InsiderSource
TENB

Tenable Holdings, Inc.

SEC CIK 1660280
$26.80 +35.9% · 90 days
90-day buys
$258.5K
1 open-market
90-day sells
$0
0 open-market
Net insider flow
+$258.5K
Net buying
Filings shown
165
Most recent
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At a glance

Over the last 90 days, insiders at TENB have bought a net $258.5K of stock (1 open-market buy vs 0 sells).

Largest recent trade: Vintz Stephen A sold $7M of TENB, trimming their stake 33%.

Most active filer: Thurmond Mark C., with 65 transactions among the recent filings shown.

Insider transaction history

Form 4 filings for TENB, newest first
View on SEC EDGAR ↗
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Feb 27, 2024 ΔOwn −14%

Thurmond Mark C. sold $339.3K of TENB, trimming their stake 14%.

−$339.3K
7,110 sh @ $48
TENB
Tenable Holdings, Inc.
Sell Vintz Stephen A · Chief Financial Officer · Open-market sale · filed Feb 27, 2024 ΔOwn −0.9%

Vintz Stephen A sold $113.5K of TENB, trimming their stake 1%.

−$113.5K
2,382 sh @ $48
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Feb 27, 2024 ΔOwn −3.4%

Thurmond Mark C. sold $80.3K of TENB, trimming their stake 3%.

−$80.3K
1,684 sh @ $48
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Feb 22, 2024 ΔOwn −2.2%

Thurmond Mark C. sold $52K of TENB, trimming their stake 2%.

−$52K
1,089 sh @ $48
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Feb 22, 2024 ΔOwn −4.5%

Thurmond Mark C. sold $67K of TENB, trimming their stake 5%.

−$67K
1,450 sh @ $46
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TENB
Tenable Holdings, Inc.
Sell Vintz Stephen A · Chief Financial Officer · Open-market sale · filed Feb 22, 2024 ΔOwn −2.1%

Vintz Stephen A sold $241.1K of TENB, trimming their stake 2%.

−$241.1K
5,216 sh @ $46
TENB
Tenable Holdings, Inc.
Sell Zecher Linda Kay · Director · Open-market sale · filed Feb 9, 2024 ΔOwn −100%

Zecher Linda Kay sold $132K of TENB, trimming their stake 100%.

−$132K
2,600 sh @ $51
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Feb 9, 2024 ΔOwn −49%

Thurmond Mark C. sold $1.35M of TENB, trimming their stake 49%.

−$1.35M
26,175 sh @ $51
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Feb 7, 2024 ΔOwn −6.9%

Thurmond Mark C. sold $188.2K of TENB, trimming their stake 7%.

−$188.2K
3,976 sh @ $47
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Nov 30, 2023 ΔOwn −2.1%

Thurmond Mark C. sold $40K of TENB, trimming their stake 2%.

−$40K
951 sh @ $42
TENB
Tenable Holdings, Inc.
Sell Vintz Stephen A · Chief Financial Officer · Open-market sale · filed Nov 27, 2023 ΔOwn −1.5%

Vintz Stephen A sold $136.5K of TENB, trimming their stake 1%.

−$136.5K
3,411 sh @ $40
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Nov 27, 2023 ΔOwn −5.2%

Thurmond Mark C. sold $100.1K of TENB, trimming their stake 5%.

−$100.1K
2,501 sh @ $40
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Nov 27, 2023 ΔOwn −1.9%

Thurmond Mark C. sold $33.1K of TENB, trimming their stake 2%.

−$33.1K
827 sh @ $40
TENB
Tenable Holdings, Inc.
Sell Vintz Stephen A · Chief Financial Officer · Open-market sale · filed Nov 21, 2023 ΔOwn −1.8%

Vintz Stephen A sold $166.9K of TENB, trimming their stake 2%.

−$166.9K
4,230 sh @ $39
TENB
Tenable Holdings, Inc.
Sell Vintz Stephen A · Chief Financial Officer · Open-market sale · filed Nov 21, 2023 ΔOwn −1.2%

Vintz Stephen A sold $110.5K of TENB, trimming their stake 1%.

−$110.5K
2,787 sh @ $40
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Nov 21, 2023 ΔOwn −4.8%

Thurmond Mark C. sold $87.1K of TENB, trimming their stake 5%.

−$87.1K
2,197 sh @ $40
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Nov 21, 2023 ΔOwn −5.4%

Thurmond Mark C. sold $94.3K of TENB, trimming their stake 5%.

−$94.3K
2,357 sh @ $40
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Nov 7, 2023 ΔOwn −13%

Thurmond Mark C. sold $235.2K of TENB, trimming their stake 13%.

−$235.2K
6,368 sh @ $37
TENB
Tenable Holdings, Inc.
Sell Zecher Linda Kay · Director · Open-market sale · filed Nov 7, 2023 ΔOwn −36%

Zecher Linda Kay sold $53.7K of TENB, trimming their stake 36%.

−$53.7K
1,444 sh @ $37
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Aug 29, 2023 ΔOwn −2.4%

Thurmond Mark C. sold $39.4K of TENB, trimming their stake 2%.

−$39.4K
921 sh @ $43
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Aug 24, 2023 ΔOwn −6.4%

Thurmond Mark C. sold $112.2K of TENB, trimming their stake 6%.

−$112.2K
2,584 sh @ $43
TENB
Tenable Holdings, Inc.
Sell Vintz Stephen A · Chief Financial Officer · Open-market sale · filed Aug 24, 2023 ΔOwn −1.6%

Vintz Stephen A sold $153.1K of TENB, trimming their stake 2%.

−$153.1K
3,525 sh @ $43
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Aug 24, 2023 ΔOwn −26%

Thurmond Mark C. sold $566.2K of TENB, trimming their stake 26%.

−$566.2K
12,531 sh @ $45
TENB
Tenable Holdings, Inc.
Sell Vintz Stephen A · Chief Financial Officer · Open-market sale · filed Aug 24, 2023 ΔOwn −1.9%

Vintz Stephen A sold $190.3K of TENB, trimming their stake 2%.

−$190.3K
4,226 sh @ $45
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Aug 21, 2023 ΔOwn −4.4%

Thurmond Mark C. sold $97.5K of TENB, trimming their stake 4%.

−$97.5K
2,195 sh @ $44
TENB
Tenable Holdings, Inc.
Sell Vintz Stephen A · Chief Financial Officer · Open-market sale · filed Aug 21, 2023 ΔOwn −1.3%

Vintz Stephen A sold $123.7K of TENB, trimming their stake 1%.

−$123.7K
2,784 sh @ $44
TENB
Tenable Holdings, Inc.
Sell Thurmond Mark C. · Chief Operating Officer · Open-market sale · filed Aug 7, 2023 ΔOwn −12%

Thurmond Mark C. sold $301.2K of TENB, trimming their stake 12%.

−$301.2K
6,396 sh @ $47
TENB
Tenable Holdings, Inc.
Sell Zecher Linda Kay · Director · Open-market sale · filed Jun 7, 2023 ΔOwn −39%

Zecher Linda Kay sold $105.5K of TENB, trimming their stake 39%.

−$105.5K
2,600 sh @ $41
TENB
Tenable Holdings, Inc.
Sell Vintz Stephen A · Chief Financial Officer · Open-market sale · filed May 25, 2023 ΔOwn −1.6%

Vintz Stephen A sold $128.8K of TENB, trimming their stake 2%.

−$128.8K
3,432 sh @ $38
TENB
Tenable Holdings, Inc.
Sell Vintz Stephen A · Chief Financial Officer · Open-market sale · filed May 23, 2023 ΔOwn −2.0%

Vintz Stephen A sold $168.2K of TENB, trimming their stake 2%.

−$168.2K
4,173 sh @ $40
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About TENB insider activity

This page tracks every recent Form 4 filed for Tenable Holdings, Inc. with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.

The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.

Frequently asked questions

How often is TENB insider data updated?

Continuously. We read from SEC EDGAR, so new Form 4 filings for Tenable Holdings, Inc. usually appear here within minutes of being accepted by the SEC.

What does "net insider flow" mean?

It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.

Why do some rows show grants or option exercises instead of buys?

Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.

Is this investment advice?

No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.