TENB · Insider trading · 13F holders · Congress trades
Tenable Holdings, Inc. (TENB)
Who is buying and selling TENB: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 11
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $207K
- Congress trades, 12 months
- 0
TENB at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 2 TENB insiders filed 3 sales worth $207K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
- 11 13F filers hold TENB among their 50 largest positions, worth $257.5M combined. The biggest bets by portfolio weight are Shapiro Capital Management LLC (6.4%), Firetrail Investments Pty Ltd (2.4%) and Graphene Investments SAS (2.0%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
- No member of Congress has disclosed a trade in TENB.
- TENB last closed at $51.78 on Oct 29, 2026.
TENB insider trading
Between Aug 1, 2026 and Oct 29, 2026, 2 TENB insiders filed 3 sales worth $207K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 20, 2026 | Zecher Linda Kay | Director | Sale | 1,390 | $35.61 | $49K | SEC |
| Aug 11, 2026 | Zecher Linda Kay | Director | Sale | 2,620 | $34.98 | $92K | SEC |
| Aug 11, 2026 | Vicks Raymond Jr. | Director | Sale10b5-1 | 1,819 | $35.94 | $65K | SEC |
Who owns TENB? Hedge funds and superinvestors
11 13F filers hold TENB among their 50 largest positions, worth $257.5M combined. The biggest bets by portfolio weight are Shapiro Capital Management LLC (6.4%), Firetrail Investments Pty Ltd (2.4%) and Graphene Investments SAS (2.0%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Penserra Capital Management LLCMutual fund manager | 0.8% | $108.9M | 2,952,670 | -12.9% shares | Q2 2026 |
| Shapiro Capital Management LLCInstitutional asset manager | 6.4% | $106.3M | 2,883,052 | -30.5% shares | Q2 2026 |
| Delta Global Management LPHedge fund | 1.3% | $11.8M | 320,500 | — | Q2 2026 |
| Firetrail Investments Pty LtdAsset manager | 2.4% | $8.4M | 228,861 | -2.5% shares | Q2 2026 |
| Concentric Capital Strategies, LPAsset manager | 0.5% | $7.9M | 214,009 | — | Q2 2026 |
| Graphene Investments SASAsset manager | 2.0% | $3.7M | 101,700 | +12.7% shares | Q3 2026 |
| S Squared Technology, LLCHedge fund | 1.0% | $3.3M | 90,000 | New | Q2 2026 |
| Bullseye Asset Management LLCInstitutional asset manager | 1.5% | $3.0M | 81,326 | — | Q2 2026 |
| Jackson Creek Investment Advisors LLCMutual fund manager | 0.6% | $1.8M | 55,119 | — | Q2 2026 |
| Scientech Research LLCHedge fund | 1.0% | $1.3M | 34,084 | — | Q2 2026 |
| Hanseatic Management Services IncWealth manager | 0.9% | $1.1M | 30,101 | — | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 2, Q2 2026: 9). Screen TENB in the grand portfolio →
TENB stock trades by members of Congress
No member of Congress has disclosed a trade in TENB.
TENB questions and answers
Are insiders buying TENB stock?
Between Aug 1, 2026 and Oct 29, 2026, 2 TENB insiders filed 3 sales worth $207K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own TENB?
11 13F filers hold TENB among their 50 largest positions, worth $257.5M combined. The biggest bets by portfolio weight are Shapiro Capital Management LLC (6.4%), Firetrail Investments Pty Ltd (2.4%) and Graphene Investments SAS (2.0%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
Has Congress traded TENB?
No member of Congress has disclosed a trade in TENB.
Who is the largest holder of TENB?
Among 13F filers, Penserra Capital Management LLC reports the largest TENB position, $108.9M (2,952,670 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Shapiro Capital Management LLC's: 6.4% of its portfolio.
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