Anthropic has taken a significant step toward its public market debut by filing its S-1 registration statement on Monday. The document provides a detailed look at the company's financials, but notably leaves the IPO price range and share count blank, a common practice for initial filings.
The most concrete valuation data comes from the Series H financing, which closed in Q2 2026. According to the S-1, Anthropic sold 77.6 million Series H-1 and 33.1 million Series H-2 preferred shares at $589.0095 each, generating gross proceeds of $65.2 billion. This is the last price set by private investors and is confirmed in the filing.
However, a key detail affects how that price translates to common shares. On September 17, 2026, Anthropic executed a 10-for-1 forward split of its Class A and Class N common stock, and adjusted the conversion rate of its preferred stock accordingly. As a result, each Series H preferred share now converts into ten common shares, putting the effective price at roughly $58.90 per common share on a post-split basis.
Media reports from IFR and Reuters, citing sources familiar with the matter, suggest that IPO valuation discussions are in the $1.5 trillion to $2 trillion range. However, Anthropic has not confirmed these figures, and they should be treated as speculative until the company discloses an official price range in an amended S-1.
The blank price range is typical for a first public filing. Companies often wait until closer to the roadshow to set a range, with reports suggesting that could happen around the week of November 9. Two factors will influence the final per-share value: the conversion of convertible notes, including those held by Amazon, into Class N stock at the IPO, and the settlement of restricted stock units. Both will increase the total share count, potentially diluting the value of each share.
Investors should be cautious about treating reported IPO valuations as confirmed. The Series H financing provides a verified reference point, but the $1.5 trillion to $2 trillion figure remains unverified. The conversion of convertible notes and RSU settlements could also affect the final share count and per-share price, so it's essential to monitor these adjustments.
Anthropic shares are not yet publicly traded. Investors will need to wait until the company completes its IPO and lists on a stock exchange. In the meantime, the amended S-1 filing will be the first official source for the proposed price range and share count, offering a clearer basis for assessing the company's public-market valuation.
As the IPO process unfolds, market participants will be watching for share-count adjustments and the amended S-1, which will provide the first official basis for valuing Anthropic in the public market.
This article is for informational purposes only and does not constitute financial advice.
