Casten Otter

Active Investor

Grundare, Delägare, Ordförande at Brain Competence

Stockholm, Stockholm County

Casten Otter, Grundare, Delägare, Ordförande at Brain Competence is an active investor based in Stockholm, Stockholm County. This profile covers what Casten Otter backs, at which stage, and how founders can reach out in 2026.

Mr. Casten Otter serves as Investment Director & Partner at GAEU Ventures. He serves as Board Member at Trippus. Mr. Otter is an Angel Investor. He serves as a Board Member at Novoplast. He serves as Chairman & Partner at Assently. Currently CEO of Brain Accounting, a leading financial services firm for fast-growing companies, and chairman of Assently, a fast-growing SaaS company in e-signing and e-identification, and Retail House, a leading advertising agency in shopper marketing, among others. Has also played a leading role in developing the Founders Alliance entrepreneurial network and mentored several entrepreneurs. Special expertise in finance, strategy, and marketing.

Investor type: Angel
Stages: Early Stage Venture
Invests in: SaaS & EnterpriseDeveloper Tools & DataManufacturing & IndustrialPropTech & Real EstateHR & Future of Work
Location: Stockholm, Stockholm County
Typical check: $500K
Past investments: 6

Notable investments

Thinkway ABDrömvärldenGAEU InternationalAssentlyRetail HouseEcolux AB

How to reach Casten Otter

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Frequently Asked Questions

What does Casten Otter invest in?

Casten Otter invests in SaaS & Enterprise, Developer Tools & Data, Manufacturing & Industrial and PropTech & Real Estate, typically at Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.