Company lists · Data verified August 2026

Top 25 Ad tech platforms based in Los Angeles, United States

Name: Ad tech platforms 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 110 companies tracked

There are 110 ad tech platforms headquartered in Los Angeles, United States (RevenueBase, August 2026). RevenueBase tracks 3,270 professional contacts across them, including 1,222 with verified work emails and 1,075 with mobile numbers. New York is the largest hub.

This list covers ad tech platforms 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.

110Companies

3,270Contacts tracked

1,222Verified emails

1,075Mobile numbers

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

Ranked by team size

Top 25 of 110 ad tech platforms 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	Target Media Partners	Los Angeles, CA	501-1,000	197	6
5	Digital Remedy	Los Angeles	51-200	192	124
6	Tvscientific	Los Angeles, CA	51-200	156	110
7	Causal	Los Angeles, CA	51-200	76	58
8	Adcolony	Los Angeles, CA	201-500	67	11
9	Vizio ADS	Los Angeles	201-500	52	39
10	Veritone ONE	Los Angeles, CA	51-200	50	1
11	Mobusi	Los Angeles, CA	201-500	43	1
12	Adquick	Los Angeles, CA	11-50	33	29
13	Tubemogul, INC	Los Angeles, CA	501-1,000	33	2
14	True X	Los Angeles, CA	51-200	27	3
15	Opt-Intelligence	Los Angeles, CA	11-50	27	3
16	Peak Ventures	Los Angeles, CA	11-50	26	19
17	iris.tv	Los Angeles, CA	11-50	26	14
18	Grapeseed Media	Los Angeles, CA	51-200	25	16
19	W4	Los Angeles, CA	51-200	22	6
20	Ventrix Advertising	Los Angeles, CA	11-50	22	1
21	Optikal	Los Angeles, CA	11-50	22	1
22	Brill Media	Los Angeles, CA	11-50	21	10
23	Blue Wing ADS	Los Angeles, CA	11-50	19	3
24	brid.tv	Los Angeles, CA	11-50	16	8
25	Dial-Up Media	Los Angeles	11-50	15	8

Showing 25 of 110 ad tech platforms based in Los Angeles, United States

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

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 401 HQs

1,075Contacts with mobile numbers

5Emails 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 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; 5 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 Los Angeles, United States?

There are 110 ad tech platforms 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 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 1,222 verified decision-maker contacts tracked across these 110 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.