Mara
Mara develops Spike, an autonomous counter-drone system designed to detect, track and stop hostile FPV drones.
$7MPre-Seed
ParticipantAH
Andreessen Horowitz (a16z)
Activity from announced rounds
Activity in this selectionAug 31, 2026 · Aug 1, 2026
Andreessen Horowitz invests in technology companies from seed through growth, with specialist teams in AI, enterprise software, infrastructure, fintech, crypto, healthcare and consumer technology.
The firm pairs investors with an operating platform spanning recruiting, marketing, legal matters and public policy. This structure gives a founder access to specialists for building a management team, reaching customers and navigating regulated markets alongside the investment relationship.
Its American Dynamism practice extends the mandate into areas such as defence and industrial technology. Founders should identify the relevant investing practice: a16z operates across several markets with different technical and commercial requirements.
Sources
- Rounds participated in
- 11
- Confirmed lead rounds
- 1 4 roles undisclosed
- New companies
- 9 First participation on record · 2 follow-on
- Funding in participating rounds
- $5B 11 disclosed · full round size, not this investor’s share
By stage
By primary sector
2 more
Hardware1
Industrial tech1
By country
Rounds
11 in this selectionCastelion
Builds low-cost, mass-producible hypersonic strike missiles for defense
$1BSeries C
Role not disclosedRillet
Rillet provides accounting software in which finance teams and AI agents work from a shared general ledger.
$100MSeries C
ParticipantEtched
Designs AI inference hardware systems combining specialized chips, racks and software.
$700MSeries D
ParticipantYuno
Yuno connects enterprise merchants, banks and wallets to payment providers, local payment methods and fraud tools through a single API.
$45MSeries B
ParticipantHadrian
Builds highly automated factories producing defense and aerospace systems
$1.4BSeries D
ParticipantVolta
Volta develops and operates AI compute infrastructure, combining data-center sites, dedicated compute, software and operations for AI labs, AI-native companies and enterprises.
$300MSeries A
LeadConvex
Convex provides a reactive backend with database, functions, workflow, and storage.
$57MSeries B
Role not disclosedHappyRobot
Deploys AI agents automating enterprise operations across voice, email and documents
$150MSeries C
Role not disclosedMariana Minerals
Builds and operates AI-driven mines and refineries for critical minerals
$310MSeries B
Role not disclosedBase Power
Base Power builds and operates home batteries that supply backup electricity and help balance the power grid.
$1BSeries D
Participant