Greenoaks
Greenoaks leads AIR Security's second seed round
Summary: AIR Security announced that it came out of stealth on September 1, 2026, and named Greenoaks among the investors backing the company. TechCrunch separately reported that AIR raised $50 million across two seed rounds, with Sequoia leading the first round and Greenoaks leading the second.
Why it matters: The update may matter to due-diligence readers as a public signal of Greenoaks' reported lead role in a private AI-security financing, while the source set should not be used to infer fund exposure, ownership terms, valuation support, security efficacy, customer adoption, performance, or investment merit.
Summary
AIR Security announced on September 1, 2026 that it came out of stealth and described its product as a context firewall for AI agents. The AIR source-party announcement names Greenoaks among the investors backing the company.
TechCrunch separately reported that AIR raised $50 million across two seed rounds, with Sequoia leading the first seed round and Greenoaks leading the second. This draft treats those points as source-attributed financing and product-context facts, not as 9AT validation of AIR’s technology, market claims, customer adoption, security efficacy, valuation, or Greenoaks’ investment merits.
Why it matters
For due-diligence readers, a reported lead-investor role in a private-company financing can be a useful public signal about where a manager is active by sector and stage. In this case, the signal is Greenoaks’ reported involvement in an AI-agent security company at a time when enterprise AI tooling, agent add-ons, and software supply-chain controls are becoming more visible diligence topics.
The signal is bounded. The sources do not establish Greenoaks’ fund-level exposure, ownership terms, valuation support, security efficacy, customer outcomes, operating performance, or investment results for any Greenoaks vehicle.
Source notes
- AIR source-party announcement: https://www.air.security/blog-posts/out-of-stealth
- TechCrunch financing report: https://techcrunch.com/2026/09/01/air-raises-50m-to-help-companies-vet-the-skills-and-add-ons-ai-agents-use/
- Greenoaks official site: https://greenoaks.com/
- Public adviser identity page: https://adviserinfo.sec.gov/firm/summary/165941
- Source posture: tier-one media report plus source-party company announcement, with Greenoaks official and AdviserInfo pages used only for identity context. Attribute the funding amount, round sequencing, lead-investor roles, AIR product framing, customer references, and market-size context to the source set.
- Verifier support: the 2026-09-02 PM source reviewer cleared this item for drafting after body-level checks found support for AIR coming out of stealth, AIR raising $50 million across two seed rounds, Sequoia leading the first seed round, Greenoaks leading the second seed round, and no same-event local post or draft in
src/content. - Rights posture: summarize and link; do not copy substantial TechCrunch text or reuse AIR marketing language as independent 9AT findings.
9AT filing context
Only narrow identity context is useful for this item. Public adviser/profile context reviewed by 9AT maps Greenoaks to CRD 165941 and SEC file 801-88209, with about $18.3 billion in ADV-reported profile scale. That context can help confirm the adviser identity behind the Greenoaks/AIR source set.
No Form 5500 or 13F context is included. Public-equity holdings and employee-benefit-plan filings do not explain a private-company seed financing and should not be used to imply Greenoaks exposure size, ownership terms, valuation support, portfolio quality, product quality, security efficacy, customer adoption, fund performance, or endorsement.
What to watch
Watch for follow-up AIR, Greenoaks, Sequoia, or reputable media disclosures that clarify the financing structure, investor roles, governance, commercial rollout, customer deployments, product-security claims, and whether AIR later reports operating milestones beyond the out-of-stealth announcement.
Future coverage should keep AI-security, agent tooling, customer, market-size, and investor-outcome claims tied to fresh public sources rather than inferring them from this financing report or adviser-profile identity context.