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Updated November 2026

16 Series A investors in Chicago

We list 16 Series A investors in Chicago 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) and Winnetka (1).

16investors
12with a fund filing or dated deal in the last 12 months
$100Mmedian fund size on file (SEC Form D, 12 firms)
88named decision-makers on file

Series A investors in Chicago ranked 6 to 10 by recent fund activity

The 5 highest-ranked investors on this list are the same 5 as on our list of Series A investors in Illinois (20), where they are shown with the ranking rule. Below are the next 5 on this list by the same rule, which is stated in the method box.

  1. Energize Ventures

    Type: VC firm · HQ: Chicago, IL · Stages: Series A, Series B, Growth, Any stage · Focus: Energy, AI, Industrial Tech, Climate Tech · Latest activity: New deal, Sep 2026 · Fund size on file: $328M (SEC Form D, 2020)

    Dated new deal in Sep 2026; $328M fund on file (SEC Form D, 2020); backs Series A, Series B, growth-stage; 8 named decision-makers on file.

  2. Sandbox Clinical Ventures

    Type: VC firm · HQ: Chicago, IL · Stages: Seed, Series A, Series B, Growth · Focus: Insurtech, Healthtech, AI, Fintech · Latest activity: New fund, Sep 2026 · Fund size on file: $100M (SEC Form D, 2021)

    Latest fund filing dated Sep 2026; $100M fund on file (SEC Form D, 2021); backs seed, Series A, Series B; 8 named decision-makers on file.

  3. Atlas Ventures

    Type: VC firm · HQ: Chicago, IL · Stages: Seed, Series A, Series B · Focus: Logistics, AI, Cybersecurity, Industrial Tech · Latest activity: New fund, Sep 2026 · Fund size on file: $23M (SEC Form D, 2026)

    Latest fund filing dated Sep 2026; $23M fund on file (SEC Form D, 2026); backs seed, Series A, Series B; 3 named decision-makers on file.

  4. Hyde Park Venture Partners

    Type: VC firm · HQ: Chicago, IL · Stages: Pre-seed, Seed, Series A · Focus: AI, Fintech, SaaS, Healthtech · Latest activity: New deal, Apr 2026 · Fund size on file: $100M (SEC Form D, 2023)

    Dated new deal in Apr 2026; $100M fund on file (SEC Form D, 2023); backs pre-seed, seed, Series A; names the US as where it invests; 3 named decision-makers on file.

  5. UA1 VC

    Type: VC firm · HQ: Winnetka, IL · Stages: Pre-seed, Seed, Series A · Focus: Defense Tech, Industrial Tech, Deep Tech, Robotics · Latest activity: New fund, Apr 2026 · Fund size on file: $21M (SEC Form D, 2025)

    Latest fund filing dated Apr 2026; $21M fund on file (SEC Form D, 2025); backs pre-seed, seed, Series A; 2 named decision-makers on file.

First 10 of 16 Series A investors in Chicago

InvestorTypeHQStagesour researchFocusour researchLatest fund or dealFund sizeas filed or statedCheckedContacts
Jump CapitalVC firmChicago, ILSeed, Series AAI, Cybersecurity, Fintech, SaaSNew deal, Oct 2026$456M (SEC Form ADV)5 Nov 20268 names · Unlock
Nine Four VenturesVC firmChicago, ILPre-seed, Seed, Series AProptech, AI, Fintech, SaaSPortfolio news, Oct 2026$100M (SEC Form D, 2022)5 Nov 20268 names · Unlock
Promus VenturesVC firmChicago, ILSeed, Series ADeep Tech, Space, Industrial Tech, MobilityPortfolio news, Sep 2026$203M (SEC Form ADV)5 Nov 2026firm email · Unlock
Distributed VenturesVC firmChicago, ILSeed, Series AFintech, Insurtech, Healthtech, AINew deal, Jul 2026$90M (SEC Form D, 2021)5 Nov 20265 names, firm email · Unlock
Origin VenturesVC firmChicago, ILSeed, Series AAI, Future of Work, SaaS, MarketplaceNew deal, May 2026$130M (SEC Form D, 2023)5 Nov 20268 names · Unlock
Energize VenturesVC firmChicago, ILSeries A, Series B, Growth, Any stageEnergy, AI, Industrial Tech, Climate TechNew deal, Sep 2026$328M (SEC Form D, 2020)5 Nov 20268 names · Unlock
Sandbox Clinical VenturesVC firmChicago, ILSeed, Series A, Series B, GrowthInsurtech, Healthtech, AI, FintechNew fund, Sep 2026$100M (SEC Form D, 2021)4 Nov 20268 names, firm email · Unlock
Atlas VenturesVC firmChicago, ILSeed, Series A, Series BLogistics, AI, Cybersecurity, Industrial TechNew fund, Sep 2026$23M (SEC Form D, 2026)4 Nov 20263 names · Unlock
Hyde Park Venture PartnersVC firmChicago, ILPre-seed, Seed, Series AAI, Fintech, SaaS, HealthtechNew deal, Apr 2026$100M (SEC Form D, 2023)5 Nov 20263 names · Unlock
UA1 VCVC firmWinnetka, ILPre-seed, Seed, Series ADefense Tech, Industrial Tech, Deep Tech, RoboticsNew fund, Apr 2026$21M (SEC Form D, 2025)4 Nov 20262 names, firm email · Unlock

You are seeing 10 of 16. The full list adds 6 more investors and 88 named decision-makers.

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How these 16 break down

By city

CityOn this listShare
Chicago1594%
Winnetka16%

By sector

SectorOn this listShare
AI1062%
SaaS1062%
Fintech850%
Healthtech744%
Industrial Tech531%
Logistics425%
Proptech319%
Deep Tech319%
Insurtech319%
Medtech319%
Robotics319%
Climate Tech319%

Sector is our research. A firm can carry more than one sector.

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. Stage: the firm states that it invests at Series A. Place: head office in Chicago, matched on city and state.
Order
Firms with a published profile come first. 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.
Last refreshed
November 2026. Rows on this list were checked between 4 Nov 2026 and 5 Nov 2026.
Fill rates
Of 16 rows: stage 16, sector 15, fund size 16, website 16. In the paid file: named decision-makers on 15 rows, firm email on 9, LinkedIn page on 15, check size on 2.
Corrections
Email hello@theinvestordatabase.com or use the update form. We act within 5 working days.

How we verify

Questions

How many Series A investors in Chicago are there?

We list 16 as of November 2026. 12 of the 16 have a fund filing or a dated deal in the last 12 months. The cities with the most are Chicago (15) and Winnetka (1).

Which Series A investors in Chicago raised a new fund in the last 12 months?

5 of the 16 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 Chicago?

The median fund size on file for this list is $100M, 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 4 do not disclose a size there.

How do I contact Series A investors in Chicago?

The paid file holds 88 named decision-makers across 15 of these 16 and a firm email for 9. 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 Chicago 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 5 Nov 2026 at the latest. The whole file is re-verified twice a year.

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