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Companies

Crosstown Fiber

Underground dark fiber networks for lease

Raised to date

$77.2M

across 1 Form D filing

Investors
3
Last filed
Mar 5, 2026

About

Crosstown Fiber is a telecommunications startup that develops, owns, and operates custom, 100% underground dark fiber networks. Based in the Chicago area, the company provides secure, scalable, and resilient connectivity by designing and leasing high-capacity fiber routes, allowing customers to avoid the costs and complexities of network construction. Their infrastructure is positioned as the first comprehensive city-wide build in Chicago since the late 1990s, offering critical path diversity in the Midwest.

The company's primary-value proposition is its commitment to 100% underground network routes, which provide enhanced security and protection from physical disruptions. As an owner-operator with deep local expertise, Crosstown Fiber offers tailored, scalable solutions without requiring capital expenditure from its customers.

Funding

  • EquityFiled Mar 5, 2026Form D/A
    $77.2M/ no target

Product

Custom Underground Dark Fiber Networks

Dark Fiber Infrastructure

Crosstown Fiber's core offering is the design, construction, and leasing of custom-built dark fiber networks that are entirely sub-surface. The networks feature redundant ring structures to ensure reliability and offer direct interconnections between data centers and other key locations. The initial Chicagoland network spans 350-400 route miles and connects over 35 commercial buildings.

  • 100% sub-surface deployment for protection from weather and physical disruptions
  • High-capacity, low-latency infrastructure suitable for AI, cloud, and emerging technologies
  • Redundant ring architecture for path diversity and high availability

Built for

Enterprises, hyperscalers, data center operators, and government agencies.

People on file