Fortinet insider trading

Every open-market purchase and sale by Fortinet's officers, directors and largest shareholders since November 4, 2021, and what the share price did next.

Insider purchases, 5 years $336,461 9 trades by 1 insider 3 months later: median +2.1% (+7.0% vs S&P 500) Insider sales, 5 years $439M 104 trades by 8 insiders 3 months later: median +10.4% (+7.0% vs S&P 500)

Insider purchase Insider sale Marker size reflects trade value. Weekly closes adjusted for splits; may be delayed.

Fortinet insider open-market trades
Date	Insider	Trade	Shares	Price	Value	1M after	3M after	6M after

From insiders' Form 4 filings with the SEC: open-market purchases and sales only (awards, option exercises and shares withheld for tax are excluded), combined to one line per insider per day. "Plan" marks trades the filing says were made under a pre-set Rule 10b5-1 trading plan, which are scheduled in advance. Price changes run from the close on the trade date; hover a figure for the change relative to the S&P 500. Past moves don't predict future ones.

Does following Fortinet’s insiders pay?

From May 25, 2010 to June 6, 2025, 11 insiders reported 10 open-market purchases and 31 sales not made under a pre-set plan in Fortinet. Twelve months after each purchase was reported, the shares were +13.9% against the S&P 500 on average (median +3.1%), over 10 purchases with a full year of prices; 50% beat the index. After sales, the shares moved +25.5% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on August 12, 2020 into $51,595 by November 2, 2026, +30.3% a year. It held shares 67% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $26,151 (+16.8% a year), and held throughout $24,404 (+15.5%).

Copying Fortinet's insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by Fortinet's insiders from August 12, 2020, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 67% of the time.

Fortinet: each insider's record
Insider	Role	Purchases	12 months after their purchases	Beat the S&P 500	Sales	12 months after their sales	Latest report
Neukom William H.	Director	10	+13.9% (10)	50%	0	—	June 6, 2025
Lu Hong Liang	Director	0	—	—	7	−27.1% (7)	August 31, 2015
Walecka John L	Director	0	—	—	6	+83.1% (6)	February 28, 2011
Hsieh Ming	Director	0	—	—	5	+33.5% (5)	September 10, 2018
Xie Ken	President & CEO	0	—	—	5	+26.5% (5)	February 12, 2019
Jensen Keith	Chief Accounting Officer	0	—	—	3	−25.3% (3)	August 23, 2016
Chen Pehong	Director	0	—	—	1	−16.3% (1)	May 31, 2011
Cohen Peter Dale JR.	Director	0	—	—	1	+20.8% (1)	November 13, 2018
Ducourty Kelly	Director	0	—	—	1	+35.3% (1)	June 3, 2021
Hara George	Director	0	—	—	1	+188.7% (1)	June 1, 2010
Sim Judith	Director	0	—	—	1	+29.6% (1)	May 11, 2018

Moves are the shares’ return including dividends minus the S&P 500’s, from the close on the first trading day after each report; the number of trades with a finished 12-month window is in brackets. Green means the trade went the insider’s way (a purchase ahead of the index, a sale followed by the shares trailing it). A trade reported both by a director or officer and by a fund or company they are linked to counts once here, under the person. Purchases count only where the share price actually traded was at least $5. These figures describe what the shares did, not why anyone traded. Insiders across all companies.

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