Alex Seibel
InvestorPartner at Positive Ventures
Sao Paulo, Brazil
Writes $500K – $1.5M checks · typically $1M
Find your path to Alex
326 people in our graph share verified history with Alex — schools, employers, funds. One of them is your warm intro.
Matan RoetunlockedAlex: together at Harvard Business School (2024–2025)
×10Alex: together at Harvard Business School
Alex: together at The Body Shop
About
Alex Seibel is CEO of HS Investimentos, a family office that manages assets including Dexco, a major building materials producer, and Leo Madeiras, Brazil's largest retail company for furniture components. His career includes founding Positiv.a, a B Corp focused on sustainable circular home and personal care products, and co-founding Apolo Energy, which operates as a leading distributed solar generation company in Brazil. Seibel is also a partner at Positive Ventures, a venture capital firm investing in entrepreneurs with social and environmental impact objectives.
Experience
- HS InvestimentosCEOcurrent2022 — presentSão Paulo, Brasil
- HS InvestimentosSócio-Diretor2020 — 2022São Paulo, Brasil
- Apolo EnergiaCo foundercurrent2017 — presentSão Paulo Area, Brazil
- DexcoBoard Membercurrent2021 — presentBrazil
- Leo MadeirasBoard Membercurrent2020 — presentBrazil
- Mude Wellness MediaSócio e Membro do conselhocurrent2022 — presentSão Paulo, Brasil
- Positiv.aCo-Foundercurrent2014 — presentSão Paulo Area, Brazil
- Positive VenturesPartnercurrent2017 — presentSão Paulo, Brasil
- Centro de Liderança PúblicaMembro do conselhocurrent2024 — present
- Instituto de Cidadania Empresarial (ICE)Membercurrent2019 — present
- Agrivalle BrasilMembro do conselho administrativo2020 — 2025Salto, São Paulo, Brasil
- ARCAHCo fundador e Presidente do Conselho2013 — 2021São Paulo, São Paulo
- Sistema BBoard Member2018 — 2020São Paulo Area, Brazil
- Instituto AkatuBoard Advisor2019São Paulo
- DuratexMembro do comite de sustentabilidade2017 — 2018São Paulo, SP, Brasil
- The Body ShopDiretor executivo2012 — 2014Porto Alegre Area, Brazil
- Leo Madeirassustainability projects manager2006 — 2007São Paulo Area, Brazil
Skills & more
Supply Chain Management2Marketing Strategy14Business Strategy22Market Analysis8Market Research2Management Consulting2Forecasting1Product Development1Sales Management5Marketing Management5Business Planning8Digital Marketing1
+4 more
Strategic PlanningNegotiationManagementEnglishLanguages English · French · Spanish
From Alex's professional profile.
Colleagues at Positive Ventures
Andrea Kestenbaum
Managing Partner and CEO at Positive Ventures
Bruna Constantino
Partner and Community at Positive Ventures
Fábio Kestenbaum
Managing Partner and Investments at Positive Ventures
Gustavo Behring
Managing Partner and Investments at Positive Ventures
Lars
Investor at Damgaard Company
Leila Orenstein
Partner at Gera Capital
Małgorzata Szcześniak
Manager of Operations at Radix Ventures
Marina Ferraz
Investments at Positive Ventures
Network4
Andrea Kestenbaum
Managing Partner and CEO at Positive Ventures
Bruna Constantino
Partner and Community at Positive Ventures
Fábio Kestenbaum
Managing Partner and Investments at Positive Ventures
Gustavo Behring
Managing Partner and Investments at Positive Ventures
Investors connected to Alex in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Alex Seibel?
- Alex Seibel is CEO of HS Investimentos, a family office that manages assets including Dexco, a major building materials producer, and Leo Madeiras, Brazil's largest retail company for furniture components. His career includes founding Positiv.a, a B Corp focused on sustainable circular home and personal care products, and co-founding Apolo Energy, which operates as a leading distributed solar generation company in Brazil. Seibel is also a partner at Positive Ventures, a venture capital firm investing in entrepreneurs with social and environmental impact objectives.
- Where does Alex Seibel work?
- Alex Seibel is Partner at Positive Ventures.
- What check size does Alex Seibel write?
- Alex Seibel typically writes checks of $500K – $1.5M.
- Where did Alex Seibel go to school?
- Alex Seibel studied at Harvard Business School (Opm, Administração e Negócios); The London School of Economics and Political Science (LSE) (Anthropology); Universidade Presbiteriana Mackenzie (Bachelor of Business Administration (B.B.A.)).
Same school
Also attended Harvard Business School2,000
Brad GerstnerFounder & CEO of Altimeter CapitalAileen LeeFounder & Managing Partner of Cowboy VenturesJim BreyerFounder & CEO of Breyer CapitalTim DraperFounder of Draper AssociatesMike Maples JrCo-founding Partner at FloodgateMamoon HamidPartner at Kleiner Perkins
+ 1,994 more
Also attended The London School of Economics and Political Science (LSE)1,494
Lee FixelFounder of AdditionPat GradyPartner at Sequoia CapitalNeil MehtaCo-founder & Managing Partner at GreenoaksCyriac ParisotInvestor at Index VenturesSofia DolfeInvestor at Index VenturesJonas VetterleInvestor at Moonfire Ventures
+ 1,488 more
Also attended Universidade Presbiteriana Mackenzie25
Marcelo LombardoInvestor at Norte VenturesIsabella PiassiInvestor Success at Astella InvestimentosCamila PotenzaManaging Partner at Mindset VenturePaola FerriFinance at Mindset VenturePriscila AntunesDirector at Advent InternationalPedro SorrentinoManaging Partner at Atman
+ 19 more
Also attended Graded - The American School of São Paulo8
Felipe FagundesInvestor at Riverwood CapitalMatheus AbizaidVisiting Investment Analyst at 415 CapitalAlex RamosAssociate at CVS Health VenturesChristian TellesManaging Partner at Expanding CapitalGastón EgurenInvestor at Proeza VenturesPedro MendonçaPartner at 1616 Ventures
+ 2 more
