--- title: "18 Pre-seed Semiconductor Investors (Nov 2026)" last_updated: "2026-11-07" rows: "18" free_rows: "10" source: "SEC Form D filings and our own research" canonical: "https://theinvestordatabase.com/lists/pre-seed-semiconductor-investors/" --- # 18 pre-seed semiconductor investors We list 18 pre-seed semiconductor investors as of November 2026: 14 have an SEC filing on file and 4 were checked on the firm's own website or an official register, and the list was last checked on 7 Nov 2026. The states with the most are California (5), Massachusetts (3) and New York (2). - 18 investors - 15 with a fund filing or dated deal in the last 12 months - $50M median fund size on file (SEC Form D, 12 firms) - 84 named decision-makers on file ## First 10 of 18 pre-seed semiconductor investors | Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile | |---|---|---|---|---|---|---|---|---| | Protagonist | VC firm | Bay Harbor Islands, FL | Pre-seed | Semiconductor, AI, Industrial Tech, Energy | New fund, Aug 2026 | $150M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/protagonist/ | | Inflection | VC firm | Framingham, MA | Pre-seed, Seed | Semiconductor, AI, Space, Defense Tech | New fund, Sep 2026 | $50M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/inflection/ | | Julian Capital: Deeptech Seed Fund | VC firm | San Francisco, CA | Pre-seed, Seed | Semiconductor, Energy, Deep Tech, Healthtech | New fund, Aug 2026 | $51M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/julian-capital-deeptech-seed-fund/ | | Bison Ventures | VC firm | San Francisco, CA | Pre-seed, Seed, Series A, Series B | Semiconductor, AI, Healthtech, Energy | New fund, Oct 2026 | $160M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/bison-ventures/ | | Mayfield | VC firm | Menlo Park, CA | Pre-seed | Semiconductor, AI, Consumer, Healthtech | New fund, Sep 2026 | | 2026-11-04 | https://theinvestordatabase.com/investors/mfo-fund/ | | Deep Future | VC firm | Seattle, WA | Pre-seed | Semiconductor, Energy, Robotics, Deep Tech | New fund, May 2026 | $50M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/deep-future/ | | Empirical Ventures | SEIS/EIS fund | London, United Kingdom | Pre-seed, Seed | Semiconductor, Biotech, Energy, Deep Tech | New deal, Jul 2026 | £50M (own site) | 2026-11-04 | https://theinvestordatabase.com/investors/empirical-ventures/ | | W Health Ventures | VC firm | Boston, MA | Pre-seed | Semiconductor, Healthtech, AI, Medtech | New fund, Dec 2025 | $45M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/w-health-ventures/ | | ThatRound | Investment platform | London, United Kingdom | Pre-seed, Seed | Semiconductor, AI, Energy, Generalist | Portfolio news, Sep 2026 | | 2026-11-04 | https://theinvestordatabase.com/investors/thatround/ | | TNO Ventures | Government or university fund | Netherlands | Pre-seed, Seed | Semiconductor, Deep Tech, AI, Medtech | Portfolio news, Sep 2026 | | 2026-11-07 | https://theinvestordatabase.com/investors/tno-ventures-holding-b-v/ | You are seeing 10 of 18. The full list adds 8 more investors and 84 named decision-makers. Get all 18 investors and 84 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/pre-seed-semiconductor-investors This page: https://theinvestordatabase.com/lists/pre-seed-semiconductor-investors/ ## Method and limits - Source: 14 of the 18 rows carry an SEC filing (Form D or Form ADV). All 18 have a website we checked. Filing date and fund size are SEC data where a filing exists. Stage, sector and check size are our research. - Inclusion rule: Organizations that back startups. Individuals, buyout funds and firms we found to be inactive are left out. Sector: the firm states semiconductors as a focus on its own site, or we observed it in the firm's portfolio. Stage: the firm states that it invests at pre-seed. - Order: Activity score out of 100: recency of the latest fund filing or dated deal (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), stage focus (15: all of it when pre-seed is the only stage the firm states, split evenly when it states more), size of the fund on file on a log scale (15) and completeness of the public record (10). Stage focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns. - Fill rates: Of 18 rows: stage 18, sector 18, fund size 13, website 18. In the paid file: named decision-makers on 17 rows, firm email on 10, LinkedIn page on 10, check size on 6. ## Questions ### How many pre-seed semiconductor investors are there? We list 18 as of November 2026. 15 of the 18 have a fund filing or a dated deal in the last 12 months. ### Which pre-seed semiconductor investors raised a new fund in the last 12 months? 10 of the 18 have a fund filing dated in the last 12 months. The most recent on this list are Bison Ventures (Oct 2026), Mayfield (Sep 2026) and Inflection (Sep 2026). ### What is the typical fund size of pre-seed semiconductor investors? The median fund size on file for this list is $50M, across the 12 firms with a size on an SEC Form D. The fund on file is each firm's main fund, which is not always its newest. The other 6 do not disclose a size there. ### How do I contact pre-seed semiconductor investors? The paid file holds 84 named decision-makers across 17 of these 18 and a firm email for 10. We publish the address a firm lists itself, never a personal email. Each free row links to a profile with the firm's website. ### Where does the data on pre-seed semiconductor investors come from? 14 of the 18 rows have an SEC filing on file (Form D or Form ADV) and 4 were checked on the firm's own website or an official register. Filing date and fund size come from the filing. Stage, sector and check size are our research. Rows on this list were last checked on 7 Nov 2026 at the latest. The whole file is re-verified twice a year.