Company lists · Data verified August 2026

Top 25 Ad tech platforms based in San Francisco, United States

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 124 companies tracked

There are 124 ad tech platforms headquartered in San Francisco, United States (RevenueBase, August 2026). RevenueBase tracks 4,561 professional contacts across them, including 2,029 with verified work emails and 888 with mobile numbers. New York is the largest hub.

This list covers ad tech platforms headquartered in San Francisco, 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.

124Companies

4,561Contacts tracked

2,029Verified emails

888Mobile numbers

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The 25 largest ad tech platforms based in San Francisco, United States

Ranked by team size

Top 25 of 124 ad tech platforms based in San Francisco, 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	RTB House	San Francisco, CA	1,001-5,000	1,339	1,008
2	SKAI	San Francisco, CA	501-1,000	565	407
3	Tatari	San Francisco, CA	51-200	308	185
4	HAUS	San Francisco, CA	51-200	283	106
5	Publica By IAS	San Francisco, CA	51-200	123	32
6	JAMPP	San Francisco, CA	51-200	116	65
7	ZEDO	San Francisco, CA	201-500	108	1
8	BILLO	San Francisco, CA	11-50	90	22
9	Pointroll, A Tegna Company	San Francisco, CA	201-500	53	2
10	Kontera	San Francisco, CA	501-1,000	53	1
11	Lifestreet	San Francisco, CA	51-200	46	20
12	Omneky	San Francisco, CA	11-50	42	14
13	Adsgency AI	San Francisco	11-50	40	15
14	Cadreon	San Francisco, CA	201-500	38	2
15	Demand Local	San Francisco, CA	11-50	34	27
16	Tenjin	San Francisco, CA	11-50	30	16
17	Admybrand	San Francisco, CA	51-200	29	2
18	Creatopy	San Francisco, CA	51-200	21	6
19	EMODO	San Francisco, CA	51-200	16	5
20	Atria AI	San Francisco, CA	11-50	14	3
21	Playdigo	San Francisco, CA	11-50	13	3
22	KADEN	San Francisco, CA	11-50	12	8
23	Spot-On	San Francisco, CA	11-50	11	2
24	Azarus	San Francisco, CA	11-50	10	3
25	Cometads	San Francisco, CA	11-50	6	4

Showing 25 of 124 ad tech platforms based in San Francisco, United States

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Ad tech platforms based in San Francisco, United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 401 HQs

888Contacts with mobile numbers

14Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 San Francisco, 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; 14 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 San Francisco, United States?

There are 124 ad tech platforms headquartered in San Francisco, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

RTB House, headquartered in San Francisco, 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 2,029 verified decision-maker contacts tracked across these 124 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.