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            <secFileNumber>001-34511</secFileNumber>
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                <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                <ns2:zipCode>94086</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>4082357700</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>MICHAEL XIE</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
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            <securitiesClassTitle>Common</securitiesClassTitle>
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                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
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            <aggregateMarketValue>1947305.60</aggregateMarketValue>
            <noOfUnitsOutstanding>764907985</noOfUnitsOutstanding>
            <approxSaleDate>11/04/2024</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
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            <paymentDate>11/01/2024</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
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        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>12/31/2003</acquiredDate>
            <natureOfAcquisitionTransaction>Founders Shares</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>20000</amountOfSecuritiesAcquired>
            <paymentDate>12/31/2003</paymentDate>
            <natureOfPayment>N/A</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
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            <sellerDetails>
                <name>10b5-1 Sales for KEN QING XIE</name>
                <address>
                    <ns2:street1>909 Kifer Road</ns2:street1>
                    <ns2:city>Sunnyvale</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/16/2024</saleDate>
            <amountOfSecuritiesSold>23307</amountOfSecuritiesSold>
            <grossProceeds>1908675.49</grossProceeds>
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                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
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            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>10/15/2024</saleDate>
            <amountOfSecuritiesSold>23302</amountOfSecuritiesSold>
            <grossProceeds>1925546.79</grossProceeds>
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        <securitiesSoldInPast3Months>
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                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>09/18/2024</saleDate>
            <amountOfSecuritiesSold>23538</amountOfSecuritiesSold>
            <grossProceeds>1763843.57</grossProceeds>
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        <securitiesSoldInPast3Months>
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            <grossProceeds>1780962.95</grossProceeds>
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        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY</name>
                <address>
                    <ns2:street1>326 Galvez Street</ns2:street1>
                    <ns2:city>Stanford</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94305</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
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            <amountOfSecuritiesSold>263000</amountOfSecuritiesSold>
            <grossProceeds>19644416.80</grossProceeds>
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        <securitiesSoldInPast3Months>
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                <address>
                    <ns2:street1>909 Kifer Road</ns2:street1>
                    <ns2:city>Sunnyvale</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
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            <amountOfSecuritiesSold>23693</amountOfSecuritiesSold>
            <grossProceeds>1731095.87</grossProceeds>
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        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for XIE FOUNDATION</name>
                <address>
                    <ns2:street1>909 Kifer Road</ns2:street1>
                    <ns2:city>Sunnyvale</ns2:city>
                    <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                    <ns2:zipCode>94086</ns2:zipCode>
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            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>08/13/2024</saleDate>
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        <securitiesSoldInPast3Months>
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                    <ns2:zipCode>94086</ns2:zipCode>
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        <noticeSignature>
            <noticeDate>11/04/2024</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>09/08/2023</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Michael Xie</signature>
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144
0001475586
XXXXXXXX
LIVE
0001262039
Fortinet, Inc.
001-34511
909 Kifer Road
Sunnyvale
CA
94086
4082357700
MICHAEL XIE
Director
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
24712
1947305.60
764907985
11/04/2024
NASDAQ
Common
11/01/2024
Restricted Stock Units
Issuer
N
4712
11/01/2024
N/A
Common
12/31/2003
Founders Shares
Issuer
N
20000
12/31/2003
N/A
N
10b5-1 Sales for KEN QING XIE
909 Kifer Road
Sunnyvale
CA
94086
Common
10/16/2024
23307
1908675.49
10b5-1 Sales for KEN QING XIE
909 Kifer Road
Sunnyvale
CA
94086
Common
10/15/2024
23302
1925546.79
10b5-1 Sales for KEN QING XIE
909 Kifer Road
Sunnyvale
CA
94086
Common
09/18/2024
23538
1763843.57
10b5-1 Sales for KEN QING XIE
909 Kifer Road
Sunnyvale
CA
94086
Common
09/17/2024
23511
1780962.95
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
326 Galvez Street
Stanford
CA
94305
Common
08/23/2024
263000
19644416.80
10b5-1 Sales for KEN QING XIE
909 Kifer Road
Sunnyvale
CA
94086
Common
08/14/2024
23693
1731095.87
10b5-1 Sales for XIE FOUNDATION
909 Kifer Road
Sunnyvale
CA
94086
Common
08/13/2024
5000
355006.50
10b5-1 Sales for KEN QING XIE
909 Kifer Road
Sunnyvale
CA
94086
Common
08/13/2024
23739
1687021.53
11/04/2024
09/08/2023
/s/ Michael Xie