$TENB

$48.65 +$0.44 (0.91%) Close

$TENB Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 110.1M shares outstanding

Who owns TENB?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 58.6%

Ameriprise Financial Inc 13.8% · BlackRock, Inc. 12.3%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

310

+3 vs last qtr

Net shares bought

−3.2M

by institutions in Q2 2026

New / sold out

76 / 73

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Ameriprise Financial Inc +6.7M
Freestone Grove Partners LP +1.1M

Biggest sellers in Q2 2026

Mackenzie Financial Corp −2.3M
Jacobs Levy Equity Management, Inc SOLD OUT −1.8M

Who is planning to sell?

Notices of proposed sale, last 12 months

$2.91M

2 notices from 2 people

Shares covered

116.4K

0.11% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Seawell A Brooke Director $2.85M
Linda Zecher-Higgins Director $52.4K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2019–FY2025

+25.1%

+3.80% a year

Each share's claim on the business

−20.1%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$362M vs $802M

over 7 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years73% 3–5 years3% 1–3 years17% Under 1 year8%

Quarterly turnover

19.3%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting TENB on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
AF Ameriprise Financial Inc	15.2M	13.82%	+6.7M (+79.1%)	≤2021	0.1%
Shares held by quarter Peak holding15.2M (Q2'26) Change over 8 quarters+9.4M Share of the company13.820% Ameriprise Financial Inc's full portfolio →
B BlackRock, Inc.	13.5M	12.27%	+16.4K (+0.1%)	≤2021	0.0%
Shares held by quarter Peak holding13.5M (Q2'26) Change over 8 quarters+2.4M Share of the company12.270% BlackRock, Inc.'s full portfolio →

Ameriprise Financial Inc

15.2M

% of company

13.82%

Change vs last qtr

+6.7M (+79.1%)

Held since

≤2021

BlackRock, Inc.

13.5M

% of company

12.27%

Change vs last qtr

+16.4K (+0.1%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Tenable Holdings, Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting TENB on Form N-PORT; together they hold 52.8% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
CS Columbia Seligman Technology and Information Fund Columbia Funds Series Trust II	$251M	8.9M	8.06%	0.89%	May 31, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$129M	3.5M	3.18%	0.01%	June 30, 2026

Columbia Seligman Technology and Information Fund

Columbia Funds Series Trust II

Position value

$251M

% of company

8.06%

% of the fund

0.89%

As of

May 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$129M

% of company

3.18%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Tenable Holdings, Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
YA Yoran Amit Insider	672.0K	0.61%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.610% Yoran Amit's insider activity →
VS Vintz Stephen A Insider	624.8K	0.57%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.570% Vintz Stephen A's insider activity →

Yoran Amit

Insider

672.0K

% of company

0.61%

Change vs last qtr

—

Held since

—

Vintz Stephen A

Insider

624.8K

% of company

0.57%

Change vs last qtr

—

Held since

—

11 more holders behind a free account

See every insider and 5%+ holder of Tenable Holdings, Inc.

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