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Surtr Defense Systems

Surtr Defense Systems is a developer of AI-powered software layer that combine different drone technologies into one command system.

Robotics and hardwareDefense and securityDeveloper tools and cloudY Combinator
Latest funding

$5M Seed ·

Source: fundraisingfox.com

Total raised: $5.5M* across 2 sourced rounds

All 3 rounds ↓
Website: surtrdefense.com.
X: @surtrdefense · 138 followers.
LinkedIn: surtr-defense-systems.
Categories: Robotics and hardware Defense and security Developer tools and cloud.
Sectors: Industrials, Defense.
Stage: Seed.
Based in: San Francisco, United States.
Total raised: $5.5M* in 2 sourced rounds.
Last round: Jul 7, 2026 · 128 days ago.
Team: 2 people on the team page.
On Recent Funding since: Sep 28, 2026.

Signals

X account@surtrdefense · created Apr 28, 2026 (7 months old) · 138 followers
Website registeredFeb 28, 2026 (8 months old)
TIMELINE · MONEY RAISED

Surtr Defense Systems | 74 days from website to first raise on record

@surtrdefense·Raised $5.0M in 1 sourced round·2 signals before the first raise
$1.3M$2.5M$3.8M$5.0MMARMAYJULSEPNOV$5.0M||WEBSITE CREATED · FEB 28, 2026||X ACCOUNT CREATED @SURTRDEFENSE · APR 28, 2026Pre Seed · May 13, 2026PRE-SEED · MAY '26$5M Seed · Jul 7, 2026$5M SEED · JUL '26

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

Funding rounds

  1. Seed · $5M
    Source: fundraisingfox.com
  2. Pre Seed · amount undisclosed
  3. X account created
  4. Website created
  5. Date unknown
    Round · $500K*
    YY Combinator
    Source: ycombinator.com

Founders and team

Investors

Companies like Surtr Defense Systems

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/surtr-defense-systems (get a free API key).

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