Best AdTech Companies in Seattle, United States
The 36 best AdTech companies in Seattle, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Swiftly.
Ranked: Best AdTech companies in Seattle
| # | Company | Disclosed funding | Last round | Stage | Employees | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Swiftly 🦄 Provider of retail technology platform for grocers and consumer brands | $220M | 47 mo ago | Series C | 151 | 2017 | WebflowApple iCloud MailMicrosoft 365+33 | — | — |
| 2 | Mmetrics Mobile media measurements platform. | $18M | 251 mo ago | Acquired | — | 2004 | — | — | — |
| 3 | AdReady Self-Serve Platform for Programmatic Creatives | $18M | 170 mo ago | Acquired | 27 | 2006 | — | 6 patents Real-time heuristic-driven optimization of online advertising campaign elements | — |
| 4 | mixpo Mixpo provides video advertising solutions for media companies to execute cross-screen and cross-social video… 37Funding top 41%Market bottom 42%Growth bottom 42%Global bottom 39% All 5 signals ▾Fundingtop 41% Marketbottom 42% Growthbottom 42% Globalbottom 39% Newsbottom 27% Funding: Raised $14.9M · 4 rounds over 20 yrs (0.2/yr) Market: 58 employees rank vs industry peers · Fliar Intelligence Index 37/100 | $15M | 122 mo ago | Acqui-Hired | 58 | 2002 | — | — | — |
| 5 | Placed Location Analytics and Targeting platform | $14M | 147 mo ago | Acquired | 381 | 2011 | RubySalesforceRuby on Rails+11 | 18 patents Patents concentrated in computing, sensing & instrumentation | — |
| 6 | 5to1 Publisher-programmed advertising platform | $13M | 190 mo ago | Acquired | 19 | 2009 | — | — | — |
| 7 | Zumobi Mobile content marketing platform | $12M | 233 mo ago | Series A | 13 | 2007 | — | 51 patents Dynamic mobile content adaptation and delivery platforms for personalized app experiences | — |
| 8 | Mega Provider of AI-powered SEO and paid advertising agents for startups and SMBs | $12M | 6 mo ago | Series A | — | 2024 | Framer SitesGoogle CloudReact+21 | — | — |
| 9 | Boltive Platform offering ad blocker software | $7M | 48 mo ago | Series A | 22 | 2016 | WebflowAmazon Web Serviceslit-html+13 | — | — |
| 10 | PushSpring Mobile app data management platform | $7M | 133 mo ago | Series A | 27 | 2013 | — | 3 patents Context-aware mobile device/user profiling for personalized services and analytics | — |
| 11 | Downstream Cloud based advertisement campaign management platform for amazon sellers | $6M | 79 mo ago | Acquired | 11 | 2017 | — | 3 patents Automated PCB manufacturing release documentation and template generation system | — |
| 12 | Market Fish Marketing automation platform for enterprises | $6M | 159 mo ago | Series A | 6 | 2008 | — | — | — |
| 13 | Local Marketers Straightforward marketing strategies to drive demand and increase revenue | $5M | 217 mo ago | Deadpooled | — | 2005 | — | — | — |
| 14 | Placements Omnichannel platform for streamlined ad sales and marketing operations | $4M | 105 mo ago | Seed | 28 28 → 64 (+129%) | 2012 | WebflowGSAPSplide+16 | 8 patents Programmatic digital advertising campaign management and workflow automation platform | — |
| 15 | Ampd Online ad automation solution provider | $4M | 102 mo ago | Seed | 31 | 2015 | — | 2 patents Industrial grating fastening systems for structural installations | — |
| 16 | Artifact Technologies Developer of social media enhancing shared experiences | $3M | 137 mo ago | Seed | 3 | 2011 | — | — | — |
| 17 | MobileDevHQ App Store Optimization and Intelligence Solution for enterprises | $650K | 164 mo ago | Acqui-Hired | — | 2009 | — | — | — |
Top 12 AdTech companies in Seattle
#1
Series A · Seattle, Washington · founded 2024$11.5Mraised▾
Provider of AI-powered SEO and paid advertising agents for startups and SMBs. These agents autonomously research, analyze, execute, and improve marketing campaigns. Human oversight is provided for complex tasks, ensuring accuracy and strategic direction. The platform offers a simple dashboard to track agent activity, approve tasks, and monitor key performance indicators. Integration with various data sources allows for comprehensive performance analysis. This service aims to provide cost-effective solutions for businesses seeking to enhance their online presence and return on ad spend.
- Mar 2026Series A$11.5M
#2
Swiftly 🦄Series C · Seattle, Washington · founded 2017 · 151 employees$220Mraised▾
Provider of retail technology platform for grocers and consumer brands. The platform offers solutions for audience optimization, alcohol cashback, and retail media networks. It provides tools to personalize content, enhance customer engagement, and improve targeting across digital touchpoints. The platform aims to help retailers and brands connect with shoppers and increase sales.
- Sep 2022Series C$100M
- Mar 2022Series B$100M
- Sep 2019Seed$15.6M
#3
Series A · Seattle, Washington · founded 2016 · 22 employees$7.5Mraised▾
Platform offering ad blocker software. The platform offers tools to advertisers and publishers to identify and block irrelevant ads. It leverages technology that monitors and detects privacy compliance issues and data leakage. It offers ad-level data that indicates the ads to be removed and delivers the information to the network partners.
#4
Acquired · Seattle, Washington · founded 2006 · 27 employees$17.8Mraised▾
AdReady is an advertising technology company focused on making online display advertising accessible and effective for advertisers of all sizes. AdReady provides a proprietary platform that combines the efficiency and hyper-targeting of programmatic media with compelling and relevant creatives. Also provides a white-label solution to create a branded, client-facing interface for agencies and advertisers. Acquired by CPXi in October 2013.
- Jun 2012Series C$507K
- Apr 2010Series C$5.3M
- Dec 2007Series B$10M
- Jul 2007Series A$2M
#5
Acquired · Seattle, Washington · founded 2009 · 19 employees$12.8Mraised▾
5to1 is a self-served advertising platform which connects advertisers with publishers for placing relevant ads on publishers' web pages. Collaborates with publishers to convert unsold inventory to premium & programmable inventory. Empowers the publishers for pricing and placement of ads. Was acquired by Yahoo in 2011.
- Nov 2010Series B$6.5M
- Oct 2010Conventional Debt$600K
- Jun 2010Series A$1.8M
- Jun 2009Series A$2.5M
#6
Acquired · Seattle, Washington · founded 2004$18Mraised▾
M:Metrics is a mobile application traffic and media measurement and data firm. Can track mobile visitors, page views, ads clicked and many other metrics. Offers three products: MobiLens - a monthly online survey that captures overall mobile phone usage; MeterDirect- An on-device meter that passively measures the mobile internet behavior and media consumption; M:Ad- Mobile advertising tracking service to monitor clickable display ads to find the leading advertisers. Acquired by comScore in May 2008 for $44.3M and options.
- Oct 2005Series B$7M
- 2004Series A$11M
#7
Acquired · Seattle, Washington · founded 2017 · 11 employees$6.2Mraised▾
Cloud based advertisement campaign management platform for amazon sellers. The platform helps advertisers in optimizing ad campaigns and uses search marketing to improve ROI. It also enables users to automate the ad investment and increase search traffic. The dashboard and ML tools help in analyzing and monitoring the performances of ad campaigns.
- Feb 2020Seed$300K
- May 2019Seed$2M
- Apr 2019Seed$1.8M
- Aug 2018Seed$1.9M
#8
Acqui-Hired · Seattle, Washington · founded 2002 · 58 employees$14.9Mraised▾
Provider of a creative management platform intended to make ad production simple and digital advertising smart. The company's creative management platform enables publishers and marketers to easily build, manage and measure compelling video and rich media ad campaigns, helping them to sell, produce and manage better campaigns.
#9
Acquired · Seattle, Washington · founded 2011 · 381 employees$13.8Mraised▾
Placed is a location-driven insights and mobile ad intelligence platform providing reports on consumers’ offline behaviors. Connecting the physical and digital worlds, Placed gives brands, agencies, publishers and ad networks the ability to target location at scale, measure the offline impact of mobile ads, and deliver actionable insights into consumer behavior.
- Jun 2014Series B$10M
- Mar 2012Series A$3.4M
#10
Series A · Seattle, Washington · founded 2007 · 13 employees$12Mraised▾
Zumobi provides mobile content marketing solutions. Brands leverage the Zumobi Brand Integration (Zbi) Platform to run dynamic Mobile Content Hubs that drive increased customer engagement, activation and conversion in their native smartphone and tablet apps. Zbi Platform also provides visibility into content consumption patterns enabling marketers to enhance their customer profiles with preference data and optimize their cross-channel marketing efforts.
- Mar 2007Series A$12M
#11
Series A · Seattle, Washington · founded 2013 · 27 employees$6.7Mraised▾
PushSpring Provides mobile audience platform for mobile app owners to target and engage their customers. It segments an app's users based on demographic data like age, gender and location, customer lifetime value and their activity in the app Pushspring Personas to run in-app messaging and push notification campaigns as well as retarget them on other apps installed on their phone. Raised angel funding in Jun 2014 from undisclosed investors.
- Jul 2015Series A$6.7M
- Jun 2014Conventional Debt$1.5M
#12
Series A · Seattle, Washington · founded 2008 · 6 employees$6Mraised▾
Marketing automation platform for enterprises. The platform allows marketers to build and execute lead-generation campaigns using 3rd party marketing lists. Using patented search algorithms, the tool allows users to discover targeted customer lists, build marketing campaigns, execute the campaign, and measure the performance in real-time.
- 2013Series A—
- May 2011Series A$4.5M
- Jan 2011Seed—
- Sep 2010Seed$1.5M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of AdTech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.