# Riley Reese

> Riley Reese is the CEO and co-founder of ARRIS Composites, a Berkeley-based advanced manufacturing company that invented Additive Molding - a patented process combining 3D printing and compression molding to produce continuous carbon-fiber composite parts at commercial scale. A materials scientist who once built biodegradable heart tissue scaffolds at UC Berkeley, Reese pivoted that same obsession with fiber architecture into a $157M-funded company whose technology now shows up in Brooks running shoes, Skydio drones, and bicycle spokes. He previously co-founded AREVO, worked at medical device giant Stryker, and led additive manufacturing programs in Amsterdam at TNO - before returning to Berkeley to tackle what he calls 'a new manufacturing category.'

- **Role:** CEO and Cofounder at ARRIS Composites
- **Organizations:** ARRIS Composites, AREVO, Stryker, TNO, University of California Berkeley
- **Nationality:** American
- **Education:** Master of Science, Materials Science and Engineering, University of California, Berkeley, Bachelor of Science, Bioengineering and Materials Science and Engineering, University of California, Berkeley
- **Known for:** Co-invented Additive Molding, a patented manufacturing process combining 3D printing and compression molding for continuous fiber composites, Filed over 20 patents in 3D printing and composites, Raised $157M+ in total funding for ARRIS Composites across multiple rounds including $88.5M Series C

## Career timeline

- **2012-2016** — UC Berkeley - BS and MS in Bioengineering and Materials Science; graduate research focused on 3D printing of biodegradable heart tissue scaffolds
- **2015-2016** — Stryker - failure analysis and product design for medical devices
- **2016-2017** — AREVO - co-founded additive manufacturing company introducing 3D-printed continuous fiber composites; led R&D and product architecture
- **2016-2017** — TNO (Amsterdam) - led innovation program management for additive manufacturing at Dutch research commercialization organization
- **2017** — Co-founded ARRIS Composites in Berkeley with Ethan Escowitz and Erick Davidson
- **2017-2022** — Chief Technology Officer at ARRIS - led R&D, materials, and software teams
- **2021-11** — ARRIS closes $88.5M Series C funding round led by XN, bringing total funding to $157M+
- **2022-06** — Appointed Chief Executive Officer of ARRIS by Board of Directors
- **2024** — ARRIS wins BIG Innovation Award for 4th consecutive year; launches MTO carbon fiber bicycle spokes and AURORRA consumer insole brand

## Achievements

- Co-invented Additive Molding, a patented manufacturing process combining 3D printing and compression molding for continuous fiber composites
- Filed over 20 patents in 3D printing and composites
- Raised $157M+ in total funding for ARRIS Composites across multiple rounds including $88.5M Series C
- ARRIS named one of Fast Company's 10 Most Innovative Manufacturers
- ARRIS won BIG Innovation Award four years in a row (2021-2024)
- Led technology partnership with Brooks Running to create industry-first continuous carbon-fiber-reinforced thermoplastic running shoe plates
- ARRIS technology used in Skydio X2 drone - consolidated 17 parts into 1 composite component with 25% weight reduction
- Co-authored CAMX 2020 paper with Northrop Grumman achieving 80% weight reduction on titanium aerospace bracket using carbon fiber
- Scaled ARRIS manufacturing to Taiwan with 45,000+ sq ft facility
- Co-founded AREVO, an earlier pioneer in continuous fiber additive manufacturing
- Led strategic technology partnership with Henry Repeating Arms for composite firearm components

## Latest updates

- **2025-01** — ARRIS announced strategic technology partnership with Henry Repeating Arms for composite firearm components, with first part expected Q2 2025
- **2024-12** — ARRIS launched AURORRA by ARRIS (AXA) consumer brand featuring carbon fiber insoles at SCHEELS retail locations
- **2024-01** — ARRIS launched MTO carbon fiber bicycle spokes, 2.7x stronger gram-for-gram than best-in-class aero spoke; won 2024 BIG Innovation Award
- **2023-09** — CompositesWorld published full plant tour of ARRIS Berkeley facility, detailing production scale-up
- **2022-06** — Riley Reese elevated from CTO to CEO of ARRIS Composites

## Links

- Website: https://arriscomposites.com
- LinkedIn: https://www.linkedin.com/in/rileyr/

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Profile page: https://yespress.io/riley-reese
Published by YesPress — https://yespress.io
Last updated: 2026-05-11