Investor profile
Ivar Siimar
Angel, Operator angel & Key Coach at Tehnopol, Business Mentor at Prototron fund, Co-Founder at Trind Ventures, Founder & Member at Estonian Business Angels Network (EstBAN)
Ivar Siimar is an angel investor and operator angel based in Estonia with one known investment, Planet OS.
Is Ivar Siimar a fit for your startup?
Paste your website. AI checks the fit and scores every other investor too.
Investment focus
Contacts
Ivar Siimar portfolio company (1)
- Planet OS
Affiliated funds' portfolios
Key Coach at Tehnopol, whose known portfolio counts 2 companies
- Raiku
- ÄIO
Business Mentor at Prototron fund, whose known portfolio counts 10 companies
- Raiku
- UP Catalyst
- Jälle Technologies
- Parcelsea
- 10Lines
- Captain Corrosion
- Neurosalience
- Solaride
- Vetik
- Wastefox
Co-Founder at Trind Ventures, whose known portfolio counts 10 companies
- Fractory
- Bahn Express
- Groover
- Webel
- InGain
- Jobilla
- Wudpecker
- Scorestars
- SparkReceipt
- Your.Rentals
Founder & Member at Estonian Business Angels Network (EstBAN), whose known portfolio counts 9 companies
- Raiku
- DriveX Technologies
- FleetFox
- Esgrid
- BrachyDOSE
- Cuploop
- Paul-Tech
- SafePAS
- MarkeDroid
Investor Profile
Founders in the listed sectors AI, Climate, Education and Healthcare, and focus areas Big Data, Biotech, Clean Energy and Data Analytics will recognize the pattern in this portfolio.
Ivar Siimar is listed for Seed and Series A rounds in the database.
The portfolio and focus above give founders context on whether Ivar Siimar matches their raise.
Colleagues
Dmitri Laush
Member
London, United Kingdom
Reima Linnanvirta
Partner
Helsinki, Finland
Priit Uustulnd
Investor
Tallinn, Estonia
Juha Ruohonen
Member
Espoo, Finland
Indrek Prants
Member
Tallinn, Estonia
Sven Sabas
Member
London, United Kingdom
Olga Lustsik
Product strategist
Tallinn, Estonia
Musa Suleymanov
Investor
Tallinn, Estonia
Sixten Sepp
Investor & member
Tartu, Estonia
Ivo Remmelg
Mentor
Tallinn, Estonia
Joel Aasmae
Partner
Estonia
Taavi Lepmets
Partner
Tallinn, Estonia
Yrjö Ojasaar
Investment Board Member
Tallinn, Estonia
Peeter Kompus
Principal
Estonia
Kimmo Irpola
Partner
Helsinki, Finland
Iryna Krepchuk
Investment Manager
Tallinn, Estonia
Dmitry Sumin
Member
Tallinn, Estonia
Raigo Õunapuu
Investor
Tallinn, Estonia
Harri Tallinn
Angel Investor
Tallinn, Estonia
Pavel Ruban
Angel Investor
Estonia
Similar investors
Showing 20 of 100
Ekaterina Almasque
angel investor
London, United Kingdom
Martin Tajur
Investor
Estonia
Andris K. Berzins
Partner
Latvia
Vinoth J.
angel investor and operator angel
London, United Kingdom
Tristan Pollock
Founding Partner
San Francisco, United States
Lindel Eakman
Partner
Longmont, United States
Martin Henk
angel investor and operator angel
Estonia
Chris Gasteratos
angel investor
Athens, Greece
Vineet K.
angel investor and syndicate member
Ann Arbor, United States
Leon Podobedov
Founder
Kyiv, Ukraine
Dries Bauters
angel investor
St-Truiden, Belgium
Trond Riiber Knudsen
Founder
Norway
Torben Schreiter
Partner
Leipzig, Germany
Zygmunt Grajkowski
angel investor and operator angel
Otwocki, Poland
Victoria Treyger
Sr. Venture Partner
San Francisco, United States
Jonathon Triest
Managing Partner
Detroit, United States
Travis Kerivan
angel investor
Reno, United States
Iiro Auvinen
angel investor
Helsinki, Finland
Michael Burnett
Managing Partner
London, United Kingdom
Krim Talia
Founder, Owner
Stockholm, Sweden
Frequently asked questions
Who is Ivar Siimar?
Ivar Siimar is an angel investor and operator angel based in Estonia with one known investment on file, Planet OS. The sections above list the sectors, stages and firms attached to that record.
What does Ivar Siimar invest in?
Listed sectors include AI, Climate, Education and Healthcare; listed focus areas include Big Data, Biotech, Clean Energy and Data Analytics. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Ivar Siimar invest at?
The database lists Ivar Siimar for Seed and Series A rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Ivar Siimar listed at?
Ivar Siimar is listed as Business Mentor at Prototron fund. 20 other people in the database share a firm with Ivar Siimar.
How do I contact Ivar Siimar?
An email address, a phone number and a LinkedIn page are on file for Ivar Siimar. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
Skip the browsing. Let AI find your ideal investors in one minute.
Paste your startup website and AI picks your best-fit investors out of 135,000+ profiles.
Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal