TENB
TENABLE HLDGS (TENB)
NASDAQ
$34.47+$0.09 (+0.27%)
Price as of Aug 21, 2026 7:54 PM EDT
  • $3.8B
    Market Cap
  • 12.06%
    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
AMERIPRISE FINANCIAL INC
13.81%
15.2M
+6.7M (+44.18%)
Jun 30, 2026
BLACKROCK, INC.
12.25%
13.5M
+16,358 (+0.12%)
Jun 30, 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
9.28%
10.2M
+603,124 (+5.89%)
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
9.28%
10.2M
+603,124 (+5.89%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions2.0B (76.82%)
  • Mutual Funds604.4M (23.05%)
  • Insiders3.5M (0.13%)
  • Other0 (0.00%)

Insider Transactions

  • 0.13% (3.5M)
    Current InsiderOwnership (%, shares)
  • 2
    Number of InsiderBuying (last 12 months)
  • $1.1M
    Amount of InsiderBuying (last 12 months)
  • 6
    Number of InsiderSelling (last 12 months)
  • $34.7M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Zecher Linda Kay
Sell
Aug 19, 2026
$24,674.40
690
$35.76
7,012
Zecher Linda Kay
Sell
Aug 18, 2026
$24,822.00
700
$35.46
7,702
Zecher Linda Kay
Sell
Aug 07, 2026
$20,075.00
550
$36.50
8,402
Vicks Raymond Jr.
Sell
Aug 07, 2026
$65,374.86
1,819
$35.94
20,509
Zecher Linda Kay
Sell
Aug 04, 2026
$21,600.00
600
$36.00
8,952
Zecher Linda Kay
Sell
Aug 03, 2026
$49,980.00
1,470
$34.00
9,552
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