$ONT

$14.34 -$0.53 (3.56%) Close

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

Ownership

13F as of Q2 2026 · 35.1M shares outstanding

Who owns ONT?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 51.5%

BlackRock, Inc. 9.3% · Bamco Inc /ny/ 6.1%

Institutional ownership

100.0%

+3.6 pts vs last qtr

Institutional holders

156

-15 vs last qtr

Net shares bought

+3.8M

by institutions in Q2 2026

New / sold out

26 / 41

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Corvex Management LP NEW +1.8M
Nomura Holdings Inc NEW +1.2M

Biggest sellers in Q2 2026

Janus Henderson Group PLC SOLD OUT −867.0K
Algert Global LLC −540.6K

Who is planning to sell?

Notices of proposed sale, last 12 months

$8.04M

9 notices from 4 people

Shares covered

300.2K

0.85% of the company

Arranged in advance

43%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Manthripragada Vijay Officer 10b5-1 $3.44M
Revuelta Jose Officer $3.07M

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, FY2020–FY2025

+113.1%

+16.34% a year

Each share's claim on the business

−53.1%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $213M

over 6 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+ years59% 3–5 years4% 1–3 years8% Under 1 year28%

Quarterly turnover

20.8%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ONT on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	3.3M	9.33%	+124.1K (+3.9%)	≤2021	0.0%
Shares held by quarter Peak holding3.3M (Q2'26) Change over 8 quarters+659.7K Share of the company9.330% BlackRock, Inc.'s full portfolio →
B/ Bamco Inc /ny/	2.1M	6.09%	−30.8K (−1.4%)	≤2021	0.1%
Shares held by quarter Peak holding2.8M (Q2'25) Change over 8 quarters+894.8K Share of the company6.090% Bamco Inc /ny/'s full portfolio →

BlackRock, Inc.

3.3M

% of company

9.33%

Change vs last qtr

+124.1K (+3.9%)

Held since

≤2021

Bamco Inc /ny/

2.1M

% of company

6.09%

Change vs last qtr

−30.8K (−1.4%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting ONT on Form N-PORT; together they hold 46.6% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
BD Baron Discovery Fund BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)	$28.7M	1.4M	4.04%	1.57%	June 30, 2026
FV Fidelity Value Fund Fidelity Capital Trust	$26.6M	1.3M	3.61%	0.25%	July 31, 2026

Baron Discovery Fund

BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND)

Position value

$28.7M

% of company

4.04%

% of the fund

1.57%

As of

June 30, 2026

Fidelity Value Fund

Fidelity Capital Trust

Position value

$26.6M

% of company

3.61%

% of the fund

0.25%

As of

July 31, 2026

23 more funds behind a free account

See every fund holding Onterris, 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
PJ Price James K Insider	1.1M	3.06%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company3.060% Price James K's insider activity →
PR Perlman Richard E Insider	618.6K	1.76%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.760% Perlman Richard E's insider activity →

Price James K

Insider

1.1M

% of company

3.06%

Change vs last qtr

—

Held since

—

Perlman Richard E

Insider

618.6K

% of company

1.76%

Change vs last qtr

—

Held since

—

11 more holders behind a free account

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

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