---
title: "16 Seed Legal Tech Investors in the US (Nov 2026)"
last_updated: "2026-11-06"
rows: "16"
free_rows: "10"
source: "SEC filings"
canonical: "https://theinvestordatabase.com/lists/seed-legal-tech-investors-us/"
---

# 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).

- 16 investors
- 9 with a fund filing or dated deal in the last 12 months
- $20M median fund size on file (SEC Form D, 15 firms)
- 50 named decision-makers on file

## First 10 of 16 seed legal tech investors in the US

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/side-door-michigan/ |
| OpenAI Startup Fund | Corporate VC | San Francisco, CA | Seed | Legal Tech, AI, Healthtech, Edtech | New fund, Aug 2026 | $400M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/openai-startup-fund/ |
| Commonweal Ventures | VC firm | New York, NY | Pre-seed, Seed | Legal Tech, AI, Fintech, Energy | New fund, Jul 2026 | $75M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/commonweal-ventures/ |
| GrayHair Venture Partners | VC firm | Ridgewood, NJ | Seed | Legal Tech, AI, Fintech, Edtech | New fund, Nov 2026 | $20M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/grayhair-venture-partners/ |
| ALIAVIA Ventures | VC firm | Laguna Beach, CA | Pre-seed, Seed | Legal Tech, AI, Fintech, Healthtech | New fund, May 2026 | $20M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/aliavia-ventures/ |
| Antiportfolio Ventures | VC firm | United States | Seed | Legal Tech, Healthtech, Fintech, Medtech | New fund, Jan 2026 | $30M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/antiportfolio-ventures/ |
| 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) | 2026-11-05 | https://theinvestordatabase.com/investors/denver-angels/ |
| CrossImpact Capital | VC firm | Boston, MA | Pre-seed, Seed | Legal Tech, AI, Fintech, Insurtech | New fund, Feb 2025 | $1M (SEC Form D, 2024) | 2026-11-05 | https://theinvestordatabase.com/investors/crossimpact-capital/ |
| Moon | VC firm | Los Angeles, CA | Seed | Legal Tech, Crypto and Web3, AI, Fintech | New fund, May 2025 | $7M (SEC Form D, 2025) | 2026-11-05 | https://theinvestordatabase.com/investors/moon/ |
| Fortify Ventures | VC firm | Ashburn, VA | Pre-seed, Seed | Legal Tech, Fintech, Mobility, Healthtech | New fund, Jul 2025 | $50M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/fortify-ventures/ |

You are seeing 10 of 16. The full list adds 6 more investors and 50 named decision-makers.

Get all 16 investors and 50 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/seed-legal-tech-investors-us
This page: https://theinvestordatabase.com/lists/seed-legal-tech-investors-us/

## 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: 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.
- 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.

## 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.