Onterris ONT Insider Ownership

NYSE ONT

$14.04 +0.22 (+1.59%)

At close: Oct 20, 2026 · 4:00 PM EDT

Insider Holdings by Owner

3.22Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

9.14%

■0% pp QoQ

Shares Held by Insiders

3.27Mn

filed for Sep 2026

■0.00% QoQ

Shares Outstanding

35.81Mn

35,806,000 shares

Direct Holdings

3.22Mn

Indirect: 52.26K

Net Shares Traded (QoQ)

no net change in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 5, 2026

Over the past 12 months, Onterris insiders bought $610,003 of stock on the open market (36.53K shares) and sold $7.96 million (300.16K shares).

Counted by insider, open-market buying of ONT stock in the past 12 months came from 2 insiders and selling from 4 insiders.
Among Onterris' insiders, Peter Graham (Director) was the largest open-market buyer over the past 12 months, purchasing $509,625 of stock (30K shares), most recently on June 5, 2026.
On the selling side, Vijay Manthripragada (President & CEO) was the top open-market seller of Onterris over the past 12 months, with $3.37 million sold (136.09K shares) and the latest sale on March 13, 2026.
Outside the open market, Onterris insiders received 125.86K shares in stock awards, acquired 400.35K shares through option exercises and conversions, gave up 259.92K shares to cover taxes or exercise prices and gave away 74.46K shares as gifts over the past 12 months.
Per Business Quant data, Onterris insiders hold 3.27Mn shares in total based on their latest Form 4 filings, or 9.14% of the 35.81Mn shares outstanding; that total is unchanged from 3.27Mn shares at the end of Q2 2026 and up 3.53% from 3.16Mn shares at the end of Q3 2025.
Indirect holdings, through trusts, partnerships, family members and other entities, make up 1.60% (52.26K shares) of Onterris' insider total, with the other 98.40% (3.22Mn shares) held directly.
ONT's insider total is spread across 13 insiders who have filed a Form 4 in the past two years.
ONT's largest insider holders by reported holdings are James K. Price (Director, 1.08Mn shares), Richard E. Perlman (Director, 618.62K shares) and Jose Revuelta (Chief Strategy Officer, 296.63K shares).
The holding of James K. Price makes up 32.84% of all shares held by Onterris insiders.
A total of 25 Form 4 filings with transactions in Onterris stock were made over the past 12 months, by 13 insiders.
The insider holdings and trades above for Onterris reflect Form 4 filings through June 8, 2026.

Form 4 Holdings

Insiders Holding ONT

Insiders 13

Shares held 3.22Mn

Of outstanding 9.00%

#	Insider	Position	Direct	Total	Share of Insiders	Last Filed
1	James K Price	Director	1,075,266	1,075,266	33.4%	05 Jan, 2026
2	Richard E Perlman	Director	618,616	618,616	19.2%	16 Mar, 2026
3	Jose Revuelta	Chief Strategy Officer	296,631	296,631	9.2%	12 May, 2026
4	Peter Graham	Director	256,689	256,689	8.0%	08 Jun, 2026
5	Vijay Manthripragada	President Ceo	236,788	236,788	7.3%	16 Mar, 2026
6	Allan Dicks	Chief Financial Officer	218,178	218,178	6.8%	12 May, 2026
7	Nasym Afsari	General Counsel And Secretary	204,878	204,878	6.4%	04 Mar, 2026
8	De Castro Jose Miguel Fernandez	Director	162,892	162,892	5.1%	05 Jan, 2026
9	J Thomas Presby	Director	62,614	62,614	1.9%	04 Mar, 2026
10	Robin Newmark	Director	29,989	29,989	0.9%	05 Jan, 2026
11	Janet Risi Field	Director	28,288	28,288	0.9%	05 Jan, 2026
12	James Laws	Chief Operating Officer	18,761	18,761	0.6%	13 Mar, 2026
13	Vincent Colman	Director	12,426	12,426	0.4%	05 Jan, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

386 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
05 Jun, 2026	Peter Graham	Director	Acquired P	25,140	$17.19	$432.16K	256,689	Direct
03 Jun, 2026	Peter Graham	Director	Acquired P	4,860	$15.94	$77.47K	231,549	Direct
11 May, 2026	Allan Dicks	Chief Financial Officer	Acquired P	6,535	$15.36	$100.38K	218,178	Direct
11 May, 2026	Jose Revuelta	Chief Strategy Officer	Acquired M	27,349	$6.03	$164.91K	296,631	Direct
11 May, 2026	Jose Revuelta	Chief Strategy Officer	Disposed M	27,349	$0.00	$0	0	Direct
13 Mar, 2026	Richard E Perlman	Director	Disposed G	74,461	$0.00	$0	618,616	Direct
13 Mar, 2026	Vijay Manthripragada	President Ceo	Acquired M	33,166	$6.03	$199.99K	196,917	Direct
13 Mar, 2026	Vijay Manthripragada	President Ceo	Acquired M	85,992	$6.03	$518.53K	282,909	Direct
13 Mar, 2026	Vijay Manthripragada	President Ceo	Disposed S	46,121	$25.41	$1.17Mn	236,788	Direct
13 Mar, 2026	Vijay Manthripragada	President Ceo	Disposed M	33,166	$0.00	$0	85,992	Direct
13 Mar, 2026	Vijay Manthripragada	President Ceo	Disposed M	85,992	$0.00	$0	0	Direct
11 Mar, 2026	James Laws	Chief Operating Officer	Acquired A	18,761	$0.00	$0	18,761	Direct
03 Mar, 2026	Jose Revuelta	Chief Strategy Officer	Acquired M	60,000	$6.03	$361.80K	329,828	Direct
09 Mar, 2026	Jose Revuelta	Chief Strategy Officer	Acquired M	7,858	$6.03	$47.38K	277,140	Direct
03 Mar, 2026	Jose Revuelta	Chief Strategy Officer	Disposed S	60,000	$28.00	$1.68Mn	269,282	Direct
09 Mar, 2026	Jose Revuelta	Chief Strategy Officer	Disposed S	7,858	$27.00	$212.17K	269,282	Direct
04 Mar, 2026	Jose Revuelta	Chief Strategy Officer	Acquired M	42,668	$6.03	$257.29K	311,950	Direct
09 Mar, 2026	Jose Revuelta	Chief Strategy Officer	Disposed M	7,858	$0.00	$0	27,349	Direct
04 Mar, 2026	Jose Revuelta	Chief Strategy Officer	Disposed S	42,668	$27.56	$1.18Mn	269,282	Direct
03 Mar, 2026	Jose Revuelta	Chief Strategy Officer	Disposed M	60,000	$0.00	$0	77,875	Direct

Showing 1 to 20 of 386 transactions