Palo Alto Networks, Inc.
CH ˙ SWX ˙ US6974351057
SecurityCH:PANW / Palo Alto Networks, Inc.
InstitutionRathbone Brothers plc
Latest Disclosed Ownership942,520 shares
Latest Disclosed Value $ 151,104,806
Rathbone Brothers plc reports 9.90% increase in ownership of PANW / Palo Alto Networks, Inc.

On May 12, 2026 - Rathbone Brothers plc filed a 13F-HR form disclosing ownership of 942,520 shares of Palo Alto Networks, Inc. (CH:PANW) valued at $151,104,806 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 6, 2026 disclosing 857,605 shares of Palo Alto Networks, Inc.. This represents a change in shares of 9.90% 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)
2026-05-12 2026-03-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 942,520 84,915 9.90 151,105 -4.35 0.6456
2026-02-06 2025-12-31 13F/A-1 PALO ALTO NETWORKS INC USD0.0001 COM 697435105 857,605 -11,378 -1.31 157,971 -10.72 0.6253
2026-01-21 2025-12-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 857,605 -11,378 157,971 0.6253
2025-11-13 2025-09-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 868,983 9,816 1.14 176,942 0.64 0.7185
2025-08-07 2025-06-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 859,167 36,949 4.49 175,820 25.31 0.7583
2025-05-13 2025-03-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 822,218 784 0.10 140,303 -6.13 0.6780
2025-02-13 2024-12-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 821,434 407,833 98.61 149,468 5.73 0.7236
2024-11-13 2024-09-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 413,601 -22,569 -5.17 141,369 -4.39 0.7134
2024-08-09 2024-06-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 436,170 17,028 4.06 147,866 24.16 0.8054
2024-05-14 2024-03-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 419,142 -38,748 -8.46 119,091 -11.80 0.6873
2024-02-13 2023-12-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 457,890 -1,288 -0.28 135,023 25.43 0.8702
2023-11-13 2023-09-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 459,178 272,619 146.13 107,650 125.84 0.7807
2023-08-04 2023-06-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 186,559 -1,911 -1.01 47,668 26.63 0.4449
2023-05-12 2023-03-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 188,470 45,184 31.53 37,645 88.28 0.3849
2023-02-14 2022-12-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 143,286 -20,039 -12.27 19,994 -25.26 0.2251
2022-11-14 2022-09-30 13F/A-1 PALO ALTO NETWORKS INC USD0.0001 COM 697435105 163,325 107,512 192.63 26,751 -2.96 0.3301
2022-11-03 2022-09-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 163,325 107,512 26,751 0.3301
2022-08-12 2022-06-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 55,813 805 1.46 27,568 -19.49 0.3160
2022-05-11 2022-03-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 55,008 472 0.87 34,243 12.78 0.3494
2022-02-10 2021-12-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 54,536 1,420 2.67 30,363 19.34 0.2951
2021-11-04 2021-09-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 53,116 11,802 28.57 25,443 65.97 0.2737
2021-07-30 2021-06-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 41,314 41,314 15,330 0.1703
2016-04-08 2016-03-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 0 0 0 0.0000
2016-01-19 2015-12-31 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 0 -1,290 -100.00 0 -100.00
2015-10-27 2015-09-30 13F PALO ALTO NETWORKS INC USD0.0001 COM 697435105 1,290 1,290 222 0.0148
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.