Cato Networks, which makes software-defined wide-area networking tools, raises $55M led by Lightspeed Venture Partners
Mike Wheatley / SiliconANGLE :
Context & Ripple Effects
This $55M round is the opening move in what became one of Lightspeed Venture Partners' most persistent company bets. The firm led again in Cato's $77M follow-on during the remote-work surge, then anchored the $200M round at a $2.5B valuation, and kept leading through the $238M raise at a $3B+ valuation and beyond — making this 2019 round the entry point of a multi-year, single-investor accumulation strategy.
At the time, Cato was positioning software-defined wide-area networking as a cloud-delivered service protecting remote workforces — the framing that would later harden into the SASE category its rival Versa Networks also targeted with an $84M Series D two years later.
First-order effects
- Cato gains $55M to scale its cloud-delivered SD-WAN service ahead of the remote-work demand wave that hit in 2020, with Lightspeed taking the lead position it would hold through every subsequent round.
- Lightspeed deepens its concentration in software-defined networking, a thesis it extended months later by leading Arrcus's $30M Series B.
Second-order effects
- Versa Networks' push to unify network and security tooling into a single console forces Cato to keep raising aggressively to fund that same convergence, escalating the funding arms race between the two SASE rivals.
- Lightspeed's repeated leadership of both Cato and Arrcus signals limited partners that the firm is underwriting SDN as a platform shift rather than a set of point products, shaping where follow-on capital flows.
Third-order effects
- If the pattern holds, enterprise networking consolidates around converged network-plus-security platforms funded by a small set of repeat lead investors — Cato's trajectory from this $55M round to billion-dollar cumulative funding shows the structure already forming.
- Sustained investor concentration around one category leader pressures smaller SD-WAN vendors toward acquisition or niche specialization rather than independent scale.
The trend: Enterprise networking is converging into cloud-delivered security platforms (SASE), with concentrated venture capital — Lightspeed above all — serially compounding its stake in the category leader across successive mega-rounds.