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INV Angel

Sam Altman

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OpenAI CEO and prolific angel investor with 400+ portfolio companies; wrote the first check into BRINC Drones (led the $2.25M seed) and returned for their Series A; returning investor in Coco Robotics' 2025 $80M round.

HeadquartersSan Francisco, US

Portfolio3 companies

Cited round volume$243M

Cited rounds5

01

Physical AI portfolio

Round-by-round participation

Coco RoboticsRobot maker · registered · corporate

2025-06-11Series B$80MSource

2021-08-25Series A · Lead$36MSource

HermeusRobot maker · early · defense

2022-03-10Series B · Lead$100MSource

BRINC DronesRobot maker · registered · corporate

2021-10-12Series A$25MSource

2020-10-29Seed · Lead$2MSource

02

Source ledger

5 unique public sources

Coco Robotics Raises $80M to Expand Autonomous Delivery and AI PlatformPR Newswire · retrieved 2026-07-05

Last-mile robotic delivery firm Coco raises $36MTechCrunch · retrieved 2026-07-05

Hypersonic aircraft start-up Hermeus raises $100 million to finish prototype, build out fleetCNBC · retrieved 2026-07-05

BRINC Raises $25 Million Series A Funding Led by Index VenturesBusinessWire · retrieved 2026-07-05

OpenAI's Sam Altman Wrote The First Check Into This $300 Million Startup ($2M Altman + $200K Wang; Oct 29, 2020 date per Crunchbase)Forbes · retrieved 2026-07-05