Arthur Ai, Inc.
Other · New York, New York
Arthur Ai, Inc. is a other company based in New York, New York, incorporated in 2019. It has raised at least $95.3 million across 3 known rounds, of which $50.6 million was reported to the SEC on 2 Form D filings, most recently in 2026.
Arthur unites security, finance, and the teams shipping AI on one control plane for AI you can trust. Measure, monitor, and govern enterprise AI at scale.
| Date | Round | Amount | Raised to date | Lead investor | Source |
|---|---|---|---|---|---|
| 2026-08-10 | — | $2.7M | $95.3M | SEC Form D | |
| 2022-11-02 | — | $32.9M | $92.6M | SEC Form D | |
| 2022-09-27 | Series B | $42.0M | $59.7M | Round pagesource ↗ | |
| 2020-11-17 | — | $17.7M | $17.7M | SEC Form D |
SEC rows are Form D filings, where the amount is what was actually sold and amendments update a round rather than adding one. Press rows are split between company-issued releases or wires and editorial or third-party coverage. The total is therefore a floor: a round nobody reported is a round we cannot see. A buyout or control change appears in the timeline but is never added to the total: that money goes to shareholders, not into the company.
Form D is the notice a company files with the SEC when it sells securities without registering them. It reports the amount sold, not a valuation. Figures here are what the filing says. Where a filing is silent, the field is left blank rather than estimated. “Total raised” adds press-reported rounds that never appear in a filing, so it is a floor rather than an audited sum: press amounts are the figures the company announced, and a round nobody reported is a round we cannot see.