• Zscaler is a public company that still runs like a founder's business. It trades on the Nasdaq under the ticker ZS, yet founder Jay Chaudhry and trusts benefiting his family control roughly a third of the shares, an unusually large insider position for a company this size.

  • Jay Chaudhry founded Zscaler in 2007 and remains chairman and chief executive. As of the November 2025 proxy, he beneficially owned about 16.8% of the stock directly and through his own trusts, with a further 18.2% held in family trusts administered by a separate trustee.

  • Institutions hold the rest, led by index giants and early venture backers. The Vanguard Group and BlackRock are the largest outside holders, while pre-IPO investors TPG Growth, Lightspeed Venture Partners, EMC, and Google's CapitalG seeded the company before its 2018 listing.

  • Zscaler's market capitalization was about $31.9 billion in September 2026. The company closed fiscal 2026 with $3.4 billion in revenue, up 25% year over year, and annual recurring revenue of $3.77 billion.

Zscaler is one of the defining names in cloud security, the company that popularized the idea that traffic should be inspected in the cloud rather than routed back through a corporate data center. Its platform sits between users and the applications they reach, enforcing a "zero trust" model in which no connection is assumed safe. That approach turned a 2007 startup into a business generating billions in recurring revenue and serving thousands of large enterprises.

The ownership question matters because Zscaler is a public company that behaves, at the top of its cap table, like a private one. Most large-cap software firms are controlled by diversified institutions with no single dominant voice. Zscaler is different: its founder and his family still hold roughly a third of the equity, and he chairs the board he reports to. That concentration shapes strategy, capital allocation, and how much sway outside shareholders actually have.

This article breaks down who owns Zscaler today: the founder's stake and how it is structured, the institutions on the register, the investors who backed it before it went public, and the people who run it. It also covers the share structure, the ownership timeline, and the risks that come with a founder-led, richly valued security company.

Company overview

Zscaler was founded in 2007 by Jay Chaudhry, a serial security entrepreneur, together with co-founder K. Kailash. The company is headquartered in San Jose, California. Chaudhry had already built and sold several security companies before Zscaler, and he funded much of the early business himself rather than raising large venture rounds at the outset.

The product is a cloud-delivered security platform. Its flagship services, Zscaler Internet Access and Zscaler Private Access, inspect and route traffic through Zscaler's own global network so that security policy follows the user rather than the office. This "secure access service edge" (SASE) and zero-trust model replaced the older approach of backhauling traffic to on-premise firewalls, and it lines Zscaler up against network-security incumbents and a wave of newer cloud rivals.

Zscaler sells on a subscription basis, which makes annual recurring revenue (ARR) its clearest scoreboard. For fiscal 2026, which ended July 31, 2026, the company reported revenue of $3.4 billion, up 25% year over year, and ARR of $3.77 billion, also up 25%. Free cash flow reached $779 million, a 23% margin. Its market capitalization stood at roughly $31.9 billion in mid-September 2026, well below its 52-week high near $337 a share, a reminder of how volatile security valuations can be.

Ownership structure

Publicly held, founder-controlled

Zscaler is a publicly traded company. Anyone can buy its shares on the Nasdaq, and index funds hold large blocks on behalf of ordinary investors. But public ownership does not mean dispersed control here. Between the founder's personal holdings and the trusts set up for his family, the Chaudhry side of the register controls close to 35% of the company, which is enough to shape any shareholder vote and to make a hostile change of control effectively impossible.

Founder equity

Jay Chaudhry is the anchor of Zscaler's cap table. According to the company's definitive proxy statement filed in late 2025, he beneficially owned 26,857,608 shares, or about 16.8% of the stock, measured as of November 1, 2025. That figure is spread across several vehicles: a small direct holding of around 325,000 shares, roughly 2.2 million shares in one family trust, and about 24.3 million shares in a trust whose trustee is his wife, Jyoti Chaudhry.

A separate and larger block sits just outside that count. Trusts administered by trustee Ajay Mangal, including the CJCP Trust and three CKS Trusts, held 29,084,052 shares, or 18.2%. The proxy states that the beneficiaries of these trusts are members of Jay Chaudhry's family. Combining Chaudhry's own reported stake with these family trusts puts the founder's household in control of roughly a third of Zscaler's equity. Precise figures shift as trusts buy, sell, and gift shares, so the exact combined percentage moves over time, but the concentration is consistent across filings.

Major shareholders

The table below shows the largest disclosed holders. Percentages are drawn from Zscaler's late-2025 proxy statement and subsequent regulatory filings, so they reflect slightly different dates.

Shareholder

Approx. stake

Type

Family trusts (trustee Ajay Mangal)

18.2%

Founder-family trusts

Jay Chaudhry (direct and personal trusts)

16.8%

Founder and chief executive

The Vanguard Group

7.1%

Institutional (index funds)

BlackRock

5.1%

Institutional (index funds)

FMR (Fidelity)

under 5%

Institutional (active and index)

Key institutional investors

The Vanguard Group is the largest purely financial holder, with about 7.1% as of the 2025 proxy, held mostly through its index funds. BlackRock disclosed a passive 5.1% stake as of June 30, 2026. These two are not activist owners: they hold Zscaler because it sits in the indexes they track, and they generally vote with management on routine matters. FMR, the parent of Fidelity, is another top-ten holder, alongside State Street, Goldman Sachs, and Geode Capital Management. In aggregate, institutions held roughly half of Zscaler's outstanding shares in late 2025, with the founder and his family accounting for most of the rest.

Some of Zscaler's earliest institutional backers remain relevant to its story even where their current stakes are no longer separately disclosed. TPG Growth led a large pre-IPO round and was the biggest outside investor going into the listing, while Lightspeed Venture Partners, EMC, and Google's growth arm CapitalG also backed the company before 2018. This pattern of concentrated founder control alongside index-fund ownership is common among cloud-security peers, though the mechanics vary: a useful contrast is Cloudflare's dual-class founder control, where the founders keep power through supervoting shares rather than a large economic stake.

Share and voting structure

Zscaler has a single class of common stock, with one vote per share. This is a meaningful detail. Many founder-led technology companies protect insider control with dual-class structures that give founders supervoting shares, letting them command a majority of votes while owning a minority of the economics. Zscaler did not take that route. Chaudhry's influence rests on the size of his and his family's actual shareholding, not on a special class of stock. His control is therefore real but also economically aligned: every vote he casts is backed by capital genuinely at risk.

Key people in control

Jay Chaudhry (legal name Jagtar Singh Chaudhry) has been chairman and chief executive since founding the company in 2007. He is both the largest shareholder and the person who runs the company day to day, a concentration of roles that gives him unusual authority. Under Nasdaq's independence standards he is not an independent director, given his executive role and ownership.

The wider executive team has been refreshed as Zscaler has scaled. Kevin Rubin serves as chief financial officer, signing the company's fiscal 2026 filings after the long tenure of former finance chief Remo Canessa. Syam Nair is chief technology officer, Mike Rich joined as chief revenue officer and president of global sales from ServiceNow, and Robert Schlossman is chief legal officer and secretary. Adam Geller is among the named executive officers on the product side.

The board, as listed in the 2025 proxy, includes Chaudhry as chairman alongside James Beer, Karen Blasing, Andrew Brown, Scott Darling, Charles Giancarlo, Eileen Naughton, David Schneider, and Raj Judge. What is confirmed is that Chaudhry chairs a board on which he is the dominant shareholder. What is harder to judge from the outside is how much genuinely independent challenge that board brings, a common question for founder-controlled companies.

Ownership history and timeline

Year

Event

2007

Jay Chaudhry and K. Kailash found Zscaler in San Jose, California, with Chaudhry funding much of the early business himself.

2008 to 2014

Zscaler builds its cloud-security platform and global network, staying private and raising limited outside capital.

2015

TPG Growth leads a $100 million investment; CapitalG, EMC, and Lightspeed Venture Partners are also backers, valuing the company above $1 billion.

March 2018

Zscaler goes public on the Nasdaq under ticker ZS, pricing its IPO at $16.00 per share and selling 13.8 million shares.

2019 to 2024

Rapid subscription growth lifts ARR into the billions; the stock swings widely with the broader security sector.

2025

Fiscal 2025 revenue reaches $2.67 billion; Zscaler agrees to buy managed-detection firm Red Canary for about $675 million, closing the deal on August 1, 2025.

September 2026

Zscaler reports fiscal 2026 revenue of $3.4 billion and ARR of $3.77 billion, both up 25%.

Regulatory and controversy issues

Valuation and stock volatility

Zscaler trades at a high multiple of its revenue, which makes the stock sensitive to any wobble in growth. Its shares ranged from about $115 to $337 over the year to September 2026, a swing of nearly three times from low to high. Growth-stock security names re-rate sharply when investors reassess how fast recurring revenue can compound, and Zscaler is squarely in that category. Investors trying to gauge whether the current price is fair often model the company's future cash flows; Revenue Memo's DCF calculator walks through that method.

Intense and well-funded competition

Zscaler competes across a crowded field. Palo Alto Networks and other network-security incumbents have pushed hard into cloud-delivered SASE, while how CrowdStrike's ownership is arranged sits behind a rival that has broadened from endpoint protection into adjacent security markets. Identity-focused peers such as the business behind Okta's ownership structure overlap on zero-trust access, and cloud-native newcomers keep the pressure on, including the fast-growing firm profiled in who controls Wiz after its sale to Google. Mapping these overlapping threats is exactly the kind of exercise a competitive analysis template is built for.

Insider selling

Because Chaudhry and his family hold so much stock, their trades draw attention. Founders and family trusts routinely sell shares under pre-arranged plans to diversify, and Zscaler filings show regular disposals from Chaudhry-linked entities. These sales are legal and disclosed, but a steady drip of insider selling can weigh on sentiment, and outside shareholders watch the pace closely for any signal about how the founder views the valuation.

Security incidents and scrutiny

As a company whose entire product is trust, Zscaler faces reputational risk from any security lapse, including breaches that touch its own systems or its supply chain. The company has disclosed and addressed incidents affecting third-party or connected systems, and it operates in a sector where short-seller reports and skeptical analysis are common. None of this is unique to Zscaler, but the stakes are higher for a vendor whose customers buy it specifically to keep them safe.

Why ownership matters

Zscaler's ownership structure is the clearest lens on how the company makes decisions. With roughly a third of the equity in the founder's household and Chaudhry chairing the board as chief executive, strategy flows from a single, long-tenured point of view. That has upsides. Founder-led companies can invest through downturns, resist pressure to manage quarter to quarter, and make big bets that a more cautious board might veto. Chaudhry's continuity since 2007 has given Zscaler a consistent product vision through several shifts in the security market.

The same concentration limits the influence of everyone else on the register. Index funds like Vanguard and BlackRock hold large blocks but rarely push founders on strategy, and no outside investor is positioned to force a change of direction. For minority shareholders, that means backing Zscaler is partly a bet on one person's judgment. It also means the usual market discipline of a possible takeover barely applies, because no acquirer can move without the founder's blessing.

Crucially, Zscaler achieves this control without a dual-class structure. Chaudhry's power comes from owning the shares, not from a special voting class, so his interests are tied directly to the stock price that ordinary holders also depend on. That alignment is a genuine strength, and it distinguishes Zscaler from founder-led peers that separate control from economic risk.

For customers and employees, founder control mostly reads as stability. A chief executive with a large personal stake and a decade and a half in the seat is unlikely to chase a quick sale or gut long-term research to flatter a single quarter. The trade-off is key-person risk: much of Zscaler's identity, direction, and investor confidence rests on one individual, and any question about succession would land harder here than at a company with more diffuse leadership.

Frequently asked questions

Who owns Zscaler?

Zscaler is a public company listed on the Nasdaq, so it is owned by its shareholders. The largest by far is founder and chief executive Jay Chaudhry, who together with trusts benefiting his family controls roughly a third of the shares. The remainder is held mostly by institutional investors such as Vanguard, BlackRock, and Fidelity, plus retail shareholders.

Who is the CEO of Zscaler?

Jay Chaudhry, who legally goes by Jagtar Singh Chaudhry, is the chairman and chief executive. He co-founded the company in 2007 and has led it ever since, making him both the top executive and the largest individual shareholder.

Is Zscaler publicly traded?

Yes. Zscaler went public in March 2018 and trades on the Nasdaq under the ticker ZS. It has a single class of common stock with one vote per share, so there is no separate supervoting class for insiders.

Who founded Zscaler?

Jay Chaudhry founded Zscaler in 2007 alongside co-founder K. Kailash. Chaudhry, a veteran security entrepreneur, funded much of the early company himself before it later raised venture capital and went public.

Who are Zscaler's biggest shareholders?

The biggest holder is the founder's side of the register: Jay Chaudhry's personal stake of about 16.8% plus family trusts holding roughly 18.2%. Among purely financial investors, The Vanguard Group and BlackRock are the largest, followed by other index and active managers.

What is Zscaler worth?

Zscaler's market capitalization was about $31.9 billion in mid-September 2026, with the stock near $196 a share. The company reported fiscal 2026 revenue of $3.4 billion and annual recurring revenue of $3.77 billion, both up 25% year over year.