Zscaler, Inc.
Zscaler, Inc. (ZS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ZS · as of Mar 31, 2025
Ownership Breakdown
849
Institutional Holders
▲ 15 vs Q4
$16.70B
Total Inst. Value
▲ $3.04B vs Q4
161.71M
Shares Outstanding
freeFloat 64.62%
85.23M
13F Shares Held
▲ 8.50M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ZS largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC services-computer programming services | 9.89M | 6.44% | 6.44% | $1.96T | May 9, 2025 | ▲ 294.0K |
BLACKROCK, INC. services-computer programming services | 6.85M | 4.46% | 4.46% | $1.36T | May 2, 2025 | ▲ 263.9K |
UBS ASSET MANAGEMENT AMERICAS INC services-computer programming services | 3.13M | 2.04% | 2.04% | $620.69B | May 19, 2025 | ▲ 527.0K |
AMERICAN CENTURY COMPANIES INC services-computer programming services | 2.94M | 1.91% | 1.91% | $582.88B | May 13, 2025 | ▲ 75.5K |
GOLDMAN SACHS GROUP INC services-computer programming services | 2.84M | 1.85% | 1.85% | $563.82B | Jun 27, 2025 | ▲ 361.5K |
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. services-computer programming services | 2.60M | 1.69% | 1.69% | $516.62B | May 14, 2025 | NEW |
FIRST TRUST ADVISORS LP services-computer programming services | 2.56M | 1.67% | 1.67% | $508.71B | May 14, 2025 | ▲ 277.1K |
STATE STREET CORP services-computer programming services | 2.13M | 1.38% | 1.38% | $422.25B | May 15, 2025 | ▲ 28.1K |
FMR LLC services-computer programming services | 1.86M | 1.21% | 1.21% | $369.48B | May 12, 2025 | ▲ 34.0K |
DEUTSCHE BANK AG\ services-computer programming services | 1.81M | 1.18% | 1.18% | $358.35B | May 9, 2025 | ▲ 174.0K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
39
Increased
+11.15M shares2
New Positions
first time holders9
Decreased
−1.59M shares0
Sold Out
fully exitedNet shares change (top 50)
+9.56M
+11.15M / −1.59M
Net new holders
+32
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ZS insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
7
Buy transactions
9
Sell transactions
0.78
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Geller Adam Chief Product Officer | Mar 17, 2026 | Sale | 1,485 | $156.59 | $232.5K | 49.0K | Form 4 ↗ |
Geller Adam Chief Product Officer | Mar 18, 2026 | Sale | 2,094 | $153.53 | $321.5K | 46.9K | Form 4 ↗ |
BEER JAMES A director | Mar 18, 2026 | Sale | 177 | $153.53 | $27.2K | 4.4K | Form 4 ↗ |
Chaudhry Jagtar Singh CEO & Chairman | Mar 17, 2026 | Sale | 1,941 | $156.59 | $303.9K | 345.9K | Form 4 ↗ |
RUBIN KEVIN Chief Financial Officer | Mar 17, 2026 | Sale | 1,682 | $156.59 | $263.4K | 46.5K | Form 4 ↗ |
Schlossman Robert Chief Legal Officer | Mar 17, 2026 | Sale | 2,263 | $156.59 | $354.4K | 72.4K | Form 4 ↗ |
Rich Michael J. CRO and President of WW Sales | Mar 17, 2026 | Sale | 3,147 | $156.59 | $492.8K | 104.3K | Form 4 ↗ |
Judge Raj EVP, Corp. Strategy & Ventures | Mar 17, 2026 | Sale | 2,488 | $156.59 | $389.6K | 67.9K | Form 4 ↗ |
Brown Andrew William Fraser director | Jan 12, 2026 | Award | 1,076 | — | — | 23.3K | Form 4 ↗ |
Darling Scott C director | Jan 12, 2026 | Award | 1,076 | — | — | 5.4K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Zscaler, Inc. (ZS) is primarily owned by institutional investors, who hold approximately 52.7% of total shares outstanding. Company insiders own approximately 35.38%, while retail and public investors account for the remaining 11.92%.
The largest institutional shareholder of Zscaler, Inc. is VANGUARD GROUP INC, holding approximately 9.89 million shares — equal to 6.44% of outstanding shares — as of March 31, 2025.
A total of 849 institutional investors currently hold ZS stock, with a combined institutional value of approximately $16.70 billion as of the most recent 13F filing period.
Frequently asked questions
ZS ownershipZscaler, Inc. (ZS) is primarily owned by institutional investors, who hold approximately 52.7% of shares. The largest shareholder is VANGUARD GROUP INC with a 6.44% stake. Company insiders hold 35.38%. Data sourced from SEC Form 13F as of March 31, 2025.