14 Nov 2026 · TrustList Editorial
California proposes independent audits for data brokers from 2028
CalPrivacy's notice also amends the data broker registration and DROP rules; written comments close at 5 p.m. Pacific on 6 January 2027,…
52 of 134 advertising companies ranked on evidence in the Q4 2026 edition.
Between them, the 134 best-ranked of these 138 advertising companies cover advertising (37), creative (34), consumer products & services (28) and business services (25). They also list work in Los Angeles, San Diego, New York and York. 134 of them have written a profile you can read before you get in touch.
TrustList ranking
Q4 2026 edition
52 of 134 advertising companies ranked on evidence held on 12 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.
Positions are fixed for the quarter; the next edition is due in January 2027.

Advertising · Branding · Video · Also in Hamilton and Belize
Ink Refuge is a small full-service digital agency based in Orange County, California.
On record: Based in Orange County, California, USA

Advertising
From Folsom, California, InMotion DMA runs paid search advertising for service businesses, with the aim of putting quote requests and phone calls in front of owners who are ready…
On record: Based in Folsom, California

Energy & Natural Resources · Financial Services · Retail
Operating from Huntington Beach, California, Innocean USA is the US unit of the wider Innocean network and a full service ad agency.
On record: Based in Huntington Beach, California

Analytics · Driving
Campaigns built on audience data are the basis of Ionic Media, a marketing and media agency with offices in Woodland Hills, California, and New York.
On record: Based in Woodland Hills, California and New York, USA

Arts, Entertainment & Music · Hospitality & Leisure · Non Profit · Also in York and New York
ITAL/C is a multidisciplinary creative studio based in Los Angeles, California. Its designers build brands from the ground up and steer established brands in new directions.
On record: Based in Los Angeles, California, USA

Januaryfall is a graphic and web design practice in Davis, California, run by a single designer. It produces custom print and digital work for businesses.
On record: Based in Davis, California, USA

Jon Byk Advertising, which trades as Byk Advertising, is based in Los Angeles and places the recruitment advertisements that employers must run when they seek permanent labor…
On record: Based in Los Angeles, California, USA

Arts, Entertainment & Music · Advertising & Marketing · Business Services
From Pasadena, California, Kaizen Sigma runs social media, search, websites and paid advertising for brands that want one team to handle their marketing.
On record: Based in Pasadena, California
On record: Based in Los Angeles, California

Knighthood Studio is a small marketing agency in Orange County, California.
On record: Based in Orange County, California

Energy & Natural Resources · Hospitality & Leisure · Business Services · Also in San Francisco
Lamb Consulting is a marketing, advertising and web and graphic design firm run by Debbie Lamb, who has more than 20 years of experience in marketing and project management for…

Content Marketing · Lead Generation · Analytics · Also in York and New York
Lead Marvels operates an online meeting point for professional associations, their members and B2B marketers.

Partners · Also in Newport
Leadstak is a pay-per-lead marketing agency based in Newport Beach, California.
On record: Based in Newport Beach, California, United States

Advertising · SEO · Internet · Also in Detroit and Manhattan
Legal Marketing Plus is a digital marketing agency that works only with law firms.
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Every other way we rank advertising companies, by what they do and where they are.
Articles on this subject first, then the newest.
14 Nov 2026 · TrustList Editorial
CalPrivacy's notice also amends the data broker registration and DROP rules; written comments close at 5 p.m. Pacific on 6 January 2027,…
13 Nov 2026 · TrustList Editorial
Crosspoint Capital and Forgepoint Capital co-lead the round, taking the Los Angeles company's total to $57.6 million as it expands its AI…
13 Nov 2026 · TrustList Editorial
Nvidia's board names its first independent chair, Harvey C. Jones, and keeps third-quarter results on 17 November as it searches inside and…
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