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Who

Donald R. Maier

Director

Company insider

Files Form 4 as: Director, Quanex Building Products; President and CEO, Armstrong Flooring; EVP and CEO, AFP, Armstrong World Industries.

In numbers

Trades disclosed
86
Buys
0
Sells
1
Bought
$0
Sold
$5.8M
Companies
3
Companies where not an officer
1
First trade
28 Feb 2012
Last trade
1 Nov 2026
Last filed
3 Nov 2026

Companies traded

Where they are an officer
Armstrong FlooringDirector, Officer · last 29 Mar 20190 buys · 0 sells
AWI Armstrong World IndustriesOfficer · Building Products & Timber · last 24 Feb 20160 buys · 1 sell
Everywhere else they filed: board seats, 10% stakes, other companies
NX Quanex Building ProductsDirector · Steel & Metals Processing · last 1 Nov 20260 buys · 0 sells

Activity over time

1 Dec 2024 – 1 Nov 2026
101Dec 24Jun 25Dec 25May 26Nov 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
1 Nov 2026filed 3 Nov 2026NX Quanex Building Productsoption or derivative · Steel & Metals ProcessingSEC FORM 4 Code A—6,000 at $0.00filing
4 Nov 2025filed 4 Nov 2025NX Quanex Building Productsoption or derivative · Steel & Metals ProcessingSEC FORM 4 Code A—8,045 at $0.00filing
1 Nov 2024filed 4 Nov 2024NX Quanex Building Productsoption or derivative · Steel & Metals ProcessingSEC FORM 4 Code A—3,530 at $0.00filing
1 Nov 2023filed 2 Nov 2023NX Quanex Building Productsoption or derivative · Steel & Metals ProcessingSEC FORM 4 Code A—3,745 at $0.00filing
1 Nov 2022filed 3 Nov 2022NX Quanex Building Productsoption or derivative · Steel & Metals ProcessingSEC FORM 4 Code A—4,838 at $0.00filing
1 Nov 2021filed 2 Nov 2021NX Quanex Building Productsoption or derivative · Steel & Metals ProcessingSEC FORM 4 Code A—4,797 at $0.00filing
2 Nov 2020filed 3 Nov 2020NX Quanex Building Productsoption or derivative · Steel & Metals ProcessingSEC FORM 4 Code A—4,188 at $0.00filing
1 Nov 2019filed 4 Nov 2019NX Quanex Building Productsoption or derivative · Steel & Metals ProcessingSEC FORM 4 Code A—4,221 at $0.00filing
29 Mar 2019filed 1 Apr 2019Armstrong FlooringSEC FORM 4 Code A—54,385 at $0.00filing
29 Mar 2019filed 1 Apr 2019Armstrong FlooringSEC FORM 4 Code F$257K18,768 at $13.70filing
22 Mar 2019filed 25 Mar 2019NX Quanex Building Productsoption or derivative · Steel & Metals ProcessingSEC FORM 4 Code A—3,145 at $0.00filing
7 Mar 2019filed 11 Mar 2019Armstrong Flooringoption or derivativeSEC FORM 4 Code A—31,274 at $0.00filing
23 Feb 2018filed 27 Feb 2018Armstrong FlooringSEC FORM 4 Code M$275K18,970 at $14.52filing
23 Feb 2018filed 27 Feb 2018Armstrong FlooringSEC FORM 4 Code F$79K5,447 at $14.52filing
23 Feb 2018filed 27 Feb 2018Armstrong Flooringoption or derivativeSEC FORM 4 Code M—18,970 at $0.00filing
5 Jan 2018filed 9 Jan 2018Armstrong Flooringoption or derivativeSEC FORM 4 Code A—76,561 at $0.00filing
26 Sep 2017filed 28 Sep 2017Armstrong FlooringSEC FORM 4 Code M$87K5,765 at $15.09filing
26 Sep 2017filed 28 Sep 2017Armstrong FlooringSEC FORM 4 Code F$41K2,686 at $15.09filing
26 Sep 2017filed 28 Sep 2017Armstrong Flooringoption or derivativeSEC FORM 4 Code M—5,765 at $0.00filing
24 Feb 2017filed 28 Feb 2017Armstrong FlooringSEC FORM 4 Code M$418K18,965 at $22.04filing

Sectors

Materials1

Buys in green, sells in red, by the company’s sector.

Related people

Jennifer Ott KozakSVP, Chro · SVP, Chro at Armstrong World Industries, filing Form 4 there in the last year
Richard D. HolderDirector · Director at Armstrong World Industries, filing Form 4 there in the last year
William H. OsborneDirector · Director at Armstrong World Industries, filing Form 4 there in the last year
Wayne ShurtsDirector · Director at Armstrong World Industries, filing Form 4 there in the last year
Roy W. TemplinDirector · Director at Armstrong World Industries, filing Form 4 there in the last year