NPO · Insider Trading

Enpro Inc.

Every open-market purchase and sale reported by NPO officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
0
code P
Sales
3
code S
Reporting Insiders
15
current holders
NPO — Recent Form 4 Transactions (latest 2026-10-01)
FiledInsiderRole TypeSharesValue
2026-10-01 William Abbey Director A +81 deriv. —
2026-10-01 Judith A Reinsdorf Director A +91 deriv. —
2026-10-01 Thomas M. Botts Director A +81 deriv. —
2026-09-17 Felix M. Brueck Director A +24 deriv. —
2026-09-17 John Humphrey Director A +22 deriv. —
2026-09-17 Thomas M. Botts Director A +20 deriv. —
2026-09-17 Judith A Reinsdorf Director A +0 deriv. —
2026-09-17 William Abbey Director A +1 deriv. —
2026-09-17 Adele M. Gulfo Director A +5 deriv. —
2026-09-16 Amy Bianchi EVP and CHRO MIXED +335 −$53.66K
2026-07-01 Thomas M. Botts Director A +57 deriv. —
2026-07-01 Judith A Reinsdorf Director A +74 deriv. —
2026-07-01 William Abbey Director A +66 deriv. —
2026-06-18 Judith A Reinsdorf Director A +0 deriv. —
2026-06-18 William Abbey Director A +1 deriv. —
2026-06-18 Thomas M. Botts Director A +15 deriv. —
2026-06-18 Adele M. Gulfo Director A +4 deriv. —
2026-06-18 John Humphrey Director A +19 deriv. —
2026-06-18 Felix M. Brueck Director A +19 deriv. —
2026-04-02 William Abbey Director A +99 deriv. —
2026-04-02 Judith A Reinsdorf Director A +111 deriv. —
2026-04-02 Thomas M. Botts Director A +57 deriv. —
2026-04-02 Ronald C Keating Director A +99 deriv. —
2026-03-19 Ronald C Keating Director A +2 deriv. —
2026-03-19 William Abbey Director A +1 deriv. —
2026-03-19 Judith A Reinsdorf Director A +0 deriv. —
2026-03-19 John Humphrey Director A +24 deriv. —
2026-03-19 Thomas M. Botts Director A +22 deriv. —
2026-03-19 Felix M. Brueck Director A +27 deriv. —
2026-03-19 Adele M. Gulfo Director A +5 deriv. —
2026-03-19 David L Hauser Director A +48 deriv. —
2026-03-02 Steven R. Bower SVP, Controller and CAO MIXED +1,044 −$51.02K
2026-02-25 John Humphrey Director Sell −1,300 −$349.30K
2026-02-25 Felix M. Brueck Director Sell −5,853 −$1.61M
2026-02-24 Steven R. Bower SVP, Controller and CAO A +766 deriv. —
2026-02-24 Larisa R. Joiner SVP and CIO A +988 deriv. —
2026-02-24 Eric A. Vaillancourt President and CEO A +13,351 deriv. —
2026-02-24 Joseph F Bruderek Jr. EVP and CFO A +3,147 deriv. —
2026-02-24 Amy Bianchi EVP and CHRO A +1,488 deriv. —
2026-02-24 Robert Savage McLean EVP, GC, and CAO Sell −2,000 −$555.00K
2026-02-17 Joseph F Bruderek Jr. EVP and CFO MIXED +440 −$47.98K
2026-02-17 Steven R. Bower SVP, Controller and CAO MIXED +1,010 −$115.05K
2026-02-17 Larisa R. Joiner SVP and CIO MIXED +766 −$161.67K
2026-02-17 Eric A. Vaillancourt President and CEO MIXED +11,840 −$2.40M
2026-02-17 Robert Savage McLean EVP, GC, and CAO MIXED +2,452 −$412.22K
2026-02-13 Amy Bianchi EVP and CHRO A +859 deriv. —
2026-02-13 Eric A. Vaillancourt President and CEO MIXED +1,830 −$346.34K
2026-02-13 Larisa R. Joiner SVP and CIO MIXED +114 −$28.48K
2026-02-13 Robert Savage McLean EVP, GC, and CAO MIXED +341 −$52.34K
2026-02-13 Joseph F Bruderek Jr. EVP and CFO MIXED +445 −$57.23K
NPO — Current Insider Holders
InsiderRole Shares HeldValue
Eric A. Vaillancourt President and CEO 57,741 $15.43M
John M Childress II EVP & CFO 39,896 $10.66M
Robert Savage McLean EVP, GC, and CAO 30,306 $8.10M
Steven R. Bower SVP, Controller and CAO 11,123 $2.97M
Thomas M. Botts Director 9,707 $2.59M
Larisa R. Joiner SVP and CIO 9,648 $2.58M
John Humphrey Director 7,629 $2.04M
Adele M. Gulfo Director 4,860 $1.30M
Judith A Reinsdorf Director 4,038 $1.08M
David L Hauser Director 3,909 $1.04M
William Abbey Director 3,359 $897.56K
Felix M. Brueck Director 1,567 $418.72K
Allison Aden Director 1,379 $368.48K
Joseph F Bruderek Jr. EVP and CFO 1,296 $346.30K
Amy Bianchi EVP and CHRO 335 $89.52K
NPO Insider Trading FAQ
Who are the insiders at NPO?
15 officers, directors and 10%+ beneficial owners currently report holdings in NPO via SEC Form 4.
Are NPO insiders buying or selling?
Across the 50 most recent Form 4 filings for NPO, 0 were open-market purchases (code P) and 3 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is NPO insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent NPO filing is dated 2026-10-01.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the NPO quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.