Enpro NPO Insider Ownership

NYSE NPO

$294.33 +4.79 (+1.65%)

As of: Oct 21, 2026 · 3:59 PM EDT

Insider Holdings by Owner

186.44K Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

0.843%

▲+0.0016% pp QoQ

Shares Held by Insiders

178.43K

filed for Sep 2026

▲+0.19% QoQ

Shares Outstanding

21.17Mn

21,167,681 shares

Direct Holdings

167.60K

Indirect: 10.83K

Net Shares Traded (QoQ)

+335

net buying 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 10, 2026

Across the past 12 months, open-market trades by Enpro insiders were all sales, totaling $3.17 million (11.93K shares).

By number of insiders, Enpro saw 5 insiders sell on the open market over the past 12 months and none buy.
Felix M. Brueck (Director) sold the most Enpro stock on the open market over the past 12 months, $1.61 million (5.85K shares), most recently on February 23, 2026.
Enpro's latest insider trade on the open market was a sale of 507 shares for $134,430 by Steven R. Bower (SVP, Controller and CAO) on March 2, 2026.
Beyond open-market trades, insiders at Enpro received 18.55K shares in stock awards, acquired 17K shares through option exercises and conversions, gave up 13.53K shares to cover taxes or exercise prices and gave away 442 shares as gifts in the last 12 months.
Per Business Quant data, Enpro insiders hold 178.43K shares in total based on their latest Form 4 filings, or 0.84% of the 21.17Mn shares outstanding; that total is up 0.19% from 178.1K shares at the end of Q2 2026 and up 7.89% from 165.39K shares at the end of Q3 2025.
Indirect holdings, through trusts, partnerships, family members and other entities, make up 6.07% (10.83K shares) of Enpro's insider total, with the other 93.93% (167.6K shares) held directly.
Business Quant counts 15 insiders with holdings in Enpro stock, among the officers, directors and 10% owners who have filed a Form 4 in the past two years.
NPO's three largest insider shareholders, per their latest Form 4 filings, are Eric A. Vaillancourt (President and CEO, 51.27K shares), John M. Childress II (EVP & CFO, 38.62K shares) and Robert Savage McLean (EVP, GC, and CAO, 29.91K shares).
Eric A. Vaillancourt alone accounts for 28.74% of the shares held by Enpro insiders.
A total of 73 Form 4 filings with transactions in Enpro stock were made over the past 12 months, by 15 insiders.
This summary of Enpro insider activity covers Form 4 filings through October 1, 2026.

Form 4 Holdings

Insiders Holding NPO

Insiders 19

Shares held 186.44K

Of outstanding 0.881%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Eric A. Vaillancourt	President And Ceo	51,275	0	51,275	27.5%	17 Feb, 2026
2	John M Ii Childress	Evp Cfo	37,413	0	37,413	20.1%	28 Feb, 2024
3	Robert Savage Mclean	Evp, Gc, And Cao	29,909	0	29,909	16.0%	24 Feb, 2026
4	Thomas M. Botts	Director	9,707	0	9,707	5.2%	12 Feb, 2026
5	Larisa R. Joiner	Svp And Cio	9,431	0	9,431	5.1%	17 Feb, 2026
6	Susan E Sweeney	Svp And Chro	8,813	0	8,813	4.7%	19 Jan, 2022
7	B. Bernard Jr. Burns	Director	6,329	0	6,329	3.4%	17 Feb, 2023
8	Adele M. Gulfo	Director	4,860	0	4,860	2.6%	12 Feb, 2026
9	Steven R. Bower	Svp, Controller And Cao	4,695	0	4,695	2.5%	02 Mar, 2026
10	Judith A Reinsdorf	Director	4,038	0	4,038	2.2%	12 Feb, 2026
11	David L Hauser	Director	3,909	0	3,909	2.1%	12 Feb, 2026
12	Diane C Creel	Director	3,777	0	3,777	2.0%	17 Feb, 2023
13	William Abbey	Director	3,359	0	3,359	1.8%	12 Feb, 2026
14	John Humphrey	Director	0	3,200	3,200	1.7%	25 Feb, 2026
15	Felix M. Brueck	Director	1,567	0	1,567	0.8%	25 Feb, 2026
16	Allison Aden	Director	1,379	0	1,379	0.7%	12 Feb, 2026
17	Joseph F Jr. Bruderek	Evp And Cfo	1,296	0	1,296	0.7%	17 Feb, 2026
18	Ron Angelillo	Vp, Tax	1,144	0	1,144	0.6%	21 Feb, 2023
19	Amy Bianchi	Evp And Chro	335	0	335	0.2%	16 Sep, 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

2,781 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
30 Sep, 2026	Thomas M. Botts	Director	Acquired A	82	$306.26	$25.00K	18,153	Direct
30 Sep, 2026	Judith A Reinsdorf	Director	Acquired A	91	$306.26	$28.00K	1,276	Direct
30 Sep, 2026	William Abbey	Director	Acquired A	82	$306.26	$25.00K	1,681	Direct
16 Sep, 2026	Thomas M. Botts	Director	Acquired A	17	$287.16	$4.88K	18,068	Direct
16 Sep, 2026	William Abbey	Director	Acquired A	2	$287.16	$511	1,600	Direct
16 Sep, 2026	Felix M. Brueck	Director	Acquired A	13	$287.16	$3.73K	22,065	Direct
16 Sep, 2026	John Humphrey	Director	Acquired A	13	$287.16	$3.63K	17,882	Direct
16 Sep, 2026	Judith A Reinsdorf	Director	Acquired A	1	$287.16	$241	1,185	Direct
16 Sep, 2026	Adele M. Gulfo	Director	Acquired A	5	$287.16	$1.44K	5,282	Direct
16 Sep, 2026	Felix M. Brueck	Director	Acquired A	11	$287.16	$3.22K	22,076	Direct
16 Sep, 2026	Thomas M. Botts	Director	Acquired A	3	$287.16	$953	18,072	Direct
16 Sep, 2026	Adele M. Gulfo	Director	Acquired A	1	$287.16	$165	5,282	Direct
16 Sep, 2026	John Humphrey	Director	Acquired A	10	$287.16	$2.87K	17,892	Direct
15 Sep, 2026	Amy Bianchi	Evp And Chro	Acquired M	524	$0.00	$0	524	Direct
15 Sep, 2026	Amy Bianchi	Evp And Chro	Disposed F	189	$283.94	$53.66K	335	Direct
15 Sep, 2026	Amy Bianchi	Evp And Chro	Disposed M	524	$0.00	$0	1,051	Direct
30 Jun, 2026	Judith A Reinsdorf	Director	Acquired A	74	$376.93	$27.89K	1,184	Direct
30 Jun, 2026	Thomas M. Botts	Director	Acquired A	57	$376.93	$21.65K	18,051	Direct
30 Jun, 2026	William Abbey	Director	Acquired A	66	$376.93	$25.00K	1,598	Direct
17 Jun, 2026	Thomas M. Botts	Director	Acquired A	13	$363.62	$4.73K	17,991	Direct

Showing 1 to 20 of 2,781 transactions