Siem De Jong

Former professional football player, transitioning to strategic sports leader. “From pitch to boardroom”

📍 Netherlands🔄 Updated October 2026💼 6 investments📅 10 years investing🗓 Last invested Nov 2022
VC🌍 Netherlands
6
Total investments
2
Early stage
1
Mid stage
0
Late stage
10y
Years active

Portfolio

5 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Private Investor
Nov 2022
Sokito is the groundbreaking new football brand. We create lightweight, handcrafted, performance football boots. They’re more comfortable than a 5-0 win. And they’ll fit your foot like a glove. But it’s where they come from that really makes the difference. We use innovative, high performance eco materials, world-first recycling capabilities and industry leading technology. Which makes us the world’s most eco-friendly football boot brand. The final result? Maximum impact on the pitch. Not the planet. Welcome to Sokito. The new football boot brand that’s here to change the game.
Investeerder
Oct 2022
We are championing for a fair, safe and sustainable fashion industry, by creating the best products while putting the people and the planet at the forefront. Why wait until 2050, when we can start now?
Investeerder
Jun 2022
APEX is a specialist investment firm focused on the global Sports industry. Backed by world-class athletes and institutional partners, combining capital, operational expertise, and market-leading ecosystem access to unlock unique opportunities and drive long-term value. For more information, please visit www.apex-cp.com.
Investeerder
May 2021
Teamplayers is a sports marketing agency specialized in impact-driven partnerships. We create and execute purpose led strategies, concepts & partnerships to help progressive brands, sport organizations and athletes remain relevant and thriving in the age of social good.
Investeerder
Jan 2018
Sociaballs is an online platform founded by social media experts and football players. We give sports organizations and their athletes easy access to content and bring sponsor relations to the next level. Allowing you to bring a unified and powerful story to the fans.
Experience · 6 entries
All (6)
Investments (6)
2022
Private Investor
Nov 2022
Sokito is the groundbreaking new football brand. We create lightweight, handcrafted, performance football boots. They’re more comfortable than a 5-0 win. And they’ll fit your foot like a glove. But it’s where they come from that really makes the difference. We use innovative, high performance eco materials, world-first recycling capabilities and industry leading technology. Which makes us the world’s most eco-friendly football boot brand. The final result? Maximum impact on the pitch. Not the planet. Welcome to Sokito. The new football boot brand that’s here to change the game.
Investeerder
Oct 2022
We are championing for a fair, safe and sustainable fashion industry, by creating the best products while putting the people and the planet at the forefront. Why wait until 2050, when we can start now?
Investeerder
Jun 2022
APEX is a specialist investment firm focused on the global Sports industry. Backed by world-class athletes and institutional partners, combining capital, operational expertise, and market-leading ecosystem access to unlock unique opportunities and drive long-term value. For more information, please visit www.apex-cp.com.
2021
Investeerder
May 2021
Teamplayers is a sports marketing agency specialized in impact-driven partnerships. We create and execute purpose led strategies, concepts & partnerships to help progressive brands, sport organizations and athletes remain relevant and thriving in the age of social good.
2018
Investeerder
Jan 2018
Sociaballs is an online platform founded by social media experts and football players. We give sports organizations and their athletes easy access to content and bring sponsor relations to the next level. Allowing you to bring a unified and powerful story to the fans.
Show all 6 entries ↓
Investment activity
2016–2022 · 6 investments
20161201812021120223
Recent (last 2 years)Earlier