Fletch
Acquired2 known investors
Fletch is a cybersecurity platform that uses natural language processing and agentic AI to turn external threat intelligence and internal logs into prioritized, real-time insights for security teams. It correlates alerts across data sources to help teams reduce alert fatigue, identify critical threats, and recommend remediation actions.
Also known as Fletch.ai
Founders & leadership
Investors Β· 2
Company profile
researched Aug 2026Fletch was a San Francisco-based cybersecurity company that applied natural language processing and agentic AI to the problem of alert overload in security operations. Its platform ingested external threat intelligence together with internal logs, correlated signals across those data sources, and produced real-time, prioritized insights and human-readable tasks for security and IT teams. The company positioned the product as an early warning system that surfaced the threats most relevant to a given organization's technology footprint, in some descriptions 7-10 days ahead of mainstream news coverage, and paired those alerts with plain-language guidance on prevention, remediation, and internal communication.
According to founder and CEO Grant Wernick, Fletch automated the data plumbing that conventional analytics tooling requires, compressing work that typically took around six months into a few days so that security intelligence was available from day one of deployment. The stated aim was to make security data approachable for both technical and non-technical staff, including analysts, operators, and leadership. In June 2025 F5 acquired Fletch and began integrating its agentic AI capabilities into the F5 Application Delivery and Security Platform (ADSP), with F5 citing enhanced security analytics, reduced alert fatigue, and proactive remediation recommendations as expected customer benefits.
Founding story
Grant Wernick founded Fletch with Jacob Perkins, his collaborator on two earlier ventures. In 2010 Wernick started Weotta, a natural language local search product, with childhood friend Jacob Perkins; in 2015 the pair founded Insight Engines, which built a natural language search interface on top of Splunk for security teams and was backed by August Capital, Google Ventures, DCVC, and Splunk. Wernick has described Fletch as growing out of what he observed while running Insight Engines: security teams spending their time on data plumbing and system maintenance rather than security work, and getting limited value from expensive tooling. Reporting places Fletch's founding in 2020, while Wernick's own account describes the company as launched in 2021. Perkins departed the company in 2023.
Business model
Fletch sold a security intelligence software platform to enterprise IT and security organizations, delivering prioritized threat insights and recommended actions rather than raw alerts. Following the F5 acquisition, its technology is delivered as part of the F5 Application Delivery and Security Platform.
Traction
The company had 15 employees at the time of its acquisition, 13 of whom joined F5.
Latest developments
F5 announced the acquisition of Fletch on June 2, 2025, with terms undisclosed. Fletch's agentic AI capabilities are being fully integrated into the F5 Application Delivery and Security Platform, and Grant Wernick joined F5. Fenwick, outside counsel to Fletch since 2017, represented the company on the sell side.
βΈFull profile β market position, technology, go-to-market, geography, history
Market position
Fletch described itself as one of the first cyberthreat AI platforms and was categorized in industry directories under exposure management. Its differentiating claim was prioritization and early warning rather than additional alert volume.
Fletch emphasized reducing alert fatigue by correlating and prioritizing signals instead of adding detection volume, producing human-readable tasks and remediation recommendations, and automating data modeling so that useful security intelligence was available within days rather than after a months-long integration effort.
Technology
The platform combined natural language processing with agentic AI and analytics. Its AI read and interpreted published threat research daily and matched identified threats to a company's exposure and technology footprint. Agentic components correlated internal and external data, prioritized the most critical threats β in some cases before an Indicator of Compromise was identified β supplied real-time context, and assigned follow-on tasks such as blocking an IP address associated with a ransomware group or closing a ticket judged likely benign based on prior similar behavior. Automated data modeling and ingestion reduced setup time compared with traditional analytics tools.
Go-to-market
Enterprise IT and security teams, including security operations centers, security analysts, and CISOs. Wernick's earlier company Insight Engines sold to Fortune 100 companies and large healthcare and government organizations.
Geography
Headquartered in San Francisco, California, United States. Acquirer F5 is based in Seattle.
History
Founded in 2020 (with the product publicly launched in 2021 per the founder's account) by Grant Wernick and Jacob Perkins, following their earlier companies Weotta (2010) and Insight Engines (2015). Fletch raised a $12.5 million Series A led by True Ventures, reported in 2025 as having closed two years earlier. Co-founder Jacob Perkins left in 2023. F5 acquired the company in June 2025.
Compiled by commissioned research from 7 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Competitors Β· 3
by search overlapCompanies competing with Fletch for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline Β· 4
launches, deals, and filingsF5 announced the acquisition of Fletch, with Fletch's agentic AI capabilities to be fully integrated into the F5 Application Delivery and Security Platform (ADSP). Terms were not disclosed. Fenwick represented Fletch on the sell side.
Following the acquisition, Fletch founder and CEO Grant Wernick joined F5 to scale the technology within the F5 ADSP.
Fletch raised a $12.5 million Series A round led by True Ventures, reported in June 2025 as having been raised two years earlier.
$12.5M source β
Jacob Perkins, who co-founded Fletch with Grant Wernick, departed the company in 2023.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
βΈResearch sources Β· 7
primary sources listed
- Fletchfletch.ai Β· web
7 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Fletch do?
- Fletch built an AI cybersecurity platform that turned threat intel and logs into prioritized insights; acquired by F5 in 2025.
- Who founded Fletch?
- Fletch was founded by Grant Wernick.
- Who are Fletch's investors?
- Fletch's investors include Alpha Edison, August Capital.