Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionJohnson Investment Counsel Inc
Latest Disclosed Ownership18,608 shares
Latest Disclosed Value $ 1,520,646
Johnson Investment Counsel Inc reports 1.16% decrease in ownership of FTNT / Fortinet, Inc.

On May 1, 2026 - Johnson Investment Counsel Inc filed a 13F-HR form disclosing ownership of 18,608 shares of Fortinet, Inc. (MX:FTNT) valued at $1,520,646 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 18,827 shares of Fortinet, Inc.. This represents a change in shares of -1.16% 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)
2026-05-01 2026-03-31 13F FORTINET COM 34959E109 18,608 -219 -1.16 1,521 1.67 0.0123
2026-02-13 2025-12-31 13F FORTINET COM 34959E109 18,827 -1,159 -5.80 1,495 -11.01 0.0122
2025-11-06 2025-09-30 13F FORTINET COM 34959E109 19,986 2,218 12.48 1,680 -10.54 0.0140
2025-07-25 2025-06-30 13F FORTINET COM 34959E109 17,768 -264 -1.46 1,878 8.24 0.0168
2025-04-21 2025-03-31 13F FORTINET COM 34959E109 18,032 -17 -0.09 1,736 1.76 0.0167
2025-02-07 2024-12-31 13F FORTINET COM 34959E109 18,049 -96 -0.53 1,705 21.18 0.0166
2024-11-04 2024-09-30 13F FORTINET CS 34959E109 18,145 -384 -2.07 1,407 26.08 0.0138
2024-08-08 2024-06-30 13F FORTINET CS 34959E109 18,529 5 0.03 1,117 -11.78 0.0118
2024-05-09 2024-03-31 13F FORTINET CS 34959E109 18,524 -2,172 -10.49 1,265 4.46 0.0138
2024-02-07 2023-12-31 13F FORTINET CS 34959E109 20,696 200 0.98 1,211 0.75 0.0142
2023-11-13 2023-09-30 13F FORTINET CS 34959E109 20,496 -582 -2.76 1,203 -24.54 0.0155
2023-08-10 2023-06-30 13F FORTINET COM 34959E109 21,078 -127 -0.60 1,593 13.06 0.0198
2023-05-15 2023-03-31 13F FORTINET COM 34959E109 21,205 1,810 9.33 1,409 48.63 0.0187
2023-02-14 2022-12-31 13F FORTINET COM 34959E109 19,395 -1,400 -6.73 948 -7.24 0.0129
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 20,795 -250 -1.19 1,022 -14.19 0.0151
2022-08-15 2022-06-30 13F FORTINET COM 34959E109 21,045 16,867 403.71 1,191 -16.60 0.0169
2022-05-11 2022-03-31 13F Fortinet COMMON EQUITY 34959E109 4,178 56 1.36 1,428 -3.58 0.0177
2022-02-15 2021-12-31 13F Fortinet COMMON EQUITY 34959E109 4,122 -50 -1.20 1,481 21.59 0.0181
2021-11-12 2021-09-30 13F Fortinet COMMON EQUITY 34959E109 4,172 -431 -9.36 1,218 11.13 0.0163
2021-08-13 2021-06-30 13F Fortinet COMMON EQUITY 34959E109 4,603 -58 -1.24 1,096 27.44 0.0156
2021-05-14 2021-03-31 13F Fortinet COMMON EQUITY 34959E109 4,661 -100 -2.10 860 21.64 0.0129
2021-02-12 2020-12-31 13F Fortinet COMMON EQUITY 34959E109 4,761 11 0.23 707 26.25 0.0118
2020-11-16 2020-09-30 13F Fortinet COMMON EQUITY 34959E109 4,750 -323 -6.37 560 -19.54 0.0104
2020-08-13 2020-06-30 13F Fortinet COMMON EQUITY 34959E109 5,073 -70 -1.36 696 33.85 0.0141
2020-05-20 2020-03-31 13F Fortinet COMMON EQUITY 34959E109 5,143 -387 -7.00 520 -11.86 0.0115
2020-02-13 2019-12-31 13F Fortinet COMMON EQUITY 34959E109 5,530 -365 -6.19 590 30.24 0.0111
2019-11-14 2019-09-30 13F Fortinet COMMON 34959E109 5,895 59 1.01 453 1.12 0.0090
2019-08-14 2019-06-30 13F FORTINET Common 34959E109 5,836 6 0.10 448 -8.38 0.0093
2019-05-13 2019-03-31 13F FORTINET Common 34959E109 5,830 -16,335 -73.70 489 -68.67 0.0104
2019-02-13 2018-12-31 13F FORTINET Common 34959E109 22,165 -2,581 -10.43 1,561 -31.63 0.0380
2018-11-14 2018-09-30 13F FORTINET Common 34959E109 24,746 -84 -0.34 2,283 47.29 0.0507
2018-08-14 2018-06-30 13F FORTINET Common 34959E109 24,830 -3,235 -11.53 1,550 3.13 0.0380
2018-05-15 2018-03-31 13F FORTINET Common 34959E109 28,065 -1,100 -3.77 1,503 17.97 0.0384
2018-02-14 2017-12-31 13F FORTINET Common 34959E109 29,165 -1,785 -5.77 1,274 14.88 0.0318
2017-11-14 2017-09-30 13F FORTINET Common 34959E109 30,950 -8,555 -21.66 1,109 -25.02 0.0293
2017-08-14 2017-06-30 13F FORTINET Common 34959E109 39,505 -55,710 -58.51 1,479 -59.49 0.0412
2017-05-12 2017-03-31 13F FORTINET Common 34959E109 95,215 -3,785 -3.82 3,651 22.48 0.1055
2017-02-14 2016-12-31 13F FORTINET Common 34959E109 99,000 -16,410 -14.22 2,981 -30.06 0.0917
2016-11-14 2016-09-30 13F FORTINET Common 34959E109 115,410 -925 -0.80 4,262 15.97 0.1364
2016-08-11 2016-06-30 13F FORTINET Common 34959E109 116,335 -6,995 -5.67 3,675 -2.70 0.1210
2016-05-13 2016-03-31 13F FORTINET Common 34959E109 123,330 8,310 7.22 3,777 5.36 0.1322
2016-02-12 2015-12-31 13F FORTINET Common 34959E109 115,020 -12,900 -10.08 3,585 -34.03 0.1257
2015-11-16 2015-09-30 13F FORTINET Common 34959E109 127,920 -8,505 -6.23 5,434 -3.62 0.1994
2015-08-14 2015-06-30 13F FORTINET Common 34959E109 136,425 -2,675 -1.92 5,638 15.98 0.1893
2015-05-14 2015-03-31 13F FORTINET Common 34959E109 139,100 -7,890 -5.37 4,861 7.88 0.1630
2015-02-17 2014-12-31 13F FORTINET Common 34959E109 146,990 -2,865 -1.91 4,506 19.02 0.1483
2014-11-14 2014-09-30 13F FORTINET Common 34959E109 149,855 149,855 3,786 0.1268
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.