TOP TIERMARKET NEWSWIRE
Movers explained · 2026-09-16

Archived explainer. For the current picture see today's TENB page.

Why Is TENABLE HLDGS INC (TENB) Stock Down Today?

By the Top Tier Newswire AI Desk · September 16, 2026 at 12:54 PM ET · reviewed against 3 wire stories

TENABLE HLDGS INC (TENB) is down -5.29% in the latest session. Our newswire has captured 3 stories on TENB across 3 sources in the last 36 hours, with AI sentiment reading mixed (avg 47/100).

Public view, delayed 4h. Every headline, price and sentiment read below — and this write-up itself — reaches Pro subscribers live. Public readers see it once it clears the delay.

Tenable Holdings Inc (TENB) fell 5.29% to $36.08 in afternoon trade. The decline followed a recent downgrade in coverage and a series of insider sales. The stock opened higher but drifted lower throughout the session, closing near its intraday low.

What Happened

Tenable Holdings announced the completion of a convertible notes offering and buybacks, as reported by TipRanks. The same day, a Seeking Alpha article highlighted a downgrade in the stock's rating, citing better fundamentals but a tougher entry point. An 8-K filing with the SEC detailed the company's entry into and termination of material agreements, as well as the creation of a direct financial obligation. These disclosures may have raised uncertainty among investors. The stock opened at $38.13 but failed to maintain its early strength, reaching a high of $38.76 before declining to a session low of $36.05. Volume was 1.6 million shares, which is 0.4 times the 3-month daily average.

What The Data Shows

Tenable's fundamentals include a market cap of $3.9 billion and a P/E ratio of 658.2. Despite revenue growth of 9.9% trailing twelve months, the company's net margin remains at just 0.6%. The stock has traded between $15.72 and $43.67 over the past 52 weeks. Recent insider transactions show three sales totaling $207,000, with no insider buys in the past 90 days. Congressional trades also show only sales, with Rep. Ro Khanna selling between $1,001 and $15,000 on three occasions in July 2026. The stock has risen 11.7% over the past eight sessions but is now near a 52-week low after printing nine fresh 52-week lows on September 16.

What To Watch

Tenable Holdings has no scheduled earnings report in the near term. Investors should monitor the breadth of coverage and any follow-up analyst commentary as the stock continues to trade near the lower end of its 52-week range.

AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Public view is delayed 4 hours from real time. Not financial advice.

TENB by the numbers

Last: $36.08Session: -5.29%7 sessions: +6.87%Coverage: 3 stories / 3 sourcesAI sentiment: 47/100 (mixed)Mkt cap: $3.9BP/E: 658.252w: $15.72 to $43.67
TENB · today's session (5-min) · -4.83% vs prior close · updated 6:09 PM ET
$35.88$37.16$38.44prev close $38.09$36.257:00 AM9:41 AM12:22 PM3:03 PM5:45 PM7:00 AM · $38.307:30 AM · $37.957:35 AM · $37.907:40 AM · $37.888:00 AM · $37.908:20 AM · $37.558:35 AM · $37.498:55 AM · $37.899:05 AM · $37.859:10 AM · $37.229:25 AM · $36.809:30 AM · $37.409:35 AM · $37.629:40 AM · $37.939:45 AM · $37.719:50 AM · $37.309:55 AM · $37.3310:00 AM · $37.2510:05 AM · $36.9510:10 AM · $36.8710:15 AM · $37.0610:20 AM · $36.9310:25 AM · $36.7010:30 AM · $36.7710:35 AM · $36.7910:40 AM · $36.7710:45 AM · $36.7410:50 AM · $36.6610:55 AM · $36.5811:00 AM · $36.6211:05 AM · $36.5811:10 AM · $36.6411:15 AM · $36.6711:20 AM · $36.5911:25 AM · $36.8011:30 AM · $36.5811:35 AM · $36.5711:40 AM · $36.4811:45 AM · $36.4511:50 AM · $36.3211:55 AM · $36.2712:00 PM · $36.4212:05 PM · $36.2412:10 PM · $36.1312:15 PM · $36.1512:20 PM · $36.1512:25 PM · $36.2012:30 PM · $36.3312:35 PM · $36.3712:40 PM · $36.2312:45 PM · $36.2512:50 PM · $36.0512:55 PM · $36.021:00 PM · $36.161:05 PM · $36.191:10 PM · $36.151:15 PM · $36.301:20 PM · $36.411:25 PM · $36.511:30 PM · $36.691:35 PM · $36.541:40 PM · $36.601:45 PM · $36.561:50 PM · $36.551:55 PM · $36.552:00 PM · $36.722:05 PM · $36.712:10 PM · $36.702:15 PM · $36.512:20 PM · $36.382:25 PM · $36.552:30 PM · $36.602:35 PM · $36.692:40 PM · $36.752:45 PM · $36.752:50 PM · $36.692:55 PM · $36.533:00 PM · $36.593:05 PM · $36.533:10 PM · $36.333:15 PM · $36.053:20 PM · $36.123:25 PM · $36.173:30 PM · $36.353:35 PM · $36.413:40 PM · $36.583:45 PM · $36.593:50 PM · $36.173:55 PM · $36.394:00 PM · $36.394:05 PM · $36.374:20 PM · $36.374:25 PM · $36.204:35 PM · $36.374:40 PM · $36.375:05 PM · $36.355:20 PM · $36.385:45 PM · $36.25
AI sentiment, last 36h · averaged over 3 stories · 47/100 neutral
AI sentiment 47/100 (neutral)0 · bearish50bullish · 100

The headlines behind the move

Story flow · 3 stories on the wire, last 36h · hover or tap a dot for the headline
36h ago24h ago12h agopublishSEC 8-K · sentiment 50 · Tenable Holdings, Inc. (TENB) files 8-KSEC 8-K · 50Tenable Holdings, Inc. (TENB) files 8-KTipRanks · sentiment 48 · Tenable Holdings Completes Convertible Notes Offering and BuybacksTipRanks · 48Tenable Holdings Completes Convertible Notes Offering and BuybacksSeeking Alpha · sentiment 42 · Tenable: Better Fundamentals, Tougher Entry Point (Rating Downgrade)Seeking Alpha · 42Tenable: Better Fundamentals, Tougher Entry Point (Rating Downgrade)
6h agoSeeking AlphaBEARISH 42Analyst

Tenable: Better Fundamentals, Tougher Entry Point (Rating Downgrade)

Tenable Holdings specializes in vulnerability and exposure management for 44,000 organizations, including 65% of the Fortune 500. Click for more on TENB stock.

1d agoTipRanksNEUTRAL 48General

Tenable Holdings Completes Convertible Notes Offering and Buybacks

1d agoSEC 8-KNEUTRAL 50General

Tenable Holdings, Inc. (TENB) files 8-K

Filed: 2026-09-15 AccNo: 0001660280-26-000039 Size: 52 MB Item 1.01: Entry into a Material Definitive Agreement Item 1.02: Termination of a Material Definitive Agreement Item 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant Item 3.02: Unregistered Sales of Equity Securities Item 8.01: Other Events Item 9.01: Financial Statements and Exhibits

Want the next move before the crowd? The live terminal streams every headline in real time with watchlist alerts, AI sentiment, and the full data stack behind this page.Get Pro Access →

More on TENB: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.

Earlier TENB move explainers: 2026-09-16 · 2026-09-11 · 2026-09-01 · 2026-08-28 · 2026-08-27