How much did Arcjet raise in its Series A?

Arcjet raised $8.5M in a Series A announced on 8 October 2025.

Who invested in Arcjet's Series A?

The round was led by Plural Platform, Andreessen Horowitz, Feross Aboukhadijeh, Jeff Lawson, Micah Smurthwaite, Ott Kaukver, Seedcamp.

Arcjet is a cybersecurity company specializing in Application Security, founded in 2023 and headquartered in San Francisco, United States.

Funding record · 2025 / 10

Arcjet raises $8.5M Series A for application security

Announced 8 October 2025 · Recorded 8 September 2026 · Last verified 8 September 2026

Arcjet, an application security company based in San Francisco, United States, raised $8.5M in a Series A announced on 8 October 2025, led by Plural Platform, Andreessen Horowitz and Feross Aboukhadijeh with 4 others. Its disclosed equity funding is now $12.1M across 2 rounds.

Amount: $8.5M
Round: Series A
Announced: 8 October 2025
Lead investors: Plural Platform, Andreessen Horowitz, Feross Aboukhadijeh, Jeff Lawson, Micah Smurthwaite, Ott Kaukver, Seedcamp
Sources on record: 1fintech.global

From the source

Arcjet raises $8.3M Series A to expand AI-powered in-code security platform

Arcjet secured $8.3M in Series A funding co-led by Plural to expand its AI-powered in-code security platform and launch a local AI security model for fighting AI-driven cyberattacks.

fintech.global · 10 October 2025 ↗

The Mandos read

What the record says about Arcjet

Momentum 30 / 100 · Coolinglocked →
pillars in the platform
16 employees · down 11% last monthlocked →
history and breakdowns in the platform
Exit Readiness: Lowlocked →
Tested against 751 past exits in the Mandos record: 43% sat in Watch or Elevated 2 years before. Companies in Elevated exited at 3.1× the record's rate.
Buyers most often compare Arcjet with Akamai, APIsec and C/sidelocked →
the full set in the platform

Funding history

Arcjet funding on record

Arcjet has raised $12.1M in priced equity. Its most recent round was a Series A in October 2025.

Latest round on record: Series A, Oct 2025.

Arcjet funding on the profile →

In the platform

The round is the fact. The read is the product.

Every round, investor and correction for Arcjet, the competitors buyers weigh it against, hiring by department, and an alert when the next thing happens.

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FAQ

Questions people ask

How much did Arcjet raise in its Series A?: Arcjet raised $8.5M in a Series A announced on 8 October 2025.
Who invested in Arcjet's Series A?: The round was led by Plural Platform, Andreessen Horowitz, Feross Aboukhadijeh, Jeff Lawson, Micah Smurthwaite, Ott Kaukver, Seedcamp.
What does Arcjet do?: Arcjet is a cybersecurity company specializing in Application Security, founded in 2023 and headquartered in San Francisco, United States.