/Investor DB

Spero Ventures — 2026 Investments

5 investments dated 2026 · listed companies and verified rows first · show all

Fuel Techftek.cominNASDAQ: FTEKApr 2026 · $14.6M

Fuel Tech provides emissions control systems targeting NOx, SO3, ABS, PM2.5, and CO2, with over 2,100 systems installed across 27 countries, and also offers DGI Dissolved Gas Infusion technology for fresh water treatment.

CleantechClimate TechEnergyWarrenville, US

Vincent Arnone(Executive Officer, Director)inEllen Albrecht(Executive Officer)inDennis Zeitler(Director)Thomas Shaw, Jr.(Director)Sharon Jones(Director)Douglas Bailey(Director)

Co-investorsInspired CapitalWireframe Ventures

Sixtyfoursixtyfour.aiin𝕏Jul 2026

SixtyFour provides AI agents that conduct deep research on people and companies by autonomously gathering and cross-referencing data from multiple sources including official records and the web.

AI & Machine LearningData & InfrastructureEnterprise SoftwareSan Francisco, US

Saarth Shah(CEO)inChristopher Price(COO)inHashim Khawaja(Founding Engineer)Trevor Tuttle(MTS)inHenry Wang(Founding Engineer)Vagmin Viswanathan(AI Engineering)

Co-investorsFoundation CapitalY Combinator468 CapitalAirAngelsHomebrewLightspeed Venture Partners+3 more

Sora Fuelsorafuel.cominApr 2026 · $15M

Sora Fuel produces sustainable aviation fuel (SAF) and diesel using a proprietary closed-loop direct air capture and conversion process that draws carbon from air rather than biomass or industrial feedstocks.

CleantechClimate TechEnergyCambridge, US

Curtis Berlinguette(Founder)inGareth Ross(Founder)inCurtis Belinguete(Director)

BoardPatrick Sarver(Founder)inMarc Tarpenning(Director)inMichael Kearney(Director)in

Co-investorsInnovation UBCInspired CapitalLeitmotifMana VenturesThe Engine VenturesWireframe Ventures

Sora Schoolssoraschools.comin𝕏Apr 2026 · $14.6M

Sora Schools provides an engaging, personalized learning experience built by educators, designers, and engineers.

EdTechAtlanta, US

Indra Sofian(Director)inWesley Samples(Executive Officer, Director)Garrett Smiley(Founder)in

BoardTed Dintersmith(Director)Rebecca Kaden(Director)inMichael Lynton(Director)

Co-investorsContraryGaingelsHoneystone VenturesInspired CapitalUnion Square Ventures (USV)CRV (Charles River Ventures)+6 more

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

Olden Labs PBC

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.