Michael Mathison

Rob Brown

Jeffrey Grampp

Justin Smith

Michael Matheson

- **374Water Inc. (SCWO)** appointed current board member **Stephen J. Jones** as its Interim President and Chief Executive Officer, effective **October 8, 2025**, succeeding **Chris Gannon**.  **[933972_00191f92447340e1a363a1b86c1b8c4d_0]** 
- Mr. Jones, who joined 374Water's Board in **June 2025**, previously served as President and CEO of **Covanta Holding Corporation** and will lead the company's commercialization efforts and the search for a permanent CEO.  **[933972_00191f92447340e1a363a1b86c1b8c4d_0]** 
- His compensation for the interim role includes a base salary of **$1.00** and a stock option grant.  **[933972_00191f92447340e1a363a1b86c1b8c4d_0]** 
- Mr. Jones is scheduled to provide a strategic update during the third quarter results conference call on **November 12, 2025**.  **[933972_00191f92447340e1a363a1b86c1b8c4d_0]** **[933972_00191f92447340e1a363a1b86c1b8c4d_1]**

374Water Appoints Stephen J. Jones as Interim President and CEO

- 374Water is expanding its business model to include **Waste Destruction Services (WDS)**, leveraging its AirSCWO technology to eliminate PFAS, hazardous, and non-hazardous wastes, and is actively bidding on **tens of millions of dollars** in WDS contracts.  **[933972_8526a555be154deb9f04975abecbf059_0]** **[933972_8526a555be154deb9f04975abecbf059_1]**  The company intends to establish multiple WDS operations in the United States over the next **12 to 18 months**.  **[933972_8526a555be154deb9f04975abecbf059_1]** 
- The WDS business model offers flexible access, pay-as-you-go service, and a scalable platform, with each AirSCWO unit designed to process **1-30 wet tons per day**.  **[933972_8526a555be154deb9f04975abecbf059_0]**  The potential annual revenue unit economics for different AS units are as follows  **[933972_8526a555be154deb9f04975abecbf059_1]** :

| Metric | AS 1 | AS 6 | AS 30 |
|---|---|---|---|
| Revenue ($USD) | **$2M+**  **[933972_8526a555be154deb9f04975abecbf059_1]**  | **$3M - $5M**  **[933972_8526a555be154deb9f04975abecbf059_1]**  | **$12M - $20M**  **[933972_8526a555be154deb9f04975abecbf059_1]**  |

- The deployment of 374Water's AirSCWO 6 system to the Orange County Sanitation District (OC San), previously scheduled for late September 2025, has been postponed due to mutually agreed-upon technology and infrastructure upgrades, supply chain delays, and delays in receiving required permits.  **[933972_8526a555be154deb9f04975abecbf059_1]**  The company now hopes to ship the system in **Q4 2025**, aiming for a **late Q4 2025 or early Q1 2026 start-up**.  **[933972_8526a555be154deb9f04975abecbf059_2]**

374Water Provides Waste Destruction Services and AirSCWO Deployment Updates

- **374Water Inc.** announced recent **open-market stock purchases** by Company insiders, including Board members and senior management.  **[933972_588ac77957c64ba6891356e970b8e4b9_0]** 
- These purchases underscore the Company's confidence in its vision and the significant opportunities for its **AirSCWO ("AS") technology**.  **[933972_588ac77957c64ba6891356e970b8e4b9_0]** 
- Management believes there is a **significant disconnect** between the current stock price and the value the Company can deliver, and these purchases align them with all shareholders.  **[933972_588ac77957c64ba6891356e970b8e4b9_0]**

374Water (SCWO)