---
title: "20 Series A Investors in Illinois (Nov 2026)"
last_updated: "2026-11-05"
rows: "20"
free_rows: "10"
source: "SEC filings"
canonical: "https://theinvestordatabase.com/lists/series-a-investors-in-illinois/"
---

# 20 Series A investors in Illinois

We list 20 Series A investors in Illinois as of November 2026: each has an SEC filing on file, and the list was last checked on 5 Nov 2026. The cities with the most head offices on this list are Chicago (15), Darien (1) and Winnetka (1).

- 20 investors
- 13 with a fund filing or dated deal in the last 12 months
- $100M median fund size on file (SEC Form D, 13 firms)
- 115 named decision-makers on file

## First 10 of 20 Series A investors in Illinois

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| Jump Capital | VC firm | Chicago, IL | Seed, Series A | AI, Cybersecurity, Fintech, SaaS | New deal, Oct 2026 | $456M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/jump-capital/ |
| Nine Four Ventures | VC firm | Chicago, IL | Pre-seed, Seed, Series A | Proptech, AI, Fintech, SaaS | Portfolio news, Oct 2026 | $100M (SEC Form D, 2022) | 2026-11-05 | https://theinvestordatabase.com/investors/nine-four-ventures/ |
| Promus Ventures | VC firm | Chicago, IL | Seed, Series A | Deep Tech, Space, Industrial Tech, Mobility | Portfolio news, Sep 2026 | $203M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/orbital-ventures/ |
| Distributed Ventures | VC firm | Chicago, IL | Seed, Series A | Fintech, Insurtech, Healthtech, AI | New deal, Jul 2026 | $90M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/distributed-ventures/ |
| Origin Ventures | VC firm | Chicago, IL | Seed, Series A | AI, Future of Work, SaaS, Marketplace | New deal, May 2026 | $130M (SEC Form D, 2023) | 2026-11-05 | https://theinvestordatabase.com/investors/origin-ventures/ |
| Energize Ventures | VC firm | Chicago, IL | Series A, Series B, Growth, Any stage | Energy, AI, Industrial Tech, Climate Tech | New deal, Sep 2026 | $328M (SEC Form D, 2020) | 2026-11-05 | https://theinvestordatabase.com/investors/energize-ventures/ |
| Hyde Park Angels | VC firm | Darien, IL | Seed, Series A | AI, Ecommerce, Fintech, Logistics | Portfolio news, Nov 2026 | $50M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/hyde-park-angels/ |
| Sandbox Clinical Ventures | VC firm | Chicago, IL | Seed, Series A, Series B, Growth | Insurtech, Healthtech, AI, Fintech | New fund, Sep 2026 | $100M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/sandbox-clinical-ventures/ |
| Atlas Ventures | VC firm | Chicago, IL | Seed, Series A, Series B | Logistics, AI, Cybersecurity, Industrial Tech | New fund, Sep 2026 | $23M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/atlas-ventures/ |
| Hyde Park Venture Partners | VC firm | Chicago, IL | Pre-seed, Seed, Series A | AI, Fintech, SaaS, Healthtech | New deal, Apr 2026 | $100M (SEC Form D, 2023) | 2026-11-05 | https://theinvestordatabase.com/investors/hyde-park-venture-partners/ |

You are seeing 10 of 20. The full list adds 10 more investors and 115 named decision-makers.

Get all 20 investors and 115 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/series-a-investors-in-illinois
This page: https://theinvestordatabase.com/lists/series-a-investors-in-illinois/

## Method and limits
- Source: All 20 rows carry an SEC filing (Form D or Form ADV). All 20 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. Stage: the firm states that it invests at Series A. Place: head office in Illinois.
- Order: Activity score out of 100: recency of the latest fund filing or dated deal (40: full marks within 3 months, then stepping down at 6, 12 and 24 months), stage focus (15: all of it when Series A 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 (20) and completeness of the public record (10). 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 20 rows: stage 20, sector 19, fund size 20, website 20. In the paid file: named decision-makers on 19 rows, firm email on 11, LinkedIn page on 19, check size on 2.

## Questions
### How many Series A investors in Illinois are there?
We list 20 as of November 2026. 13 of the 20 have a fund filing or a dated deal in the last 12 months. The cities with the most are Chicago (15), Darien (1) and Winnetka (1).

### Which Series A investors in Illinois raised a new fund in the last 12 months?
5 of the 20 have a fund filing dated in the last 12 months. The most recent on this list are Sandbox Clinical Ventures (Sep 2026), Atlas Ventures (Sep 2026) and UA1 VC (Apr 2026).

### What is the typical fund size of Series A investors in Illinois?
The median fund size on file for this list is $100M, across the 13 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 7 do not disclose a size there.

### How do I contact Series A investors in Illinois?
The paid file holds 115 named decision-makers across 19 of these 20 and a firm email for 11. 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 Series A investors in Illinois come from?
All 20 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 5 Nov 2026 at the latest. The whole file is re-verified twice a year.