OTB Ventures is a pan-European venture capital firm focused on DeepTech startups, investing primarily at the late Seed and Series A stages. Its key verticals include SpaceTech, Enterprise Automation & AI, Cybersecurity, and FinTech Infrastructure.
Founded —
Type Venture capital 4 OTB Fund II 2024-03-20 2024-03-20 $185M USD185M finalclose oversubscribed, datecorroboratedTechCrunch2024-03-20. Earlier2022-11-22 EUR140Mfirstclose/EUR150Mtarget separate. SeriesA mostly, up-to10%Seed, >50%followon reserves.
OTB Growth Fund I 2021-07-13 2021-07-13 $60M Announced USD60M/EUR50M followonvehicle forFundI, includingUSD30MESCALAR. Structuraloverlap unresolved, notadditiveAUM.
OTB Fund I 2020-02-19 2020-02-19 $100M USD100M finalclose2020. Later2022 officialdescriptionUSD138M relationship/growthoverlap unexplained; historicalknownclose preserved, noaggregatedAUM.
OTB Space Program I 2020 2020 $22M HistoricalUSD22Mvehicle introduced2020 per2022-11-22 officialrelease; exactclosemechanics unverified.
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$3M $1M – $7M Europe $1M $100K – $10M Warsaw, Poland $2 $1 – $5 Luxembourg City, Luxembourg — — – — — — – — — — – — — — – — — — – — — — – — — — – — — — – — — — – — — — – — — — – — — — – — — — – — — — – — — — – — — — – —
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€50M 2026-06-08 Alta Ares Cherry Ventures , OTB Ventures $35M 2026-03-12 Waiv OTB Ventures , Alpha Intelligence Capital , CRB Health Tech , SISTAFUND $— 2026-02-24 Tytan Lakestar , OTB Ventures $60M 2026-01-15 Hydrosat OTB Ventures $20M 2025-10-15 MatrixSpace OTB Ventures , Marcin Hejka $6M 2025-07-15 Auriga Space Seraphim Space , Trucks Venture Capital , OTB Ventures £4M 2025-02-20 Safe Intelligence Amadeus Capital Partners , OTB Ventures , Vsquared Ventures $— 2025-01-02 apheris AI OTB Ventures $5M 2024-06-05 Synthara Vsquared Ventures , OTB Ventures , Hermann Hauser $4M 2024-03-06 Kurs Orbital OTB Ventures , Credo Ventures , Inovo.vc , Maciej Małysz $5M 2024-01-01 akirolabs OTB Ventures $6M 2023-02-21 Veridion Day One Capital , OTB Ventures $— 2023-01-19 ClearSpace Lakestar , OTB Ventures , Wojtek Walniczek $16M 2022-10-11 SettleMint OTB Ventures , Marcin Hejka $— 2022-02-03 ICEYE Seraphim Space , NewSpace Capital , OTB Ventures , Motier Ventures , True Ventures , National Security Strategic Investment Fund $12M 2022 Soter Analytics OTB Ventures $10M 2021-11-16 Hydrosat OTB Ventures $9M 2021-09-06 Fractory OTB Ventures , Marcin Hejka , Wojtek Walniczek $7M 2021 Scalarr Speedinvest , OTB Ventures $87M 2020-09-22 ICEYE Seraphim Space , Molten Ventures , Endeavor , Tesi , DNX Ventures , Space Capital , OTB Ventures $15M 2020-08-31 cosmose.ai OTB Ventures $3M 2019-06-27 Segron Credo Ventures , OTB Ventures , Marcin Hejka , Vladislav Jez $10M Unknown date Segron OTB Ventures $— Unknown date kyp.ai OTB Ventures $7M Unknown date Scalarr OTB Ventures $11M Unknown date Twentyfour Industries OTB Ventures $65M Unknown date kevin OTB Ventures $10M Unknown date Turnkey Lender OTB Ventures $30M Unknown date SPREAD OTB Ventures $20M Unknown date Timeseer.ai OTB Ventures $5M Unknown date Synthara OTB Ventures $8M Unknown date Plumerai OTB Ventures $— Unknown date Semron OTB Ventures €28M 2026-09-10 Arlequin AI OTB Ventures $— 2026 TYTAN Technologies Lakestar , OTB Ventures $12M 2022 Soter OTB Ventures $— 2019 Minit Earlybird Venture Capital , OTB Ventures $— Unknown date SPREAD AI OTB Ventures
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team@apexlogos.ai · 7 hours ago
Investment-fund research reviewed 2026-10-06. Publicly identified funds, dates, amounts and fundraising status are below. Undisclosed commitments remain unknown; this is not a complete register of private SPVs or parallel entities.
Fund sizes, dates and status
Amounts below are separate historical vehicles or statements; **do not add them to infer AUM** because ESCALAR/growth structures may overlap.
| Vehicle / metric | Amount and status | Date and evidence |
| --- | --- | --- |
| OTB Fund I / debut early-growth fund | **$100m final close** | 19 February 2020, [GPCA industry news, citing Unquote](https://www.globalprivatecapital.org/newsroom/otb-ventures-reaches-usd100m-final-close-for-debut-fund/ ). |
| Fund I later description | **$138m**, described by OTB as Fund I; relationship to original close/growth structure not fully explained | 22 November 2022, [official Fund II launch](https://otb.vc/article/otb-ventures-launches-e150m-deeptech-fund/ ). |
| OTB Growth Fund I | **$60m (€50m)** announced fund total; follow-on vehicle for Fund I companies, including $30m raised through ESCALAR | 13 July 2021, [official announcement](https://otb.vc/article/otb-ventures-launches-new-60m-e50m-fund-to-back-european-businesses-at-the-next-stage-of-growth/ ). |
| OTB Space Program I | **$22m**, historical dedicated space vehicle; individual closing mechanics not verified | OTB's 22 November 2022 announcement dates introduction to 2020; [official source](https://otb.vc/article/otb-ventures-launches-e150m-deeptech-fund/ ). |
| OTB Fund II first close and target | **€140m first close**, **€150m target**, not final size | 22 November 2022, [official launch](https://otb.vc/article/otb-ventures-launches-e150m-deeptech-fund/ ). |
| OTB Fund II final close | **$185m closed**, described as oversubscribed | [Official close announcement](https://otb.vc/article/otb-ventures-announce-their-new-185m-fund-2/ ) is undated in extracted body; contemporaneous [TechCrunch report](https://techcrunch.com/2024/03/20/otb-ventures-deep-tech/ ) is dated **20 March 2024**. |
| AUM, official firm page | **Over $350m**, all-firm AUM rather than one fund | [About](https://otb.vc/about/ ), undated. |
| More recent AUM claim | **Over €500m across funds**, in an investee's OTB boilerplate; unresolved against firm website | **10 September 2026**, [Arlequin official funding release](https://arlq.ai/news/arlequin-ai-series-a-topological-neural-networks ). |
Searched for Fund III / newer 2025–2026 fund announcements and checked current official pages. No newer separately named closed flagship fund was verified. The €500m AUM claim could indicate newer capital or revised reporting, but cannot be translated into a Fund III size. It requires firm confirmation.
Funds recorded in Adex after this review:
| Fund | Disclosed amount | Announcement / filing date |
| --- | --- | --- |
| OTB Space Program I | USD 22000000 | 2020 |
| OTB Fund I | USD 100000000 | 2020-02-19 |
| OTB Growth Fund I | USD 60000000 | 2021-07-13 |
| OTB Fund II | USD 185000000 | 2024-03-20 | SHOW MORE
team@apexlogos.ai · 8 hours ago
Match research 2026-10-06 / OTBVentures / sha256:ad9285ae45a831bf832e1cc69caf2af92a665a17cc57111dfce278bdd4eb831c / part 2 of 2
Imported completed research. Baseline Adex/Signal statements describe prior state, not independent verification. Retain cited attribution, date, currency and classification caveats.
| **MatrixSpace** | Compact portable radar plus edge AI for detection/classification of drones and other objects; sensing hardware deep tech. OTB and Raptor Group **co-led $20m Series B**. | [MatrixSpace-issued PR Newswire release](https://www.prnewswire.com/news-releases/matrixspace-completes-20m-series-b-funding-302584322.html ), **15 October 2025**. |
| **Alta Ares** | AI-enabled air-defense stack combining interceptors, radar and data fusion; physical AI/defense engineering. OTB participated in **€50m Series A**, led by Air Street. | [OTB official investment article](https://otb.vc/article/alta-ares-ai-native-air-defense-built-on-the-battlefield/ ), undated; [GICAT company press release](https://gicat.com/en/alta-ares-leve-50me-pour-devenir-la-reference-europeenne-de-la-defense-aerienne/ ) page dated 8 June 2026, body **9 June 2026**; [Sifted](https://sifted.eu/articles/alta-ares-defence-tech-50m-round ), **9 June 2026**, corroborates Series A. |
| **Arlequin AI** | Proprietary topological neural network architecture for complex evidence-linked data analysis; research-based novel AI. OTB and redalpine **co-led €28m Series A**. Performance claims remain company claims. | [Official Arlequin release](https://arlq.ai/news/arlequin-ai-series-a-topological-neural-networks ), **10 September 2026**; [OTB article](https://otb.vc/article/arlequin-ai-a-new-ai-architecture-for-critical-decision-making/ ), undated. |
Additional official portfolio evidence names **Hydrosat** (thermal satellite imagery; investment year 2021), **ClearSpace** (orbital servicing/debris removal; 2022), **Kurs Orbital** (rendezvous/docking; 2023), **ATMOS Space Cargo** (return capsules; 2024), and **Auriga Space** (electromagnetic launch; 2024). These are supported firm investments and plausible deep-tech examples, but this pass did not re-verify all individual rounds. [Official portfolio](https://otb.vc/portfolio/ ), undated. “Invested” year can predate a later public funding announcement and is not interchangeable with round date.
## Neurotech findings and boundaries
**No verified neurotech investment found in the sources checked.** Checked saved portfolio leads, official portfolio/strategy, and firm-name searches for neurotechnology, neuroscience, brain interfaces and neuromorphic investments. This is an evidence-limited finding, not a claim of no such investments anywhere.
- **Synthara** has neuroinformatics academic origins and OTB mentions hearing-aid processing as a possible application. Verified product/financing evidence concerns embedded computing silicon, not neural recording, stimulation or a brain interface. Classify as novel computing / neuroscience-adjacent provenance, not verified direct neurotech. [OTB Synthara article](https://otb.vc/article/empowering-the-future-of-embedded-chips-synthara-ag-joined-otb-portfolio-2/ ) and [portfolio](https://otb.vc/portfolio/ ), undated.
- **Arlequin's neural networks** are AI model architecture, not a biological neural interface. [Company release](https://arlq.ai/news/arlequin-ai-series-a-topological-neural-networks ), 10 September 2026.
- **Waiv** is oncology diagnostics, and **Soter Analytics** ergonomic injury prevention. Neither official description establishes neural measurement/modulation. [Portfolio](https://otb.vc/portfolio/ ), undated.
- **Brainonix** belongs to **Out The Back Ventures**, a different firm; exclude from OTB Ventures attribution. [Distinct firm's official site](https://www.outthebackventures.com/ ), undated.
## Conflicts, missing information and later Adex review
1. Preserve Fund II's final $185m close separately from €140m first close / €150m target. Latest-known fund and uncertain newer AUM should be separate fields. Fund I $100m versus later $138m and Growth Fund I structural overlap need clarification before aggregation.
2. AUM differs materially: OTB About says over **$350m**; Safe Intelligence's February 2025 investor boilerplate says over **€350m**; Arlequin's September 2026 release says over **€500m**. Currency, dates and scope are not reconciled. [Safe Intelligence source](https://safeintelligence.ai/safe-intelligence-raises-4m-to-deliver-advanced-validation-for-reliable-ai/ ).
3. Review snapshot's **Alta Ares “seed”** against verified **Series A**, and 8 June date against press-release body/reporting on 9 June. Use publication and announcement dates explicitly.
4. **Synthara** snapshot combines $6m and $11m claims; official company split is $5.5m financing / $5.9m grants. Do not count grants as an OTB-funded equity round or as OTB's contribution.
5. Review duplicate company aliases and repeated round claims before later linking entities. Waiv snapshot says Series B whereas official portfolio says current Series A; no funding-round adjudication performed here. Portfolio also misspells it “Wiav.”
6. Arlequin is a newly verified 2026 investment absent from the snapshot's investment list. Exact company ID would require later Adex review; do not invent one. Firm portfolio founding year 2023 conflicts with investee release's 2024; funding evidence does not depend on resolving that.
7. Named partner roles in portfolio are investment-team attribution, not evidence of personal investment. No Intel Capital-era transaction was credited to OTB without firm evidence.
8. This is a substantive evidence sample and strategy/fund review, not a complete audit of all 37 snapshot participations. Missing OTB check amounts, precise fund allocations, unpublished investments and neurotech exposure remain unresolved. No Adex edits are made by this research. SHOW MORE
team@apexlogos.ai · 8 hours ago
Match research 2026-10-06 / OTBVentures / sha256:ad9285ae45a831bf832e1cc69caf2af92a665a17cc57111dfce278bdd4eb831c / part 1 of 2
Imported completed research. Baseline Adex/Signal statements describe prior state, not independent verification. Retain cited attribution, date, currency and classification caveats.
# OTB Ventures
Exact ID: `OTBVentures`
Adex: https://adex.page/firms/OTBVentures
Official website: https://otb.vc/
Research date / all web sources accessed: **2026-10-06**
Status: **Complete research brief; research only, no Adex/database update.**
## Summary and identity
OTB Ventures is a European deep-tech venture investor established in 2017, with offices in Warsaw and Amsterdam. Its published entry strategy is late Seed and Series A, with follow-on investing. Strong attributable examples include ICEYE radar satellites, SEMRON and Synthara computing hardware, MatrixSpace radar, and Alta Ares air defense. The latest-known separately identified flagship close verified here is **Fund II, $185 million, March 2024**. More recent AUM statements conflict; they do not establish a new individual fund close. No verified neurotech investment found in the sources checked.
Do not conflate this firm with **Out The Back Ventures**, whose Brainonix neuromorphic investment appears in searches for “OTB.” [OTB About](https://otb.vc/about/ ) and [Out The Back Ventures](https://www.outthebackventures.com/ ) are distinct organizations (undated, accessed 2026-10-06).
## Starting evidence: Adex and NFX Signal
Read `_sources/OTBVentures.adex.json`, exact record `OTBVentures`, retrieved **2026-10-06T19:29:41.185Z** from read-only MCP Search. Baseline description identifies SpaceTech, Enterprise Automation & AI, Cybersecurity and FinTech Infrastructure, and late Seed / Series A. Check minimum, maximum and sweet spot are null. Snapshot contains 37 investment participations including ICEYE, Hydrosat, Synthara, Semron, Kurs Orbital, ClearSpace, MatrixSpace, Alta Ares and software/fintech companies. Existing research references are starting leads rather than independent confirmation. The record has duplicate aliases: Tytan / TYTAN Technologies, Soter / Soter Analytics, SPREAD / SPREAD AI, and repeated Scalarr/Segron entries. Several stages and totals need review below.
Directly read [NFX Signal firm profile](https://signal.nfx.com/firms/otb-ventures ) (undated). It identifies Warsaw, Poland / Europe and co-investors including Octopus, Credo, Molten, HV Capital and Verve. Extracted profile displayed a team heading but no detailed team or investment-stage/check-size data. The Adex snapshot cites Signal's DeepTech Pre-Seed list; list membership was not independently re-established here and does not override the official late Seed / Series A mandate. Signal provides identity/discovery context, not independent investment verification.
## Fund sizes, dates and status
Amounts below are separate historical vehicles or statements; **do not add them to infer AUM** because ESCALAR/growth structures may overlap.
| Vehicle / metric | Amount and status | Date and evidence |
| --- | --- | --- |
| OTB Fund I / debut early-growth fund | **$100m final close** | 19 February 2020, [GPCA industry news, citing Unquote](https://www.globalprivatecapital.org/newsroom/otb-ventures-reaches-usd100m-final-close-for-debut-fund/ ). |
| Fund I later description | **$138m**, described by OTB as Fund I; relationship to original close/growth structure not fully explained | 22 November 2022, [official Fund II launch](https://otb.vc/article/otb-ventures-launches-e150m-deeptech-fund/ ). |
| OTB Growth Fund I | **$60m (€50m)** announced fund total; follow-on vehicle for Fund I companies, including $30m raised through ESCALAR | 13 July 2021, [official announcement](https://otb.vc/article/otb-ventures-launches-new-60m-e50m-fund-to-back-european-businesses-at-the-next-stage-of-growth/ ). |
| OTB Space Program I | **$22m**, historical dedicated space vehicle; individual closing mechanics not verified | OTB's 22 November 2022 announcement dates introduction to 2020; [official source](https://otb.vc/article/otb-ventures-launches-e150m-deeptech-fund/ ). |
| OTB Fund II first close and target | **€140m first close**, **€150m target**, not final size | 22 November 2022, [official launch](https://otb.vc/article/otb-ventures-launches-e150m-deeptech-fund/ ). |
| OTB Fund II final close | **$185m closed**, described as oversubscribed | [Official close announcement](https://otb.vc/article/otb-ventures-announce-their-new-185m-fund-2/ ) is undated in extracted body; contemporaneous [TechCrunch report](https://techcrunch.com/2024/03/20/otb-ventures-deep-tech/ ) is dated **20 March 2024**. |
| AUM, official firm page | **Over $350m**, all-firm AUM rather than one fund | [About](https://otb.vc/about/ ), undated. |
| More recent AUM claim | **Over €500m across funds**, in an investee's OTB boilerplate; unresolved against firm website | **10 September 2026**, [Arlequin official funding release](https://arlq.ai/news/arlequin-ai-series-a-topological-neural-networks ). |
Searched for Fund III / newer 2025–2026 fund announcements and checked current official pages. No newer separately named closed flagship fund was verified. The €500m AUM claim could indicate newer capital or revised reporting, but cannot be translated into a Fund III size. It requires firm confirmation.
## Investment stages and mandate
[Official About page](https://otb.vc/about/ ) (undated) supports late Seed / Series A, B2B businesses with distinctive IP, post-product traction and increasing revenue, principally European technology ready for international expansion. Published **initial checks are €1m–€7m; lifetime investment up to €25m per company**. These are investment amounts, not fund sizes.
[Fund II close announcement](https://otb.vc/article/otb-ventures-announce-their-new-185m-fund-2/ ) specifies predominantly Series A, up to 10% for Seed, and more than 50% reserved for follow-ons. Historical Series B/C/D transactions do not imply those are the normal initial entry stages.
The [current homepage](https://otb.vc/ ) and [portfolio](https://otb.vc/portfolio/ ) describe **AI & Novel Computing, SpaceTech and Physical AI**, with portfolio text explicitly mentioning dual-use technology. About and the 2024 fund announcement retain the older four-sector language of AI/Automation, FinTech Infrastructure, Cybersecurity and SpaceTech. Record this as an evolution/inconsistency in public wording, not evidence that all older sectors are categorically excluded.
## Verified named deep-tech investments
Round amounts are whole-company financing, **not OTB check sizes**. The examples below are attributable to OTB itself, rather than partners' prior employment.
| Company | Technology rationale, attribution and transaction | Supporting evidence / publication date |
| --- | --- | --- |
| **ICEYE** | Builds and operates synthetic-aperture-radar satellites: aerospace/radar hardware enabling imagery through clouds and darkness. OTB was a returning investor with substantial contribution to **$87m Series C**, led by True Ventures. | [ICEYE-issued PR Newswire release](https://www.prnewswire.com/news-releases/usd-87m-in-series-c-for-iceye-to-continue-conquering-boundaries-in-radar-satellite-imaging-301135389.html ), **22 September 2020**. |
| **SEMRON** | Novel 3D-scaled AI semiconductor architecture; clear computing-hardware deep tech. Official OTB announcement confirms participation with Join Capital, SquareOne and Onsight in **over €7m Seed**. | [OTB investment announcement](https://otb.vc/article/semron-joined-the-otb-portfolio-e7-million-seed-round-for-developing-computer-chips/ ), undated. [Semiconductor Engineering January 2024 funding review](https://semiengineering.com/startup-funding-january-2024/ ) reports **€7.3m**, led by Join, and describes memcapacitor-based in-memory compute. Treat as January 2024 announcement; snapshot's $10.81m figure is not established as this round. |
| **Synthara** | ComputeRAM integrates computing into on-chip memory for embedded AI. OTB participated in financing led by Vsquared. **$5.5m financing plus $5.9m grants**, over $11m combined; the grants are not VC equity. | [Official Synthara release](https://synthara.ai/announcement/synthara-raises-over-usd-11m-to-expand-the-embedded-computing-market-and-enable-ai-applications/ ), **5 June 2024**; [OTB confirmation](https://otb.vc/article/empowering-the-future-of-embedded-chips-synthara-ag-joined-otb-portfolio-2/ ), undated. Round stage not stated in company release. |
| **Safe Intelligence** | Research-derived formal validation of AI models; defensible technical methods beyond routine enterprise SaaS. OTB joined **£4.15m Seed**, led by Amadeus with Vsquared. | [Official company release](https://safeintelligence.ai/safe-intelligence-raises-4m-to-deliver-advanced-validation-for-reliable-ai/ ), **20 February 2025**. Header rounds to £4m; body provides £4.15m. | SHOW MORE
team@apexlogos.ai · 22 days ago
MATCH 
MatrixSpace$20M · 2025-10-15
SettleMint$16M · 2022-10-11
Fractory$9M · 2021-09-06
Segron$3M · 2019-06-27
Lakestar
Tytan$— · 2026-02-24
ClearSpace$— · 2023-01-19
Auriga Space$6M · 2025-07-15
ICEYE$— · 2022-02-03
Kurs Orbital$4M · 2024-03-06
Vsquared Ventures
Safe Intelligence£4M · 2025-02-20
Synthara$5M · 2024-06-05
Waiv$35M · 2026-03-12
Amadeus Capital Partners
Cherry Ventures
Alta Ares€50M · 2026-06-08
CRB Health Tech
Day One Capital
Veridion$6M · 2023-02-21
Hermann Hauser
Inovo.vc
Molten Ventures
Speedinvest
Scalarr$7M · 2021
True Ventures
Vladislav Jez
