114 pre-seed deep tech investors in the US
We list 114 pre-seed deep tech investors in the US as of November 2026: each has an SEC filing on file, and the list was last checked on 6 Nov 2026. The cities with the most head offices on this list are San Francisco (15), New York (12) and Palo Alto (8).
Top 5 pre-seed deep tech investors in the US, ranked by recent fund activity
Among firms with a published profile and a dated fund or deal in the last 24 months. The rule: Activity score out of 100: recency of the latest fund filing or dated deal (30: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (20; 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), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (12) and completeness of the public record (8). Stage and regional focus are our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns. The same rule orders the whole list; it is repeated in the method box.
SOSV
Type: VC firm · HQ: United States · Stages: Pre-seed · Focus: Deep Tech, Climate Tech, Healthtech, Biotech · Latest activity: Portfolio news, Nov 2026 · Fund size on file: $131M (SEC Form D, 2022)
Portfolio news dated Nov 2026; $131M fund on file (SEC Form D, 2022); states deep tech as a focus; backs pre-seed; names the US as where it invests; 8 named decision-makers on file.
1517 Fund
Type: VC firm · HQ: Telluride, CO · Stages: Pre-seed · Focus: Deep Tech, AI, Edtech, SaaS · Latest activity: New fund, Sep 2026 · Fund size on file: $43M (SEC Form D, 2025)
Latest fund filing dated Sep 2026; $43M fund on file (SEC Form D, 2025); 17% of its observed portfolio is deep tech; backs pre-seed; names the US as where it invests; 2 named decision-makers on file.
Inflection
Type: VC firm · HQ: Framingham, MA · Stages: Pre-seed, Seed · Focus: Deep Tech, AI, Space, Defense Tech · Latest activity: New fund, Sep 2026 · Fund size on file: $50M (SEC Form D, 2026)
Latest fund filing dated Sep 2026; $50M fund on file (SEC Form D, 2026); 27% of its observed portfolio is deep tech; backs pre-seed, seed; names the US as where it invests; 3 named decision-makers on file.
Ecosphere Ventures
Type: VC firm · HQ: Sugar Land, TX · Stages: Pre-seed, Seed · Focus: Deep Tech, Energy, Climate Tech, Industrial Tech · Latest activity: New fund, Sep 2026 · Fund size on file: $10M (SEC Form D, 2026)
Latest fund filing dated Sep 2026; $10M fund on file (SEC Form D, 2026); 32% of its observed portfolio is deep tech; backs pre-seed, seed; names the US as where it invests; 8 named decision-makers on file.
Madrona
Type: VC firm · HQ: Seattle, WA · Stages: Pre-seed, Seed, Series A, Series B, Growth · Focus: Deep Tech, AI, Biotech, Consumer · Latest activity: New deal, Oct 2026 · Fund size on file: $490M (SEC Form D, 2025)
Dated new deal in Oct 2026; $490M fund on file (SEC Form D, 2025); states deep tech as a focus; backs pre-seed, seed, Series A; names the US as where it invests; 8 named decision-makers on file.
First 25 of 114 pre-seed deep tech investors in the US
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| SOSV | VC firm | United States | Pre-seed | Deep Tech, Climate Tech, Healthtech, Biotech | Portfolio news, Nov 2026 | $131M (SEC Form D, 2022) | 4 Nov 2026 | 8 names · Unlock |
| 1517 Fund | VC firm | Telluride, CO | Pre-seed | Deep Tech, AI, Edtech, SaaS | New fund, Sep 2026 | $43M (SEC Form D, 2025) | 4 Nov 2026 | 2 names, firm email · Unlock |
| Inflection | VC firm | Framingham, MA | Pre-seed, Seed | Deep Tech, AI, Space, Defense Tech | New fund, Sep 2026 | $50M (SEC Form D, 2026) | 4 Nov 2026 | 3 names, firm email · Unlock |
| Ecosphere Ventures | VC firm | Sugar Land, TX | Pre-seed, Seed | Deep Tech, Energy, Climate Tech, Industrial Tech | New fund, Sep 2026 | $10M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Madrona | VC firm | Seattle, WA | Pre-seed, Seed, Series A, Series B, Growth | Deep Tech, AI, Biotech, Consumer | New deal, Oct 2026 | $490M (SEC Form D, 2025) | 5 Nov 2026 | 8 names · Unlock |
| TreeoVC | VC firm | Pompano Beach, FL | Pre-seed, Seed | Deep Tech, AI, Healthtech, Robotics | New fund, Aug 2026 | $9M (SEC Form D, 2023) | 4 Nov 2026 | 3 names, firm email · Unlock |
| True Ventures | VC firm | Palo Alto, CA | Pre-seed, Seed | Deep Tech, AI, Fintech, Consumer | New fund, Sep 2026 | $800M (SEC Form D, 2022) | 4 Nov 2026 | 8 names · Unlock |
| Protagonist | VC firm | Bay Harbor Islands, FL | Pre-seed | Deep Tech, AI, Industrial Tech, Energy | New fund, Aug 2026 | $150M (SEC Form D, 2026) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Silent Ventures | VC firm | Dallas, TX | Pre-seed | Deep Tech, Defense Tech, AI, Logistics | New fund, Jul 2026 | $85M (SEC Form D, 2025) | 4 Nov 2026 | 1 name · Unlock |
| BetterWay Ventures | VC firm | Charleston, SC | Pre-seed, Seed | Deep Tech, Industrial Tech, Climate Tech | New fund, Sep 2026 | $5M (SEC Form D, 2024) | 4 Nov 2026 | 1 name · Unlock |
| 2048 Ventures | VC firm | Princeton, NJ | Pre-seed, Seed | Deep Tech, AI, Healthtech, Biotech | New deal, Jun 2026 | $82M (SEC Form D, 2025) | 4 Nov 2026 | 8 names · Unlock |
| Bison Ventures | VC firm | San Francisco, CA | Pre-seed, Seed, Series A, Series B | Deep Tech, AI, Healthtech, Energy | New fund, Oct 2026 | $160M (SEC Form D, 2025) | 4 Nov 2026 | 2 names, firm email · Unlock |
| Khosla Ventures | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Growth | Deep Tech, AI, Consumer, B2B | New fund, Aug 2026 | $1.9B (SEC Form D, 2025) | 4 Nov 2026 | 8 names · Unlock |
| Julian Capital: Deeptech Seed Fund | VC firm | San Francisco, CA | Pre-seed, Seed | Deep Tech, Energy, Healthtech, Climate Tech | New fund, Aug 2026 | $51M (SEC Form D, 2026) | 4 Nov 2026 | 5 names · Unlock |
| Timescale Ventures | VC firm | Marblehead, MA | Pre-seed, Seed | Deep Tech, Energy, Industrial Tech, AI | New fund, Sep 2026 | $50M (SEC Form D, 2025) | 4 Nov 2026 | 2 names, firm email · Unlock |
| Everywhere Ventures | VC firm | New York, NY | Pre-seed | Deep Tech, Generalist, Fintech, Healthtech | New fund, Mar 2026 | $25M (SEC Form D, 2026) | 4 Nov 2026 | 1 name · Unlock |
| ARCH Venture Partners | VC firm | Chicago, IL | Pre-seed, Seed | Deep Tech, Biotech, Healthtech | New fund, Aug 2026 | $3.0B (SEC Form D, 2024) | 4 Nov 2026 | 8 names · Unlock |
| Deep Future | VC firm | Seattle, WA | Pre-seed | Deep Tech, Energy, Semiconductor, Robotics | New fund, May 2026 | $50M (SEC Form D, 2025) | 4 Nov 2026 | 1 name · Unlock |
| Galileo Ventures | VC firm | San Francisco, CA | Pre-seed, Seed | Deep Tech, AI, Robotics, B2B | New fund, Aug 2026 | $100M (SEC Form D, 2023) | 5 Nov 2026 | 5 names, firm email · Unlock |
| Kindred Ventures | VC firm | San Francisco, CA | Pre-seed, Seed | Deep Tech, AI, Crypto and Web3, Fintech | New fund, Sep 2026 | $230M (SEC Form D, 2025) | 4 Nov 2026 | 8 names · Unlock |
| Autotech Ventures | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B | Deep Tech, Mobility, AI, Logistics | New fund, Aug 2026 | $25M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Glasswing Ventures | VC firm | Boston, MA | Pre-seed | Deep Tech, AI, Future of Work, Cybersecurity | New deal, Jun 2026 | $203M (SEC Form D, 2024) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Great Wave Ventures | VC firm | New York, NY | Pre-seed, Seed, Series A | Deep Tech, AI, Proptech, Climate Tech | New fund, May 2026 | $31M (SEC Form ADV) | 5 Nov 2026 | 5 names · Unlock |
| Earthshot Ventures | VC firm | San Francisco, CA | Pre-seed, Seed, Series A, Series B | Deep Tech, AI, Energy, Industrial Tech | New fund, Oct 2026 | $77M (SEC Form D, 2026) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Geek Ventures | VC firm | New York, NY | Pre-seed, Seed | Deep Tech, AI, Generalist, B2B | New fund, May 2026 | $23M (SEC Form D, 2021) | 4 Nov 2026 | 4 names, firm email · Unlock |
You are seeing 25 of 114. The full list adds 89 more investors and 554 named decision-makers.
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How these 114 break down
By US state
| US state | On this list | Share |
|---|---|---|
| California | 46 | 40% |
| New York | 14 | 12% |
| Massachusetts | 12 | 11% |
| Texas | 7 | 6% |
| Washington | 6 | 5% |
| Colorado | 5 | 4% |
| Florida | 4 | 4% |
| New Jersey | 2 | 2% |
| Illinois | 2 | 2% |
| Pennsylvania | 2 | 2% |
Method and limits
- Source
- All 114 rows carry an SEC filing (Form D or Form ADV). All 114 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 deep tech 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
- Firms with a published profile come first. Activity score out of 100: recency of the latest fund filing or dated deal (30: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (20; 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), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (12) and completeness of the public record (8). Stage and regional focus are our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Last refreshed
- November 2026. Rows on this list were checked between 4 Nov 2026 and 6 Nov 2026.
- Fill rates
- Of 114 rows: stage 114, sector 114, fund size 99, website 114. In the paid file: named decision-makers on 111 rows, firm email on 36, LinkedIn page on 63, check size on 18.
- Corrections
- Email [email protected] or use the update form. We act within 5 working days.
Questions
How many pre-seed deep tech investors in the US are there?
We list 114 as of November 2026. 69 of the 114 have a fund filing or a dated deal in the last 12 months. The cities with the most are San Francisco (15), New York (12) and Palo Alto (8).
Which pre-seed deep tech investors in the US raised a new fund in the last 12 months?
58 of the 114 have a fund filing dated in the last 12 months. The most recent on this list are Pear Ventures (Oct 2026), Bison Ventures (Oct 2026) and Earthshot Ventures (Oct 2026).
What is the typical fund size of pre-seed deep tech investors in the US?
The median fund size on file for this list is $50M, across the 87 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 27 do not disclose a size there.
How do I contact pre-seed deep tech investors in the US?
The paid file holds 554 named decision-makers across 111 of these 114 and a firm email for 36. 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 deep tech investors in the US come from?
All 114 rows have an SEC filing on file (Form D or Form ADV). 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 6 Nov 2026 at the latest. The whole file is re-verified twice a year.
Broader lists
Deep tech venture capital firms in the US (322)Pre-seed investors in the US (549)Pre-seed deep tech investors (316)
Related lists
Pre-seed AI investors in the US (403)Pre-seed SaaS investors in the US (367)Pre-seed healthtech investors in the US (225)Seed deep tech investors in the US (205)Pre-seed fintech investors in the US (187)Pre-seed consumer investors in the US (104)Pre-seed medtech investors in the US (95)Pre-seed hardware investors in the US (95)Pre-seed B2B investors in the US (86)Pre-seed climate tech investors in the US (84)Pre-seed biotech investors in the US (81)Pre-seed industrial tech investors in the US (79)Pre-seed robotics investors in the US (76)Series A deep tech investors in the US (73)Pre-seed energy investors in the US (73)Pre-seed developer tools investors in the US (67)Pre-seed cybersecurity investors in the US (60)Pre-seed future of work investors in the US (52)
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