MAS's three largest insider shareholders as of September 09, 2026 are John G Sznewajs (Vp And Cfo, 187.78K shares), Richard A. O'Reagan (Group President, 74.89K shares), Richard A. O'Reagan (Group President, 74.89K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | John G Sznewajs | Vp And Cfo | 187,784 | 0 | 187,784 | 22.0% | 12 May, 2023 |
| 2 | Richard A. O'Reagan | Group President | 74,894 | 0 | 74,894 | 8.8% | 01 Mar, 2022 |
| 3 | Keith J. Allman | President And Ceo | 60,267 | 0 | 60,267 | 7.1% | 27 Feb, 2025 |
| 4 | Christopher A O'Herlihy | Director | 51,766 | 0 | 51,766 | 6.1% | 12 May, 2026 |
| 5 | John C Plant | Director | 50,574 | 0 | 50,574 | 5.9% | 12 May, 2026 |
| 6 | Jai Shah | Group President | 45,966 | 0 | 45,966 | 5.4% | 10 Mar, 2026 |
| 7 | Jonathon Nudi | President And Ceo | 42,809 | 0 | 42,809 | 5.0% | 27 Feb, 2026 |
| 8 | Richard J. Westenberg | Vp, Cfo Treasurer | 40,576 | 0 | 40,576 | 4.8% | 27 Feb, 2026 |
| 9 | Kenneth G. Cole | Vp, General Counsel And Sec. | 39,700 | 0 | 39,700 | 4.7% | 27 Feb, 2026 |
| 10 | Renee Straber | Vp Chief Hr Officer | 33,027 | 0 | 33,027 | 3.9% | 13 Mar, 2025 |
| 11 | John P Lindow | Vp, Controller And Cao | 28,415 | 0 | 28,415 | 3.3% | 10 Feb, 2022 |
| 12 | Jennifer A Stone | Vp, Chief Hr Officer | 25,433 | 0 | 25,433 | 3.0% | 27 Feb, 2026 |
| 13 | Marie A Ffolkes | Director | 24,517 | 0 | 24,517 | 2.9% | 12 May, 2026 |
| 14 | Mark R. Alexander | Director | 23,469 | 0 | 23,469 | 2.8% | 12 May, 2026 |
| 15 | Reginald M Jr Turner | Director | 18,866 | 0 | 18,866 | 2.2% | 12 Dec, 2022 |
| 16 | Charles K. Iii Stevens | Director | 18,090 | 0 | 18,090 | 2.1% | 12 May, 2026 |
| 17 | Richard Allan Marshall | Vp Masco Operating Sys. | 17,496 | 0 | 17,496 | 2.1% | 27 Feb, 2026 |
| 18 | Etten Bonnie S Van | Vp, Controller And Cao | 13,620 | 0 | 13,620 | 1.6% | 19 Jul, 2024 |
| 19 | Heath M Eisman | Vp, Controller And Cao | 12,510 | 0 | 12,510 | 1.5% | 27 Feb, 2026 |
| 20 | Aine Denari | Director | 11,320 | 0 | 11,320 | 1.3% | 13 May, 2025 |
| 21 | Imran Ahmad | Group President | 10,961 | 0 | 10,961 | 1.3% | 27 Feb, 2025 |
| 22 | Reddy Sandeep | Director | 10,460 | 0 | 10,460 | 1.2% | 12 May, 2026 |
| 23 | Robin L Zondervan | Vp, Controller And Cao | 6,203 | 0 | 6,203 | 0.7% | 27 Feb, 2024 |
| 24 | Gary A Coombe | Director | 3,630 | 0 | 3,630 | 0.4% | 12 May, 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.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 08 May, 2026 | Mark R. Alexander | Director | Acquired A | 2,650 | $0.00 | $0 | 23,469 | Direct |
| 08 May, 2026 | Marie A Ffolkes | Director | Acquired A | 2,650 | $0.00 | $0 | 24,517 | Direct |
| 08 May, 2026 | Gary A Coombe | Director | Acquired A | 2,650 | $0.00 | $0 | 3,630 | Direct |
| 08 May, 2026 | Charles K. Iii Stevens | Director | Acquired A | 2,650 | $0.00 | $0 | 18,090 | Direct |
| 08 May, 2026 | John C Plant | Director | Acquired A | 2,650 | $0.00 | $0 | 50,574 | Direct |
| 08 May, 2026 | Reddy Sandeep | Director | Acquired A | 2,650 | $0.00 | $0 | 10,460 | Direct |
| 08 May, 2026 | Christopher A O'Herlihy | Director | Acquired A | 2,650 | $0.00 | $0 | 51,766 | Direct |
| 06 Mar, 2026 | Jai Shah | Group President | Disposed F | 4,410 | $63.66 | $280.74K | 45,966 | Direct |
| 06 Mar, 2026 | Jai Shah | Group President | Disposed F | 4,410 | $63.66 | $280.74K | 45,966 | Direct |
| 06 Mar, 2026 | Jai Shah | Group President | Disposed F | 4,410 | $63.66 | $280.74K | 45,966 | Direct |
| 06 Mar, 2026 | Jai Shah | Group President | Disposed F | 4,410 | $63.66 | $280.74K | 45,966 | Direct |
| 25 Feb, 2026 | Richard Allan Marshall | Vp Masco Operating Sys. | Disposed F | 515 | $71.86 | $37.01K | 17,496 | Direct |
| 25 Feb, 2026 | Jai Shah | Group President | Disposed F | 1,954 | $71.86 | $140.41K | 50,376 | Direct |
| 25 Feb, 2026 | Jonathon Nudi | President And Ceo | Disposed F | 2,501 | $71.86 | $179.72K | 42,809 | Direct |
| 25 Feb, 2026 | Jai Shah | Group President | Disposed F | 1,954 | $71.86 | $140.41K | 50,376 | Direct |
| 25 Feb, 2026 | Jennifer A Stone | Vp, Chief Hr Officer | Disposed F | 4,767 | $71.86 | $342.56K | 25,433 | Direct |
| 25 Feb, 2026 | Richard J. Westenberg | Vp, Cfo Treasurer | Disposed F | 6,565 | $71.86 | $471.76K | 40,576 | Direct |
| 25 Feb, 2026 | Jennifer A Stone | Vp, Chief Hr Officer | Disposed F | 4,767 | $71.86 | $342.56K | 25,433 | Direct |
| 25 Feb, 2026 | Richard J. Westenberg | Vp, Cfo Treasurer | Disposed F | 6,565 | $71.86 | $471.76K | 40,576 | Direct |
| 25 Feb, 2026 | Richard J. Westenberg | Vp, Cfo Treasurer | Disposed F | 6,565 | $71.86 | $471.76K | 40,576 | Direct |