01
Portfolio
Five companies.
One group.
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02
Dev
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Serif Digital
We craft campaigns that move people in the real world. From billboards to direct mail, we make brands impossible to ignore.
Print Advertising
Billboard Campaigns
Event Marketing
Direct Mail
04
CALYSMA | Digital Marketing
We turn scroll-stopping content into measurable growth. Strategy, creation, and performance — all under one roof.
Social Media Management
Content Creation
Paid Advertising
Analytics
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Serif Holdings / Built for durable growth
“Build structure before headcount. Protect independence while governing as one group.”Explore the portfolio
Principles
Clarity.
Control.
Scale.
Governance is centralized. Execution is decentralized. Each company builds its own identity, customers, and operating focus.
Select a principle to focus.
Ready to build something?
We match you with the right subsidiary — advertising, technology, design, or marketing.