About Fathom
Fathom Water sells custom-engineered water projects to advanced technology facilities in the United States. The company's contact form asks visitors to pick a market: semiconductors and microelectronics, biotech and pharmaceuticals, batteries and critical minerals, or aerospace and defense. Fathom uses FathomOS, an in-house AI platform that combines AI agents, digital twins and coordination tools, in its project work. The company groups its offer under five headings: FathomOS, QuantumPUR, American Supply, Resource Recovery and Optimized Modular Design.
Nate Haralson is chief executive officer. Ned Menninger is chief financial officer, and Katie LaFranchi is chief human resources officer. The leadership team draws on decades of experience at companies such as GE, Siemens, Microsoft, Google and Amazon. The process engineering team averages 25 years of tenure from water and semiconductor firms such as Intel, Micron, Veolia, DuPont, Xylem, SUEZ and Gradiant. Fathom is based in Kirkland, Washington.
Funding Rounds (SEC Form D)
| First sale | Filed with SEC | Amount sold | Investors | Avg. check | Terms | Filing |
|---|---|---|---|---|---|---|
| Oct 16, 2026 | Oct 28, 2026 | $4,299,999of $5.3M target | 10 | $429K | Equity, Securities on exerciseRule 506(b) | Form D ↗ |
| Jul 21, 2025 | Aug 5, 2025 | $350,000of $1.0M target | 2 | $175K | OptionsRule 506(b) | Form D ↗ |
| Total, two offerings | $4,649,999 | |||||
First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.
Why Investors Backed Fathom
Fathom Water sells custom-engineered water projects to advanced technology facilities in the United States. Fathom's case is that software built in-house makes these projects faster and cheaper to propose, design and run. The core of that software is FathomOS, an AI platform with agents and digital twins. Nate Haralson leads the company as chief executive officer.
The problem it targets
Fathom's view is that America's largest manufacturing build-out in a century depends on water. It argues that outdated designs, foreign supply and archaic execution cost U.S. advanced technology facilities billions of dollars.
What the product does
FathomOS is the AI platform behind Fathom's project work. Fathom's claim is that it makes its project managers and engineers more productive and cuts risk and cost. Fathom splits the benefit into three stages. Develop smarter means 50% better proposal time and cost. Design smarter means 20% better CAPEX and schedule. Operate smarter means 20% better OPEX.
Progress so far
H2O Innovation announced in a Business Wire release on December 2, 2025 that it was teaming up with Fathom Water for the semiconductor market. Beyond its three leaders, Fathom's team includes four process engineers, one person in marketing and one in product and IT.
We wrote this summary from public statements by Fathom and its investors. It is not investment advice.
Fathom in the News
Leadership Team
Executive officers and directors listed on Fathom's Form D filed Oct 28, 2026.
