16 seed legal tech investors in the US
We list 16 seed legal 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 Denver (3), Fernandina Beach (1) and San Francisco (1).
Top 5 seed legal 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 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.
Side Door Michigan
Type: VC firm · HQ: Fernandina Beach, FL · Stages: Seed · Focus: Legal Tech, Space, Mobility, Crypto and Web3 · Latest activity: New fund, Sep 2026 · Fund size on file: $30M (SEC Form D, 2023)
Latest fund filing dated Sep 2026; $30M fund on file (SEC Form D, 2023); states legal tech as a focus; backs seed; 8 named decision-makers on file.
OpenAI Startup Fund
Type: Corporate VC · HQ: San Francisco, CA · Stages: Seed · Focus: Legal Tech, AI, Healthtech, Edtech · Latest activity: New fund, Aug 2026 · Fund size on file: $400M (SEC Form D, 2026)
Latest fund filing dated Aug 2026; $400M fund on file (SEC Form D, 2026); states legal tech as a focus; backs seed; 2 named decision-makers on file.
Commonweal Ventures
Type: VC firm · HQ: New York, NY · Stages: Pre-seed, Seed · Focus: Legal Tech, AI, Fintech, Energy · Latest activity: New fund, Jul 2026 · Fund size on file: $75M (SEC Form D, 2022)
Latest fund filing dated Jul 2026; $75M fund on file (SEC Form D, 2022); states legal tech as a focus; backs pre-seed, seed; names the US as where it invests; 5 named decision-makers on file.
GrayHair Venture Partners
Type: VC firm · HQ: Ridgewood, NJ · Stages: Seed · Focus: Legal Tech, AI, Fintech, Edtech · Latest activity: New fund, Nov 2026 · Fund size on file: $20M (SEC Form D, 2025)
Latest fund filing dated Nov 2026; $20M fund on file (SEC Form D, 2025); states legal tech as a focus; backs seed; 2 named decision-makers on file.
ALIAVIA Ventures
Type: VC firm · HQ: Laguna Beach, CA · Stages: Pre-seed, Seed · Focus: Legal Tech, AI, Fintech, Healthtech · Latest activity: New fund, May 2026 · Fund size on file: $20M (SEC Form D, 2021)
Latest fund filing dated May 2026; $20M fund on file (SEC Form D, 2021); states legal tech as a focus; backs pre-seed, seed; names the US as where it invests; 2 named decision-makers on file.
First 10 of 16 seed legal tech investors in the US
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| Side Door Michigan | VC firm | Fernandina Beach, FL | Seed | Legal Tech, Space, Mobility, Crypto and Web3 | New fund, Sep 2026 | $30M (SEC Form D, 2023) | 4 Nov 2026 | 8 names · Unlock |
| OpenAI Startup Fund | Corporate VC | San Francisco, CA | Seed | Legal Tech, AI, Healthtech, Edtech | New fund, Aug 2026 | $400M (SEC Form D, 2026) | 4 Nov 2026 | 2 names, firm email · Unlock |
| Commonweal Ventures | VC firm | New York, NY | Pre-seed, Seed | Legal Tech, AI, Fintech, Energy | New fund, Jul 2026 | $75M (SEC Form D, 2022) | 4 Nov 2026 | 5 names, firm email · Unlock |
| GrayHair Venture Partners | VC firm | Ridgewood, NJ | Seed | Legal Tech, AI, Fintech, Edtech | New fund, Nov 2026 | $20M (SEC Form D, 2025) | 4 Nov 2026 | 2 names, firm email · Unlock |
| ALIAVIA Ventures | VC firm | Laguna Beach, CA | Pre-seed, Seed | Legal Tech, AI, Fintech, Healthtech | New fund, May 2026 | $20M (SEC Form D, 2021) | 4 Nov 2026 | 2 names · Unlock |
| Antiportfolio Ventures | VC firm | United States | Seed | Legal Tech, Healthtech, Fintech, Medtech | New fund, Jan 2026 | $30M (SEC Form D, 2026) | 4 Nov 2026 | 1 name · Unlock |
| Denver Angels | VC firm | Denver, CO | Pre-seed, Seed, Series A, Series B, Growth | Legal Tech, AI, Logistics, Generalist | New deal, Apr 2026 | $202k (SEC Form D, 2023) | 5 Nov 2026 | 8 names · Unlock |
| CrossImpact Capital | VC firm | Boston, MA | Pre-seed, Seed | Legal Tech, AI, Fintech, Insurtech | New fund, Feb 2025 | $1M (SEC Form D, 2024) | 5 Nov 2026 | 1 name · Unlock |
| Moon | VC firm | Los Angeles, CA | Seed | Legal Tech, Crypto and Web3, AI, Fintech | New fund, May 2025 | $7M (SEC Form D, 2025) | 5 Nov 2026 | 1 name, firm email · Unlock |
| Fortify Ventures | VC firm | Ashburn, VA | Pre-seed, Seed | Legal Tech, Fintech, Mobility, Healthtech | New fund, Jul 2025 | $50M (SEC Form D, 2024) | 4 Nov 2026 | 5 names · Unlock |
You are seeing 10 of 16. The full list adds 6 more investors and 50 named decision-makers.
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How these 16 break down
By US state
| US state | On this list | Share |
|---|---|---|
| California | 5 | 31% |
| Colorado | 3 | 19% |
| Florida | 2 | 12% |
By type
| Type | On this list | Share |
|---|---|---|
| VC firm | 15 | 94% |
| Corporate VC | 1 | 6% |
Method and limits
- Source
- All 16 rows carry an SEC filing (Form D or Form ADV). All 16 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 legal 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 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 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 16 rows: stage 16, sector 16, fund size 15, website 16. In the paid file: named decision-makers on 16 rows, firm email on 5, LinkedIn page on 9, check size on 4.
- Corrections
- Email hello@theinvestordatabase.com or use the update form. We act within 5 working days.
Questions
How many seed legal tech investors in the US are there?
We list 16 as of November 2026. 9 of the 16 have a fund filing or a dated deal in the last 12 months. The cities with the most are Denver (3), Fernandina Beach (1) and San Francisco (1).
Which seed legal tech investors in the US raised a new fund in the last 12 months?
8 of the 16 have a fund filing dated in the last 12 months. The most recent on this list are GrayHair Venture Partners (Nov 2026), R-Squared Ventures (Oct 2026) and Side Door Michigan (Sep 2026).
What is the typical fund size of seed legal tech investors in the US?
The median fund size on file for this list is $20M, across the 15 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 1 does not disclose a size there.
How do I contact seed legal tech investors in the US?
The paid file holds 50 named decision-makers across 16 of these 16 and a firm email for 5. 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 seed legal tech investors in the US come from?
All 16 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
Legal tech venture capital firms in the US (19)Seed investors in the US (1,043)Seed legal tech investors (22)
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