Island Technology Inc.
A Dallas-headquartered enterprise security and productivity platform that has expanded from the Enterprise Browser into an “agentic control plane” — $400M Series F at a $6.4B valuation, September 2026
Island is a U.S. company headquartered in Dallas, Texas, with its R&D center in Tel Aviv, Israel. It was co-founded in 2020 by Mike Fey (CEO) and Dan Amiga (CTO), and emerged from stealth in February 2022 with the “Enterprise Browser” category. The founding relationship traces to Symantec’s 2017 acquisition of Fireglass, Amiga’s prior company. In our assessment, the pairing combines proven security operating experience (Fey) with ownership of foundational isolation technology (Amiga).
Former President and COO of Symantec and GM and CTO of McAfee; per Insight Partners, also President and COO of Blue Coat and CTO of Intel Security. Holds a degree in Engineering Physics and Mathematics from Embry-Riddle Aeronautical University and is co-author of “Security Battleground: An Executive Field Manual.” Per the investor-side account, he had planned to leave the industry after departing Symantec in 2018 before Amiga approached him with the concept. Leads headquarters operations in Dallas.
Inventor of remote browser isolation (RBI) technology and founder and CTO of Fireglass, acquired by Symantec in 2017 (reported at approximately $250M). Previously led software security at the Microsoft Technology Center in Tel Aviv and served as Chief Software Architect at Schneider Electric; per Contrary Research, spent five years in Israel’s Unit 8200. Co-founded or seed-invested in several cyber startups staffed by Fireglass alumni, including Axis Security, Cycode and Build.Security (acquired by Elastic in 2021). Leads R&D in Tel Aviv.
Co-founder and former CTO of CrowdStrike; co-founder and Chairman of Silverado Policy Accelerator. Reinvested personally in the Series F. He is an investor rather than an executive, but we view his backing as a credibility signal within the security community.
Founder and General Partner of Cyberstarts, an Israel-linked early-stage cyber specialist that backed Island from inception alongside Sequoia, Insight and Stripes in the initial seed capital base. We assess Cyberstarts as a key link to the Israeli R&D talent network.
- Founding year: 2020 per Business Wire, Contrary Research, Calcalist and most sources, versus 2019 per certain startup databases. We adopt 2020 (stealth entry); the date of legal incorporation is unverified.
- Fey’s pre-Island career: Contrary Research cites a stint as CEO of D2iQ (formerly Mesosphere), whereas Insight Partners and Calcalist describe him as having stepped away from the industry after Symantec. We were unable to reconcile the two accounts.
- Third co-founder: One database (Startup Intros) lists Brian Kenyon as a co-founder, but company materials and major outlets describe a two-founder structure. Unverified.
Island deployed its GA product to select large enterprise customers in September 2021 and formally launched the Enterprise Browser in February 2022. It has since broadened the portfolio to a consumer-browser extension, endpoints, applications, next-generation SASE and data protection (DLP). In its September 2026 Series F release, the company redefined itself as “the agentic control plane for enterprises.” Management asserts that ARR has doubled every fiscal year since launch (self-reported).
We structure Island’s portfolio into three pillars (our classification, based on company materials).
The founding product. Embeds last-mile controls in the browser: copy/paste, download and screenshot restrictions, data redaction and watermarking, and MFA insertion. Adopted for BYOD, contractor onboarding and reduced VDI dependence, with traction concentrated in regulated verticals such as financial services, defense, government and retail.
Extends browser-level controls to endpoints and the network via a consumer-browser extension, endpoint agents and a next-generation SASE architecture built from the endpoint outward, targeting displacement of legacy network security stacks.
Provides identity governance, access, guardrails, data boundaries, human approvals, cost governance and audit trails for both people and AI agents through a single policy engine. In August 2026 the company announced “Enterprise Vibe Publishing” for deploying AI-built applications (per release headline), signaling expansion into AI workloads.
Five-layer control plane (per CTO Amiga): (1) last-mile control, (2) network, (3) data, (4) identity and (5) observability. The company states that combining these layers lets the enterprise determine in real time who or what is acting, what it can reach, what data it can use, what it is doing, and whether the action should be allowed. In our assessment, this architecture could be a differentiating argument versus single-layer solutions as agent governance matures; however, actual agent-workload performance is not verifiable from public materials.
- Absolute ARR undisclosed: The “doubling annually” claim is company self-reported, with no disclosure of base year or methodology. CB Insights lists 2024 revenue only as a $10M–$99M range, too wide to derive a valuation multiple.
- Customer count timing mismatch: The 450-customer figure appears identically in Calcalist (March 2025) and Insight Partners (March 2026) materials, so whether it has been refreshed is unclear. The current customer count is unverified.
- Awards and ratings: Gartner Peer Insights Customers’ Choice reflects individual user opinions and is not a Gartner endorsement (per Gartner’s own disclaimer). The CNBC Disruptor 50 2026 listing (No. 28, per Dallas Innovates) is a qualitative indicator.
Island was valued at $1.3B in March 2022, shortly after exiting stealth, and over roughly four and a half years has lifted its valuation to $6.4B through five priced rounds, one Series B extension and institutional share purchases. Cumulative outside funding exceeds $1B per SecurityWeek; our simple aggregation (approximately $730M as of March 2025, plus the J.P. Morgan participation, plus the $400M Series F) also points to roughly $1.1B or more. The valuation path is characterized by consistent step-ups from round to round.
Per the February 2022 launch release, the company had raised almost $100M from Insight Partners, Sequoia Capital, Cyberstarts and Stripes by stealth exit, and had hired more than 100 employees. Individual seed and Series A amounts and valuations are not available.
Led by Insight Partners with Stripes and Sequoia participating; cumulative funding surpassed $200M. A $60M extension in November of the same year, at the same $1.3B valuation and including strategic investors such as Cisco Investments, brought cumulative funding to approximately $270M.
Cumulative funding exceeded $325M (Calcalist). We were unable to identify the lead investor within the sources reviewed.
Co-led by Sequoia and Coatue (TechCrunch). Valuation roughly doubled versus the prior round.
Existing investors including Sequoia, Insight, Cyberstarts and Georgian participated. Cumulative funding was approximately $730M, and the CEO told Reuters that cash on hand exceeded $530M. The round came 11 months after Series D.
Calcalist reported J.P. Morgan’s additional investment at a $4.8B valuation. CB Insights records a $250M secondary transaction in September 2025, but the structure and participants are undisclosed.
Deal overview: Led by Evolution Equity Partners, a cyber and data-focused growth investor (Richard Seewald, Founder and Managing Partner). Existing investors Prysm Capital, Sequoia, Coatue, Cyberstarts, Insight, J.P. Morgan Growth Equity Partners, Alta Park, Georgian, G Squared and Squarepoint participated, along with Alperovitch personally (per press release). The company describes the valuation as “more than doubling since 2024”; by our calculation, it represents an increase of approximately 33% versus the most recent disclosed valuation ($4.8B, March 2025).
Use of proceeds: Product innovation and expanded customer-facing innovation capacity as enterprises scale AI agents. One outlet (Crypto Briefing) summarized the focus as securing AI agents, but the specific allocation is undisclosed.
Our assessment: The shift to a cyber-specialist lead investor and the broad re-participation of existing investors read as insider-confidence signals. However, the primary/secondary split has not been disclosed, so net capital inflow cannot be confirmed.
• Amount raised: $400,000,000 (Series F)
• Valuation: $6.4B (pre-/post-money not specified)
• Lead: Evolution Equity Partners
• Cumulative funding: exceeds $1B (per SecurityWeek; our simple aggregation approximately $1.1B+)
• Valuation trajectory: $1.3B (2022) → $1.5B (Oct 2023) → ~$3.0B (Apr 2024) → $4.8B (Mar 2025) → $6.4B (Sep 2026)
- Pre-/post-money not distinguished: The release does not state whether $6.4B is post-money. Market convention suggests post-money, but this cannot be confirmed.
- Conflicting Series D valuation: Approximately $3.0B (Calcalist, company-side) versus $2.9B (TechCrunch). Series E likewise varies, at $4.8B versus $4.85B (TechCrunch).
- Primary/secondary split undisclosed: The share of the $400M Series F reaching the company is unknown. The $250M September 2025 secondary listed by CB Insights is attributed to undisclosed investors and cannot be cross-verified.
- Cumulative funding varies by source: $730M (Series E reporting), $750M+ (Calcalist, July 2025), $810M–$860M (startup databases) and $1B+ (SecurityWeek, September 2026), depending on whether secondaries are included.
- Series C lead unidentified: We could not identify the lead investor within the sources reviewed.
We organize Island’s competitive advantages into four themes: (1) first-mover benefits from creating the category, (2) a browser-anchored multi-layer expansion architecture, (3) the capital base and optionality of an independent vendor, and (4) founder pedigree and investor network. Structural risk nonetheless persists in the form of bundling pressure from large platform vendors, which we address separately in the risk/opportunity panel below.
As the vendor that introduced the “Enterprise Browser” category in 2022, Island is grouped with Palo Alto’s Prisma Access Browser (formerly Talon) as one of the two purpose-built leaders in multiple comparison sources. Management claims Fortune 100-scale enterprise and large-bank customers, and Island holds recognition including Frost & Sullivan’s 2026 Global Zero Trust Browser Security Company of the Year. Contract-level detail on customer references is undisclosed.
The architecture starts in the browser and extends through endpoints, SASE, DLP, identity and observability under a single policy engine and audit trail. If the company’s claims hold, customers can govern people and AI agents in one framework, positioning Island to absorb vendor-consolidation demand. However, in the extended layers, particularly network and SASE, Island competes directly with incumbents such as Zscaler, Netskope and Palo Alto, so the pace of penetration remains a matter for future verification.
Rival Talon was acquired by Palo Alto Networks in late 2023 (reported at approximately $625M) and absorbed into its SASE portfolio, whereas Island has kept an independent roadmap. Cumulative funding above $1B and the $400M Series F provide capacity for R&D and go-to-market expansion, and in our assessment strengthen Island’s negotiating position under both M&A (as acquirer or target) and IPO scenarios; specific plans are undisclosed.
Fey’s Symantec and McAfee leadership, combined with Amiga’s foundational RBI technology and Fireglass exit, is a proven pairing across both sales and product in enterprise security. Repeat participation from Sequoia, Insight, Coatue and Cyberstarts, plus Alperovitch’s personal investment, indicates standing within the industry. The strategic investor roster disclosed in March 2025, including Capital One Ventures and Citi Ventures alongside J.P. Morgan’s later participation, is consistent with the company’s core financial-services vertical.
Competitive landscape summary: Purpose-built: Palo Alto Prisma Access Browser (Talon-based, natively integrated with SASE). Platform-bundled: Google Chrome Enterprise (free Core, paid Premium) and Microsoft Edge for Business (bundled with Microsoft licensing). No-migration security layers: LayerX, Seraphic and similar. Isolation and BYOD specialists: Venn, Surf and others. Network-based: Zscaler and Netskope (which offers its own enterprise browser). Third-party comparisons characterize stack compatibility and existing vendor relationships as the key selection variables.
- Bundling pressure: Default inclusion of Chrome and Edge, and Palo Alto’s integrated SASE sales motion, could weigh on new-customer acquisition cost and pricing power.
- Browser-replacement friction: Full-replacement products face migration resistance, and no-migration alternatives exist.
- Valuation verifiability: With absolute ARR undisclosed, the $6.4B valuation relies heavily on the growth-rate narrative.
- Early-stage “agentic control plane” market: Category definition and budget allocation are still forming, and no performance data is available.
- AI agent governance demand: As agent adoption spreads, spending on an integrated identity, access and audit layer could expand.
- Legacy stack displacement: Combined with tool-consolidation demand across VDI, VPN and CASB, there is potential for higher ACV per customer.
- Penetration of regulated industries: Participation by large banks and financial strategic investors is supportive of the sales channel.
- Exit optionality: Substantial cash and independence keep both IPO and strategic M&A scenarios open (no specific plans disclosed).
- Market share and competitor revenue unverified: The comparison materials we reviewed are mostly vendor blogs and review sites, with no independent market-share data. Comparison pages published by competitors such as Palo Alto are classified as interested-party material.
- Talon acquisition price: The approximately $625M figure is cited from secondary media, and we could not cross-check it against a primary disclosure.