ONE LEVEL DEEPER
ZS
Warren Buffett frameworkThe Owner-OperatorBenjamin Graham frameworkThe Value ArchitectMichael Mauboussin frameworkThe Expectations EngineerHoward Marks frameworkThe Cycle WhispererPeter Lynch frameworkThe Everyday Edge

26% revenue growth meets 12 quarters of insider selling - when fast growers lose insider confidence.

cautiousBullishconviction

Applying this lens, a fast grower with exceptional fundamentals trades at a PEG of 1.09 while insiders head for the exits.

THE LENSES
THE CLASSIFICATIONexceptional

Can I explain why this company grows, and is the price fair for the growth I'm getting?

Revenue grew 26% YoY in Q1'26, accelerating from prior quarters
R&D intensity increased from 85% to 112% of operating cash flow
Operating at $2.67 billion revenue scale with single reportable segment
Geographic expansion with 51% international revenue across EMEA and Asia Pacific

This framework sees a textbook fast grower - revenue exceeding the 20% threshold with accelerating investment in product development. The single-segment focus and geographic expansion support continued growth momentum.

Revenue
THE GROWTH STORYcompelling

If you can't explain to an eleven-year-old in two minutes why you own a stock, you shouldn't own it.

Zero Trust Exchange platform - cybersecurity without traditional network perimeters
100% concentration in single reportable segment generating $2.67 billion
Revenue shows 0.98 correlation with inflation indicating pricing power
Counter-cyclical demand pattern with -0.834 correlation to consumer sentiment

The growth story is crystal clear: "They protect companies by eliminating network security boundaries." The Zero Trust model represents a fundamental shift in cybersecurity, and Zscaler owns the category with pricing power that tracks inflation perfectly.

Revenue by Segment
THE PEG RATIOreasonable

The P/E ratio of any company that's fairly priced will equal its growth rate.

Revenue growing 26% YoY with P/E of -232.7 due to negative earnings
EV/Sales at 39.96x against 26% revenue growth implies PEG equivalent of 1.09
Market implies 4.41% perpetual growth vs 23.9% trailing growth rate
Free cash flow positive with 20.7% FCF margin despite negative earnings

With negative earnings, traditional PEG doesn't apply, but using EV/Sales as a proxy suggests fair pricing at 1.09x growth rate. The framework would note strong cash generation offsetting the lack of GAAP profits, though sustainability remains the key question.

EV / EBITDA
WHAT THE INSIDERS KNOWconcerning

Insiders might sell for any number of reasons, but they buy for only one: they think the price will rise.

Net selling for 12 consecutive quarters through Q1'26
140,586 shares sold over last 4 quarters worth approximately $31.6 million
CEO received $57.8 million in stock compensation in 2025
Last insider buying occurred in Q1'22 with ratio of 1.14

This framework's asymmetric view gives heavy weight to the absence of buying - not a single insider purchase in 12 quarters despite record cash generation. When those running the business won't buy shares at any price, that's a clear signal.

Insider Net Buying/Selling
THE BALANCE SHEET TESTfortress

Can the company survive trouble?

Cash position of $1.2 billion with minimal debt
Free cash flow margin of 20.7% in Q1'26
Current ratio and interest coverage metrics healthy
Operating cash flow grew from $48.3M to $204.1M year-over-year

The framework sees a fortress balance sheet - substantial cash, minimal debt, and strong cash generation provide enormous flexibility. This company could survive years of trouble, giving management time to execute the growth story.

Current Ratio
KEY NUMBERS
VERDICT

Applying this framework reveals a fast grower with an exceptionally clear story - Zero Trust security with pricing power and fortress balance sheet. The PEG equivalent of 1.09 suggests fair value, but persistent insider selling for 12 quarters raises the key question this framework always asks. If management won't buy their own shares after selling $31.6 million worth, why should you?

This analysis applies Peter Lynch's published investment framework to publicly available financial data. It is not authored by, endorsed by, or affiliated with Peter Lynch. Educational purposes only. Not financial advice.

OTHER PERSPECTIVES
Warren Buffett framework
The Owner-Operator
Leaning Bearish
Howard Marks framework
The Cycle Whisperer
Leaning Bearish
Michael Mauboussin framework
The Expectations Engineer
Leaning Bearish
Benjamin Graham framework
The Value Architect
Bearish
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