First In

First In is an operator-led early-stage venture fund that backs mission-driven founders building cybersecurity, defense, and data companies—primarily at seed—often founded by technical practitioners from commercial, military, or intelligence sectors. They combine capital, domain expertise, and an operator edge to help scale technologies that secure freedom.

Invests In

Pre-Seed

Seed

Series A

Avg Check sIZE

$1M - $5M

Fund Size

Location

USA

Leads Rounds?

Can Lead or Co-Lead

What they Invest In

Notable Investments

Dapple Security

Press

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Q&A

What's common Advice that Founders receive that is flat out wrong?

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip"

Larsen Jensen

GP, Harpoon Ventures

What's common Advice that Founders receive that is flat out wrong?

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip"

Larsen Jensen

GP, Harpoon Ventures

What's common Advice that Founders receive that is flat out wrong?

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip"

Larsen Jensen

GP, Harpoon Ventures

What's common Advice that Founders receive that is flat out wrong?

"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip"

Larsen Jensen

GP, Harpoon Ventures

First In

Invests In

Pre-Seed

Seed

Series A

aVG. cHECK sIZE

$1M - $5M

lEADS ROUNDS?

Can Lead or Co-Lead

lOCATION

USA

Notable Investments

Dapple Security