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        <com:stateOrCountry>MD</com:stateOrCountry>
        <com:zipCode>21044</com:zipCode>
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      <issuerContactPhone>410-872-0555</issuerContactPhone>
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          <com:city>Smithfield</com:city>
          <com:stateOrCountry>RI</com:stateOrCountry>
          <com:zipCode>02917</com:zipCode>
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      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
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          <com:zipCode>21044</com:zipCode>
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      <grossProceeds>108821.64</grossProceeds>
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      <grossProceeds>108794.72</grossProceeds>
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          <com:zipCode>21044</com:zipCode>
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      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>05/04/2023</saleDate>
      <amountOfSecuritiesSold>6245</amountOfSecuritiesSold>
      <grossProceeds>219669.75</grossProceeds>
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          <com:zipCode>21044</com:zipCode>
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      <grossProceeds>84323.13</grossProceeds>
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    <noticeSignature>
      <noticeDate>05/24/2023</noticeDate>
      <signature>/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Mark C. Thurmond</signature>
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144
0001651579
XXXXXXXX
LIVE
0001660280
Tenable Holdings, Inc.
001-38600
6100 MERRIWEATHER DRIVE
COLUMBIA
MD
21044
410-872-0555
Thurmond Mark C.
Officer
Common
Fidelity Brokerage Services LLC
900 Salem St
Smithfield
RI
02917
2516
94450.38
114833241
05/24/2023
NASDAQ
Common
05/23/2023
Restricted Stock Vesting
Issuer
N
2516
05/23/2023
Compensation
N
Mark C. Thurmond
6100 Merriweather Drive
Columbia
MD
21044
Common
02/24/2023
4204
180675.31
Mark C. Thurmond
6100 Merriweather Drive
Columbia
MD
21044
Common
02/27/2023
2472
108821.64
Mark C. Thurmond
6100 Merriweather Drive,
Columbia
MD
21044
Common
02/28/2023
2464
108794.72
Mark C. Thurmond
6100 Merriweather Drive
Columbia
MD
21044
Common
05/04/2023
6245
219669.75
Mark C. Thurmond
6100 Merriweather Drive
Columbia
MD
21044
Common
05/18/2023
2203
84323.13
05/24/2023
/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Mark C. Thurmond