Tenable Holdings, Inc.
US ˙ NasdaqGS ˙ US88025T1025

SecurityTENB / Tenable Holdings, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership3,085,130 shares
Latest Disclosed Value $ 52,184,974
State Street Corp reports 2.28% increase in ownership of TENB / Tenable Holdings, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 3,085,130 shares of Tenable Holdings, Inc. (US:TENB) valued at $52,184,974 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,016,363 shares of Tenable Holdings, Inc.. This represents a change in shares of 2.28% during the quarter. The current value of the position is $90,363,458 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F TENABLE HLDGS COM 88025T102 3,085,130 68,767 2.28 52,185 -26.48 0.0018
2026-02-13 2025-12-31 13F TENABLE HLDGS COM 88025T102 3,016,363 -37,329 -1.22 70,975 -20.29 0.0024
2025-11-14 2025-09-30 13F TENABLE HLDGS COM 88025T102 3,053,692 -2,363 -0.08 89,046 -13.74 0.0031
2025-08-14 2025-06-30 13F TENABLE HLDGS COM 88025T102 3,056,055 43,098 1.43 103,234 -2.05 0.0039
2025-05-15 2025-03-31 13F TENABLE HLDGS COM 88025T102 3,012,957 -22,206 -0.73 105,393 -11.82 0.0043
2025-02-14 2024-12-31 13F TENABLE HLDGS COM 88025T102 3,035,163 121,583 4.17 119,525 1.24 0.0047
2024-11-14 2024-09-30 13F TENABLE HLDGS COM 88025T102 2,913,580 73,293 2.58 118,058 -4.62 0.0048
2024-08-14 2024-06-30 13F TENABLE HLDGS COM 88025T102 2,840,287 36,675 1.31 123,780 -10.68 0.0054
2024-05-15 2024-03-31 13F TENABLE HLDGS COM 88025T102 2,803,612 74,402 2.73 138,583 10.24 0.0062
2024-02-14 2023-12-31 13F TENABLE HLDGS COM 88025T102 2,729,210 188,800 7.43 125,707 10.45 0.0061
2023-11-14 2023-09-30 13F TENABLE HLDGS COM 88025T102 2,540,410 37,103 1.48 113,810 4.39 0.0063
2023-08-14 2023-06-30 13F TENABLE HLDGS COM 88025T102 2,503,307 92,160 3.82 109,019 -4.83 0.0057
2023-05-15 2023-03-31 13F TENABLE HLDGS COM 88025T102 2,411,147 98,158 4.24 114,554 29.82 0.0065
2023-05-15 2022-12-31 13F/A-99 TENABLE HLDGS COM 88025T102 2,312,989 -2,023 -0.09 88,241 9.53 0.0052
2023-05-15 2022-12-31 13F TENABLE HLDGS COM 88025T102 2,312,989 -2,023 88,241 0.0052
2022-11-15 2022-09-30 13F TENABLE HLDGS COM 88025T102 2,315,012 127,183 5.81 80,562 -18.91 0.0051
2022-08-15 2022-06-30 13F TENABLE HLDGS COM 88025T102 2,187,829 215,108 10.90 99,349 -12.85 0.0060
2022-05-16 2022-03-31 13F TENABLE HLDGS COM 88025T102 1,972,721 39,030 2.02 114,004 7.06 0.0056
2022-02-14 2021-12-31 13F TENABLE HLDGS COM 88025T102 1,933,691 -30,017 -1.53 106,488 17.53 0.0051
2021-11-15 2021-09-30 13F TENABLE HLDGS COM 88025T102 1,963,708 94,338 5.05 90,605 17.22 0.0048
2021-08-16 2021-06-30 13F TENABLE HLDGS COM 88025T102 1,869,370 373,408 24.96 77,298 42.80 0.0041
2021-07-09 2021-03-31 13F/A-1 TENABLE HLDGS COM 88025T102 1,495,962 -23,167 -1.53 54,131 -31.82 0.0031
2021-05-17 2021-03-31 13F TENABLE HLDGS COM 88025T102 1,495,962 -23,167 54,131 0.0031
2021-02-16 2020-12-31 13F TENABLE HLDGS COM 88025T102 1,519,129 113,281 8.06 79,390 49.59 0.0049
2020-11-10 2020-09-30 13F TENABLE HLDGS COM 88025T102 1,405,848 144,919 11.49 53,071 41.19 0.0036
2020-08-14 2020-06-30 13F TENABLE HLDGS COM 88025T102 1,260,929 401,154 46.66 37,588 99.99 0.0027
2020-06-19 2020-03-31 13F/A-1 TENABLE HLDGS COM 88025T102 859,775 25,443 3.05 18,795 -5.98 0.0016
2020-05-11 2020-03-31 13F TENABLE HLDGS COM 88025T102 859,775 25,443 18,795 1,650.5794
2020-02-06 2019-12-31 13F TENABLE HLDGS COM 88025T102 834,332 132,192 18.83 19,991 27.22 0.0014
2019-11-14 2019-09-30 13F TENABLE HLDGS COM 88025T102 702,140 3,805 0.54 15,714 -21.15 0.0012
2019-08-14 2019-06-30 13F TENABLE HLDGS COM 88025T102 698,335 204,525 41.42 19,930 27.48 0.0015
2019-05-15 2019-03-31 13F TENABLE HLDGS COM 88025T102 493,810 275,470 126.17 15,634 222.68 0.0012
2019-02-12 2018-12-31 13F TENABLE HLDGS COM 88025T102 218,340 52,768 31.87 4,845 -24.74 0.0004
2018-11-09 2018-09-30 13F TENABLE HOLDINGS Common Stock 88025T102 165,572 165,572 6,438 0.0005
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.