FFIV
F5 Networks Inc
432.00$
-0.6%
vs. previous close
Closing price · As of: Sep 18, 2026
Ownership
Ownership Structure
Who owns F5 Networks Inc (FFIV)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.0% of the shares are freely tradable; institutional investors hold 110.3%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
110.3%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
0.5%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
99.0%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
3.7%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
57Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 11.01 | 6,234,427 | -0.7 | 03/31/2026 |
| Hotchkis & Wiley Capital Management LLC | 8.09 | 4,579,301 | -16.3 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.48 | 3,670,141 | +0.0 | 03/31/2026 |
| State Street Corp | 5.26 | 2,979,029 | -4.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.25 | 2,975,594 | +0.0 | 03/31/2026 |
| Jericho Capital Asset Management LP | 3.74 | 2,118,749 | -19.8 | 06/30/2026 |
| Geode Capital Management, LLC | 3.08 | 1,742,470 | +1.6 | 03/31/2026 |
| First Trust Advisors L.P. | 2.72 | 1,540,207 | +4.3 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.17 | 1,796,206 | +0.3 | 07/31/2026 |
| Vanguard 500 Index Investor | 2.62 | 1,481,397 | +1.1 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Locoh-Donou Francois | President, CEO & Director | 146,989 | 63,499,248 $ | Aug 5, 2026 | direct |
| Whalen Chad Michael | EVP, Worldwide Sales | 21,536 | 9,303,552 $ | Aug 3, 2026 | direct |
| Anand Kunal | Chief Technology Officer | 12,586 | 5,437,152 $ | Aug 3, 2026 | direct |
| Fountain Thomas Dean | EVP Global Services & Strategy | 8,060 | 3,481,920 $ | Aug 5, 2026 | direct |
| Mehta Nikhil Ramesh | Director | 7,043 | 3,042,576 $ | Jul 30, 2026 | direct |
| Okeke Angelique M | EVP, General Counsel | 2,240 | 967,680 $ | Aug 3, 2026 | direct |
| Montoya Michael F | Chief Technology Ops Officer | 1,309 | 565,488 $ | Sep 14, 2026 | direct |
| Maddison John Anthony | Chief Product Mkting Officer | 1,149 | 496,368 $ | Sep 14, 2026 | direct |
| Werner Edward Cooper | Chief Financial Officer | 406 | 175,392 $ | Aug 3, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 14, 2026 | Maddison John Anthony | Chief Product Mkting Officer | Sell | 204 | 406.24 | 82,873 |
| Sep 14, 2026 | Montoya Michael F | Chief Technology Ops Officer | Sell | 80 | 414.18 | 33,135 |
| Sep 14, 2026 | Montoya Michael F | Chief Technology Ops Officer | Sell | 440 | 413.31 | 181,858 |
| Sep 14, 2026 | Montoya Michael F | Chief Technology Ops Officer | Sell | 920 | 412.38 | 379,387 |
| Sep 14, 2026 | Montoya Michael F | Chief Technology Ops Officer | Sell | 1,173 | 411.50 | 482,691 |
| Sep 14, 2026 | Montoya Michael F | Chief Technology Ops Officer | Sell | 277 | 410.37 | 113,671 |
| Sep 14, 2026 | Montoya Michael F | Chief Technology Ops Officer | Sell | 240 | 408.96 | 98,150 |
| Sep 14, 2026 | Montoya Michael F | Chief Technology Ops Officer | Sell | 1,296 | 406.24 | 526,487 |
| Aug 5, 2026 | Fountain Thomas Dean | EVP Global Services & Strategy | Sell | 1,208 | 414.63 | 500,873 |
| Aug 5, 2026 | Locoh-Donou Francois | President, CEO & Director | Sell | 40 | 416.83 | 16,673 |
| Aug 5, 2026 | Locoh-Donou Francois | President, CEO & Director | Sell | 284 | 415.03 | 117,870 |
| Aug 5, 2026 | Locoh-Donou Francois | President, CEO & Director | Sell | 320 | 414.10 | 132,512 |
| Aug 5, 2026 | Locoh-Donou Francois | President, CEO & Director | Sell | 996 | 412.90 | 411,244 |
| Aug 5, 2026 | Locoh-Donou Francois | President, CEO & Director | Sell | 642 | 411.82 | 264,390 |
| Aug 5, 2026 | Locoh-Donou Francois | President, CEO & Director | Sell | 1,100 | 410.94 | 452,035 |
| Aug 5, 2026 | Locoh-Donou Francois | President, CEO & Director | Sell | 200 | 415.97 | 83,193 |
| Aug 3, 2026 | Okeke Angelique M | EVP, General Counsel | Sell | 515 | 404.49 | 208,315 |
| Aug 3, 2026 | Maddison John Anthony | Chief Product Mkting Officer | Sell | 1,000 | 405.85 | 405,853 |
| Aug 3, 2026 | Werner Edward Cooper | Chief Financial Officer | Sell | 599 | 405.92 | 243,146 |
| Aug 3, 2026 | Anand Kunal | Chief Technology Officer | Sell | 392 | 404.63 | 158,615 |
| Aug 3, 2026 | Whalen Chad Michael | EVP, Worldwide Sales | Sell | 703 | 404.86 | 284,617 |
| Aug 1, 2026 | Okeke Angelique M | EVP, General Counsel | Other | 415 | 402.57 | 167,067 |
| Aug 1, 2026 | Okeke Angelique M | EVP, General Counsel | Other | 1,060 | 0.00 | – |
| Aug 1, 2026 | Maddison John Anthony | Chief Product Mkting Officer | Other | 250 | 402.57 | 100,643 |
| Aug 1, 2026 | Maddison John Anthony | Chief Product Mkting Officer | Other | 454 | 0.00 | – |
| Aug 1, 2026 | Werner Edward Cooper | Chief Financial Officer | Other | 388 | 402.57 | 156,197 |
| Aug 1, 2026 | Werner Edward Cooper | Chief Financial Officer | Other | 987 | 0.00 | – |
| Aug 1, 2026 | Anand Kunal | Chief Technology Officer | Other | 506 | 402.57 | 203,700 |
| Aug 1, 2026 | Anand Kunal | Chief Technology Officer | Other | 1,290 | 0.00 | – |
| Aug 1, 2026 | Montoya Michael F | Chief Technology Ops Officer | Other | 840 | 402.57 | 338,159 |
| Aug 1, 2026 | Montoya Michael F | Chief Technology Ops Officer | Other | 2,136 | 0.00 | – |
| Aug 1, 2026 | Whalen Chad Michael | EVP, Worldwide Sales | Other | 911 | 402.57 | 366,741 |
| Aug 1, 2026 | Whalen Chad Michael | EVP, Worldwide Sales | Other | 2,318 | 0.00 | – |
| Aug 1, 2026 | Fountain Thomas Dean | EVP Global Services & Strategy | Other | 1,492 | 402.57 | 600,634 |
| Aug 1, 2026 | Fountain Thomas Dean | EVP Global Services & Strategy | Other | 2,700 | 0.00 | – |
| Aug 1, 2026 | Locoh-Donou Francois | President, CEO & Director | Other | 2,451 | 402.57 | 986,699 |
| Aug 1, 2026 | Locoh-Donou Francois | President, CEO & Director | Other | 6,233 | 0.00 | – |
| Jul 30, 2026 | Mehta Nikhil Ramesh | Director | Sell | 198 | 391.72 | 77,560 |
| Jul 30, 2026 | Mehta Nikhil Ramesh | Director | Sell | 458 | 390.93 | 179,046 |
| Jul 30, 2026 | Mehta Nikhil Ramesh | Director | Sell | 992 | 390.07 | 386,950 |
| Jul 30, 2026 | Mehta Nikhil Ramesh | Director | Sell | 692 | 388.68 | 268,966 |
| Jul 30, 2026 | Mehta Nikhil Ramesh | Director | Sell | 717 | 388.10 | 278,269 |
| Jul 30, 2026 | Mehta Nikhil Ramesh | Director | Sell | 943 | 387.07 | 365,004 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.