| Stenger Family Office, LLC | Multi-family office | Naperville, IL | 4 | · | · | 6 | 13F $629M | Jul 13, 2026 |
| Cypress Wealth Management | Multi-family office | Oakbrook Terrace, IL | · | · | · | 1 | RAUM $283M | Mar 20, 2026 |
| DNS Capital | Single family office | Chicago, IL | 9 | 2 | Software (1 deal), Financial services (1 deal) | 14 | · | · |
| P••••••• G•••• | Family investment company | IL | · | 3 | Life sciences (1 deal) | · | Foundations $85.7M | Sep 18, 2018 |
| W•••••• H••••• I•••••••• I•• | Single family office | IL | · | · | · | · | Foundations $364M | · |
| C•••••• F••••• P••••••• I•• | Family investment company | IL | 1 | 2 | Healthcare services (1 deal), Hospitality and leisure (1 deal) | 5 | Foundations $56.5M | · |
| C•••••• | Multi-family office | Chicago, IL | 20 | · | · | 23 | 13F $28B | Sep 9, 2026 |
| M••• F••••• O••••• S••••••• L•• | Outsourced family office provider | IL | · | · | · | · | Foundations $252M | · |
| A••••• C••••••• L•• | Family investment company | Champaign, IL | 8 | 11 | Software (2 deals), Healthcare services (2 deals), Life sciences (1 deal), +1 more | 8 | · | Oct 6, 2014 |
| L••••••• A•••• M••••••••• L•• | Single family office | Chicago, IL | 1 | 3 | Hardware and deep tech (1 deal), Aerospace, defense and government (1 deal) | 5 | 13F $9.9B | Aug 14, 2026 |
| P••••••• O••••••••• | Family investment company | Chicago, IL | 15 | 69 | Financial services (4 deals), Life sciences (stated), Manufacturing (stated) | 36 | · | Jan 1, 2024 |
| W••••• E••••••••• L•• | Single family office | Chicago, IL | 3 | 46 | Life sciences (2 deals), Healthcare services (1 deal) | 5 | · | Jan 1, 2024 |
| P••••••• P•••••• C•••••• | Family investment company | Chicago, IL | 35 | 8 | Healthcare services (stated), Life sciences (stated), Business services (stated), +4 more | 61 | · | Jun 23, 2025 |
| H•••• C•••• a•• C•••••• | Family investment company | Chicago, IL | 3 | 1 | Hardware and deep tech (1 deal), Aerospace, defense and government (1 deal) | 6 | · | Jan 1, 1959 |
| C••••••• G•••• | Family investment company | Chicago, IL | · | 1 | · | · | · | · |
| J••• S•••••• I••••••••• L••••• | Single family office | Effingham, IL | 1 | · | · | 1 | · | · |
| P••••••• W••••• P••••••• | Outsourced family office provider | Itasca, IL | 1 | · | · | 3 | 13F $220M | Aug 6, 2026 |
| E••••• G•••• I••••••••• | Family investment company | Chicago, IL | 20 | 1 | · | 27 | · | · |
| B•• F••••• O•••••• L•• | Outsourced family office provider | Chicago, IL | 1 | · | · | 7 | RAUM $10.0B | Jan 28, 2026 |
| T•• G•••• L•• | Family investment company | Chicago, IL | 9 | 2 | Financial services (1 deal) | 25 | · | · |
| W••••••••• C•••••• P••••••• | Single family office (probable) | Chicago, IL | 3 | 1 | Industrial services (stated), Manufacturing (stated), Transportation and logistics (stated), +1 more | 3 | · | Jun 11, 2025 |
| M••••••• O••••• | Family investment company | Chicago, IL | 3 | 26 | Healthcare services (5 deals), Life sciences (4 deals), Hospitality and leisure (3 deals), +7 more | 5 | · | Jan 1, 2021 |
| B•••• C•••••• | Single family office (probable) | Schaumburg, IL | 2 | 1 | Manufacturing (1 deal) | 3 | · | Jan 1, 1978 |
| S•••• C••••••• L•• | Single family office (probable) | Chicago, IL | 4 | 1 | · | 6 | · | · |
| M•••••• P••••••• C•••••• L•• | Single family office (probable) | Chicago, IL | 2 | 1 | · | 2 | · | Jan 1, 2012 |
| S•••••• E•••••• | Single family office (probable) | Chicago, IL | 1 | 1 | · | 3 | · | Oct 23, 2014 |
| P••••••• F••••• O••••• L•• | Single family office (probable) | Chicago, IL | · | · | · | · | Foundations $2.3B | · |
| S••• P•••••• W••••• G••••• L•• | Outsourced family office provider | Oakbrook Terrace, IL | 3 | · | · | 5 | 13F $222M | Aug 6, 2026 |
| A••••• F••••• P••••••• L•• | Candidate | Skokie, IL | · | · | · | · | Foundations $706,137 | · |
| C•••••• F••••• O••••• | Candidate | Naperville, IL | · | · | · | · | Foundations $56.5M | · |
| G•••• B•• M••••••••• C•••••• | Candidate | Lake Bluff, IL | · | · | · | · | Foundations $98.5M | · |
| M• I••••••••• L•• | Candidate | Chicago, IL | · | · | · | · | Foundations $33.4M | · |
| A••••• I••••••••• G•••• N• a• | Candidate | Chicago, IL | · | · | · | · | Foundations $6.2M | · |
| A••••••• M••••••••• S•••••• | Candidate | Chicago, IL | · | · | · | · | Foundations $9.8M | · |
| G••• C•••• A•••• M••••••••• L•• | Candidate | Chicago, IL | · | · | · | · | Foundations $29.4M | · |
| H••••• H••••••• | Candidate | Chicago, IL | · | · | · | · | Foundations $306M | · |
| K•• G•••• L•• | Candidate | Chicago, IL | · | · | · | · | Foundations $6.6M | · |
| R•• P••••••• L•• | Candidate | Lake Forest, IL | · | · | · | · | Foundations $35.0M | · |
| H•• M•••••• L•• | Candidate | Chicago, IL | 1 | 1 | · | 1 | 13F $10.3M | Feb 10, 2026 |
| S•••••••• M••••••••• L•• | Candidate | Lake Forest, IL | 1 | · | · | 1 | 13F $196M | Aug 12, 2026 |
| T••••••••• H••••••• L• | Candidate | Chicago, IL | · | · | · | 1 | 13F $136M | Jul 21, 2026 |
| B•• • M•• P••••••• | Candidate | Chicago, IL | · | · | · | · | Foundations $2.0M | · |
| A••• I••••••••• M••••••••• I•• | Candidate | Northbrook, IL | · | · | · | · | Foundations $48,397 | · |
| B•••••• H••••••• I•• | Candidate | Chicago, IL | · | · | · | · | Foundations $3.3M | · |
| B• D••• H••••••• I•• | Candidate | Burr Ridge, IL | · | · | · | · | Foundations $98,368 | · |
| E•••••••• A•••• M••••••••• L•• | Candidate | Chicago, IL | · | · | · | · | Foundations $9.5M | · |
| G• P••••••• L•• | Candidate | Park Ridge, IL | · | · | · | · | Foundations $39,320 | · |
| H••• G•••• L• | Candidate | Deerfield, IL | · | · | · | · | Foundations $4.3M | · |
| M•••• C•••••• L••••••• C••• | Candidate | Oakbrook Ter, IL | · | · | · | · | Foundations $3.3M | · |
| S••• C•••• V••••••• L•• | Candidate | Oak Brook, IL | · | · | · | · | Foundations $1.8M | · |