Y Combinator (YC)

Activity from announced rounds

Activity in this selectionDefense tech

Y Combinator funds early-stage startups through a three-month accelerator in San Francisco, with four batches a year and a standard $500,000 investment for accepted companies.

The investment consists of $125,000 for 7% of the company and $375,000 on an uncapped SAFE with a most-favoured-nation provision. The second SAFE adds to YC’s ownership when it converts, so the full $500,000 is not exchanged for a fixed 7% stake.

During the batch, founders work with YC partners in individual and group office hours, build toward Demo Day and use the alumni community for feedback, hiring and introductions. Companies can apply before launch; YC also accepts businesses that already have users and revenue.

Sources
Rounds participated in
5
Confirmed lead rounds
0
4 roles undisclosed
New companies
4
First participation on record · 1 follow-on
Funding in participating rounds
$132M
4 disclosed · full round size, not this investor’s share

By stage

Series A2
Undisclosed2
Seed1

By primary sector

Defense tech3
Space tech2

By country

United States5

Rounds

5 in this selection
Hop Aero

Develops autonomous hypersonic cargo rockets for military micro-payload delivery.

$11MSeed
Participant
Array Labs

Building a new way to understand the physical world

$21MStrategic
Role not disclosed
Singularity

Building a safer world by deploying low-cost air defense systems at scale

$80MSeries A
Role not disclosed
Array Labs

Building a new way to understand the physical world

$20MSeries A
Role not disclosed