About Silicon Catalyst Angels
Silicon Catalyst Angels, an accelerator and incubator program founded in 2019, is based in Santa Clara, United States. With a presence in 2 countries, it has supported around 20 startups in sectors like High Tech, Semiconductors. As of Aug 2026, Silicon Catalyst Angels has 1 unicorn under its belt. Most notable companies in
its portfolio include Ayar Labs, Neurophos and EnCharge. The program is backed by a team of 12 people who primarily support Seed startups based in United States. Its latest investment was a $4.94M Seed round in Phosio on Mar 31, 2026, which also saw participation from Mesh Ventures and Elevate Capital.
Key Metrics
Founded Year
2019
Location
Santa Clara, United States
Sectors of Investment
Stages of Investment
Seed & Series A
Locations of Investment
Unicorn in Portfolio
Silicon Catalyst Angels' List of Top Investments
Silicon Catalyst Angels has a portfolio of 20 companies, one of which is a Unicorn. Their most notable investments include Ayar Labs and Neurophos.Their portfolio spans across United States and Israel. They have invested in High Tech, Semiconductors, Auto Tech and 11 other sectors, across stages such as Seed, Series A stages. Here is the list of top investments by Silicon Catalyst Angels:
1. Ayar Labs
Developer of optical interconnect solutions for artificial intelligence infrastructure applications. The company provides optical I/O chiplets and light sources for enhanced bandwidth and power efficiency. These solutions aim to improve the performance and scalability of AI and high-performance computing systems. The company's products are intended for use in data centers and other advanced technology applications.
Key facts about Ayar Labs
- Founded Year: 2015
- Location: San Jose (United States)
- Valuation: $*****
- Stage: Series E
- Total Funding till date: $872M
- Employee Count: 253 as on Jul 31, 2026
- Investors: Intel, Sequoia Capital and 57 Others
- Latest Funding Round: Series E, Mar 03, 2026, $*****
- Highlight: Editors' Pick
2. Neurophos
Platform that deliver GPU-level performance in a compact, energy-efficient form using optical computing and metamaterials. Its technology targets AI inference, offering hundred x proress in speed and efficiency compared to traditional systems. Its OPUs perform in-memory matrix multiplications at light speed, shrinking optical modulators by ten thousands x for terawatt-scale AI compute in data centers.
Key facts about Neurophos
- Founded Year: 2020
- Location: Austin (United States)
- Stage: Series A
- Total Funding till date: $120M
- Employee Count: 62 as on Jul 31, 2026
- Investors: Robert Bosch Venture Capital, Space Capital and 14 Others
- Latest Funding Round: Series A, Nov 26, 2025, $*****
- Highlight: Editors' Pick
3. EnCharge
Developer of hardware and software for edge-to-cloud artificial intelligence compute. The company provides hardware and software designed for orchestration between on-device and cloud deployments. It offers chiplets, ASICs, and standard form-factor PCIe cards. The company's technology integrates into diverse form factors, enabling artificial intelligence capabilities in partner and customer solutions.
Key facts about EnCharge
- Founded Year: 2022
- Location: Santa Clara (United States)
- Stage: Series B
- Total Funding till date: $144M
- Employee Count: 108 as on Jul 31, 2026
- Investors: Vanderbilt University, Morgan Creek Capital Management and 19 Others
- Latest Funding Round: Series B, Feb 13, 2025, $*****
- Highlight: Editors' Pick
4. RAAAM
Developer of on-chip memory technology designed as a SRAM replacement. The technology offers silicon area reduction and reduced power consumption. It is compatible with standard CMOS fabrication flow, requiring no additional process steps or cost. The patented technology enables the extension for on-chip memories.
Key facts about RAAAM
- Founded Year: 2020
- Location: Petah Tikva (Israel)
- Stage: Series A
- Total Funding till date: $24.5M
- Employee Count: 23 as on Jul 31, 2026
- Investors: J-Ventures, IAG Capital Partners and 11 Others
- Latest Funding Round: Series A, Apr 11, 2025, $*****
- Highlight: Editors' Pick
Developer of software stack designed to run AI workloads on hardware. The software stack allows AI workloads to run on any hardware, at any scale. It matches or exceeds the performance of hand-tuned kernels. The software stack enables users to focus on models and algorithms. It allows evaluation of new xPUs and movement between clouds.
Key facts about Lemurian Labs
- Founded Year: 2007
- Location: Santa Clara (United States)
- Stage: Series A
- Total Funding till date: $37M
- Employee Count: 45 as on Jul 31, 2026
- Investors: Tola Capital, Raptor Group and 23 Others
- Latest Funding Round: Series A, Dec 03, 2025, $*****
- Highlight: Editors' Pick
Silicon Catalyst Angels' Year-on-Year Investment Trends
Silicon Catalyst Angels has invested in 20 companies over the last 8 years, with an average of 1 new investment annually in the last 5 years. As of Mar 2026, it has made 1 investment in this year. Its most recent first time investment was in Phosio and most recent follow-on round was in EnCharge.Year | No. of Investments | ||
|---|---|---|---|
1st Round | Follow-on | Total | |
2026 (YTD) | 1 | 0 | 1 |
2025 | 0 | 0 | 0 |
2024 | 1 | 0 | 1 |
2023 | 1 | 1 | 2 |
2022 | 1 | 0 | 1 |
2021 | 0 | 0 | 0 |
2020 | 0 | 0 | 0 |
2019 | 1 | 0 | 1 |
2018 | 1 | 0 | 1 |
Silicon Catalyst Angels' Investments by Stage
Silicon Catalyst Angels has made 5 investments in Seed stage with an average round size of $5.98M and 1 investment in Series A stage with an average round size of $21.7M.Stage of entry | No. of Investments |
|---|---|
Seed | 5 |
Series A | 1 |
Note: We have considered here, only first round of investments
Silicon Catalyst Angels' Investments by Sector
Silicon Catalyst Angels has a diverse portfolio, with companies operating in the Semiconductors, High Tech, Internet of Things - Industry Applications, Artificial Intelligence - Industry Applications and Auto Tech. Notably, it has invested in 16 Enterprise (B2B) companies, 16 Tech companies, 14 Tech hardware companies and at least 7 companies focusing on AI-Native.Sector | No. of Investments |
|---|---|
Semiconductors | 4 |
High Tech | 3 |
Internet of Things - Industry Applications | 2 |
Artificial Intelligence - Industry Applications | 1 |
Auto Tech | 1 |
Others | 3 |
Note: We have considered here, only first round of investments
Silicon Catalyst Angels' Investments by Geography
Silicon Catalyst Angels has made most investments in United States (5), followed by Israel where it has made 1 investment.Country | No. of Investments |
|---|---|
United States | 5 |
Israel | 1 |
Note: We have considered here, only first round of investments
Silicon Catalyst Angels' recent investments
Silicon Catalyst Angels has made 1 investments in 2026 so far - Phosio.Here are the most recent investments by Silicon Catalyst Angels:
Filter this listDate | Company | Location | Round Details | Round Amount | Co-Investors |
|---|---|---|---|---|---|
Mar 31, 2026 | United States | Seed | 9615 | [+5] | |
Apr 15, 2024 | Israel | Seed | 6532 | [+3] | |
Dec 05, 2023 | United States | Series B | 1241 | [+6] | |
Oct 04, 2023 | United States | Seed | 9831 | [+9] | |
Dec 14, 2022 | United States | Series A | 6851 | [+4] |
Unicorns in Silicon Catalyst Angels' Portfolio
Silicon Catalyst Angels has 1 unicorn in its portfolio - Ayar Labs. The most recent unicorn in their portfolio is Ayar Labs which became a unicorn in 2024, 1 years before Silicon Catalyst Angels first invested in it.Here is a list of unicorns in Silicon Catalyst Angels' portfolio:
Tracxn Score | Company | Short Description | Founded year | Sector | Location | Company Stage | First Investment/ Acquisition Details |
|---|---|---|---|---|---|---|---|
66 | Developer of optical interconnect solutions for artificial intelligence infrastructure applications | 2015 | San Jose | Series E | g{yymsl |
Team profile of Silicon Catalyst Angels
Silicon Catalyst Angels has a team of 12 members including 3 Partners and 7 Principals located in United States. Silicon Catalyst Angels' team does not sit on the board of any company as of now.Here is a list of top team members in Silicon Catalyst Angels:
Name | Designation | Location | Board Memberships | Contact Details |
|---|---|---|---|---|
Partner | Sunnyvale | - | ||
Partner | San Francisco | - | ||
Partner | Palo Alto | - | - | |
Principal | Mountain View | - | - | |
Principal | Atherton | - | - | |
Principal | San Francisco | - | - | |
Principal | San Francisco | - | - | |
Principal | Santa Clara | - | - | |
Principal | San Francisco | - | - | |
Principal | San Francisco | - | - |
Co-investors of Silicon Catalyst Angels
Over the past 8 years, 60 investors have co-invested in Silicon Catalyst Angels's portfolio companies. This includes funds and angels.
- Invested before Silicon Catalyst Angels: National Science Foundation has invested before Silicon Catalyst Angels.
- Top Co-investors of Silicon Catalyst Angels: 24 investors entered a company along with Silicon Catalyst Angels. These include investors like Alumni Ventures (2 companies).
- Invested after Silicon Catalyst Angels: A total of 35 investors have invested in Silicon Catalyst Angels's portfolio after their investments. Top Investors include Silicon Catalyst (2 companies) and VentureTech Alliance (1 company).
Recent News related to Silicon Catalyst Angels
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Phosio Raises $4 Million Seed Round to Bring Affordable AR/AI Glasses to Mass MarketBusiness Wire•Jun 02, 2026•Silicon Catalyst, Phosio, Silicon Catalyst Angels, Willamette Valley Capital and 3 others
•
New angel group for UK semi startupsElectronics Weekly•May 29, 2024•Silicon Catalyst Angels, Silicon Catalyst
•
RAAAM Memory Technologies Closes $4M Seed Round to Commercialize Super Cost Effective On-Chip Memory SolutionsBusiness Wire•Apr 15, 2024•RAAAM, Serpentine Ventures, J Ventures, HackCapital and 2 others
•
EnCharge AI: $22.6 Million Raised To Develop Advanced AI Chips And Full Stack SolutionsPulse 2.0•Dec 15, 2023•EnCharge, VentureTech Alliance, RTX, ACVC Partners and 6 others
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Lemurian Labs is building a new compute paradigm to reduce cost of running AI modelsTechCrunch+•Oct 04, 2023•Lemurian Labs, Google, Intel, Nvidia and 11 others
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EnCharge AI Launches With $21.7M Series A to Enable Edge AI at ScaleBusiness Wire•Dec 14, 2022•EnCharge, Anzu Partners, AlleyCorp, Scout Ventures and 4 others
