General Info
Memduh Karakullukcu, an investor at D4 Ventures, has a diverse professional background. He is the Founding Chairman of Kroton, a consulting company specializing in the design and launch of new institutions, offering advisory services at the intersection of international politics, global economics, and technology. Memduh is also the Co-Conceptualizer at Vuslat Foundation, and The Catalyst at Society for the Purposefully Purposeless (SoPP). As a Founding Board Member and President at Global Relations Forum, he has been instrumental in international affairs and global issues. Memduh is a Founding Partner at Kanunum.com, a consultancy firm focusing on legal information services. His career includes roles such as Founding Managing Director at Istanbul Technical University ARI Teknokent and Teaching Fellow in Finance at The London School of Economics. With this rich experience, Memduh Karakullukcu demonstrates a deep commitment to diverse sectors and strategic initiatives.
Location: Turkey
Country: Türkiye
Industries: Not available
Investment Regions: EU
Investment Stages: pre-seed, seed
Website: https://www.d4ventures.com/
angel-individual
EU
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🤖 AI Activity Report
Status: very-active
AI Reasoning: Search results show D4 Ventures portfolio and activity with investments in 2023 including RubiBrands (Oct 4, 2023) and Craftgate (Aug 23, 2023). Tracxn shows 0 investments in 2024 and 2025 YTD, but D4 had investments in 2023. Memduh Karakullukcu is listed as Venture Partner at D4 Ventures, and D4’s most recent known investment where he could be associated is RubiBrands on Oct 4, 2023. Calculating from Nov 1, 2025, the last known investment date Oct 4, 2023 is 24 months and 28 days ago, which would classify as low-active. However, additional sources (company press and portfolio acquisitions) indicate D4 had involvement with Byte Trading acquired Feb 14, 2025 and Banxware Series A on Jun 3, 2025, and Navro Apr 29, 2025 where D4 is listed – these are within 6 months of Nov 1, 2025. Specifically, Banxware (June 3, 2025) and Navro (Apr 29, 2025) are investments in 2025. Since Memduh is a Venture Partner at D4 Ventures and the fund has investments less than 6 months prior to Nov 1, 2025 (e.g., Banxware Jun 3, 2025; Navro Apr 29, 2025), classify as very-active.
Angel activity thresholds:
Low Activity – Only known angel investments more than 12 months ago.
Active – Known angel investments between the last 12 and 6 months.
Very Active – Known angel investments in the last 6 months.
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