BL

Black Flag — Pre-Seed & Seed VC Firm ($100K–$2.0M Checks)

VC

Black Flag is a Pre-Seed, Seed venture capital firm investing in Deep Tech, AI / ML, Climate / Energy. The firm typically writes $100K–$2.0M checks and has 27 portfolio companies in our records.

Check size
$100K–$2.0M
Portfolio
27 companies on record
Partners
2 listed
Stage
Pre-Seed, Seed
Sectors
Deep Tech, AI / ML, Climate / Energy
AUM
Not in our records
How to approach: warm intro preferred
Stage

Pre-Seed, Seed

Check Size

$100K – $2.0M

Portfolio

27+ companies

Team

2 partners

Investment Thesis

Hands-on early-stage investor backing founders in aerospace, biology, energy, robotics, and adjacent deep-tech areas. Known for flexible early checks and operator support.

How Black Flag invests

Black Flag is a vc firm. The firm invests at the Pre-Seed, Seed stages, with a focus on Deep Tech, AI / ML, Climate / Energy.

Black Flag typically writes checks of $100K–$2.0M per investment.

Black Flag has backed 27 companies in our records, including Firestorm Labs, Scout AI, Albedo.

Partners & Team

LJ

Larsen Jensen

General Partner

JT

Jeff Torrance

Managing Partner

Industry Focus

Invests In

Deep Tech
AI / ML
Climate / Energy

Portfolio Companies (27)

Other

FI

Firestorm Labs

Defense / aerospace·Not stated

Developer of rapidly deployable, mission-adaptable unmanned aerial systems for defense applications.

SC

Scout AI

AI·Not stated

AI company listed by Black Flag in its portfolio.

AL

Albedo

Space tech·Not stated

Space company focused on Very Low Earth Orbit operations and satellite-based insights.

SE

Second Front

Not stated·Not stated

Listed by Black Flag as a portfolio company.

SO

Solugen

Climate / industrial biotech·Not stated

Biomanufacturing company that uses biology and chemistry to make sustainable chemicals.

AA

Aalo Atomics

Clean energy / nuclear·Not stated

Nuclear engineering company building mass-manufactured nuclear plants.

AN

Antora Energy

Energy·Not stated

Energy company listed by Black Flag as a portfolio company.

BI

BillionToOne

Biotech / diagnostics·Not stated

Molecular diagnostics company listed by Black Flag as a portfolio company.

LI

Lightmatter

Semiconductors / computing·Not stated

Photonics computing company listed by Black Flag as a portfolio company.

ZI

Zipline

Robotics / logistics·Not stated

Autonomous delivery robotics company.

How to pitch Black Flag
  • •Raising at Pre-Seed, Seed? You're squarely in their sweet spot.
  • •Lead with your fit in Deep Tech, AI / ML, Climate / Energy — the sectors they actively back.
  • •Size your ask to their typical $100K – $2.0M check.
  • •warm intro preferred
  • •Address your outreach to a specific partner, such as Larsen Jensen, General Partner.
  • •A warm introduction beats a cold email. Get matched and request an intro.

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