Company lists · Data verified August 2026

Top 25 Ad tech platforms based in Chicago, United States

Name: Ad tech platforms based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 50 companies tracked

There are 50 ad tech platforms headquartered in Chicago, United States (RevenueBase, August 2026). RevenueBase tracks 2,626 professional contacts across them, including 1,422 with verified work emails and 1,055 with mobile numbers. New York is the largest hub.

This list covers ad tech platforms headquartered in Chicago, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

50Companies

2,626Contacts tracked

1,422Verified emails

1,055Mobile numbers

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The 25 largest ad tech platforms based in Chicago, United States

Ranked by team size

Top 25 of 50 ad tech platforms based in Chicago, United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	BASIS	Chicago, IL	501-1,000	886	563
2	Innovid	Chicago, IL	501-1,000	640	430
3	JUN Group	Chicago, IL	51-200	200	65
4	Nativo INC	Chicago, IL	51-200	118	80
5	BIG Happy	Chicago, IL	51-200	104	63
6	DOE Media	Chicago, IL	51-200	85	13
7	VEVE	Chicago, IL	51-200	32	18
8	Aroscop INC	Chicago, IL	51-200	19	6
9	Accuen	Chicago, IL	51-200	18	3
10	Next Click Partners	Chicago, IL	11-50	17	11
11	Stellarmobi	Chicago	1-10	11	1
12	Compliant	Chicago, IL	1-10	10	6
13	Allied Digital Strategies	Chicago, IL	1-10	8	6
14	Globetal	Chicago, IL	11-50	7	3
15	Tincre	Chicago, IL	1-10	7	3
16	Arkon Group	Chicago, IL	1-10	6	4
17	Wastenot	Chicago, IL	1-10	6	2
18	Sonicmessenger LLC	Chicago, IL	1-10	5	1
19	Svey Media	Chicago, IL	1-10	4	3
20	Incharge	Chicago, IL	1-10	4	2
21	Needle's EYE Media	Chicago, IL	1-10	3	2
22	Terroir Consulting	Chicago, IL	1-10	2	1
23	Mufasa Media	Chicago, IL	1-10	2	1
24	CTV Blueprint	Chicago, IL	1-10	2	1
25	MPW Digital	Chicago, IL	1-10	1	1

Showing 25 of 50 ad tech platforms based in Chicago, United States

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Ad tech platforms based in Chicago, United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 401 HQs

1,055Contacts with mobile numbers

10Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Ad tech platforms by metro in the United States

Metro	Companies
Ad tech platforms in New York	401
Ad tech platforms in San Francisco	124
Ad tech platforms in Los Angeles	110
Ad tech platforms in Miami	76
Ad tech platforms in Chicago	50
Ad tech platforms in Sheridan	42
Ad tech platforms in Denver	37

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “ad tech platforms”, with match quality audited by blind human judging, and headquartered in Chicago, United States.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Contact records re-verify on a rolling cadence; 10 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many ad tech platforms are there based in Chicago, United States?

There are 50 ad tech platforms headquartered in Chicago, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

BASIS, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most ad tech platforms?

New York leads with 401 headquartered companies, followed by San Francisco (124) and Los Angeles (110).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,422 verified decision-maker contacts tracked across these 50 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.