Sandbar | Semiconductors & Hardware | F4

Introducing F4 Champions, a new accelerator for founders at the earliest stage.F4 Champions for early-stage foundersEnrollment closesAugust 2Learn more

Team Portfolio Raise Champions Essays

F4/Sandbar

Company Overview Backed By Recent Activity Similar Companies Startup DNA

Sandbar

Sandbar is an interface company in NYC creating Stream, a self-extension for minds that keep moving—the first private voice wearable & conversational notepad

Semiconductors & Hardware

Sector

Seed

Stage

Consumer hardware

Model

01Company Overview

Sandbar is an interface company in NYC creating Stream, a self-extension for minds that keep moving—the first private voice wearable & conversational notepad.

02Backed By5 investors

UVUpfront Ventures→BBetaworks→KV

Is this your company? Claim your profile

Startup Intelligence by F4F4 Research Engine

Kindred Ventures

→

TVTrue Ventures→

AAdjacent→

03Recent Activity

FROM Kindred Ventures

Co-led Sandbar's $23M Series A for AI note-taking ring and productivity interface.

INVESTMENT·kindredventures.com

MAR 11, 2026

FROM True Ventures

Led Sandbar's $13M seed round for AI-powered voice-driven smart ring (Stream).

INVESTMENT·linkedin.com

NOV 2025

FROM Betaworks

Invested in Sandbar Series A.

INVESTMENT·tracxn.com

NOV 2025

04Similar Companies

SC

Subtle Computing

Semiconductors & Hardware

→

S

Sandhillmarkets

Fintech & Payments

→

S

Sesame

Consumer Apps & Social

→

S

Sandstone

Legal & Regtech

→

SL

Santori Labs

Enterprise Software

→

05Startup DNA

signals

Sectors
Business Model
Technology

Quick Reference

Sector

Semiconductors & Hardware