Sune Alstrup (Johansen)

Deep Tech Investor & Entrepreneur

📍 Copenhagen, Capital Region, Denmark🔄 Updated September 2026💼 28 investments📅 22 years investing🗓 Last invested Dec 2025𝕏 @upgrade_to_unlock
VC🌍 Denmark20+ investmentsInvested this year
28
Total investments
14
Early stage
5
Mid stage
3
Late stage
22y
Years active

Portfolio

26 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
Dec 2025
North Propulsion delivers chemical propulsion systems for microsatellites. This high thrust system enables civil and defence satellite missions with: up to 20x faster deployment maneuvering, instant collision avoidance with no heat-up time, and dV-efficient deorbiting. The system is specifically designed for high-volume production to unclog the satellite propulsion supply chain - one of the biggest bottlenecks in upstream space.
Investor
Jan 2025
Hybird emerged from frustration with traditional electricity monitoring, which lacked detailed insights. Now, Hybird tracks electricity usage at the source level, making it easier to save energy, cut costs, and reduce your CO2 footprint—all at a comparable cost to traditional panels. Hybird offers source-level transparency in electrical consumption, driving energy management to new levels of efficiency through enhanced control and knowledge.
Advisor & Investor
Dec 2024
Wifi replaced ethernet cables. Bluetooth replaced audio cables. We are replacing the last cable: power. Willo is working closely with several industries to move power off the cable and into the air. Our focus is real environments - factories, warehouses, offices - where uptime matters. If you build devices, run fleets, or want to help ship this technology at scale, we’d like to help you improve.
Investor
Sep 2024
MAKIINA is building the hardware and software stack for physical intelligence: modular, low-cost, scalable, and made in Finland. From drone motors, actuators, power electronics, sensor units, perception stacks, to a breakthrough AI robotics foundation model, each piece is built like LEGO blocks so they fit together into different form factors of physical AI agents, affordably and at scale.
Investor
May 2024
VoxelSensors develops groundbreaking sensing technology for Spatial and Empathic interfaces and Mobile, XR, and industrial applications. Based on VoxelSensors’ Single Photon Active Event Sensor (SPAES), VoxelSensors’ PERCEPT technology combines unparalleled low-power, low-latency eye tracking and spatial awareness capabilities. VoxelSensors’ PERCEPT enhances wearables and mobile devices with empathic abilities to understand user attention and intent, delivering an augmented reality experience that feels natural to us. By transcending the experience barrier with unprecedented levels of immersion and interaction, VoxelSensors is set to unlock the full potential of immersive and autonomous experiences and AI assistants. VoxelSensors’ PERCEPT enables devices to become more intuitive, responsive, and empathic, fundamentally transforming user experiences in smartphones, wearables, and industrial applications. To learn more, visit us at https://voxelsensors.com.
Investor
Dec 2023
Between the seen and the unseen.
Investor
Dec 2023
Our mission is to make it easy to read, discuss, understand, and engage with recent discoveries, the researchers who produce them, and the companies that commercialize them.
Investor
Oct 2022
Roccamore makes comfortable high heels with insoles that shape your foot to walk as anatomically correct as possible. Scientifically validated and handmade in Italy, by some of the best shoemakers in the world, roccamore is on a mission of inspiring women to stand strong. #RoccamoreRebel
Investor
Sep 2022
Cionic is pioneering the future of movement through an advanced system that combines wearable neurotechnology, adaptive AI, and connected care. With the FDA-cleared Neural Sleeve 2 at its core, Cionic is setting a new standard for mobility care today and building toward a future where people can move further, faster, and fearlessly, across every limb and every condition.
Investor
Aug 2022
At Sensæ we develop technology that helps people manage their stress through mind+body monitoring, smart haptic biofeedback and intelligent personal coaching
Investor
Jun 2022
Rerun is the unified data layer for physical AI. Physical AI teams use Rerun to ingest multi-rate, multimodal data from teleop, fleet logs, human-data rigs, and sim, visualize episodes in realtime, query and curate with dataframes or SQL, and stream dataset mixes directly into training. One columnar store underneath the whole pipeline. No export jobs, no stale copies. SDKs in Python, Rust, and C++. Built in Rust on column-chunk storage purpose-built for multi-rate physical data. Get started: pip install rerun-sdk
Investor
Jun 2022
Doublepoint is a touch interface company. We enable upcoming computing platforms with intuitive, robust, and versatile touch-based interactions. Our first product is a machine learning algorithm that detects microgestures using smartwatch sensors and compute (prev. Port 6).
Investor
Apr 2022
IXI is redefining vision correction with the world’s first adaptive eyewear, providing seamless clarity wherever you look. Join the waitlist at ixieyewear.com.
Investor
Apr 2022
IDUN Technologies is a neurotech Start Up and our vision is to create a more connected and empathetic world using in-ear EEGs. Our Guardian brain analytics platform is a Brain-computer Interface that provides real time measurements of neuromarkers, enabling partners to improve their products and services using innovative technology. Since spinning out of the ETH Start Up programme we have been pursuing opportunities in the fields of sleep, hearing health and wellbeing and are currently running PoCs with partners in those fields. If you would like to know more or get involved in a PoC then please reach out to us here, our co-founders Simon Bachmann and Severine Gisin, or visit our website.
Investor
Apr 2021
At Skycore Semiconductors, we provide advanced semiconductor microchips for power conversion. Our proprietary technology enhances energy efficiency in AI servers, BESS, and other high-power applications, addressing the global shift towards renewable energy and electrification. By integrating key components within a microchip, we deliver cost-effective, efficient, and scalable power solutions, driving sustainable energy use for a better future.
Show all 26 investments ↓
Experience · 35 entries
All (35)
Investments (27)
Founder (5)
Board (4)
2025
Investor
Dec 2025
North Propulsion delivers chemical propulsion systems for microsatellites. This high thrust system enables civil and defence satellite missions with: up to 20x faster deployment maneuvering, instant collision avoidance with no heat-up time, and dV-efficient deorbiting. The system is specifically designed for high-volume production to unclog the satellite propulsion supply chain - one of the biggest bottlenecks in upstream space.
Investor
Jan 2025
Hybird emerged from frustration with traditional electricity monitoring, which lacked detailed insights. Now, Hybird tracks electricity usage at the source level, making it easier to save energy, cut costs, and reduce your CO2 footprint—all at a comparable cost to traditional panels. Hybird offers source-level transparency in electrical consumption, driving energy management to new levels of efficiency through enhanced control and knowledge.
2024
Advisor & Investor
Dec 2024
Wifi replaced ethernet cables. Bluetooth replaced audio cables. We are replacing the last cable: power. Willo is working closely with several industries to move power off the cable and into the air. Our focus is real environments - factories, warehouses, offices - where uptime matters. If you build devices, run fleets, or want to help ship this technology at scale, we’d like to help you improve.
Investor
Sep 2024
MAKIINA is building the hardware and software stack for physical intelligence: modular, low-cost, scalable, and made in Finland. From drone motors, actuators, power electronics, sensor units, perception stacks, to a breakthrough AI robotics foundation model, each piece is built like LEGO blocks so they fit together into different form factors of physical AI agents, affordably and at scale.
Investor
May 2024
VoxelSensors develops groundbreaking sensing technology for Spatial and Empathic interfaces and Mobile, XR, and industrial applications. Based on VoxelSensors’ Single Photon Active Event Sensor (SPAES), VoxelSensors’ PERCEPT technology combines unparalleled low-power, low-latency eye tracking and spatial awareness capabilities. VoxelSensors’ PERCEPT enhances wearables and mobile devices with empathic abilities to understand user attention and intent, delivering an augmented reality experience that feels natural to us. By transcending the experience barrier with unprecedented levels of immersion and interaction, VoxelSensors is set to unlock the full potential of immersive and autonomous experiences and AI assistants. VoxelSensors’ PERCEPT enables devices to become more intuitive, responsive, and empathic, fundamentally transforming user experiences in smartphones, wearables, and industrial applications. To learn more, visit us at https://voxelsensors.com.
Show all 35 entries ↓
Investment activity
2004–2025 · 28 investments
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