Company lists · Data verified August 2026

Top 25 Ad tech software companies based in Los Angeles, United States

Name: Ad tech software companies based in Los Angeles, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 77 companies tracked

There are 77 ad tech software companies headquartered in Los Angeles, United States (RevenueBase, August 2026). RevenueBase tracks 2,325 professional contacts across them, including 982 with verified work emails and 734 with mobile numbers. New York is the largest hub.

This list covers ad tech software companies headquartered in Los Angeles, 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.

77Companies

2,325Contacts tracked

982Verified emails

734Mobile numbers

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The 25 largest ad tech software companies based in Los Angeles, United States

Ranked by team size

Top 25 of 77 ad tech software companies based in Los Angeles, 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	MGID	Los Angeles, CA	501-1,000	571	225
2	Videoamp	Los Angeles, CA	201-500	568	306
3	Admedia	Los Angeles, CA	201-500	238	82
4	Tvscientific	Los Angeles, CA	51-200	156	110
5	Causal	Los Angeles, CA	51-200	76	58
6	Veritone ONE	Los Angeles, CA	51-200	50	1
7	Mobusi	Los Angeles, CA	201-500	43	1
8	Opera Mediaworks	Los Angeles, CA	201-500	40	2
9	Adquick	Los Angeles, CA	11-50	33	29
10	Tubemogul, INC	Los Angeles, CA	501-1,000	33	2
11	True X	Los Angeles, CA	51-200	27	3
12	Opt-Intelligence	Los Angeles, CA	11-50	27	3
13	Peak Ventures	Los Angeles, CA	11-50	26	19
14	iris.tv	Los Angeles, CA	11-50	26	14
15	Grapeseed Media	Los Angeles, CA	51-200	25	16
16	W4	Los Angeles, CA	51-200	22	6
17	Ventrix Advertising	Los Angeles, CA	11-50	22	1
18	Dial-Up Media	Los Angeles	11-50	15	8
19	Citizennet, A Condé Nast Company	Los Angeles, CA	11-50	14	8
20	Milkmoney	Los Angeles, CA	11-50	14	7
21	Tylie AD Solutions A 7miles Global Company	Los Angeles, CA	11-50	11	4
22	Cpmstar	Los Angeles	11-50	10	6
23	Vueplanner	Los Angeles, CA	11-50	9	7
24	Modern Formula Mofo	Los Angeles, CA	11-50	9	3
25	Duke Digital Group	Los Angeles, CA	11-50	8	1

Showing 25 of 77 ad tech software companies based in Los Angeles, United States

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Ad tech software companies based in Los Angeles, United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 318 HQs

734Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Ad tech software companies by metro in the United States

Metro	Companies
Ad tech software companies in New York	318
Ad tech software companies in San Francisco	89
Ad tech software companies in Los Angeles	77
Ad tech software companies in Miami	60
Ad tech software companies in Chicago	40
Ad tech software companies in Sheridan	37
Ad tech software companies in Denver	35

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 software companies”, with match quality audited by blind human judging, and headquartered in Los Angeles, 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; 4 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 software companies are there based in Los Angeles, United States?

There are 77 ad tech software companies headquartered in Los Angeles, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

MGID, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most ad tech software companies?

New York leads with 318 headquartered companies, followed by San Francisco (89) and Los Angeles (77).

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 982 verified decision-maker contacts tracked across these 77 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.