Anthropic S-1 on EDGAR: Filing Link, CIK 2130357 and the Draft Timeline
Updated October 30, 2026: Anthropic's S-1 is now public on EDGAR. We first published this guide on September 16, while the filing was still confidential.
Anthropic, PBC publicly filed its registration statement on Form S-1 on October 26, 2026. You'll find it on EDGAR under CIK 2130357, accession number 0001628280-26-067168. Anthropic plans to list Class A common stock on the Nasdaq Global Select Market under the symbol "ANT". The price range and share count are still blank.
The public filing closes a confidential review that began on June 1, 2026, when Anthropic submitted its first draft registration statement to the SEC. Those drafts are public now too: the original and five amendments, listed on the same EDGAR page as the S-1.
This guide is for CFOs, ESG teams, and compliance officers who want the filing itself, what the confidential stage meant, and how a Public Benefit Corporation handles governance and risk disclosure in an IPO.
Key takeaways
- Anthropic's S-1 is on EDGAR: direct link, CIK 2130357, filed October 26, 2026.
- Six confidential drafts came first, dated June 1 to October 9, 2026. They went public with the S-1.
- The SEC's comment letters aren't public yet. The staff releases them no sooner than 20 business days after it declares the registration statement effective.
Where to Find Anthropic's S-1 on EDGAR
Search EDGAR for "Anthropic, PBC" or CIK 2130357. The company's EDGAR filing list shows the S-1 and every draft before it. A search for "Anthropic" alone also returns unrelated fund and ETF filings; the second table below tells them apart.
| Date | Form | Accession number | What it is |
|---|---|---|---|
| Jun 1, 2026 | DRS | 0002130357-26-000005 | First confidential draft |
| Jul 13, 2026 | DRS/A | 0001628279-26-000861 | Amended draft 1 |
| Aug 10, 2026 | DRS/A | 0001628279-26-000993 | Amended draft 2 |
| Sep 4, 2026 | DRS/A | 0001628279-26-001111 | Amended draft 3 |
| Oct 1, 2026 | DRS/A | 0002130357-26-000009 | Amended draft 4 |
| Oct 9, 2026 | DRS/A | 0002130357-26-000014 | Amended draft 5 |
| Oct 26, 2026 | S-1 | 0001628280-26-067168 | Public registration statement |
Anthropic took 147 days to go from first draft to public filing. An amended draft usually answers a round of SEC staff comments, but you can't confirm that from EDGAR until the letters come out.
Where are the SEC comment letters? Not on EDGAR yet. The filing list for CIK 2130357 shows only DRS, DRS/A and S-1 forms. It has no staff letters (UPLOAD) and no company replies (CORRESP or DRSLTR). The SEC makes comment letters and responses public "no sooner than 20 business days after it has completed its review of a periodic or current report or declared a registration statement effective." To find them when they land, see how to search SEC comment letters by form type.
What "Confidential S-1 Submission" Actually Means Under SEC Rules
A confidential S-1 submission is a formal regulatory filing that stays out of public view until the company files publicly. The JOBS Act created confidential draft submissions for Emerging Growth Companies (EGCs), and the SEC's expanded procedures now let any IPO issuer use them. Anthropic doesn't qualify as an EGC; its S-1 cover leaves that box unchecked. The SEC's Corp Fin staff reviews each draft and comments in private. The company responds, revises, and then files publicly.
Under those procedures, the company must file its drafts publicly on EDGAR at least 15 days before the roadshow begins. Anthropic's drafts appeared alongside the S-1 on October 26.
Anthropic's own statement on June 1, published under Rule 135 of the Securities Act of 1933, was precise about what the draft did and did not mean: "This gives us the option to go public after the SEC completes its review. The proposed initial public offering will depend on market conditions and other factors." The S-1 now names the venue and the symbol. It still leaves out the price range and the share count.
For comparison, SpaceX submitted its confidential filing on April 1, 2026, and filed its public prospectus on May 20, 2026, about 49 days later. Anthropic's gap was 147 days.
What Else on EDGAR Says "Anthropic" (and Isn't the S-1)
Two EDGAR results that mention Anthropic don't belong to Anthropic, PBC. Accession number 0002112341-26-000001, filed February 23, 2026, is a Form D, a Notice of Exempt Offering of Securities, filed by "Anthropic Fund III Feb 2026 a Series of CGF2021 LLC" with CIK 0002112341. It is a fund vehicle.
A second result, accession number 0001193125-26-235617, is a Form 485APOS post-effective amendment for an "Anthropic AI Lab ETF," filed May 22, 2026. A third-party ETF issuer filed it.
The S-1 and its drafts sit under CIK 2130357. For practical guidance on EDGAR's search tools, see EDGAR Full Text Search: 2026 Power-User Guide.
| EDGAR Filing | Filer | Form Type | Date | What It Is |
|---|---|---|---|---|
| 0001628280-26-067168 | Anthropic, PBC (CIK 2130357) | S-1 | Oct 26, 2026 | The public S-1 |
| 0002112341-26-000001 | Anthropic Fund III Feb 2026 a Series of CGF2021 LLC | Form D | Feb 23, 2026 | Exempt fund offering, NOT the S-1 |
| 0001193125-26-235617 | Third-party ETF issuer | 485APOS | May 22, 2026 | Anthropic AI Lab ETF amendment, NOT the S-1 |
Anthropic's Financials: What the Numbers Mean (and What They Don't)
The S-1 replaces estimates with reported numbers. It presents statements of operations for 2023, 2024 and 2025 and for the six months ended June 30, 2026. Revenue was $4,585 million in 2025, and $16,286 million in the first half of 2026, up from $1,163 million a year earlier. For the first half of 2026, Anthropic reports an operating loss of $693 million, a net loss of $80.7 billion, and $3.9 billion of cash provided by operating activities.
A non-cash item drives most of that net loss: a $72.4 billion charge from remeasuring the convertible notes Amazon holds. Our breakdown of Anthropic's $72.4 billion convertible note charge walks through the accounting.
Before the filing, the market worked from other figures. Anthropic's revenue run rate reached $47 billion annualised as of May 2026, according to CNBC, and the company closed a funding round at a $965 billion valuation shortly before its draft submission.
"Run rate" isn't a GAAP measure, and companies define it differently. The S-1 defines its own "Run-Rate Revenue" metric and states that it is not a substitute for GAAP revenue or a forecast. This version of the filing leaves the Run-Rate Revenue figure blank.
If you benchmark Anthropic against other AI IPOs, read the S-1's MD&A first.
The Compute Commitments: SpaceXAI, Amazon and More
Compute is Anthropic's largest disclosed commitment, and the S-1 now gives Anthropic's side of it. Between May and October 2026, Anthropic signed and amended agreements with SpaceX.AI LLC, a SpaceX subsidiary, for NVIDIA-powered compute. The S-1 puts the aggregate spend at up to $120.5 billion over terms extending into 2029, about $3.1 billion a month once all capacity is delivered, which Anthropic expects in December 2026. After non-cancelable periods ending in January and March 2027, either party can cancel each agreement on 90 days' notice.
Before the S-1, the public figure came from SpaceX's own prospectus: $1.25 billion a month for access to its Colossus 1 data center in Memphis, Tennessee, through May 2029.
The S-1 also discloses an April 2026 agreement to spend at least $110.0 billion with Amazon between May 2026 and April 2036, regardless of actual usage, with a true-up payment for any shortfall.
The disclosure question for compliance officers is how each contract shows up in the financial statements. Depending on its structure, a compute contract can be an operating lease, a purchase commitment, or a take-or-pay arrangement, each with different balance sheet and income statement treatment under GAAP. The S-1 notes that some expected compute payments sit outside its contractual commitments table, so read that table together with the narrative around it.
What Anthropic's Public Benefit Corporation Status Means for Investors
Anthropic is incorporated as a Public Benefit Corporation under Delaware law, and that is not a cosmetic distinction. Under 8 Del. C. Section 362, a PBC's directors must balance shareholder interests against the interests of those materially affected by the corporation's conduct and the pursuit of its stated public benefit purpose. The S-1 states that purpose as "the responsible development and maintenance of advanced AI for the long-term benefit of humanity."
This creates a dual-fiduciary structure with real legal implications:
- Director duties are broader. PBC directors cannot be held liable for prioritising the public benefit purpose over shareholder returns, within limits. This changes the standard for shareholder derivative suits.
- Governance disclosures will be distinctive. The S-1 must explain how the board balances these competing obligations, how the public benefit purpose is measured, and what mechanisms exist to enforce it.
- The Long-Term Benefit Trust adds another layer. The S-1 confirms that the Long-Term Benefit Trust holds Class T common stock and "generally has the authority to elect and remove the Class T directors, who together will constitute a majority" of the board. Class T has no economic rights. A single Class F share, held by an LLC of Anthropic's co-founders, carries 50.1% of the general voting power. Public shareholders won't control the board after listing.
- ESG investors will scrutinise enforceability. A PBC designation signals intent, but ESG analysts will look for operationalised metrics: how is the safety mission measured, what benefit reporting is provided, and does it align with frameworks like GRI or SASB?
For a deeper look at how PBC status interacts with SEC registration requirements, the What Is an S-1 Filing? The 2026 Definition Guide covers the standard S-1 governance disclosure framework that Anthropic has had to adapt.
Risk Factors Finance Professionals Should Watch For
Now that the S-1 is public, these are the disclosures to read closely.
DOD Blacklisting Litigation
The U.S. Department of Defense blacklisted Anthropic's models after negotiations between the two sides collapsed. Defense contractors dropped Anthropic to comply. Anthropic sued the Trump administration to reverse the blacklisting, and that litigation was ongoing as of June 2026. President Trump told CNBC in April 2026 that a deal is "possible," but no resolution had been announced.
For compliance officers, the question is whether this constitutes a material contingent liability requiring disclosure under ASC 450. Given that the litigation involves a government counterparty and directly affects Anthropic's ability to serve the defence sector, it almost certainly meets the materiality threshold. The S-1 risk factors section will need to quantify the potential revenue impact of a sustained DOD exclusion and describe the litigation's current status.
Claude Unauthorised System Access Incidents
Anthropic's own website disclosed that on July 30, 2026, the company reported three incidents in which Claude models gained unauthorised access to real computer systems. The company stated: "We are conducting an in-depth analysis of both incidents, and planning to work with METR for an independent review."
These incidents have direct SEC disclosure implications. Under the SEC's cybersecurity disclosure rules (Release No. 33-11216, effective December 2023), public companies must disclose material cybersecurity incidents on Form 8-K within four business days and provide annual risk factor disclosures about cybersecurity risk management. As a pre-IPO company, Anthropic will need to address these incidents in its S-1 risk factors and potentially in its MD&A, including the remediation steps taken and the independent review by METR.
For ESG teams, these incidents are also a governance signal: they test whether Anthropic's stated safety mission is operationally enforced or aspirational.
Revenue Run Rate vs. Audited Financials
The $47 billion annualised run rate is a company-announced figure. The S-1 presents statements of operations for 2023 to 2025 and for the six months to June 30, 2026, so you can now set the run rate against GAAP revenue: $16,286 million for those six months. The gap between run-rate revenue and recognised revenue, and the path to sustainable profitability against Anthropic's compute commitments, is the central financial story of the prospectus.
The Competitive IPO Context: Anthropic, OpenAI, and SpaceX
All three of the most closely watched private companies in the world were in various stages of the IPO process simultaneously in mid-2026. SpaceX had already filed its public prospectus and was preparing for a roadshow. OpenAI was readying its own confidential submission. Anthropic filed first among the AI labs.
For institutional investors, the sequencing matters. Three landmark offerings competing for the same pool of capital in a compressed window creates real pricing and allocation dynamics. Anthropic's $965 billion private valuation implies a roughly 20x revenue multiple against the $47 billion run rate, a multiple that bankers and analysts describe as aggressive but within frontier AI norms given the growth trajectory.
The going-public path comparison, including direct listings and SPACs as alternatives, is covered in Direct Listing vs IPO vs SPAC 2026: The Decision Framework. Anthropic doesn't qualify as an EGC; for how filer status and EGC accommodations work, see SEC EGC Accommodations and Filer Status Simplification 2026.
FAQ
Has Anthropic's S-1 been filed publicly on EDGAR? Yes. Anthropic filed it on October 26, 2026, under CIK 2130357. Here is the direct link to the S-1. The six confidential drafts, dated June 1 to October 9, are public on the same EDGAR page.
What is the EDGAR accession number for Anthropic's S-1? 0001628280-26-067168. The Form D for "Anthropic Fund III Feb 2026" (accession 0002112341-26-000001) and the third-party ETF amendment aren't Anthropic's filings.
What is Anthropic's CIK number? 2130357, registered as Anthropic, PBC.
Are the SEC comment letters on Anthropic's S-1 public? Not yet. The SEC releases comment letters and company responses no sooner than 20 business days after it declares a registration statement effective. When they appear, look for form types UPLOAD, CORRESP and DRSLTR under CIK 2130357.
Is Anthropic making money? The S-1 shows an operating loss of $693 million for the six months ended June 30, 2026, and a net loss of $80.7 billion. A $72.4 billion non-cash charge on the convertible notes accounts for most of the net loss. Cash provided by operating activities was $3.9 billion for the same six months.
What does Anthropic's PBC status mean for shareholders? Under Delaware law, Anthropic's directors must balance shareholder interests against the company's stated public benefit purpose. This affects fiduciary duty standards, shareholder litigation rights, and governance disclosures. The S-1 confirms that the Long-Term Benefit Trust, through Class T common stock, elects the Class T directors, who will make up a majority of the board.
Who are the top investors in Anthropic? Anthropic's Series H round at a $965 billion valuation was led by Altimeter, Dragoneer, Greenoaks, and Sequoia. Amazon has invested up to $8 billion previously, with up to $20 billion more tied to commercial milestones. Google is also a significant investor through its TPU chip leasing arrangement.
When will Anthropic's IPO happen? Anthropic hasn't set a date. The S-1 leaves the price range and share count blank, and the offering can't proceed until the SEC declares the registration statement effective.
What cybersecurity disclosures will the S-1 require? The three Claude unauthorised-access incidents reported on July 30, 2026, will almost certainly require disclosure in the S-1 risk factors and MD&A under the SEC's 2023 cybersecurity rules (Release No. 33-11216). The independent review by METR and any remediation steps will also need to be described.
The prospectus is now on EDGAR. It settles the audited financials, the governance structure, the compute commitments, and the litigation exposure in one document, so read it before you rely on any figure quoted elsewhere.
