Donald R. Maier
CIK 1537460 · President and CEO · last filed 2025-11-04
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$12.54M
Companies
4
Total Filings
31
Lifetime Open-Market Net
-$5.83M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| NXw | Director | — | — | — | $0 | 8 | 2025-11-04 |
| AWI | President and CEO | 81,306 | $154.21 | $12.54M | $0 | 7 | 2019-04-01 |
| Armstrong Flooring, Inc. (AFI) Delisted | President and CEO | 10,563 | $0.35 | $3.7K | $0 | 1 | 2016-04-13 |
| ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | EVP and CEO, AFP | 21,125 | — | — | -$5.83M | 15 | 2016-02-25 |
Recent Filings · Page 3 of 4
31 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2014-09-30 | ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | Grant (A) | +1,557 | $0 | EDGAR |
| 2014-02-27 | ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | Grant (A) | — | $0 | EDGAR |
| 2014-02-24 | ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | Mixed | +1,919 | -$82.1K | EDGAR |
| 2014-01-06 | ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | Mixed | — | -$2.94M | EDGAR |
| 2013-03-04 | ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | Tax (F) | −727 | -$37.4K | EDGAR |
| 2013-02-22 | ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | Grant (A) | — | $0 | EDGAR |
| 2013-01-03 | ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | Tax (F) | −1,025 | -$52.0K | EDGAR |
| 2012-04-12 | ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | Mixed | — | $0 | EDGAR |
| 2012-04-02 | ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | Tax (F) | −1,025 | -$50.0K | EDGAR |
| 2012-03-05 | ARMSTRONG WORLD INDUSTRIES INC (AWIw) Delisted | Tax (F) | −721 | -$37.1K | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.