Zscaler, Inc. ZS NASDAQ

NASDAQ Global Select • Technology • Software - Infrastructure • US • USD

SharesGrow Score

54/100

4/7 Pass

SharesGrow Intrinsic Value

Zscaler, Inc. (ZS) has 18 known insider and institutional holders on record. The largest holder is Mangal Ajay with 2,550,210 shares. Other notable holders include Chaudhry Jagtar Singh and Rajic Dali.

Over the last 12 months, insiders have made 61 transactions in ZS stock — 15 buys (valued at $14.75M) and 41 sells (valued at $40.27M). Insider selling has exceeded buying during this period.

ZS Insider Ownership

Top Holder

Mangal Ajay

2,550,210 shares

Buys (12 mo)

$14.75M value

Sells (12 mo)

$40.27M value

12-Month Transaction Activity

Buy 25%

Sell 67%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Mangal Ajay	10 Percent Owner	2,550,210	2025-06-11	100%
2	Chaudhry Jagtar Singh	10 Percent Owner, Officer: CEO & Chairman	345,916	2026-03-18	14%
3	Rajic Dali	Chief Operating Officer	240,543	2023-12-19	9%
4	Canessa Remo	Chief Financial Officer	213,702	2025-03-20	8%
5	Giancarlo Charles H	Director	145,451	2026-01-13	6%
6	Nair Syam	CTO	106,659	2025-06-18	4%
7	Rich Michael J.	Cro and President of Ww Sales	104,350	2026-03-18	4%
8	Schlossman Robert	Chief Legal Officer	72,390	2026-03-18	3%
9	Judge Raj	EVP, Corp. Strategy & Ventures	67,906	2026-03-18	3%
10	Geller Adam	Chief Product Officer	49,043	2026-03-19	2%
11	Rubin Kevin	Chief Financial Officer	46,479	2026-03-18	2%
12	Blasing Karen	Director	42,757	2026-01-13	2%
13	Sinha Amit	Director	31,280	2024-01-02	1%
14	Schneider David	Director	24,912	2026-01-13	1%
15	Brown Andrew William Fraser	Director	23,292	2026-01-13	1%
16	Naughton Eileen	Director	7,745	2026-01-13	0%
17	Darling Scott C	Director	5,351	2026-01-13	0%
18	Beer James A	Director	4,384	2026-03-19	0%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-03-18	Geller Adam	Chief Product Officer	Informative Sell	2,094	$153.53	$321.49K
2026-03-17	Geller Adam	Chief Product Officer	Informative Sell	1,485	$156.59	$232.54K
2026-03-18	Beer James A	Director	Informative Sell	177	$153.53	$27.17K
2026-03-17	Judge Raj	EVP, Corp. Strategy & Ventures	Informative Sell	2,488	$156.59	$389.6K
2026-03-17	Rich Michael J.	Cro and President of Ww Sales	Informative Sell	3,147	$156.59	$492.8K
2026-03-17	Schlossman Robert	Chief Legal Officer	Informative Sell	2,263	$156.59	$354.37K
2026-03-17	Chaudhry Jagtar Singh	10 Percent Owner, Officer: CEO & Chairman	Informative Sell	1,941	$156.59	$303.95K
2026-03-17	Rubin Kevin	Chief Financial Officer	Informative Sell	1,682	$156.59	$263.39K
2026-01-12	Darling Scott C	Director	RSU Award	1,076	-	-
2026-01-12	Brown Andrew William Fraser	Director	RSU Award	1,076	-	-
2026-01-12	Schneider David	Director	RSU Award	1,076	-	-
2026-01-12	Naughton Eileen	Director	RSU Award	1,076	-	-
2026-01-12	Giancarlo Charles H	Director	RSU Award	1,076	-	-
2026-01-12	Beer James A	Director	RSU Award	1,076	-	-
2026-01-12	Blasing Karen	Director	RSU Award	1,076	-	-
2026-01-02	Beer James A	Director	Informative Sell	653	$226.72	$148.05K
2025-12-26	Brown Andrew William Fraser	Director	Informative Sell	5,000	-	-
2025-12-16	Judge Raj	EVP, Corp. Strategy & Ventures	Informative Sell	3,438	$230.82	$793.56K
2025-12-17	Geller Adam	Chief Product Officer	Informative Sell	1,620	$232.79	$377.12K
2025-12-16	Geller Adam	Chief Product Officer	Informative Sell	2,060	$230.82	$475.49K
2025-12-16	Rich Michael J.	Cro and President of Ww Sales	Informative Sell	4,100	$230.82	$946.36K
2025-12-17	Schlossman Robert	Chief Legal Officer	Informative Sell	2,349	$232.79	$546.82K
2025-12-16	Schlossman Robert	Chief Legal Officer	Informative Sell	3,084	$230.82	$711.85K
2025-12-16	Chaudhry Jagtar Singh	10 Percent Owner, Officer: CEO & Chairman	Informative Sell	2,843	$230.82	$656.22K
2025-12-16	Rubin Kevin	Chief Financial Officer	Informative Sell	3,303	$230.82	$762.4K