Zscaler · ownership
Who owns Zscaler?
BlackRock, Inc. is the largest 13F holder: 11.9% of 13F-reported shares calc.
746 institutions report 83.0M Zscaler shares in Form 13F, as of quarter end Jun 30, 2026; −6.3M shares vs Mar 31, 2026.
- BlackRock, Inc.11.9%9.9M shares · +1.3M vs prior quarter (up) · 13F filed Aug 7, 2026
- VANGUARD PORTFOLIO MANAGEMENT LLC7.5%6.2M shares · +266K vs prior quarter (up) · 13F filed Aug 13, 2026
- VANGUARD CAPITAL MANAGEMENT LLC5.7%4.7M shares · +61K vs prior quarter (up) · 13F filed Aug 13, 2026
- FIRST TRUST ADVISORS LP4.3%3.5M shares · +11K vs prior quarter (up) · 13F filed Aug 11, 2026
- GOLDMAN SACHS GROUP INC3.8%3.2M shares · +237K vs prior quarter (up) · 13F filed Aug 14, 2026
- STATE STREET CORP3.0%2.5M shares · +109K vs prior quarter (up) · 13F filed Aug 7, 2026
- Pictet Asset Management Holding SA2.5%2.1M shares · +184K vs prior quarter (up) · 13F filed Jul 30, 2026
- GEODE CAPITAL MANAGEMENT, LLC2.5%2.1M shares · +4K vs prior quarter (up) · 13F filed Aug 12, 2026
- UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC2.1%1.7M shares · −234K vs prior quarter (down) · 13F filed Aug 13, 2026
- VICTORY CAPITAL MANAGEMENT INC2.0%1.7M shares · +120K vs prior quarter (up) · 13F filed Aug 7, 2026
- AQR CAPITAL MANAGEMENT LLC1.6%1.4M shares · +347K vs prior quarter (up) · 13F filed Aug 14, 2026
- Jericho Capital Asset Management L.P.1.6%1.4M shares · +1.4M vs prior quarter (new position) · 13F filed Aug 14, 2026
- Amundi1.4%1.1M shares · +130K vs prior quarter (up) · 13F filed Aug 26, 2026
- MORGAN STANLEY1.4%1.1M shares · −145K vs prior quarter (down) · 13F filed Aug 13, 2026
- MILLENNIUM MANAGEMENT LLC1.4%1.1M shares · +795K vs prior quarter (up) · 13F filed Aug 14, 2026
- WELLINGTON MANAGEMENT GROUP LLP1.3%1.1M shares · +210K vs prior quarter (up) · 13F filed Aug 14, 2026
- CITADEL ADVISORS LLC1.2%1.0M shares · +498K vs prior quarter (up) · 13F filed Aug 14, 2026
- BARCLAYS PLC1.1%952K shares · +282K vs prior quarter (up) · 13F filed Aug 14, 2026
- VOLORIDGE INVESTMENT MANAGEMENT, LLC1.1%882K shares · +455K vs prior quarter (up) · 13F filed Aug 14, 2026
- AMERICAN CENTURY COMPANIES INC1.0%866K shares · −1.5M vs prior quarter (down) · 13F filed Aug 12, 2026
Share of 13F-reported shares, not of shares outstanding. 13F covers managers with over $100M in US equities; it is not a full shareholder list.
Method and sources
Source: SEC Form 13F data sets (bulk). Each row links to the holder’s own 13F-HR filing. Holder names exactly as filed; one group can file under several names and CIKs (for example two Vanguard entities), and they are listed separately, as filed.
% = the holder’s shares ÷ all shares reported in 13F filings for this company and quarter (calculated by Hollsteen). This is not a share of shares outstanding. Change = shares vs the same filer’s 13F for the prior quarter (Mar 31, 2026).
Erroneous filings and rows are handled by a fixed rule set (restatements replace originals; non-equity rows and implausible rows excluded): 9 erroneous filings excluded or replaced this quarter. No market values are shown.
SEC filings only. No price or market data.
Who holds more than 5%?
1 current Schedule 13D/13G holder
Schedule 13D/13G filings (5) ›
- BlackRock, Inc. 5.1%
13G filed Jul 30, 2026 · event date Jun 30, 2026 · 2 earlier filings
- VANGUARD GROUP INC 0%
below 5% latest filing reports under 5% · 13G/A filed Mar 27, 2026 · event date Mar 13, 2026 · 5 earlier filings
- Mangal Ajay 19.82%
stale filed Feb 12, 2024, as of Dec 31, 2023: older than 18 months, not a current holding · 13G/A filed Feb 12, 2024 · 5 earlier filings
- Chaudhry Jagtar Singh 18.16%
stale filed Feb 12, 2024, as of Dec 31, 2023: older than 18 months, not a current holding · 13G/A filed Feb 12, 2024 · 5 earlier filings
- FMR LLC 2.2%
stale filed Feb 7, 2020: older than 18 months, not a current holding · 13G/A filed Feb 7, 2020 · 1 earlier filing
Method and sources
Schedule 13D (active) and 13G (passive) are filed by holders of more than 5% of a class. The percentage is the holder’s own cover-page “percent of class”. A filing older than 18 months (filed before 2025-04-17) is marked stale and is never shown as a current holding. Data as of Oct 14, 2026.
SEC filings only.
Are insiders buying or selling?
0 open-market purchases, 63 sales in 12 months
Form 4, Oct 14, 2025 – Oct 14, 2026 · 0 shares bought, 100,038 shares sold (net −100K) · as of Oct 14, 2026
Latest 25 of 188 Form 4 transactions ›
| Date | Insider (as filed) | Transaction | Shares | Held after |
|---|---|---|---|---|
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 100 disposed | 43,187 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 189 disposed | 42,998 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 118 disposed | 42,880 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 3 disposed | 42,877 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 9 disposed | 42,868 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 20 disposed | 42,848 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 5 disposed | 42,843 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 36 disposed | 42,807 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 12 disposed | 42,795 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 20 disposed | 42,775 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 4 disposed | 42,771 |
| Sep 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 3 disposed | 42,768 |
| Sep 21, 2026 | Geller Adam · Chief Product Officer | Open-market sale · 10b5-1 | 661 disposed | 38,308 |
| Sep 21, 2026 | Schlossman Robert · Chief Legal Officer | Open-market sale · 10b5-1 | 5,394 disposed | 61,525 |
| Sep 17, 2026 | Geller Adam · Chief Product Officer | Open-market sale · 10b5-1 | 4,584 disposed | 38,969 |
| Sep 17, 2026 | BEER JAMES A · Director | Open-market sale · 10b5-1 | 177 disposed | 4,030 |
| Sep 16, 2026 | Chaudhry Jagtar Singh · Director; CEO & Chairman; 10%-Owner | Open-market sale | 2,852 disposed | 340,186 |
| Sep 16, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale | 5,957 disposed | 43,287 |
| Sep 16, 2026 | Geller Adam · Chief Product Officer | Open-market sale · 10b5-1 | 5,578 disposed | 43,553 |
| Sep 16, 2026 | Rich Michael J. · CRO and President of WW Sales | Open-market sale | 4,108 disposed | 96,193 |
| Sep 16, 2026 | Schlossman Robert · Chief Legal Officer | Open-market sale | 2,325 disposed | 66,919 |
| Sep 15, 2026 | RUBIN KEVIN · Chief Financial Officer | Grant or award | 8,349 acquired | 49,244 |
| Sep 15, 2026 | Geller Adam · Chief Product Officer | Grant or award · 10b5-1 | 6,817 acquired | 49,131 |
| Aug 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 291 disposed | 41,107 |
| Aug 25, 2026 | RUBIN KEVIN · Chief Financial Officer | Open-market sale · 10b5-1 | 92 disposed | 41,015 |
Method and sources
Form 4 filings (not 4/A), table I. Open market = transaction codes P (purchase) and S (sale); grants, option exercises, tax withholding and gifts are listed but not counted as buys or sells. Shares and share counts only, as filed; Hollsteen shows no per-share prices. Data is an export, as of Oct 14, 2026, not live.
SEC filings only.