 million and delivering ~$306 million in proceeds. On close, AltC’s NYSE listing became Oklo Inc. (NYSE: OKLO). [1][6] Because of his dual role (SPAC CEO + Oklo chairman), Altman was reported to have recused himself from the merger negotiations. [7]

What AltC became. AltC the SPAC no longer exists as a separate operating entity — it is Oklo Inc. now, retaining the same SEC registrant identity (CIK 0001849056). That continuity is why filings as different as the 2021 chairman-claim S-1 and the April 2025 Oklo board-resignation 8-K appear under one EDGAR number. (Full Oklo history, including its pre-SPAC name changes, is covered in the Oklo profile; the original technology company’s renaming from “UPower Technologies” is covered in the U-Power Technologies profile.) [3][8]

Nodes of interest

N-A · One person wore five hats for the same company. Altman was, in sequence and sometimes simultaneously, the YC president who recruited Oklo into YC (2014), an early/seed investor (Hydrazine, ~2015), Oklo’s board chairman (2015–2025), the founder and CEO of the SPAC that took Oklo public (AltC, 2021–2024), and — through OpenAI — a prospective major energy customer of Oklo (the reason he later resigned the chairmanship). A single individual occupying the recruiter, investor, chairman, underwriter-sponsor, and customer roles for one company is the core conflict-of-interest structure this profile documents. [1][2][7]

N-B · The EDGAR-identity bridge between Prong 1 and Prong 3. CIK 0001849056 is shared: it carries both the 2021 S-1 with the inaccurate YC-chairman claim and the April 22, 2025 8-K recording Altman’s resignation as Oklo chairman. Anyone querying that one registrant number finds the chairman-claim origin and the board-resignation pattern under the same roof — a rare clean structural link across two otherwise separate threads of the investigation. The Musk v. Altman federal complaint (4:24-cv-04722) names entities across the full OpenAI hierarchy, and the corporate structure paragraphs (¶¶70-76) confirm the formation dates and control chain that flow through this same CIK. [3][12]

N-C · The naming lineage starts here. AltC is link two in a four-plus-step name chain (UPower Technologies → Oklo [legacy private] → Churchill Capital Corp VIII → AltC Acquisition Corp → Oklo Inc. [public]). The Delaware charter of today’s public Oklo dates to the February 2021 Churchill/AltC inception, not the 2013 Oklo founding — a discontinuity that makes the corporate history genuinely hard to follow without knowing every prior name. (See the SPAC concept page for why this obscurity is a structural feature, not a bug.)

N-D · Klein is a repeat operator, not a one-off. Klein has run at least Churchill Capital Corp I through VII plus CF Finance Acquisition Corp before AltC (which began life as “Churchill Capital Corp VIII”). Across this franchise, Klein raised over $6 billion in SPAC capital: Churchill III ($1,100M → MultiPlan), Churchill IV ($2,070M → Lucid Motors), Churchill V ($500M), Churchill VI ($552M), Churchill VII ($1,380M), plus AltC ($500M → Oklo). The serial, numbered nature of these shells is itself part of why SPAC lineages are hard to trace — many near-identically-named blank-check entities, each merging into a differently-named operating company. [4][5][9]

N-E · The Churchill III / MultiPlan precedent. Klein’s Churchill Capital Corp III ($1,100M) merged with MultiPlan in October 2020. The resulting stockholder litigation (In re MultiPlan Corp., Del. Ch., C.A. No. 2021-0258) produced the first Delaware Chancery decision applying “entire fairness” review to a de-SPAC merger (MTD denied, January 3, 2022). Settlement: $33,750,000. The court noted Klein’s interests were worth ~$230 million at closing while public shareholders bore the post-disclosure loss. The SPAC machinery that built the Oklo deal came from an operator with a documented investor-harm precedent and the generic SPAC promote conflict (~20% founder shares for nominal cost). [4][10]

N-F · The FY2023 10-K internal inconsistency. AltC’s FY2023 10-K (filed March 29, 2024) simultaneously describes Altman as “the Chairman of Y Combinator” in the Item 1 Business narrative (present tense, uncorrected) and as having “previously served” as YC chairman in the Item 10 director bio (corrected to past tense). The inaccurate credential was not cleanly removed; it was made internally inconsistent within the same filing — more than four years after YC’s own communications director corrected the record. [3][11]

Unanswered questions

  • Who drafted the “Chairman of Y Combinator” line in AltC’s S-1 bio? Confession-dependent; AltC’s counsel or Altman would have to say. (See chairman-claim page.)
  • What were the exact terms of Altman’s recusal from the AltC↔Oklo negotiation? Reported, but the documentary basis (board minutes, recusal memos) isn’t public.
  • Did any AltC sponsor economics (founder shares / promote) flow to Altman or his vehicles on the Oklo close, and in what amount? Researchable via the merger proxy and Altman’s Schedule 13D (filed ~Dec 2024) — flagged but not fully pulled.
  • Why “AltC” / why rename Churchill VIII at all? A cosmetic rebrand from a numbered Klein shell to an Altman-branded one — worth noting as the moment the vehicle’s public identity was attached to Altman’s name specifically.
  • Does the OpenAI Inc → OpenAI Foundation rename affect the founding Certificate’s constraints? The original December 8, 2015 Certificate of Incorporation states the corporation’s property is “irrevocably dedicated” to charitable purposes, and that “the corporation shall not have any members.” But the TY2024 Schedule O describes a self-electing board where “the members of the Organization are the individuals that serve from time to time as the directors.” Was this structural change voted in, and by whom — given the founding document prohibited members? Does the rename to “Foundation” create an argument that the new entity is not bound by the old Certificate? This pattern of renaming to cut the investigative trail appears across the study (SummerSafe → OpenAI LP, Y Combinator Research → Open Research Lab, Churchill VIII → AltC → Oklo). [12]

Why it matters — relevancy to the study

AltC is the hinge of the whole Altman corporate-network study. It is where the reputational credential (the chairman claim) was deployed in a capital-raising document; it is the mechanism that converted a private Altman-chaired company into public stock; and its EDGAR identity ties the earliest thread (the 2021 chairman claim) to a later one (the 2025 Oklo resignation pattern). It is also the cleanest single illustration of the SPAC structure’s transparency problem: a blank-check shell, named after one founder, born from another founder’s numbered series, that dissolves into a differently-named operating company — leaving a corporate trail that is technically public but practically very hard to follow. [1][3][5]

Self-dealing / ethical-concern note (for the concerns page and SPAC concept page)

Analytical framing, labeled as such.

AltC concentrates two distinct ethical concerns this study tracks.

First, the conflict-of-interest stack. Ordinary deal-making expects some separation between the person raising public money, the person valuing the target, and the person who owns the target. AltC collapsed those: Altman sponsored the SPAC and chaired the company it bought and (via OpenAI) was a prospective customer of that company. Recusal from the negotiation is the conventional mitigation, but recusal does not undo the underlying structure — the same person stood on multiple sides of one transaction, and benefited at several of them. This is the conflict-of-interest pattern that recurs across the study (Oklo, Helion); AltC is where it is most fully assembled in one vehicle.

Second, the SPAC structure itself as an obscurity engine. A SPAC lets the public invest in a company that does not yet exist, then resolves into an acquisition whose trail is deliberately layered: a numbered shell (Churchill VIII) becomes a founder-branded shell (AltC) that merges with a legacy private company (Oklo, itself formerly UPower) and takes its name and listing. Each step is individually legal and individually has a plausible rationale (sponsor branding, charter convenience, target naming). But in aggregate the structure produces a corporate genealogy that ordinary investors — and even researchers — cannot follow without already knowing the final name. When name changes and shell mergers make a company’s own history this hard to reconstruct, transparency is the casualty, whether or not obscurity was the explicit intent. The reasonable reform question (taken up on the SPAC concept page) is whether the same capital-formation goal could be met with a structure that preserves a clear, continuous paper trail — e.g., pooling investor money in a disclosed trust that purchases a named company in a single traceable transaction, rather than a chain of renamed shells.

Sources

  1. [Archive] “Oklo, an Advanced Fission Technology Company, to Go Public via Merger with AltC Acquisition Corp.,” BusinessWire, July 11, 2023 — AltC co-founded by Altman and Churchill Capital July 2021; thesis; Altman CEO of AltC and Chairman of Oklo since 2015; ~$850M valuation.
  2. [Archive] AltC Acquisition Corp Form S-1, SEC EDGAR CIK 0001849056, filed March 15, 2021 — IPO filing; team led by co-founder Sam Altman; Altman bio describing him as “co-founder and CEO of OpenAI, and the Chairman of Y Combinator.”
  3. [Archive] AltC Acquisition Corp Form 10-K FY2022 (filed March 31, 2023; CIK 0001849056; EIN 86-2292473; 640 Fifth Avenue, 12th Floor, NY) — officer/director table (Klein Chairman; Altman CEO & director); bundled “Chairman of the board of directors of Y Combinator, Helion Energy, Inc. and Oklo, Inc.”
  4. [Archive] The Altman Network Study, prior-session findings — Michael Klein at 640 Fifth Avenue, 12th Floor, NY; M. Klein & Company / M. Klein Associates; serial SPAC operator (Churchill Capital Corp I–VII, CF Finance Acquisition Corp); MultiPlan litigation precedent.
  5. [Archive] AltC Acquisition Corp Form 424B4 / registration record — incorporated in Delaware as “Churchill Capital Corp VIII” on February 1, 2021; renamed “AltC Acquisition Corp.” on February 24, 2021; Klein franchise sizes documented.
  6. [Archive] “AltC Acquisition Corp. Stockholders Approve Business Combination with Oklo,” PR Newswire, May 7, 2024 — stockholder approval; ~$306M gross proceeds; Altman listed as “chairman” of Oklo and CEO of AltC; merger closed May 10, 2024.
  7. [Archive] “Sam Altman-backed nuclear reactor firm Oklo to go public via SPAC,” DataCenterDynamics — Altman “recused himself” from negotiations given dual Oklo/AltC roles.
  8. [Archive] PrivCo / CB Insights / Wikipedia “Oklo Inc.” — Oklo Inc. “formerly known as UPower Technologies,” founded July 3, 2013 by Jacob DeWitte and Caroline Cochran; covered in full in the Oklo and U-Power Technologies profiles.
  9. [Archive] AltC Acquisition Corp Form 8-K (filed July 2021) — $500,000,000 placed in trust with Continental Stock Transfer & Trust Company; 50,000,000 public shares at $10.00; private placement of 1,450,000 shares to AltC Sponsor LLC ($14.5M); over-allotment exercised from initial 45M-share pricing ($450M): https://www.sec.gov/Archives/edgar/data/0001849056/000110465921091230/tm2121987-1_8k.htm
  10. [Archive] In re MultiPlan Corp. Stockholders Litig., C.A. No. 2021-0258-LWW (Del. Ch. Jan. 3, 2022) — first Delaware Chancery “entire fairness” review of a de-SPAC; MTD denied; settlement $33,750,000; Klein interests ~$230M at closing.
  11. [Archive] AltC Acquisition Corp Form 10-K FY2023 (filed March 29, 2024; CIK 0001849056) — Item 1 retains “the Chairman of Y Combinator” (present tense); Item 10 bio corrects to “previously served” — internal inconsistency within the same filing.
  12. [Archive] Musk v. Altman, No. 4:24-cv-04722 (N.D. Cal.) — federal complaint filed August 5, 2024; entity hierarchy paragraphs 4-11 confirm formation dates; AltC/Oklo EDGAR continuity under CIK 0001849056; trial verdict May 18, 2026 (SOL dismissal, substantive claims not adjudicated).

Change Log

This log records only changes to previously-stated claims, not initial additions.

#ElementBeforeAfterReason
1IPO amount“approximately $450 million”$450M priced (45M shares), upsized to $500M placed in trust (50M shares after over-allotment)AltC 8-K confirms $500,000,000 in trust. Both numbers are correct at different stages; trust amount is the final figure.
2Chairman claim language“a title YC has said he did not hold”“a title that was announced but never formally manifested, and that YC’s own communications director later confirmed ‘never happened’”Aligns with recalibrated chairman-claim page.
3Klein SPAC franchise“at least Churchill Capital Corp I through VII” (no sizes)Full franchise with dollar amounts: $6B+ across serial vehiclesAltC Form 424B4 documents all Churchill IPO sizes.
4N-E (MultiPlan)AbsentAdded: Churchill III → MultiPlan litigation precedent, $33.75M settlement, first DE Chancery “entire fairness” SPAC reviewFrom Churchill Capital profile and Delaware court records.
5N-F (FY2023 inconsistency)AbsentAdded: FY2023 10-K has “Chairman of Y Combinator” (present tense, Item 1) alongside “previously served” (past tense, Item 10) in the same filingVerified from EDGAR FY2023 10-K.
6Sources8 citations12 citationsAdded: 8-K trust confirmation [9], MultiPlan litigation [10], FY2023 10-K [11], Musk complaint [12].