주식회사 지스케일러
MX ˙ BMV ˙ US98980G1022
SecurityMX:ZS / Zscaler, Inc.
InstitutionFlagship Harbor Advisors, Llc
Latest Disclosed Ownership3,387 shares
Latest Disclosed Value $ 475,165
Flagship Harbor Advisors, Llc reports 7.56% increase in ownership of ZS / Zscaler, Inc.

On April 28, 2026 - Flagship Harbor Advisors, Llc filed a 13F-HR form disclosing ownership of 3,387 shares of Zscaler, Inc. (MX:ZS) valued at $475,165 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 3,149 shares of Zscaler, Inc.. This represents a change in shares of 7.56% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-28 2026-03-31 13F ZSCALER COM 98980G102 3,387 238 7.56 475 -32.91 0.0209
2026-01-21 2025-12-31 13F ZSCALER Common Stock 98980G102 3,149 -142 -4.31 708 -28.19 0.0334
2025-11-05 2025-09-30 13F ZSCALER COM 98980G102 3,291 -7 -0.21 986 -4.73 0.0429
2025-08-04 2025-06-30 13F ZSCALER COM 98980G102 3,298 -81 -2.40 1,035 54.48 0.0490
2025-04-22 2025-03-31 13F ZSCALER COM 98980G102 3,379 -22 -0.65 670 9.30 0.0353
2025-01-21 2024-12-31 13F ZSCALER COM 98980G102 3,401 -1,009 -22.88 614 -18.59 0.0322
2024-10-21 2024-09-30 13F ZSCALER COM 98980G102 4,410 949 27.42 754 13.23 0.0414
2025-12-02 2024-06-30 13F ZSCALER COM 98980G102 3,461 -89 -2.51 665 -2.64 0.0400
2024-04-16 2024-03-31 13F ZSCALER COM 98980G102 3,550 183 5.44 684 -8.32 0.0439
2024-01-10 2023-12-31 13F ZSCALER COM 98980G102 3,367 102 3.12 746 46.65 0.0542
2023-10-17 2023-09-30 13F ZSCALER COM 98980G102 3,265 83 2.61 508 9.25 0.0423
2023-07-11 2023-06-30 13F ZSCALER COM 98980G102 3,182 545 20.67 466 50.97 0.0385
2023-04-12 2023-03-31 13F ZSCALER COM 98980G102 2,637 -10 -0.38 308 4.05 0.0290
2023-01-13 2022-12-31 13F ZSCALER COM 98980G102 2,647 215 8.84 296 -26.00 0.0304
2022-10-13 2022-09-30 13F ZSCALER COM 98980G102 2,432 80 3.40 400 13.64 0.0464
2022-07-13 2022-06-30 13F ZSCALER COM 98980G102 2,352 -25 -1.05 352 -38.68 0.0395
2022-04-13 2022-03-31 13F ZSCALER COM 98980G102 2,377 105 4.62 574 -21.37 0.0553
2022-02-17 2021-12-31 13F/A-1 ZSCALER COM 98980G102 2,272 100 4.60 730 55.65 0.0691
2022-02-10 2021-12-31 13F ZSCALER COM 98980G102 2,272 100 730 0.0691
2021-11-01 2021-09-30 13F ZSCALER COM 98980G102 2,172 0 0.00 469 0.00 0.0504
2021-07-26 2021-06-30 13F ZSCALER COM 98980G102 2,172 -50 -2.25 469 23.10 0.0503
2021-05-03 2021-03-31 13F ZSCALER COM 98980G102 2,222 62 2.87 381 -11.60 0.0433
2021-02-08 2020-12-31 13F ZSCALER COM 98980G102 2,160 45 2.13 431 45.12 0.0534
2020-10-13 2020-09-30 13F ZSCALER Common Stock 98980G102 2,115 0 0.00 297 28.57 0.0401
2020-07-31 2020-06-30 13F ZSCALER Common Stock 98980G102 2,115 40 1.93 231 83.33 0.0339
2020-05-12 2020-03-31 13F ZSCALER Common Stock 98980G102 2,075 1,275 159.38 126 240.54 0.0252
2020-02-14 2019-12-31 13F ZSCALER Common Stock 98980G102 800 785 5,233.33 37 0.0065
2019-10-22 2019-09-30 13F ZSCALER Common Stock 98980G102 15 0 0.00 0 -100.00
2019-07-22 2019-06-30 13F ZSCALER Common Stock 98980G102 15 15 1 0.0002
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.