TENB
TENABLE HLDGS (TENB)
NASDAQ
$27.26+$0.92 (+3.49%)
Price as of Jun 23, 2026 4:29 PM EDT
  • $2.9B
    Market Cap
  • -21.30%
    1-Year Change
  • Software - Infrastructure
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
13.99%
15.4M
+465,039 (+3.01%)
Dec 31, 2025
BLACKROCK, INC.
12.24%
13.5M
+700,629 (+5.19%)
Mar 31, 2026
BLACKROCK FUNDING, INC. /DE
10.81%
11.9M
+829,503 (+6.96%)
Dec 31, 2024
BLACKROCK INC.
9.63%
10.6M
+230,170 (+2.17%)
Jun 30, 2024
N/A
8.74%
9.6M
+9.6M (+100.00%)
Mar 31, 2026
AMERIPRISE FINANCIAL INC
7.71%
8.5M
+1.9M (+22.80%)
Mar 31, 2026
SHAPIRO CAPITAL MANAGEMENT LLC
3.76%
4.2M
+1.3M (+30.32%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions1.9B (76.93%)
  • Mutual Funds563.5M (22.95%)
  • Insiders3.1M (0.12%)
  • Other0 (0.00%)

Insider Transactions

  • 0.12% (3.1M)
    Current InsiderOwnership (%, shares)
  • 2
    Number of InsiderBuying (last 12 months)
  • $1.1M
    Amount of InsiderBuying (last 12 months)
  • 4
    Number of InsiderSelling (last 12 months)
  • $34.6M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Anschutz Barron
Award
Feb 26, 2026
$0.00
92,879
$0.00
92,879
Thurmond Mark C.
Co-Chief Executive Officer
Award
Feb 26, 2026
$0.00
341,847
$0.00
341,847
Brown Matthew Charles
Chief Financial Officer
Award
Feb 26, 2026
$0.00
141,898
$0.00
141,898
Vintz Stephen A
Co-Chief Executive Officer
Award
Feb 26, 2026
$0.00
341,847
$0.00
341,847
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 25, 2026
$0.00
24,381
$0.00
180,056
Vintz Stephen A
Co-Chief Executive Officer
Exempt
Feb 25, 2026
$0.00
24,381
$0.00
440,298
Thurmond Mark C.
Co-Chief Executive Officer
In Kind
Feb 25, 2026
$223,991.00
11,789
$19.00
168,267
Vintz Stephen A
Co-Chief Executive Officer
In Kind
Feb 25, 2026
$221,673.00
11,667
$19.00
428,631
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 25, 2026
$0.00
24,381
$0.00
73,147
Vintz Stephen A
Co-Chief Executive Officer
Exempt
Feb 25, 2026
$0.00
24,381
$0.00
73,147
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
1,365
$0.00
0
Vintz Stephen A
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
1,882
$0.00
0
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
1,162
$0.00
4,654
Anschutz Barron
Exempt
Feb 23, 2026
$0.00
1,390
$0.00
0
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
2,267
$0.00
18,140
Vintz Stephen A
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
1,594
$0.00
6,385
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
3,857
$0.00
0
Anschutz Barron
Exempt
Feb 23, 2026
$0.00
1,337
$0.00
5,348
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
3,713
$0.00
14,852
Vintz Stephen A
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
2,345
$0.00
18,767
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
46,586
$0.00
93,172
Anschutz Barron
Exempt
Feb 23, 2026
$0.00
1,258
$0.00
10,064
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
4,368
$0.00
34,944
Vintz Stephen A
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
5,316
$0.00
0
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
1,365
$0.00
115,004
Anschutz Barron
Exempt
Feb 23, 2026
$0.00
6,515
$0.00
19,547
Thurmond Mark C.
Co-Chief Executive Officer
In Kind
Feb 23, 2026
$7,037.55
401
$17.55
114,603
Vintz Stephen A
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
5,095
$0.00
20,381
Thurmond Mark C.
Co-Chief Executive Officer
Exempt
Feb 23, 2026
$0.00
1,162
$0.00
115,765
Anschutz Barron
Exempt
Feb 23, 2026
$0.00
1,390
$0.00
65,838