Viavi Solutions EVP Paul McNab Sells 11,032 Shares for $429,917

Viavi Solutions EVP and Chief Marketing & Strategy Officer Paul McNab sold 11,032 shares at a weighted average $38.97, totaling about $429,917 and representing 30% of his directly held stake. He retains 25,639 shares worth roughly $993,511 at the Sept. 11 close of $38.75; the sale was his third in 2026 and followed a 216% one-year total return. Viavi generated $1.5B in trailing-12-month revenue, up 40% year over year, but reported a $30.4M net loss as it increased investment to address AI-driven network-testing demand.

Analysis

This is not a high-conviction insider signal in isolation: the seller retains a meaningful dollar exposure, and the sale is immaterial to trading liquidity. But a third discretionary sale into a sharply rerated equity raises the bar for VIAV to validate that its AI/network-testing demand is converting into durable gross-margin and operating-margin expansion rather than merely elevated equipment orders. At roughly 6.4x sales on the supplied figures, the stock is not optically cheap for a loss-making test-and-measurement vendor; a deceleration in bookings or weaker mix could drive multiple compression before earnings estimates reset.

The more important competitive read is that AI data-center and high-speed optical deployment benefits the testing ecosystem broadly, not VIAV exclusively. Keysight (KEYS), Anritsu, EXFO/Communications Test and Measurement assets, and optical-component suppliers can capture the same capex cycle; VIAV needs to demonstrate share gains in 800G/1.6T, coherent optics, and cloud-provider workflows to sustain premium valuation. Telecom carrier spending remains a separate risk: if service-provider budgets weaken while hyperscaler demand is strong, headline AI exposure may mask a less favorable revenue mix.

Near term, expect limited fundamental impact beyond potential sentiment-driven weakness after the filing. Over the next 1-3 months, quarterly order trends, backlog conversion, gross margin, and FY guidance are the relevant catalysts; the thesis fails if revenue growth remains elevated but operating losses widen or management attributes demand primarily to one-time customer programs. Over 6-18 months, the structural bull case requires recurring software/service attach and sustained optical test-content growth, not only cyclical lab and production-equipment shipments.

Key Decisions for Investors

• No standalone trade on the Form 4. Treat a 5-10% VIAV pullback as an earnings-watch opportunity only after confirming bookings growth, gross-margin progression, and a narrowing operating loss; absent those data, do not add exposure.
• For existing VIAV longs, reduce tactical overweight into the next results and retain a core only if guidance implies durable growth through the following two quarters. Use a post-earnings revenue-guide cut or further operating-loss expansion as the falsification trigger.
• Express the AI-networking test cycle with a relative-value basket rather than concentrated VIAV exposure: long KEYS against short a diversified telecom-equipment proxy such as IYZ over 3-6 months, conditional on hyperscaler capex remaining firm. This isolates data-center test demand from weaker carrier capex.
• If VIAV rallies materially ahead of earnings without estimate revisions, consider a defined-risk bearish structure such as a 2-3 month put spread rather than an outright short. The risk is upside from a large hyperscaler/optical-production win; size only after checking implied volatility and short interest.